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pjs/editor/libeditor/html/nsHTMLDataTransfer.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsHTMLEditor.h"
#include "nsHTMLEditRules.h"
#include "nsTextEditUtils.h"
#include "nsHTMLEditUtils.h"
#include "nsWSRunObject.h"
#include "nsIDOMText.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMAttr.h"
#include "nsIDocument.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMNSEvent.h"
#include "nsIDOMKeyEvent.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMMouseEvent.h"
#include "nsIDOMComment.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsISelectionController.h"
#include "nsIFileChannel.h"
#include "nsIDocumentObserver.h"
#include "nsIDocumentStateListener.h"
#include "nsIEnumerator.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsIDOMRange.h"
#include "nsIDOMNSRange.h"
#include "nsCOMArray.h"
#include "nsIFile.h"
#include "nsIURL.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIDocumentEncoder.h"
#include "nsIDOMDocumentFragment.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIParser.h"
#include "nsParserCIID.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsLinebreakConverter.h"
#include "nsIFragmentContentSink.h"
#include "nsIContentSink.h"
// netwerk
#include "nsIURI.h"
#include "nsNetUtil.h"
// Drag & Drop, Clipboard
#include "nsIClipboard.h"
#include "nsITransferable.h"
#include "nsIDragService.h"
#include "nsIDOMNSUIEvent.h"
#include "nsIOutputStream.h"
#include "nsIInputStream.h"
#include "nsDirectoryServiceDefs.h"
// for relativization
#include "nsUnicharUtils.h"
#include "nsIDOMDocumentTraversal.h"
#include "nsIDOMTreeWalker.h"
#include "nsIDOMNodeFilter.h"
#include "nsIDOMNamedNodeMap.h"
#include "nsIDOMHTMLLinkElement.h"
#include "nsIDOMHTMLObjectElement.h"
#include "nsIDOMHTMLFrameElement.h"
#include "nsIDOMHTMLIFrameElement.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIDOMHTMLScriptElement.h"
#include "nsIDOMHTMLEmbedElement.h"
#include "nsIDOMHTMLTableCellElement.h"
#include "nsIDOMHTMLTableRowElement.h"
#include "nsIDOMHTMLTableElement.h"
#include "nsIDOMHTMLBodyElement.h"
// Misc
#include "TextEditorTest.h"
#include "nsEditorUtils.h"
#include "nsIPrefBranch.h"
#include "nsIPrefService.h"
#include "nsIContentFilter.h"
#include "nsEventDispatcher.h"
const PRUnichar nbsp = 160;
static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
// private clipboard data flavors for html copy/paste
#define kHTMLContext "text/_moz_htmlcontext"
#define kHTMLInfo "text/_moz_htmlinfo"
#define kInsertCookie "_moz_Insert Here_moz_"
#define NS_FOUND_TARGET NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR, 3)
// some little helpers
static PRInt32 FindPositiveIntegerAfterString(const char *aLeadingString, nsCString &aCStr);
static nsresult RemoveFragComments(nsCString &theStr);
static void RemoveBodyAndHead(nsIDOMNode *aNode);
static nsresult FindTargetNode(nsIDOMNode *aStart, nsCOMPtr<nsIDOMNode> &aResult);
static nsCOMPtr<nsIDOMNode> GetListParent(nsIDOMNode* aNode)
{
if (!aNode) return nsnull;
nsCOMPtr<nsIDOMNode> parent, tmp;
aNode->GetParentNode(getter_AddRefs(parent));
while (parent)
{
if (nsHTMLEditUtils::IsList(parent)) return parent;
parent->GetParentNode(getter_AddRefs(tmp));
parent = tmp;
}
return nsnull;
}
static nsCOMPtr<nsIDOMNode> GetTableParent(nsIDOMNode* aNode)
{
if (!aNode) return nsnull;
nsCOMPtr<nsIDOMNode> parent, tmp;
aNode->GetParentNode(getter_AddRefs(parent));
while (parent)
{
if (nsHTMLEditUtils::IsTable(parent)) return parent;
parent->GetParentNode(getter_AddRefs(tmp));
parent = tmp;
}
return nsnull;
}
NS_IMETHODIMP nsHTMLEditor::LoadHTML(const nsAString & aInputString)
{
if (!mRules) return NS_ERROR_NOT_INITIALIZED;
// force IME commit; set up rules sniffing and batching
ForceCompositionEnd();
nsAutoEditBatch beginBatching(this);
nsAutoRules beginRulesSniffing(this, kOpLoadHTML, nsIEditor::eNext);
// Get selection
nsCOMPtr<nsISelection>selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
nsTextRulesInfo ruleInfo(nsTextEditRules::kLoadHTML);
PRBool cancel, handled;
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (cancel) return NS_OK; // rules canceled the operation
if (!handled)
{
PRBool isCollapsed;
res = selection->GetIsCollapsed(&isCollapsed);
if (NS_FAILED(res)) return res;
// Delete Selection, but only if it isn't collapsed, see bug #106269
if (!isCollapsed)
{
res = DeleteSelection(eNone);
if (NS_FAILED(res)) return res;
}
// Get the first range in the selection, for context:
nsCOMPtr<nsIDOMRange> range;
res = selection->GetRangeAt(0, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
if (!range)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNSRange> nsrange (do_QueryInterface(range));
if (!nsrange)
return NS_ERROR_NO_INTERFACE;
// create fragment for pasted html
nsCOMPtr<nsIDOMDocumentFragment> docfrag;
{
res = nsrange->CreateContextualFragment(aInputString, getter_AddRefs(docfrag));
NS_ENSURE_SUCCESS(res, res);
}
// put the fragment into the document
nsCOMPtr<nsIDOMNode> parent, junk;
res = range->GetStartContainer(getter_AddRefs(parent));
NS_ENSURE_SUCCESS(res, res);
if (!parent)
return NS_ERROR_NULL_POINTER;
PRInt32 childOffset;
res = range->GetStartOffset(&childOffset);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNode> nodeToInsert;
docfrag->GetFirstChild(getter_AddRefs(nodeToInsert));
while (nodeToInsert)
{
res = InsertNode(nodeToInsert, parent, childOffset++);
NS_ENSURE_SUCCESS(res, res);
docfrag->GetFirstChild(getter_AddRefs(nodeToInsert));
}
}
return mRules->DidDoAction(selection, &ruleInfo, res);
}
NS_IMETHODIMP nsHTMLEditor::InsertHTML(const nsAString & aInString)
{
const nsAFlatString& empty = EmptyString();
return InsertHTMLWithContext(aInString, empty, empty, empty,
nsnull, nsnull, 0, PR_TRUE);
}
nsresult
nsHTMLEditor::InsertHTMLWithContext(const nsAString & aInputString,
const nsAString & aContextStr,
const nsAString & aInfoStr,
const nsAString & aFlavor,
nsIDOMDocument *aSourceDoc,
nsIDOMNode *aDestNode,
PRInt32 aDestOffset,
PRBool aDeleteSelection)
{
if (!mRules) return NS_ERROR_NOT_INITIALIZED;
// force IME commit; set up rules sniffing and batching
ForceCompositionEnd();
nsAutoEditBatch beginBatching(this);
nsAutoRules beginRulesSniffing(this, kOpHTMLPaste, nsIEditor::eNext);
// Get selection
nsresult res;
nsCOMPtr<nsISelection>selection;
res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
// create a dom document fragment that represents the structure to paste
nsCOMPtr<nsIDOMNode> fragmentAsNode, streamStartParent, streamEndParent;
PRInt32 streamStartOffset = 0, streamEndOffset = 0;
res = CreateDOMFragmentFromPaste(aInputString, aContextStr, aInfoStr,
address_of(fragmentAsNode),
address_of(streamStartParent),
address_of(streamEndParent),
&streamStartOffset,
&streamEndOffset);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNode> targetNode, tempNode;
PRInt32 targetOffset=0;
if (!aDestNode)
{
// if caller didn't provide the destination/target node,
// fetch the paste insertion point from our selection
res = GetStartNodeAndOffset(selection, address_of(targetNode), &targetOffset);
if (!targetNode) res = NS_ERROR_FAILURE;
if (NS_FAILED(res)) return res;
}
else
{
targetNode = aDestNode;
targetOffset = aDestOffset;
}
PRBool doContinue = PR_TRUE;
res = DoContentFilterCallback(aFlavor, aSourceDoc, aDeleteSelection,
(nsIDOMNode **)address_of(fragmentAsNode),
(nsIDOMNode **)address_of(streamStartParent),
&streamStartOffset,
(nsIDOMNode **)address_of(streamEndParent),
&streamEndOffset,
(nsIDOMNode **)address_of(targetNode),
&targetOffset, &doContinue);
NS_ENSURE_SUCCESS(res, res);
if (!doContinue)
return NS_OK;
// if we have a destination / target node, we want to insert there
// rather than in place of the selection
// ignore aDeleteSelection here if no aDestNode since deletion will
// also occur later; this block is intended to cover the various
// scenarios where we are dropping in an editor (and may want to delete
// the selection before collapsing the selection in the new destination)
if (aDestNode)
{
if (aDeleteSelection)
{
// Use an auto tracker so that our drop point is correctly
// positioned after the delete.
nsAutoTrackDOMPoint tracker(mRangeUpdater, &targetNode, &targetOffset);
res = DeleteSelection(eNone);
NS_ENSURE_SUCCESS(res, res);
}
res = selection->Collapse(targetNode, targetOffset);
NS_ENSURE_SUCCESS(res, res);
}
// we need to recalculate various things based on potentially new offsets
// this is work to be completed at a later date (probably by jfrancis)
// make a list of what nodes in docFrag we need to move
nsCOMArray<nsIDOMNode> nodeList;
res = CreateListOfNodesToPaste(fragmentAsNode, nodeList,
streamStartParent, streamStartOffset,
streamEndParent, streamEndOffset);
NS_ENSURE_SUCCESS(res, res);
if (nodeList.Count() == 0)
return NS_OK;
// walk list of nodes; perform surgery on nodes (relativize) with _mozattr
res = RelativizeURIInFragmentList(nodeList, aFlavor, aSourceDoc, targetNode);
// ignore results from this call, try to paste/insert anyways
// are there any table elements in the list?
// node and offset for insertion
nsCOMPtr<nsIDOMNode> parentNode;
PRInt32 offsetOfNewNode;
// check for table cell selection mode
PRBool cellSelectionMode = PR_FALSE;
nsCOMPtr<nsIDOMElement> cell;
res = GetFirstSelectedCell(nsnull, getter_AddRefs(cell));
if (NS_SUCCEEDED(res) && cell)
{
cellSelectionMode = PR_TRUE;
}
if (cellSelectionMode)
{
// do we have table content to paste? If so, we want to delete
// the selected table cells and replace with new table elements;
// but if not we want to delete _contents_ of cells and replace
// with non-table elements. Use cellSelectionMode bool to
// indicate results.
nsIDOMNode* firstNode = nodeList[0];
if (!nsHTMLEditUtils::IsTableElement(firstNode))
cellSelectionMode = PR_FALSE;
}
if (!cellSelectionMode)
{
res = DeleteSelectionAndPrepareToCreateNode(parentNode, offsetOfNewNode);
NS_ENSURE_SUCCESS(res, res);
// pasting does not inherit local inline styles
res = RemoveAllInlineProperties();
NS_ENSURE_SUCCESS(res, res);
}
else
{
// delete whole cells: we will replace with new table content
if (1)
{
// Save current selection since DeleteTableCell perturbs it
nsAutoSelectionReset selectionResetter(selection, this);
res = DeleteTableCell(1);
NS_ENSURE_SUCCESS(res, res);
}
// collapse selection to beginning of deleted table content
selection->CollapseToStart();
}
// give rules a chance to handle or cancel
nsTextRulesInfo ruleInfo(nsTextEditRules::kInsertElement);
PRBool cancel, handled;
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (cancel) return NS_OK; // rules canceled the operation
if (!handled)
{
// The rules code (WillDoAction above) might have changed the selection.
// refresh our memory...
res = GetStartNodeAndOffset(selection, address_of(parentNode), &offsetOfNewNode);
if (!parentNode) res = NS_ERROR_FAILURE;
if (NS_FAILED(res)) return res;
// Adjust position based on the first node we are going to insert.
NormalizeEOLInsertPosition(nodeList[0], address_of(parentNode), &offsetOfNewNode);
// if there are any invisible br's after our insertion point, remove them.
// this is because if there is a br at end of what we paste, it will make
// the invisible br visible.
nsWSRunObject wsObj(this, parentNode, offsetOfNewNode);
if (nsTextEditUtils::IsBreak(wsObj.mEndReasonNode) &&
!IsVisBreak(wsObj.mEndReasonNode) )
{
res = DeleteNode(wsObj.mEndReasonNode);
if (NS_FAILED(res)) return res;
}
// remeber if we are in a link.
PRBool bStartedInLink = IsInLink(parentNode);
// are we in a text node? If so, split it.
if (IsTextNode(parentNode))
{
nsCOMPtr<nsIDOMNode> temp;
res = SplitNodeDeep(parentNode, parentNode, offsetOfNewNode, &offsetOfNewNode);
if (NS_FAILED(res)) return res;
res = parentNode->GetParentNode(getter_AddRefs(temp));
if (NS_FAILED(res)) return res;
parentNode = temp;
}
// build up list of parents of first node in list that are either
// lists or tables. First examine front of paste node list.
nsCOMArray<nsIDOMNode> startListAndTableArray;
res = GetListAndTableParents(PR_FALSE, nodeList, startListAndTableArray);
NS_ENSURE_SUCCESS(res, res);
// remember number of lists and tables above us
PRInt32 highWaterMark = -1;
if (startListAndTableArray.Count() > 0)
{
res = DiscoverPartialListsAndTables(nodeList, startListAndTableArray, &highWaterMark);
NS_ENSURE_SUCCESS(res, res);
}
// if we have pieces of tables or lists to be inserted, let's force the paste
// to deal with table elements right away, so that it doesn't orphan some
// table or list contents outside the table or list.
if (highWaterMark >= 0)
{
res = ReplaceOrphanedStructure(PR_FALSE, nodeList, startListAndTableArray, highWaterMark);
NS_ENSURE_SUCCESS(res, res);
}
// Now go through the same process again for the end of the paste node list.
nsCOMArray<nsIDOMNode> endListAndTableArray;
res = GetListAndTableParents(PR_TRUE, nodeList, endListAndTableArray);
NS_ENSURE_SUCCESS(res, res);
highWaterMark = -1;
// remember number of lists and tables above us
if (endListAndTableArray.Count() > 0)
{
res = DiscoverPartialListsAndTables(nodeList, endListAndTableArray, &highWaterMark);
NS_ENSURE_SUCCESS(res, res);
}
// don't orphan partial list or table structure
if (highWaterMark >= 0)
{
res = ReplaceOrphanedStructure(PR_TRUE, nodeList, endListAndTableArray, highWaterMark);
NS_ENSURE_SUCCESS(res, res);
}
// Loop over the node list and paste the nodes:
nsCOMPtr<nsIDOMNode> parentBlock, lastInsertNode, insertedContextParent;
PRInt32 listCount = nodeList.Count();
PRInt32 j;
if (IsBlockNode(parentNode))
parentBlock = parentNode;
else
parentBlock = GetBlockNodeParent(parentNode);
for (j=0; j<listCount; j++)
{
PRBool bDidInsert = PR_FALSE;
nsCOMPtr<nsIDOMNode> curNode = nodeList[j];
NS_ENSURE_TRUE(curNode, NS_ERROR_FAILURE);
NS_ENSURE_TRUE(curNode != fragmentAsNode, NS_ERROR_FAILURE);
NS_ENSURE_TRUE(!nsTextEditUtils::IsBody(curNode), NS_ERROR_FAILURE);
if (insertedContextParent)
{
// if we had to insert something higher up in the paste hierarchy, we want to
// skip any further paste nodes that descend from that. Else we will paste twice.
if (nsEditorUtils::IsDescendantOf(curNode, insertedContextParent))
continue;
}
// give the user a hand on table element insertion. if they have
// a table or table row on the clipboard, and are trying to insert
// into a table or table row, insert the appropriate children instead.
if ( (nsHTMLEditUtils::IsTableRow(curNode) && nsHTMLEditUtils::IsTableRow(parentNode))
&& (nsHTMLEditUtils::IsTable(curNode) || nsHTMLEditUtils::IsTable(parentNode)) )
{
nsCOMPtr<nsIDOMNode> child;
curNode->GetFirstChild(getter_AddRefs(child));
while (child)
{
res = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, PR_TRUE);
if (NS_FAILED(res))
break;
bDidInsert = PR_TRUE;
lastInsertNode = child;
offsetOfNewNode++;
curNode->GetFirstChild(getter_AddRefs(child));
}
}
// give the user a hand on list insertion. if they have
// a list on the clipboard, and are trying to insert
// into a list or list item, insert the appropriate children instead,
// ie, merge the lists instead of pasting in a sublist.
else if (nsHTMLEditUtils::IsList(curNode) &&
(nsHTMLEditUtils::IsList(parentNode) || nsHTMLEditUtils::IsListItem(parentNode)) )
{
nsCOMPtr<nsIDOMNode> child, tmp;
curNode->GetFirstChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child) || nsHTMLEditUtils::IsList(child))
{
// check if we are pasting into empty list item. If so
// delete it and paste into parent list instead.
if (nsHTMLEditUtils::IsListItem(parentNode))
{
PRBool isEmpty;
res = IsEmptyNode(parentNode, &isEmpty, PR_TRUE);
if ((NS_SUCCEEDED(res)) && isEmpty)
{
nsCOMPtr<nsIDOMNode> listNode;
PRInt32 newOffset;
GetNodeLocation(parentNode, address_of(listNode), &newOffset);
if (listNode)
{
DeleteNode(parentNode);
parentNode = listNode;
offsetOfNewNode = newOffset;
}
}
}
res = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, PR_TRUE);
if (NS_FAILED(res))
break;
bDidInsert = PR_TRUE;
lastInsertNode = child;
offsetOfNewNode++;
}
else
{
curNode->RemoveChild(child, getter_AddRefs(tmp));
}
curNode->GetFirstChild(getter_AddRefs(child));
}
}
// check for pre's going into pre's.
else if (nsHTMLEditUtils::IsPre(parentBlock) && nsHTMLEditUtils::IsPre(curNode))
{
nsCOMPtr<nsIDOMNode> child, tmp;
curNode->GetFirstChild(getter_AddRefs(child));
while (child)
{
res = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, PR_TRUE);
if (NS_FAILED(res))
break;
bDidInsert = PR_TRUE;
lastInsertNode = child;
offsetOfNewNode++;
curNode->GetFirstChild(getter_AddRefs(child));
}
}
if (!bDidInsert || NS_FAILED(res))
{
// try to insert
res = InsertNodeAtPoint(curNode, address_of(parentNode), &offsetOfNewNode, PR_TRUE);
if (NS_SUCCEEDED(res))
{
bDidInsert = PR_TRUE;
lastInsertNode = curNode;
}
// Assume failure means no legal parent in the document hierarchy,
// try again with the parent of curNode in the paste hierarchy.
nsCOMPtr<nsIDOMNode> parent;
while (NS_FAILED(res) && curNode)
{
curNode->GetParentNode(getter_AddRefs(parent));
if (parent && !nsTextEditUtils::IsBody(parent))
{
res = InsertNodeAtPoint(parent, address_of(parentNode), &offsetOfNewNode, PR_TRUE);
if (NS_SUCCEEDED(res))
{
bDidInsert = PR_TRUE;
insertedContextParent = parent;
lastInsertNode = parent;
}
}
curNode = parent;
}
}
if (lastInsertNode)
{
res = GetNodeLocation(lastInsertNode, address_of(parentNode), &offsetOfNewNode);
NS_ENSURE_SUCCESS(res, res);
offsetOfNewNode++;
}
}
// Now collapse the selection to the end of what we just inserted:
if (lastInsertNode)
{
// set selection to the end of what we just pasted.
nsCOMPtr<nsIDOMNode> selNode, tmp, visNode, highTable;
PRInt32 selOffset;
// but don't cross tables
if (!nsHTMLEditUtils::IsTable(lastInsertNode))
{
res = GetLastEditableLeaf(lastInsertNode, address_of(selNode));
if (NS_FAILED(res)) return res;
tmp = selNode;
while (tmp && (tmp != lastInsertNode))
{
if (nsHTMLEditUtils::IsTable(tmp))
highTable = tmp;
nsCOMPtr<nsIDOMNode> parent = tmp;
tmp->GetParentNode(getter_AddRefs(parent));
tmp = parent;
}
if (highTable)
selNode = highTable;
}
if (!selNode)
selNode = lastInsertNode;
if (IsTextNode(selNode) || (IsContainer(selNode) && !nsHTMLEditUtils::IsTable(selNode)))
{
res = GetLengthOfDOMNode(selNode, (PRUint32&)selOffset);
if (NS_FAILED(res)) return res;
}
else // we need to find a container for selection. Look up.
{
tmp = selNode;
res = GetNodeLocation(tmp, address_of(selNode), &selOffset);
++selOffset; // want to be *after* last leaf node in paste
if (NS_FAILED(res)) return res;
}
// make sure we don't end up with selection collapsed after an invisible break node
nsWSRunObject wsRunObj(this, selNode, selOffset);
PRInt32 outVisOffset=0;
PRInt16 visType=0;
res = wsRunObj.PriorVisibleNode(selNode, selOffset, address_of(visNode), &outVisOffset, &visType);
if (NS_FAILED(res)) return res;
if (visType == nsWSRunObject::eBreak)
{
// we are after a break. Is it visible? Despite the name,
// PriorVisibleNode does not make that determination for breaks.
// It also may not return the break in visNode. We have to pull it
// out of the nsWSRunObject's state.
if (!IsVisBreak(wsRunObj.mStartReasonNode))
{
// don't leave selection past an invisible break;
// reset {selNode,selOffset} to point before break
res = GetNodeLocation(wsRunObj.mStartReasonNode, address_of(selNode), &selOffset);
// we want to be inside any inline style prior to break
nsWSRunObject wsRunObj(this, selNode, selOffset);
res = wsRunObj.PriorVisibleNode(selNode, selOffset, address_of(visNode), &outVisOffset, &visType);
if (NS_FAILED(res)) return res;
if (visType == nsWSRunObject::eText ||
visType == nsWSRunObject::eNormalWS)
{
selNode = visNode;
selOffset = outVisOffset; // PriorVisibleNode already set offset to _after_ the text or ws
}
else if (visType == nsWSRunObject::eSpecial)
{
// prior visible thing is an image or some other non-text thingy.
// We want to be right after it.
res = GetNodeLocation(wsRunObj.mStartReasonNode, address_of(selNode), &selOffset);
++selOffset;
}
}
}
selection->Collapse(selNode, selOffset);
// if we just pasted a link, discontinue link style
nsCOMPtr<nsIDOMNode> link;
if (!bStartedInLink && IsInLink(selNode, address_of(link)))
{
// so, if we just pasted a link, I split it. Why do that instead of just
// nudging selection point beyond it? Because it might have ended in a BR
// that is not visible. If so, the code above just placed selection
// inside that. So I split it instead.
nsCOMPtr<nsIDOMNode> leftLink;
PRInt32 linkOffset;
res = SplitNodeDeep(link, selNode, selOffset, &linkOffset, PR_TRUE, address_of(leftLink));
if (NS_FAILED(res)) return res;
res = GetNodeLocation(leftLink, address_of(selNode), &selOffset);
if (NS_FAILED(res)) return res;
selection->Collapse(selNode, selOffset+1);
}
}
}
res = mRules->DidDoAction(selection, &ruleInfo, res);
return res;
}
// returns empty string if nothing to modify on node
nsresult
nsHTMLEditor::GetAttributeToModifyOnNode(nsIDOMNode *aNode, nsAString &aAttr)
{
aAttr.Truncate();
NS_NAMED_LITERAL_STRING(srcStr, "src");
nsCOMPtr<nsIDOMHTMLImageElement> nodeAsImage = do_QueryInterface(aNode);
if (nodeAsImage)
{
aAttr = srcStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLAnchorElement> nodeAsAnchor = do_QueryInterface(aNode);
if (nodeAsAnchor)
{
aAttr.AssignLiteral("href");
return NS_OK;
}
NS_NAMED_LITERAL_STRING(bgStr, "background");
nsCOMPtr<nsIDOMHTMLBodyElement> nodeAsBody = do_QueryInterface(aNode);
if (nodeAsBody)
{
aAttr = bgStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLTableElement> nodeAsTable = do_QueryInterface(aNode);
if (nodeAsTable)
{
aAttr = bgStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLTableRowElement> nodeAsTableRow = do_QueryInterface(aNode);
if (nodeAsTableRow)
{
aAttr = bgStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLTableCellElement> nodeAsTableCell = do_QueryInterface(aNode);
if (nodeAsTableCell)
{
aAttr = bgStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLScriptElement> nodeAsScript = do_QueryInterface(aNode);
if (nodeAsScript)
{
aAttr = srcStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLEmbedElement> nodeAsEmbed = do_QueryInterface(aNode);
if (nodeAsEmbed)
{
aAttr = srcStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLObjectElement> nodeAsObject = do_QueryInterface(aNode);
if (nodeAsObject)
{
aAttr.AssignLiteral("data");
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLLinkElement> nodeAsLink = do_QueryInterface(aNode);
if (nodeAsLink)
{
// Test if the link has a rel value indicating it to be a stylesheet
nsAutoString linkRel;
if (NS_SUCCEEDED(nodeAsLink->GetRel(linkRel)) && !linkRel.IsEmpty())
{
nsReadingIterator<PRUnichar> start;
nsReadingIterator<PRUnichar> end;
nsReadingIterator<PRUnichar> current;
linkRel.BeginReading(start);
linkRel.EndReading(end);
// Walk through space delimited string looking for "stylesheet"
for (current = start; current != end; ++current)
{
// Ignore whitespace
if (nsCRT::IsAsciiSpace(*current))
continue;
// Grab the next space delimited word
nsReadingIterator<PRUnichar> startWord = current;
do {
++current;
} while (current != end && !nsCRT::IsAsciiSpace(*current));
// Store the link for fix up if it says "stylesheet"
if (Substring(startWord, current).LowerCaseEqualsLiteral("stylesheet"))
{
aAttr.AssignLiteral("href");
return NS_OK;
}
if (current == end)
break;
}
}
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLFrameElement> nodeAsFrame = do_QueryInterface(aNode);
if (nodeAsFrame)
{
aAttr = srcStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLIFrameElement> nodeAsIFrame = do_QueryInterface(aNode);
if (nodeAsIFrame)
{
aAttr = srcStr;
return NS_OK;
}
nsCOMPtr<nsIDOMHTMLInputElement> nodeAsInput = do_QueryInterface(aNode);
if (nodeAsInput)
{
aAttr = srcStr;
return NS_OK;
}
return NS_OK;
}
nsresult
nsHTMLEditor::RelativizeURIForNode(nsIDOMNode *aNode, nsIURL *aDestURL)
{
nsAutoString attributeToModify;
GetAttributeToModifyOnNode(aNode, attributeToModify);
if (attributeToModify.IsEmpty())
return NS_OK;
nsCOMPtr<nsIDOMNamedNodeMap> attrMap;
nsresult rv = aNode->GetAttributes(getter_AddRefs(attrMap));
NS_ENSURE_SUCCESS(rv, NS_OK);
if (!attrMap) return NS_OK; // assume errors here shouldn't cancel insertion
nsCOMPtr<nsIDOMNode> attrNode;
rv = attrMap->GetNamedItem(attributeToModify, getter_AddRefs(attrNode));
NS_ENSURE_SUCCESS(rv, NS_OK); // assume errors here shouldn't cancel insertion
if (attrNode)
{
nsAutoString oldValue;
attrNode->GetNodeValue(oldValue);
if (!oldValue.IsEmpty())
{
NS_ConvertUTF16toUTF8 oldCValue(oldValue);
nsCOMPtr<nsIURI> currentNodeURI;
rv = NS_NewURI(getter_AddRefs(currentNodeURI), oldCValue);
if (NS_SUCCEEDED(rv))
{
nsCAutoString newRelativePath;
aDestURL->GetRelativeSpec(currentNodeURI, newRelativePath);
if (!newRelativePath.IsEmpty())
{
NS_ConvertUTF8toUTF16 newCValue(newRelativePath);
attrNode->SetNodeValue(newCValue);
}
}
}
}
return NS_OK;
}
nsresult
nsHTMLEditor::RelativizeURIInFragmentList(const nsCOMArray<nsIDOMNode> &aNodeList,
const nsAString &aFlavor,
nsIDOMDocument *aSourceDoc,
nsIDOMNode *aTargetNode)
{
// determine destination URL
nsCOMPtr<nsIDOMDocument> domDoc;
GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> destDoc = do_QueryInterface(domDoc);
if (!destDoc) return NS_ERROR_FAILURE;
nsCOMPtr<nsIURL> destURL = do_QueryInterface(destDoc->GetDocumentURI());
if (!destURL) return NS_ERROR_FAILURE;
// brade: eventually should look for a base url in the document if present
nsresult rv;
nsCOMPtr<nsIDOMDocumentTraversal> trav = do_QueryInterface(domDoc, &rv);
NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE);
PRInt32 listCount = aNodeList.Count();
PRInt32 j;
for (j = 0; j < listCount; j++)
{
nsIDOMNode* somenode = aNodeList[j];
nsCOMPtr<nsIDOMTreeWalker> walker;
rv = trav->CreateTreeWalker(somenode, nsIDOMNodeFilter::SHOW_ELEMENT,
nsnull, PR_TRUE, getter_AddRefs(walker));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> currentNode;
walker->GetCurrentNode(getter_AddRefs(currentNode));
while (currentNode)
{
rv = RelativizeURIForNode(currentNode, destURL);
NS_ENSURE_SUCCESS(rv, rv);
walker->NextNode(getter_AddRefs(currentNode));
}
}
return NS_OK;
}
nsresult
nsHTMLEditor::AddInsertionListener(nsIContentFilter *aListener)
{
if (!aListener)
return NS_ERROR_NULL_POINTER;
// don't let a listener be added more than once
if (mContentFilters.IndexOfObject(aListener) == -1)
{
if (!mContentFilters.AppendObject(aListener))
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
nsHTMLEditor::RemoveInsertionListener(nsIContentFilter *aListener)
{
if (!aListener)
return NS_ERROR_FAILURE;
if (!mContentFilters.RemoveObject(aListener))
return NS_ERROR_FAILURE;
return NS_OK;
}
nsresult
nsHTMLEditor::DoContentFilterCallback(const nsAString &aFlavor,
nsIDOMDocument *sourceDoc,
PRBool aWillDeleteSelection,
nsIDOMNode **aFragmentAsNode,
nsIDOMNode **aFragStartNode,
PRInt32 *aFragStartOffset,
nsIDOMNode **aFragEndNode,
PRInt32 *aFragEndOffset,
nsIDOMNode **aTargetNode,
PRInt32 *aTargetOffset,
PRBool *aDoContinue)
{
*aDoContinue = PR_TRUE;
PRInt32 i;
nsIContentFilter *listener;
for (i=0; i < mContentFilters.Count() && *aDoContinue; i++)
{
listener = (nsIContentFilter *)mContentFilters[i];
if (listener)
listener->NotifyOfInsertion(aFlavor, nsnull, sourceDoc,
aWillDeleteSelection, aFragmentAsNode,
aFragStartNode, aFragStartOffset,
aFragEndNode, aFragEndOffset,
aTargetNode, aTargetOffset, aDoContinue);
}
return NS_OK;
}
PRBool
nsHTMLEditor::IsInLink(nsIDOMNode *aNode, nsCOMPtr<nsIDOMNode> *outLink)
{
if (!aNode)
return PR_FALSE;
if (outLink)
*outLink = nsnull;
nsCOMPtr<nsIDOMNode> tmp, node = aNode;
while (node)
{
if (nsHTMLEditUtils::IsLink(node))
{
if (outLink)
*outLink = node;
return PR_TRUE;
}
tmp = node;
tmp->GetParentNode(getter_AddRefs(node));
}
return PR_FALSE;
}
nsresult
nsHTMLEditor::StripFormattingNodes(nsIDOMNode *aNode, PRBool aListOnly)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (content->TextIsOnlyWhitespace())
{
nsCOMPtr<nsIDOMNode> parent, ignored;
aNode->GetParentNode(getter_AddRefs(parent));
if (parent)
{
if (!aListOnly || nsHTMLEditUtils::IsList(parent))
res = parent->RemoveChild(aNode, getter_AddRefs(ignored));
return res;
}
}
if (!nsHTMLEditUtils::IsPre(aNode))
{
nsCOMPtr<nsIDOMNode> child;
aNode->GetLastChild(getter_AddRefs(child));
while (child)
{
nsCOMPtr<nsIDOMNode> tmp;
child->GetPreviousSibling(getter_AddRefs(tmp));
res = StripFormattingNodes(child, aListOnly);
NS_ENSURE_SUCCESS(res, res);
child = tmp;
}
}
return res;
}
NS_IMETHODIMP nsHTMLEditor::PrepareTransferable(nsITransferable **transferable)
{
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::PrepareHTMLTransferable(nsITransferable **aTransferable,
PRBool aHavePrivFlavor)
{
// Create generic Transferable for getting the data
nsresult rv = CallCreateInstance("@mozilla.org/widget/transferable;1", aTransferable);
if (NS_FAILED(rv))
return rv;
// Get the nsITransferable interface for getting the data from the clipboard
if (aTransferable)
{
// Create the desired DataFlavor for the type of data
// we want to get out of the transferable
// This should only happen in html editors, not plaintext
if (!IsPlaintextEditor())
{
if (!aHavePrivFlavor)
{
(*aTransferable)->AddDataFlavor(kNativeHTMLMime);
}
(*aTransferable)->AddDataFlavor(kHTMLMime);
(*aTransferable)->AddDataFlavor(kFileMime);
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
PRInt32 clipboardPasteOrder = 1; // order of image-encoding preference
if (prefs)
{
prefs->GetIntPref("clipboard.paste_image_type", &clipboardPasteOrder);
switch (clipboardPasteOrder)
{
case 0: // prefer JPEG over PNG over GIF encoding
(*aTransferable)->AddDataFlavor(kJPEGImageMime);
(*aTransferable)->AddDataFlavor(kPNGImageMime);
(*aTransferable)->AddDataFlavor(kGIFImageMime);
break;
case 1: // prefer PNG over JPEG over GIF encoding (default)
default:
(*aTransferable)->AddDataFlavor(kPNGImageMime);
(*aTransferable)->AddDataFlavor(kJPEGImageMime);
(*aTransferable)->AddDataFlavor(kGIFImageMime);
break;
case 2: // prefer GIF over JPEG over PNG encoding
(*aTransferable)->AddDataFlavor(kGIFImageMime);
(*aTransferable)->AddDataFlavor(kJPEGImageMime);
(*aTransferable)->AddDataFlavor(kPNGImageMime);
break;
}
}
}
(*aTransferable)->AddDataFlavor(kUnicodeMime);
(*aTransferable)->AddDataFlavor(kMozTextInternal);
}
return NS_OK;
}
PRInt32
FindPositiveIntegerAfterString(const char *aLeadingString, nsCString &aCStr)
{
// first obtain offsets from cfhtml str
PRInt32 numFront = aCStr.Find(aLeadingString);
if (numFront == -1)
return -1;
numFront += strlen(aLeadingString);
PRInt32 numBack = aCStr.FindCharInSet(CRLF, numFront);
if (numBack == -1)
return -1;
nsCAutoString numStr(Substring(aCStr, numFront, numBack-numFront));
PRInt32 errorCode;
return numStr.ToInteger(&errorCode);
}
nsresult
RemoveFragComments(nsCString & aStr)
{
// remove the StartFragment/EndFragment comments from the str, if present
PRInt32 startCommentIndx = aStr.Find("<!--StartFragment");
if (startCommentIndx >= 0)
{
PRInt32 startCommentEnd = aStr.Find("-->", PR_FALSE, startCommentIndx);
if (startCommentEnd > startCommentIndx)
aStr.Cut(startCommentIndx, (startCommentEnd+3)-startCommentIndx);
}
PRInt32 endCommentIndx = aStr.Find("<!--EndFragment");
if (endCommentIndx >= 0)
{
PRInt32 endCommentEnd = aStr.Find("-->", PR_FALSE, endCommentIndx);
if (endCommentEnd > endCommentIndx)
aStr.Cut(endCommentIndx, (endCommentEnd+3)-endCommentIndx);
}
return NS_OK;
}
nsresult
nsHTMLEditor::ParseCFHTML(nsCString & aCfhtml, PRUnichar **aStuffToPaste, PRUnichar **aCfcontext)
{
// first obtain offsets from cfhtml str
PRInt32 startHTML = FindPositiveIntegerAfterString("StartHTML:", aCfhtml);
PRInt32 endHTML = FindPositiveIntegerAfterString("EndHTML:", aCfhtml);
PRInt32 startFragment = FindPositiveIntegerAfterString("StartFragment:", aCfhtml);
PRInt32 endFragment = FindPositiveIntegerAfterString("EndFragment:", aCfhtml);
if ((startHTML<0) || (endHTML<0) || (startFragment<0) || (endFragment<0))
return NS_ERROR_FAILURE;
// create context string
nsCAutoString contextUTF8(Substring(aCfhtml, startHTML, startFragment - startHTML) +
NS_LITERAL_CSTRING("<!--" kInsertCookie "-->") +
Substring(aCfhtml, endFragment, endHTML - endFragment));
// validate startFragment
// make sure it's not in the middle of a HTML tag
// see bug #228879 for more details
PRInt32 curPos = startFragment;
while (curPos > startHTML)
{
if (aCfhtml[curPos] == '>')
{
// working backwards, the first thing we see is the end of a tag
// so StartFragment is good, so do nothing.
break;
}
else if (aCfhtml[curPos] == '<')
{
// if we are at the start, then we want to see the '<'
if (curPos != startFragment)
{
// working backwards, the first thing we see is the start of a tag
// so StartFragment is bad, so we need to update it.
NS_ERROR("StartFragment byte count in the clipboard looks bad, see bug #228879");
startFragment = curPos - 1;
}
break;
}
else
{
curPos--;
}
}
// create fragment string
nsCAutoString fragmentUTF8(Substring(aCfhtml, startFragment, endFragment-startFragment));
// remove the StartFragment/EndFragment comments from the fragment, if present
RemoveFragComments(fragmentUTF8);
// remove the StartFragment/EndFragment comments from the context, if present
RemoveFragComments(contextUTF8);
// convert both strings to usc2
const nsAFlatString& fragUcs2Str = NS_ConvertUTF8toUTF16(fragmentUTF8);
const nsAFlatString& cntxtUcs2Str = NS_ConvertUTF8toUTF16(contextUTF8);
// translate platform linebreaks for fragment
PRInt32 oldLengthInChars = fragUcs2Str.Length() + 1; // +1 to include null terminator
PRInt32 newLengthInChars = 0;
*aStuffToPaste = nsLinebreakConverter::ConvertUnicharLineBreaks(fragUcs2Str.get(),
nsLinebreakConverter::eLinebreakAny,
nsLinebreakConverter::eLinebreakContent,
oldLengthInChars, &newLengthInChars);
if (!aStuffToPaste)
{
return NS_ERROR_FAILURE;
}
// translate platform linebreaks for context
oldLengthInChars = cntxtUcs2Str.Length() + 1; // +1 to include null terminator
newLengthInChars = 0;
*aCfcontext = nsLinebreakConverter::ConvertUnicharLineBreaks(cntxtUcs2Str.get(),
nsLinebreakConverter::eLinebreakAny,
nsLinebreakConverter::eLinebreakContent,
oldLengthInChars, &newLengthInChars);
// it's ok for context to be empty. frag might be whole doc and contain all it's context.
// we're done!
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::InsertFromTransferable(nsITransferable *transferable,
nsIDOMDocument *aSourceDoc,
const nsAString & aContextStr,
const nsAString & aInfoStr,
nsIDOMNode *aDestinationNode,
PRInt32 aDestOffset,
PRBool aDoDeleteSelection)
{
nsresult rv = NS_OK;
nsXPIDLCString bestFlavor;
nsCOMPtr<nsISupports> genericDataObj;
PRUint32 len = 0;
if ( NS_SUCCEEDED(transferable->GetAnyTransferData(getter_Copies(bestFlavor), getter_AddRefs(genericDataObj), &len)) )
{
nsAutoTxnsConserveSelection dontSpazMySelection(this);
nsAutoString flavor;
flavor.AssignWithConversion(bestFlavor);
nsAutoString stuffToPaste;
#ifdef DEBUG_clipboard
printf("Got flavor [%s]\n", bestFlavor);
#endif
if (0 == nsCRT::strcmp(bestFlavor, kNativeHTMLMime))
{
// note cf_html uses utf8, hence use length = len, not len/2 as in flavors below
nsCOMPtr<nsISupportsCString> textDataObj(do_QueryInterface(genericDataObj));
if (textDataObj && len > 0)
{
nsCAutoString cfhtml;
textDataObj->GetData(cfhtml);
NS_ASSERTION(cfhtml.Length() <= (len), "Invalid length!");
nsXPIDLString cfcontext, cffragment, cfselection; // cfselection left emtpy for now
rv = ParseCFHTML(cfhtml, getter_Copies(cffragment), getter_Copies(cfcontext));
if (NS_SUCCEEDED(rv) && !cffragment.IsEmpty())
{
nsAutoEditBatch beginBatching(this);
rv = InsertHTMLWithContext(cffragment,
cfcontext, cfselection, flavor,
aSourceDoc,
aDestinationNode, aDestOffset,
aDoDeleteSelection);
}
}
}
else if (0 == nsCRT::strcmp(bestFlavor, kHTMLMime))
{
nsCOMPtr<nsISupportsString> textDataObj(do_QueryInterface(genericDataObj));
if (textDataObj && len > 0)
{
nsAutoString text;
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (len/2), "Invalid length!");
stuffToPaste.Assign(text.get(), len / 2);
nsAutoEditBatch beginBatching(this);
rv = InsertHTMLWithContext(stuffToPaste,
aContextStr, aInfoStr, flavor,
aSourceDoc,
aDestinationNode, aDestOffset,
aDoDeleteSelection);
}
}
else if (0 == nsCRT::strcmp(bestFlavor, kUnicodeMime) ||
0 == nsCRT::strcmp(bestFlavor, kMozTextInternal))
{
nsCOMPtr<nsISupportsString> textDataObj(do_QueryInterface(genericDataObj));
if (textDataObj && len > 0)
{
nsAutoString text;
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (len/2), "Invalid length!");
stuffToPaste.Assign(text.get(), len / 2);
nsAutoEditBatch beginBatching(this);
// need to provide a hook from this point
rv = InsertTextAt(stuffToPaste, aDestinationNode, aDestOffset, aDoDeleteSelection);
}
}
else if (0 == nsCRT::strcmp(bestFlavor, kFileMime))
{
nsCOMPtr<nsIFile> fileObj(do_QueryInterface(genericDataObj));
if (fileObj && len > 0)
{
nsCOMPtr<nsIURI> uri;
rv = NS_NewFileURI(getter_AddRefs(uri), fileObj);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIURL> fileURL(do_QueryInterface(uri));
if (fileURL)
{
PRBool insertAsImage = PR_FALSE;
nsCAutoString fileextension;
rv = fileURL->GetFileExtension(fileextension);
if (NS_SUCCEEDED(rv) && !fileextension.IsEmpty())
{
if ( (nsCRT::strcasecmp(fileextension.get(), "jpg") == 0 )
|| (nsCRT::strcasecmp(fileextension.get(), "jpeg") == 0 )
|| (nsCRT::strcasecmp(fileextension.get(), "gif") == 0 )
|| (nsCRT::strcasecmp(fileextension.get(), "png") == 0 ) )
{
insertAsImage = PR_TRUE;
}
}
nsCAutoString urltext;
rv = fileURL->GetSpec(urltext);
if (NS_SUCCEEDED(rv) && !urltext.IsEmpty())
{
if (insertAsImage)
{
stuffToPaste.AssignLiteral("<IMG src=\"");
AppendUTF8toUTF16(urltext, stuffToPaste);
stuffToPaste.AppendLiteral("\" alt=\"\" >");
}
else /* insert as link */
{
stuffToPaste.AssignLiteral("<A href=\"");
AppendUTF8toUTF16(urltext, stuffToPaste);
stuffToPaste.AppendLiteral("\">");
AppendUTF8toUTF16(urltext, stuffToPaste);
stuffToPaste.AppendLiteral("</A>");
}
nsAutoEditBatch beginBatching(this);
const nsAFlatString& empty = EmptyString();
rv = InsertHTMLWithContext(stuffToPaste,
empty, empty, flavor,
aSourceDoc,
aDestinationNode, aDestOffset,
aDoDeleteSelection);
}
}
}
}
else if (0 == nsCRT::strcmp(bestFlavor, kJPEGImageMime) ||
0 == nsCRT::strcmp(bestFlavor, kPNGImageMime) ||
0 == nsCRT::strcmp(bestFlavor, kGIFImageMime))
{
nsCOMPtr<nsIInputStream> imageStream(do_QueryInterface(genericDataObj));
NS_ENSURE_TRUE(imageStream, NS_ERROR_FAILURE);
nsCOMPtr<nsIFile> fileToUse;
NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(fileToUse));
if (0 == nsCRT::strcmp(bestFlavor, kJPEGImageMime))
fileToUse->Append(NS_LITERAL_STRING("moz-screenshot.jpg"));
else if (0 == nsCRT::strcmp(bestFlavor, kPNGImageMime))
fileToUse->Append(NS_LITERAL_STRING("moz-screenshot.png"));
else if (0 == nsCRT::strcmp(bestFlavor, kGIFImageMime))
fileToUse->Append(NS_LITERAL_STRING("moz-screenshot.gif"));
nsCOMPtr<nsILocalFile> path = do_QueryInterface(fileToUse);
path->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
nsCOMPtr<nsIOutputStream> outputStream;
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), fileToUse);
NS_ENSURE_SUCCESS(rv, rv);
PRUint32 length;
imageStream->Available(&length);
nsCOMPtr<nsIOutputStream> bufferedOutputStream;
rv = NS_NewBufferedOutputStream(getter_AddRefs(bufferedOutputStream), outputStream, length);
NS_ENSURE_SUCCESS(rv, rv);
PRUint32 numWritten;
rv = bufferedOutputStream->WriteFrom(imageStream, length, &numWritten);
NS_ENSURE_SUCCESS(rv, rv);
// force the stream close before we try to insert the image
// into the document.
rv = bufferedOutputStream->Close();
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> uri;
rv = NS_NewFileURI(getter_AddRefs(uri), fileToUse);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURL> fileURL(do_QueryInterface(uri));
if (fileURL)
{
nsCAutoString urltext;
rv = fileURL->GetSpec(urltext);
if (NS_SUCCEEDED(rv) && !urltext.IsEmpty())
{
stuffToPaste.AssignLiteral("<IMG src=\"");
AppendUTF8toUTF16(urltext, stuffToPaste);
stuffToPaste.AppendLiteral("\" alt=\"\" >");
nsAutoEditBatch beginBatching(this);
rv = InsertHTMLWithContext(stuffToPaste, EmptyString(), EmptyString(),
NS_LITERAL_STRING(kFileMime),
aSourceDoc,
aDestinationNode, aDestOffset,
aDoDeleteSelection);
}
}
}
}
// Try to scroll the selection into view if the paste/drop succeeded
// After ScrollSelectionIntoView(), the pending notifications might be
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
if (NS_SUCCEEDED(rv))
ScrollSelectionIntoView(PR_FALSE);
return rv;
}
NS_IMETHODIMP nsHTMLEditor::InsertFromDrop(nsIDOMEvent* aDropEvent)
{
ForceCompositionEnd();
nsresult rv;
nsCOMPtr<nsIDragService> dragService =
do_GetService("@mozilla.org/widget/dragservice;1", &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDragSession> dragSession;
dragService->GetCurrentSession(getter_AddRefs(dragSession));
if (!dragSession) return NS_OK;
// transferable hooks here
nsCOMPtr<nsIDOMDocument> domdoc;
GetDocument(getter_AddRefs(domdoc));
// find out if we have our internal html flavor on the clipboard. We don't want to mess
// around with cfhtml if we do.
PRBool bHavePrivateHTMLFlavor = PR_FALSE;
rv = dragSession->IsDataFlavorSupported(kHTMLContext, &bHavePrivateHTMLFlavor);
if (NS_FAILED(rv)) return rv;
// Get the nsITransferable interface for getting the data from the drop
nsCOMPtr<nsITransferable> trans;
rv = PrepareHTMLTransferable(getter_AddRefs(trans), bHavePrivateHTMLFlavor);
if (NS_FAILED(rv)) return rv;
if (!trans) return NS_OK; // NS_ERROR_FAILURE; SHOULD WE FAIL?
PRUint32 numItems = 0;
rv = dragSession->GetNumDropItems(&numItems);
if (NS_FAILED(rv)) return rv;
// Combine any deletion and drop insertion into one transaction
nsAutoEditBatch beginBatching(this);
// We never have to delete if selection is already collapsed
PRBool deleteSelection = PR_FALSE;
nsCOMPtr<nsIDOMNode> newSelectionParent;
PRInt32 newSelectionOffset = 0;
// Source doc is null if source is *not* the current editor document
nsCOMPtr<nsIDOMDocument> srcdomdoc;
rv = dragSession->GetSourceDocument(getter_AddRefs(srcdomdoc));
if (NS_FAILED(rv)) return rv;
PRUint32 i;
PRBool doPlaceCaret = PR_TRUE;
for (i = 0; i < numItems; ++i)
{
rv = dragSession->GetData(trans, i);
if (NS_FAILED(rv)) return rv;
if (!trans) return NS_OK; // NS_ERROR_FAILURE; Should we fail?
// get additional html copy hints, if present
nsAutoString contextStr, infoStr;
nsCOMPtr<nsISupports> contextDataObj, infoDataObj;
PRUint32 contextLen, infoLen;
nsCOMPtr<nsISupportsString> textDataObj;
nsCOMPtr<nsITransferable> contextTrans =
do_CreateInstance("@mozilla.org/widget/transferable;1");
NS_ENSURE_TRUE(contextTrans, NS_ERROR_NULL_POINTER);
contextTrans->AddDataFlavor(kHTMLContext);
dragSession->GetData(contextTrans, i);
contextTrans->GetTransferData(kHTMLContext, getter_AddRefs(contextDataObj), &contextLen);
nsCOMPtr<nsITransferable> infoTrans =
do_CreateInstance("@mozilla.org/widget/transferable;1");
NS_ENSURE_TRUE(infoTrans, NS_ERROR_NULL_POINTER);
infoTrans->AddDataFlavor(kHTMLInfo);
dragSession->GetData(infoTrans, i);
infoTrans->GetTransferData(kHTMLInfo, getter_AddRefs(infoDataObj), &infoLen);
if (contextDataObj)
{
nsAutoString text;
textDataObj = do_QueryInterface(contextDataObj);
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (contextLen/2), "Invalid length!");
contextStr.Assign(text.get(), contextLen / 2);
}
if (infoDataObj)
{
nsAutoString text;
textDataObj = do_QueryInterface(infoDataObj);
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (infoLen/2), "Invalid length!");
infoStr.Assign(text.get(), infoLen / 2);
}
if (doPlaceCaret)
{
// check if the user pressed the key to force a copy rather than a move
// if we run into problems here, we'll just assume the user doesn't want a copy
PRBool userWantsCopy = PR_FALSE;
nsCOMPtr<nsIDOMNSUIEvent> nsuiEvent(do_QueryInterface(aDropEvent));
if (!nsuiEvent) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aDropEvent));
if (mouseEvent)
#if defined(XP_MAC) || defined(XP_MACOSX)
mouseEvent->GetAltKey(&userWantsCopy);
#else
mouseEvent->GetCtrlKey(&userWantsCopy);
#endif
// Current doc is destination
nsCOMPtr<nsIDOMDocument>destdomdoc;
rv = GetDocument(getter_AddRefs(destdomdoc));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsISelection> selection;
rv = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
if (!selection) return NS_ERROR_FAILURE;
PRBool isCollapsed;
rv = selection->GetIsCollapsed(&isCollapsed);
if (NS_FAILED(rv)) return rv;
// Parent and offset under the mouse cursor
rv = nsuiEvent->GetRangeParent(getter_AddRefs(newSelectionParent));
if (NS_FAILED(rv)) return rv;
if (!newSelectionParent) return NS_ERROR_FAILURE;
rv = nsuiEvent->GetRangeOffset(&newSelectionOffset);
if (NS_FAILED(rv)) return rv;
// XXX: This userSelectNode code is a workaround for bug 195957.
//
// Check to see if newSelectionParent is part of a "-moz-user-select: all"
// subtree. If it is, we need to make sure we don't drop into it!
nsCOMPtr<nsIDOMNode> userSelectNode = FindUserSelectAllNode(newSelectionParent);
if (userSelectNode)
{
// The drop is happening over a "-moz-user-select: all"
// subtree so make sure the content we insert goes before
// the root of the subtree.
//
// XXX: Note that inserting before the subtree matches the
// current behavior when dropping on top of an image.
// The decision for dropping before or after the
// subtree should really be done based on coordinates.
rv = GetNodeLocation(userSelectNode, address_of(newSelectionParent),
&newSelectionOffset);
if (NS_FAILED(rv)) return rv;
if (!newSelectionParent) return NS_ERROR_FAILURE;
}
// We never have to delete if selection is already collapsed
PRBool cursorIsInSelection = PR_FALSE;
// Check if mouse is in the selection
if (!isCollapsed)
{
PRInt32 rangeCount;
rv = selection->GetRangeCount(&rangeCount);
if (NS_FAILED(rv))
return rv;
for (PRInt32 j = 0; j < rangeCount; j++)
{
nsCOMPtr<nsIDOMRange> range;
rv = selection->GetRangeAt(j, getter_AddRefs(range));
if (NS_FAILED(rv) || !range)
continue;//don't bail yet, iterate through them all
nsCOMPtr<nsIDOMNSRange> nsrange(do_QueryInterface(range));
if (NS_FAILED(rv) || !nsrange)
continue;//don't bail yet, iterate through them all
rv = nsrange->IsPointInRange(newSelectionParent, newSelectionOffset, &cursorIsInSelection);
if(cursorIsInSelection)
break;
}
if (cursorIsInSelection)
{
// Dragging within same doc can't drop on itself -- leave!
// (We shouldn't get here - drag event shouldn't have started if over selection)
if (srcdomdoc == destdomdoc)
return NS_OK;
// Dragging from another window onto a selection
// XXX Decision made to NOT do this,
// note that 4.x does replace if dropped on
//deleteSelection = PR_TRUE;
}
else
{
// We are NOT over the selection
if (srcdomdoc == destdomdoc)
{
// Within the same doc: delete if user doesn't want to copy
deleteSelection = !userWantsCopy;
}
else
{
// Different source doc: Don't delete
deleteSelection = PR_FALSE;
}
}
}
// We have to figure out whether to delete/relocate caret only once
doPlaceCaret = PR_FALSE;
}
// handle transferable hooks
if (!nsEditorHookUtils::DoInsertionHook(domdoc, aDropEvent, trans))
return NS_OK;
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = InsertFromTransferable(trans, srcdomdoc, contextStr, infoStr,
newSelectionParent,
newSelectionOffset, deleteSelection);
}
return rv;
}
NS_IMETHODIMP nsHTMLEditor::CanDrag(nsIDOMEvent *aDragEvent, PRBool *aCanDrag)
{
return nsPlaintextEditor::CanDrag(aDragEvent, aCanDrag);
}
nsresult
nsHTMLEditor::PutDragDataInTransferable(nsITransferable **aTransferable)
{
NS_ENSURE_ARG_POINTER(aTransferable);
*aTransferable = nsnull;
nsCOMPtr<nsIDocumentEncoder> docEncoder;
nsresult rv = SetupDocEncoder(getter_AddRefs(docEncoder));
if (NS_FAILED(rv)) return rv;
NS_ENSURE_TRUE(docEncoder, NS_ERROR_FAILURE);
// grab a string
nsAutoString buffer, parents, info;
// find out if we're a plaintext control or not
if (!IsPlaintextEditor())
{
// encode the selection as html with contextual info
rv = docEncoder->EncodeToStringWithContext(parents, info, buffer);
if (NS_FAILED(rv)) return rv;
}
else
{
// encode the selection
rv = docEncoder->EncodeToString(buffer);
if (NS_FAILED(rv)) return rv;
}
// if we have an empty string, we're done; otherwise continue
if ( buffer.IsEmpty() )
return NS_OK;
nsCOMPtr<nsISupportsString> dataWrapper, contextWrapper, infoWrapper;
dataWrapper = do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = dataWrapper->SetData(buffer);
if (NS_FAILED(rv)) return rv;
/* create html flavor transferable */
nsCOMPtr<nsITransferable> trans = do_CreateInstance("@mozilla.org/widget/transferable;1");
NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE);
if (IsPlaintextEditor())
{
// Add the unicode flavor to the transferable
rv = trans->AddDataFlavor(kUnicodeMime);
if (NS_FAILED(rv)) return rv;
// QI the data object an |nsISupports| so that when the transferable holds
// onto it, it will addref the correct interface.
nsCOMPtr<nsISupports> genericDataObj(do_QueryInterface(dataWrapper));
rv = trans->SetTransferData(kUnicodeMime, genericDataObj,
buffer.Length() * sizeof(PRUnichar));
if (NS_FAILED(rv)) return rv;
}
else
{
contextWrapper = do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
NS_ENSURE_TRUE(contextWrapper, NS_ERROR_FAILURE);
infoWrapper = do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
NS_ENSURE_TRUE(infoWrapper, NS_ERROR_FAILURE);
contextWrapper->SetData(parents);
infoWrapper->SetData(info);
rv = trans->AddDataFlavor(kHTMLMime);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIFormatConverter> htmlConverter =
do_CreateInstance("@mozilla.org/widget/htmlformatconverter;1");
NS_ENSURE_TRUE(htmlConverter, NS_ERROR_FAILURE);
rv = trans->SetConverter(htmlConverter);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsISupports> genericDataObj(do_QueryInterface(dataWrapper));
rv = trans->SetTransferData(kHTMLMime, genericDataObj,
buffer.Length() * sizeof(PRUnichar));
if (NS_FAILED(rv)) return rv;
if (!parents.IsEmpty())
{
// Add the htmlcontext DataFlavor to the transferable
trans->AddDataFlavor(kHTMLContext);
genericDataObj = do_QueryInterface(contextWrapper);
trans->SetTransferData(kHTMLContext, genericDataObj,
parents.Length() * sizeof(PRUnichar));
}
if (!info.IsEmpty())
{
// Add the htmlinfo DataFlavor to the transferable
trans->AddDataFlavor(kHTMLInfo);
genericDataObj = do_QueryInterface(infoWrapper);
trans->SetTransferData(kHTMLInfo, genericDataObj,
info.Length() * sizeof(PRUnichar));
}
}
*aTransferable = trans;
NS_ADDREF(*aTransferable);
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::DoDrag(nsIDOMEvent *aDragEvent)
{
return nsPlaintextEditor::DoDrag(aDragEvent);
}
PRBool nsHTMLEditor::HavePrivateHTMLFlavor(nsIClipboard *aClipboard)
{
// check the clipboard for our special kHTMLContext flavor. If that is there, we know
// we have our own internal html format on clipboard.
if (!aClipboard) return PR_FALSE;
PRBool bHavePrivateHTMLFlavor = PR_FALSE;
const char* flavArray[] = { kHTMLContext };
if (NS_SUCCEEDED(aClipboard->HasDataMatchingFlavors(flavArray,
NS_ARRAY_LENGTH(flavArray), nsIClipboard::kGlobalClipboard,
&bHavePrivateHTMLFlavor )))
return bHavePrivateHTMLFlavor;
return PR_FALSE;
}
NS_IMETHODIMP nsHTMLEditor::Paste(PRInt32 aSelectionType)
{
if (!FireClipboardEvent(NS_PASTE))
return NS_OK;
// Get Clipboard Service
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
if (NS_FAILED(rv))
return rv;
// find out if we have our internal html flavor on the clipboard. We don't want to mess
// around with cfhtml if we do.
PRBool bHavePrivateHTMLFlavor = HavePrivateHTMLFlavor(clipboard);
// Get the nsITransferable interface for getting the data from the clipboard
nsCOMPtr<nsITransferable> trans;
rv = PrepareHTMLTransferable(getter_AddRefs(trans), bHavePrivateHTMLFlavor);
if (NS_SUCCEEDED(rv) && trans)
{
// Get the Data from the clipboard
if (NS_SUCCEEDED(clipboard->GetData(trans, aSelectionType)) && IsModifiable())
{
// also get additional html copy hints, if present
nsAutoString contextStr, infoStr;
// also get additional html copy hints, if present
if (bHavePrivateHTMLFlavor)
{
nsCOMPtr<nsISupports> contextDataObj, infoDataObj;
PRUint32 contextLen, infoLen;
nsCOMPtr<nsISupportsString> textDataObj;
nsCOMPtr<nsITransferable> contextTrans =
do_CreateInstance("@mozilla.org/widget/transferable;1");
NS_ENSURE_TRUE(contextTrans, NS_ERROR_NULL_POINTER);
contextTrans->AddDataFlavor(kHTMLContext);
clipboard->GetData(contextTrans, aSelectionType);
contextTrans->GetTransferData(kHTMLContext, getter_AddRefs(contextDataObj), &contextLen);
nsCOMPtr<nsITransferable> infoTrans =
do_CreateInstance("@mozilla.org/widget/transferable;1");
NS_ENSURE_TRUE(infoTrans, NS_ERROR_NULL_POINTER);
infoTrans->AddDataFlavor(kHTMLInfo);
clipboard->GetData(infoTrans, aSelectionType);
infoTrans->GetTransferData(kHTMLInfo, getter_AddRefs(infoDataObj), &infoLen);
if (contextDataObj)
{
nsAutoString text;
textDataObj = do_QueryInterface(contextDataObj);
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (contextLen/2), "Invalid length!");
contextStr.Assign(text.get(), contextLen / 2);
}
if (infoDataObj)
{
nsAutoString text;
textDataObj = do_QueryInterface(infoDataObj);
textDataObj->GetData(text);
NS_ASSERTION(text.Length() <= (infoLen/2), "Invalid length!");
infoStr.Assign(text.get(), infoLen / 2);
}
}
// handle transferable hooks
nsCOMPtr<nsIDOMDocument> domdoc;
GetDocument(getter_AddRefs(domdoc));
if (!nsEditorHookUtils::DoInsertionHook(domdoc, nsnull, trans))
return NS_OK;
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = InsertFromTransferable(trans, nsnull, contextStr, infoStr,
nsnull, 0, PR_TRUE);
}
}
return rv;
}
NS_IMETHODIMP nsHTMLEditor::PasteTransferable(nsITransferable *aTransferable)
{
if (!FireClipboardEvent(NS_PASTE))
return NS_OK;
// handle transferable hooks
nsCOMPtr<nsIDOMDocument> domdoc;
GetDocument(getter_AddRefs(domdoc));
if (!nsEditorHookUtils::DoInsertionHook(domdoc, nsnull, aTransferable))
return NS_OK;
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
nsAutoString contextStr, infoStr;
return InsertFromTransferable(aTransferable, nsnull, contextStr, infoStr,
nsnull, 0, PR_TRUE);
}
//
// HTML PasteNoFormatting. Ignore any HTML styles and formating in paste source
//
NS_IMETHODIMP nsHTMLEditor::PasteNoFormatting(PRInt32 aSelectionType)
{
ForceCompositionEnd();
// Get Clipboard Service
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
if (NS_FAILED(rv))
return rv;
// Get the nsITransferable interface for getting the data from the clipboard.
// use nsPlaintextEditor::PrepareTransferable() to force unicode plaintext data.
nsCOMPtr<nsITransferable> trans;
rv = nsPlaintextEditor::PrepareTransferable(getter_AddRefs(trans));
if (NS_SUCCEEDED(rv) && trans)
{
// Get the Data from the clipboard
if (NS_SUCCEEDED(clipboard->GetData(trans, aSelectionType)) && IsModifiable())
{
const nsAFlatString& empty = EmptyString();
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = InsertFromTransferable(trans, nsnull, empty, empty, nsnull, 0,
PR_TRUE);
}
}
return rv;
}
// The following arrays contain the MIME types that we can paste. The arrays
// are used by CanPaste() and CanPasteTransferable() below.
static const char* textEditorFlavors[] = { kUnicodeMime };
static const char* textHtmlEditorFlavors[] = { kUnicodeMime, kHTMLMime,
kJPEGImageMime, kPNGImageMime,
kGIFImageMime };
NS_IMETHODIMP nsHTMLEditor::CanPaste(PRInt32 aSelectionType, PRBool *aCanPaste)
{
NS_ENSURE_ARG_POINTER(aCanPaste);
*aCanPaste = PR_FALSE;
// can't paste if readonly
if (!IsModifiable())
return NS_OK;
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
if (NS_FAILED(rv)) return rv;
PRBool haveFlavors;
// Use the flavors depending on the current editor mask
if (IsPlaintextEditor())
rv = clipboard->HasDataMatchingFlavors(textEditorFlavors,
NS_ARRAY_LENGTH(textEditorFlavors),
aSelectionType, &haveFlavors);
else
rv = clipboard->HasDataMatchingFlavors(textHtmlEditorFlavors,
NS_ARRAY_LENGTH(textHtmlEditorFlavors),
aSelectionType, &haveFlavors);
if (NS_FAILED(rv)) return rv;
*aCanPaste = haveFlavors;
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::CanPasteTransferable(nsITransferable *aTransferable, PRBool *aCanPaste)
{
NS_ENSURE_ARG_POINTER(aCanPaste);
// can't paste if readonly
if (!IsModifiable()) {
*aCanPaste = PR_FALSE;
return NS_OK;
}
// If |aTransferable| is null, assume that a paste will succeed.
if (!aTransferable) {
*aCanPaste = PR_TRUE;
return NS_OK;
}
// Peek in |aTransferable| to see if it contains a supported MIME type.
// Use the flavors depending on the current editor mask
const char ** flavors;
unsigned length;
if (IsPlaintextEditor()) {
flavors = textEditorFlavors;
length = NS_ARRAY_LENGTH(textEditorFlavors);
} else {
flavors = textHtmlEditorFlavors;
length = NS_ARRAY_LENGTH(textHtmlEditorFlavors);
}
for (unsigned int i = 0; i < length; i++, flavors++) {
nsCOMPtr<nsISupports> data;
PRUint32 dataLen;
nsresult rv = aTransferable->GetTransferData(*flavors,
getter_AddRefs(data),
&dataLen);
if (NS_SUCCEEDED(rv) && data) {
*aCanPaste = PR_TRUE;
return NS_OK;
}
}
*aCanPaste = PR_FALSE;
return NS_OK;
}
//
// HTML PasteAsQuotation: Paste in a blockquote type=cite
//
NS_IMETHODIMP nsHTMLEditor::PasteAsQuotation(PRInt32 aSelectionType)
{
if (IsPlaintextEditor())
return PasteAsPlaintextQuotation(aSelectionType);
nsAutoString citation;
return PasteAsCitedQuotation(citation, aSelectionType);
}
NS_IMETHODIMP nsHTMLEditor::PasteAsCitedQuotation(const nsAString & aCitation,
PRInt32 aSelectionType)
{
nsAutoEditBatch beginBatching(this);
nsAutoRules beginRulesSniffing(this, kOpInsertQuotation, nsIEditor::eNext);
// get selection
nsCOMPtr<nsISelection> selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_NULL_POINTER;
// give rules a chance to handle or cancel
nsTextRulesInfo ruleInfo(nsTextEditRules::kInsertElement);
PRBool cancel, handled;
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (cancel) return NS_OK; // rules canceled the operation
if (!handled)
{
nsCOMPtr<nsIDOMNode> newNode;
res = DeleteSelectionAndCreateNode(NS_LITERAL_STRING("blockquote"), getter_AddRefs(newNode));
if (NS_FAILED(res)) return res;
if (!newNode) return NS_ERROR_NULL_POINTER;
// Try to set type=cite. Ignore it if this fails.
nsCOMPtr<nsIDOMElement> newElement (do_QueryInterface(newNode));
if (newElement)
{
newElement->SetAttribute(NS_LITERAL_STRING("type"), NS_LITERAL_STRING("cite"));
}
// Set the selection to the underneath the node we just inserted:
res = selection->Collapse(newNode, 0);
if (NS_FAILED(res))
{
#ifdef DEBUG_akkana
printf("Couldn't collapse");
#endif
// XXX: error result: should res be returned here?
}
res = Paste(aSelectionType);
}
return res;
}
//
// Paste a plaintext quotation
//
NS_IMETHODIMP nsHTMLEditor::PasteAsPlaintextQuotation(PRInt32 aSelectionType)
{
// Get Clipboard Service
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
if (NS_FAILED(rv)) return rv;
// Create generic Transferable for getting the data
nsCOMPtr<nsITransferable> trans =
do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
if (NS_SUCCEEDED(rv) && trans)
{
// We only handle plaintext pastes here
trans->AddDataFlavor(kUnicodeMime);
// Get the Data from the clipboard
clipboard->GetData(trans, aSelectionType);
// Now we ask the transferable for the data
// it still owns the data, we just have a pointer to it.
// If it can't support a "text" output of the data the call will fail
nsCOMPtr<nsISupports> genericDataObj;
PRUint32 len = 0;
char* flav = 0;
rv = trans->GetAnyTransferData(&flav, getter_AddRefs(genericDataObj),
&len);
if (NS_FAILED(rv))
{
#ifdef DEBUG_akkana
printf("PasteAsPlaintextQuotation: GetAnyTransferData failed, %d\n", rv);
#endif
return rv;
}
if (flav && 0 == nsCRT::strcmp((flav), kUnicodeMime))
{
#ifdef DEBUG_clipboard
printf("Got flavor [%s]\n", flav);
#endif
nsCOMPtr<nsISupportsString> textDataObj(do_QueryInterface(genericDataObj));
if (textDataObj && len > 0)
{
nsAutoString stuffToPaste;
textDataObj->GetData(stuffToPaste);
NS_ASSERTION(stuffToPaste.Length() <= (len/2), "Invalid length!");
nsAutoEditBatch beginBatching(this);
rv = InsertAsPlaintextQuotation(stuffToPaste, PR_TRUE, 0);
}
}
NS_Free(flav);
}
return rv;
}
NS_IMETHODIMP
nsHTMLEditor::InsertTextWithQuotations(const nsAString &aStringToInsert)
{
if (mWrapToWindow)
return InsertText(aStringToInsert);
// The whole operation should be undoable in one transaction:
BeginTransaction();
// We're going to loop over the string, collecting up a "hunk"
// that's all the same type (quoted or not),
// Whenever the quotedness changes (or we reach the string's end)
// we will insert the hunk all at once, quoted or non.
static const PRUnichar cite('>');
PRBool curHunkIsQuoted = (aStringToInsert.First() == cite);
nsAString::const_iterator hunkStart, strEnd;
aStringToInsert.BeginReading(hunkStart);
aStringToInsert.EndReading(strEnd);
// In the loop below, we only look for DOM newlines (\n),
// because we don't have a FindChars method that can look
// for both \r and \n. \r is illegal in the dom anyway,
// but in debug builds, let's take the time to verify that
// there aren't any there:
#ifdef DEBUG
nsAString::const_iterator dbgStart (hunkStart);
if (FindCharInReadable('\r', dbgStart, strEnd))
NS_ASSERTION(PR_FALSE,
"Return characters in DOM! InsertTextWithQuotations may be wrong");
#endif /* DEBUG */
// Loop over lines:
nsresult rv = NS_OK;
nsAString::const_iterator lineStart (hunkStart);
while (1) // we will break from inside when we run out of newlines
{
// Search for the end of this line (dom newlines, see above):
PRBool found = FindCharInReadable('\n', lineStart, strEnd);
PRBool quoted = PR_FALSE;
if (found)
{
// if there's another newline, lineStart now points there.
// Loop over any consecutive newline chars:
nsAString::const_iterator firstNewline (lineStart);
while (*lineStart == '\n')
++lineStart;
quoted = (*lineStart == cite);
if (quoted == curHunkIsQuoted)
continue;
// else we're changing state, so we need to insert
// from curHunk to lineStart then loop around.
// But if the current hunk is quoted, then we want to make sure
// that any extra newlines on the end do not get included in
// the quoted section: blank lines flaking a quoted section
// should be considered unquoted, so that if the user clicks
// there and starts typing, the new text will be outside of
// the quoted block.
if (curHunkIsQuoted)
lineStart = firstNewline;
}
// If no newline found, lineStart is now strEnd and we can finish up,
// inserting from curHunk to lineStart then returning.
const nsAString &curHunk = Substring(hunkStart, lineStart);
nsCOMPtr<nsIDOMNode> dummyNode;
#ifdef DEBUG_akkana_verbose
printf("==== Inserting text as %squoted: ---\n%s---\n",
curHunkIsQuoted ? "" : "non-",
NS_LossyConvertUTF16toASCII(curHunk).get());
#endif
if (curHunkIsQuoted)
rv = InsertAsPlaintextQuotation(curHunk, PR_FALSE,
getter_AddRefs(dummyNode));
else
rv = InsertText(curHunk);
if (!found)
break;
curHunkIsQuoted = quoted;
hunkStart = lineStart;
}
EndTransaction();
return rv;
}
NS_IMETHODIMP nsHTMLEditor::InsertAsQuotation(const nsAString & aQuotedText,
nsIDOMNode **aNodeInserted)
{
if (IsPlaintextEditor())
return InsertAsPlaintextQuotation(aQuotedText, PR_TRUE, aNodeInserted);
nsAutoString citation;
return InsertAsCitedQuotation(aQuotedText, citation, PR_FALSE,
aNodeInserted);
}
// Insert plaintext as a quotation, with cite marks (e.g. "> ").
// This differs from its corresponding method in nsPlaintextEditor
// in that here, quoted material is enclosed in a <pre> tag
// in order to preserve the original line wrapping.
NS_IMETHODIMP
nsHTMLEditor::InsertAsPlaintextQuotation(const nsAString & aQuotedText,
PRBool aAddCites,
nsIDOMNode **aNodeInserted)
{
if (mWrapToWindow)
return nsPlaintextEditor::InsertAsQuotation(aQuotedText, aNodeInserted);
nsresult rv;
// The quotesPreformatted pref is a temporary measure. See bug 69638.
// Eventually we'll pick one way or the other.
PRBool quotesInPre = PR_FALSE;
nsCOMPtr<nsIPrefBranch> prefBranch =
do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv) && prefBranch)
prefBranch->GetBoolPref("editor.quotesPreformatted", &quotesInPre);
nsCOMPtr<nsIDOMNode> preNode;
// get selection
nsCOMPtr<nsISelection> selection;
rv = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
if (!selection) return NS_ERROR_NULL_POINTER;
else
{
nsAutoEditBatch beginBatching(this);
nsAutoRules beginRulesSniffing(this, kOpInsertQuotation, nsIEditor::eNext);
// give rules a chance to handle or cancel
nsTextRulesInfo ruleInfo(nsTextEditRules::kInsertElement);
PRBool cancel, handled;
rv = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(rv)) return rv;
if (cancel) return NS_OK; // rules canceled the operation
if (!handled)
{
// Wrap the inserted quote in a <pre> so it won't be wrapped:
nsAutoString tag;
if (quotesInPre)
tag.AssignLiteral("pre");
else
tag.AssignLiteral("span");
rv = DeleteSelectionAndCreateNode(tag, getter_AddRefs(preNode));
// If this succeeded, then set selection inside the pre
// so the inserted text will end up there.
// If it failed, we don't care what the return value was,
// but we'll fall through and try to insert the text anyway.
if (NS_SUCCEEDED(rv) && preNode)
{
// Add an attribute on the pre node so we'll know it's a quotation.
// Do this after the insertion, so that
nsCOMPtr<nsIDOMElement> preElement (do_QueryInterface(preNode));
if (preElement)
{
preElement->SetAttribute(NS_LITERAL_STRING("_moz_quote"),
NS_LITERAL_STRING("true"));
if (quotesInPre)
{
// set style to not have unwanted vertical margins
preElement->SetAttribute(NS_LITERAL_STRING("style"),
NS_LITERAL_STRING("margin: 0 0 0 0px;"));
}
else
{
// turn off wrapping on spans
preElement->SetAttribute(NS_LITERAL_STRING("style"),
NS_LITERAL_STRING("white-space: pre;"));
}
}
// and set the selection inside it:
selection->Collapse(preNode, 0);
}
if (aAddCites)
rv = nsPlaintextEditor::InsertAsQuotation(aQuotedText, aNodeInserted);
else
rv = nsPlaintextEditor::InsertText(aQuotedText);
// Note that if !aAddCites, aNodeInserted isn't set.
// That's okay because the routines that use aAddCites
// don't need to know the inserted node.
if (aNodeInserted && NS_SUCCEEDED(rv))
{
*aNodeInserted = preNode;
NS_IF_ADDREF(*aNodeInserted);
}
}
}
// Set the selection to just after the inserted node:
if (NS_SUCCEEDED(rv) && preNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
if (NS_SUCCEEDED(GetNodeLocation(preNode, address_of(parent), &offset)) && parent)
selection->Collapse(parent, offset+1);
}
return rv;
}
NS_IMETHODIMP
nsHTMLEditor::StripCites()
{
return nsPlaintextEditor::StripCites();
}
NS_IMETHODIMP
nsHTMLEditor::Rewrap(PRBool aRespectNewlines)
{
return nsPlaintextEditor::Rewrap(aRespectNewlines);
}
NS_IMETHODIMP
nsHTMLEditor::InsertAsCitedQuotation(const nsAString & aQuotedText,
const nsAString & aCitation,
PRBool aInsertHTML,
nsIDOMNode **aNodeInserted)
{
// Don't let anyone insert html into a "plaintext" editor:
if (IsPlaintextEditor())
{
NS_ASSERTION(!aInsertHTML, "InsertAsCitedQuotation: trying to insert html into plaintext editor");
return InsertAsPlaintextQuotation(aQuotedText, PR_TRUE, aNodeInserted);
}
nsCOMPtr<nsIDOMNode> newNode;
nsresult res = NS_OK;
// get selection
nsCOMPtr<nsISelection> selection;
res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_NULL_POINTER;
else
{
nsAutoEditBatch beginBatching(this);
nsAutoRules beginRulesSniffing(this, kOpInsertQuotation, nsIEditor::eNext);
// give rules a chance to handle or cancel
nsTextRulesInfo ruleInfo(nsTextEditRules::kInsertElement);
PRBool cancel, handled;
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (cancel) return NS_OK; // rules canceled the operation
if (!handled)
{
res = DeleteSelectionAndCreateNode(NS_LITERAL_STRING("blockquote"), getter_AddRefs(newNode));
if (NS_FAILED(res)) return res;
if (!newNode) return NS_ERROR_NULL_POINTER;
// Try to set type=cite. Ignore it if this fails.
nsCOMPtr<nsIDOMElement> newElement (do_QueryInterface(newNode));
if (newElement)
{
NS_NAMED_LITERAL_STRING(citestr, "cite");
newElement->SetAttribute(NS_LITERAL_STRING("type"), citestr);
if (!aCitation.IsEmpty())
newElement->SetAttribute(citestr, aCitation);
// Set the selection inside the blockquote so aQuotedText will go there:
selection->Collapse(newNode, 0);
}
if (aInsertHTML)
res = LoadHTML(aQuotedText);
else
res = InsertText(aQuotedText); // XXX ignore charset
if (aNodeInserted)
{
if (NS_SUCCEEDED(res))
{
*aNodeInserted = newNode;
NS_IF_ADDREF(*aNodeInserted);
}
}
}
}
// Set the selection to just after the inserted node:
if (NS_SUCCEEDED(res) && newNode)
{
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
if (NS_SUCCEEDED(GetNodeLocation(newNode, address_of(parent), &offset)) && parent)
selection->Collapse(parent, offset+1);
}
return res;
}
void RemoveBodyAndHead(nsIDOMNode *aNode)
{
if (!aNode)
return;
nsCOMPtr<nsIDOMNode> tmp, child, body, head;
// find the body and head nodes if any.
// look only at immediate children of aNode.
aNode->GetFirstChild(getter_AddRefs(child));
while (child)
{
if (nsTextEditUtils::IsBody(child))
{
body = child;
}
else if (nsEditor::NodeIsType(child, nsEditProperty::head))
{
head = child;
}
child->GetNextSibling(getter_AddRefs(tmp));
child = tmp;
}
if (head)
{
aNode->RemoveChild(head, getter_AddRefs(tmp));
}
if (body)
{
body->GetFirstChild(getter_AddRefs(child));
while (child)
{
aNode->InsertBefore(child, body, getter_AddRefs(tmp));
body->GetFirstChild(getter_AddRefs(child));
}
aNode->RemoveChild(body, getter_AddRefs(tmp));
}
}
/**
* This function finds the target node that we will be pasting into. aStart is
* the context that we're given and aResult will be the target. Initially,
* *aResult must be NULL.
*
* The target for a paste is found by either finding the node that contains
* the magical comment node containing kInsertCookie or, failing that, the
* firstChild of the firstChild (until we reach a leaf).
*/
nsresult FindTargetNode(nsIDOMNode *aStart, nsCOMPtr<nsIDOMNode> &aResult)
{
if (!aStart)
return NS_OK;
nsCOMPtr<nsIDOMNode> child, tmp;
nsresult rv = aStart->GetFirstChild(getter_AddRefs(child));
NS_ENSURE_SUCCESS(rv, rv);
if (!child)
{
// If the current result is NULL, then aStart is a leaf, and is the
// fallback result.
if (!aResult)
aResult = aStart;
return NS_OK;
}
do
{
// Is this child the magical cookie?
nsCOMPtr<nsIDOMComment> comment = do_QueryInterface(child);
if (comment)
{
nsAutoString data;
rv = comment->GetData(data);
NS_ENSURE_SUCCESS(rv, rv);
if (data.EqualsLiteral(kInsertCookie))
{
// Yes it is! Return an error so we bubble out and short-circuit the
// search.
aResult = aStart;
// Note: it doesn't matter if this fails.
aStart->RemoveChild(child, getter_AddRefs(tmp));
return NS_FOUND_TARGET;
}
}
// Note: Don't use NS_ENSURE_* here since we return a failure result to
// inicate that we found the magical cookie and we don't want to spam the
// console.
rv = FindTargetNode(child, aResult);
if (NS_FAILED(rv))
return rv;
rv = child->GetNextSibling(getter_AddRefs(tmp));
NS_ENSURE_SUCCESS(rv, rv);
child = tmp;
} while (child);
return NS_OK;
}
nsresult nsHTMLEditor::CreateDOMFragmentFromPaste(const nsAString &aInputString,
const nsAString & aContextStr,
const nsAString & aInfoStr,
nsCOMPtr<nsIDOMNode> *outFragNode,
nsCOMPtr<nsIDOMNode> *outStartNode,
nsCOMPtr<nsIDOMNode> *outEndNode,
PRInt32 *outStartOffset,
PRInt32 *outEndOffset)
{
if (!outFragNode || !outStartNode || !outEndNode)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMDocumentFragment> docfrag;
nsCOMPtr<nsIDOMNode> contextAsNode, tmp;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMDocument> domDoc;
GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
// if we have context info, create a fragment for that
nsAutoTArray<nsString, 32> tagStack;
nsCOMPtr<nsIDOMDocumentFragment> contextfrag;
nsCOMPtr<nsIDOMNode> contextLeaf, junk;
if (!aContextStr.IsEmpty())
{
res = ParseFragment(aContextStr, tagStack, doc, address_of(contextAsNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(contextAsNode, NS_ERROR_FAILURE);
res = StripFormattingNodes(contextAsNode);
NS_ENSURE_SUCCESS(res, res);
RemoveBodyAndHead(contextAsNode);
res = FindTargetNode(contextAsNode, contextLeaf);
if (res == NS_FOUND_TARGET)
res = NS_OK;
NS_ENSURE_SUCCESS(res, res);
}
// get the tagstack for the context
res = CreateTagStack(tagStack, contextLeaf);
NS_ENSURE_SUCCESS(res, res);
// create fragment for pasted html
res = ParseFragment(aInputString, tagStack, doc, outFragNode);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(*outFragNode, NS_ERROR_FAILURE);
RemoveBodyAndHead(*outFragNode);
if (contextAsNode)
{
// unite the two trees
contextLeaf->AppendChild(*outFragNode, getter_AddRefs(junk));
*outFragNode = contextAsNode;
}
res = StripFormattingNodes(*outFragNode, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
// If there was no context, then treat all of the data we did get as the
// pasted data.
if (contextLeaf)
*outEndNode = *outStartNode = contextLeaf;
else
*outEndNode = *outStartNode = *outFragNode;
*outStartOffset = 0;
// get the infoString contents
nsAutoString numstr1, numstr2;
if (!aInfoStr.IsEmpty())
{
PRInt32 err, sep, num;
sep = aInfoStr.FindChar((PRUnichar)',');
numstr1 = Substring(aInfoStr, 0, sep);
numstr2 = Substring(aInfoStr, sep+1, aInfoStr.Length() - (sep+1));
// Move the start and end children.
num = numstr1.ToInteger(&err);
while (num--)
{
(*outStartNode)->GetFirstChild(getter_AddRefs(tmp));
if (!tmp)
return NS_ERROR_FAILURE;
tmp.swap(*outStartNode);
}
num = numstr2.ToInteger(&err);
while (num--)
{
(*outEndNode)->GetLastChild(getter_AddRefs(tmp));
if (!tmp)
return NS_ERROR_FAILURE;
tmp.swap(*outEndNode);
}
}
GetLengthOfDOMNode(*outEndNode, (PRUint32&)*outEndOffset);
return res;
}
nsresult nsHTMLEditor::ParseFragment(const nsAString & aFragStr,
nsTArray<nsString> &aTagStack,
nsIDocument* aTargetDocument,
nsCOMPtr<nsIDOMNode> *outNode)
{
// figure out if we are parsing full context or not
PRBool bContext = aTagStack.IsEmpty();
// create the parser to do the conversion.
nsresult res;
nsCOMPtr<nsIParser> parser = do_CreateInstance(kCParserCID, &res);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(parser, NS_ERROR_FAILURE);
// create the html fragment sink
nsCOMPtr<nsIContentSink> sink;
if (bContext)
sink = do_CreateInstance(NS_HTMLFRAGMENTSINK2_CONTRACTID);
else
sink = do_CreateInstance(NS_HTMLFRAGMENTSINK_CONTRACTID);
NS_ENSURE_TRUE(sink, NS_ERROR_FAILURE);
nsCOMPtr<nsIFragmentContentSink> fragSink(do_QueryInterface(sink));
NS_ENSURE_TRUE(fragSink, NS_ERROR_FAILURE);
fragSink->SetTargetDocument(aTargetDocument);
// parse the fragment
parser->SetContentSink(sink);
if (bContext)
parser->Parse(aFragStr, (void*)0, NS_LITERAL_CSTRING("text/html"), PR_TRUE, eDTDMode_fragment);
else
parser->ParseFragment(aFragStr, 0, aTagStack, PR_FALSE, NS_LITERAL_CSTRING("text/html"), eDTDMode_quirks);
// get the fragment node
nsCOMPtr<nsIDOMDocumentFragment> contextfrag;
res = fragSink->GetFragment(PR_TRUE, getter_AddRefs(contextfrag));
NS_ENSURE_SUCCESS(res, res);
*outNode = do_QueryInterface(contextfrag);
return res;
}
nsresult nsHTMLEditor::CreateTagStack(nsTArray<nsString> &aTagStack, nsIDOMNode *aNode)
{
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node= aNode;
PRBool bSeenBody = PR_FALSE;
while (node)
{
if (nsTextEditUtils::IsBody(node))
bSeenBody = PR_TRUE;
nsCOMPtr<nsIDOMNode> temp = node;
PRUint16 nodeType;
node->GetNodeType(&nodeType);
if (nsIDOMNode::ELEMENT_NODE == nodeType)
{
nsString* tagName = aTagStack.AppendElement();
NS_ENSURE_TRUE(tagName, NS_ERROR_OUT_OF_MEMORY);
node->GetNodeName(*tagName);
// printf("%s\n",NS_LossyConvertUTF16toASCII(tagName).get());
}
res = temp->GetParentNode(getter_AddRefs(node));
NS_ENSURE_SUCCESS(res, res);
}
if (!bSeenBody)
{
aTagStack.AppendElement(NS_LITERAL_STRING("BODY"));
}
return res;
}
nsresult nsHTMLEditor::CreateListOfNodesToPaste(nsIDOMNode *aFragmentAsNode,
nsCOMArray<nsIDOMNode>& outNodeList,
nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset)
{
if (!aFragmentAsNode)
return NS_ERROR_NULL_POINTER;
nsresult res;
// if no info was provided about the boundary between context and stream,
// then assume all is stream.
if (!aStartNode)
{
PRInt32 fragLen;
res = GetLengthOfDOMNode(aFragmentAsNode, (PRUint32&)fragLen);
NS_ENSURE_SUCCESS(res, res);
aStartNode = aFragmentAsNode;
aStartOffset = 0;
aEndNode = aFragmentAsNode;
aEndOffset = fragLen;
}
nsCOMPtr<nsIDOMRange> docFragRange =
do_CreateInstance("@mozilla.org/content/range;1");
if (!docFragRange) return NS_ERROR_OUT_OF_MEMORY;
res = docFragRange->SetStart(aStartNode, aStartOffset);
NS_ENSURE_SUCCESS(res, res);
res = docFragRange->SetEnd(aEndNode, aEndOffset);
NS_ENSURE_SUCCESS(res, res);
// now use a subtree iterator over the range to create a list of nodes
nsTrivialFunctor functor;
nsDOMSubtreeIterator iter;
res = iter.Init(docFragRange);
NS_ENSURE_SUCCESS(res, res);
res = iter.AppendList(functor, outNodeList);
return res;
}
nsresult
nsHTMLEditor::GetListAndTableParents(PRBool aEnd,
nsCOMArray<nsIDOMNode>& aListOfNodes,
nsCOMArray<nsIDOMNode>& outArray)
{
PRInt32 listCount = aListOfNodes.Count();
if (listCount <= 0)
return NS_ERROR_FAILURE; // no empty lists, please
// build up list of parents of first (or last) node in list
// that are either lists, or tables.
PRInt32 idx = 0;
if (aEnd) idx = listCount-1;
nsCOMPtr<nsIDOMNode> pNode = aListOfNodes[idx];
while (pNode)
{
if (nsHTMLEditUtils::IsList(pNode) || nsHTMLEditUtils::IsTable(pNode))
{
if (!outArray.AppendObject(pNode))
{
return NS_ERROR_FAILURE;
}
}
nsCOMPtr<nsIDOMNode> parent;
pNode->GetParentNode(getter_AddRefs(parent));
pNode = parent;
}
return NS_OK;
}
nsresult
nsHTMLEditor::DiscoverPartialListsAndTables(nsCOMArray<nsIDOMNode>& aPasteNodes,
nsCOMArray<nsIDOMNode>& aListsAndTables,
PRInt32 *outHighWaterMark)
{
NS_ENSURE_TRUE(outHighWaterMark, NS_ERROR_NULL_POINTER);
*outHighWaterMark = -1;
PRInt32 listAndTableParents = aListsAndTables.Count();
// scan insertion list for table elements (other than table).
PRInt32 listCount = aPasteNodes.Count();
PRInt32 j;
for (j=0; j<listCount; j++)
{
nsCOMPtr<nsIDOMNode> curNode = aPasteNodes[j];
NS_ENSURE_TRUE(curNode, NS_ERROR_FAILURE);
if (nsHTMLEditUtils::IsTableElement(curNode) && !nsHTMLEditUtils::IsTable(curNode))
{
nsCOMPtr<nsIDOMNode> theTable = GetTableParent(curNode);
if (theTable)
{
PRInt32 indexT = aListsAndTables.IndexOf(theTable);
if (indexT >= 0)
{
*outHighWaterMark = indexT;
if (*outHighWaterMark == listAndTableParents-1) break;
}
else
{
break;
}
}
}
if (nsHTMLEditUtils::IsListItem(curNode))
{
nsCOMPtr<nsIDOMNode> theList = GetListParent(curNode);
if (theList)
{
PRInt32 indexL = aListsAndTables.IndexOf(theList);
if (indexL >= 0)
{
*outHighWaterMark = indexL;
if (*outHighWaterMark == listAndTableParents-1) break;
}
else
{
break;
}
}
}
}
return NS_OK;
}
nsresult
nsHTMLEditor::ScanForListAndTableStructure( PRBool aEnd,
nsCOMArray<nsIDOMNode>& aNodes,
nsIDOMNode *aListOrTable,
nsCOMPtr<nsIDOMNode> *outReplaceNode)
{
NS_ENSURE_TRUE(aListOrTable, NS_ERROR_NULL_POINTER);
NS_ENSURE_TRUE(outReplaceNode, NS_ERROR_NULL_POINTER);
*outReplaceNode = 0;
// look upward from first/last paste node for a piece of this list/table
PRInt32 listCount = aNodes.Count(), idx = 0;
if (aEnd) idx = listCount-1;
PRBool bList = nsHTMLEditUtils::IsList(aListOrTable);
nsCOMPtr<nsIDOMNode> pNode = aNodes[idx];
nsCOMPtr<nsIDOMNode> originalNode = pNode;
while (pNode)
{
if ( (bList && nsHTMLEditUtils::IsListItem(pNode)) ||
(!bList && (nsHTMLEditUtils::IsTableElement(pNode) && !nsHTMLEditUtils::IsTable(pNode))) )
{
nsCOMPtr<nsIDOMNode> structureNode;
if (bList) structureNode = GetListParent(pNode);
else structureNode = GetTableParent(pNode);
if (structureNode == aListOrTable)
{
if (bList)
*outReplaceNode = structureNode;
else
*outReplaceNode = pNode;
break;
}
}
nsCOMPtr<nsIDOMNode> parent;
pNode->GetParentNode(getter_AddRefs(parent));
pNode = parent;
}
return NS_OK;
}
nsresult
nsHTMLEditor::ReplaceOrphanedStructure(PRBool aEnd,
nsCOMArray<nsIDOMNode>& aNodeArray,
nsCOMArray<nsIDOMNode>& aListAndTableArray,
PRInt32 aHighWaterMark)
{
nsCOMPtr<nsIDOMNode> curNode = aListAndTableArray[aHighWaterMark];
NS_ENSURE_TRUE(curNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> replaceNode, originalNode;
// find substructure of list or table that must be included in paste.
nsresult res = ScanForListAndTableStructure(aEnd, aNodeArray,
curNode, address_of(replaceNode));
NS_ENSURE_SUCCESS(res, res);
// if we found substructure, paste it instead of it's descendants
if (replaceNode)
{
// postprocess list to remove any descendants of this node
// so that we don't insert them twice.
nsCOMPtr<nsIDOMNode> endpoint;
do
{
endpoint = GetArrayEndpoint(aEnd, aNodeArray);
if (!endpoint) break;
if (nsEditorUtils::IsDescendantOf(endpoint, replaceNode))
aNodeArray.RemoveObject(endpoint);
else
break;
} while(endpoint);
// now replace the removed nodes with the structural parent
if (aEnd) aNodeArray.AppendObject(replaceNode);
else aNodeArray.InsertObjectAt(replaceNode, 0);
}
return NS_OK;
}
nsIDOMNode* nsHTMLEditor::GetArrayEndpoint(PRBool aEnd,
nsCOMArray<nsIDOMNode>& aNodeArray)
{
PRInt32 listCount = aNodeArray.Count();
if (listCount <= 0)
return nsnull;
if (aEnd)
{
return aNodeArray[listCount-1];
}
return aNodeArray[0];
}
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