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Mozilla/mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp
jfrancis%netscape.com dab8e009ec editor fixes for: 
180034 editor should respect the select_all style
183836 New list item should not reset inline styles
179384 Merging blocks via forward delete sends selection to front of document
98434 IME does not work correctly at the last characters in the text field  (patch courtesy of Shotaro Kamio)

r=jfrancis,brade,cmanske   sr=kin


git-svn-id: svn://10.0.0.236/trunk@135560 18797224-902f-48f8-a5cc-f745e15eee43
2002-12-22 01:51:14 +00:00

2455 lines
81 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by 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 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsICaret.h"
#include "nsHTMLEditor.h"
#include "nsHTMLEditRules.h"
#include "nsTextEditUtils.h"
#include "nsHTMLEditUtils.h"
#include "nsWSRunObject.h"
#include "nsEditorEventListeners.h"
#include "nsIDOMText.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMAttr.h"
#include "nsIDocument.h"
#include "nsIDOMEventReceiver.h"
#include "nsIDOMNSEvent.h"
#include "nsIDOMKeyEvent.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMMouseEvent.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsISelectionController.h"
#include "nsIFileChannel.h"
#include "nsIFrameSelection.h" // For TABLESELECTION_ defines
#include "nsIIndependentSelection.h" //domselections answer to frameselection
#include "nsICSSLoader.h"
#include "nsICSSStyleSheet.h"
#include "nsIHTMLContentContainer.h"
#include "nsIStyleSet.h"
#include "nsIDocumentObserver.h"
#include "nsIDocumentStateListener.h"
#include "nsIStyleContext.h"
#include "nsIEnumerator.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsEditorCID.h"
#include "nsLayoutCID.h"
#include "nsIDOMRange.h"
#include "nsIDOMNSRange.h"
#include "nsISupportsArray.h"
#include "nsCOMArray.h"
#include "nsVoidArray.h"
#include "nsFileSpec.h"
#include "nsIFile.h"
#include "nsIURL.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsWidgetsCID.h"
#include "nsIDocumentEncoder.h"
#include "nsIDOMDocumentFragment.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIParser.h"
#include "nsParserCIID.h"
#include "nsIImage.h"
#include "nsAOLCiter.h"
#include "nsInternetCiter.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsLinebreakConverter.h"
#include "nsIHTMLFragmentContentSink.h"
// netwerk
#include "nsIURI.h"
#include "nsNetUtil.h"
// Drag & Drop, Clipboard
#include "nsWidgetsCID.h"
#include "nsIClipboard.h"
#include "nsITransferable.h"
#include "nsIDragService.h"
#include "nsIDOMNSUIEvent.h"
// Misc
#include "TextEditorTest.h"
#include "nsEditorUtils.h"
#include "nsIPrefBranch.h"
#include "nsIPrefService.h"
const PRUnichar nbsp = 160;
static NS_DEFINE_CID(kCRangeCID, NS_RANGE_CID);
static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
// Drag & Drop, Clipboard Support
static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
static NS_DEFINE_CID(kCTransferableCID, NS_TRANSFERABLE_CID);
static NS_DEFINE_CID(kCHTMLFormatConverterCID, NS_HTMLFORMATCONVERTER_CID);
// private clipboard data flavors for html copy/paste
#define kHTMLContext "text/_moz_htmlcontext"
#define kHTMLInfo "text/_moz_htmlinfo"
// some little helpers
static PRInt32 FindPositiveIntegerAfterString(const char *aLeadingString, nsCString &aCStr);
static nsresult RemoveFragComments(nsCString &theStr);
static void RemoveBodyAndHead(nsIDOMNode *aNode);
#if defined(NS_DEBUG) && defined(DEBUG_buster)
static PRBool gNoisy = PR_FALSE;
#else
static const PRBool gNoisy = PR_FALSE;
#endif
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 & aInString)
{
nsAutoString charset;
return LoadHTMLWithCharset(aInString, charset);
}
NS_IMETHODIMP nsHTMLEditor::LoadHTMLWithCharset(const nsAString & aInputString, const nsAString & aCharset)
{
nsresult res = NS_OK;
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;
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, clone;
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)
{
nsAutoString charset;
return InsertHTMLWithCharset(aInString, charset);
}
nsresult
nsHTMLEditor::InsertHTMLWithContext(const nsAString & aInputString,
const nsAString & aContextStr,
const nsAString & aInfoStr)
{
nsAutoString charset;
return InsertHTMLWithCharsetAndContext(aInputString, charset,
aContextStr, aInfoStr);
}
NS_IMETHODIMP
nsHTMLEditor::InsertHTMLWithCharset(const nsAString & aInputString,
const nsAString & aCharset)
{
return InsertHTMLWithCharsetAndContext(aInputString, aCharset,
nsAutoString(), nsAutoString());
}
nsresult
nsHTMLEditor::InsertHTMLWithCharsetAndContext(const nsAString & aInputString,
const nsAString & aCharset,
const nsAString & aContextStr,
const nsAString & aInfoStr)
{
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;
// Get the first range in the selection, for context:
nsCOMPtr<nsIDOMRange> range, clone;
res = selection->GetRangeAt(0, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
res = range->CloneRange(getter_AddRefs(clone));
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNSRange> nsrange (do_QueryInterface(clone));
if (!nsrange)
return NS_ERROR_NO_INTERFACE;
// create a dom document fragment that represents the structure to paste
nsCOMPtr<nsIDOMNode> fragmentAsNode;
PRInt32 rangeStartHint, rangeEndHint;
res = CreateDOMFragmentFromPaste(nsrange, aInputString, aContextStr, aInfoStr,
address_of(fragmentAsNode),
&rangeStartHint, &rangeEndHint);
NS_ENSURE_SUCCESS(res, res);
// make a list of what nodes in docFrag we need to move
nsCOMArray<nsIDOMNode> nodeList;
res = CreateListOfNodesToPaste(fragmentAsNode, nodeList, rangeStartHint, rangeEndHint);
NS_ENSURE_SUCCESS(res, res);
// 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);
}
// colapse 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;
// 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:
PRBool bDidInsert = PR_FALSE;
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++)
{
nsCOMPtr<nsIDOMNode> curNode = nodeList[j];
nsString namestr;
curNode->GetNodeName(namestr);
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 heirarchy, 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_SUCCEEDED(res))
{
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_SUCCEEDED(res))
{
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_SUCCEEDED(res))
{
bDidInsert = PR_TRUE;
lastInsertNode = child;
offsetOfNewNode++;
}
curNode->GetFirstChild(getter_AddRefs(child));
}
}
else
{
// 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 heirarchy.
// try again with the parent of curNode in the paste heirarchy.
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 (bDidInsert)
{
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 dont 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 dont 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))
{
// dont 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;
}
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 (IsEmptyTextContent(content))
{
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 = nsComponentManager::CreateInstance(kCTransferableCID, nsnull,
NS_GET_IID(nsITransferable),
(void**)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
if ((mFlags & eEditorPlaintextMask) == 0) // This should only happen in html editors, not plaintext
{
if (!aHavePrivFlavor)
{
(*aTransferable)->AddDataFlavor(kNativeHTMLMime);
}
(*aTransferable)->AddDataFlavor(kHTMLMime);
(*aTransferable)->AddDataFlavor(kFileMime);
//(*transferable)->AddDataFlavor(kJPEGImageMime);
}
(*aTransferable)->AddDataFlavor(kUnicodeMime);
}
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 += nsCRT::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) +
Substring(aCfhtml, endFragment, endHTML - endFragment));
// 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_ConvertUTF8toUCS2(fragmentUTF8);
const nsAFlatString& cntxtUcs2Str = NS_ConvertUTF8toUCS2(contextUTF8);
// translate platform linebreaks for fragment
PRUnichar* newStr = 0;
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
newStr = 0;
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,
const nsAString & aContextStr,
const nsAString & aInfoStr)
{
nsresult rv = NS_OK;
char* bestFlavor = nsnull;
nsCOMPtr<nsISupports> genericDataObj;
PRUint32 len = 0;
if ( NS_SUCCEEDED(transferable->GetAnyTransferData(&bestFlavor, getter_AddRefs(genericDataObj), &len)) )
{
nsAutoTxnsConserveSelection dontSpazMySelection(this);
nsAutoString flavor, stuffToPaste;
flavor.AssignWithConversion(bestFlavor); // just so we can use flavor.Equals()
#ifdef DEBUG_clipboard
printf("Got flavor [%s]\n", bestFlavor);
#endif
if (flavor.Equals(NS_LITERAL_STRING(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);
}
}
}
else if (flavor.Equals(NS_LITERAL_STRING(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);
}
}
else if (flavor.Equals(NS_LITERAL_STRING(kUnicodeMime)))
{
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 = InsertText(stuffToPaste);
}
}
else if (flavor.Equals(NS_LITERAL_STRING(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.Assign(NS_LITERAL_STRING("<IMG src=\""));
stuffToPaste.Append(NS_ConvertUTF8toUCS2(urltext));
stuffToPaste.Append(NS_LITERAL_STRING("\" alt=\"\" >"));
}
else /* insert as link */
{
stuffToPaste.Assign(NS_LITERAL_STRING("<A href=\""));
stuffToPaste.Append(NS_ConvertUTF8toUCS2(urltext));
stuffToPaste.Append(NS_LITERAL_STRING("\">"));
stuffToPaste.Append(NS_ConvertUTF8toUCS2(urltext));
stuffToPaste.Append(NS_LITERAL_STRING("</A>"));
}
nsAutoEditBatch beginBatching(this);
rv = InsertHTML(stuffToPaste);
}
}
}
}
else if (flavor.Equals(NS_LITERAL_STRING(kJPEGImageMime)))
{
// Insert Image code here
printf("Don't know how to insert an image yet!\n");
//nsIImage* image = (nsIImage *)data;
//NS_RELEASE(image);
rv = NS_ERROR_NOT_IMPLEMENTED; // for now give error code
}
}
nsCRT::free(bestFlavor);
// Try to scroll the selection into view if the paste/drop succeeded
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;
// 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);
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(kCTransferableCID);
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(kCTransferableCID);
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)
#ifdef XP_MAC
mouseEvent->GetAltKey(&userWantsCopy);
#else
mouseEvent->GetCtrlKey(&userWantsCopy);
#endif
// 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;
// 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
nsCOMPtr<nsIDOMNode> newSelectionParent;
PRInt32 newSelectionOffset = 0;
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;
/* Creating a range to store insert position because when
we delete the selection, range gravity will make sure the insertion
point is in the correct place */
nsCOMPtr<nsIDOMRange> destinationRange;
rv = CreateRange(newSelectionParent, newSelectionOffset,newSelectionParent, newSelectionOffset, getter_AddRefs(destinationRange));
if (NS_FAILED(rv))
return rv;
if(!destinationRange)
return NS_ERROR_FAILURE;
// We never have to delete if selection is already collapsed
PRBool deleteSelection = PR_FALSE;
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;//dont bail yet, iterate through them all
nsCOMPtr<nsIDOMNSRange> nsrange(do_QueryInterface(range));
if (NS_FAILED(rv) || !nsrange)
continue;//dont 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;
}
}
}
if (deleteSelection)
{
rv = DeleteSelection(eNone);
if (NS_FAILED(rv)) return rv;
}
// If we deleted the selection because we dropped from another doc,
// then we don't have to relocate the caret (insert at the deletion point)
if (!(deleteSelection && srcdomdoc != destdomdoc))
{
// Move the selection to the point under the mouse cursor
rv = destinationRange->GetStartContainer(getter_AddRefs(newSelectionParent));
if (NS_FAILED(rv))
return rv;
if(!newSelectionParent)
return NS_ERROR_FAILURE;
rv = destinationRange->GetStartOffset(&newSelectionOffset);
if (NS_FAILED(rv))
return rv;
selection->Collapse(newSelectionParent, newSelectionOffset);
}
// We have to figure out whether to delete and relocate caret only once
doPlaceCaret = PR_FALSE;
}
rv = InsertFromTransferable(trans, contextStr, infoStr);
}
return rv;
}
NS_IMETHODIMP nsHTMLEditor::CanDrag(nsIDOMEvent *aDragEvent, PRBool *aCanDrag)
{
if (!aCanDrag)
return NS_ERROR_NULL_POINTER;
/* we really should be checking the XY coordinates of the mouseevent and ensure that
* that particular point is actually within the selection (not just that there is a selection)
*/
*aCanDrag = PR_FALSE;
// KLUDGE to work around bug 50703
// After double click and object property editing,
// we get a spurious drag event
if (mIgnoreSpuriousDragEvent)
{
#ifdef DEBUG_cmanske
printf(" *** IGNORING SPURIOUS DRAG EVENT!\n");
#endif
mIgnoreSpuriousDragEvent = PR_FALSE;
return NS_OK;
}
nsCOMPtr<nsISelection> selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
PRBool isCollapsed;
res = selection->GetIsCollapsed(&isCollapsed);
if (NS_FAILED(res)) return res;
// if we are collapsed, we have no selection so nothing to drag
if (isCollapsed)
return NS_OK;
nsCOMPtr<nsIDOMEventTarget> eventTarget;
nsCOMPtr<nsIDOMNSEvent> nsevent(do_QueryInterface(aDragEvent));
if (nsevent)
{
res = nsevent->GetOriginalTarget(getter_AddRefs(eventTarget));
if (NS_FAILED(res))
{
return res;
}
}
if (eventTarget)
{
nsCOMPtr<nsIDOMNode> eventTargetDomNode = do_QueryInterface(eventTarget);
if (eventTargetDomNode)
{
PRBool isTargetedCorrectly = PR_FALSE;
res = selection->ContainsNode(eventTargetDomNode, PR_FALSE, &isTargetedCorrectly);
if (NS_FAILED(res)) return res;
*aCanDrag = isTargetedCorrectly;
}
}
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::DoDrag(nsIDOMEvent *aDragEvent)
{
nsresult rv;
nsCOMPtr<nsIDOMEventTarget> eventTarget;
rv = aDragEvent->GetTarget(getter_AddRefs(eventTarget));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDOMNode> domnode = do_QueryInterface(eventTarget);
/* get the selection to be dragged */
nsCOMPtr<nsISelection> selection;
rv = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
/* create an array of transferables */
nsCOMPtr<nsISupportsArray> transferableArray;
NS_NewISupportsArray(getter_AddRefs(transferableArray));
if (transferableArray == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
/* get the drag service */
nsCOMPtr<nsIDragService> dragService =
do_GetService("@mozilla.org/widget/dragservice;1", &rv);
if (NS_FAILED(rv)) return rv;
/* create html flavor transferable */
nsCOMPtr<nsITransferable> trans = do_CreateInstance(kCTransferableCID);
NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMDocument> domdoc;
rv = GetDocument(getter_AddRefs(domdoc));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domdoc);
if (doc)
{
// find out if we're a plaintext control or not
PRUint32 editorFlags = 0;
rv = GetFlags(&editorFlags);
if (NS_FAILED(rv)) return rv;
PRBool bIsPlainTextControl = ((editorFlags & eEditorPlaintextMask) != 0);
// get correct mimeType and document encoder flags set
nsAutoString mimeType;
PRUint32 docEncoderFlags = 0;
if (bIsPlainTextControl)
{
docEncoderFlags |= nsIDocumentEncoder::OutputBodyOnly | nsIDocumentEncoder::OutputPreformatted;
mimeType = NS_LITERAL_STRING(kUnicodeMime);
}
else
mimeType = NS_LITERAL_STRING(kHTMLMime);
// set up docEncoder
nsCOMPtr<nsIDocumentEncoder> docEncoder = do_CreateInstance(NS_HTMLCOPY_ENCODER_CONTRACTID);
NS_ENSURE_TRUE(docEncoder, NS_ERROR_FAILURE);
rv = docEncoder->Init(doc, mimeType, docEncoderFlags);
if (NS_FAILED(rv)) return rv;
rv = docEncoder->SetSelection(selection);
if (NS_FAILED(rv)) return rv;
// grab a string
nsAutoString buffer, parents, info;
if (!bIsPlainTextControl)
{
// encode the selection as html with contextual info
rv = docEncoder->EncodeToStringWithContext(buffer, parents, info);
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())
{
nsCOMPtr<nsISupportsString> dataWrapper, contextWrapper, infoWrapper;
dataWrapper = do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
NS_ENSURE_TRUE(dataWrapper, NS_ERROR_FAILURE);
rv = dataWrapper->SetData(buffer);
if (NS_FAILED(rv)) return rv;
if (bIsPlainTextControl)
{
// 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() * 2);
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(kCHTMLFormatConverterCID);
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() * 2);
if (NS_FAILED(rv)) return rv;
if (parents.Length())
{
// Add the htmlcontext DataFlavor to the transferable
trans->AddDataFlavor(kHTMLContext);
genericDataObj = do_QueryInterface(contextWrapper);
trans->SetTransferData(kHTMLContext, genericDataObj, parents.Length()*2);
}
if (info.Length())
{
// Add the htmlinfo DataFlavor to the transferable
trans->AddDataFlavor(kHTMLInfo);
genericDataObj = do_QueryInterface(infoWrapper);
trans->SetTransferData(kHTMLInfo, genericDataObj, info.Length()*2);
}
}
/* add the transferable to the array */
rv = transferableArray->AppendElement(trans);
if (NS_FAILED(rv)) return rv;
/* invoke drag */
unsigned int flags;
// in some cases we'll want to cut rather than copy... hmmmmm...
flags = nsIDragService::DRAGDROP_ACTION_COPY + nsIDragService::DRAGDROP_ACTION_MOVE;
rv = dragService->InvokeDragSession(domnode, transferableArray, nsnull, flags);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDOMNSEvent> nsevent(do_QueryInterface(aDragEvent));
if (nsevent)
{
nsevent->PreventBubble();
}
}
}
return rv;
}
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;
nsCOMPtr<nsISupportsArray> flavArray;
nsresult res = NS_NewISupportsArray(getter_AddRefs(flavArray));
if (NS_FAILED(res)) return PR_FALSE;
nsCOMPtr<nsISupportsCString> contextString = do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
if (!contextString) return PR_FALSE;
contextString->SetData(NS_LITERAL_CSTRING(kHTMLContext));
flavArray->AppendElement(contextString);
if (NS_SUCCEEDED(aClipboard->HasDataMatchingFlavors (flavArray, nsIClipboard::kGlobalClipboard, &bHavePrivateHTMLFlavor )))
return bHavePrivateHTMLFlavor;
return PR_FALSE;
}
NS_IMETHODIMP nsHTMLEditor::Paste(PRInt32 aSelectionType)
{
ForceCompositionEnd();
// Get Clipboard Service
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &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(kCTransferableCID);
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(kCTransferableCID);
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);
}
}
rv = InsertFromTransferable(trans, contextStr, infoStr);
}
}
return rv;
}
//
// 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(kCClipboardCID, &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())
{
rv = InsertFromTransferable(trans, nsString(), nsString());
}
}
return rv;
}
NS_IMETHODIMP nsHTMLEditor::CanPaste(PRInt32 aSelectionType, PRBool *aCanPaste)
{
if (!aCanPaste)
return NS_ERROR_NULL_POINTER;
*aCanPaste = PR_FALSE;
// can't paste if readonly
if (!IsModifiable())
return NS_OK;
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
if (NS_FAILED(rv)) return rv;
// the flavors that we can deal with
const char* const textEditorFlavors[] = { kUnicodeMime, nsnull };
const char* const htmlEditorFlavors[] = { kHTMLMime, kJPEGImageMime, nsnull };
nsCOMPtr<nsISupportsArray> flavorsList;
rv = nsComponentManager::CreateInstance(NS_SUPPORTSARRAY_CONTRACTID, nsnull,
NS_GET_IID(nsISupportsArray), getter_AddRefs(flavorsList));
if (NS_FAILED(rv)) return rv;
PRUint32 editorFlags;
GetFlags(&editorFlags);
// add the flavors for all editors
for (const char* const* flavor = textEditorFlavors; *flavor; flavor++)
{
nsCOMPtr<nsISupportsCString> flavorString = do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
if (flavorString)
{
flavorString->SetData(nsDependentCString(*flavor));
flavorsList->AppendElement(flavorString);
}
}
// add the HTML-editor only flavors
if ((editorFlags & eEditorPlaintextMask) == 0)
{
for (const char* const* htmlFlavor = htmlEditorFlavors;
*htmlFlavor;
htmlFlavor++)
{
nsCOMPtr<nsISupportsCString> flavorString = do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
if (flavorString)
{
flavorString->SetData(nsDependentCString(*htmlFlavor));
flavorsList->AppendElement(flavorString);
}
}
}
PRBool haveFlavors;
rv = clipboard->HasDataMatchingFlavors(flavorsList, aSelectionType, &haveFlavors);
if (NS_FAILED(rv)) return rv;
*aCanPaste = haveFlavors;
return NS_OK;
}
//
// HTML PasteAsQuotation: Paste in a blockquote type=cite
//
NS_IMETHODIMP nsHTMLEditor::PasteAsQuotation(PRInt32 aSelectionType)
{
if (mFlags & eEditorPlaintextMask)
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(kCClipboardCID, &rv));
if (NS_FAILED(rv)) return rv;
// Create generic Transferable for getting the data
nsCOMPtr<nsITransferable> trans;
rv = nsComponentManager::CreateInstance(kCTransferableCID, nsnull,
NS_GET_IID(nsITransferable),
(void**) getter_AddRefs(trans));
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;
}
#ifdef DEBUG_clipboard
printf("Got flavor [%s]\n", flav);
#endif
nsAutoString flavor; flavor.AssignWithConversion(flav);
nsAutoString stuffToPaste;
if (flavor.Equals(NS_LITERAL_STRING(kUnicodeMime)))
{
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 = InsertAsPlaintextQuotation(stuffToPaste, PR_TRUE, 0);
}
}
nsCRT::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_LossyConvertUCS2toASCII(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 (mFlags & eEditorPlaintextMask)
return InsertAsPlaintextQuotation(aQuotedText, PR_TRUE, aNodeInserted);
nsAutoString citation;
nsAutoString charset;
return InsertAsCitedQuotation(aQuotedText, citation, PR_FALSE,
charset, 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;
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.Assign(NS_LITERAL_STRING("pre"));
else
tag.Assign(NS_LITERAL_STRING("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::InsertAsCitedQuotation(const nsAString & aQuotedText,
const nsAString & aCitation,
PRBool aInsertHTML,
const nsAString & aCharset,
nsIDOMNode **aNodeInserted)
{
// Don't let anyone insert html into a "plaintext" editor:
if (mFlags & eEditorPlaintextMask)
{
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.Length() > 0)
newElement->SetAttribute(citestr, aCitation);
// Set the selection inside the blockquote so aQuotedText will go there:
selection->Collapse(newNode, 0);
}
if (aInsertHTML)
res = LoadHTMLWithCharset(aQuotedText, aCharset);
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, NS_LITERAL_STRING("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));
}
}
nsresult nsHTMLEditor::CreateDOMFragmentFromPaste(nsIDOMNSRange *aNSRange,
const nsAString & aInputString,
const nsAString & aContextStr,
const nsAString & aInfoStr,
nsCOMPtr<nsIDOMNode> *outFragNode,
PRInt32 *outRangeStartHint,
PRInt32 *outRangeEndHint)
{
if (!outFragNode || !outRangeStartHint || !outRangeEndHint || !aNSRange)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMDocumentFragment> docfrag;
nsCOMPtr<nsIDOMNode> contextAsNode, tmp;
nsresult res = NS_OK;
// if we have context info, create a fragment for that
nsCOMPtr<nsIDOMNode> contextLeaf, junk;
PRInt32 contextDepth = 0;
if (aContextStr.Length())
{
res = ParseFragment(aContextStr, 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);
// cache the deepest leaf in the context
tmp = contextAsNode;
while (tmp)
{
contextDepth++;
contextLeaf = tmp;
contextLeaf->GetFirstChild(getter_AddRefs(tmp));
}
}
// create fragment for pasted html
res = ParseFragment(aInputString, 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;
// no longer have fragmentAsNode in tree
contextDepth--;
}
res = StripFormattingNodes(*outFragNode, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
// get the infoString contents
nsAutoString numstr1, numstr2;
if (aInfoStr.Length())
{
PRInt32 err, sep;
sep = aInfoStr.FindChar((PRUnichar)',');
numstr1 = Substring(aInfoStr, 0, sep);
numstr2 = Substring(aInfoStr, sep+1, aInfoStr.Length() - (sep+1));
*outRangeStartHint = numstr1.ToInteger(&err) + contextDepth;
*outRangeEndHint = numstr2.ToInteger(&err) + contextDepth;
}
else
{
*outRangeStartHint = contextDepth;
*outRangeEndHint = contextDepth;
}
return res;
}
nsresult nsHTMLEditor::ParseFragment(const nsAString &aFragStr, nsCOMPtr<nsIDOMNode> *outNode)
{
// create the parser to do the conversion.
nsCOMPtr<nsIParser> parser;
nsresult res = nsComponentManager::CreateInstance(kCParserCID, nsnull, NS_GET_IID(nsIParser),
getter_AddRefs(parser));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(parser, NS_ERROR_FAILURE);
// create the html fragment sink
nsCOMPtr<nsIContentSink> sink;
sink = do_CreateInstance(NS_HTMLFRAGMENTSINK2_CONTRACTID);
NS_ENSURE_TRUE(sink, NS_ERROR_FAILURE);
nsCOMPtr<nsIHTMLFragmentContentSink> fragSink(do_QueryInterface(sink));
NS_ENSURE_TRUE(fragSink, NS_ERROR_FAILURE);
// parse the fragment
parser->SetContentSink(sink);
parser->Parse(aFragStr, 0, NS_LITERAL_CSTRING("text/html"), PR_FALSE, PR_TRUE, eDTDMode_fragment);
// get the fragment node
nsCOMPtr<nsIDOMDocumentFragment> contextfrag;
res = fragSink->GetFragment(getter_AddRefs(contextfrag));
NS_ENSURE_SUCCESS(res, res);
*outNode = do_QueryInterface(contextfrag);
return res;
}
nsresult nsHTMLEditor::CreateListOfNodesToPaste(nsIDOMNode *aFragmentAsNode,
nsCOMArray<nsIDOMNode>& outNodeList,
PRInt32 aRangeStartHint,
PRInt32 aRangeEndHint)
{
if (!aFragmentAsNode)
return NS_ERROR_NULL_POINTER;
// First off create a range over the portion of docFrag indicated by
// the range hints.
nsCOMPtr<nsIDOMRange> docFragRange;
docFragRange = do_CreateInstance(kCRangeCID);
nsCOMPtr<nsIDOMNode> startParent, endParent, tmp;
PRInt32 endOffset;
startParent = aFragmentAsNode;
while (aRangeStartHint > 0)
{
startParent->GetFirstChild(getter_AddRefs(tmp));
startParent = tmp;
aRangeStartHint--;
NS_ENSURE_TRUE(startParent, NS_ERROR_FAILURE);
}
endParent = aFragmentAsNode;
while (aRangeEndHint > 0)
{
endParent->GetLastChild(getter_AddRefs(tmp));
endParent = tmp;
aRangeEndHint--;
NS_ENSURE_TRUE(endParent, NS_ERROR_FAILURE);
}
nsresult res = GetLengthOfDOMNode(endParent, (PRUint32&)endOffset);
NS_ENSURE_SUCCESS(res, res);
res = docFragRange->SetStart(startParent, 0);
NS_ENSURE_SUCCESS(res, res);
res = docFragRange->SetEnd(endParent, endOffset);
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 dont 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)
{
if (aEnd)
{
PRInt32 listCount = aNodeArray.Count();
if (listCount <= 0) return nsnull;
else return aNodeArray[listCount-1];
}
else
{
return aNodeArray[0];
}
}
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