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gecko-dev/editor/base/nsHTMLEditor.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 1.0 (the "NPL") you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsTextEditor.h"
#include "nsHTMLEditor.h"
#include "nsHTMLEditRules.h"
#include "nsEditorEventListeners.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMRange.h"
#include "nsIDOMDocument.h"
#include "nsIDOMEventReceiver.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMSelection.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsIEnumerator.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsEditorCID.h"
#include "nsLayoutCID.h"
#include "nsIDOMRange.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsITableCellLayout.h" //For GetColIndexForCell
static NS_DEFINE_IID(kIDOMEventReceiverIID, NS_IDOMEVENTRECEIVER_IID);
static NS_DEFINE_IID(kIDOMMouseListenerIID, NS_IDOMMOUSELISTENER_IID);
static NS_DEFINE_IID(kIDOMKeyListenerIID, NS_IDOMKEYLISTENER_IID);
static NS_DEFINE_CID(kEditorCID, NS_EDITOR_CID);
static NS_DEFINE_IID(kIEditorIID, NS_IEDITOR_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kITextEditorIID, NS_ITEXTEDITOR_IID);
static NS_DEFINE_CID(kTextEditorCID, NS_TEXTEDITOR_CID);
static NS_DEFINE_IID(kIHTMLEditorIID, NS_IHTMLEDITOR_IID);
static NS_DEFINE_CID(kHTMLEditorCID, NS_HTMLEDITOR_CID);
static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
static NS_DEFINE_IID(kIContentIteratorIID, NS_ICONTENTITERTOR_IID);
#ifdef NS_DEBUG
static PRBool gNoisy = PR_FALSE;
#else
static const PRBool gNoisy = PR_FALSE;
#endif
nsHTMLEditor::nsHTMLEditor()
{
// Done in nsEditor
// NS_INIT_REFCNT();
}
nsHTMLEditor::~nsHTMLEditor()
{
//the autopointers will clear themselves up.
}
// Adds appropriate AddRef, Release, and QueryInterface methods for derived class
//NS_IMPL_ISUPPORTS_INHERITED(nsHTMLEditor, nsTextEditor, nsIHTMLEditor)
//NS_IMPL_ADDREF_INHERITED(Class, Super)
NS_IMETHODIMP_(nsrefcnt) nsHTMLEditor::AddRef(void)
{
return nsTextEditor::AddRef();
}
//NS_IMPL_RELEASE_INHERITED(Class, Super)
NS_IMETHODIMP_(nsrefcnt) nsHTMLEditor::Release(void)
{
return nsTextEditor::Release();
}
//NS_IMPL_QUERY_INTERFACE_INHERITED(Class, Super, AdditionalInterface)
NS_IMETHODIMP nsHTMLEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (!aInstancePtr) return NS_ERROR_NULL_POINTER;
if (aIID.Equals(nsIHTMLEditor::GetIID())) {
*aInstancePtr = NS_STATIC_CAST(nsIHTMLEditor*, this);
NS_ADDREF_THIS();
return NS_OK;
}
return nsTextEditor::QueryInterface(aIID, aInstancePtr);
}
NS_IMETHODIMP nsHTMLEditor::Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell)
{
NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
nsresult result=NS_ERROR_NULL_POINTER;
if ((nsnull!=aDoc) && (nsnull!=aPresShell))
{
return nsTextEditor::Init(aDoc, aPresShell);
}
return result;
}
void nsHTMLEditor::InitRules()
{
// instantiate the rules for this text editor
// XXX: we should be told which set of rules to instantiate
mRules = new nsHTMLEditRules();
mRules->Init(this);
}
NS_IMETHODIMP nsHTMLEditor::SetTextProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue)
{
return nsTextEditor::SetTextProperty(aProperty, aAttribute, aValue);
}
NS_IMETHODIMP nsHTMLEditor::GetTextProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue,
PRBool &aFirst, PRBool &aAny, PRBool &aAll)
{
return nsTextEditor::GetTextProperty(aProperty, aAttribute, aValue, aFirst, aAny, aAll);
}
NS_IMETHODIMP nsHTMLEditor::RemoveTextProperty(nsIAtom *aProperty, const nsString *aAttribute)
{
return nsTextEditor::RemoveTextProperty(aProperty, aAttribute);
}
NS_IMETHODIMP nsHTMLEditor::DeleteSelection(nsIEditor::Direction aDir)
{
return nsTextEditor::DeleteSelection(aDir);
}
NS_IMETHODIMP nsHTMLEditor::InsertText(const nsString& aStringToInsert)
{
return nsTextEditor::InsertText(aStringToInsert);
}
NS_IMETHODIMP nsHTMLEditor::InsertBreak()
{
nsresult result;
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
result = nsEditor::BeginTransaction();
if (NS_FAILED(result)) { return result; }
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
nsTextRulesInfo ruleInfo(nsHTMLEditRules::kInsertBreak);
result = mRules->WillDoAction(selection, &ruleInfo, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
// create the new BR node
nsCOMPtr<nsIDOMNode> newNode;
nsAutoString tag("BR");
result = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
if (NS_SUCCEEDED(result) && newNode)
{
// set the selection to the new node
nsCOMPtr<nsIDOMNode>parent;
result = newNode->GetParentNode(getter_AddRefs(parent));
if (NS_SUCCEEDED(result) && parent)
{
PRInt32 offsetInParent=-1; // we use the -1 as a marker to see if we need to compute this or not
nsCOMPtr<nsIDOMNode>nextNode;
newNode->GetNextSibling(getter_AddRefs(nextNode));
if (nextNode)
{
nsCOMPtr<nsIDOMCharacterData>nextTextNode;
nextTextNode = do_QueryInterface(nextNode);
if (!nextTextNode) {
nextNode = do_QueryInterface(newNode);
}
else {
offsetInParent=0;
}
}
else {
nextNode = do_QueryInterface(newNode);
}
result = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_SUCCEEDED(result))
{
if (-1==offsetInParent)
{
nextNode->GetParentNode(getter_AddRefs(parent));
result = nsIEditorSupport::GetChildOffset(nextNode, parent, offsetInParent);
if (NS_SUCCEEDED(result)) {
selection->Collapse(parent, offsetInParent+1); // +1 to insert just after the break
}
}
else
{
selection->Collapse(nextNode, offsetInParent);
}
}
}
}
// post-process, always called if WillInsertBreak didn't return cancel==PR_TRUE
result = mRules->DidDoAction(selection, &ruleInfo, result);
}
nsresult endTxnResult = nsEditor::EndTransaction(); // don't return this result!
NS_ASSERTION ((NS_SUCCEEDED(endTxnResult)), "bad end transaction result");
// XXXX: Horrible hack! We are doing this because
// of an error in Gecko which is not rendering the
// document after a change via the DOM - gpk 2/13/99
// BEGIN HACK!!!
HACKForceRedraw();
// END HACK
return result;
}
// Methods shared with the base editor.
// Note: We could call each of these via nsTextEditor -- is that better?
NS_IMETHODIMP nsHTMLEditor::EnableUndo(PRBool aEnable)
{
return nsTextEditor::EnableUndo(aEnable);
}
NS_IMETHODIMP nsHTMLEditor::Undo(PRUint32 aCount)
{
return nsTextEditor::Undo(aCount);
}
NS_IMETHODIMP nsHTMLEditor::CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo)
{
return nsTextEditor::CanUndo(aIsEnabled, aCanUndo);
}
NS_IMETHODIMP nsHTMLEditor::Redo(PRUint32 aCount)
{
return nsTextEditor::Redo(aCount);
}
NS_IMETHODIMP nsHTMLEditor::CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo)
{
return nsTextEditor::CanRedo(aIsEnabled, aCanRedo);
}
NS_IMETHODIMP nsHTMLEditor::BeginTransaction()
{
return nsTextEditor::BeginTransaction();
}
NS_IMETHODIMP nsHTMLEditor::EndTransaction()
{
return nsTextEditor::EndTransaction();
}
NS_IMETHODIMP nsHTMLEditor::MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::MoveSelectionUp(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::MoveSelectionDown(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::MoveSelectionNext(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::MoveSelectionPrevious(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::SelectNext(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return nsTextEditor::SelectPrevious(aIncrement, aExtendSelection);
}
NS_IMETHODIMP nsHTMLEditor::SelectAll()
{
return nsTextEditor::SelectAll();
}
NS_IMETHODIMP nsHTMLEditor::ScrollUp(nsIAtom *aIncrement)
{
return nsTextEditor::ScrollUp(aIncrement);
}
NS_IMETHODIMP nsHTMLEditor::ScrollDown(nsIAtom *aIncrement)
{
return nsTextEditor::ScrollDown(aIncrement);
}
NS_IMETHODIMP nsHTMLEditor::ScrollIntoView(PRBool aScrollToBegin)
{
return nsTextEditor::ScrollIntoView(aScrollToBegin);
}
NS_IMETHODIMP nsHTMLEditor::Cut()
{
return nsTextEditor::Cut();
}
NS_IMETHODIMP nsHTMLEditor::Copy()
{
return nsTextEditor::Copy();
}
NS_IMETHODIMP nsHTMLEditor::Paste()
{
return nsTextEditor::Paste();
}
NS_IMETHODIMP nsHTMLEditor::Insert(nsString& aInputString)
{
return nsTextEditor::Insert(aInputString);
}
NS_IMETHODIMP nsHTMLEditor::OutputText(nsString& aOutputString)
{
return nsTextEditor::OutputText(aOutputString);
}
NS_IMETHODIMP nsHTMLEditor::OutputHTML(nsString& aOutputString)
{
return nsTextEditor::OutputHTML(aOutputString);
}
NS_IMETHODIMP
nsHTMLEditor::CopyAttributes(nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
{
return nsTextEditor::CopyAttributes(aDestNode, aSourceNode);
}
//================================================================
// HTML Editor methods
//
// Note: Table Editing methods are implemented in EditTable.cpp
//
NS_IMETHODIMP
nsHTMLEditor::AddBlockParent(nsString& aParentTag)
{
if (gNoisy)
{
char *tag = aParentTag.ToNewCString();
printf("---------- nsHTMLEditor::AddBlockParent %s ----------\n", tag);
delete [] tag;
}
nsresult result=NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
// set the block parent for all selected ranges
nsEditor::BeginTransaction();
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection);
if (enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode>commonParent;
result = range->GetCommonParent(getter_AddRefs(commonParent));
if ((NS_SUCCEEDED(result)) && commonParent)
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMNode> startParent; nsCOMPtr<nsIDOMNode> endParent;
range->GetStartParent(getter_AddRefs(startParent));
range->GetEndParent(getter_AddRefs(endParent));
if (startParent.get()==endParent.get())
{ // the range is entirely contained within a single node
result = ReParentContentOfNode(startParent, aParentTag);
}
else
{
nsCOMPtr<nsIDOMNode> startGrandParent;
startParent->GetParentNode(getter_AddRefs(startGrandParent));
nsCOMPtr<nsIDOMNode> endGrandParent;
endParent->GetParentNode(getter_AddRefs(endGrandParent));
if (NS_SUCCEEDED(result))
{
PRBool canCollapse = PR_FALSE;
if (endGrandParent.get()==startGrandParent.get())
{
result = IntermediateNodesAreInline(range, startParent, startOffset,
endParent, endOffset,
canCollapse);
}
if (NS_SUCCEEDED(result))
{
if (PR_TRUE==canCollapse)
{ // the range is between 2 nodes that have a common (immediate) grandparent,
// and any intermediate nodes are just inline style nodes
result = ReParentContentOfNode(startParent, aParentTag);
}
else
{ // the range is between 2 nodes that have no simple relationship
result = ReParentContentOfRange(range, aParentTag);
}
}
}
}
if (NS_SUCCEEDED(result))
{ // compute a range for the selection
// don't want to actually do anything with selection, because
// we are still iterating through it. Just want to create and remember
// an nsIDOMRange, and later add the range to the selection after clearing it.
// XXX: I'm blocked here because nsIDOMSelection doesn't provide a mechanism
// for setting a compound selection yet.
}
}
}
}
nsEditor::EndTransaction();
if (NS_SUCCEEDED(result))
{ // set the selection
// XXX: can't do anything until I can create ranges
}
}
if (gNoisy) {printf("Finished nsHTMLEditor::AddBlockParent with this content:\n"); DebugDumpContent(); } // DEBUG
return result;
}
NS_IMETHODIMP
nsHTMLEditor::ReParentContentOfNode(nsIDOMNode *aNode, nsString &aParentTag)
{
if (!aNode) { return NS_ERROR_NULL_POINTER; }
// find the current block parent, or just use aNode if it is a block node
nsCOMPtr<nsIDOMElement>blockParentElement;
nsCOMPtr<nsIDOMNode>nodeToReParent; // this is the node we'll operate on, by default it's aNode
nsresult result = aNode->QueryInterface(nsIDOMNode::GetIID(), getter_AddRefs(nodeToReParent));
PRBool nodeIsInline;
PRBool nodeIsBlock=PR_FALSE;
nsTextEditor::IsNodeInline(aNode, nodeIsInline);
if (PR_FALSE==nodeIsInline)
{
nsresult QIResult;
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
QIResult = aNode->QueryInterface(nsIDOMCharacterData::GetIID(), getter_AddRefs(nodeAsText));
if (NS_FAILED(QIResult) || !nodeAsText) {
nodeIsBlock=PR_TRUE;
}
}
// if aNode is the block parent, then we're operating on one of its children
if (PR_TRUE==nodeIsBlock)
{
result = aNode->QueryInterface(nsIDOMNode::GetIID(), getter_AddRefs(blockParentElement));
if (NS_SUCCEEDED(result) && blockParentElement) {
result = aNode->GetFirstChild(getter_AddRefs(nodeToReParent));
}
}
else {
result = nsTextEditor::GetBlockParent(aNode, getter_AddRefs(blockParentElement));
}
// at this point, we must have a good result, a node to reparent, and a block parent
if (!nodeToReParent) { return NS_ERROR_UNEXPECTED;}
if (!blockParentElement) { return NS_ERROR_NULL_POINTER;}
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode> newParentNode;
nsCOMPtr<nsIDOMNode> blockParentNode = do_QueryInterface(blockParentElement);
// we need to treat nodes directly inside the body differently
nsAutoString parentTag;
blockParentElement->GetTagName(parentTag);
nsAutoString bodyTag = "body";
if (PR_TRUE==parentTag.EqualsIgnoreCase(bodyTag))
{
// if nodeToReParent is a text node, we have <BODY><TEXT>text.
// re-parent <TEXT> into a new <aTag> at the offset of <TEXT> in <BODY>
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(nodeToReParent);
if (nodeAsText)
{
result = ReParentBlockContent(nodeToReParent, aParentTag, blockParentNode, parentTag,
getter_AddRefs(newParentNode));
}
else
{ // this is the case of an insertion point between 2 non-text objects
PRInt32 offsetInParent=0;
result = nsIEditorSupport::GetChildOffset(nodeToReParent, blockParentNode, offsetInParent);
NS_ASSERTION((NS_SUCCEEDED(result)), "bad result from GetChildOffset");
// otherwise, just create the block parent at the selection
result = nsTextEditor::CreateNode(aParentTag, blockParentNode, offsetInParent,
getter_AddRefs(newParentNode));
// XXX: need to create a bogus text node inside this new block!
// that means, I need to generalize bogus node handling
}
}
else
{
// for the selected block content, replace blockParentNode with a new node of the correct type
if (PR_FALSE==parentTag.EqualsIgnoreCase(aParentTag))
{
if (gNoisy) { DebugDumpContent(); } // DEBUG
result = ReParentBlockContent(nodeToReParent, aParentTag, blockParentNode, parentTag,
getter_AddRefs(newParentNode));
if (NS_SUCCEEDED(result) && newParentNode)
{
PRBool hasChildren;
blockParentNode->HasChildNodes(&hasChildren);
if (PR_FALSE==hasChildren)
{
result = nsEditor::DeleteNode(blockParentNode);
if (gNoisy)
{
printf("deleted old block parent node %p\n", blockParentNode.get());
DebugDumpContent(); // DEBUG
}
}
}
}
else { // otherwise, it's a no-op
if (gNoisy) { printf("AddBlockParent is a no-op for this collapsed selection.\n"); }
}
}
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::ReParentBlockContent(nsIDOMNode *aNode,
nsString &aParentTag,
nsIDOMNode *aBlockParentNode,
nsString &aBlockParentTag,
nsIDOMNode **aNewParentNode)
{
if (!aNode || !aBlockParentNode || !aNewParentNode) { return NS_ERROR_NULL_POINTER; }
nsCOMPtr<nsIDOMNode>ancestor;
nsresult result = aNode->GetParentNode(getter_AddRefs(ancestor));
nsCOMPtr<nsIDOMNode>previousAncestor = do_QueryInterface(aNode);
while (NS_SUCCEEDED(result) && ancestor)
{
nsCOMPtr<nsIDOMElement>ancestorElement = do_QueryInterface(ancestor);
nsAutoString ancestorTag;
ancestorElement->GetTagName(ancestorTag);
if (ancestorTag.EqualsIgnoreCase(aBlockParentTag))
{
break; // previousAncestor will contain the node to operate on
}
previousAncestor = do_QueryInterface(ancestor);
result = ancestorElement->GetParentNode(getter_AddRefs(ancestor));
}
// now, previousAncestor is the node we are operating on
nsCOMPtr<nsIDOMNode>leftNode, rightNode;
result = GetBlockDelimitedContent(aBlockParentNode,
previousAncestor,
getter_AddRefs(leftNode),
getter_AddRefs(rightNode));
if ((NS_SUCCEEDED(result)) && leftNode && rightNode)
{
PRInt32 offsetInParent=0;
PRBool canContain;
CanContainBlock(aParentTag, aBlockParentTag, canContain);
if (PR_TRUE==canContain)
{
result = nsIEditorSupport::GetChildOffset(leftNode, aBlockParentNode, offsetInParent);
NS_ASSERTION((NS_SUCCEEDED(result)), "bad result from GetChildOffset");
result = nsTextEditor::CreateNode(aParentTag, aBlockParentNode, offsetInParent, aNewParentNode);
if (gNoisy) { printf("created a node in aBlockParentNode at offset %d\n", offsetInParent); }
}
else
{
nsCOMPtr<nsIDOMNode> grandParent;
result = aBlockParentNode->GetParentNode(getter_AddRefs(grandParent));
if ((NS_SUCCEEDED(result)) && grandParent)
{
nsCOMPtr<nsIDOMNode>firstChildNode, lastChildNode;
aBlockParentNode->GetFirstChild(getter_AddRefs(firstChildNode));
aBlockParentNode->GetLastChild(getter_AddRefs(lastChildNode));
if (firstChildNode==leftNode && lastChildNode==rightNode)
{
result = nsIEditorSupport::GetChildOffset(aBlockParentNode, grandParent, offsetInParent);
NS_ASSERTION((NS_SUCCEEDED(result)), "bad result from GetChildOffset");
result = nsTextEditor::CreateNode(aParentTag, grandParent, offsetInParent, aNewParentNode);
if (gNoisy) { printf("created a node in grandParent at offset %d\n", offsetInParent); }
}
else
{
result = nsIEditorSupport::GetChildOffset(leftNode, aBlockParentNode, offsetInParent);
NS_ASSERTION((NS_SUCCEEDED(result)), "bad result from GetChildOffset");
result = nsTextEditor::CreateNode(aParentTag, aBlockParentNode, offsetInParent, aNewParentNode);
if (gNoisy) { printf("created a node in aBlockParentNode at offset %d\n", offsetInParent); }
}
}
}
if ((NS_SUCCEEDED(result)) && *aNewParentNode)
{ // move all the children/contents of aBlockParentNode to aNewParentNode
nsCOMPtr<nsIDOMNode>childNode = do_QueryInterface(rightNode);
nsCOMPtr<nsIDOMNode>previousSiblingNode;
while (NS_SUCCEEDED(result) && childNode)
{
childNode->GetPreviousSibling(getter_AddRefs(previousSiblingNode));
// explicitly delete of childNode from it's current parent
// can't just rely on DOM semantics of InsertNode doing the delete implicitly, doesn't undo!
result = nsEditor::DeleteNode(childNode);
if (NS_SUCCEEDED(result))
{
result = nsEditor::InsertNode(childNode, *aNewParentNode, 0);
if (gNoisy)
{
printf("re-parented sibling node %p\n", childNode.get());
}
}
if (childNode==leftNode || rightNode==leftNode) {
break;
}
childNode = do_QueryInterface(previousSiblingNode);
} // end while loop
}
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::ReParentContentOfRange(nsIDOMRange *aRange, nsString &aParentTag)
{
nsresult result=NS_ERROR_NOT_IMPLEMENTED;
printf("transformations over complex selections not implemented.\n");
return result;
}
// this should probably get moved into rules? is this an app-level choice, or
// a restriction of HTML itself?
NS_IMETHODIMP
nsHTMLEditor::CanContainBlock(nsString &aBlockChild, nsString &aBlockParent, PRBool &aCanContain)
{
if (aBlockParent.EqualsIgnoreCase("body") ||
aBlockParent.EqualsIgnoreCase("td") ||
aBlockParent.EqualsIgnoreCase("th") ||
aBlockParent.EqualsIgnoreCase("blockquote") )
{
aCanContain = PR_TRUE;
return NS_OK;
}
aCanContain = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditor::RemoveBlockParent()
{
if (gNoisy) {
printf("---------- nsHTMLEditor::RemoveBlockParent ----------\n");
}
nsresult result=NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
nsEditor::BeginTransaction();
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection);
if (enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode>commonParent;
result = range->GetCommonParent(getter_AddRefs(commonParent));
if ((NS_SUCCEEDED(result)) && commonParent)
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMNode> startParent; nsCOMPtr<nsIDOMNode> endParent;
range->GetStartParent(getter_AddRefs(startParent));
range->GetEndParent(getter_AddRefs(endParent));
if (startParent.get()==endParent.get())
{ // the range is entirely contained within a single node
nsCOMPtr<nsIDOMElement>blockParentElement;
result = nsTextEditor::GetBlockParent(startParent, getter_AddRefs(blockParentElement));
while ((NS_SUCCEEDED(result)) && blockParentElement)
{
nsAutoString childTag; // leave as empty string
nsAutoString blockParentTag;
blockParentElement->GetTagName(blockParentTag);
PRBool canContain;
CanContainBlock(childTag, blockParentTag, canContain);
if (PR_TRUE==canContain) {
break;
}
else
{
// go through list backwards so deletes don't interfere with the iteration
nsCOMPtr<nsIDOMNodeList> childNodes;
result = blockParentElement->GetChildNodes(getter_AddRefs(childNodes));
if ((NS_SUCCEEDED(result)) && (childNodes))
{
nsCOMPtr<nsIDOMNode>grandParent;
blockParentElement->GetParentNode(getter_AddRefs(grandParent));
PRInt32 offsetInParent;
result = nsIEditorSupport::GetChildOffset(blockParentElement, grandParent, offsetInParent);
PRUint32 childCount;
childNodes->GetLength(&childCount);
PRInt32 i=childCount-1;
for ( ; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
{
nsCOMPtr<nsIDOMNode> childNode;
result = childNodes->Item(i, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(result)) && (childNode))
{
result = nsTextEditor::DeleteNode(childNode);
if (NS_SUCCEEDED(result)) {
result = nsTextEditor::InsertNode(childNode, grandParent, offsetInParent);
}
}
}
if (NS_SUCCEEDED(result)) {
result = nsTextEditor::DeleteNode(blockParentElement);
}
}
}
result = nsTextEditor::GetBlockParent(startParent, getter_AddRefs(blockParentElement));
}
}
}
}
}
nsEditor::EndTransaction();
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::RemoveParent(const nsString &aParentTag)
{
if (gNoisy) {
printf("---------- nsHTMLEditor::RemoveParent %s----------\n", aParentTag);
}
nsresult result=NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
nsEditor::BeginTransaction();
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection);
if (enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode>commonParent;
result = range->GetCommonParent(getter_AddRefs(commonParent));
if ((NS_SUCCEEDED(result)) && commonParent)
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMNode> startParent; nsCOMPtr<nsIDOMNode> endParent;
range->GetStartParent(getter_AddRefs(startParent));
range->GetEndParent(getter_AddRefs(endParent));
if (startParent.get()==endParent.get())
{ // the range is entirely contained within a single node
nsCOMPtr<nsIDOMNode>parentNode;
nsCOMPtr<nsIDOMElement>parentElement;
result = startParent->GetParentNode(getter_AddRefs(parentNode));
while ((NS_SUCCEEDED(result)) && parentNode)
{
parentElement = do_QueryInterface(parentNode);
nsAutoString childTag; // leave as empty string
nsAutoString parentTag;
parentElement->GetTagName(parentTag);
PRBool canContain;
CanContainBlock(childTag, parentTag, canContain);
if (aParentTag.EqualsIgnoreCase(parentTag))
{
// go through list backwards so deletes don't interfere with the iteration
nsCOMPtr<nsIDOMNodeList> childNodes;
result = parentElement->GetChildNodes(getter_AddRefs(childNodes));
if ((NS_SUCCEEDED(result)) && (childNodes))
{
nsCOMPtr<nsIDOMNode>grandParent;
parentElement->GetParentNode(getter_AddRefs(grandParent));
PRInt32 offsetInParent;
result = nsIEditorSupport::GetChildOffset(parentElement, grandParent, offsetInParent);
PRUint32 childCount;
childNodes->GetLength(&childCount);
PRInt32 i=childCount-1;
for ( ; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
{
nsCOMPtr<nsIDOMNode> childNode;
result = childNodes->Item(i, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(result)) && (childNode))
{
result = nsTextEditor::DeleteNode(childNode);
if (NS_SUCCEEDED(result)) {
result = nsTextEditor::InsertNode(childNode, grandParent, offsetInParent);
}
}
}
if (NS_SUCCEEDED(result)) {
result = nsTextEditor::DeleteNode(parentElement);
}
}
break;
}
else if (PR_TRUE==canContain) { // hit a subdoc, terminate?
break;
}
result = parentElement->GetParentNode(getter_AddRefs(parentNode));
}
}
}
}
}
nsEditor::EndTransaction();
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::InsertLink(nsString& aURL)
{
nsresult res = nsEditor::BeginTransaction();
// Find out if the selection is collapsed:
nsCOMPtr<nsIDOMSelection> selection;
res = GetSelection(getter_AddRefs(selection));
if (!NS_SUCCEEDED(res) || !selection)
{
#ifdef DEBUG_akkana
printf("Can't get selection!");
#endif
return res;
}
PRBool isCollapsed;
res = selection->GetIsCollapsed(&isCollapsed);
if (!NS_SUCCEEDED(res))
isCollapsed = PR_TRUE;
// Temporary: we need to save the contents of the selection,
// then insert them back in as the child of the newly created
// anchor node in order to put the link around the selection.
// This will require copying the selection into a document fragment,
// then splicing the document fragment back into the tree after the
// new anchor node has been put in place. As a temporary solution,
// Copy/Paste does this for us in the text case
// (and eventually in all cases).
if (!isCollapsed)
(void)Copy();
nsCOMPtr<nsIDOMNode> newNode;
nsAutoString tag("A");
res = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
if (!NS_SUCCEEDED(res) || !newNode)
return res;
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor (do_QueryInterface(newNode));
if (!anchor)
{
#ifdef DEBUG_akkana
printf("Not an anchor element\n");
#endif
return NS_NOINTERFACE;
}
res = anchor->SetHref(aURL);
if (!NS_SUCCEEDED(res))
{
#ifdef DEBUG_akkana
printf("SetHref failed");
#endif
return res;
}
// Set the selection to the node we just inserted:
res = GetSelection(getter_AddRefs(selection));
if (!NS_SUCCEEDED(res) || !selection)
{
#ifdef DEBUG_akkana
printf("Can't get selection!");
#endif
return res;
}
res = selection->Collapse(newNode, 0);
if (!NS_SUCCEEDED(res))
{
#ifdef DEBUG_akkana
printf("Couldn't collapse");
#endif
return res;
}
// If we weren't collapsed, paste the old selection back in under the link:
if (!isCollapsed)
(void)Paste();
// Otherwise (we were collapsed) insert some bogus text in
// so the link will be visible
else
{
nsString link("[***]");
(void) InsertText(link); // ignore return value -- we don't care
}
nsEditor::EndTransaction(); // don't return this result!
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditor::InsertImage(nsString& aURL,
nsString& aWidth, nsString& aHeight,
nsString& aHspace, nsString& aVspace,
nsString& aBorder,
nsString& aAlt,
nsString& aAlignment)
{
nsresult res;
(void)nsEditor::BeginTransaction();
nsCOMPtr<nsIDOMNode> newNode;
nsAutoString tag("IMG");
res = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
if (!NS_SUCCEEDED(res) || !newNode)
{
(void)nsEditor::EndTransaction();
return res;
}
nsCOMPtr<nsIDOMHTMLImageElement> image (do_QueryInterface(newNode));
if (!image)
{
#ifdef DEBUG_akkana
printf("Not an image element\n");
#endif
(void)nsEditor::EndTransaction();
return NS_NOINTERFACE;
}
// Can't return from any of these intermediates
// because then we won't hit the EndTransaction()
if (NS_SUCCEEDED(res = image->SetSrc(aURL)))
if (NS_SUCCEEDED(res = image->SetWidth(aWidth)))
if (NS_SUCCEEDED(res = image->SetHeight(aHeight)))
if (NS_SUCCEEDED(res = image->SetAlt(aAlt)))
if (NS_SUCCEEDED(res = image->SetBorder(aBorder)))
if (NS_SUCCEEDED(res = image->SetAlign(aAlignment)))
if (NS_SUCCEEDED(res = image->SetHspace(aHspace)))
if (NS_SUCCEEDED(res = image->SetVspace(aVspace)))
;
(void)nsEditor::EndTransaction(); // don't return this result!
return res;
}
// This should replace InsertLink and InsertImage once it is working
NS_IMETHODIMP
nsHTMLEditor::GetSelectedElement(const nsString& aTagName, nsIDOMElement** aReturn)
{
if (!aReturn )
return NS_ERROR_NULL_POINTER;
*aReturn = nsnull;
nsAutoString TagName = aTagName;
TagName.ToLowerCase();
//Note that this doesn't need to go through the transaction system
nsresult result=NS_ERROR_NOT_INITIALIZED;
PRBool first=PR_TRUE;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if (!NS_SUCCEEDED(result) || !selection)
return result;
PRBool isCollapsed;
selection->GetIsCollapsed(&isCollapsed);
nsCOMPtr<nsIDOMElement> selectedElement;
PRBool bNodeFound = PR_FALSE;
// Don't bother to examine selection if it is collapsed
if (!isCollapsed)
{
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection);
if (enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && currentItem)
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIContentIterator> iter;
result = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
kIContentIteratorIID,
getter_AddRefs(iter));
if ((NS_SUCCEEDED(result)) && iter)
{
iter->Init(range);
// loop through the content iterator for each content node
nsCOMPtr<nsIContent> content;
result = iter->CurrentNode(getter_AddRefs(content));
PRBool bOtherNodeTypeFound = PR_FALSE;
while (NS_COMFALSE == iter->IsDone())
{
// Query interface to cast nsIContent to nsIDOMNode
// then get tagType to compare to aTagName
// Clone node of each desired type and append it to the aDomFrag
selectedElement = do_QueryInterface(content);
if (selectedElement)
{
// If we already found a node, then we have another element,
// so don't return an element
if (bNodeFound)
{
bNodeFound;
break;
}
nsAutoString domTagName;
selectedElement->GetNodeName(domTagName);
// The "A" tag is a pain,
// used for both link(href is set) and "Named Anchor"
if (aTagName == "HREF" || (aTagName == "ANCHOR"))
{
// We could use GetAttribute, but might as well use anchor element directly
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(selectedElement);
if (anchor)
{
nsString tmpText;
if( aTagName == "HREF")
{
if (NS_SUCCEEDED(anchor->GetHref(tmpText)) && tmpText.GetUnicode() && tmpText.Length() != 0)
bNodeFound = PR_TRUE;
} else if (aTagName == "ANCHOR")
{
if (NS_SUCCEEDED(anchor->GetName(tmpText)) && tmpText.GetUnicode() && tmpText.Length() != 0)
bNodeFound = PR_TRUE;
}
}
} else if (aTagName == domTagName) { // All other tag names are handled here
bNodeFound = PR_TRUE;
}
if (!bNodeFound)
{
// Check if node we have is really part of the selection???
break;
}
}
iter->Next();
}
if (!bNodeFound)
printf("No nodes of tag name = %s were found in selection\n", aTagName);
}
} else {
// Should never get here?
isCollapsed = PR_TRUE;
printf("isCollapsed was FALSE, but no elements found in selection\n");
}
} else {
printf("Could not create enumerator for GetSelectionProperties\n");
}
}
if (bNodeFound)
{
*aReturn = selectedElement;
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::CreateElementWithDefaults(const nsString& aTagName, nsIDOMElement** aReturn)
{
nsresult result=NS_ERROR_NOT_INITIALIZED;
if (aReturn)
*aReturn = nsnull;
if (aTagName == "" || !aReturn)
return NS_ERROR_NULL_POINTER;
nsAutoString TagName = aTagName;
TagName.ToLowerCase();
nsAutoString realTagName;
PRBool isHREF = (TagName == "href");
PRBool isAnchor = (TagName == "anchor");
if (isHREF || isAnchor)
{
realTagName = "a";
} else {
realTagName = TagName;
}
//We don't use editor's CreateElement because we don't want to
// go through the transaction system
nsCOMPtr<nsIDOMElement>newElement;
result = mDoc->CreateElement(realTagName, getter_AddRefs(newElement));
if (!NS_SUCCEEDED(result) || !newElement)
return NS_ERROR_FAILURE;
// Set default values for new elements
// SHOULD THIS BE PUT IN "RULES" SYSTEM OR
// ATTRIBUTES SAVED IN PREFS?
if (isAnchor)
{
// TODO: Get the text of the selection and build a suggested Name
// Replace spaces with "_"
}
// ADD OTHER DEFAULT ATTRIBUTES HERE
if (NS_SUCCEEDED(result))
{
*aReturn = newElement; //do_QueryInterface(newElement);
}
return result;
}
NS_IMETHODIMP
nsHTMLEditor::InsertElement(nsIDOMElement* aElement, PRBool aDeleteSelection, nsIDOMElement** aReturn)
{
nsresult result=NS_ERROR_NOT_INITIALIZED;
if (aReturn)
*aReturn = nsnull;
if (!aElement || !aReturn)
return NS_ERROR_NULL_POINTER;
result = nsEditor::BeginTransaction();
if (NS_FAILED(result))
return result;
nsCOMPtr<nsIDOMNode> parentSelectedNode;
PRInt32 offsetOfNewNode;
DeleteSelectionAndPrepareToCreateNode(parentSelectedNode, offsetOfNewNode);
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode> newNode = do_QueryInterface(aElement);
result = InsertNode(aElement, parentSelectedNode, offsetOfNewNode);
}
(void)nsEditor::EndTransaction();
return result;
}
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