/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=2 sw=2 et tw=78: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/HTMLEditor.h" #include #include "HTMLEditUtils.h" #include "TextEditRules.h" #include "TextEditUtils.h" #include "WSRunObject.h" #include "mozilla/dom/DataTransfer.h" #include "mozilla/dom/DocumentFragment.h" #include "mozilla/dom/DOMStringList.h" #include "mozilla/dom/Selection.h" #include "mozilla/ArrayUtils.h" #include "mozilla/Base64.h" #include "mozilla/BasicEvents.h" #include "mozilla/EditorUtils.h" #include "mozilla/OwningNonNull.h" #include "mozilla/Preferences.h" #include "mozilla/SelectionState.h" #include "nsAString.h" #include "nsCOMPtr.h" #include "nsCRTGlue.h" // for CRLF #include "nsComponentManagerUtils.h" #include "nsIScriptError.h" #include "nsContentUtils.h" #include "nsDebug.h" #include "nsDependentSubstring.h" #include "nsError.h" #include "nsGkAtoms.h" #include "nsIClipboard.h" #include "nsIContent.h" #include "nsIContentFilter.h" #include "nsIDOMComment.h" #include "nsIDOMDocument.h" #include "nsIDOMDocumentFragment.h" #include "nsIDOMElement.h" #include "nsIDOMHTMLAnchorElement.h" #include "nsIDOMHTMLEmbedElement.h" #include "nsIDOMHTMLFrameElement.h" #include "nsIDOMHTMLIFrameElement.h" #include "nsIDOMHTMLImageElement.h" #include "nsIDOMHTMLInputElement.h" #include "nsIDOMHTMLLinkElement.h" #include "nsIDOMHTMLObjectElement.h" #include "nsIDOMHTMLScriptElement.h" #include "nsIDOMNode.h" #include "nsIDocument.h" #include "nsIEditor.h" #include "nsIEditorIMESupport.h" #include "nsIEditorMailSupport.h" #include "nsIEditRules.h" #include "nsIFile.h" #include "nsIInputStream.h" #include "nsIMIMEService.h" #include "nsNameSpaceManager.h" #include "nsINode.h" #include "nsIParserUtils.h" #include "nsIPlaintextEditor.h" #include "nsISupportsImpl.h" #include "nsISupportsPrimitives.h" #include "nsISupportsUtils.h" #include "nsITransferable.h" #include "nsIURI.h" #include "nsIVariant.h" #include "nsLinebreakConverter.h" #include "nsLiteralString.h" #include "nsNetUtil.h" #include "nsRange.h" #include "nsReadableUtils.h" #include "nsServiceManagerUtils.h" #include "nsStreamUtils.h" #include "nsString.h" #include "nsStringFwd.h" #include "nsStringIterator.h" #include "nsSubstringTuple.h" #include "nsTreeSanitizer.h" #include "nsXPCOM.h" #include "nscore.h" #include "nsContentUtils.h" class nsIAtom; class nsILoadContext; class nsISupports; namespace mozilla { using namespace dom; #define kInsertCookie "_moz_Insert Here_moz_" // some little helpers static bool FindIntegerAfterString(const char* aLeadingString, nsCString& aCStr, int32_t& foundNumber); static nsresult RemoveFragComments(nsCString& theStr); static void RemoveBodyAndHead(nsINode& aNode); static nsresult FindTargetNode(nsIDOMNode* aStart, nsCOMPtr& aResult); nsresult HTMLEditor::LoadHTML(const nsAString& aInputString) { NS_ENSURE_TRUE(mRules, NS_ERROR_NOT_INITIALIZED); // force IME commit; set up rules sniffing and batching ForceCompositionEnd(); AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::loadHTML, nsIEditor::eNext); // Get selection RefPtr selection = GetSelection(); NS_ENSURE_STATE(selection); TextRulesInfo ruleInfo(EditAction::loadHTML); bool cancel, handled; // Protect the edit rules object from dying nsCOMPtr rules(mRules); nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); NS_ENSURE_SUCCESS(rv, rv); if (cancel) { return NS_OK; // rules canceled the operation } if (!handled) { // Delete Selection, but only if it isn't collapsed, see bug #106269 if (!selection->Collapsed()) { rv = DeleteSelection(eNone, eStrip); NS_ENSURE_SUCCESS(rv, rv); } // Get the first range in the selection, for context: RefPtr range = selection->GetRangeAt(0); NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER); // create fragment for pasted html nsCOMPtr docfrag; rv = range->CreateContextualFragment(aInputString, getter_AddRefs(docfrag)); NS_ENSURE_SUCCESS(rv, rv); // put the fragment into the document nsCOMPtr parent; rv = range->GetStartContainer(getter_AddRefs(parent)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); int32_t childOffset; rv = range->GetStartOffset(&childOffset); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr nodeToInsert; docfrag->GetFirstChild(getter_AddRefs(nodeToInsert)); while (nodeToInsert) { rv = InsertNode(nodeToInsert, parent, childOffset++); NS_ENSURE_SUCCESS(rv, rv); docfrag->GetFirstChild(getter_AddRefs(nodeToInsert)); } } return rules->DidDoAction(selection, &ruleInfo, rv); } NS_IMETHODIMP HTMLEditor::InsertHTML(const nsAString& aInString) { const nsAFlatString& empty = EmptyString(); return InsertHTMLWithContext(aInString, empty, empty, empty, nullptr, nullptr, 0, true); } nsresult HTMLEditor::InsertHTMLWithContext(const nsAString& aInputString, const nsAString& aContextStr, const nsAString& aInfoStr, const nsAString& aFlavor, nsIDOMDocument* aSourceDoc, nsIDOMNode* aDestNode, int32_t aDestOffset, bool aDeleteSelection) { return DoInsertHTMLWithContext(aInputString, aContextStr, aInfoStr, aFlavor, aSourceDoc, aDestNode, aDestOffset, aDeleteSelection, /* trusted input */ true, /* clear style */ false); } nsresult HTMLEditor::DoInsertHTMLWithContext(const nsAString& aInputString, const nsAString& aContextStr, const nsAString& aInfoStr, const nsAString& aFlavor, nsIDOMDocument* aSourceDoc, nsIDOMNode* aDestNode, int32_t aDestOffset, bool aDeleteSelection, bool aTrustedInput, bool aClearStyle) { NS_ENSURE_TRUE(mRules, NS_ERROR_NOT_INITIALIZED); // Prevent the edit rules object from dying nsCOMPtr rules(mRules); // force IME commit; set up rules sniffing and batching ForceCompositionEnd(); AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::htmlPaste, nsIEditor::eNext); // Get selection RefPtr selection = GetSelection(); NS_ENSURE_STATE(selection); // create a dom document fragment that represents the structure to paste nsCOMPtr fragmentAsNode, streamStartParent, streamEndParent; int32_t streamStartOffset = 0, streamEndOffset = 0; nsresult rv = CreateDOMFragmentFromPaste(aInputString, aContextStr, aInfoStr, address_of(fragmentAsNode), address_of(streamStartParent), address_of(streamEndParent), &streamStartOffset, &streamEndOffset, aTrustedInput); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr targetNode; int32_t targetOffset=0; if (!aDestNode) { // if caller didn't provide the destination/target node, // fetch the paste insertion point from our selection rv = GetStartNodeAndOffset(selection, getter_AddRefs(targetNode), &targetOffset); NS_ENSURE_SUCCESS(rv, rv); if (!targetNode || !IsEditable(targetNode)) { return NS_ERROR_FAILURE; } } else { targetNode = aDestNode; targetOffset = aDestOffset; } bool doContinue = true; rv = 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(rv, rv); NS_ENSURE_TRUE(doContinue, 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. AutoTrackDOMPoint tracker(mRangeUpdater, &targetNode, &targetOffset); rv = DeleteSelection(eNone, eStrip); NS_ENSURE_SUCCESS(rv, rv); } rv = selection->Collapse(targetNode, targetOffset); NS_ENSURE_SUCCESS(rv, rv); } // 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 nsTArray> nodeList; nsCOMPtr fragmentAsNodeNode = do_QueryInterface(fragmentAsNode); NS_ENSURE_STATE(fragmentAsNodeNode || !fragmentAsNode); nsCOMPtr streamStartParentNode = do_QueryInterface(streamStartParent); NS_ENSURE_STATE(streamStartParentNode || !streamStartParent); nsCOMPtr streamEndParentNode = do_QueryInterface(streamEndParent); NS_ENSURE_STATE(streamEndParentNode || !streamEndParent); CreateListOfNodesToPaste(*static_cast(fragmentAsNodeNode.get()), nodeList, streamStartParentNode, streamStartOffset, streamEndParentNode, streamEndOffset); if (nodeList.IsEmpty()) { // We aren't inserting anything, but if aDeleteSelection is set, we do want // to delete everything. if (aDeleteSelection) { return DeleteSelection(eNone, eStrip); } return NS_OK; } // Are there any table elements in the list? // node and offset for insertion nsCOMPtr parentNode; int32_t offsetOfNewNode; // check for table cell selection mode bool cellSelectionMode = false; nsCOMPtr cell; rv = GetFirstSelectedCell(nullptr, getter_AddRefs(cell)); if (NS_SUCCEEDED(rv) && cell) { cellSelectionMode = 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. if (!HTMLEditUtils::IsTableElement(nodeList[0])) { cellSelectionMode = false; } } if (!cellSelectionMode) { rv = DeleteSelectionAndPrepareToCreateNode(); NS_ENSURE_SUCCESS(rv, rv); if (aClearStyle) { // pasting does not inherit local inline styles nsCOMPtr tmpNode = selection->GetAnchorNode(); int32_t tmpOffset = static_cast(selection->AnchorOffset()); rv = ClearStyle(address_of(tmpNode), &tmpOffset, nullptr, nullptr); NS_ENSURE_SUCCESS(rv, rv); } } else { // Delete whole cells: we will replace with new table content. // Braces for artificial block to scope AutoSelectionRestorer. // Save current selection since DeleteTableCell() perturbs it. { AutoSelectionRestorer selectionRestorer(selection, this); rv = DeleteTableCell(1); NS_ENSURE_SUCCESS(rv, rv); } // collapse selection to beginning of deleted table content selection->CollapseToStart(); } // give rules a chance to handle or cancel TextRulesInfo ruleInfo(EditAction::insertElement); bool cancel, handled; rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); NS_ENSURE_SUCCESS(rv, rv); if (cancel) { return NS_OK; // rules canceled the operation } if (!handled) { // The rules code (WillDoAction above) might have changed the selection. // refresh our memory... rv = GetStartNodeAndOffset(selection, getter_AddRefs(parentNode), &offsetOfNewNode); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(parentNode, NS_ERROR_FAILURE); // 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. WSRunObject wsObj(this, parentNode, offsetOfNewNode); if (wsObj.mEndReasonNode && TextEditUtils::IsBreak(wsObj.mEndReasonNode) && !IsVisBreak(wsObj.mEndReasonNode)) { rv = DeleteNode(wsObj.mEndReasonNode); NS_ENSURE_SUCCESS(rv, rv); } // Remember if we are in a link. bool bStartedInLink = IsInLink(parentNode); // Are we in a text node? If so, split it. if (IsTextNode(parentNode)) { nsCOMPtr parentContent = do_QueryInterface(parentNode); NS_ENSURE_STATE(parentContent || !parentNode); offsetOfNewNode = SplitNodeDeep(*parentContent, *parentContent, offsetOfNewNode); NS_ENSURE_STATE(offsetOfNewNode != -1); nsCOMPtr temp; rv = parentNode->GetParentNode(getter_AddRefs(temp)); NS_ENSURE_SUCCESS(rv, rv); 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. nsTArray> startListAndTableArray; GetListAndTableParents(StartOrEnd::start, nodeList, startListAndTableArray); // remember number of lists and tables above us int32_t highWaterMark = -1; if (!startListAndTableArray.IsEmpty()) { highWaterMark = DiscoverPartialListsAndTables(nodeList, startListAndTableArray); } // 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) { ReplaceOrphanedStructure(StartOrEnd::start, nodeList, startListAndTableArray, highWaterMark); } // Now go through the same process again for the end of the paste node list. nsTArray> endListAndTableArray; GetListAndTableParents(StartOrEnd::end, nodeList, endListAndTableArray); highWaterMark = -1; // remember number of lists and tables above us if (!endListAndTableArray.IsEmpty()) { highWaterMark = DiscoverPartialListsAndTables(nodeList, endListAndTableArray); } // don't orphan partial list or table structure if (highWaterMark >= 0) { ReplaceOrphanedStructure(StartOrEnd::end, nodeList, endListAndTableArray, highWaterMark); } // Loop over the node list and paste the nodes: nsCOMPtr parentBlock, lastInsertNode, insertedContextParent; nsCOMPtr parentNodeNode = do_QueryInterface(parentNode); NS_ENSURE_STATE(parentNodeNode || !parentNode); if (IsBlockNode(parentNodeNode)) { parentBlock = parentNode; } else { parentBlock = GetBlockNodeParent(parentNode); } int32_t listCount = nodeList.Length(); for (int32_t j = 0; j < listCount; j++) { bool bDidInsert = false; nsCOMPtr curNode = nodeList[j]->AsDOMNode(); NS_ENSURE_TRUE(curNode, NS_ERROR_FAILURE); NS_ENSURE_TRUE(curNode != fragmentAsNode, NS_ERROR_FAILURE); NS_ENSURE_TRUE(!TextEditUtils::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 (EditorUtils::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 (HTMLEditUtils::IsTableRow(curNode) && HTMLEditUtils::IsTableRow(parentNode) && (HTMLEditUtils::IsTable(curNode) || HTMLEditUtils::IsTable(parentNode))) { nsCOMPtr child; curNode->GetFirstChild(getter_AddRefs(child)); while (child) { rv = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, true); if (NS_FAILED(rv)) { break; } bDidInsert = 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 (HTMLEditUtils::IsList(curNode) && (HTMLEditUtils::IsList(parentNode) || HTMLEditUtils::IsListItem(parentNode))) { nsCOMPtr child, tmp; curNode->GetFirstChild(getter_AddRefs(child)); while (child) { if (HTMLEditUtils::IsListItem(child) || HTMLEditUtils::IsList(child)) { // Check if we are pasting into empty list item. If so // delete it and paste into parent list instead. if (HTMLEditUtils::IsListItem(parentNode)) { bool isEmpty; rv = IsEmptyNode(parentNode, &isEmpty, true); if (NS_SUCCEEDED(rv) && isEmpty) { int32_t newOffset; nsCOMPtr listNode = GetNodeLocation(parentNode, &newOffset); if (listNode) { DeleteNode(parentNode); parentNode = listNode; offsetOfNewNode = newOffset; } } } rv = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, true); if (NS_FAILED(rv)) { break; } bDidInsert = true; lastInsertNode = child; offsetOfNewNode++; } else { curNode->RemoveChild(child, getter_AddRefs(tmp)); } curNode->GetFirstChild(getter_AddRefs(child)); } } else if (parentBlock && HTMLEditUtils::IsPre(parentBlock) && HTMLEditUtils::IsPre(curNode)) { // Check for pre's going into pre's. nsCOMPtr child; curNode->GetFirstChild(getter_AddRefs(child)); while (child) { rv = InsertNodeAtPoint(child, address_of(parentNode), &offsetOfNewNode, true); if (NS_FAILED(rv)) { break; } bDidInsert = true; lastInsertNode = child; offsetOfNewNode++; curNode->GetFirstChild(getter_AddRefs(child)); } } if (!bDidInsert || NS_FAILED(rv)) { // try to insert rv = InsertNodeAtPoint(curNode, address_of(parentNode), &offsetOfNewNode, true); if (NS_SUCCEEDED(rv)) { bDidInsert = 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 parent; while (NS_FAILED(rv) && curNode) { curNode->GetParentNode(getter_AddRefs(parent)); if (parent && !TextEditUtils::IsBody(parent)) { rv = InsertNodeAtPoint(parent, address_of(parentNode), &offsetOfNewNode, true); if (NS_SUCCEEDED(rv)) { bDidInsert = true; insertedContextParent = parent; lastInsertNode = GetChildAt(parentNode, offsetOfNewNode); } } curNode = parent; } } if (lastInsertNode) { parentNode = GetNodeLocation(lastInsertNode, &offsetOfNewNode); 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 selNode, tmp, highTable; int32_t selOffset; // but don't cross tables if (!HTMLEditUtils::IsTable(lastInsertNode)) { nsCOMPtr lastInsertNode_ = do_QueryInterface(lastInsertNode); NS_ENSURE_STATE(lastInsertNode_ || !lastInsertNode); selNode = GetAsDOMNode(GetLastEditableLeaf(*lastInsertNode_)); tmp = selNode; while (tmp && tmp != lastInsertNode) { if (HTMLEditUtils::IsTable(tmp)) { highTable = tmp; } nsCOMPtr parent = tmp; tmp->GetParentNode(getter_AddRefs(parent)); tmp = parent; } if (highTable) { selNode = highTable; } } if (!selNode) { selNode = lastInsertNode; } if (IsTextNode(selNode) || (IsContainer(selNode) && !HTMLEditUtils::IsTable(selNode))) { rv = GetLengthOfDOMNode(selNode, (uint32_t&)selOffset); NS_ENSURE_SUCCESS(rv, rv); } else { // We need to find a container for selection. Look up. tmp = selNode; selNode = GetNodeLocation(tmp, &selOffset); // selNode might be null in case a mutation listener removed // the stuff we just inserted from the DOM. NS_ENSURE_STATE(selNode); ++selOffset; // want to be *after* last leaf node in paste } // make sure we don't end up with selection collapsed after an invisible break node WSRunObject wsRunObj(this, selNode, selOffset); nsCOMPtr visNode; int32_t outVisOffset=0; WSType visType; nsCOMPtr selNode_(do_QueryInterface(selNode)); wsRunObj.PriorVisibleNode(selNode_, selOffset, address_of(visNode), &outVisOffset, &visType); if (visType == WSType::br) { // 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 WSRunObject's state. if (!IsVisBreak(wsRunObj.mStartReasonNode)) { // don't leave selection past an invisible break; // reset {selNode,selOffset} to point before break selNode = GetNodeLocation(GetAsDOMNode(wsRunObj.mStartReasonNode), &selOffset); // we want to be inside any inline style prior to break WSRunObject wsRunObj(this, selNode, selOffset); selNode_ = do_QueryInterface(selNode); wsRunObj.PriorVisibleNode(selNode_, selOffset, address_of(visNode), &outVisOffset, &visType); if (visType == WSType::text || visType == WSType::normalWS) { selNode = GetAsDOMNode(visNode); selOffset = outVisOffset; // PriorVisibleNode already set offset to _after_ the text or ws } else if (visType == WSType::special) { // prior visible thing is an image or some other non-text thingy. // We want to be right after it. selNode = GetNodeLocation(GetAsDOMNode(wsRunObj.mStartReasonNode), &selOffset); ++selOffset; } } } selection->Collapse(selNode, selOffset); // if we just pasted a link, discontinue link style nsCOMPtr 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 linkContent = do_QueryInterface(link); NS_ENSURE_STATE(linkContent || !link); nsCOMPtr selContent = do_QueryInterface(selNode); NS_ENSURE_STATE(selContent || !selNode); nsCOMPtr leftLink; SplitNodeDeep(*linkContent, *selContent, selOffset, EmptyContainers::no, getter_AddRefs(leftLink)); if (leftLink) { selNode = GetNodeLocation(GetAsDOMNode(leftLink), &selOffset); selection->Collapse(selNode, selOffset+1); } } } } return rules->DidDoAction(selection, &ruleInfo, rv); } NS_IMETHODIMP HTMLEditor::AddInsertionListener(nsIContentFilter* aListener) { NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER); // don't let a listener be added more than once if (!mContentFilters.Contains(aListener)) { mContentFilters.AppendElement(*aListener); } return NS_OK; } NS_IMETHODIMP HTMLEditor::RemoveInsertionListener(nsIContentFilter* aListener) { NS_ENSURE_TRUE(aListener, NS_ERROR_FAILURE); mContentFilters.RemoveElement(aListener); return NS_OK; } nsresult HTMLEditor::DoContentFilterCallback(const nsAString& aFlavor, nsIDOMDocument* sourceDoc, bool aWillDeleteSelection, nsIDOMNode** aFragmentAsNode, nsIDOMNode** aFragStartNode, int32_t* aFragStartOffset, nsIDOMNode** aFragEndNode, int32_t* aFragEndOffset, nsIDOMNode** aTargetNode, int32_t* aTargetOffset, bool* aDoContinue) { *aDoContinue = true; for (auto& listener : mContentFilters) { if (!*aDoContinue) { break; } listener->NotifyOfInsertion(aFlavor, nullptr, sourceDoc, aWillDeleteSelection, aFragmentAsNode, aFragStartNode, aFragStartOffset, aFragEndNode, aFragEndOffset, aTargetNode, aTargetOffset, aDoContinue); } return NS_OK; } bool HTMLEditor::IsInLink(nsIDOMNode* aNode, nsCOMPtr* outLink) { NS_ENSURE_TRUE(aNode, false); if (outLink) { *outLink = nullptr; } nsCOMPtr tmp, node = aNode; while (node) { if (HTMLEditUtils::IsLink(node)) { if (outLink) { *outLink = node; } return true; } tmp = node; tmp->GetParentNode(getter_AddRefs(node)); } return false; } nsresult HTMLEditor::StripFormattingNodes(nsIContent& aNode, bool aListOnly) { if (aNode.TextIsOnlyWhitespace()) { nsCOMPtr parent = aNode.GetParentNode(); if (parent) { if (!aListOnly || HTMLEditUtils::IsList(parent)) { ErrorResult rv; parent->RemoveChild(aNode, rv); return rv.StealNSResult(); } return NS_OK; } } if (!aNode.IsHTMLElement(nsGkAtoms::pre)) { nsCOMPtr child = aNode.GetLastChild(); while (child) { nsCOMPtr previous = child->GetPreviousSibling(); nsresult rv = StripFormattingNodes(*child, aListOnly); NS_ENSURE_SUCCESS(rv, rv); child = previous.forget(); } } return NS_OK; } NS_IMETHODIMP HTMLEditor::PrepareTransferable(nsITransferable** aTransferable) { return NS_OK; } nsresult HTMLEditor::PrepareHTMLTransferable(nsITransferable** aTransferable) { // Create generic Transferable for getting the data nsresult rv = CallCreateInstance("@mozilla.org/widget/transferable;1", aTransferable); NS_ENSURE_SUCCESS(rv, rv); // Get the nsITransferable interface for getting the data from the clipboard if (aTransferable) { nsCOMPtr destdoc = GetDocument(); nsILoadContext* loadContext = destdoc ? destdoc->GetLoadContext() : nullptr; (*aTransferable)->Init(loadContext); // 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()) { (*aTransferable)->AddDataFlavor(kNativeHTMLMime); (*aTransferable)->AddDataFlavor(kHTMLMime); (*aTransferable)->AddDataFlavor(kFileMime); switch (Preferences::GetInt("clipboard.paste_image_type", 1)) { case 0: // prefer JPEG over PNG over GIF encoding (*aTransferable)->AddDataFlavor(kJPEGImageMime); (*aTransferable)->AddDataFlavor(kJPGImageMime); (*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(kJPGImageMime); (*aTransferable)->AddDataFlavor(kGIFImageMime); break; case 2: // prefer GIF over JPEG over PNG encoding (*aTransferable)->AddDataFlavor(kGIFImageMime); (*aTransferable)->AddDataFlavor(kJPEGImageMime); (*aTransferable)->AddDataFlavor(kJPGImageMime); (*aTransferable)->AddDataFlavor(kPNGImageMime); break; } } (*aTransferable)->AddDataFlavor(kUnicodeMime); (*aTransferable)->AddDataFlavor(kMozTextInternal); } return NS_OK; } bool FindIntegerAfterString(const char* aLeadingString, nsCString& aCStr, int32_t& foundNumber) { // first obtain offsets from cfhtml str int32_t numFront = aCStr.Find(aLeadingString); if (numFront == -1) { return false; } numFront += strlen(aLeadingString); int32_t numBack = aCStr.FindCharInSet(CRLF, numFront); if (numBack == -1) { return false; } nsAutoCString numStr(Substring(aCStr, numFront, numBack-numFront)); nsresult errorCode; foundNumber = numStr.ToInteger(&errorCode); return true; } nsresult RemoveFragComments(nsCString& aStr) { // remove the StartFragment/EndFragment comments from the str, if present int32_t startCommentIndx = aStr.Find("", false, startCommentIndx); if (startCommentEnd > startCommentIndx) { aStr.Cut(startCommentIndx, (startCommentEnd + 3) - startCommentIndx); } } int32_t endCommentIndx = aStr.Find("", false, endCommentIndx); if (endCommentEnd > endCommentIndx) { aStr.Cut(endCommentIndx, (endCommentEnd + 3) - endCommentIndx); } } return NS_OK; } nsresult HTMLEditor::ParseCFHTML(nsCString& aCfhtml, char16_t** aStuffToPaste, char16_t** aCfcontext) { // First obtain offsets from cfhtml str. int32_t startHTML, endHTML, startFragment, endFragment; if (!FindIntegerAfterString("StartHTML:", aCfhtml, startHTML) || startHTML < -1) { return NS_ERROR_FAILURE; } if (!FindIntegerAfterString("EndHTML:", aCfhtml, endHTML) || endHTML < -1) { return NS_ERROR_FAILURE; } if (!FindIntegerAfterString("StartFragment:", aCfhtml, startFragment) || startFragment < 0) { return NS_ERROR_FAILURE; } if (!FindIntegerAfterString("EndFragment:", aCfhtml, endFragment) || startFragment < 0) { return NS_ERROR_FAILURE; } // The StartHTML and EndHTML markers are allowed to be -1 to include everything. // See Reference: MSDN doc entitled "HTML Clipboard Format" // http://msdn.microsoft.com/en-us/library/aa767917(VS.85).aspx#unknown_854 if (startHTML == -1) { startHTML = aCfhtml.Find(""); if (startHTML == -1) { return NS_OK; } } if (endHTML == -1) { const char endFragmentMarker[] = ""; endHTML = aCfhtml.Find(endFragmentMarker); if (endHTML == -1) { return NS_OK; } endHTML += ArrayLength(endFragmentMarker) - 1; } // create context string nsAutoCString contextUTF8(Substring(aCfhtml, startHTML, startFragment - startHTML) + NS_LITERAL_CSTRING("") + 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 int32_t 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; } 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; } curPos--; } // create fragment string nsAutoCString 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 int32_t oldLengthInChars = fragUcs2Str.Length() + 1; // +1 to include null terminator int32_t newLengthInChars = 0; *aStuffToPaste = nsLinebreakConverter::ConvertUnicharLineBreaks(fragUcs2Str.get(), nsLinebreakConverter::eLinebreakAny, nsLinebreakConverter::eLinebreakContent, oldLengthInChars, &newLengthInChars); NS_ENSURE_TRUE(*aStuffToPaste, 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 its context. // we're done! return NS_OK; } static nsresult ImgFromData(const nsACString& aType, const nsACString& aData, nsString& aOutput) { nsAutoCString data64; nsresult rv = Base64Encode(aData, data64); NS_ENSURE_SUCCESS(rv, rv); aOutput.AssignLiteral("\"\""); return NS_OK; } NS_IMPL_ISUPPORTS(HTMLEditor::BlobReader, nsIEditorBlobListener) HTMLEditor::BlobReader::BlobReader(BlobImpl* aBlob, HTMLEditor* aHTMLEditor, bool aIsSafe, nsIDOMDocument* aSourceDoc, nsIDOMNode* aDestinationNode, int32_t aDestOffset, bool aDoDeleteSelection) : mBlob(aBlob) , mHTMLEditor(aHTMLEditor) , mIsSafe(aIsSafe) , mSourceDoc(aSourceDoc) , mDestinationNode(aDestinationNode) , mDestOffset(aDestOffset) , mDoDeleteSelection(aDoDeleteSelection) { MOZ_ASSERT(mBlob); MOZ_ASSERT(mHTMLEditor); MOZ_ASSERT(mDestinationNode); } NS_IMETHODIMP HTMLEditor::BlobReader::OnResult(const nsACString& aResult) { nsString blobType; mBlob->GetType(blobType); NS_ConvertUTF16toUTF8 type(blobType); nsAutoString stuffToPaste; nsresult rv = ImgFromData(type, aResult, stuffToPaste); NS_ENSURE_SUCCESS(rv, rv); AutoEditBatch beginBatching(mHTMLEditor); rv = mHTMLEditor->DoInsertHTMLWithContext(stuffToPaste, EmptyString(), EmptyString(), NS_LITERAL_STRING(kFileMime), mSourceDoc, mDestinationNode, mDestOffset, mDoDeleteSelection, mIsSafe, false); return rv; } NS_IMETHODIMP HTMLEditor::BlobReader::OnError(const nsAString& aError) { nsCOMPtr destNode = do_QueryInterface(mDestinationNode); const nsPromiseFlatString& flat = PromiseFlatString(aError); const char16_t* error = flat.get(); nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, NS_LITERAL_CSTRING("Editor"), destNode->OwnerDoc(), nsContentUtils::eDOM_PROPERTIES, "EditorFileDropFailed", &error, 1); return NS_OK; } nsresult HTMLEditor::InsertObject(const nsACString& aType, nsISupports* aObject, bool aIsSafe, nsIDOMDocument* aSourceDoc, nsIDOMNode* aDestinationNode, int32_t aDestOffset, bool aDoDeleteSelection) { nsresult rv; if (nsCOMPtr blob = do_QueryInterface(aObject)) { RefPtr br = new BlobReader(blob, this, aIsSafe, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection); nsCOMPtr utils = do_GetService("@mozilla.org/editor-utils;1"); NS_ENSURE_TRUE(utils, NS_ERROR_FAILURE); nsCOMPtr node = do_QueryInterface(aDestinationNode); MOZ_ASSERT(node); nsCOMPtr domBlob = Blob::Create(node->GetOwnerGlobal(), blob); NS_ENSURE_TRUE(domBlob, NS_ERROR_FAILURE); return utils->SlurpBlob(domBlob, node->OwnerDoc()->GetWindow(), br); } nsAutoCString type(aType); // Check to see if we can insert an image file bool insertAsImage = false; nsCOMPtr fileObj; if (type.EqualsLiteral(kFileMime)) { fileObj = do_QueryInterface(aObject); if (fileObj) { // Accept any image type fed to us if (nsContentUtils::IsFileImage(fileObj, type)) { insertAsImage = true; } else { // Reset type. type.AssignLiteral(kFileMime); } } } if (type.EqualsLiteral(kJPEGImageMime) || type.EqualsLiteral(kJPGImageMime) || type.EqualsLiteral(kPNGImageMime) || type.EqualsLiteral(kGIFImageMime) || insertAsImage) { nsCString imageData; if (insertAsImage) { rv = nsContentUtils::SlurpFileToString(fileObj, imageData); NS_ENSURE_SUCCESS(rv, rv); } else { nsCOMPtr imageStream = do_QueryInterface(aObject); NS_ENSURE_TRUE(imageStream, NS_ERROR_FAILURE); rv = NS_ConsumeStream(imageStream, UINT32_MAX, imageData); NS_ENSURE_SUCCESS(rv, rv); rv = imageStream->Close(); NS_ENSURE_SUCCESS(rv, rv); } nsAutoString stuffToPaste; rv = ImgFromData(type, imageData, stuffToPaste); NS_ENSURE_SUCCESS(rv, rv); AutoEditBatch beginBatching(this); rv = DoInsertHTMLWithContext(stuffToPaste, EmptyString(), EmptyString(), NS_LITERAL_STRING(kFileMime), aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, aIsSafe, false); } return NS_OK; } nsresult HTMLEditor::InsertFromTransferable(nsITransferable* transferable, nsIDOMDocument* aSourceDoc, const nsAString& aContextStr, const nsAString& aInfoStr, bool havePrivateHTMLFlavor, nsIDOMNode* aDestinationNode, int32_t aDestOffset, bool aDoDeleteSelection) { nsresult rv = NS_OK; nsAutoCString bestFlavor; nsCOMPtr genericDataObj; uint32_t len = 0; if (NS_SUCCEEDED( transferable->GetAnyTransferData(bestFlavor, getter_AddRefs(genericDataObj), &len))) { AutoTransactionsConserveSelection dontSpazMySelection(this); nsAutoString flavor; flavor.AssignWithConversion(bestFlavor); nsAutoString stuffToPaste; bool isSafe = IsSafeToInsertData(aSourceDoc); if (bestFlavor.EqualsLiteral(kFileMime) || bestFlavor.EqualsLiteral(kJPEGImageMime) || bestFlavor.EqualsLiteral(kJPGImageMime) || bestFlavor.EqualsLiteral(kPNGImageMime) || bestFlavor.EqualsLiteral(kGIFImageMime)) { rv = InsertObject(bestFlavor, genericDataObj, isSafe, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection); } else if (bestFlavor.EqualsLiteral(kNativeHTMLMime)) { // note cf_html uses utf8, hence use length = len, not len/2 as in flavors below nsCOMPtr textDataObj = do_QueryInterface(genericDataObj); if (textDataObj && len > 0) { nsAutoCString 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()) { AutoEditBatch beginBatching(this); // If we have our private HTML flavor, we will only use the fragment // from the CF_HTML. The rest comes from the clipboard. if (havePrivateHTMLFlavor) { rv = DoInsertHTMLWithContext(cffragment, aContextStr, aInfoStr, flavor, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } else { rv = DoInsertHTMLWithContext(cffragment, cfcontext, cfselection, flavor, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } } else { // In some platforms (like Linux), the clipboard might return data // requested for unknown flavors (for example: // application/x-moz-nativehtml). In this case, treat the data // to be pasted as mere HTML to get the best chance of pasting it // correctly. bestFlavor.AssignLiteral(kHTMLMime); // Fall through the next case } } } if (bestFlavor.EqualsLiteral(kHTMLMime) || bestFlavor.EqualsLiteral(kUnicodeMime) || bestFlavor.EqualsLiteral(kMozTextInternal)) { nsCOMPtr 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); } else { nsCOMPtr textDataObj(do_QueryInterface(genericDataObj)); if (textDataObj && len > 0) { nsAutoCString text; textDataObj->GetData(text); NS_ASSERTION(text.Length() <= len, "Invalid length!"); stuffToPaste.Assign(NS_ConvertUTF8toUTF16(Substring(text, 0, len))); } } if (!stuffToPaste.IsEmpty()) { AutoEditBatch beginBatching(this); if (bestFlavor.EqualsLiteral(kHTMLMime)) { rv = DoInsertHTMLWithContext(stuffToPaste, aContextStr, aInfoStr, flavor, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } else { rv = InsertTextAt(stuffToPaste, aDestinationNode, aDestOffset, aDoDeleteSelection); } } } } // Try to scroll the selection into view if the paste succeeded if (NS_SUCCEEDED(rv)) { ScrollSelectionIntoView(false); } return rv; } static void GetStringFromDataTransfer(nsIDOMDataTransfer* aDataTransfer, const nsAString& aType, int32_t aIndex, nsAString& aOutputString) { nsCOMPtr variant; DataTransfer::Cast(aDataTransfer)->GetDataAtNoSecurityCheck(aType, aIndex, getter_AddRefs(variant)); if (variant) { variant->GetAsAString(aOutputString); } } nsresult HTMLEditor::InsertFromDataTransfer(DataTransfer* aDataTransfer, int32_t aIndex, nsIDOMDocument* aSourceDoc, nsIDOMNode* aDestinationNode, int32_t aDestOffset, bool aDoDeleteSelection) { ErrorResult rv; RefPtr types = aDataTransfer->MozTypesAt(aIndex, rv); if (rv.Failed()) { return rv.StealNSResult(); } bool hasPrivateHTMLFlavor = types->Contains(NS_LITERAL_STRING(kHTMLContext)); bool isText = IsPlaintextEditor(); bool isSafe = IsSafeToInsertData(aSourceDoc); uint32_t length = types->Length(); for (uint32_t t = 0; t < length; t++) { nsAutoString type; types->Item(t, type); if (!isText) { if (type.EqualsLiteral(kFileMime) || type.EqualsLiteral(kJPEGImageMime) || type.EqualsLiteral(kJPGImageMime) || type.EqualsLiteral(kPNGImageMime) || type.EqualsLiteral(kGIFImageMime)) { nsCOMPtr variant; DataTransfer::Cast(aDataTransfer)->GetDataAtNoSecurityCheck(type, aIndex, getter_AddRefs(variant)); if (variant) { nsCOMPtr object; variant->GetAsISupports(getter_AddRefs(object)); return InsertObject(NS_ConvertUTF16toUTF8(type), object, isSafe, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection); } } else if (type.EqualsLiteral(kNativeHTMLMime)) { // Windows only clipboard parsing. nsAutoString text; GetStringFromDataTransfer(aDataTransfer, type, aIndex, text); NS_ConvertUTF16toUTF8 cfhtml(text); nsXPIDLString cfcontext, cffragment, cfselection; // cfselection left emtpy for now nsresult rv = ParseCFHTML(cfhtml, getter_Copies(cffragment), getter_Copies(cfcontext)); if (NS_SUCCEEDED(rv) && !cffragment.IsEmpty()) { AutoEditBatch beginBatching(this); if (hasPrivateHTMLFlavor) { // If we have our private HTML flavor, we will only use the fragment // from the CF_HTML. The rest comes from the clipboard. nsAutoString contextString, infoString; GetStringFromDataTransfer(aDataTransfer, NS_LITERAL_STRING(kHTMLContext), aIndex, contextString); GetStringFromDataTransfer(aDataTransfer, NS_LITERAL_STRING(kHTMLInfo), aIndex, infoString); return DoInsertHTMLWithContext(cffragment, contextString, infoString, type, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } else { return DoInsertHTMLWithContext(cffragment, cfcontext, cfselection, type, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } } } else if (type.EqualsLiteral(kHTMLMime)) { nsAutoString text, contextString, infoString; GetStringFromDataTransfer(aDataTransfer, type, aIndex, text); GetStringFromDataTransfer(aDataTransfer, NS_LITERAL_STRING(kHTMLContext), aIndex, contextString); GetStringFromDataTransfer(aDataTransfer, NS_LITERAL_STRING(kHTMLInfo), aIndex, infoString); AutoEditBatch beginBatching(this); if (type.EqualsLiteral(kHTMLMime)) { return DoInsertHTMLWithContext(text, contextString, infoString, type, aSourceDoc, aDestinationNode, aDestOffset, aDoDeleteSelection, isSafe); } } } if (type.EqualsLiteral(kTextMime) || type.EqualsLiteral(kMozTextInternal)) { nsAutoString text; GetStringFromDataTransfer(aDataTransfer, type, aIndex, text); AutoEditBatch beginBatching(this); return InsertTextAt(text, aDestinationNode, aDestOffset, aDoDeleteSelection); } } return NS_OK; } bool HTMLEditor::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. NS_ENSURE_TRUE(aClipboard, false); bool bHavePrivateHTMLFlavor = false; const char* flavArray[] = { kHTMLContext }; if (NS_SUCCEEDED( aClipboard->HasDataMatchingFlavors(flavArray, ArrayLength(flavArray), nsIClipboard::kGlobalClipboard, &bHavePrivateHTMLFlavor))) { return bHavePrivateHTMLFlavor; } return false; } NS_IMETHODIMP HTMLEditor::Paste(int32_t aSelectionType) { if (!FireClipboardEvent(ePaste, aSelectionType)) { return NS_OK; } // Get Clipboard Service nsresult rv; nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); // Get the nsITransferable interface for getting the data from the clipboard nsCOMPtr trans; rv = PrepareHTMLTransferable(getter_AddRefs(trans)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE); // Get the Data from the clipboard rv = clipboard->GetData(trans, aSelectionType); NS_ENSURE_SUCCESS(rv, rv); if (!IsModifiable()) { return NS_OK; } // also get additional html copy hints, if present nsAutoString contextStr, infoStr; // If we have our internal html flavor on the clipboard, there is special // context to use instead of cfhtml context. bool bHavePrivateHTMLFlavor = HavePrivateHTMLFlavor(clipboard); if (bHavePrivateHTMLFlavor) { nsCOMPtr contextDataObj, infoDataObj; uint32_t contextLen, infoLen; nsCOMPtr textDataObj; nsCOMPtr contextTrans = do_CreateInstance("@mozilla.org/widget/transferable;1"); NS_ENSURE_TRUE(contextTrans, NS_ERROR_NULL_POINTER); contextTrans->Init(nullptr); contextTrans->AddDataFlavor(kHTMLContext); clipboard->GetData(contextTrans, aSelectionType); contextTrans->GetTransferData(kHTMLContext, getter_AddRefs(contextDataObj), &contextLen); nsCOMPtr infoTrans = do_CreateInstance("@mozilla.org/widget/transferable;1"); NS_ENSURE_TRUE(infoTrans, NS_ERROR_NULL_POINTER); infoTrans->Init(nullptr); 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 domdoc; GetDocument(getter_AddRefs(domdoc)); if (!EditorHookUtils::DoInsertionHook(domdoc, nullptr, trans)) { return NS_OK; } return InsertFromTransferable(trans, nullptr, contextStr, infoStr, bHavePrivateHTMLFlavor, nullptr, 0, true); } NS_IMETHODIMP HTMLEditor::PasteTransferable(nsITransferable* aTransferable) { // Use an invalid value for the clipboard type as data comes from aTransferable // and we don't currently implement a way to put that in the data transfer yet. if (!FireClipboardEvent(ePaste, nsIClipboard::kGlobalClipboard)) { return NS_OK; } // handle transferable hooks nsCOMPtr domdoc = GetDOMDocument(); if (!EditorHookUtils::DoInsertionHook(domdoc, nullptr, aTransferable)) { return NS_OK; } nsAutoString contextStr, infoStr; return InsertFromTransferable(aTransferable, nullptr, contextStr, infoStr, false, nullptr, 0, true); } /** * HTML PasteNoFormatting. Ignore any HTML styles and formating in paste source. */ NS_IMETHODIMP HTMLEditor::PasteNoFormatting(int32_t aSelectionType) { if (!FireClipboardEvent(ePaste, aSelectionType)) { return NS_OK; } ForceCompositionEnd(); // Get Clipboard Service nsresult rv; nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); // Get the nsITransferable interface for getting the data from the clipboard. // use TextEditor::PrepareTransferable() to force unicode plaintext data. nsCOMPtr trans; rv = TextEditor::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(); rv = InsertFromTransferable(trans, nullptr, empty, empty, false, nullptr, 0, 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, kJPGImageMime, kPNGImageMime, kGIFImageMime }; NS_IMETHODIMP HTMLEditor::CanPaste(int32_t aSelectionType, bool* aCanPaste) { NS_ENSURE_ARG_POINTER(aCanPaste); *aCanPaste = false; // Always enable the paste command when inside of a HTML or XHTML document. nsCOMPtr doc = GetDocument(); if (doc && doc->IsHTMLOrXHTML()) { *aCanPaste = true; return NS_OK; } // can't paste if readonly if (!IsModifiable()) { return NS_OK; } nsresult rv; nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); bool haveFlavors; // Use the flavors depending on the current editor mask if (IsPlaintextEditor()) { rv = clipboard->HasDataMatchingFlavors(textEditorFlavors, ArrayLength(textEditorFlavors), aSelectionType, &haveFlavors); } else { rv = clipboard->HasDataMatchingFlavors(textHtmlEditorFlavors, ArrayLength(textHtmlEditorFlavors), aSelectionType, &haveFlavors); } NS_ENSURE_SUCCESS(rv, rv); *aCanPaste = haveFlavors; return NS_OK; } NS_IMETHODIMP HTMLEditor::CanPasteTransferable(nsITransferable* aTransferable, bool* aCanPaste) { NS_ENSURE_ARG_POINTER(aCanPaste); // can't paste if readonly if (!IsModifiable()) { *aCanPaste = false; return NS_OK; } // If |aTransferable| is null, assume that a paste will succeed. if (!aTransferable) { *aCanPaste = 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 = ArrayLength(textEditorFlavors); } else { flavors = textHtmlEditorFlavors; length = ArrayLength(textHtmlEditorFlavors); } for (unsigned int i = 0; i < length; i++, flavors++) { nsCOMPtr data; uint32_t dataLen; nsresult rv = aTransferable->GetTransferData(*flavors, getter_AddRefs(data), &dataLen); if (NS_SUCCEEDED(rv) && data) { *aCanPaste = true; return NS_OK; } } *aCanPaste = false; return NS_OK; } /** * HTML PasteAsQuotation: Paste in a blockquote type=cite. */ NS_IMETHODIMP HTMLEditor::PasteAsQuotation(int32_t aSelectionType) { if (IsPlaintextEditor()) { return PasteAsPlaintextQuotation(aSelectionType); } nsAutoString citation; return PasteAsCitedQuotation(citation, aSelectionType); } NS_IMETHODIMP HTMLEditor::PasteAsCitedQuotation(const nsAString& aCitation, int32_t aSelectionType) { AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::insertQuotation, nsIEditor::eNext); // get selection RefPtr selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); // give rules a chance to handle or cancel TextRulesInfo ruleInfo(EditAction::insertElement); bool cancel, handled; // Protect the edit rules object from dying nsCOMPtr rules(mRules); nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); NS_ENSURE_SUCCESS(rv, rv); if (cancel || handled) { return NS_OK; // rules canceled the operation } nsCOMPtr newNode = DeleteSelectionAndCreateElement(*nsGkAtoms::blockquote); NS_ENSURE_TRUE(newNode, NS_ERROR_NULL_POINTER); // Try to set type=cite. Ignore it if this fails. newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::type, NS_LITERAL_STRING("cite"), true); // Set the selection to the underneath the node we just inserted: rv = selection->Collapse(newNode, 0); NS_ENSURE_SUCCESS(rv, rv); // Ensure that the inserted
has a frame to make it IsEditable. FlushFrames(); return Paste(aSelectionType); } /** * Paste a plaintext quotation. */ NS_IMETHODIMP HTMLEditor::PasteAsPlaintextQuotation(int32_t aSelectionType) { // Get Clipboard Service nsresult rv; nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); // Create generic Transferable for getting the data nsCOMPtr trans = do_CreateInstance("@mozilla.org/widget/transferable;1", &rv); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE); nsCOMPtr destdoc = GetDocument(); nsILoadContext* loadContext = destdoc ? destdoc->GetLoadContext() : nullptr; trans->Init(loadContext); // 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 genericDataObj; uint32_t len = 0; nsAutoCString flav; rv = trans->GetAnyTransferData(flav, getter_AddRefs(genericDataObj), &len); NS_ENSURE_SUCCESS(rv, rv); if (flav.EqualsLiteral(kUnicodeMime)) { nsCOMPtr textDataObj = do_QueryInterface(genericDataObj); if (textDataObj && len > 0) { nsAutoString stuffToPaste; textDataObj->GetData(stuffToPaste); NS_ASSERTION(stuffToPaste.Length() <= (len/2), "Invalid length!"); AutoEditBatch beginBatching(this); rv = InsertAsPlaintextQuotation(stuffToPaste, true, 0); } } return rv; } NS_IMETHODIMP HTMLEditor::InsertTextWithQuotations(const nsAString& aStringToInsert) { AutoEditBatch beginBatching(this); // 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 char16_t cite('>'); bool 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(false, "Return characters in DOM! InsertTextWithQuotations may be wrong"); } #endif /* DEBUG */ // Loop over lines: nsresult rv = NS_OK; nsAString::const_iterator lineStart (hunkStart); // We will break from inside when we run out of newlines. for (;;) { // Search for the end of this line (dom newlines, see above): bool found = FindCharInReadable('\n', lineStart, strEnd); bool quoted = 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; // 'firstNewline' points to the first '\n'. We want to // ensure that this first newline goes into the hunk // since quoted hunks can be displayed as blocks // (and the newline should become invisible in this case). // So the next line needs to start at the next character. lineStart++; } } // 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 dummyNode; if (curHunkIsQuoted) { rv = InsertAsPlaintextQuotation(curHunk, false, getter_AddRefs(dummyNode)); } else { rv = InsertText(curHunk); } if (!found) { break; } curHunkIsQuoted = quoted; hunkStart = lineStart; } EndTransaction(); return rv; } NS_IMETHODIMP HTMLEditor::InsertAsQuotation(const nsAString& aQuotedText, nsIDOMNode** aNodeInserted) { if (IsPlaintextEditor()) { return InsertAsPlaintextQuotation(aQuotedText, true, aNodeInserted); } nsAutoString citation; return InsertAsCitedQuotation(aQuotedText, citation, false, aNodeInserted); } // Insert plaintext as a quotation, with cite marks (e.g. "> "). // This differs from its corresponding method in TextEditor // in that here, quoted material is enclosed in a
 tag
// in order to preserve the original line wrapping.
NS_IMETHODIMP
HTMLEditor::InsertAsPlaintextQuotation(const nsAString& aQuotedText,
                                       bool aAddCites,
                                       nsIDOMNode** aNodeInserted)
{
  // get selection
  RefPtr selection = GetSelection();
  NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);

  AutoEditBatch beginBatching(this);
  AutoRules beginRulesSniffing(this, EditAction::insertQuotation,
                               nsIEditor::eNext);

  // give rules a chance to handle or cancel
  TextRulesInfo ruleInfo(EditAction::insertElement);
  bool cancel, handled;
  // Protect the edit rules object from dying
  nsCOMPtr rules(mRules);
  nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
  NS_ENSURE_SUCCESS(rv, rv);
  if (cancel || handled) {
    return NS_OK; // rules canceled the operation
  }

  // Wrap the inserted quote in a  so we can distinguish it. If we're
  // inserting into the , we use a  which is displayed as a block
  // and sized to the screen using 98 viewport width units.
  // We could use 100vw, but 98vw avoids a horizontal scroll bar where possible.
  // All this is done to wrap overlong lines to the screen and not to the
  // container element, the width-restricted body.
  nsCOMPtr newNode =
    DeleteSelectionAndCreateElement(*nsGkAtoms::span);

  // 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 (newNode) {
    // Add an attribute on the pre node so we'll know it's a quotation.
    newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::mozquote,
                     NS_LITERAL_STRING("true"), true);
    // Allow wrapping on spans so long lines get wrapped to the screen.
    nsCOMPtr parent = newNode->GetParentNode();
    if (parent && parent->IsHTMLElement(nsGkAtoms::body)) {
      newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
        NS_LITERAL_STRING("white-space: pre-wrap; display: block; width: 98vw;"),
        true);
    } else {
      newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
        NS_LITERAL_STRING("white-space: pre-wrap;"), true);
    }

    // and set the selection inside it:
    selection->Collapse(newNode, 0);
  }

  // Ensure that the inserted  has a frame to make it IsEditable.
  FlushFrames();

  if (aAddCites) {
    rv = TextEditor::InsertAsQuotation(aQuotedText, aNodeInserted);
  } else {
    rv = TextEditor::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 = GetAsDOMNode(newNode);
    NS_IF_ADDREF(*aNodeInserted);
  }

  // Set the selection to just after the inserted node:
  if (NS_SUCCEEDED(rv) && newNode) {
    nsCOMPtr parent = newNode->GetParentNode();
    int32_t offset = parent ? parent->IndexOf(newNode) : -1;
    if (parent) {
      selection->Collapse(parent, offset + 1);
    }
  }
  return rv;
}

NS_IMETHODIMP
HTMLEditor::StripCites()
{
  return TextEditor::StripCites();
}

NS_IMETHODIMP
HTMLEditor::Rewrap(bool aRespectNewlines)
{
  return TextEditor::Rewrap(aRespectNewlines);
}

NS_IMETHODIMP
HTMLEditor::InsertAsCitedQuotation(const nsAString& aQuotedText,
                                   const nsAString& aCitation,
                                   bool 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, true, aNodeInserted);
  }

  // get selection
  RefPtr selection = GetSelection();
  NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);

  AutoEditBatch beginBatching(this);
  AutoRules beginRulesSniffing(this, EditAction::insertQuotation,
                               nsIEditor::eNext);

  // give rules a chance to handle or cancel
  TextRulesInfo ruleInfo(EditAction::insertElement);
  bool cancel, handled;
  // Protect the edit rules object from dying
  nsCOMPtr rules(mRules);
  nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
  NS_ENSURE_SUCCESS(rv, rv);
  if (cancel || handled) {
    return NS_OK; // rules canceled the operation
  }

  nsCOMPtr newNode =
    DeleteSelectionAndCreateElement(*nsGkAtoms::blockquote);
  NS_ENSURE_TRUE(newNode, NS_ERROR_NULL_POINTER);

  // Try to set type=cite.  Ignore it if this fails.
  newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
                   NS_LITERAL_STRING("cite"), true);

  if (!aCitation.IsEmpty()) {
    newNode->SetAttr(kNameSpaceID_None, nsGkAtoms::cite, aCitation, true);
  }

  // Set the selection inside the blockquote so aQuotedText will go there:
  selection->Collapse(newNode, 0);

  // Ensure that the inserted 
has a frame to make it IsEditable. FlushFrames(); if (aInsertHTML) { rv = LoadHTML(aQuotedText); } else { rv = InsertText(aQuotedText); // XXX ignore charset } if (aNodeInserted && NS_SUCCEEDED(rv)) { *aNodeInserted = GetAsDOMNode(newNode); NS_IF_ADDREF(*aNodeInserted); } // Set the selection to just after the inserted node: if (NS_SUCCEEDED(rv) && newNode) { nsCOMPtr parent = newNode->GetParentNode(); int32_t offset = parent ? parent->IndexOf(newNode) : -1; if (parent) { selection->Collapse(parent, offset + 1); } } return rv; } void RemoveBodyAndHead(nsINode& aNode) { nsCOMPtr body, head; // find the body and head nodes if any. // look only at immediate children of aNode. for (nsCOMPtr child = aNode.GetFirstChild(); child; child = child->GetNextSibling()) { if (child->IsHTMLElement(nsGkAtoms::body)) { body = child; } else if (child->IsHTMLElement(nsGkAtoms::head)) { head = child; } } if (head) { ErrorResult ignored; aNode.RemoveChild(*head, ignored); } if (body) { nsCOMPtr child = body->GetFirstChild(); while (child) { ErrorResult ignored; aNode.InsertBefore(*child, body, ignored); child = body->GetFirstChild(); } ErrorResult ignored; aNode.RemoveChild(*body, ignored); } } /** * 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 nullptr. * * 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 &aResult) { NS_ENSURE_TRUE(aStart, NS_OK); nsCOMPtr child, tmp; nsresult rv = aStart->GetFirstChild(getter_AddRefs(child)); NS_ENSURE_SUCCESS(rv, rv); if (!child) { // If the current result is nullptr, 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 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_SUCCESS_EDITOR_FOUND_TARGET; } } rv = FindTargetNode(child, aResult); NS_ENSURE_SUCCESS(rv, rv); if (rv == NS_SUCCESS_EDITOR_FOUND_TARGET) { return NS_SUCCESS_EDITOR_FOUND_TARGET; } rv = child->GetNextSibling(getter_AddRefs(tmp)); NS_ENSURE_SUCCESS(rv, rv); child = tmp; } while (child); return NS_OK; } nsresult HTMLEditor::CreateDOMFragmentFromPaste(const nsAString& aInputString, const nsAString& aContextStr, const nsAString& aInfoStr, nsCOMPtr* outFragNode, nsCOMPtr* outStartNode, nsCOMPtr* outEndNode, int32_t* outStartOffset, int32_t* outEndOffset, bool aTrustedInput) { NS_ENSURE_TRUE(outFragNode && outStartNode && outEndNode, NS_ERROR_NULL_POINTER); nsCOMPtr doc = GetDocument(); NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE); // if we have context info, create a fragment for that nsresult rv = NS_OK; nsCOMPtr contextLeaf; RefPtr contextAsNode; if (!aContextStr.IsEmpty()) { rv = ParseFragment(aContextStr, nullptr, doc, getter_AddRefs(contextAsNode), aTrustedInput); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(contextAsNode, NS_ERROR_FAILURE); rv = StripFormattingNodes(*contextAsNode); NS_ENSURE_SUCCESS(rv, rv); RemoveBodyAndHead(*contextAsNode); rv = FindTargetNode(contextAsNode, contextLeaf); NS_ENSURE_SUCCESS(rv, rv); } nsCOMPtr contextLeafAsContent = do_QueryInterface(contextLeaf); // create fragment for pasted html nsIAtom* contextAtom; if (contextLeafAsContent) { contextAtom = contextLeafAsContent->NodeInfo()->NameAtom(); if (contextLeafAsContent->IsHTMLElement(nsGkAtoms::html)) { contextAtom = nsGkAtoms::body; } } else { contextAtom = nsGkAtoms::body; } RefPtr fragment; rv = ParseFragment(aInputString, contextAtom, doc, getter_AddRefs(fragment), aTrustedInput); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(fragment, NS_ERROR_FAILURE); RemoveBodyAndHead(*fragment); if (contextAsNode) { // unite the two trees nsCOMPtr junk; contextLeaf->AppendChild(fragment, getter_AddRefs(junk)); fragment = contextAsNode; } rv = StripFormattingNodes(*fragment, true); NS_ENSURE_SUCCESS(rv, rv); // 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 = fragment; } *outFragNode = fragment.forget(); *outStartOffset = 0; // get the infoString contents if (!aInfoStr.IsEmpty()) { int32_t sep = aInfoStr.FindChar((char16_t)','); nsAutoString numstr1(Substring(aInfoStr, 0, sep)); nsAutoString numstr2(Substring(aInfoStr, sep+1, aInfoStr.Length() - (sep+1))); // Move the start and end children. nsresult err; int32_t num = numstr1.ToInteger(&err); nsCOMPtr tmp; while (num--) { (*outStartNode)->GetFirstChild(getter_AddRefs(tmp)); NS_ENSURE_TRUE(tmp, NS_ERROR_FAILURE); tmp.swap(*outStartNode); } num = numstr2.ToInteger(&err); while (num--) { (*outEndNode)->GetLastChild(getter_AddRefs(tmp)); NS_ENSURE_TRUE(tmp, NS_ERROR_FAILURE); tmp.swap(*outEndNode); } } nsCOMPtr node = do_QueryInterface(*outEndNode); *outEndOffset = node->Length(); return NS_OK; } nsresult HTMLEditor::ParseFragment(const nsAString& aFragStr, nsIAtom* aContextLocalName, nsIDocument* aTargetDocument, DocumentFragment** aFragment, bool aTrustedInput) { nsAutoScriptBlockerSuppressNodeRemoved autoBlocker; RefPtr fragment = new DocumentFragment(aTargetDocument->NodeInfoManager()); nsresult rv = nsContentUtils::ParseFragmentHTML(aFragStr, fragment, aContextLocalName ? aContextLocalName : nsGkAtoms::body, kNameSpaceID_XHTML, false, true); if (!aTrustedInput) { nsTreeSanitizer sanitizer(aContextLocalName ? nsIParserUtils::SanitizerAllowStyle : nsIParserUtils::SanitizerAllowComments); sanitizer.Sanitize(fragment); } fragment.forget(aFragment); return rv; } void HTMLEditor::CreateListOfNodesToPaste( DocumentFragment& aFragment, nsTArray>& outNodeList, nsINode* aStartNode, int32_t aStartOffset, nsINode* aEndNode, int32_t aEndOffset) { // If no info was provided about the boundary between context and stream, // then assume all is stream. if (!aStartNode) { aStartNode = &aFragment; aStartOffset = 0; aEndNode = &aFragment; aEndOffset = aFragment.Length(); } RefPtr docFragRange; nsresult rv = nsRange::CreateRange(aStartNode, aStartOffset, aEndNode, aEndOffset, getter_AddRefs(docFragRange)); MOZ_ASSERT(NS_SUCCEEDED(rv)); NS_ENSURE_SUCCESS(rv, ); // Now use a subtree iterator over the range to create a list of nodes TrivialFunctor functor; DOMSubtreeIterator iter; rv = iter.Init(*docFragRange); NS_ENSURE_SUCCESS(rv, ); iter.AppendList(functor, outNodeList); } void HTMLEditor::GetListAndTableParents(StartOrEnd aStartOrEnd, nsTArray>& aNodeList, nsTArray>& outArray) { MOZ_ASSERT(aNodeList.Length()); // Build up list of parents of first (or last) node in list that are either // lists, or tables. int32_t idx = aStartOrEnd == StartOrEnd::end ? aNodeList.Length() - 1 : 0; for (nsCOMPtr node = aNodeList[idx]; node; node = node->GetParentNode()) { if (HTMLEditUtils::IsList(node) || HTMLEditUtils::IsTable(node)) { outArray.AppendElement(*node->AsElement()); } } } int32_t HTMLEditor::DiscoverPartialListsAndTables( nsTArray>& aPasteNodes, nsTArray>& aListsAndTables) { int32_t ret = -1; int32_t listAndTableParents = aListsAndTables.Length(); // Scan insertion list for table elements (other than table). for (auto& curNode : aPasteNodes) { if (HTMLEditUtils::IsTableElement(curNode) && !curNode->IsHTMLElement(nsGkAtoms::table)) { nsCOMPtr table = curNode->GetParentElement(); while (table && !table->IsHTMLElement(nsGkAtoms::table)) { table = table->GetParentElement(); } if (table) { int32_t idx = aListsAndTables.IndexOf(table); if (idx == -1) { return ret; } ret = idx; if (ret == listAndTableParents - 1) { return ret; } } } if (HTMLEditUtils::IsListItem(curNode)) { nsCOMPtr list = curNode->GetParentElement(); while (list && !HTMLEditUtils::IsList(list)) { list = list->GetParentElement(); } if (list) { int32_t idx = aListsAndTables.IndexOf(list); if (idx == -1) { return ret; } ret = idx; if (ret == listAndTableParents - 1) { return ret; } } } } return ret; } nsINode* HTMLEditor::ScanForListAndTableStructure( StartOrEnd aStartOrEnd, nsTArray>& aNodes, Element& aListOrTable) { // Look upward from first/last paste node for a piece of this list/table int32_t idx = aStartOrEnd == StartOrEnd::end ? aNodes.Length() - 1 : 0; bool isList = HTMLEditUtils::IsList(&aListOrTable); for (nsCOMPtr node = aNodes[idx]; node; node = node->GetParentNode()) { if ((isList && HTMLEditUtils::IsListItem(node)) || (!isList && HTMLEditUtils::IsTableElement(node) && !node->IsHTMLElement(nsGkAtoms::table))) { nsCOMPtr structureNode = node->GetParentElement(); if (isList) { while (structureNode && !HTMLEditUtils::IsList(structureNode)) { structureNode = structureNode->GetParentElement(); } } else { while (structureNode && !structureNode->IsHTMLElement(nsGkAtoms::table)) { structureNode = structureNode->GetParentElement(); } } if (structureNode == &aListOrTable) { if (isList) { return structureNode; } return node; } } } return nullptr; } void HTMLEditor::ReplaceOrphanedStructure( StartOrEnd aStartOrEnd, nsTArray>& aNodeArray, nsTArray>& aListAndTableArray, int32_t aHighWaterMark) { OwningNonNull curNode = aListAndTableArray[aHighWaterMark]; // Find substructure of list or table that must be included in paste. nsCOMPtr replaceNode = ScanForListAndTableStructure(aStartOrEnd, aNodeArray, curNode); if (!replaceNode) { return; } // If we found substructure, paste it instead of its descendants. // Postprocess list to remove any descendants of this node so that we don't // insert them twice. uint32_t removedCount = 0; uint32_t originalLength = aNodeArray.Length(); for (uint32_t i = 0; i < originalLength; i++) { uint32_t idx = aStartOrEnd == StartOrEnd::start ? (i - removedCount) : (originalLength - i - 1); OwningNonNull endpoint = aNodeArray[idx]; if (endpoint == replaceNode || EditorUtils::IsDescendantOf(endpoint, replaceNode)) { aNodeArray.RemoveElementAt(idx); removedCount++; } } // Now replace the removed nodes with the structural parent if (aStartOrEnd == StartOrEnd::end) { aNodeArray.AppendElement(*replaceNode); } else { aNodeArray.InsertElementAt(0, *replaceNode); } } } // namespace mozilla