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gecko-dev/editor/libeditor/html/nsHTMLEditRules.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsHTMLEditRules.h"
#include "nsEditor.h"
#include "nsHTMLEditUtils.h"
#include "nsHTMLEditor.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsIDOMNode.h"
#include "nsIDOMText.h"
#include "nsIDOMElement.h"
#include "nsIDOMNodeList.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsIDOMRange.h"
#include "nsIDOMNSRange.h"
#include "nsIDOMCharacterData.h"
#include "nsIEnumerator.h"
#include "nsIStyleContext.h"
#include "nsIPresShell.h"
#include "nsLayoutCID.h"
#include "nsIPref.h"
#include "nsEditorUtils.h"
#include "InsertTextTxn.h"
#include "DeleteTextTxn.h"
//const static char* kMOZEditorBogusNodeAttr="MOZ_EDITOR_BOGUS_NODE";
//const static char* kMOZEditorBogusNodeValue="TRUE";
const static PRUnichar nbsp = 160;
static NS_DEFINE_IID(kContentIteratorCID, NS_CONTENTITERATOR_CID);
static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
static NS_DEFINE_CID(kPrefServiceCID, NS_PREF_CID);
enum
{
kLonely = 0,
kPrevSib = 1,
kNextSib = 2,
kBothSibs = 3
};
/********************************************************
* first some helpful funcotrs we will use
********************************************************/
class nsTableCellAndListItemFunctor : public nsBoolDomIterFunctor
{
public:
virtual PRBool operator()(nsIDOMNode* aNode) // used to build list of all li's, td's & th's iterator covers
{
if (nsHTMLEditUtils::IsTableCell(aNode)) return PR_TRUE;
if (nsHTMLEditUtils::IsListItem(aNode)) return PR_TRUE;
return PR_FALSE;
}
};
class nsBRNodeFunctor : public nsBoolDomIterFunctor
{
public:
virtual PRBool operator()(nsIDOMNode* aNode) // used to build list of all td's & th's iterator covers
{
if (nsHTMLEditUtils::IsBreak(aNode)) return PR_TRUE;
return PR_FALSE;
}
};
class nsEmptyFunctor : public nsBoolDomIterFunctor
{
public:
nsEmptyFunctor(nsHTMLEditor* editor) : mEditor(editor) {}
virtual PRBool operator()(nsIDOMNode* aNode) // used to build list of empty li's and td's
{
PRBool bIsEmptyNode;
nsresult res = mEditor->IsEmptyNode(aNode, &bIsEmptyNode, PR_FALSE, PR_FALSE);
if (NS_FAILED(res)) return PR_FALSE;
if (bIsEmptyNode
&& (nsHTMLEditUtils::IsListItem(aNode) || nsHTMLEditUtils::IsTableCellOrCaption(aNode)))
{
return PR_TRUE;
}
return PR_FALSE;
}
protected:
nsHTMLEditor* mEditor;
};
class nsEditableTextFunctor : public nsBoolDomIterFunctor
{
public:
nsEditableTextFunctor(nsHTMLEditor* editor) : mEditor(editor) {}
virtual PRBool operator()(nsIDOMNode* aNode) // used to build list of empty li's and td's
{
if (nsEditor::IsTextNode(aNode) && mEditor->IsEditable(aNode))
{
return PR_TRUE;
}
return PR_FALSE;
}
protected:
nsHTMLEditor* mEditor;
};
/********************************************************
* routine for making new rules instance
********************************************************/
nsresult
NS_NewHTMLEditRules(nsIEditRules** aInstancePtrResult)
{
nsHTMLEditRules * rules = new nsHTMLEditRules();
if (rules)
return rules->QueryInterface(NS_GET_IID(nsIEditRules), (void**) aInstancePtrResult);
return NS_ERROR_OUT_OF_MEMORY;
}
/********************************************************
* Constructor/Destructor
********************************************************/
nsHTMLEditRules::nsHTMLEditRules() :
mDocChangeRange(nsnull)
,mListenerEnabled(PR_TRUE)
,mReturnInEmptyLIKillsList(PR_TRUE)
,mUtilRange(nsnull)
,mJoinOffset(0)
{
}
nsHTMLEditRules::~nsHTMLEditRules()
{
// remove ourselves as a listener to edit actions
// In the normal case, we have already been removed by
// ~nsHTMLEditor, in which case we will get an error here
// which we ignore. But this allows us to add the ability to
// switch rule sets on the fly if we want.
mEditor->RemoveEditActionListener(this);
}
/********************************************************
* XPCOM Cruft
********************************************************/
NS_IMPL_ADDREF_INHERITED(nsHTMLEditRules, nsTextEditRules)
NS_IMPL_RELEASE_INHERITED(nsHTMLEditRules, nsTextEditRules)
NS_IMPL_QUERY_INTERFACE3(nsHTMLEditRules, nsIHTMLEditRules, nsIEditRules, nsIEditActionListener)
/********************************************************
* Public methods
********************************************************/
NS_IMETHODIMP
nsHTMLEditRules::Init(nsHTMLEditor *aEditor, PRUint32 aFlags)
{
// call through to base class Init first
nsresult res = nsTextEditRules::Init(aEditor, aFlags);
if (NS_FAILED(res)) return res;
// cache any prefs we care about
NS_WITH_SERVICE(nsIPref, prefs, kPrefServiceCID, &res);
if (NS_FAILED(res)) return res;
char *returnInEmptyLIKillsList = 0;
res = prefs->CopyCharPref("editor.html.typing.returnInEmptyListItemClosesList",
&returnInEmptyLIKillsList);
if (NS_SUCCEEDED(res) && returnInEmptyLIKillsList)
{
if (!strncmp(returnInEmptyLIKillsList, "false", 5))
mReturnInEmptyLIKillsList = PR_FALSE;
else
mReturnInEmptyLIKillsList = PR_TRUE;
}
else
{
mReturnInEmptyLIKillsList = PR_TRUE;
}
// make a utility range for use by the listenter
mUtilRange = do_CreateInstance(kRangeCID);
if (!mUtilRange) return NS_ERROR_NULL_POINTER;
// pass over document and add any needed mozBRs
// first turn off undo
mEditor->EnableUndo(PR_FALSE);
// set up mDocChangeRange to be whole doc
nsCOMPtr<nsIDOMElement> bodyElem;
nsCOMPtr<nsIDOMNode> bodyNode;
mEditor->GetRootElement(getter_AddRefs(bodyElem));
bodyNode = do_QueryInterface(bodyElem);
if (bodyNode)
{
// temporarily turn off rules sniffing
nsAutoLockRulesSniffing lockIt((nsTextEditRules*)this);
if (!mDocChangeRange)
{
mDocChangeRange = do_CreateInstance(kRangeCID);
if (!mDocChangeRange) return NS_ERROR_NULL_POINTER;
}
mDocChangeRange->SelectNode(bodyNode);
res = ReplaceNewlines(mDocChangeRange);
if (NS_FAILED(res)) return res;
res = AdjustSpecialBreaks();
if (NS_FAILED(res)) return res;
}
// turn on undo
mEditor->EnableUndo(PR_TRUE);
// add ourselves as a listener to edit actions
res = mEditor->AddEditActionListener(this);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::BeforeEdit(PRInt32 action, nsIEditor::EDirection aDirection)
{
if (mLockRulesSniffing) return NS_OK;
nsAutoLockRulesSniffing lockIt((nsTextEditRules*)this);
if (!mActionNesting)
{
nsresult rv;
nsCOMPtr<nsIDOMNSRange> nsrange;
if(mDocChangeRange)
{
nsrange = do_QueryInterface(mDocChangeRange);
if (NS_FAILED(rv) || !nsrange)
return NS_ERROR_FAILURE;
nsrange->NSDetach(); // clear out our accounting of what changed
}
if(mUtilRange)
{
nsrange = do_QueryInterface(mUtilRange);
if (NS_FAILED(rv) || !nsrange)
return NS_ERROR_FAILURE;
nsrange->NSDetach(); // ditto for mUtilRange.
}
// turn off caret
nsCOMPtr<nsISelectionController> selCon;
mEditor->GetSelectionController(getter_AddRefs(selCon));
if (selCon) selCon->SetCaretEnabled(PR_FALSE);
// check that selection is in subtree defined by body node
ConfirmSelectionInBody();
// let rules remember the top level action
mTheAction = action;
}
mActionNesting++;
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::AfterEdit(PRInt32 action, nsIEditor::EDirection aDirection)
{
if (mLockRulesSniffing) return NS_OK;
nsAutoLockRulesSniffing lockIt(this);
NS_PRECONDITION(mActionNesting>0, "bad action nesting!");
nsresult res = NS_OK;
if (!--mActionNesting)
{
// do all the tricky stuff
res = AfterEditInner(action, aDirection);
// turn on caret
nsCOMPtr<nsISelectionController> selCon;
mEditor->GetSelectionController(getter_AddRefs(selCon));
if (selCon) selCon->SetCaretEnabled(PR_TRUE);
}
return res;
}
nsresult
nsHTMLEditRules::AfterEditInner(PRInt32 action, nsIEditor::EDirection aDirection)
{
ConfirmSelectionInBody();
if (action == nsEditor::kOpIgnore) return NS_OK;
nsCOMPtr<nsISelection>selection;
nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
// do we have a real range to act on?
PRBool bDamagedRange = PR_FALSE;
if (mDocChangeRange)
{
nsCOMPtr<nsIDOMNode> rangeStartParent, rangeEndParent;
mDocChangeRange->GetStartContainer(getter_AddRefs(rangeStartParent));
mDocChangeRange->GetEndContainer(getter_AddRefs(rangeEndParent));
if (rangeStartParent && rangeEndParent)
bDamagedRange = PR_TRUE;
}
if (bDamagedRange && !((action == nsEditor::kOpUndo) || (action == nsEditor::kOpRedo)))
{
// dont let any txns in here move the selection around behind our back.
// Note that this won't prevent explicit selection setting from working.
nsAutoTxnsConserveSelection dontSpazMySelection(mEditor);
// expand the "changed doc range" as needed
res = PromoteRange(mDocChangeRange, action);
if (NS_FAILED(res)) return res;
// add in any needed <br>s, and remove any unneeded ones.
res = AdjustSpecialBreaks();
if (NS_FAILED(res)) return res;
// merge any adjacent text nodes
if ( (action != nsEditor::kOpInsertText &&
action != nsEditor::kOpInsertIMEText) )
{
res = mEditor->CollapseAdjacentTextNodes(mDocChangeRange);
if (NS_FAILED(res)) return res;
}
// adjust whitespace for insert text and delete actions
if ((action == nsEditor::kOpInsertText) ||
(action == nsEditor::kOpInsertIMEText) ||
(action == nsEditor::kOpDeleteSelection))
{
res = AdjustWhitespace(selection);
if (NS_FAILED(res)) return res;
}
// replace newlines that are preformatted
// MOOSE: This is buttUgly. A better way to
// organize the action enum is in order.
if ((action == nsEditor::kOpInsertText) ||
(action == nsEditor::kOpInsertIMEText) ||
(action == nsHTMLEditor::kOpInsertElement) ||
(action == nsHTMLEditor::kOpInsertQuotation) ||
(action == nsEditor::kOpInsertNode))
{
res = ReplaceNewlines(mDocChangeRange);
}
// clean up any empty nodes in the selection
res = RemoveEmptyNodes();
if (NS_FAILED(res)) return res;
// adjust selection for insert text, html paste, and delete actions
if ((action == nsEditor::kOpInsertText) ||
(action == nsEditor::kOpInsertIMEText) ||
(action == nsEditor::kOpDeleteSelection) ||
(action == nsEditor::kOpHTMLPaste))
{
res = AdjustSelection(selection, aDirection);
if (NS_FAILED(res)) return res;
}
}
// detect empty doc
res = CreateBogusNodeIfNeeded(selection);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDoAction(nsISelection *aSelection,
nsRulesInfo *aInfo,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aInfo || !aCancel || !aHandled)
return NS_ERROR_NULL_POINTER;
#if defined(DEBUG_ftang)
printf("nsHTMLEditRules::WillDoAction action = %d\n", aInfo->action);
#endif
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
// my kingdom for dynamic cast
nsTextRulesInfo *info = NS_STATIC_CAST(nsTextRulesInfo*, aInfo);
switch (info->action)
{
case kInsertText:
case kInsertTextIME:
return WillInsertText(info->action,
aSelection,
aCancel,
aHandled,
info->inString,
info->outString,
info->maxLength);
case kInsertBreak:
return WillInsertBreak(aSelection, aCancel, aHandled);
case kDeleteSelection:
return WillDeleteSelection(aSelection, info->collapsedAction, aCancel, aHandled);
case kMakeList:
return WillMakeList(aSelection, info->blockType, info->entireList, aCancel, aHandled);
case kIndent:
return WillIndent(aSelection, aCancel, aHandled);
case kOutdent:
return WillOutdent(aSelection, aCancel, aHandled);
case kAlign:
return WillAlign(aSelection, info->alignType, aCancel, aHandled);
case kMakeBasicBlock:
return WillMakeBasicBlock(aSelection, info->blockType, aCancel, aHandled);
case kRemoveList:
return WillRemoveList(aSelection, info->bOrdered, aCancel, aHandled);
case kMakeDefListItem:
return WillMakeDefListItem(aSelection, info->blockType, info->entireList, aCancel, aHandled);
case kInsertElement:
return WillInsert(aSelection, aCancel);
}
return nsTextEditRules::WillDoAction(aSelection, aInfo, aCancel, aHandled);
}
NS_IMETHODIMP
nsHTMLEditRules::DidDoAction(nsISelection *aSelection,
nsRulesInfo *aInfo, nsresult aResult)
{
nsTextRulesInfo *info = NS_STATIC_CAST(nsTextRulesInfo*, aInfo);
switch (info->action)
{
case kMakeBasicBlock:
case kIndent:
case kOutdent:
case kAlign:
return DidMakeBasicBlock(aSelection, aInfo, aResult);
}
// default: pass thru to nsTextEditRules
return nsTextEditRules::DidDoAction(aSelection, aInfo, aResult);
}
/********************************************************
* nsIHTMLEditRules methods
********************************************************/
NS_IMETHODIMP
nsHTMLEditRules::GetListState(PRBool &aMixed, PRBool &aOL, PRBool &aUL, PRBool &aDL)
{
aMixed = PR_FALSE;
aOL = PR_FALSE;
aUL = PR_FALSE;
aDL = PR_FALSE;
PRBool bNonList = PR_FALSE;
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsresult res = GetListActionNodes(address_of(arrayOfNodes), PR_FALSE, PR_TRUE);
if (NS_FAILED(res)) return res;
// examine list type for nodes in selection
PRUint32 listCount;
PRInt32 i;
arrayOfNodes->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports) );
if (mEditor->NodeIsType(curNode,nsIEditProperty::ul))
aUL = PR_TRUE;
else if (mEditor->NodeIsType(curNode,nsIEditProperty::ol))
aOL = PR_TRUE;
else if (mEditor->NodeIsType(curNode,nsIEditProperty::li))
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
if (nsHTMLEditUtils::IsUnorderedList(parent))
aUL = PR_TRUE;
else if (nsHTMLEditUtils::IsOrderedList(parent))
aOL = PR_TRUE;
}
else if (mEditor->NodeIsType(curNode,nsIEditProperty::dl) ||
mEditor->NodeIsType(curNode,nsIEditProperty::dt) ||
mEditor->NodeIsType(curNode,nsIEditProperty::dd) )
{
aDL = PR_TRUE;
}
else bNonList = PR_TRUE;
}
// hokey arithmetic with booleans
if ( (aUL + aOL + aDL + bNonList) > 1) aMixed = PR_TRUE;
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::GetListItemState(PRBool &aMixed, PRBool &aLI, PRBool &aDT, PRBool &aDD)
{
aMixed = PR_FALSE;
aLI = PR_FALSE;
aDT = PR_FALSE;
aDD = PR_FALSE;
PRBool bNonList = PR_FALSE;
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsresult res = GetListActionNodes(address_of(arrayOfNodes), PR_FALSE, PR_TRUE);
if (NS_FAILED(res)) return res;
// examine list type for nodes in selection
PRUint32 listCount;
PRInt32 i;
arrayOfNodes->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports) );
if (mEditor->NodeIsType(curNode,nsIEditProperty::ul) ||
mEditor->NodeIsType(curNode,nsIEditProperty::ol) ||
mEditor->NodeIsType(curNode,nsIEditProperty::li) )
{
aLI = PR_TRUE;
}
else if (mEditor->NodeIsType(curNode,nsIEditProperty::dt))
{
aDT = PR_TRUE;
}
else if (mEditor->NodeIsType(curNode,nsIEditProperty::dd))
{
aDD = PR_TRUE;
}
else if (mEditor->NodeIsType(curNode,nsIEditProperty::dl))
{
// need to look inside dl and see which types of items it has
PRBool bDT, bDD;
res = GetDefinitionListItemTypes(curNode, bDT, bDD);
if (NS_FAILED(res)) return res;
aDT |= bDT;
aDD |= bDD;
}
else bNonList = PR_TRUE;
}
// hokey arithmetic with booleans
if ( (aDT + aDD + bNonList) > 1) aMixed = PR_TRUE;
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::GetAlignment(PRBool &aMixed, nsIHTMLEditor::EAlignment &aAlign)
{
// for now, just return first alignment. we'll lie about
// if it's mixed. This is for efficiency
// given that our current ui doesn't care if it's mixed.
// cmanske: NOT TRUE! We would like to pay attention to mixed state
// in Format | Align submenu!
// this routine assumes that alignment is done ONLY via divs
// default alignment is left
aMixed = PR_FALSE;
aAlign = nsIHTMLEditor::eLeft;
// get selection
nsCOMPtr<nsISelection>selection;
nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
// get selection location
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
res = mEditor->GetStartNodeAndOffset(selection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
// is the selection collapsed?
PRBool bCollapsed;
res = selection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> nodeToExamine;
if (bCollapsed)
{
// if it is, we want to look at 'parent' and it's ancestors
// for divs with alignment on them
nodeToExamine = parent;
}
else if (mEditor->IsTextNode(parent))
{
// if we are in a text node, then that is the node of interest
nodeToExamine = parent;
}
else
{
// otherwise we want to look at the first editable node after
// {parent,offset} and it's ancestors for divs with alignment on them
mEditor->GetNextNode(parent, offset, PR_TRUE, getter_AddRefs(nodeToExamine));
}
if (!nodeToExamine) return NS_ERROR_NULL_POINTER;
// check up the ladder for divs with alignment
nsCOMPtr<nsIDOMNode> temp = nodeToExamine;
while (nodeToExamine)
{
if (nsHTMLEditUtils::IsDiv(nodeToExamine))
{
// check for alignment
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(nodeToExamine);
if (elem)
{
nsAutoString typeAttrName; typeAttrName.AssignWithConversion("align");
nsAutoString typeAttrVal;
res = elem->GetAttribute(typeAttrName, typeAttrVal);
typeAttrVal.ToLowerCase();
if (NS_SUCCEEDED(res) && typeAttrVal.Length())
{
if (typeAttrVal.EqualsWithConversion("center"))
aAlign = nsIHTMLEditor::eCenter;
else if (typeAttrVal.EqualsWithConversion("right"))
aAlign = nsIHTMLEditor::eRight;
else if (typeAttrVal.EqualsWithConversion("justify"))
aAlign = nsIHTMLEditor::eJustify;
else
aAlign = nsIHTMLEditor::eLeft;
return res;
}
}
}
res = nodeToExamine->GetParentNode(getter_AddRefs(temp));
if (NS_FAILED(res)) temp = nsnull;
nodeToExamine = temp;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::GetIndentState(PRBool &aCanIndent, PRBool &aCanOutdent)
{
aCanIndent = PR_TRUE;
aCanOutdent = PR_FALSE;
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsresult res = GetListActionNodes(address_of(arrayOfNodes), PR_FALSE, PR_TRUE);
if (NS_FAILED(res)) return res;
// examine nodes in selection for blockquotes or list elements;
// these we can outdent. Note that we return true for canOutdent
// if *any* of the selection is outdentable, rather than all of it.
PRUint32 listCount;
PRInt32 i;
arrayOfNodes->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports) );
if (nsHTMLEditUtils::IsList(curNode) ||
nsHTMLEditUtils::IsListItem(curNode) ||
nsHTMLEditUtils::IsBlockquote(curNode))
{
aCanOutdent = PR_TRUE;
break;
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::GetParagraphState(PRBool &aMixed, nsString &outFormat)
{
// This routine is *heavily* tied to our ui choices in the paragraph
// style popup. I cant see a way around that.
aMixed = PR_TRUE;
outFormat.AssignWithConversion("");
PRBool bMixed = PR_FALSE;
nsAutoString formatStr;
// using "x" as an uninitialized value, since "" is meaningful
formatStr.AssignWithConversion("x");
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsresult res = GetParagraphFormatNodes(address_of(arrayOfNodes), PR_TRUE);
if (NS_FAILED(res)) return res;
// we might have an empty node list. if so, find selection parent
// and put that on the list
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
nsCOMPtr<nsISupports> isupports;
if (!listCount)
{
nsCOMPtr<nsIDOMNode> selNode;
PRInt32 selOffset;
nsCOMPtr<nsISelection>selection;
res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
res = mEditor->GetStartNodeAndOffset(selection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
isupports = do_QueryInterface(selNode);
if (!isupports) return NS_ERROR_NULL_POINTER;
arrayOfNodes->AppendElement(isupports);
listCount = 1;
}
// loop through the nodes in selection and examine their paragraph format
PRInt32 i;
for (i=(PRInt32)listCount-1; i>=0; i--)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports) );
nsAutoString format;
nsCOMPtr<nsIAtom> atom = mEditor->GetTag(curNode);
if (mEditor->IsInlineNode(curNode))
{
nsCOMPtr<nsIDOMNode> block = mEditor->GetBlockNodeParent(curNode);
if (block)
{
nsCOMPtr<nsIAtom> blockAtom = mEditor->GetTag(block);
if ( nsIEditProperty::p == blockAtom.get() ||
nsIEditProperty::blockquote == blockAtom.get() ||
nsIEditProperty::address == blockAtom.get() ||
nsIEditProperty::pre == blockAtom.get() )
{
blockAtom->ToString(format);
}
else if (nsHTMLEditUtils::IsHeader(block))
{
nsAutoString tag;
nsEditor::GetTagString(block,tag);
tag.ToLowerCase();
format = tag;
}
else
{
format.AssignWithConversion("");
}
}
else
{
format.AssignWithConversion("");
}
}
else if (nsHTMLEditUtils::IsHeader(curNode))
{
nsAutoString tag;
nsEditor::GetTagString(curNode,tag);
tag.ToLowerCase();
format = tag;
}
else if (nsIEditProperty::p == atom.get() ||
nsIEditProperty::blockquote == atom.get() ||
nsIEditProperty::address == atom.get() ||
nsIEditProperty::pre == atom.get() )
{
atom->ToString(format);
}
// if this is the first node, we've found, remember it as the format
if (formatStr.EqualsWithConversion("x"))
formatStr = format;
// else make sure it matches previously found format
else if (format != formatStr)
{
bMixed = PR_TRUE;
break;
}
}
aMixed = bMixed;
outFormat = formatStr;
return res;
}
/********************************************************
* Protected rules methods
********************************************************/
nsresult
nsHTMLEditRules::WillInsert(nsISelection *aSelection, PRBool *aCancel)
{
nsresult res = nsTextEditRules::WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// we need to get the doc
nsCOMPtr<nsIDOMDocument>doc;
res = mEditor->GetDocument(getter_AddRefs(doc));
if (NS_FAILED(res)) return res;
if (!doc) return NS_ERROR_NULL_POINTER;
// for every property that is set, insert a new inline style node
res = CreateStyleForInsertText(aSelection, doc);
return res;
}
nsresult
nsHTMLEditRules::DidInsert(nsISelection *aSelection, nsresult aResult)
{
return nsTextEditRules::DidInsert(aSelection, aResult);
}
nsresult
nsHTMLEditRules::WillInsertText(PRInt32 aAction,
nsISelection *aSelection,
PRBool *aCancel,
PRBool *aHandled,
const nsString *inString,
nsString *outString,
PRInt32 aMaxLength)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
if (inString->IsEmpty() && (aAction != kInsertTextIME))
{
// HACK: this is a fix for bug 19395
// I can't outlaw all empty insertions
// because IME transaction depend on them
// There is more work to do to make the
// world safe for IME.
*aCancel = PR_TRUE;
*aHandled = PR_FALSE;
return NS_OK;
}
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_TRUE;
nsresult res;
nsCOMPtr<nsIDOMNode> selNode;
PRInt32 selOffset;
// if the selection isn't collapsed, delete it.
PRBool bCollapsed;
res = aSelection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
if (!bCollapsed)
{
res = mEditor->DeleteSelection(nsIEditor::eNone);
if (NS_FAILED(res)) return res;
}
res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
// get the (collapsed) selection location
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
// dont put text in places that cant have it
nsAutoString textTag; textTag.AssignWithConversion("__moz_text");
if (!mEditor->IsTextNode(selNode) && !mEditor->CanContainTag(selNode, textTag))
return NS_ERROR_FAILURE;
// we need to get the doc
nsCOMPtr<nsIDOMDocument>doc;
res = mEditor->GetDocument(getter_AddRefs(doc));
if (NS_FAILED(res)) return res;
if (!doc) return NS_ERROR_NULL_POINTER;
if (aAction == kInsertTextIME)
{
res = mEditor->InsertTextImpl(*inString, address_of(selNode), &selOffset, doc);
if (NS_FAILED(res)) return res;
}
else // aAction == kInsertText
{
// find where we are
nsCOMPtr<nsIDOMNode> curNode = selNode;
PRInt32 curOffset = selOffset;
// is our text going to be PREformatted?
// We remember this so that we know how to handle tabs.
PRBool isPRE;
res = mEditor->IsPreformatted(selNode, &isPRE);
if (NS_FAILED(res)) return res;
// turn off the edit listener: we know how to
// build the "doc changed range" ourselves, and it's
// must faster to do it once here than to track all
// the changes one at a time.
nsAutoLockListener lockit(&mListenerEnabled);
// dont spaz my selection in subtransactions
nsAutoTxnsConserveSelection dontSpazMySelection(mEditor);
nsSubsumeStr subStr;
const PRUnichar *unicodeBuf = inString->GetUnicode();
nsCOMPtr<nsIDOMNode> unused;
PRInt32 pos = 0;
// for efficiency, break out the pre case seperately. This is because
// its a lot cheaper to search the input string for only newlines than
// it is to search for both tabs and newlines.
if (isPRE)
{
char newlineChar = '\n';
while (unicodeBuf && (pos != -1) && (pos < (PRInt32)inString->Length()))
{
PRInt32 oldPos = pos;
PRInt32 subStrLen;
pos = inString->FindChar(newlineChar, PR_FALSE, oldPos);
if (pos != -1)
{
subStrLen = pos - oldPos;
// if first char is newline, then use just it
if (subStrLen == 0)
subStrLen = 1;
}
else
{
subStrLen = inString->Length() - oldPos;
pos = inString->Length();
}
subStr.Subsume((PRUnichar*)&unicodeBuf[oldPos], PR_FALSE, subStrLen);
// is it a return?
if (subStr.EqualsWithConversion("\n"))
{
res = mEditor->CreateBRImpl(address_of(curNode), &curOffset, address_of(unused), nsIEditor::eNone);
pos++;
}
else
{
res = mEditor->InsertTextImpl(subStr, address_of(curNode), &curOffset, doc);
}
if (NS_FAILED(res)) return res;
}
}
else
{
char specialChars[] = {'\t','\n',0};
nsAutoString tabString; tabString.AssignWithConversion(" ");
while (unicodeBuf && (pos != -1) && (pos < (PRInt32)inString->Length()))
{
PRInt32 oldPos = pos;
PRInt32 subStrLen;
pos = inString->FindCharInSet(specialChars, oldPos);
if (pos != -1)
{
subStrLen = pos - oldPos;
// if first char is newline, then use just it
if (subStrLen == 0)
subStrLen = 1;
}
else
{
subStrLen = inString->Length() - oldPos;
pos = inString->Length();
}
subStr.Subsume((PRUnichar*)&unicodeBuf[oldPos], PR_FALSE, subStrLen);
// is it a tab?
if (subStr.EqualsWithConversion("\t"))
{
res = mEditor->InsertTextImpl(tabString, address_of(curNode), &curOffset, doc);
pos++;
}
// is it a return?
else if (subStr.EqualsWithConversion("\n"))
{
res = mEditor->CreateBRImpl(address_of(curNode), &curOffset, address_of(unused), nsIEditor::eNone);
pos++;
}
else
{
res = mEditor->InsertTextImpl(subStr, address_of(curNode), &curOffset, doc);
}
if (NS_FAILED(res)) return res;
}
}
if (curNode) aSelection->Collapse(curNode, curOffset);
// manually update the doc changed range so that AfterEdit will clean up
// the correct portion of the document.
if (!mDocChangeRange)
{
mDocChangeRange = do_CreateInstance(kRangeCID);
if (!mDocChangeRange) return NS_ERROR_NULL_POINTER;
}
res = mDocChangeRange->SetStart(selNode, selOffset);
if (NS_FAILED(res)) return res;
if (curNode)
res = mDocChangeRange->SetEnd(curNode, curOffset);
else
res = mDocChangeRange->SetEnd(selNode, selOffset);
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult
nsHTMLEditRules::WillInsertBreak(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
// if the selection isn't collapsed, delete it.
PRBool bCollapsed;
nsresult res = aSelection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
if (!bCollapsed)
{
res = mEditor->DeleteSelection(nsIEditor::eNone);
if (NS_FAILED(res)) return res;
}
res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
// split any mailcites in the way
if (mFlags & nsIHTMLEditor::eEditorMailMask)
{
nsCOMPtr<nsIDOMNode> citeNode, selNode;
PRInt32 selOffset, newOffset;
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
res = GetTopEnclosingMailCite(selNode, address_of(citeNode));
if (NS_FAILED(res)) return res;
if (citeNode)
{
nsCOMPtr<nsIDOMNode> brNode;
res = mEditor->SplitNodeDeep(citeNode, selNode, selOffset, &newOffset);
if (NS_FAILED(res)) return res;
res = citeNode->GetParentNode(getter_AddRefs(selNode));
if (NS_FAILED(res)) return res;
res = mEditor->CreateBR(selNode, newOffset, address_of(brNode));
if (NS_FAILED(res)) return res;
// want selection before the break, and on same line
selPriv->SetInterlinePosition(PR_TRUE);
res = aSelection->Collapse(selNode, newOffset);
if (NS_FAILED(res)) return res;
*aHandled = PR_TRUE;
return NS_OK;
}
}
// smart splitting rules
nsCOMPtr<nsIDOMNode> node;
PRInt32 offset;
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(node), &offset);
if (NS_FAILED(res)) return res;
if (!node) return NS_ERROR_FAILURE;
// identify the block
nsCOMPtr<nsIDOMNode> blockParent;
if (nsEditor::IsBlockNode(node))
blockParent = node;
else
blockParent = mEditor->GetBlockNodeParent(node);
if (!blockParent) return NS_ERROR_FAILURE;
// headers: close (or split) header
else if (nsHTMLEditUtils::IsHeader(blockParent))
{
res = ReturnInHeader(aSelection, blockParent, node, offset);
*aHandled = PR_TRUE;
return NS_OK;
}
// paragraphs: special rules to look for <br>s
else if (nsHTMLEditUtils::IsParagraph(blockParent))
{
res = ReturnInParagraph(aSelection, blockParent, node, offset, aCancel, aHandled);
return NS_OK;
}
// list items: special rules to make new list items
else if (nsHTMLEditUtils::IsListItem(blockParent))
{
res = ReturnInListItem(aSelection, blockParent, node, offset);
*aHandled = PR_TRUE;
return NS_OK;
}
// its something else (body, div, td, ...): insert a normal br
else
{
nsCOMPtr<nsIDOMNode> brNode;
res = mEditor->CreateBR(node, offset, address_of(brNode));
if (NS_FAILED(res)) return res;
res = nsEditor::GetNodeLocation(brNode, address_of(node), &offset);
if (NS_FAILED(res)) return res;
// SetInterlinePosition(PR_TRUE) means we want the caret to stick to the content on the "right".
// We want the caret to stick to whatever is past the break. This is
// because the break is on the same line we were on, but the next content
// will be on the following line.
// An exception to this is if the break has a next sibling that is a block node.
// Then we stick to the left to aviod an uber caret.
nsCOMPtr<nsIDOMNode> siblingNode;
brNode->GetNextSibling(getter_AddRefs(siblingNode));
if (siblingNode && mEditor->IsBlockNode(siblingNode))
selPriv->SetInterlinePosition(PR_FALSE);
else
selPriv->SetInterlinePosition(PR_TRUE);
res = aSelection->Collapse(node, offset+1);
if (NS_FAILED(res)) return res;
*aHandled = PR_TRUE;
}
return res;
}
nsresult
nsHTMLEditRules::WillDeleteSelection(nsISelection *aSelection,
nsIEditor::EDirection aAction,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// if there is only bogus content, cancel the operation
if (mBogusNode)
{
*aCancel = PR_TRUE;
return NS_OK;
}
nsresult res = NS_OK;
PRBool bCollapsed;
res = aSelection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> startNode, selNode;
PRInt32 startOffset, selOffset;
// first check for table selection mode. If so,
// hand off to table editor.
nsCOMPtr<nsIDOMElement> cell;
res = mEditor->GetFirstSelectedCell(getter_AddRefs(cell), nsnull);
if (NS_SUCCEEDED(res) && cell)
{
res = mEditor->DeleteTableCellContents();
*aHandled = PR_TRUE;
return res;
}
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(startNode), &startOffset);
if (NS_FAILED(res)) return res;
if (!startNode) return NS_ERROR_FAILURE;
if (bCollapsed)
{
// easy case, in a text node:
if (mEditor->IsTextNode(startNode))
{
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(startNode);
PRUint32 strLength;
res = textNode->GetLength(&strLength);
if (NS_FAILED(res)) return res;
// at beginning of text node and backspaced?
if (!startOffset && (aAction == nsIEditor::ePrevious))
{
nsCOMPtr<nsIDOMNode> priorNode;
res = mEditor->GetPriorHTMLNode(startNode, address_of(priorNode));
if (NS_FAILED(res)) return res;
// if there is no prior node then cancel the deletion
if (!priorNode)
{
*aCancel = PR_TRUE;
return res;
}
// block parents the same?
if (mEditor->HasSameBlockNodeParent(startNode, priorNode))
{
// is prior node not a container? (ie, a br, hr, image...)
if (!mEditor->IsContainer(priorNode)) // MOOSE: anchors not handled
{
// delete the break, and join like nodes if appropriate
res = mEditor->DeleteNode(priorNode);
if (NS_FAILED(res)) return res;
// we did something, so lets say so.
*aHandled = PR_TRUE;
// get new prior node
res = mEditor->GetPriorHTMLNode(startNode, address_of(priorNode));
if (NS_FAILED(res)) return res;
// are they in same block?
if (mEditor->HasSameBlockNodeParent(startNode, priorNode))
{
// are they same type?
if (mEditor->IsTextNode(priorNode))
{
// if so, join them!
nsCOMPtr<nsIDOMNode> topParent;
priorNode->GetParentNode(getter_AddRefs(topParent));
res = JoinNodesSmart(priorNode,startNode,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
}
}
return res;
}
// is prior node a text node?
else if ( mEditor->IsTextNode(priorNode) )
{
// delete last character
PRUint32 offset;
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(priorNode);
nodeAsText->GetLength((PRUint32*)&offset);
res = aSelection->Collapse(priorNode,offset);
// just return without setting handled to true.
// default code will take care of actual deletion
return res;
}
else if ( mEditor->IsInlineNode(priorNode) )
{
// remember where we are
PRInt32 offset;
nsCOMPtr<nsIDOMNode> node;
res = mEditor->GetNodeLocation(priorNode, address_of(node), &offset);
if (NS_FAILED(res)) return res;
// delete it
res = mEditor->DeleteNode(priorNode);
if (NS_FAILED(res)) return res;
// we did something, so lets say so.
*aHandled = PR_TRUE;
// fix up selection
res = aSelection->Collapse(node,offset);
return res;
}
else return NS_OK; // punt to default
}
// deleting across blocks
nsCOMPtr<nsIDOMNode> leftParent = mEditor->GetBlockNodeParent(priorNode);
nsCOMPtr<nsIDOMNode> rightParent = mEditor->GetBlockNodeParent(startNode);
// if leftParent or rightParent is null, it's because the
// corresponding selection endpoint is in the body node.
if (!leftParent || !rightParent)
return NS_OK; // bail to default
// do not delete across table structures
if (nsHTMLEditUtils::IsTableElement(leftParent) || nsHTMLEditUtils::IsTableElement(rightParent))
{
*aCancel = PR_TRUE;
return NS_OK;
}
// are the blocks of same type?
if (mEditor->NodesSameType(leftParent, rightParent))
{
nsCOMPtr<nsIDOMNode> topParent;
leftParent->GetParentNode(getter_AddRefs(topParent));
*aHandled = PR_TRUE;
res = JoinNodesSmart(leftParent,rightParent,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
// else blocks not same type, bail to default
return NS_OK;
}
// at end of text node and deleted?
if ((startOffset == (PRInt32)strLength)
&& (aAction == nsIEditor::eNext))
{
nsCOMPtr<nsIDOMNode> nextNode;
res = mEditor->GetNextHTMLNode(startNode, address_of(nextNode));
if (NS_FAILED(res)) return res;
// if there is no next node, or it's not in the body, then cancel the deletion
if (!nextNode || !nsHTMLEditUtils::InBody(nextNode, mEditor))
{
*aCancel = PR_TRUE;
return res;
}
// block parents the same?
if (mEditor->HasSameBlockNodeParent(startNode, nextNode))
{
// is next node not a container? (ie, a br, hr, image...)
if (!mEditor->IsContainer(nextNode)) // MOOSE: anchors not handled
{
// delete the break, and join like nodes if appropriate
res = mEditor->DeleteNode(nextNode);
if (NS_FAILED(res)) return res;
// we did something, so lets say so.
*aHandled = PR_TRUE;
// get new next node
res = mEditor->GetNextHTMLNode(startNode, address_of(nextNode));
if (NS_FAILED(res)) return res;
// are they in same block?
if (mEditor->HasSameBlockNodeParent(startNode, nextNode))
{
// are they same type?
if ( mEditor->IsTextNode(nextNode) )
{
// if so, join them!
nsCOMPtr<nsIDOMNode> topParent;
nextNode->GetParentNode(getter_AddRefs(topParent));
res = JoinNodesSmart(startNode,nextNode,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
}
}
return res;
}
// is next node a text node?
else if ( mEditor->IsTextNode(nextNode) )
{
// delete first character
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(nextNode);
res = aSelection->Collapse(nextNode,0);
// just return without setting handled to true.
// default code will take care of actual deletion
return res;
}
else if ( mEditor->IsInlineNode(nextNode) )
{
PRInt32 offset;
nsCOMPtr<nsIDOMNode> node;
// remember where we are
res = mEditor->GetNodeLocation(nextNode, address_of(node), &offset);
if (NS_FAILED(res)) return res;
// delete it
res = mEditor->DeleteNode(nextNode);
if (NS_FAILED(res)) return res;
// we did something, so lets say so.
*aHandled = PR_TRUE;
// fix up selection
res = aSelection->Collapse(node,offset);
return res;
}
else return NS_OK; // punt to default
}
// deleting across blocks
nsCOMPtr<nsIDOMNode> leftParent = mEditor->GetBlockNodeParent(startNode);
nsCOMPtr<nsIDOMNode> rightParent = mEditor->GetBlockNodeParent(nextNode);
// if leftParent or rightParent is null, it's because the
// corresponding selection endpoint is in the body node.
if (!leftParent || !rightParent)
return NS_OK; // bail to default
// do not delete across table structures
if (nsHTMLEditUtils::IsTableElement(leftParent) || nsHTMLEditUtils::IsTableElement(rightParent))
{
*aCancel = PR_TRUE;
return NS_OK;
}
// are the blocks of same type?
if (mEditor->NodesSameType(leftParent, rightParent))
{
nsCOMPtr<nsIDOMNode> topParent;
leftParent->GetParentNode(getter_AddRefs(topParent));
*aHandled = PR_TRUE;
res = JoinNodesSmart(leftParent,rightParent,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
// else blocks not same type, bail to default
return NS_OK;
}
}
// else not in text node; we need to find right place to act on
else
{
nsCOMPtr<nsIDOMNode> nodeToDelete;
// first note that the right node to delete might be the one we
// are in. For example, if a list item is deleted one character at a time,
// eventually it will be empty (except for a moz-br). If the user hits
// backspace again, they expect the item itself to go away. Check to
// see if we are in an "empty" node.
// Note: do NOT delete table elements this way.
PRBool bIsEmptyNode;
res = mEditor->IsEmptyNode(startNode, &bIsEmptyNode, PR_TRUE, PR_FALSE);
if (bIsEmptyNode && !nsHTMLEditUtils::IsTableElement(startNode))
nodeToDelete = startNode;
else
{
// see if we are on empty line and need to delete it. This is true
// when a break is after a block and we are deleting backwards; or
// when a break is before a block and we are delting forwards. In
// these cases, we want to delete the break when we are between it
// and the block element, even though the break is on the "wrong"
// side of us.
nsCOMPtr<nsIDOMNode> maybeBreak;
nsCOMPtr<nsIDOMNode> maybeBlock;
if (aAction == nsIEditor::ePrevious)
{
res = mEditor->GetPriorHTMLSibling(startNode, startOffset, address_of(maybeBlock));
if (NS_FAILED(res)) return res;
res = mEditor->GetNextHTMLSibling(startNode, startOffset, address_of(maybeBreak));
if (NS_FAILED(res)) return res;
}
else if (aAction == nsIEditor::eNext)
{
res = mEditor->GetPriorHTMLSibling(startNode, startOffset, address_of(maybeBreak));
if (NS_FAILED(res)) return res;
res = mEditor->GetNextHTMLSibling(startNode, startOffset, address_of(maybeBlock));
if (NS_FAILED(res)) return res;
}
if (maybeBreak && maybeBlock &&
nsHTMLEditUtils::IsBreak(maybeBreak) && nsEditor::IsBlockNode(maybeBlock))
nodeToDelete = maybeBreak;
else if (aAction == nsIEditor::ePrevious)
res = mEditor->GetPriorHTMLNode(startNode, startOffset, address_of(nodeToDelete));
else if (aAction == nsIEditor::eNext)
res = mEditor->GetNextHTMLNode(startNode, startOffset, address_of(nodeToDelete));
else
return NS_OK;
}
if (NS_FAILED(res)) return res;
if (!nodeToDelete) return NS_ERROR_NULL_POINTER;
if (mBody == nodeToDelete)
{
*aCancel = PR_TRUE;
return res;
}
// if this node is text node, adjust selection
if (nsEditor::IsTextNode(nodeToDelete))
{
PRUint32 selPoint = 0;
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(nodeToDelete);
if (aAction == nsIEditor::ePrevious)
nodeAsText->GetLength(&selPoint);
res = aSelection->Collapse(nodeToDelete,selPoint);
return res;
}
else
{
// editable leaf node is not text; delete it.
// that's the default behavior
PRInt32 offset;
nsCOMPtr<nsIDOMNode> node;
res = nsEditor::GetNodeLocation(nodeToDelete, address_of(node), &offset);
if (NS_FAILED(res)) return res;
// EXCEPTION: if it's a mozBR, we have to check and see if
// there is a br in front of it. If so, we must delete both.
// else you get this: deletion code deletes mozBR, then selection
// adjusting code puts it back in. doh
if (nsHTMLEditUtils::IsMozBR(nodeToDelete))
{
nsCOMPtr<nsIDOMNode> brNode;
res = mEditor->GetPriorHTMLNode(nodeToDelete, address_of(brNode));
if (nsHTMLEditUtils::IsBreak(brNode))
{
// is brNode also a descendant of same block?
nsCOMPtr<nsIDOMNode> block, brBlock;
block = mEditor->GetBlockNodeParent(nodeToDelete);
brBlock = mEditor->GetBlockNodeParent(brNode);
if (block == brBlock)
{
// delete both breaks
res = mEditor->DeleteNode(brNode);
if (NS_FAILED(res)) return res;
res = mEditor->DeleteNode(nodeToDelete);
*aHandled = PR_TRUE;
return res;
}
// else fall through
}
// else fall through
}
// adjust selection to be right after it
res = aSelection->Collapse(node, offset+1);
if (NS_FAILED(res)) return res;
res = mEditor->DeleteNode(nodeToDelete);
*aHandled = PR_TRUE;
return res;
}
}
return NS_OK;
}
// else we have a non collapsed selection
// figure out if the enpoints are in nodes that can be merged
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 endOffset;
res = mEditor->GetEndNodeAndOffset(aSelection, address_of(endNode), &endOffset);
if (NS_FAILED(res))
{
return res;
}
if (endNode.get() != startNode.get())
{
// block parents the same? use default deletion
if (mEditor->HasSameBlockNodeParent(startNode, endNode)) return NS_OK;
// deleting across blocks
// are the blocks of same type?
nsCOMPtr<nsIDOMNode> leftParent;
nsCOMPtr<nsIDOMNode> rightParent;
// XXX: Fix for bug #10815: Crash deleting selected text and table.
// Make sure leftParent and rightParent are never NULL. This
// can happen if we call GetBlockNodeParent() and the node we
// pass in is a body node.
//
// Should we be calling IsBlockNode() instead of IsBody() here?
if (nsHTMLEditUtils::IsBody(startNode))
leftParent = startNode;
else
leftParent = mEditor->GetBlockNodeParent(startNode);
if (nsHTMLEditUtils::IsBody(endNode))
rightParent = endNode;
else
rightParent = mEditor->GetBlockNodeParent(endNode);
// are the blocks siblings?
nsCOMPtr<nsIDOMNode> leftBlockParent;
nsCOMPtr<nsIDOMNode> rightBlockParent;
leftParent->GetParentNode(getter_AddRefs(leftBlockParent));
rightParent->GetParentNode(getter_AddRefs(rightBlockParent));
// MOOSE: this could conceivably screw up a table.. fix me.
if ( (leftBlockParent.get() == rightBlockParent.get())
&& (mEditor->NodesSameType(leftParent, rightParent)) )
{
nsCOMPtr<nsIDOMNode> topParent;
leftParent->GetParentNode(getter_AddRefs(topParent));
if (nsHTMLEditUtils::IsParagraph(leftParent))
{
// first delete the selection
*aHandled = PR_TRUE;
res = mEditor->DeleteSelectionImpl(aAction);
if (NS_FAILED(res)) return res;
// then join para's, insert break
res = mEditor->JoinNodeDeep(leftParent,rightParent,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
if (nsHTMLEditUtils::IsListItem(leftParent)
|| nsHTMLEditUtils::IsHeader(leftParent))
{
// first delete the selection
*aHandled = PR_TRUE;
res = mEditor->DeleteSelectionImpl(aAction);
if (NS_FAILED(res)) return res;
// join blocks
res = mEditor->JoinNodeDeep(leftParent,rightParent,address_of(selNode),&selOffset);
if (NS_FAILED(res)) return res;
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
}
// else blocks not same type, or not siblings. Delete everything except
// table elements.
*aHandled = PR_TRUE;
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_UNEXPECTED;
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
{
nsCOMPtr<nsISupports> currentItem;
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_UNEXPECTED;
// build a list of nodes in the range
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsTrivialFunctor functor;
nsDOMSubtreeIterator iter;
res = iter.Init(range);
if (NS_FAILED(res)) return res;
res = iter.MakeList(functor, address_of(arrayOfNodes));
if (NS_FAILED(res)) return res;
// now that we have the list, delete non table elements
PRUint32 listCount;
PRUint32 j;
nsCOMPtr<nsIDOMNode> somenode;
nsCOMPtr<nsISupports> isupports;
arrayOfNodes->Count(&listCount);
for (j = 0; j < listCount; j++)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
somenode = do_QueryInterface(isupports);
res = DeleteNonTableElements(somenode);
arrayOfNodes->RemoveElementAt(0);
}
}
// check endopints for possible text deletion.
// we can assume that if text node is found, we can
// delete to end or to begining as appropriate,
// since the case where both sel endpoints in same
// text node was already handled (we wouldn't be here)
if ( mEditor->IsTextNode(startNode) )
{
// delete to last character
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
PRUint32 len;
nodeAsText = do_QueryInterface(startNode);
nodeAsText->GetLength(&len);
if (len > (PRUint32)startOffset)
{
res = mEditor->DeleteText(nodeAsText,startOffset,len-startOffset);
if (NS_FAILED(res)) return res;
}
}
if ( mEditor->IsTextNode(endNode) )
{
// delete to first character
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(endNode);
if (endOffset)
{
res = mEditor->DeleteText(nodeAsText,0,endOffset);
if (NS_FAILED(res)) return res;
}
}
if (aAction == nsIEditor::eNext)
{
res = aSelection->Collapse(endNode,0);
}
else
{
res = aSelection->Collapse(startNode,startOffset);
}
return NS_OK;
}
return res;
}
nsresult
nsHTMLEditRules::DeleteNonTableElements(nsIDOMNode *aNode)
{
if (!aNode) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
if (nsHTMLEditUtils::IsTableElement(aNode) && !nsHTMLEditUtils::IsTable(aNode))
{
nsCOMPtr<nsIDOMNodeList> children;
aNode->GetChildNodes(getter_AddRefs(children));
if (children)
{
PRUint32 len;
children->GetLength(&len);
if (!len) return NS_OK;
PRInt32 j;
for (j=len-1; j>=0; j--)
{
nsCOMPtr<nsIDOMNode> node;
children->Item(j,getter_AddRefs(node));
res = DeleteNonTableElements(node);
if (NS_FAILED(res)) return res;
}
}
}
else
{
res = mEditor->DeleteNode(aNode);
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult
nsHTMLEditRules::WillMakeList(nsISelection *aSelection,
const nsString *aListType,
PRBool aEntireList,
PRBool *aCancel,
PRBool *aHandled,
const nsString *aItemType)
{
if (!aSelection || !aListType || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
// deduce what tag to use for list items
nsAutoString itemType;
if (aItemType)
itemType = *aItemType;
else if (aListType->EqualsWithConversion("dl"))
itemType.AssignWithConversion("dd");
else
itemType.AssignWithConversion("li");
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
*aHandled = PR_TRUE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetListActionNodes(address_of(arrayOfNodes), aEntireList);
if (NS_FAILED(res)) return res;
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
// check if al our nodes are <br>s
PRBool bOnlyBreaks = PR_TRUE;
PRInt32 j;
for (j=0; j<(PRInt32)listCount; j++)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(j));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
// if curNode is not a Break, we're done
if (!nsHTMLEditUtils::IsBreak(curNode))
{
bOnlyBreaks = PR_FALSE;
break;
}
}
// if no nodes, we make empty list. Ditto if the user tried to make a list of some # of breaks.
if (!listCount || bOnlyBreaks)
{
nsCOMPtr<nsIDOMNode> parent, theList, theListItem;
PRInt32 offset;
// if only breaks, delete them
if (bOnlyBreaks)
{
for (j=0; j<(PRInt32)listCount; j++)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(j));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
}
}
// get selection location
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
// make sure we can put a list here
res = SplitAsNeeded(aListType, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(*aListType, parent, offset, getter_AddRefs(theList));
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(itemType, theList, 0, getter_AddRefs(theListItem));
if (NS_FAILED(res)) return res;
// put selection in new list item
res = aSelection->Collapse(theListItem,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = PR_TRUE;
return res;
}
// if there is only one node in the array, and it is a list, div, or blockquote,
// then look inside of it until we find what we want to make a list out of.
if (listCount == 1)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports) );
while (nsHTMLEditUtils::IsDiv(curNode)
|| nsHTMLEditUtils::IsList(curNode)
|| nsHTMLEditUtils::IsBlockquote(curNode))
{
// dive as long as there is only one child, and it is a list, div, blockquote
PRUint32 numChildren;
res = mEditor->CountEditableChildren(curNode, numChildren);
if (NS_FAILED(res)) return res;
if (numChildren == 1)
{
// keep diving
nsCOMPtr <nsIDOMNode> tmpNode = nsEditor::GetChildAt(curNode, 0);
if (nsHTMLEditUtils::IsDiv(tmpNode)
|| nsHTMLEditUtils::IsList(tmpNode)
|| nsHTMLEditUtils::IsBlockquote(tmpNode))
{
// check editablility XXX floppy moose
curNode = tmpNode;
}
else break;
}
else break;
}
// we've found innermost list/blockquote/div:
// replace the one node in the array with this node
isupports = do_QueryInterface(curNode);
arrayOfNodes->ReplaceElementAt(isupports, 0);
}
// Next we detect all the transitions in the array, where a transition
// means that adjacent nodes in the array don't have the same parent.
nsVoidArray transitionList;
res = MakeTransitionList(arrayOfNodes, &transitionList);
if (NS_FAILED(res)) return res;
// Ok, now go through all the nodes and put then in the list,
// or whatever is approriate. Wohoo!
arrayOfNodes->Count(&listCount);
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curList;
nsCOMPtr<nsIDOMNode> prevListItem;
PRInt32 i;
for (i=0; i<(PRInt32)listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> newBlock;
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
// if curNode is a Break, delete it, and quit remembering prev list item
if (nsHTMLEditUtils::IsBreak(curNode))
{
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
prevListItem = 0;
continue;
}
// if curNode is an empty inline container, delete it
else if (mEditor->IsInlineNode(curNode) && mEditor->IsContainer(curNode))
{
PRBool bEmpty;
res = mEditor->IsEmptyNode(curNode, &bEmpty);
if (NS_FAILED(res)) return res;
if (bEmpty)
{
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
continue;
}
}
if (nsHTMLEditUtils::IsList(curNode))
{
nsAutoString existingListStr;
res = mEditor->GetTagString(curNode, existingListStr);
existingListStr.ToLowerCase();
// do we have a curList already?
if (curList && !nsHTMLEditUtils::IsDescendantOf(curNode, curList))
{
// move all of our children into curList.
// cheezy way to do it: move whole list and then
// RemoveContainer() on the list.
// ConvertListType first: that routine
// handles converting the list item types, if needed
res = mEditor->MoveNode(curNode, curList, -1);
if (NS_FAILED(res)) return res;
res = ConvertListType(curNode, address_of(newBlock), *aListType, itemType);
if (NS_FAILED(res)) return res;
res = mEditor->RemoveContainer(newBlock);
if (NS_FAILED(res)) return res;
}
else
{
// replace list with new list type
res = ConvertListType(curNode, address_of(newBlock), *aListType, itemType);
if (NS_FAILED(res)) return res;
curList = newBlock;
}
continue;
}
if (nsHTMLEditUtils::IsListItem(curNode))
{
nsAutoString existingListStr;
res = mEditor->GetTagString(curParent, existingListStr);
existingListStr.ToLowerCase();
if ( existingListStr != *aListType )
{
// list item is in wrong type of list.
// if we dont have a curList, split the old list
// and make a new list of correct type.
if (!curList || nsHTMLEditUtils::IsDescendantOf(curNode, curList))
{
res = mEditor->SplitNode(curParent, offset, getter_AddRefs(newBlock));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> p;
PRInt32 o;
res = nsEditor::GetNodeLocation(curParent, address_of(p), &o);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(*aListType, p, o, getter_AddRefs(curList));
if (NS_FAILED(res)) return res;
}
// move list item to new list
res = mEditor->MoveNode(curNode, curList, -1);
if (NS_FAILED(res)) return res;
// convert list item type if needed
if (!mEditor->NodeIsType(curNode,itemType))
{
res = mEditor->ReplaceContainer(curNode, address_of(newBlock), itemType);
if (NS_FAILED(res)) return res;
}
}
else
{
// item is in right type of list. But we might still have to move it.
// and we might need to convert list item types.
if (!curList)
curList = curParent;
else
{
if (curParent != curList)
{
// move list item to new list
res = mEditor->MoveNode(curNode, curList, -1);
if (NS_FAILED(res)) return res;
}
}
if (!mEditor->NodeIsType(curNode,itemType))
{
res = mEditor->ReplaceContainer(curNode, address_of(newBlock), itemType);
if (NS_FAILED(res)) return res;
}
}
continue;
}
// need to make a list to put things in if we haven't already,
// or if this node doesn't go in list we used earlier.
if (!curList) // || transitionList[i])
{
res = SplitAsNeeded(aListType, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(*aListType, curParent, offset, getter_AddRefs(curList));
if (NS_FAILED(res)) return res;
// curList is now the correct thing to put curNode in
prevListItem = 0;
}
// if curNode isn't a list item, we must wrap it in one
nsCOMPtr<nsIDOMNode> listItem;
if (!nsHTMLEditUtils::IsListItem(curNode))
{
if (nsEditor::IsInlineNode(curNode) && prevListItem)
{
// this is a continuation of some inline nodes that belong together in
// the same list item. use prevListItem
PRUint32 listItemLen;
res = mEditor->GetLengthOfDOMNode(prevListItem, listItemLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, prevListItem, listItemLen);
if (NS_FAILED(res)) return res;
}
else
{
// don't wrap li around a paragraph. instead replace paragraph with li
if (nsHTMLEditUtils::IsParagraph(curNode))
{
res = mEditor->ReplaceContainer(curNode, address_of(listItem), itemType);
}
else
{
res = mEditor->InsertContainerAbove(curNode, address_of(listItem), itemType);
}
if (NS_FAILED(res)) return res;
if (nsEditor::IsInlineNode(curNode))
prevListItem = listItem;
}
}
else
{
listItem = curNode;
}
if (listItem) // if we made a new list item, deal with it
{
// tuck the listItem into the end of the active list
PRUint32 listLen;
res = mEditor->GetLengthOfDOMNode(curList, listLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(listItem, curList, listLen);
if (NS_FAILED(res)) return res;
}
}
return res;
}
nsresult
nsHTMLEditRules::WillRemoveList(nsISelection *aSelection,
PRBool aOrdered,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_TRUE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
nsCOMPtr<nsISupportsArray> arrayOfRanges;
nsresult res = GetPromotedRanges(aSelection, address_of(arrayOfRanges), kMakeList);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, address_of(arrayOfNodes), kMakeList);
if (NS_FAILED(res)) return res;
// Remove all non-editable nodes. Leave them be.
PRUint32 listCount;
PRInt32 i;
arrayOfNodes->Count(&listCount);
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> testNode( do_QueryInterface(isupports ) );
if (!mEditor->IsEditable(testNode))
{
arrayOfNodes->RemoveElementAt(i);
}
}
// Only act on lists or list items in the array
nsCOMPtr<nsIDOMNode> curParent;
for (i=0; i<(PRInt32)listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
if (nsHTMLEditUtils::IsListItem(curNode)) // unlist this listitem
{
PRBool bOutOfList;
do
{
res = PopListItem(curNode, &bOutOfList);
if (NS_FAILED(res)) return res;
} while (!bOutOfList); // keep popping it out until it's not in a list anymore
}
else if (nsHTMLEditUtils::IsList(curNode)) // node is a list, move list items out
{
nsCOMPtr<nsIDOMNode> child;
curNode->GetLastChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child))
{
PRBool bOutOfList;
do
{
res = PopListItem(child, &bOutOfList);
if (NS_FAILED(res)) return res;
} while (!bOutOfList); // keep popping it out until it's not in a list anymore
}
else
{
// delete any non- list items for now
res = mEditor->DeleteNode(child);
if (NS_FAILED(res)) return res;
}
curNode->GetLastChild(getter_AddRefs(child));
}
// delete the now-empty list
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
}
}
return res;
}
nsresult
nsHTMLEditRules::WillMakeDefListItem(nsISelection *aSelection,
const nsString *aItemType,
PRBool aEntireList,
PRBool *aCancel,
PRBool *aHandled)
{
// for now we let WillMakeList handle this
nsAutoString listType;
listType.AssignWithConversion("dl");
return WillMakeList(aSelection, &listType, aEntireList, aCancel, aHandled, aItemType);
}
nsresult
nsHTMLEditRules::WillMakeBasicBlock(nsISelection *aSelection,
const nsString *aBlockType,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
nsresult res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mEditor);
*aHandled = PR_TRUE;
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(aSelection, address_of(arrayOfRanges), kMakeBasicBlock);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, address_of(arrayOfNodes), kMakeBasicBlock);
if (NS_FAILED(res)) return res;
// if no nodes, we make empty block.
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
if (!listCount)
{
nsCOMPtr<nsIDOMNode> parent, theBlock;
PRInt32 offset;
// get selection location
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
// make sure we can put a block here
res = SplitAsNeeded(aBlockType, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(*aBlockType, parent, offset, getter_AddRefs(theBlock));
if (NS_FAILED(res)) return res;
// put selection in new block
res = aSelection->Collapse(theBlock,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = PR_TRUE;
return res;
}
else
{
// Ok, now go through all the nodes and make the right kind of blocks,
// or whatever is approriate. Wohoo!
// Note: blockquote is handled a little differently
if (aBlockType->EqualsWithConversion("blockquote"))
res = MakeBlockquote(arrayOfNodes);
else
res = ApplyBlockStyle(arrayOfNodes, aBlockType);
return res;
}
return res;
}
nsresult
nsHTMLEditRules::DidMakeBasicBlock(nsISelection *aSelection,
nsRulesInfo *aInfo, nsresult aResult)
{
if (!aSelection) return NS_ERROR_NULL_POINTER;
// check for empty block. if so, put a moz br in it.
PRBool isCollapsed;
nsresult res = aSelection->GetIsCollapsed(&isCollapsed);
if (NS_FAILED(res)) return res;
if (!isCollapsed) return NS_OK;
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
res = nsEditor::GetStartNodeAndOffset(aSelection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
res = InsertMozBRIfNeeded(parent);
return res;
}
nsresult
nsHTMLEditRules::WillIndent(nsISelection *aSelection, PRBool *aCancel, PRBool * aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
*aHandled = PR_TRUE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(aSelection, address_of(arrayOfRanges), kIndent);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, address_of(arrayOfNodes), kIndent);
if (NS_FAILED(res)) return res;
// if no nodes, we make empty block.
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
if (!listCount)
{
nsCOMPtr<nsIDOMNode> parent, theBlock;
PRInt32 offset;
nsAutoString quoteType; quoteType.AssignWithConversion("blockquote");
// get selection location
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
// make sure we can put a block here
res = SplitAsNeeded(&quoteType, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(quoteType, parent, offset, getter_AddRefs(theBlock));
if (NS_FAILED(res)) return res;
// put selection in new block
res = aSelection->Collapse(theBlock,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = PR_TRUE;
return res;
}
// Next we detect all the transitions in the array, where a transition
// means that adjacent nodes in the array don't have the same parent.
nsVoidArray transitionList;
res = MakeTransitionList(arrayOfNodes, &transitionList);
if (NS_FAILED(res)) return res;
// Ok, now go through all the nodes and put them in a blockquote,
// or whatever is appropriate. Wohoo!
PRInt32 i;
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curQuote;
nsCOMPtr<nsIDOMNode> curList;
for (i=0; i<(PRInt32)listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
// some logic for putting list items into nested lists...
if (nsHTMLEditUtils::IsList(curParent))
{
if (!curList || transitionList[i])
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
listTag.ToLowerCase();
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(listTag, curParent, offset, getter_AddRefs(curList));
if (NS_FAILED(res)) return res;
// curList is now the correct thing to put curNode in
}
// tuck the node into the end of the active list
PRUint32 listLen;
res = mEditor->GetLengthOfDOMNode(curList, listLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, curList, listLen);
if (NS_FAILED(res)) return res;
}
else // not a list item, use blockquote
{
// need to make a blockquote to put things in if we haven't already,
// or if this node doesn't go in blockquote we used earlier.
if (!curQuote) // || transitionList[i])
{
nsAutoString quoteType; quoteType.AssignWithConversion("blockquote");
res = SplitAsNeeded(&quoteType, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(quoteType, curParent, offset, getter_AddRefs(curQuote));
if (NS_FAILED(res)) return res;
/* !!!!!!!!!!!!!!! TURNED OFF PER BUG 33213 !!!!!!!!!!!!!!!!!!!!
// set style to not have unwanted vertical margins
nsCOMPtr<nsIDOMElement> quoteElem = do_QueryInterface(curQuote);
res = mEditor->SetAttribute(quoteElem, NS_ConvertASCIItoUCS2("style"), NS_ConvertASCIItoUCS2("margin: 0 0 0 40px;"));
if (NS_FAILED(res)) return res;
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
// curQuote is now the correct thing to put curNode in
}
// tuck the node into the end of the active blockquote
PRUint32 quoteLen;
res = mEditor->GetLengthOfDOMNode(curQuote, quoteLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, curQuote, quoteLen);
if (NS_FAILED(res)) return res;
}
}
return res;
}
nsresult
nsHTMLEditRules::WillOutdent(nsISelection *aSelection, PRBool *aCancel, PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = PR_FALSE;
*aHandled = PR_TRUE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
nsresult res = NS_OK;
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(aSelection, address_of(arrayOfRanges), kOutdent);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, address_of(arrayOfNodes), kOutdent);
if (NS_FAILED(res)) return res;
// Next we detect all the transitions in the array, where a transition
// means that adjacent nodes in the array don't have the same parent.
nsVoidArray transitionList;
res = MakeTransitionList(arrayOfNodes, &transitionList);
if (NS_FAILED(res)) return res;
// Ok, now go through all the nodes and remove a level of blockquoting,
// or whatever is appropriate. Wohoo!
PRUint32 listCount;
PRInt32 i;
arrayOfNodes->Count(&listCount);
nsCOMPtr<nsIDOMNode> curParent;
for (i=0; i<(PRInt32)listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
if (nsHTMLEditUtils::IsList(curParent)) // move node out of list
{
if (nsHTMLEditUtils::IsList(curNode)) // just unwrap this sublist
{
res = mEditor->RemoveContainer(curNode);
if (NS_FAILED(res)) return res;
}
else // we are moving a list item, but not whole list
{
PRBool bOutOfList;
res = PopListItem(curNode, &bOutOfList);
if (NS_FAILED(res)) return res;
}
}
else if (nsHTMLEditUtils::IsList(curNode)) // node is a list, but parent is non-list: move list items out
{
nsCOMPtr<nsIDOMNode> child;
curNode->GetLastChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child))
{
PRBool bOutOfList;
res = PopListItem(child, &bOutOfList);
if (NS_FAILED(res)) return res;
}
else
{
// delete any non- list items for now
res = mEditor->DeleteNode(child);
if (NS_FAILED(res)) return res;
}
curNode->GetLastChild(getter_AddRefs(child));
}
// delete the now-empty list
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
}
else if (transitionList[i]) // not list related - look for enclosing blockquotes and remove
{
// look for a blockquote somewhere above us and remove it.
// this is a hack until i think about outdent for real.
nsCOMPtr<nsIDOMNode> n = curNode;
nsCOMPtr<nsIDOMNode> tmp;
while (!nsHTMLEditUtils::IsBody(n))
{
if (nsHTMLEditUtils::IsBlockquote(n))
{
res = AddTerminatingBR(n);
if (NS_FAILED(res)) return res;
mEditor->RemoveContainer(n);
break;
}
n->GetParentNode(getter_AddRefs(tmp));
n = tmp;
}
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ConvertListType: convert list type and list item type.
//
//
nsresult
nsHTMLEditRules::ConvertListType(nsIDOMNode *aList,
nsCOMPtr<nsIDOMNode> *outList,
const nsString& aListType,
const nsString& aItemType)
{
if (!aList || !outList) return NS_ERROR_NULL_POINTER;
*outList = aList; // we migvht not need to change the list
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> child, temp;
aList->GetFirstChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child) && !mEditor->NodeIsType(child, aItemType))
{
res = mEditor->ReplaceContainer(child, address_of(temp), aItemType);
if (NS_FAILED(res)) return res;
child = temp;
}
else if (nsHTMLEditUtils::IsList(child) && !mEditor->NodeIsType(child, aListType))
{
res = mEditor->ReplaceContainer(child, address_of(temp), aListType);
if (NS_FAILED(res)) return res;
child = temp;
}
child->GetNextSibling(getter_AddRefs(temp));
child = temp;
}
if (!mEditor->NodeIsType(aList, aListType))
{
res = mEditor->ReplaceContainer(aList, outList, aListType);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// CreateStyleForInsertText: take care of clearing and setting appropriate
// style nodes for text insertion.
//
//
nsresult
nsHTMLEditRules::CreateStyleForInsertText(nsISelection *aSelection, nsIDOMDocument *aDoc)
{
if (!aSelection || !aDoc) return NS_ERROR_NULL_POINTER;
if (!mEditor->mTypeInState) return NS_ERROR_NULL_POINTER;
PRBool weDidSometing = PR_FALSE;
nsCOMPtr<nsIDOMNode> node;
PRInt32 offset;
nsresult res = mEditor->GetStartNodeAndOffset(aSelection, address_of(node), &offset);
if (NS_FAILED(res)) return res;
PropItem *item = nsnull;
// process clearing any styles first
mEditor->mTypeInState->TakeClearProperty(&item);
while (item)
{
nsCOMPtr<nsIDOMNode> leftNode, rightNode, secondSplitParent, newSelParent;
res = mEditor->SplitStyleAbovePoint(address_of(node), &offset, item->tag, &item->attr, address_of(leftNode), address_of(rightNode));
if (NS_FAILED(res)) return res;
if (rightNode)
{
res = mEditor->GetLeftmostChild(rightNode, getter_AddRefs(secondSplitParent));
if (NS_FAILED(res)) return res;
offset = 0;
res = mEditor->SplitStyleAbovePoint(address_of(secondSplitParent), &offset, item->tag, &(item->attr), address_of(leftNode), address_of(rightNode));
if (NS_FAILED(res)) return res;
// should be impossible to not get a new leftnode here
if (!leftNode) return NS_ERROR_FAILURE;
res = mEditor->GetLeftmostChild(leftNode, getter_AddRefs(newSelParent));
if (NS_FAILED(res)) return res;
// register a rangeStore item that points at the new heirarchy.
// This is so we can know where to put the selection after we call
// RemoveStyleInside(). RemoveStyleInside() could remove any and all of those nodes,
// so I have to use the range tracking system to find the right spot to put selection.
nsRangeStore *rangeItem = new nsRangeStore();
if (!rangeItem) return NS_ERROR_NULL_POINTER;
rangeItem->startNode = newSelParent;
rangeItem->endNode = newSelParent;
rangeItem->startOffset = 0;
rangeItem->endOffset = 0;
mEditor->mRangeUpdater.RegisterRangeItem(rangeItem);
// remove the style on this new heirarchy
res = mEditor->RemoveStyleInside(leftNode, item->tag, &(item->attr));
if (NS_FAILED(res)) return res;
// reset our node offset values to the resulting new sel point
mEditor->mRangeUpdater.DropRangeItem(rangeItem);
node = rangeItem->startNode;
offset = rangeItem->startOffset;
delete rangeItem;
}
// we own item now (TakeClearProperty hands ownership to us)
delete item;
mEditor->mTypeInState->TakeClearProperty(&item);
weDidSometing = PR_TRUE;
}
// then process setting any styles
PRInt32 relFontSize;
res = mEditor->mTypeInState->TakeRelativeFontSize(&relFontSize);
if (NS_FAILED(res)) return res;
res = mEditor->mTypeInState->TakeSetProperty(&item);
if (NS_FAILED(res)) return res;
if (item || relFontSize) // we have at least one style to add; make a
{ // new text node to insert style nodes above.
if (mEditor->IsTextNode(node))
{
// if we are in a text node, split it
res = mEditor->SplitNodeDeep(node, node, offset, &offset);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> tmp;
node->GetParentNode(getter_AddRefs(tmp));
node = tmp;
}
nsCOMPtr<nsIDOMNode> newNode;
nsCOMPtr<nsIDOMText> nodeAsText;
res = aDoc->CreateTextNode(nsAutoString(), getter_AddRefs(nodeAsText));
if (NS_FAILED(res)) return res;
if (!nodeAsText) return NS_ERROR_NULL_POINTER;
newNode = do_QueryInterface(nodeAsText);
res = mEditor->InsertNode(newNode, node, offset);
if (NS_FAILED(res)) return res;
node = newNode;
offset = 0;
weDidSometing = PR_TRUE;
if (relFontSize)
{
PRInt32 j, dir;
// dir indicated bigger versus smaller. 1 = bigger, -1 = smaller
if (relFontSize > 0) dir=1;
else dir = -1;
for (j=0; j<abs(relFontSize); j++)
{
res = mEditor->RelativeFontChangeOnTextNode(dir, nodeAsText, 0, -1);
if (NS_FAILED(res)) return res;
}
}
while (item)
{
res = mEditor->SetInlinePropertyOnNode(node, item->tag, &item->attr, &item->value);
if (NS_FAILED(res)) return res;
// we own item now (TakeSetProperty hands ownership to us)
delete item;
mEditor->mTypeInState->TakeSetProperty(&item);
}
}
if (weDidSometing)
return aSelection->Collapse(node, offset);
return res;
}
///////////////////////////////////////////////////////////////////////////
// IsEmptyBlock: figure out if aNode is (or is inside) an empty block.
// A block can have children and still be considered empty,
// if the children are empty or non-editable.
//
nsresult
nsHTMLEditRules::IsEmptyBlock(nsIDOMNode *aNode,
PRBool *outIsEmptyBlock,
PRBool aMozBRDoesntCount,
PRBool aListItemsNotEmpty)
{
if (!aNode || !outIsEmptyBlock) return NS_ERROR_NULL_POINTER;
*outIsEmptyBlock = PR_TRUE;
// nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> nodeToTest;
if (nsEditor::IsBlockNode(aNode)) nodeToTest = do_QueryInterface(aNode);
// else nsCOMPtr<nsIDOMElement> block;
// looks like I forgot to finish this. Wonder what I was going to do?
if (!nodeToTest) return NS_ERROR_NULL_POINTER;
return mEditor->IsEmptyNode(nodeToTest, outIsEmptyBlock,
aMozBRDoesntCount, aListItemsNotEmpty);
}
nsresult
nsHTMLEditRules::WillAlign(nsISelection *aSelection,
const nsString *alignType,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
if (NS_FAILED(res)) return res;
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
*aHandled = PR_TRUE;
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(aSelection, address_of(arrayOfRanges), kAlign);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
nsCOMPtr<nsISupportsArray> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, address_of(arrayOfNodes), kAlign);
if (NS_FAILED(res)) return res;
// if we don't have any nodes, or we have only a single br, then we are
// creating an empty alignment div. We have to do some different things for these.
PRBool emptyDiv = PR_FALSE;
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
if (!listCount) emptyDiv = PR_TRUE;
if (listCount == 1)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
nsCOMPtr<nsIDOMNode> theNode( do_QueryInterface(isupports ) );
if (nsHTMLEditUtils::IsBreak(theNode))
{
emptyDiv = PR_TRUE;
}
}
if (emptyDiv)
{
PRInt32 offset;
nsCOMPtr<nsIDOMNode> brNode, parent, theDiv, sib;
nsAutoString divType; divType.AssignWithConversion("div");
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
res = SplitAsNeeded(&divType, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
// consume a trailing br, if any. This is to keep an alignment from
// creating extra lines, if possible.
res = mEditor->GetNextHTMLNode(parent, offset, address_of(brNode));
if (NS_FAILED(res)) return res;
if (brNode && nsHTMLEditUtils::IsBreak(brNode))
{
// making use of html structure... if next node after where
// we are putting our div is not a block, then the br we
// found is in same block we are, so its safe to consume it.
res = mEditor->GetNextHTMLSibling(parent, offset, address_of(sib));
if (NS_FAILED(res)) return res;
if (!nsEditor::IsBlockNode(sib))
{
res = mEditor->DeleteNode(brNode);
if (NS_FAILED(res)) return res;
}
}
res = mEditor->CreateNode(divType, parent, offset, getter_AddRefs(theDiv));
if (NS_FAILED(res)) return res;
// set up the alignment on the div
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(theDiv);
nsAutoString attr; attr.AssignWithConversion("align");
res = mEditor->SetAttribute(divElem, attr, *alignType);
if (NS_FAILED(res)) return res;
*aHandled = PR_TRUE;
// put in a moz-br so that it won't get deleted
res = CreateMozBR(theDiv, 0, address_of(brNode));
if (NS_FAILED(res)) return res;
res = aSelection->Collapse(theDiv, 0);
selectionResetter.Abort(); // dont reset our selection in this case.
return res;
}
// Next we detect all the transitions in the array, where a transition
// means that adjacent nodes in the array don't have the same parent.
nsVoidArray transitionList;
res = MakeTransitionList(arrayOfNodes, &transitionList);
if (NS_FAILED(res)) return res;
// Ok, now go through all the nodes and give them an align attrib or put them in a div,
// or whatever is appropriate. Wohoo!
PRInt32 i;
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curDiv;
for (i=0; i<(PRInt32)listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(isupports ) );
PRInt32 offset;
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
// if it's a div, don't nest it, just set the alignment
if (nsHTMLEditUtils::IsDiv(curNode))
{
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(curNode);
nsAutoString attr; attr.AssignWithConversion("align");
res = mEditor->SetAttribute(divElem, attr, *alignType);
if (NS_FAILED(res)) return res;
// clear out curDiv so that we don't put nodes after this one into it
curDiv = 0;
continue;
}
// if it's a table element (but not a table) or a list item, forget any "current" div, and
// instead put divs inside the appropriate block (td, li, etc)
if ( (nsHTMLEditUtils::IsTableElement(curNode) && !nsHTMLEditUtils::IsTable(curNode))
|| nsHTMLEditUtils::IsListItem(curNode) )
{
res = AlignInnerBlocks(curNode, alignType);
if (NS_FAILED(res)) return res;
// clear out curDiv so that we don't put nodes after this one into it
curDiv = 0;
continue;
}
// need to make a div to put things in if we haven't already,
// or if this node doesn't go in div we used earlier.
if (!curDiv || transitionList[i])
{
nsAutoString divType; divType.AssignWithConversion("div");
res = SplitAsNeeded(&divType, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(divType, curParent, offset, getter_AddRefs(curDiv));
if (NS_FAILED(res)) return res;
// set up the alignment on the div
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(curDiv);
nsAutoString attr; attr.AssignWithConversion("align");
res = mEditor->SetAttribute(divElem, attr, *alignType);
if (NS_FAILED(res)) return res;
// curDiv is now the correct thing to put curNode in
}
// tuck the node into the end of the active div
PRUint32 listLen;
res = mEditor->GetLengthOfDOMNode(curDiv, listLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, curDiv, listLen);
if (NS_FAILED(res)) return res;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// AlignInnerBlocks: align inside table cells or list items
//
nsresult
nsHTMLEditRules::AlignInnerBlocks(nsIDOMNode *aNode, const nsString *alignType)
{
if (!aNode || !alignType) return NS_ERROR_NULL_POINTER;
nsresult res;
// gather list of table cells or list items
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsTableCellAndListItemFunctor functor;
nsDOMIterator iter;
res = iter.Init(aNode);
if (NS_FAILED(res)) return res;
res = iter.MakeList(functor, address_of(arrayOfNodes));
if (NS_FAILED(res)) return res;
// now that we have the list, align their contents as requested
PRUint32 listCount;
PRUint32 j;
nsCOMPtr<nsIDOMNode> node;
nsCOMPtr<nsISupports> isupports;
arrayOfNodes->Count(&listCount);
for (j = 0; j < listCount; j++)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
node = do_QueryInterface(isupports);
res = AlignBlockContents(node, alignType);
if (NS_FAILED(res)) return res;
arrayOfNodes->RemoveElementAt(0);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// AlignBlockContents: align contents of a block element
//
nsresult
nsHTMLEditRules::AlignBlockContents(nsIDOMNode *aNode, const nsString *alignType)
{
if (!aNode || !alignType) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr <nsIDOMNode> firstChild, lastChild, divNode;
res = mEditor->GetFirstEditableChild(aNode, address_of(firstChild));
if (NS_FAILED(res)) return res;
res = mEditor->GetLastEditableChild(aNode, address_of(lastChild));
if (NS_FAILED(res)) return res;
if (!firstChild)
{
// this cell has no content, nothing to align
}
else if ((firstChild==lastChild) && nsHTMLEditUtils::IsDiv(firstChild))
{
// the cell already has a div containing all of it's content: just
// act on this div.
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(firstChild);
nsAutoString attr; attr.AssignWithConversion("align");
res = mEditor->SetAttribute(divElem, attr, *alignType);
if (NS_FAILED(res)) return res;
}
else
{
// else we need to put in a div, set the alignment, and toss in all the children
nsAutoString divType; divType.AssignWithConversion("div");
res = mEditor->CreateNode(divType, aNode, 0, getter_AddRefs(divNode));
if (NS_FAILED(res)) return res;
// set up the alignment on the div
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(divNode);
nsAutoString attr; attr.AssignWithConversion("align");
res = mEditor->SetAttribute(divElem, attr, *alignType);
if (NS_FAILED(res)) return res;
// tuck the children into the end of the active div
while (lastChild && (lastChild != divNode))
{
res = mEditor->MoveNode(lastChild, divNode, 0);
if (NS_FAILED(res)) return res;
res = mEditor->GetLastEditableChild(aNode, address_of(lastChild));
if (NS_FAILED(res)) return res;
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetInnerContent: aList and aTbl allow the caller to specify what kind
// of content to "look inside". If aTbl is true, look inside
// any table content, and append the inner content to the
// supplied issupportsarray. Similarly with aList and list content.
//
nsresult
nsHTMLEditRules::GetInnerContent(nsIDOMNode *aNode, nsISupportsArray *outArrayOfNodes, PRBool aList, PRBool aTbl)
{
if (!aNode || !outArrayOfNodes) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> node;
nsCOMPtr<nsISupports> isupports;
nsresult res = mEditor->GetFirstEditableChild(aNode, address_of(node));
while (NS_SUCCEEDED(res) && node)
{
if ( ( aList && (nsHTMLEditUtils::IsList(node) ||
nsHTMLEditUtils::IsListItem(node) ) )
|| ( aTbl && nsHTMLEditUtils::IsTableElement(node) ) )
{
res = GetInnerContent(node, outArrayOfNodes, aList, aTbl);
if (NS_FAILED(res)) return res;
}
else
{
isupports = do_QueryInterface(node);
outArrayOfNodes->AppendElement(isupports);
}
nsCOMPtr<nsIDOMNode> tmp;
res = node->GetNextSibling(getter_AddRefs(tmp));
node = tmp;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// IsFirstNode: Are we the first edittable node in our parent?
//
PRBool
nsHTMLEditRules::IsFirstNode(nsIDOMNode *aNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset, j=0;
nsresult res = nsEditor::GetNodeLocation(aNode, address_of(parent), &offset);
if (NS_FAILED(res))
{
NS_NOTREACHED("failure in nsHTMLEditRules::IsFirstNode");
return PR_FALSE;
}
if (!offset) // easy case, we are first dom child
return PR_TRUE;
if (!parent)
return PR_TRUE;
// ok, so there are earlier children. But are they editable???
nsCOMPtr<nsIDOMNodeList> childList;
nsCOMPtr<nsIDOMNode> child;
res = parent->GetChildNodes(getter_AddRefs(childList));
if (NS_FAILED(res) || !childList)
{
NS_NOTREACHED("failure in nsHTMLEditUtils::IsFirstNode");
return PR_TRUE;
}
while (j < offset)
{
childList->Item(j, getter_AddRefs(child));
if (mEditor->IsEditable(child))
return PR_FALSE;
j++;
}
return PR_TRUE;
}
///////////////////////////////////////////////////////////////////////////
// IsLastNode: Are we the first edittable node in our parent?
//
PRBool
nsHTMLEditRules::IsLastNode(nsIDOMNode *aNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset, j;
PRUint32 numChildren;
nsresult res = nsEditor::GetNodeLocation(aNode, address_of(parent), &offset);
if (NS_FAILED(res))
{
NS_NOTREACHED("failure in nsHTMLEditUtils::IsLastNode");
return PR_FALSE;
}
nsEditor::GetLengthOfDOMNode(parent, numChildren);
if (offset+1 == (PRInt32)numChildren) // easy case, we are last dom child
return PR_TRUE;
if (!parent)
return PR_TRUE;
// ok, so there are later children. But are they editable???
j = offset+1;
nsCOMPtr<nsIDOMNodeList>childList;
nsCOMPtr<nsIDOMNode> child;
res = parent->GetChildNodes(getter_AddRefs(childList));
if (NS_FAILED(res) || !childList)
{
NS_NOTREACHED("failure in nsHTMLEditRules::IsLastNode");
return PR_TRUE;
}
while (j < (PRInt32)numChildren)
{
childList->Item(j, getter_AddRefs(child));
if (mEditor->IsEditable(child))
return PR_FALSE;
j++;
}
return PR_TRUE;
}
///////////////////////////////////////////////////////////////////////////
// AtStartOfBlock: is node/offset at the start of the editable material in this block?
//
PRBool
nsHTMLEditRules::AtStartOfBlock(nsIDOMNode *aNode, PRInt32 aOffset, nsIDOMNode *aBlock)
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(aNode);
if (nodeAsText && aOffset) return PR_FALSE; // there are chars in front of us
nsCOMPtr<nsIDOMNode> priorNode;
nsresult res = mEditor->GetPriorHTMLNode(aNode, aOffset, address_of(priorNode));
if (NS_FAILED(res)) return PR_TRUE;
if (!priorNode) return PR_TRUE;
nsCOMPtr<nsIDOMNode> blockParent = mEditor->GetBlockNodeParent(priorNode);
if (blockParent && (blockParent.get() == aBlock)) return PR_FALSE;
return PR_TRUE;
}
///////////////////////////////////////////////////////////////////////////
// AtEndOfBlock: is node/offset at the end of the editable material in this block?
//
PRBool
nsHTMLEditRules::AtEndOfBlock(nsIDOMNode *aNode, PRInt32 aOffset, nsIDOMNode *aBlock)
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(aNode);
if (nodeAsText)
{
PRUint32 strLength;
nodeAsText->GetLength(&strLength);
if ((PRInt32)strLength > aOffset) return PR_FALSE; // there are chars in after us
}
nsCOMPtr<nsIDOMNode> nextNode;
nsresult res = mEditor->GetNextHTMLNode(aNode, aOffset, address_of(nextNode));
if (NS_FAILED(res)) return PR_TRUE;
if (!nextNode) return PR_TRUE;
nsCOMPtr<nsIDOMNode> blockParent = mEditor->GetBlockNodeParent(nextNode);
if (blockParent && (blockParent.get() == aBlock)) return PR_FALSE;
return PR_TRUE;
}
// not needed at moment - leaving around in case we go back to it.
#if 0
///////////////////////////////////////////////////////////////////////////
// CreateMozDiv: makes a div with type = _moz
//
nsresult
nsHTMLEditRules::CreateMozDiv(nsIDOMNode *inParent, PRInt32 inOffset, nsCOMPtr<nsIDOMNode> *outDiv)
{
if (!inParent || !outDiv) return NS_ERROR_NULL_POINTER;
nsAutoString divType= "div";
*outDiv = nsnull;
nsresult res = mEditor->CreateNode(divType, inParent, inOffset, getter_AddRefs(*outDiv));
if (NS_FAILED(res)) return res;
// give it special moz attr
nsCOMPtr<nsIDOMElement> mozDivElem = do_QueryInterface(*outDiv);
res = mEditor->SetAttribute(mozDivElem, "type", "_moz");
if (NS_FAILED(res)) return res;
res = AddTrailerBR(*outDiv);
return res;
}
#endif
///////////////////////////////////////////////////////////////////////////
// GetPromotedPoint: figure out where a start or end point for a block
// operation really is
nsresult
nsHTMLEditRules::GetPromotedPoint(RulesEndpoint aWhere, nsIDOMNode *aNode, PRInt32 aOffset,
PRInt32 actionID, nsCOMPtr<nsIDOMNode> *outNode, PRInt32 *outOffset)
{
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node = aNode;
nsCOMPtr<nsIDOMNode> parent = aNode;
PRInt32 offset = aOffset;
// defualt values
*outNode = node;
*outOffset = offset;
// we do one thing for InsertText actions, something else entirely for other actions
if (actionID == kInsertText)
{
PRBool isSpace, isNBSP;
nsCOMPtr<nsIDOMNode> temp;
// for insert text or delete actions, we want to look backwards (or forwards, as appropriate)
// for additional whitespace or nbsp's. We may have to act on these later even though
// they are outside of the initial selection. Even if they are in another node!
if (aWhere == kStart)
{
do
{
res = mEditor->IsPrevCharWhitespace(node, offset, &isSpace, &isNBSP, address_of(temp), &offset);
if (NS_FAILED(res)) return res;
if (isSpace || isNBSP) node = temp;
else break;
} while (node);
*outNode = node;
*outOffset = offset;
}
else if (aWhere == kEnd)
{
do
{
res = mEditor->IsNextCharWhitespace(node, offset, &isSpace, &isNBSP, address_of(temp), &offset);
if (NS_FAILED(res)) return res;
if (isSpace || isNBSP) node = temp;
else break;
} while (node);
*outNode = node;
*outOffset = offset;
}
return res;
}
// else not kInsertText. In this case we want to see if we should
// grab any adjacent inline nodes and/or parents and other ancestors
if (aWhere == kStart)
{
// some special casing for text nodes
if (nsEditor::IsTextNode(aNode))
{
res = nsEditor::GetNodeLocation(aNode, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
}
else
{
node = nsEditor::GetChildAt(parent,offset);
}
if (!node) node = parent;
// if this is an inline node,
// back up through any prior inline nodes that
// aren't across a <br> from us.
if (!nsEditor::IsBlockNode(node))
{
nsCOMPtr<nsIDOMNode> block = nsEditor::GetBlockNodeParent(node);
nsCOMPtr<nsIDOMNode> prevNode, prevNodeBlock;
res = mEditor->GetPriorHTMLNode(node, address_of(prevNode));
while (prevNode && NS_SUCCEEDED(res))
{
prevNodeBlock = nsEditor::GetBlockNodeParent(prevNode);
if (prevNodeBlock != block)
break;
if (nsHTMLEditUtils::IsBreak(prevNode))
break;
if (nsEditor::IsBlockNode(prevNode))
break;
node = prevNode;
res = mEditor->GetPriorHTMLNode(node, address_of(prevNode));
}
}
// finding the real start for this point. look up the tree for as long as we are the
// first node in the container, and as long as we haven't hit the body node.
if (!nsHTMLEditUtils::IsBody(node))
{
res = nsEditor::GetNodeLocation(node, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
while ((IsFirstNode(node)) && (!nsHTMLEditUtils::IsBody(parent)))
{
// some cutoffs are here: we don't need to also include them in the aWhere == kEnd case.
// as long as they are in one or the other it will work.
// dont cross table cell boundaries
if (nsHTMLEditUtils::IsTableCell(parent)) break;
// special case for outdent: don't keep looking up
// if we have found a blockquote element to act on
if ((actionID == kOutdent) && nsHTMLEditUtils::IsBlockquote(parent))
break;
node = parent;
res = nsEditor::GetNodeLocation(node, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
}
*outNode = parent;
*outOffset = offset;
return res;
}
}
if (aWhere == kEnd)
{
// some special casing for text nodes
if (nsEditor::IsTextNode(aNode))
{
res = nsEditor::GetNodeLocation(aNode, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
}
else
{
if (offset) offset--; // we want node _before_ offset
node = nsEditor::GetChildAt(parent,offset);
}
if (!node) node = parent;
// if this is an inline node,
// look ahead through any further inline nodes that
// aren't across a <br> from us, and that are enclosed in the same block.
if (!nsEditor::IsBlockNode(node))
{
nsCOMPtr<nsIDOMNode> block = nsEditor::GetBlockNodeParent(node);
nsCOMPtr<nsIDOMNode> nextNode, nextNodeBlock;
res = mEditor->GetNextHTMLNode(node, address_of(nextNode));
while (nextNode && NS_SUCCEEDED(res))
{
nextNodeBlock = nsEditor::GetBlockNodeParent(nextNode);
if (nextNodeBlock != block)
break;
if (nsHTMLEditUtils::IsBreak(nextNode))
{
node = nextNode;
break;
}
if (nsEditor::IsBlockNode(nextNode))
break;
node = nextNode;
res = mEditor->GetNextHTMLNode(node, address_of(nextNode));
}
}
// finding the real end for this point. look up the tree for as long as we are the
// last node in the container, and as long as we haven't hit the body node.
if (!nsHTMLEditUtils::IsBody(node))
{
res = nsEditor::GetNodeLocation(node, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
while ((IsLastNode(node)) && (!nsHTMLEditUtils::IsBody(parent)))
{
node = parent;
res = nsEditor::GetNodeLocation(node, address_of(parent), &offset);
if (NS_FAILED(res)) return res;
}
*outNode = parent;
offset++; // add one since this in an endpoint - want to be AFTER node.
*outOffset = offset;
return res;
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetPromotedRanges: run all the selection range endpoint through
// GetPromotedPoint()
//
nsresult
nsHTMLEditRules::GetPromotedRanges(nsISelection *inSelection,
nsCOMPtr<nsISupportsArray> *outArrayOfRanges,
PRInt32 inOperationType)
{
if (!inSelection || !outArrayOfRanges) return NS_ERROR_NULL_POINTER;
nsresult res = NS_NewISupportsArray(getter_AddRefs(*outArrayOfRanges));
if (NS_FAILED(res)) return res;
PRInt32 rangeCount;
res = inSelection->GetRangeCount(&rangeCount);
if (NS_FAILED(res)) return res;
PRInt32 i;
nsCOMPtr<nsIDOMRange> selectionRange;
nsCOMPtr<nsIDOMRange> opRange;
for (i = 0; i < rangeCount; i++)
{
res = inSelection->GetRangeAt(i, getter_AddRefs(selectionRange));
if (NS_FAILED(res)) return res;
// clone range so we dont muck with actual selection ranges
res = selectionRange->CloneRange(getter_AddRefs(opRange));
if (NS_FAILED(res)) return res;
// make a new adjusted range to represent the appropriate block content.
// The basic idea is to push out the range endpoints
// to truly enclose the blocks that we will affect.
// This call alters opRange.
res = PromoteRange(opRange, inOperationType);
if (NS_FAILED(res)) return res;
// stuff new opRange into nsISupportsArray
nsCOMPtr<nsISupports> isupports = do_QueryInterface(opRange);
(*outArrayOfRanges)->AppendElement(isupports);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// PromoteRange: expand a range to include any parents for which all
// editable children are already in range.
//
nsresult
nsHTMLEditRules::PromoteRange(nsIDOMRange *inRange,
PRInt32 inOperationType)
{
if (!inRange) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode;
PRInt32 startOffset, endOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = inRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = inRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = inRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
// make a new adjusted range to represent the appropriate block content.
// this is tricky. the basic idea is to push out the range endpoints
// to truly enclose the blocks that we will affect
nsCOMPtr<nsIDOMNode> opStartNode;
nsCOMPtr<nsIDOMNode> opEndNode;
PRInt32 opStartOffset, opEndOffset;
nsCOMPtr<nsIDOMRange> opRange;
res = GetPromotedPoint( kStart, startNode, startOffset, inOperationType, address_of(opStartNode), &opStartOffset);
if (NS_FAILED(res)) return res;
res = GetPromotedPoint( kEnd, endNode, endOffset, inOperationType, address_of(opEndNode), &opEndOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetStart(opStartNode, opStartOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetEnd(opEndNode, opEndOffset);
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetNodesForOperation: run through the ranges in the array and construct
// a new array of nodes to be acted on.
//
nsresult
nsHTMLEditRules::GetNodesForOperation(nsISupportsArray *inArrayOfRanges,
nsCOMPtr<nsISupportsArray> *outArrayOfNodes,
PRInt32 inOperationType,
PRBool aDontTouchContent)
{
if (!inArrayOfRanges || !outArrayOfNodes) return NS_ERROR_NULL_POINTER;
// make a array
nsresult res = NS_NewISupportsArray(getter_AddRefs(*outArrayOfNodes));
if (NS_FAILED(res)) return res;
PRUint32 rangeCount;
res = inArrayOfRanges->Count(&rangeCount);
if (NS_FAILED(res)) return res;
PRInt32 i;
nsCOMPtr<nsIDOMRange> opRange;
nsCOMPtr<nsISupports> isupports;
// bust up any inlines that cross our range endpoints,
// but only if we are allowed to touch content.
if (!aDontTouchContent)
{
nsVoidArray rangeItemArray;
// first register ranges for special editor gravity
for (i = 0; i < (PRInt32)rangeCount; i++)
{
isupports = (dont_AddRef)(inArrayOfRanges->ElementAt(0));
opRange = do_QueryInterface(isupports);
nsRangeStore *item = new nsRangeStore();
if (!item) return NS_ERROR_NULL_POINTER;
item->StoreRange(opRange);
mEditor->mRangeUpdater.RegisterRangeItem(item);
rangeItemArray.AppendElement((void*)item);
inArrayOfRanges->RemoveElementAt(0);
}
// now bust up inlines
for (i = (PRInt32)rangeCount-1; i >= 0; i--)
{
nsRangeStore *item = (nsRangeStore*)rangeItemArray.ElementAt(i);
res = BustUpInlinesAtRangeEndpoints(*item);
if (NS_FAILED(res)) return res;
}
// then unregister the ranges
for (i = 0; i < (PRInt32)rangeCount; i++)
{
nsRangeStore *item = (nsRangeStore*)rangeItemArray.ElementAt(0);
if (!item) return NS_ERROR_NULL_POINTER;
rangeItemArray.RemoveElementAt(0);
mEditor->mRangeUpdater.DropRangeItem(item);
res = item->GetRange(address_of(opRange));
if (NS_FAILED(res)) return res;
delete item;
isupports = do_QueryInterface(opRange);
inArrayOfRanges->AppendElement(isupports);
}
}
// gather up a list of all the nodes
for (i = 0; i < (PRInt32)rangeCount; i++)
{
isupports = (dont_AddRef)(inArrayOfRanges->ElementAt(i));
opRange = do_QueryInterface(isupports);
nsTrivialFunctor functor;
nsDOMSubtreeIterator iter;
res = iter.Init(opRange);
if (NS_FAILED(res)) return res;
res = iter.AppendList(functor, *outArrayOfNodes);
if (NS_FAILED(res)) return res;
}
// certain operations should not act on li's and td's, but rather inside
// them. alter the list as needed
if ( (inOperationType == kMakeBasicBlock) ||
(inOperationType == kAlign) )
{
PRUint32 listCount;
(*outArrayOfNodes)->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
isupports = (dont_AddRef)((*outArrayOfNodes)->ElementAt(i));
nsCOMPtr<nsIDOMNode> node( do_QueryInterface(isupports) );
if ( (nsHTMLEditUtils::IsTableElement(node) && !nsHTMLEditUtils::IsTable(node))
|| (nsHTMLEditUtils::IsListItem(node)))
{
(*outArrayOfNodes)->RemoveElementAt(i);
res = GetInnerContent(node, *outArrayOfNodes);
if (NS_FAILED(res)) return res;
}
}
}
// indent/outdent already do something special for list items, but
// we still need to make sure we dont act on table elements
else if ( (inOperationType == kOutdent) ||
(inOperationType == kIndent) )
{
PRUint32 listCount;
(*outArrayOfNodes)->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
isupports = (dont_AddRef)((*outArrayOfNodes)->ElementAt(i));
nsCOMPtr<nsIDOMNode> node( do_QueryInterface(isupports) );
if ( (nsHTMLEditUtils::IsTableElement(node) && !nsHTMLEditUtils::IsTable(node)) )
{
(*outArrayOfNodes)->RemoveElementAt(i);
res = GetInnerContent(node, *outArrayOfNodes);
if (NS_FAILED(res)) return res;
}
}
}
// post process the list to break up inline containers that contain br's.
// but only for operations that might care, like making lists or para's...
if ( (inOperationType == kMakeBasicBlock) ||
(inOperationType == kMakeList) ||
(inOperationType == kAlign) ||
(inOperationType == kIndent) ||
(inOperationType == kOutdent) )
{
PRUint32 listCount;
(*outArrayOfNodes)->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
isupports = (dont_AddRef)((*outArrayOfNodes)->ElementAt(i));
nsCOMPtr<nsIDOMNode> node( do_QueryInterface(isupports) );
if (!aDontTouchContent && mEditor->IsInlineNode(node)
&& mEditor->IsContainer(node) && !mEditor->IsTextNode(node))
{
nsCOMPtr<nsISupportsArray> arrayOfInlines;
res = BustUpInlinesAtBRs(node, address_of(arrayOfInlines));
if (NS_FAILED(res)) return res;
// put these nodes in outArrayOfNodes, replacing the current node
(*outArrayOfNodes)->RemoveElementAt((PRUint32)i);
// i sure wish nsISupportsArray had an IsEmpty() and DeleteLastElement()
// calls. For that matter, if I could just insert one nsISupportsArray
// into another at a given position, that would do everything I need here.
PRUint32 iCount;
arrayOfInlines->Count(&iCount);
while (iCount)
{
iCount--;
isupports = (dont_AddRef)(arrayOfInlines->ElementAt(iCount));
(*outArrayOfNodes)->InsertElementAt(isupports, i);
}
}
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetChildNodesForOperation:
//
nsresult
nsHTMLEditRules::GetChildNodesForOperation(nsIDOMNode *inNode,
nsCOMPtr<nsISupportsArray> *outArrayOfNodes)
{
if (!inNode || !outArrayOfNodes) return NS_ERROR_NULL_POINTER;
nsresult res = NS_NewISupportsArray(getter_AddRefs(*outArrayOfNodes));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNodeList> childNodes;
res = inNode->GetChildNodes(getter_AddRefs(childNodes));
if (NS_FAILED(res)) return res;
if (!childNodes) return NS_ERROR_NULL_POINTER;
PRUint32 childCount;
res = childNodes->GetLength(&childCount);
if (NS_FAILED(res)) return res;
PRUint32 i;
nsCOMPtr<nsIDOMNode> node;
nsCOMPtr<nsISupports> isupports;
for (i = 0; i < childCount; i++)
{
res = childNodes->Item( i, getter_AddRefs(node));
if (!node) return NS_ERROR_FAILURE;
isupports = do_QueryInterface(node);
(*outArrayOfNodes)->AppendElement(isupports);
if (NS_FAILED(res)) return res;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetListActionNodes:
//
nsresult
nsHTMLEditRules::GetListActionNodes(nsCOMPtr<nsISupportsArray> *outArrayOfNodes,
PRBool aEntireList,
PRBool aDontTouchContent)
{
if (!outArrayOfNodes) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsISelection>selection;
res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
if (!selPriv)
return NS_ERROR_FAILURE;
// added this in so that ui code can ask to change an entire list, even if selection
// is only in part of it. used by list item dialog.
if (aEntireList)
{
res = NS_NewISupportsArray(getter_AddRefs(*outArrayOfNodes));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_UNEXPECTED;
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
{
nsCOMPtr<nsISupports> currentItem;
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_UNEXPECTED;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode> commonParent, parent, tmp;
range->GetCommonAncestorContainer(getter_AddRefs(commonParent));
if (commonParent)
{
parent = commonParent;
while (parent)
{
if (nsHTMLEditUtils::IsList(parent))
{
nsCOMPtr<nsISupports> isupports = do_QueryInterface(parent);
(*outArrayOfNodes)->AppendElement(isupports);
break;
}
parent->GetParentNode(getter_AddRefs(tmp));
parent = tmp;
}
}
}
// if we didn't find any nodes this way, then try the normal way. perhaps the
// selection spans multiple lists but with no common list parent.
if (*outArrayOfNodes)
{
PRUint32 nodeCount;
(*outArrayOfNodes)->Count(&nodeCount);
if (nodeCount) return NS_OK;
}
}
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(selection, address_of(arrayOfRanges), kMakeList);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
res = GetNodesForOperation(arrayOfRanges, outArrayOfNodes, kMakeList, aDontTouchContent);
if (NS_FAILED(res)) return res;
// pre process our list of nodes...
PRUint32 listCount;
PRInt32 i;
(*outArrayOfNodes)->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)((*outArrayOfNodes)->ElementAt(i));
nsCOMPtr<nsIDOMNode> testNode( do_QueryInterface(isupports ) );
// Remove all non-editable nodes. Leave them be.
if (!mEditor->IsEditable(testNode))
{
(*outArrayOfNodes)->RemoveElementAt(i);
}
// scan for table elements. If we find table elements other than table,
// replace it with a list of any editable non-table content.
if (nsHTMLEditUtils::IsTableElement(testNode) && !nsHTMLEditUtils::IsTable(testNode))
{
(*outArrayOfNodes)->RemoveElementAt(i);
res = GetInnerContent(testNode, *outArrayOfNodes, PR_FALSE);
if (NS_FAILED(res)) return res;
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetDefinitionListItemTypes:
//
nsresult
nsHTMLEditRules::GetDefinitionListItemTypes(nsIDOMNode *aNode, PRBool &aDT, PRBool &aDD)
{
if (!aNode) return NS_ERROR_NULL_POINTER;
aDT = aDD = PR_FALSE;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> child, temp;
res = aNode->GetFirstChild(getter_AddRefs(child));
while (child && NS_SUCCEEDED(res))
{
if (mEditor->NodeIsType(child,nsIEditProperty::dt)) aDT = PR_TRUE;
else if (mEditor->NodeIsType(child,nsIEditProperty::dd)) aDD = PR_TRUE;
res = child->GetNextSibling(getter_AddRefs(temp));
child = temp;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetParagraphFormatNodes:
//
nsresult
nsHTMLEditRules::GetParagraphFormatNodes(nsCOMPtr<nsISupportsArray> *outArrayOfNodes,
PRBool aDontTouchContent)
{
if (!outArrayOfNodes) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelection>selection;
nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsISupportsArray> arrayOfRanges;
res = GetPromotedRanges(selection, address_of(arrayOfRanges), kMakeList);
if (NS_FAILED(res)) return res;
// use these ranges to contruct a list of nodes to act on.
res = GetNodesForOperation(arrayOfRanges, outArrayOfNodes, kMakeBasicBlock, aDontTouchContent);
if (NS_FAILED(res)) return res;
// pre process our list of nodes...
PRUint32 listCount;
PRInt32 i;
(*outArrayOfNodes)->Count(&listCount);
for (i=(PRInt32)listCount-1; i>=0; i--)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)((*outArrayOfNodes)->ElementAt(i));
nsCOMPtr<nsIDOMNode> testNode( do_QueryInterface(isupports ) );
// Remove all non-editable nodes. Leave them be.
if (!mEditor->IsEditable(testNode))
{
(*outArrayOfNodes)->RemoveElementAt(i);
}
// scan for table elements. If we find table elements other than table,
// replace it with a list of any editable non-table content. Ditto for list elements.
if (nsHTMLEditUtils::IsTableElement(testNode) ||
nsHTMLEditUtils::IsList(testNode) ||
nsHTMLEditUtils::IsListItem(testNode) )
{
(*outArrayOfNodes)->RemoveElementAt(i);
res = GetInnerContent(testNode, *outArrayOfNodes);
if (NS_FAILED(res)) return res;
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// BustUpInlinesAtRangeEndpoints:
//
nsresult
nsHTMLEditRules::BustUpInlinesAtRangeEndpoints(nsRangeStore &item)
{
nsresult res = NS_OK;
PRBool isCollapsed = ((item.startNode == item.endNode) && (item.startOffset == item.endOffset));
nsCOMPtr<nsIDOMNode> endInline = GetHighestInlineParent(item.endNode);
// if we have inline parents above range endpoints, split them
if (endInline && !isCollapsed)
{
nsCOMPtr<nsIDOMNode> resultEndNode;
PRInt32 resultEndOffset;
item.endNode->GetParentNode(getter_AddRefs(resultEndNode));
res = mEditor->SplitNodeDeep(endInline, item.endNode, item.endOffset,
&resultEndOffset, PR_TRUE);
if (NS_FAILED(res)) return res;
// reset range
item.endNode = resultEndNode; item.endOffset = resultEndOffset;
}
nsCOMPtr<nsIDOMNode> startInline = GetHighestInlineParent(item.startNode);
if (startInline)
{
nsCOMPtr<nsIDOMNode> resultStartNode;
PRInt32 resultStartOffset;
item.startNode->GetParentNode(getter_AddRefs(resultStartNode));
res = mEditor->SplitNodeDeep(startInline, item.startNode, item.startOffset,
&resultStartOffset, PR_TRUE);
if (NS_FAILED(res)) return res;
// reset range
item.startNode = resultStartNode; item.startOffset = resultStartOffset;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// BustUpInlinesAtBRs:
//
nsresult
nsHTMLEditRules::BustUpInlinesAtBRs(nsIDOMNode *inNode,
nsCOMPtr<nsISupportsArray> *outArrayOfNodes)
{
if (!inNode || !outArrayOfNodes) return NS_ERROR_NULL_POINTER;
nsresult res = NS_NewISupportsArray(getter_AddRefs(*outArrayOfNodes));
if (NS_FAILED(res)) return res;
// first step is to build up a list of all the break nodes inside
// the inline container.
nsCOMPtr<nsISupportsArray> arrayOfBreaks;
nsBRNodeFunctor functor;
nsDOMIterator iter;
res = iter.Init(inNode);
if (NS_FAILED(res)) return res;
res = iter.MakeList(functor, address_of(arrayOfBreaks));
if (NS_FAILED(res)) return res;
// if there aren't any breaks, just put inNode itself in the array
nsCOMPtr<nsISupports> isupports;
PRUint32 listCount;
arrayOfBreaks->Count(&listCount);
if (!listCount)
{
isupports = do_QueryInterface(inNode);
(*outArrayOfNodes)->AppendElement(isupports);
if (NS_FAILED(res)) return res;
}
else
{
// else we need to bust up inNode along all the breaks
nsCOMPtr<nsIDOMNode> breakNode;
nsCOMPtr<nsIDOMNode> inlineParentNode;
nsCOMPtr<nsIDOMNode> leftNode;
nsCOMPtr<nsIDOMNode> rightNode;
nsCOMPtr<nsIDOMNode> splitDeepNode = inNode;
nsCOMPtr<nsIDOMNode> splitParentNode;
PRInt32 splitOffset, resultOffset, i;
inNode->GetParentNode(getter_AddRefs(inlineParentNode));
for (i=0; i< (PRInt32)listCount; i++)
{
isupports = (dont_AddRef)(arrayOfBreaks->ElementAt(i));
breakNode = do_QueryInterface(isupports);
if (!breakNode) return NS_ERROR_NULL_POINTER;
if (!splitDeepNode) return NS_ERROR_NULL_POINTER;
res = nsEditor::GetNodeLocation(breakNode, address_of(splitParentNode), &splitOffset);
if (NS_FAILED(res)) return res;
res = mEditor->SplitNodeDeep(splitDeepNode, splitParentNode, splitOffset,
&resultOffset, PR_FALSE, address_of(leftNode), address_of(rightNode));
if (NS_FAILED(res)) return res;
// put left node in node list
if (leftNode)
{
// might not be a left node. a break might have been at the very
// beginning of inline container, in which case splitnodedeep
// would not actually split anything
isupports = do_QueryInterface(leftNode);
(*outArrayOfNodes)->AppendElement(isupports);
if (NS_FAILED(res)) return res;
}
// move break outside of container and also put in node list
res = mEditor->MoveNode(breakNode, inlineParentNode, resultOffset);
if (NS_FAILED(res)) return res;
isupports = do_QueryInterface(breakNode);
(*outArrayOfNodes)->AppendElement(isupports);
if (NS_FAILED(res)) return res;
// now rightNode becomes the new node to split
splitDeepNode = rightNode;
}
// now tack on remaining rightNode, if any, to the list
if (rightNode)
{
isupports = do_QueryInterface(rightNode);
(*outArrayOfNodes)->AppendElement(isupports);
if (NS_FAILED(res)) return res;
}
}
return res;
}
nsCOMPtr<nsIDOMNode>
nsHTMLEditRules::GetHighestInlineParent(nsIDOMNode* aNode)
{
if (!aNode) return nsnull;
if (nsEditor::IsBlockNode(aNode)) return nsnull;
nsCOMPtr<nsIDOMNode> inlineNode, node=aNode;
while (node && mEditor->IsInlineNode(node))
{
inlineNode = node;
inlineNode->GetParentNode(getter_AddRefs(node));
}
return inlineNode;
}
///////////////////////////////////////////////////////////////////////////
// MakeTransitionList: detect all the transitions in the array, where a
// transition means that adjacent nodes in the array
// don't have the same parent.
//
nsresult
nsHTMLEditRules::MakeTransitionList(nsISupportsArray *inArrayOfNodes,
nsVoidArray *inTransitionArray)
{
if (!inArrayOfNodes || !inTransitionArray) return NS_ERROR_NULL_POINTER;
PRUint32 listCount;
PRUint32 i;
inArrayOfNodes->Count(&listCount);
nsVoidArray transitionList;
nsCOMPtr<nsIDOMNode> prevElementParent;
nsCOMPtr<nsIDOMNode> curElementParent;
for (i=0; i<listCount; i++)
{
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(inArrayOfNodes->ElementAt(i));
nsCOMPtr<nsIDOMNode> transNode( do_QueryInterface(isupports ) );
transNode->GetParentNode(getter_AddRefs(curElementParent));
if (curElementParent != prevElementParent)
{
// different parents, or seperated by <br>: transition point
inTransitionArray->InsertElementAt((void*)PR_TRUE,i);
}
else
{
// same parents: these nodes grew up together
inTransitionArray->InsertElementAt((void*)PR_FALSE,i);
}
prevElementParent = curElementParent;
}
return NS_OK;
}
/********************************************************
* main implementation methods
********************************************************/
///////////////////////////////////////////////////////////////////////////
// InsertTab: top level logic for determining how to insert a tab
//
nsresult
nsHTMLEditRules::InsertTab(nsISelection *aSelection,
nsString *outString)
{
nsCOMPtr<nsIDOMNode> parentNode;
PRInt32 offset;
PRBool isPRE;
nsresult res = mEditor->GetStartNodeAndOffset(aSelection, address_of(parentNode), &offset);
if (NS_FAILED(res)) return res;
if (!parentNode) return NS_ERROR_FAILURE;
res = mEditor->IsPreformatted(parentNode, &isPRE);
if (NS_FAILED(res)) return res;
if (isPRE)
{
outString->AssignWithConversion('\t');
}
else
{
// number of spaces should be a pref?
// note that we dont play around with nbsps here anymore.
// let the AfterEdit whitespace cleanup code handle it.
outString->AssignWithConversion(" ");
}
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInHeader: do the right thing for returns pressed in headers
//
nsresult
nsHTMLEditRules::ReturnInHeader(nsISelection *aSelection,
nsIDOMNode *aHeader,
nsIDOMNode *aNode,
PRInt32 aOffset)
{
if (!aSelection || !aHeader || !aNode) return NS_ERROR_NULL_POINTER;
// remeber where the header is
nsCOMPtr<nsIDOMNode> headerParent;
PRInt32 offset;
nsresult res = nsEditor::GetNodeLocation(aHeader, address_of(headerParent), &offset);
if (NS_FAILED(res)) return res;
// split the header
PRInt32 newOffset;
res = mEditor->SplitNodeDeep( aHeader, aNode, aOffset, &newOffset);
if (NS_FAILED(res)) return res;
// if the leftand heading is empty, put a mozbr in it
nsCOMPtr<nsIDOMNode> prevItem;
mEditor->GetPriorHTMLSibling(aHeader, address_of(prevItem));
if (prevItem && nsHTMLEditUtils::IsHeader(prevItem))
{
PRBool bIsEmptyNode;
res = mEditor->IsEmptyNode(prevItem, &bIsEmptyNode);
if (NS_FAILED(res)) return res;
if (bIsEmptyNode)
{
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(prevItem, 0, address_of(brNode));
if (NS_FAILED(res)) return res;
}
}
// if the new (righthand) header node is empty, delete it
PRBool isEmpty;
res = IsEmptyBlock(aHeader, &isEmpty, PR_TRUE);
if (NS_FAILED(res)) return res;
if (isEmpty)
{
res = mEditor->DeleteNode(aHeader);
if (NS_FAILED(res)) return res;
// layout tells the caret to blink in a weird place
// if we dont place a break after the header.
nsCOMPtr<nsIDOMNode> sibling;
res = mEditor->GetNextHTMLSibling(headerParent, offset+1, address_of(sibling));
if (NS_FAILED(res)) return res;
if (!sibling || !nsHTMLEditUtils::IsBreak(sibling))
{
res = CreateMozBR(headerParent, offset+1, address_of(sibling));
if (NS_FAILED(res)) return res;
}
res = nsEditor::GetNodeLocation(sibling, address_of(headerParent), &offset);
if (NS_FAILED(res)) return res;
// put selection after break
res = aSelection->Collapse(headerParent,offset+1);
}
else
{
// put selection at front of righthand heading
res = aSelection->Collapse(aHeader,0);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInParagraph: do the right thing for returns pressed in paragraphs
//
nsresult
nsHTMLEditRules::ReturnInParagraph(nsISelection *aSelection,
nsIDOMNode *aPara,
nsIDOMNode *aNode,
PRInt32 aOffset,
PRBool *aCancel,
PRBool *aHandled)
{
if (!aSelection || !aPara || !aNode || !aCancel || !aHandled)
{ return NS_ERROR_NULL_POINTER; }
*aCancel = PR_FALSE;
*aHandled = PR_FALSE;
nsCOMPtr<nsIDOMNode> sibling;
nsresult res = NS_OK;
// easy case, in a text node:
if (mEditor->IsTextNode(aNode))
{
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(aNode);
PRUint32 strLength;
res = textNode->GetLength(&strLength);
if (NS_FAILED(res)) return res;
// at beginning of text node?
if (!aOffset)
{
// is there a BR prior to it?
mEditor->GetPriorHTMLSibling(aNode, address_of(sibling));
if (!sibling)
{
// no previous sib, so
// just fall out to default of inserting a BR
return res;
}
if (nsHTMLEditUtils::IsBreak(sibling)
&& !nsHTMLEditUtils::HasMozAttr(sibling))
{
PRInt32 newOffset;
*aCancel = PR_TRUE;
// split the paragraph
res = mEditor->SplitNodeDeep( aPara, aNode, aOffset, &newOffset);
if (NS_FAILED(res)) return res;
// get rid of the break
res = mEditor->DeleteNode(sibling);
if (NS_FAILED(res)) return res;
// check both halves of para to see if we need mozBR
res = InsertMozBRIfNeeded(aPara);
if (NS_FAILED(res)) return res;
res = mEditor->GetPriorHTMLSibling(aPara, address_of(sibling));
if (NS_FAILED(res)) return res;
if (sibling && nsHTMLEditUtils::IsParagraph(sibling))
{
res = InsertMozBRIfNeeded(sibling);
if (NS_FAILED(res)) return res;
}
// position selection inside right hand para
res = aSelection->Collapse(aPara,0);
}
// else just fall out to default of inserting a BR
return res;
}
// at end of text node?
if (aOffset == (PRInt32)strLength)
{
// is there a BR after to it?
res = mEditor->GetNextHTMLSibling(aNode, address_of(sibling));
if (!sibling)
{
// no next sib, so
// just fall out to default of inserting a BR
return res;
}
if (nsHTMLEditUtils::IsBreak(sibling)
&& !nsHTMLEditUtils::HasMozAttr(sibling))
{
PRInt32 newOffset;
*aCancel = PR_TRUE;
// split the paragraph
res = mEditor->SplitNodeDeep(aPara, aNode, aOffset, &newOffset);
if (NS_FAILED(res)) return res;
// get rid of the break
res = mEditor->DeleteNode(sibling);
if (NS_FAILED(res)) return res;
// position selection inside right hand para
res = aSelection->Collapse(aPara,0);
}
// else just fall out to default of inserting a BR
return res;
}
// inside text node
// just fall out to default of inserting a BR
return res;
}
else
{
// not in a text node.
// is there a BR prior to it?
nsCOMPtr<nsIDOMNode> nearNode;
res = mEditor->GetPriorHTMLNode(aNode, aOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (!nearNode || !nsHTMLEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::HasMozAttr(nearNode))
{
// is there a BR after to it?
res = mEditor->GetNextHTMLNode(aNode, aOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (!nearNode || !nsHTMLEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::HasMozAttr(nearNode))
{
// just fall out to default of inserting a BR
return res;
}
}
// else remove sibling br and split para
PRInt32 newOffset;
*aCancel = PR_TRUE;
// split the paragraph
res = mEditor->SplitNodeDeep( aPara, aNode, aOffset, &newOffset);
if (NS_FAILED(res)) return res;
// get rid of the break
res = mEditor->DeleteNode(nearNode);
if (NS_FAILED(res)) return res;
// selection to beginning of right hand para
aSelection->Collapse(aPara,0);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInListItem: do the right thing for returns pressed in list items
//
nsresult
nsHTMLEditRules::ReturnInListItem(nsISelection *aSelection,
nsIDOMNode *aListItem,
nsIDOMNode *aNode,
PRInt32 aOffset)
{
if (!aSelection || !aListItem || !aNode) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> listitem;
// sanity check
NS_PRECONDITION(PR_TRUE == nsHTMLEditUtils::IsListItem(aListItem),
"expected a list item and didnt get one");
// if we are in an empty listitem, then we want to pop up out of the list
PRBool isEmpty;
res = IsEmptyBlock(aListItem, &isEmpty, PR_TRUE, PR_FALSE);
if (NS_FAILED(res)) return res;
if (isEmpty && mReturnInEmptyLIKillsList) // but only if prefs says it's ok
{
nsCOMPtr<nsIDOMNode> list, listparent;
PRInt32 offset, itemOffset;
res = nsEditor::GetNodeLocation(aListItem, address_of(list), &itemOffset);
if (NS_FAILED(res)) return res;
res = nsEditor::GetNodeLocation(list, address_of(listparent), &offset);
if (NS_FAILED(res)) return res;
// are we the last list item in the list?
PRBool bIsLast;
res = mEditor->IsLastEditableChild(aListItem, &bIsLast);
if (NS_FAILED(res)) return res;
if (!bIsLast)
{
// we need to split the list!
nsCOMPtr<nsIDOMNode> tempNode;
res = mEditor->SplitNode(list, itemOffset, getter_AddRefs(tempNode));
if (NS_FAILED(res)) return res;
}
// are we in a sublist?
if (nsHTMLEditUtils::IsList(listparent)) //in a sublist
{
// if so, move this list item out of this list and into the grandparent list
res = mEditor->MoveNode(aListItem,listparent,offset+1);
if (NS_FAILED(res)) return res;
res = aSelection->Collapse(aListItem,0);
}
else
{
// otherwise kill this listitem
res = mEditor->DeleteNode(aListItem);
if (NS_FAILED(res)) return res;
// time to insert a break
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(listparent, offset+1, address_of(brNode));
if (NS_FAILED(res)) return res;
// set selection to before the moz br
selPriv->SetInterlinePosition(PR_TRUE);
res = aSelection->Collapse(listparent,offset+1);
}
return res;
}
// else we want a new list item at the same list level
PRInt32 newOffset;
res = mEditor->SplitNodeDeep( aListItem, aNode, aOffset, &newOffset);
if (NS_FAILED(res)) return res;
// hack: until I can change the damaged doc range code back to being
// extra inclusive, I have to manually detect certain list items that
// may be left empty.
nsCOMPtr<nsIDOMNode> prevItem;
mEditor->GetPriorHTMLSibling(aListItem, address_of(prevItem));
if (prevItem && nsHTMLEditUtils::IsListItem(prevItem))
{
PRBool bIsEmptyNode;
res = mEditor->IsEmptyNode(prevItem, &bIsEmptyNode);
if (NS_FAILED(res)) return res;
if (bIsEmptyNode)
{
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(prevItem, 0, address_of(brNode));
if (NS_FAILED(res)) return res;
}
}
res = aSelection->Collapse(aListItem,0);
return res;
}
///////////////////////////////////////////////////////////////////////////
// MakeBlockquote: put the list of nodes into one or more blockquotes.
//
nsresult
nsHTMLEditRules::MakeBlockquote(nsISupportsArray *arrayOfNodes)
{
// the idea here is to put the nodes into a minimal number of
// blockquotes. When the user blockquotes something, they expect
// one blockquote. That may not be possible (for instance, if they
// have two table cells selected, you need two blockquotes inside the cells).
if (!arrayOfNodes) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> curNode, curParent, curBlock, newBlock;
PRInt32 offset;
PRUint32 listCount;
arrayOfNodes->Count(&listCount);
nsCOMPtr<nsIDOMNode> prevParent;
PRUint32 i;
for (i=0; i<listCount; i++)
{
// get the node to act on, and it's location
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
curNode = do_QueryInterface(isupports);
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
// if the node is a table element or list item, dive inside
if ( (nsHTMLEditUtils::IsTableElement(curNode) && !(nsHTMLEditUtils::IsTable(curNode))) ||
nsHTMLEditUtils::IsListItem(curNode) )
{
curBlock = 0; // forget any previous block
// recursion time
nsCOMPtr<nsISupportsArray> childArray;
res = GetChildNodesForOperation(curNode, address_of(childArray));
if (NS_FAILED(res)) return res;
res = MakeBlockquote(childArray);
if (NS_FAILED(res)) return res;
}
// if the node has different parent than previous node,
// further nodes in a new parent
if (prevParent)
{
nsCOMPtr<nsIDOMNode> temp;
curNode->GetParentNode(getter_AddRefs(temp));
if (temp != prevParent)
{
curBlock = 0; // forget any previous blockquote node we were using
prevParent = temp;
}
}
else
{
curNode->GetParentNode(getter_AddRefs(prevParent));
}
// if no curBlock, make one
if (!curBlock)
{
nsAutoString quoteType; quoteType.AssignWithConversion("blockquote");
res = SplitAsNeeded(&quoteType, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(quoteType, curParent, offset, getter_AddRefs(curBlock));
if (NS_FAILED(res)) return res;
}
PRUint32 blockLen;
res = mEditor->GetLengthOfDOMNode(curBlock, blockLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, curBlock, blockLen);
if (NS_FAILED(res)) return res;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ApplyBlockStyle: do whatever it takes to make the list of nodes into
// one or more blocks of type blockTag.
//
nsresult
nsHTMLEditRules::ApplyBlockStyle(nsISupportsArray *arrayOfNodes, const nsString *aBlockTag)
{
// intent of this routine is to be used for converting to/from
// headers, paragraphs, pre, and address. Those blocks
// that pretty much just contain inline things...
if (!arrayOfNodes || !aBlockTag) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> curNode, curParent, curBlock, newBlock;
PRInt32 offset;
PRUint32 listCount;
PRBool bNoParent = PR_FALSE;
// we special case an empty tag name to mean "remove block parents".
// This is used for the "normal" paragraph style in mail-compose
if (aBlockTag->IsEmpty() || aBlockTag->EqualsWithConversion("normal")) bNoParent = PR_TRUE;
arrayOfNodes->Count(&listCount);
PRUint32 i;
for (i=0; i<listCount; i++)
{
// get the node to act on, and it's location
nsCOMPtr<nsISupports> isupports = (dont_AddRef)(arrayOfNodes->ElementAt(i));
curNode = do_QueryInterface(isupports);
res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
nsAutoString curNodeTag;
nsEditor::GetTagString(curNode, curNodeTag);
curNodeTag.ToLowerCase();
// is it already the right kind of block?
if (!bNoParent && curNodeTag == *aBlockTag)
{
curBlock = 0; // forget any previous block used for previous inline nodes
continue; // do nothing to this block
}
// if curNode is a mozdiv, p, header, address, or pre, replace
// it with a new block of correct type.
// xxx floppy moose: pre cant hold everything the others can
if (nsHTMLEditUtils::IsMozDiv(curNode) ||
(curNodeTag.EqualsWithConversion("pre")) ||
(curNodeTag.EqualsWithConversion("p")) ||
(curNodeTag.EqualsWithConversion("h1")) ||
(curNodeTag.EqualsWithConversion("h2")) ||
(curNodeTag.EqualsWithConversion("h3")) ||
(curNodeTag.EqualsWithConversion("h4")) ||
(curNodeTag.EqualsWithConversion("h5")) ||
(curNodeTag.EqualsWithConversion("h6")) ||
(curNodeTag.EqualsWithConversion("address")))
{
curBlock = 0; // forget any previous block used for previous inline nodes
if (bNoParent)
{
// make sure we have a normal br at end of block
res = AddTerminatingBR(curNode);
if (NS_FAILED(res)) return res;
res = mEditor->RemoveContainer(curNode);
}
else
{
res = mEditor->ReplaceContainer(curNode, address_of(newBlock), *aBlockTag);
}
if (NS_FAILED(res)) return res;
}
else if ((curNodeTag.EqualsWithConversion("table")) ||
(curNodeTag.EqualsWithConversion("tbody")) ||
(curNodeTag.EqualsWithConversion("tr")) ||
(curNodeTag.EqualsWithConversion("td")) ||
(curNodeTag.EqualsWithConversion("ol")) ||
(curNodeTag.EqualsWithConversion("ul")) ||
(curNodeTag.EqualsWithConversion("li")) ||
(curNodeTag.EqualsWithConversion("blockquote")) ||
(curNodeTag.EqualsWithConversion("div"))) // div's other than mozdivs
{
curBlock = 0; // forget any previous block used for previous inline nodes
// recursion time
nsCOMPtr<nsISupportsArray> childArray;
res = GetChildNodesForOperation(curNode, address_of(childArray));
if (NS_FAILED(res)) return res;
res = ApplyBlockStyle(childArray, aBlockTag);
if (NS_FAILED(res)) return res;
}
// if the node is a break, we honor it by putting further nodes in a new parent
else if (curNodeTag.EqualsWithConversion("br"))
{
curBlock = 0; // forget any previous block used for previous inline nodes
if (!bNoParent)
{
res = mEditor->DeleteNode(curNode);
if (NS_FAILED(res)) return res;
}
}
// if curNode is inline, pull it into curBlock
// note: it's assumed that consecutive inline nodes in the
// arrayOfNodes are actually members of the same block parent.
// this happens to be true now as a side effect of how
// arrayOfNodes is contructed, but some additional logic should
// be added here if that should change
else if (nsEditor::IsInlineNode(curNode) && !bNoParent)
{
// if curNode is a non editable, drop it if we are going to <pre>
if ((aBlockTag->EqualsWithConversion("pre")) && (!mEditor->IsEditable(curNode)))
continue; // do nothing to this block
// if no curBlock, make one
if (!curBlock)
{
res = SplitAsNeeded(aBlockTag, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
res = mEditor->CreateNode(*aBlockTag, curParent, offset, getter_AddRefs(curBlock));
if (NS_FAILED(res)) return res;
}
// if curNode is a Break, replace it with a return if we are going to <pre>
// xxx floppy moose
// this is a continuation of some inline nodes that belong together in
// the same block item. use curBlock
PRUint32 blockLen;
res = mEditor->GetLengthOfDOMNode(curBlock, blockLen);
if (NS_FAILED(res)) return res;
res = mEditor->MoveNode(curNode, curBlock, blockLen);
if (NS_FAILED(res)) return res;
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// SplitAsNeeded: given a tag name, split inOutParent up to the point
// where we can insert the tag. Adjust inOutParent and
// inOutOffset to pint to new location for tag.
nsresult
nsHTMLEditRules::SplitAsNeeded(const nsString *aTag,
nsCOMPtr<nsIDOMNode> *inOutParent,
PRInt32 *inOutOffset)
{
if (!aTag || !inOutParent || !inOutOffset) return NS_ERROR_NULL_POINTER;
if (!*inOutParent) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> tagParent, temp, splitNode, parent = *inOutParent;
nsresult res = NS_OK;
// check that we have a place that can legally contain the tag
while (!tagParent)
{
// sniffing up the parent tree until we find
// a legal place for the block
if (!parent) break;
if (mEditor->CanContainTag(parent, *aTag))
{
tagParent = parent;
break;
}
splitNode = parent;
parent->GetParentNode(getter_AddRefs(temp));
parent = temp;
}
if (!tagParent)
{
// could not find a place to build tag!
return NS_ERROR_FAILURE;
}
if (splitNode)
{
// we found a place for block, but above inOutParent. We need to split nodes.
res = mEditor->SplitNodeDeep(splitNode, *inOutParent, *inOutOffset, inOutOffset);
if (NS_FAILED(res)) return res;
*inOutParent = tagParent;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// AddTerminatingBR: place an ordinary br node at the end of aBlock,
// if it doens't already have one. If it has a moz-BR,
// simply convertit to a normal br.
nsresult
nsHTMLEditRules::AddTerminatingBR(nsIDOMNode *aBlock)
{
if (!aBlock) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> last;
nsresult res = mEditor->GetLastEditableLeaf(aBlock, address_of(last));
if (last && nsHTMLEditUtils::IsBreak(last))
{
if (nsHTMLEditUtils::IsMozBR(last))
{
// need to convert a br
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(last);
res = mEditor->RemoveAttribute(elem, NS_ConvertASCIItoUCS2("type"));
if (NS_FAILED(res)) return res;
}
else // we have what we want, we're done
{
return res;
}
}
else // need to add a br
{
PRUint32 len;
nsCOMPtr<nsIDOMNode> brNode;
res = mEditor->GetLengthOfDOMNode(aBlock, len);
if (NS_FAILED(res)) return res;
res = mEditor->CreateBR(aBlock, len, address_of(brNode));
if (NS_FAILED(res)) return res;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// JoinNodesSmart: join two nodes, doing whatever makes sense for their
// children (which often means joining them, too).
// aNodeLeft & aNodeRight must be same type of node.
nsresult
nsHTMLEditRules::JoinNodesSmart( nsIDOMNode *aNodeLeft,
nsIDOMNode *aNodeRight,
nsCOMPtr<nsIDOMNode> *aOutMergeParent,
PRInt32 *aOutMergeOffset)
{
// check parms
if (!aNodeLeft ||
!aNodeRight ||
!aOutMergeParent ||
!aOutMergeOffset)
return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
// caller responsible for:
// left & right node are same type
PRInt32 parOffset;
nsCOMPtr<nsIDOMNode> parent, rightParent;
res = nsEditor::GetNodeLocation(aNodeLeft, address_of(parent), &parOffset);
if (NS_FAILED(res)) return res;
aNodeRight->GetParentNode(getter_AddRefs(rightParent));
// if they don't have the same parent, first move the 'right' node
// to after the 'left' one
if (parent != rightParent)
{
res = mEditor->MoveNode(aNodeRight, parent, parOffset);
if (NS_FAILED(res)) return res;
}
// defaults for outParams
*aOutMergeParent = aNodeRight;
res = mEditor->GetLengthOfDOMNode(aNodeLeft, *((PRUint32*)aOutMergeOffset));
if (NS_FAILED(res)) return res;
// seperate join rules for differing blocks
if (nsHTMLEditUtils::IsParagraph(aNodeLeft))
{
// for para's, merge deep & add a <br> after merging
res = mEditor->JoinNodeDeep(aNodeLeft, aNodeRight, aOutMergeParent, aOutMergeOffset);
if (NS_FAILED(res)) return res;
// now we need to insert a br.
nsCOMPtr<nsIDOMNode> brNode;
res = mEditor->CreateBR(*aOutMergeParent, *aOutMergeOffset, address_of(brNode));
if (NS_FAILED(res)) return res;
res = nsEditor::GetNodeLocation(brNode, aOutMergeParent, aOutMergeOffset);
if (NS_FAILED(res)) return res;
(*aOutMergeOffset)++;
return res;
}
else if (nsHTMLEditUtils::IsList(aNodeLeft)
|| mEditor->IsTextNode(aNodeLeft))
{
// for list's, merge shallow (wouldn't want to combine list items)
res = mEditor->JoinNodes(aNodeLeft, aNodeRight, parent);
if (NS_FAILED(res)) return res;
return res;
}
else
{
// remember the last left child, and firt right child
nsCOMPtr<nsIDOMNode> lastLeft, firstRight;
res = mEditor->GetLastEditableChild(aNodeLeft, address_of(lastLeft));
if (NS_FAILED(res)) return res;
res = mEditor->GetFirstEditableChild(aNodeRight, address_of(firstRight));
if (NS_FAILED(res)) return res;
// for list items, divs, etc, merge smart
res = mEditor->JoinNodes(aNodeLeft, aNodeRight, parent);
if (NS_FAILED(res)) return res;
if (lastLeft && firstRight && mEditor->NodesSameType(lastLeft, firstRight))
{
return JoinNodesSmart(lastLeft, firstRight, aOutMergeParent, aOutMergeOffset);
}
}
return res;
}
nsresult
nsHTMLEditRules::GetTopEnclosingMailCite(nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *aOutCiteNode)
{
// check parms
if (!aNode || !aOutCiteNode)
return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node, parentNode;
node = do_QueryInterface(aNode);
while (node)
{
if (nsHTMLEditUtils::IsMailCite(node)) *aOutCiteNode = node;
if (nsHTMLEditUtils::IsBody(node)) break;
res = node->GetParentNode(getter_AddRefs(parentNode));
if (NS_FAILED(res)) return res;
node = parentNode;
}
return res;
}
nsresult
nsHTMLEditRules::AdjustSpecialBreaks(PRBool aSafeToAskFrames)
{
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsCOMPtr<nsISupports> isupports;
PRUint32 nodeCount,j;
// gather list of empty nodes
nsEmptyFunctor functor(mEditor);
nsDOMIterator iter;
nsresult res = iter.Init(mDocChangeRange);
if (NS_FAILED(res)) return res;
res = iter.MakeList(functor, address_of(arrayOfNodes));
if (NS_FAILED(res)) return res;
// put moz-br's into these empty li's and td's
res = arrayOfNodes->Count(&nodeCount);
if (NS_FAILED(res)) return res;
for (j = 0; j < nodeCount; j++)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
nsCOMPtr<nsIDOMNode> brNode, theNode( do_QueryInterface(isupports ) );
arrayOfNodes->RemoveElementAt(0);
res = CreateMozBR(theNode, 0, address_of(brNode));
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult
nsHTMLEditRules::AdjustWhitespace(nsISelection *aSelection)
{
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsCOMPtr<nsISupports> isupports;
PRUint32 nodeCount,j;
nsresult res;
nsAutoSelectionReset selectionResetter(aSelection, mEditor);
// special case for mDocChangeRange entirely in one text node.
// This is an efficiency hack for normal typing in the editor.
nsCOMPtr<nsIDOMNode> startNode, endNode;
PRInt32 startOffset, endOffset;
res = mDocChangeRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = mDocChangeRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = mDocChangeRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = mDocChangeRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
if (startNode == endNode)
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
if (nodeAsText)
{
res = DoTextNodeWhitespace(nodeAsText, startOffset, endOffset);
return res;
}
}
// gather up a list of text nodes
nsEditableTextFunctor functor(mEditor);
nsDOMIterator iter;
res = iter.Init(mDocChangeRange);
if (NS_FAILED(res)) return res;
res = iter.MakeList(functor, address_of(arrayOfNodes));
if (NS_FAILED(res)) return res;
// now adjust whitespace on node we found
res = arrayOfNodes->Count(&nodeCount);
if (NS_FAILED(res)) return res;
for (j = 0; j < nodeCount; j++)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
nsCOMPtr<nsIDOMCharacterData> textNode( do_QueryInterface(isupports ) );
arrayOfNodes->RemoveElementAt(0);
res = DoTextNodeWhitespace(textNode, -1, -1);
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult
nsHTMLEditRules::AdjustSelection(nsISelection *aSelection, nsIEditor::EDirection aAction)
{
if (!aSelection) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// if the selection isn't collapsed, do nothing.
// moose: one thing to do instead is check for the case of
// only a single break selected, and collapse it. Good thing? Beats me.
PRBool bCollapsed;
nsresult res = aSelection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
if (!bCollapsed) return res;
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode, temp;
PRInt32 selOffset;
res = mEditor->GetStartNodeAndOffset(aSelection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
temp = selNode;
// are we in an editable node?
while (!mEditor->IsEditable(selNode))
{
// scan up the tree until we find an editable place to be
res = nsEditor::GetNodeLocation(temp, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
if (!selNode) return NS_ERROR_FAILURE;
temp = selNode;
}
// are we in a text node?
nsCOMPtr<nsIDOMCharacterData> textNode = do_QueryInterface(selNode);
if (textNode)
return NS_OK; // we LIKE it when we are in a text node. that RULZ
// do we need to insert a special mozBR? We do if we are:
// 1) that block is same block where selection is AND
// 2) in a collapsed selection AND
// 3) after a normal (non-moz) br AND
// 4) that br is the last editable node in it's block
nsCOMPtr<nsIDOMNode> nearNode;
res = mEditor->GetPriorHTMLNode(selNode, selOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (!nearNode) return res;
// is nearNode also a descendant of same block?
nsCOMPtr<nsIDOMNode> block, nearBlock;
if (mEditor->IsBlockNode(selNode)) block = selNode;
else block = mEditor->GetBlockNodeParent(selNode);
nearBlock = mEditor->GetBlockNodeParent(nearNode);
if (block == nearBlock)
{
if (nearNode && nsHTMLEditUtils::IsBreak(nearNode)
&& !nsHTMLEditUtils::IsMozBR(nearNode))
{
PRBool bIsLast;
res = mEditor->IsLastEditableChild(nearNode, &bIsLast);
if (NS_FAILED(res)) return res;
if (bIsLast)
{
// need to insert special moz BR. Why? Because if we don't
// the user will see no new line for the break. Also, things
// like table cells won't grow in height.
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(selNode, selOffset, address_of(brNode));
if (NS_FAILED(res)) return res;
res = nsEditor::GetNodeLocation(brNode, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
// selection stays *before* moz-br, sticking to it
selPriv->SetInterlinePosition(PR_TRUE);
res = aSelection->Collapse(selNode,selOffset);
if (NS_FAILED(res)) return res;
}
else
{
// ok, the br inst the last child.
// the br might be right in front of a new block (ie,:
// <body> text<br> <ol><li>list item</li></ol></body> )
// in this case we also need moz-br.
nsCOMPtr<nsIDOMNode> nextNode;
res = mEditor->GetNextHTMLNode(nearNode, address_of(nextNode));
if (NS_FAILED(res)) return res;
res = mEditor->GetNextHTMLSibling(nearNode, address_of(nextNode));
if (NS_FAILED(res)) return res;
if (nextNode && mEditor->IsBlockNode(nextNode))
{
// need to insert special moz BR. Why? Because if we don't
// the user will see no new line for the break.
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(selNode, selOffset, address_of(brNode));
if (NS_FAILED(res)) return res;
res = nsEditor::GetNodeLocation(brNode, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
// selection stays *before* moz-br, sticking to it
selPriv->SetInterlinePosition(PR_TRUE);
res = aSelection->Collapse(selNode,selOffset);
if (NS_FAILED(res)) return res;
}
}
}
}
// we aren't in a textnode: are we adjacent to a break or an image?
res = mEditor->GetPriorHTMLSibling(selNode, selOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (nearNode && (nsHTMLEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)))
return NS_OK; // this is a good place for the caret to be
res = mEditor->GetNextHTMLSibling(selNode, selOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (nearNode && (nsHTMLEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)))
return NS_OK; // this is a good place for the caret to be
// look for a nearby text node.
// prefer the correct direction.
res = FindNearSelectableNode(selNode, selOffset, aAction, address_of(nearNode));
if (NS_FAILED(res)) return res;
if (!nearNode) return NS_OK; // couldn't find a near text node
// is the nearnode a text node?
textNode = do_QueryInterface(nearNode);
if (textNode)
{
PRInt32 offset = 0;
// put selection in right place:
if (aAction == nsIEditor::ePrevious)
textNode->GetLength((PRUint32*)&offset);
res = aSelection->Collapse(nearNode,offset);
}
else // must be break or image
{
res = nsEditor::GetNodeLocation(nearNode, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
if (aAction == nsIEditor::ePrevious) selOffset++; // want to be beyond it if we backed up to it
res = aSelection->Collapse(selNode, selOffset);
}
return res;
}
nsresult
nsHTMLEditRules::FindNearSelectableNode(nsIDOMNode *aSelNode,
PRInt32 aSelOffset,
nsIEditor::EDirection aDirection,
nsCOMPtr<nsIDOMNode> *outSelectableNode)
{
if (!aSelNode || !outSelectableNode) return NS_ERROR_NULL_POINTER;
*outSelectableNode = nsnull;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> nearNode, curNode;
if (aDirection == nsIEditor::ePrevious)
res = mEditor->GetPriorHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
else
res = mEditor->GetNextHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
if (NS_FAILED(res)) return res;
// scan in the right direction until we find an eligible text node,
// but dont cross any breaks, images, or table elements.
while (nearNode && !(mEditor->IsTextNode(nearNode)
|| nsHTMLEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)))
{
curNode = nearNode;
if (aDirection == nsIEditor::ePrevious)
res = mEditor->GetPriorHTMLNode(curNode, address_of(nearNode));
else
res = mEditor->GetNextHTMLNode(curNode, address_of(nearNode));
if (NS_FAILED(res)) return res;
}
if (nearNode)
{
// dont cross any table elements
PRBool bInDifTblElems;
res = InDifferentTableElements(nearNode, aSelNode, &bInDifTblElems);
if (NS_FAILED(res)) return res;
if (bInDifTblElems) return NS_OK;
// otherwise, ok, we have found a good spot to put the selection
*outSelectableNode = do_QueryInterface(nearNode);
}
return res;
}
nsresult
nsHTMLEditRules::InDifferentTableElements(nsIDOMNode *aNode1, nsIDOMNode *aNode2, PRBool *aResult)
{
if (!aNode1 || !aNode2 || !aResult) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> tn1, tn2, node = aNode1, temp;
while (node && !nsHTMLEditUtils::IsTableElement(node))
{
node->GetParentNode(getter_AddRefs(temp));
node = temp;
}
tn1 = node;
node = aNode2;
while (node && !nsHTMLEditUtils::IsTableElement(node))
{
node->GetParentNode(getter_AddRefs(temp));
node = temp;
}
tn2 = node;
*aResult = (tn1 != tn2);
return NS_OK;
}
nsresult
nsHTMLEditRules::RemoveEmptyNodes()
{
nsCOMPtr<nsIContentIterator> iter;
nsCOMPtr<nsISupportsArray> arrayOfNodes;
nsCOMPtr<nsISupports> isupports;
PRUint32 nodeCount,j;
// make an isupportsArray to hold a list of nodes
nsresult res = NS_NewISupportsArray(getter_AddRefs(arrayOfNodes));
if (NS_FAILED(res)) return res;
// need an iterator
iter = do_CreateInstance(kContentIteratorCID);
if (!iter) return NS_ERROR_NULL_POINTER;
// loop over iter and create list of empty containers
do
{
res = iter->Init(mDocChangeRange);
if (NS_FAILED(res)) return res;
// gather up a list of empty nodes
while (NS_ENUMERATOR_FALSE == iter->IsDone())
{
nsCOMPtr<nsIDOMNode> node;
nsCOMPtr<nsIContent> content;
res = iter->CurrentNode(getter_AddRefs(content));
if (NS_FAILED(res)) return res;
node = do_QueryInterface(content);
if (!node) return NS_ERROR_FAILURE;
PRBool bIsEmptyNode;
res = mEditor->IsEmptyNode(node, &bIsEmptyNode, PR_FALSE, PR_TRUE);
if (NS_FAILED(res)) return res;
if (bIsEmptyNode && !nsHTMLEditUtils::IsBody(node))
{
if (nsHTMLEditUtils::IsParagraph(node) ||
nsHTMLEditUtils::IsHeader(node) ||
nsHTMLEditUtils::IsListItem(node) ||
nsHTMLEditUtils::IsBlockquote(node)||
nsHTMLEditUtils::IsPre(node) ||
nsHTMLEditUtils::IsAddress(node) )
{
// if it is one of these, dont delete if sel inside.
// this is so we can create empty headings, etc, for the
// user to type into.
PRBool bIsSelInNode;
res = SelectionEndpointInNode(node, &bIsSelInNode);
if (NS_FAILED(res)) return res;
if (!bIsSelInNode)
{
isupports = do_QueryInterface(node);
arrayOfNodes->AppendElement(isupports);
}
}
else
{
// if it's not such an element, delete it even if sel is inside
isupports = do_QueryInterface(node);
arrayOfNodes->AppendElement(isupports);
}
}
res = iter->Next();
if (NS_FAILED(res)) return res;
}
// now delete the empty nodes
res = arrayOfNodes->Count(&nodeCount);
if (NS_FAILED(res)) return res;
for (j = 0; j < nodeCount; j++)
{
isupports = (dont_AddRef)(arrayOfNodes->ElementAt(0));
nsCOMPtr<nsIDOMNode> delNode( do_QueryInterface(isupports ) );
arrayOfNodes->RemoveElementAt(0);
res = mEditor->DeleteNode(delNode);
if (NS_FAILED(res)) return res;
}
} while (nodeCount); // if we deleted any, loop again
// deleting some nodes may make some parents now empty
return res;
}
nsresult
nsHTMLEditRules::SelectionEndpointInNode(nsIDOMNode *aNode, PRBool *aResult)
{
if (!aNode || !aResult) return NS_ERROR_NULL_POINTER;
*aResult = PR_FALSE;
nsCOMPtr<nsISelection>selection;
nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsISelectionPrivate>selPriv(do_QueryInterface(selection));
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_UNEXPECTED;
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
{
nsCOMPtr<nsISupports> currentItem;
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_UNEXPECTED;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode> startParent, endParent;
range->GetStartContainer(getter_AddRefs(startParent));
if (startParent)
{
if (aNode == startParent.get())
{
*aResult = PR_TRUE;
return NS_OK;
}
if (nsHTMLEditUtils::IsDescendantOf(startParent, aNode))
{
*aResult = PR_TRUE;
return NS_OK;
}
}
range->GetEndContainer(getter_AddRefs(endParent));
if (startParent == endParent) continue;
if (endParent)
{
if (aNode == endParent.get())
{
*aResult = PR_TRUE;
return NS_OK;
}
if (nsHTMLEditUtils::IsDescendantOf(endParent, aNode))
{
*aResult = PR_TRUE;
return NS_OK;
}
}
}
return res;
}
nsresult
nsHTMLEditRules::DoTextNodeWhitespace(nsIDOMCharacterData *aTextNode, PRInt32 aStart, PRInt32 aEnd)
{
// check parms
if (!aTextNode) return NS_ERROR_NULL_POINTER;
if (aStart == -1) // -1 means do the whole darn node please
{
aStart = 0;
aTextNode->GetLength((PRUint32*)&aEnd);
}
if (aStart == aEnd) return NS_OK;
nsresult res = NS_OK;
PRBool isPRE;
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aTextNode);
res = mEditor->IsPreformatted(node,&isPRE);
if (NS_FAILED(res)) return res;
if (isPRE)
{
// text node has a Preformatted style. All we need to do is strip out any nbsp's
// we just put in and replace them with spaces.
// moose: write me!
return res;
}
// else we are not preformatted. Need to convert any adjacent spaces to alterating
// space/nbsp pairs; need to convert stranded nbsp's to spaces; need to convert
// tabs to whitespace; need to convert returns to whitespace.
PRInt32 j = 0;
nsAutoString tempString;
aTextNode->SubstringData(aStart, aEnd, tempString);
// identify runs of whitespace
PRInt32 runStart = -1, runEnd = -1;
do {
PRUnichar c = tempString[j];
PRBool isSpace = nsCRT::IsAsciiSpace(c);
if (isSpace || c==nbsp)
{
if (runStart<0) runStart = j;
runEnd = j+1;
}
// translation of below line:
// if we have a whitespace run, AND
// either we are at the end of it, or the end of the whole string,
// THEN process it
if (runStart>=0 && (!(isSpace || c==nbsp) || (j==aEnd-1)) )
{
// current char is non whitespace, but we have identified an earlier
// run of whitespace. convert it if needed.
NS_PRECONDITION(runEnd>runStart, "this is what happens when integers turn bad!");
// runStart to runEnd is a run of whitespace
nsAutoString runStr, newStr;
tempString.Mid(runStr, runStart, runEnd-runStart);
res = ConvertWhitespace(runStr, newStr);
if (NS_FAILED(res)) return res;
if (runStr != newStr)
{
// delete the original whitespace run
EditTxn *txn;
// note 1: we are not telling edit listeners about these because they don't care
// note 2: we are not wrapping these in a placeholder because we know they already are
res = mEditor->CreateTxnForDeleteText(aTextNode, aStart+runStart, runEnd-runStart, (DeleteTextTxn**)&txn);
if (NS_FAILED(res)) return res;
if (!txn) return NS_ERROR_OUT_OF_MEMORY;
res = mEditor->Do(txn);
if (NS_FAILED(res)) return res;
// The transaction system (if any) has taken ownwership of txn
NS_IF_RELEASE(txn);
// insert the new run
res = mEditor->CreateTxnForInsertText(newStr, aTextNode, aStart+runStart, (InsertTextTxn**)&txn);
if (NS_FAILED(res)) return res;
if (!txn) return NS_ERROR_OUT_OF_MEMORY;
res = mEditor->Do(txn);
// The transaction system (if any) has taken ownwership of txns.
NS_IF_RELEASE(txn);
}
runStart = -1; // reset our run
}
j++; // next char please!
} while ((PRUint32)j < tempString.Length());
return res;
}
nsresult
nsHTMLEditRules::ConvertWhitespace(const nsString & inString, nsString & outString)
{
PRUint32 j,len = inString.Length();
switch (len)
{
case 0:
outString.SetLength(0);
return NS_OK;
case 1:
if (inString.EqualsWithConversion("\n")) // a bit of a hack: don't convert single newlines that
outString.AssignWithConversion("\n"); // dont have whitespace adjacent. This is to preserve
else // html source formatting to some degree.
outString.AssignWithConversion(" ");
return NS_OK;
case 2:
outString.Assign((PRUnichar)nbsp);
outString.AppendWithConversion(" ");
return NS_OK;
case 3:
outString.AssignWithConversion(" ");
outString += (PRUnichar)nbsp;
outString.AppendWithConversion(" ");
return NS_OK;
}
if (len%2) // length is odd
{
for (j=0;j<len;j++)
{
if (!(j & 0x01)) outString.AppendWithConversion(" "); // even char
else outString += (PRUnichar)nbsp; // odd char
}
}
else
{
outString.AssignWithConversion(" ");
outString += (PRUnichar)nbsp;
outString += (PRUnichar)nbsp;
for (j=0;j<len-3;j++)
{
if (!(j%2)) outString.AppendWithConversion(" "); // even char
else outString += (PRUnichar)nbsp; // odd char
}
}
return NS_OK;
}
nsresult
nsHTMLEditRules::PopListItem(nsIDOMNode *aListItem, PRBool *aOutOfList)
{
// check parms
if (!aListItem || !aOutOfList)
return NS_ERROR_NULL_POINTER;
// init out params
*aOutOfList = PR_FALSE;
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(aListItem));
PRInt32 offset;
nsresult res = nsEditor::GetNodeLocation(curNode, address_of(curParent), &offset);
if (NS_FAILED(res)) return res;
if (!nsHTMLEditUtils::IsListItem(curNode))
return NS_ERROR_FAILURE;
// if it's first or last list item, dont need to split the list
// otherwise we do.
nsCOMPtr<nsIDOMNode> curParPar;
PRInt32 parOffset;
res = nsEditor::GetNodeLocation(curParent, address_of(curParPar), &parOffset);
if (NS_FAILED(res)) return res;
PRBool bIsFirstListItem;
res = mEditor->IsFirstEditableChild(curNode, &bIsFirstListItem);
if (NS_FAILED(res)) return res;
PRBool bIsLastListItem;
res = mEditor->IsLastEditableChild(curNode, &bIsLastListItem);
if (NS_FAILED(res)) return res;
if (!bIsFirstListItem && !bIsLastListItem)
{
// split the list
nsCOMPtr<nsIDOMNode> newBlock;
res = mEditor->SplitNode(curParent, offset, getter_AddRefs(newBlock));
if (NS_FAILED(res)) return res;
}
if (!bIsFirstListItem) parOffset++;
res = mEditor->MoveNode(curNode, curParPar, parOffset);
if (NS_FAILED(res)) return res;
// unwrap list item contents if they are no longer in a list
if (!nsHTMLEditUtils::IsList(curParPar)
&& nsHTMLEditUtils::IsListItem(curNode))
{
res = AddTerminatingBR(curNode);
if (NS_FAILED(res)) return res;
res = mEditor->RemoveContainer(curNode);
if (NS_FAILED(res)) return res;
*aOutOfList = PR_TRUE;
}
return res;
}
nsresult
nsHTMLEditRules::ConfirmSelectionInBody()
{
nsresult res = NS_OK;
nsCOMPtr<nsIDOMElement> bodyElement;
nsCOMPtr<nsIDOMNode> bodyNode;
// get the body
res = mEditor->GetRootElement(getter_AddRefs(bodyElement));
if (NS_FAILED(res)) return res;
if (!bodyElement) return NS_ERROR_UNEXPECTED;
bodyNode = do_QueryInterface(bodyElement);
// get the selection
nsCOMPtr<nsISelection>selection;
res = mEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
// get the selection start location
nsCOMPtr<nsIDOMNode> selNode, temp, parent;
PRInt32 selOffset;
res = mEditor->GetStartNodeAndOffset(selection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
temp = selNode;
// check that selNode is inside body
while (temp && !nsHTMLEditUtils::IsBody(temp))
{
res = temp->GetParentNode(getter_AddRefs(parent));
temp = parent;
}
// if we aren't in the body, force the issue
if (!temp)
{
// uncomment this to see when we get bad selections
// NS_NOTREACHED("selection not in body");
selection->Collapse(bodyNode,0);
}
// get the selection end location
res = mEditor->GetEndNodeAndOffset(selection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
temp = selNode;
// check that selNode is inside body
while (temp && !nsHTMLEditUtils::IsBody(temp))
{
res = temp->GetParentNode(getter_AddRefs(parent));
temp = parent;
}
// if we aren't in the body, force the issue
if (!temp)
{
// uncomment this to see when we get bad selections
// NS_NOTREACHED("selection not in body");
selection->Collapse(bodyNode,0);
}
return res;
}
nsresult
nsHTMLEditRules::UpdateDocChangeRange(nsIDOMRange *aRange)
{
nsresult res = NS_OK;
if (!mDocChangeRange)
{
// clone aRange.
res = aRange->CloneRange(getter_AddRefs(mDocChangeRange));
return res;
}
else
{
PRInt32 result;
// compare starts of ranges
res = mDocChangeRange->CompareBoundaryPoints(nsIDOMRange::START_TO_START, aRange, &result);
if (NS_FAILED(res)) return res;
if (result > 0) // positive result means mDocChangeRange start is after aRange start
{
nsCOMPtr<nsIDOMNode> startNode;
PRInt32 startOffset;
res = aRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = aRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = mDocChangeRange->SetStart(startNode, startOffset);
if (NS_FAILED(res)) return res;
}
// compare ends of ranges
res = mDocChangeRange->CompareBoundaryPoints(nsIDOMRange::END_TO_END, aRange, &result);
if (NS_FAILED(res)) return res;
if (result < 0) // negative result means mDocChangeRange end is before aRange end
{
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 endOffset;
res = aRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = aRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
res = mDocChangeRange->SetEnd(endNode, endOffset);
if (NS_FAILED(res)) return res;
}
}
return res;
}
nsresult
nsHTMLEditRules::InsertMozBRIfNeeded(nsIDOMNode *aNode)
{
if (!aNode) return NS_ERROR_NULL_POINTER;
if (!mEditor->IsBlockNode(aNode)) return NS_OK;
PRBool isEmpty;
nsCOMPtr<nsIDOMNode> brNode;
nsresult res = mEditor->IsEmptyNode(aNode, &isEmpty);
if (NS_FAILED(res)) return res;
if (isEmpty)
{
res = CreateMozBR(aNode, 0, address_of(brNode));
}
return res;
}
#ifdef XP_MAC
#pragma mark -
#pragma mark nsIEditActionListener methods
#pragma mark -
#endif
NS_IMETHODIMP
nsHTMLEditRules::WillCreateNode(const nsString& aTag, nsIDOMNode *aParent, PRInt32 aPosition)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidCreateNode(const nsString& aTag,
nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aPosition,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
// assumption that Join keeps the righthand node
nsresult res = mUtilRange->SelectNode(aNode);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillInsertNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aPosition)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidInsertNode(nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aPosition,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
nsresult res = mUtilRange->SelectNode(aNode);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteNode(nsIDOMNode *aChild)
{
if (!mListenerEnabled) return NS_OK;
nsresult res = mUtilRange->SelectNode(aChild);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteNode(nsIDOMNode *aChild, nsresult aResult)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::WillSplitNode(nsIDOMNode *aExistingRightNode, PRInt32 aOffset)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidSplitNode(nsIDOMNode *aExistingRightNode,
PRInt32 aOffset,
nsIDOMNode *aNewLeftNode,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
nsresult res = mUtilRange->SetStart(aNewLeftNode, 0);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetEnd(aExistingRightNode, 0);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillJoinNodes(nsIDOMNode *aLeftNode, nsIDOMNode *aRightNode, nsIDOMNode *aParent)
{
if (!mListenerEnabled) return NS_OK;
// remember split point
nsresult res = nsEditor::GetLengthOfDOMNode(aLeftNode, mJoinOffset);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidJoinNodes(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
nsIDOMNode *aParent,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
// assumption that Join keeps the righthand node
nsresult res = mUtilRange->SetStart(aRightNode, mJoinOffset);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetEnd(aRightNode, mJoinOffset);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillInsertText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, const nsString &aString)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidInsertText(nsIDOMCharacterData *aTextNode,
PRInt32 aOffset,
const nsString &aString,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
PRInt32 length = aString.Length();
nsCOMPtr<nsIDOMNode> theNode = do_QueryInterface(aTextNode);
nsresult res = mUtilRange->SetStart(theNode, aOffset);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetEnd(theNode, aOffset+length);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteText(nsIDOMCharacterData *aTextNode, PRInt32 aOffset, PRInt32 aLength)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteText(nsIDOMCharacterData *aTextNode,
PRInt32 aOffset,
PRInt32 aLength,
nsresult aResult)
{
if (!mListenerEnabled) return NS_OK;
nsCOMPtr<nsIDOMNode> theNode = do_QueryInterface(aTextNode);
nsresult res = mUtilRange->SetStart(theNode, aOffset);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetEnd(theNode, aOffset);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteSelection(nsISelection *aSelection)
{
if (!mListenerEnabled) return NS_OK;
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode;
PRInt32 selOffset;
nsresult res = mEditor->GetStartNodeAndOffset(aSelection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetStart(selNode, selOffset);
if (NS_FAILED(res)) return res;
res = mEditor->GetEndNodeAndOffset(aSelection, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
res = mUtilRange->SetEnd(selNode, selOffset);
if (NS_FAILED(res)) return res;
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteSelection(nsISelection *aSelection)
{
return NS_OK;
}
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