/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* 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 "mozilla/DebugOnly.h" #include "mozilla/EventStates.h" #include "mozilla/TextEvents.h" #include "nsCRT.h" #include "nsUnicharUtils.h" #include "HTMLEditorEventListener.h" #include "HTMLEditRules.h" #include "HTMLEditUtils.h" #include "HTMLURIRefObject.h" #include "SetDocumentTitleTransaction.h" #include "StyleSheetTransactions.h" #include "TextEditUtils.h" #include "TypeInState.h" #include "nsIDOMText.h" #include "nsIDOMMozNamedAttrMap.h" #include "nsIDOMNodeList.h" #include "nsIDOMDocument.h" #include "nsIDOMAttr.h" #include "nsIDocumentInlines.h" #include "nsIDOMEventTarget.h" #include "nsIDOMKeyEvent.h" #include "nsIDOMMouseEvent.h" #include "nsIDOMHTMLAnchorElement.h" #include "nsISelectionController.h" #include "nsIDOMHTMLDocument.h" #include "nsILinkHandler.h" #include "nsIInlineSpellChecker.h" #include "mozilla/css/Loader.h" #include "nsIDOMStyleSheet.h" #include "nsIContent.h" #include "nsIContentIterator.h" #include "nsIMutableArray.h" #include "nsContentUtils.h" #include "nsIDocumentEncoder.h" #include "nsIPresShell.h" #include "nsPresContext.h" #include "nsFocusManager.h" #include "nsPIDOMWindow.h" // netwerk #include "nsIURI.h" #include "nsNetUtil.h" // Misc #include "mozilla/EditorUtils.h" #include "HTMLEditorObjectResizerUtils.h" #include "TextEditorTest.h" #include "WSRunObject.h" #include "nsGkAtoms.h" #include "nsIWidget.h" #include "nsIFrame.h" #include "nsIParserService.h" #include "mozilla/dom/Selection.h" #include "mozilla/dom/DocumentFragment.h" #include "mozilla/dom/Element.h" #include "mozilla/dom/Event.h" #include "mozilla/dom/EventTarget.h" #include "mozilla/dom/HTMLBodyElement.h" #include "nsTextFragment.h" #include "nsContentList.h" #include "mozilla/StyleSheet.h" #include "mozilla/StyleSheetInlines.h" namespace mozilla { using namespace dom; using namespace widget; // Some utilities to handle overloading of "A" tag for link and named anchor. static bool IsLinkTag(const nsString& s) { return s.EqualsIgnoreCase("href"); } static bool IsNamedAnchorTag(const nsString& s) { return s.EqualsIgnoreCase("anchor") || s.EqualsIgnoreCase("namedanchor"); } HTMLEditor::HTMLEditor() : mCRInParagraphCreatesParagraph(false) , mCSSAware(false) , mSelectedCellIndex(0) , mIsObjectResizingEnabled(true) , mIsResizing(false) , mPreserveRatio(false) , mResizedObjectIsAnImage(false) , mIsAbsolutelyPositioningEnabled(true) , mResizedObjectIsAbsolutelyPositioned(false) , mGrabberClicked(false) , mIsMoving(false) , mSnapToGridEnabled(false) , mIsInlineTableEditingEnabled(true) , mOriginalX(0) , mOriginalY(0) , mResizedObjectX(0) , mResizedObjectY(0) , mResizedObjectWidth(0) , mResizedObjectHeight(0) , mResizedObjectMarginLeft(0) , mResizedObjectMarginTop(0) , mResizedObjectBorderLeft(0) , mResizedObjectBorderTop(0) , mXIncrementFactor(0) , mYIncrementFactor(0) , mWidthIncrementFactor(0) , mHeightIncrementFactor(0) , mInfoXIncrement(20) , mInfoYIncrement(20) , mPositionedObjectX(0) , mPositionedObjectY(0) , mPositionedObjectWidth(0) , mPositionedObjectHeight(0) , mPositionedObjectMarginLeft(0) , mPositionedObjectMarginTop(0) , mPositionedObjectBorderLeft(0) , mPositionedObjectBorderTop(0) , mGridSize(0) { } HTMLEditor::~HTMLEditor() { // remove the rules as an action listener. Else we get a bad // ownership loop later on. it's ok if the rules aren't a listener; // we ignore the error. nsCOMPtr<nsIEditActionListener> mListener = do_QueryInterface(mRules); RemoveEditActionListener(mListener); //the autopointers will clear themselves up. //but we need to also remove the listeners or we have a leak RefPtr<Selection> selection = GetSelection(); // if we don't get the selection, just skip this if (selection) { nsCOMPtr<nsISelectionListener>listener; listener = do_QueryInterface(mTypeInState); if (listener) { selection->RemoveSelectionListener(listener); } listener = do_QueryInterface(mSelectionListenerP); if (listener) { selection->RemoveSelectionListener(listener); } } mTypeInState = nullptr; mSelectionListenerP = nullptr; // free any default style propItems RemoveAllDefaultProperties(); if (mLinkHandler && mDocWeak) { nsCOMPtr<nsIPresShell> ps = GetPresShell(); if (ps && ps->GetPresContext()) { ps->GetPresContext()->SetLinkHandler(mLinkHandler); } } RemoveEventListeners(); HideAnonymousEditingUIs(); } void HTMLEditor::HideAnonymousEditingUIs() { if (mAbsolutelyPositionedObject) { HideGrabber(); } if (mInlineEditedCell) { HideInlineTableEditingUI(); } if (mResizedObject) { HideResizers(); } } NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLEditor) NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLEditor, TextEditor) NS_IMPL_CYCLE_COLLECTION_UNLINK(mTypeInState) NS_IMPL_CYCLE_COLLECTION_UNLINK(mStyleSheets) tmp->HideAnonymousEditingUIs(); NS_IMPL_CYCLE_COLLECTION_UNLINK_END NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLEditor, TextEditor) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTypeInState) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStyleSheets) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTopLeftHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTopHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTopRightHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLeftHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRightHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBottomLeftHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBottomHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBottomRightHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActivatedHandle) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResizingShadow) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResizingInfo) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResizedObject) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMouseMotionListenerP) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectionListenerP) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResizeEventListenerP) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mObjectResizeEventListeners) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAbsolutelyPositionedObject) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGrabber) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPositioningShadow) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInlineEditedCell) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAddColumnBeforeButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRemoveColumnButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAddColumnAfterButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAddRowBeforeButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRemoveRowButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAddRowAfterButton) NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END NS_IMPL_ADDREF_INHERITED(HTMLEditor, EditorBase) NS_IMPL_RELEASE_INHERITED(HTMLEditor, EditorBase) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(HTMLEditor) NS_INTERFACE_MAP_ENTRY(nsIHTMLEditor) NS_INTERFACE_MAP_ENTRY(nsIHTMLObjectResizer) NS_INTERFACE_MAP_ENTRY(nsIHTMLAbsPosEditor) NS_INTERFACE_MAP_ENTRY(nsIHTMLInlineTableEditor) NS_INTERFACE_MAP_ENTRY(nsITableEditor) NS_INTERFACE_MAP_ENTRY(nsIEditorStyleSheets) NS_INTERFACE_MAP_ENTRY(nsICSSLoaderObserver) NS_INTERFACE_MAP_ENTRY(nsIMutationObserver) NS_INTERFACE_MAP_END_INHERITING(TextEditor) NS_IMETHODIMP HTMLEditor::Init(nsIDOMDocument* aDoc, nsIContent* aRoot, nsISelectionController* aSelCon, uint32_t aFlags, const nsAString& aInitialValue) { NS_PRECONDITION(aDoc && !aSelCon, "bad arg"); NS_ENSURE_TRUE(aDoc, NS_ERROR_NULL_POINTER); MOZ_ASSERT(aInitialValue.IsEmpty(), "Non-empty initial values not supported"); nsresult rulesRv = NS_OK; { // block to scope AutoEditInitRulesTrigger AutoEditInitRulesTrigger rulesTrigger(this, rulesRv); // Init the plaintext editor nsresult rv = TextEditor::Init(aDoc, aRoot, nullptr, aFlags, aInitialValue); if (NS_FAILED(rv)) { return rv; } // Init mutation observer nsCOMPtr<nsINode> document = do_QueryInterface(aDoc); document->AddMutationObserverUnlessExists(this); if (!mRootElement) { UpdateRootElement(); } // disable Composer-only features if (IsMailEditor()) { SetAbsolutePositioningEnabled(false); SetSnapToGridEnabled(false); } // Init the HTML-CSS utils mCSSEditUtils = new CSSEditUtils(this); // disable links nsCOMPtr<nsIPresShell> presShell = GetPresShell(); NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE); nsPresContext *context = presShell->GetPresContext(); NS_ENSURE_TRUE(context, NS_ERROR_NULL_POINTER); if (!IsPlaintextEditor() && !IsInteractionAllowed()) { mLinkHandler = context->GetLinkHandler(); context->SetLinkHandler(nullptr); } // init the type-in state mTypeInState = new TypeInState(); // init the selection listener for image resizing mSelectionListenerP = new ResizerSelectionListener(this); if (!IsInteractionAllowed()) { // ignore any errors from this in case the file is missing AddOverrideStyleSheet(NS_LITERAL_STRING("resource://gre/res/EditorOverride.css")); } RefPtr<Selection> selection = GetSelection(); if (selection) { nsCOMPtr<nsISelectionListener>listener; listener = do_QueryInterface(mTypeInState); if (listener) { selection->AddSelectionListener(listener); } listener = do_QueryInterface(mSelectionListenerP); if (listener) { selection->AddSelectionListener(listener); } } } NS_ENSURE_SUCCESS(rulesRv, rulesRv); return NS_OK; } NS_IMETHODIMP HTMLEditor::PreDestroy(bool aDestroyingFrames) { if (mDidPreDestroy) { return NS_OK; } nsCOMPtr<nsINode> document = do_QueryReferent(mDocWeak); if (document) { document->RemoveMutationObserver(this); } while (!mStyleSheetURLs.IsEmpty()) { RemoveOverrideStyleSheet(mStyleSheetURLs[0]); } // Clean up after our anonymous content -- we don't want these nodes to // stay around (which they would, since the frames have an owning reference). HideAnonymousEditingUIs(); return TextEditor::PreDestroy(aDestroyingFrames); } void HTMLEditor::UpdateRootElement() { // Use the HTML documents body element as the editor root if we didn't // get a root element during initialization. nsCOMPtr<nsIDOMElement> rootElement; nsCOMPtr<nsIDOMHTMLElement> bodyElement; GetBodyElement(getter_AddRefs(bodyElement)); if (bodyElement) { rootElement = bodyElement; } else { // If there is no HTML body element, // we should use the document root element instead. nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak); if (doc) { doc->GetDocumentElement(getter_AddRefs(rootElement)); } } mRootElement = do_QueryInterface(rootElement); } already_AddRefed<nsIContent> HTMLEditor::FindSelectionRoot(nsINode* aNode) { NS_PRECONDITION(aNode->IsNodeOfType(nsINode::eDOCUMENT) || aNode->IsNodeOfType(nsINode::eCONTENT), "aNode must be content or document node"); nsCOMPtr<nsIDocument> doc = aNode->GetUncomposedDoc(); if (!doc) { return nullptr; } nsCOMPtr<nsIContent> content; if (doc->HasFlag(NODE_IS_EDITABLE) || !aNode->IsContent()) { content = doc->GetRootElement(); return content.forget(); } content = aNode->AsContent(); // XXX If we have readonly flag, shouldn't return the element which has // contenteditable="true"? However, such case isn't there without chrome // permission script. if (IsReadonly()) { // We still want to allow selection in a readonly editor. content = do_QueryInterface(GetRoot()); return content.forget(); } if (!content->HasFlag(NODE_IS_EDITABLE)) { // If the content is in read-write state but is not editable itself, // return it as the selection root. if (content->IsElement() && content->AsElement()->State().HasState(NS_EVENT_STATE_MOZ_READWRITE)) { return content.forget(); } return nullptr; } // For non-readonly editors we want to find the root of the editable subtree // containing aContent. content = content->GetEditingHost(); return content.forget(); } void HTMLEditor::CreateEventListeners() { // Don't create the handler twice if (!mEventListener) { mEventListener = new HTMLEditorEventListener(); } } nsresult HTMLEditor::InstallEventListeners() { NS_ENSURE_TRUE(mDocWeak && mEventListener, NS_ERROR_NOT_INITIALIZED); // NOTE: HTMLEditor doesn't need to initialize mEventTarget here because // the target must be document node and it must be referenced as weak pointer. HTMLEditorEventListener* listener = reinterpret_cast<HTMLEditorEventListener*>(mEventListener.get()); return listener->Connect(this); } void HTMLEditor::RemoveEventListeners() { if (!mDocWeak) { return; } nsCOMPtr<nsIDOMEventTarget> target = GetDOMEventTarget(); if (target) { // Both mMouseMotionListenerP and mResizeEventListenerP can be // registerd with other targets than the DOM event receiver that // we can reach from here. But nonetheless, unregister the event // listeners with the DOM event reveiver (if it's registerd with // other targets, it'll get unregisterd once the target goes // away). if (mMouseMotionListenerP) { // mMouseMotionListenerP might be registerd either as bubbling or // capturing, unregister by both. target->RemoveEventListener(NS_LITERAL_STRING("mousemove"), mMouseMotionListenerP, false); target->RemoveEventListener(NS_LITERAL_STRING("mousemove"), mMouseMotionListenerP, true); } if (mResizeEventListenerP) { target->RemoveEventListener(NS_LITERAL_STRING("resize"), mResizeEventListenerP, false); } } mMouseMotionListenerP = nullptr; mResizeEventListenerP = nullptr; TextEditor::RemoveEventListeners(); } NS_IMETHODIMP HTMLEditor::SetFlags(uint32_t aFlags) { nsresult rv = TextEditor::SetFlags(aFlags); NS_ENSURE_SUCCESS(rv, rv); // Sets mCSSAware to correspond to aFlags. This toggles whether CSS is // used to style elements in the editor. Note that the editor is only CSS // aware by default in Composer and in the mail editor. mCSSAware = !NoCSS() && !IsMailEditor(); return NS_OK; } NS_IMETHODIMP HTMLEditor::InitRules() { if (!mRules) { // instantiate the rules for the html editor mRules = new HTMLEditRules(); } return mRules->Init(static_cast<TextEditor*>(this)); } NS_IMETHODIMP HTMLEditor::BeginningOfDocument() { if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; } // Get the selection RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED); // Get the root element. nsCOMPtr<Element> rootElement = GetRoot(); if (!rootElement) { NS_WARNING("GetRoot() returned a null pointer (mRootElement is null)"); return NS_OK; } // Find first editable thingy bool done = false; nsCOMPtr<nsINode> curNode = rootElement.get(), selNode; int32_t curOffset = 0, selOffset = 0; while (!done) { WSRunObject wsObj(this, curNode, curOffset); int32_t visOffset = 0; WSType visType; nsCOMPtr<nsINode> visNode; wsObj.NextVisibleNode(curNode, curOffset, address_of(visNode), &visOffset, &visType); if (visType == WSType::normalWS || visType == WSType::text) { selNode = visNode; selOffset = visOffset; done = true; } else if (visType == WSType::br || visType == WSType::special) { selNode = visNode->GetParentNode(); selOffset = selNode ? selNode->IndexOf(visNode) : -1; done = true; } else if (visType == WSType::otherBlock) { // By definition of WSRunObject, a block element terminates a // whitespace run. That is, although we are calling a method that is // named "NextVisibleNode", the node returned might not be // visible/editable! // // If the given block does not contain any visible/editable items, we // want to skip it and continue our search. if (!IsContainer(visNode)) { // However, we were given a block that is not a container. Since the // block can not contain anything that's visible, such a block only // makes sense if it is visible by itself, like a <hr>. We want to // place the caret in front of that block. selNode = visNode->GetParentNode(); selOffset = selNode ? selNode->IndexOf(visNode) : -1; done = true; } else { bool isEmptyBlock; if (NS_SUCCEEDED(IsEmptyNode(visNode, &isEmptyBlock)) && isEmptyBlock) { // Skip the empty block curNode = visNode->GetParentNode(); curOffset = curNode ? curNode->IndexOf(visNode) : -1; curOffset++; } else { curNode = visNode; curOffset = 0; } // Keep looping } } else { // Else we found nothing useful selNode = curNode; selOffset = curOffset; done = true; } } return selection->Collapse(selNode, selOffset); } nsresult HTMLEditor::HandleKeyPressEvent(nsIDOMKeyEvent* aKeyEvent) { // NOTE: When you change this method, you should also change: // * editor/libeditor/tests/test_htmleditor_keyevent_handling.html if (IsReadonly() || IsDisabled()) { // When we're not editable, the events are handled on EditorBase, so, we can // bypass TextEditor. return EditorBase::HandleKeyPressEvent(aKeyEvent); } WidgetKeyboardEvent* nativeKeyEvent = aKeyEvent->AsEvent()->WidgetEventPtr()->AsKeyboardEvent(); NS_ENSURE_TRUE(nativeKeyEvent, NS_ERROR_UNEXPECTED); NS_ASSERTION(nativeKeyEvent->mMessage == eKeyPress, "HandleKeyPressEvent gets non-keypress event"); switch (nativeKeyEvent->mKeyCode) { case NS_VK_META: case NS_VK_WIN: case NS_VK_SHIFT: case NS_VK_CONTROL: case NS_VK_ALT: case NS_VK_BACK: case NS_VK_DELETE: // These keys are handled on EditorBase, so, we can bypass // TextEditor. return EditorBase::HandleKeyPressEvent(aKeyEvent); case NS_VK_TAB: { if (IsPlaintextEditor()) { // If this works as plain text editor, e.g., mail editor for plain // text, should be handled on TextEditor. return TextEditor::HandleKeyPressEvent(aKeyEvent); } if (IsTabbable()) { return NS_OK; // let it be used for focus switching } if (nativeKeyEvent->IsControl() || nativeKeyEvent->IsAlt() || nativeKeyEvent->IsMeta() || nativeKeyEvent->IsOS()) { return NS_OK; } RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection && selection->RangeCount(), NS_ERROR_FAILURE); nsCOMPtr<nsINode> node = selection->GetRangeAt(0)->GetStartParent(); MOZ_ASSERT(node); nsCOMPtr<Element> blockParent = GetBlock(*node); if (!blockParent) { break; } bool handled = false; nsresult rv = NS_OK; if (HTMLEditUtils::IsTableElement(blockParent)) { rv = TabInTable(nativeKeyEvent->IsShift(), &handled); if (handled) { ScrollSelectionIntoView(false); } } else if (HTMLEditUtils::IsListItem(blockParent)) { rv = Indent(nativeKeyEvent->IsShift() ? NS_LITERAL_STRING("outdent") : NS_LITERAL_STRING("indent")); handled = true; } NS_ENSURE_SUCCESS(rv, rv); if (handled) { return aKeyEvent->AsEvent()->PreventDefault(); // consumed } if (nativeKeyEvent->IsShift()) { return NS_OK; // don't type text for shift tabs } aKeyEvent->AsEvent()->PreventDefault(); return TypedText(NS_LITERAL_STRING("\t"), eTypedText); } case NS_VK_RETURN: if (nativeKeyEvent->IsControl() || nativeKeyEvent->IsAlt() || nativeKeyEvent->IsMeta() || nativeKeyEvent->IsOS()) { return NS_OK; } aKeyEvent->AsEvent()->PreventDefault(); // consumed if (nativeKeyEvent->IsShift() && !IsPlaintextEditor()) { // only inserts a br node return TypedText(EmptyString(), eTypedBR); } // uses rules to figure out what to insert return TypedText(EmptyString(), eTypedBreak); } // NOTE: On some keyboard layout, some characters are inputted with Control // key or Alt key, but at that time, widget sets FALSE to these keys. if (!nativeKeyEvent->mCharCode || nativeKeyEvent->IsControl() || nativeKeyEvent->IsAlt() || nativeKeyEvent->IsMeta() || nativeKeyEvent->IsOS()) { // we don't PreventDefault() here or keybindings like control-x won't work return NS_OK; } aKeyEvent->AsEvent()->PreventDefault(); nsAutoString str(nativeKeyEvent->mCharCode); return TypedText(str, eTypedText); } static void AssertParserServiceIsCorrect(nsIAtom* aTag, bool aIsBlock) { #ifdef DEBUG // Check this against what we would have said with the old code: if (aTag == nsGkAtoms::p || aTag == nsGkAtoms::div || aTag == nsGkAtoms::blockquote || aTag == nsGkAtoms::h1 || aTag == nsGkAtoms::h2 || aTag == nsGkAtoms::h3 || aTag == nsGkAtoms::h4 || aTag == nsGkAtoms::h5 || aTag == nsGkAtoms::h6 || aTag == nsGkAtoms::ul || aTag == nsGkAtoms::ol || aTag == nsGkAtoms::dl || aTag == nsGkAtoms::noscript || aTag == nsGkAtoms::form || aTag == nsGkAtoms::hr || aTag == nsGkAtoms::table || aTag == nsGkAtoms::fieldset || aTag == nsGkAtoms::address || aTag == nsGkAtoms::col || aTag == nsGkAtoms::colgroup || aTag == nsGkAtoms::li || aTag == nsGkAtoms::dt || aTag == nsGkAtoms::dd || aTag == nsGkAtoms::legend) { if (!aIsBlock) { nsAutoString assertmsg (NS_LITERAL_STRING("Parser and editor disagree on blockness: ")); nsAutoString tagName; aTag->ToString(tagName); assertmsg.Append(tagName); char* assertstr = ToNewCString(assertmsg); NS_ASSERTION(aIsBlock, assertstr); free(assertstr); } } #endif // DEBUG } /** * Returns true if the id represents an element of block type. * Can be used to determine if a new paragraph should be started. */ bool HTMLEditor::NodeIsBlockStatic(const nsINode* aElement) { MOZ_ASSERT(aElement); // Nodes we know we want to treat as block // even though the parser says they're not: if (aElement->IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::head, nsGkAtoms::tbody, nsGkAtoms::thead, nsGkAtoms::tfoot, nsGkAtoms::tr, nsGkAtoms::th, nsGkAtoms::td, nsGkAtoms::li, nsGkAtoms::dt, nsGkAtoms::dd, nsGkAtoms::pre)) { return true; } bool isBlock; #ifdef DEBUG // XXX we can't use DebugOnly here because VC++ is stupid (bug 802884) nsresult rv = #endif nsContentUtils::GetParserService()-> IsBlock(nsContentUtils::GetParserService()->HTMLAtomTagToId( aElement->NodeInfo()->NameAtom()), isBlock); MOZ_ASSERT(rv == NS_OK); AssertParserServiceIsCorrect(aElement->NodeInfo()->NameAtom(), isBlock); return isBlock; } nsresult HTMLEditor::NodeIsBlockStatic(nsIDOMNode* aNode, bool* aIsBlock) { if (!aNode || !aIsBlock) { return NS_ERROR_NULL_POINTER; } nsCOMPtr<dom::Element> element = do_QueryInterface(aNode); *aIsBlock = element && NodeIsBlockStatic(element); return NS_OK; } NS_IMETHODIMP HTMLEditor::NodeIsBlock(nsIDOMNode* aNode, bool* aIsBlock) { return NodeIsBlockStatic(aNode, aIsBlock); } bool HTMLEditor::IsBlockNode(nsINode* aNode) { return aNode && NodeIsBlockStatic(aNode); } // Non-static version for the nsIEditor interface and JavaScript NS_IMETHODIMP HTMLEditor::SetDocumentTitle(const nsAString& aTitle) { RefPtr<SetDocumentTitleTransaction> transaction = new SetDocumentTitleTransaction(); NS_ENSURE_TRUE(transaction, NS_ERROR_OUT_OF_MEMORY); nsresult rv = transaction->Init(this, &aTitle); NS_ENSURE_SUCCESS(rv, rv); //Don't let Rules System change the selection AutoTransactionsConserveSelection dontChangeSelection(this); return EditorBase::DoTransaction(transaction); } /** * GetBlockNodeParent returns enclosing block level ancestor, if any. */ Element* HTMLEditor::GetBlockNodeParent(nsINode* aNode) { MOZ_ASSERT(aNode); nsCOMPtr<nsINode> p = aNode->GetParentNode(); while (p) { if (NodeIsBlockStatic(p)) { return p->AsElement(); } p = p->GetParentNode(); } return nullptr; } nsIDOMNode* HTMLEditor::GetBlockNodeParent(nsIDOMNode* aNode) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); if (!node) { NS_NOTREACHED("null node passed to GetBlockNodeParent()"); return nullptr; } return GetAsDOMNode(GetBlockNodeParent(node)); } /** * Returns the node if it's a block, otherwise GetBlockNodeParent */ Element* HTMLEditor::GetBlock(nsINode& aNode) { if (NodeIsBlockStatic(&aNode)) { return aNode.AsElement(); } return GetBlockNodeParent(&aNode); } /** * IsNextCharInNodeWhitespace() checks the adjacent content in the same node to * see if following selection is whitespace or nbsp. */ void HTMLEditor::IsNextCharInNodeWhitespace(nsIContent* aContent, int32_t aOffset, bool* outIsSpace, bool* outIsNBSP, nsIContent** outNode, int32_t* outOffset) { MOZ_ASSERT(aContent && outIsSpace && outIsNBSP); MOZ_ASSERT((outNode && outOffset) || (!outNode && !outOffset)); *outIsSpace = false; *outIsNBSP = false; if (outNode && outOffset) { *outNode = nullptr; *outOffset = -1; } if (aContent->IsNodeOfType(nsINode::eTEXT) && (uint32_t)aOffset < aContent->Length()) { char16_t ch = aContent->GetText()->CharAt(aOffset); *outIsSpace = nsCRT::IsAsciiSpace(ch); *outIsNBSP = (ch == kNBSP); if (outNode && outOffset) { NS_IF_ADDREF(*outNode = aContent); // yes, this is _past_ the character *outOffset = aOffset + 1; } } } /** * IsPrevCharInNodeWhitespace() checks the adjacent content in the same node to * see if following selection is whitespace. */ void HTMLEditor::IsPrevCharInNodeWhitespace(nsIContent* aContent, int32_t aOffset, bool* outIsSpace, bool* outIsNBSP, nsIContent** outNode, int32_t* outOffset) { MOZ_ASSERT(aContent && outIsSpace && outIsNBSP); MOZ_ASSERT((outNode && outOffset) || (!outNode && !outOffset)); *outIsSpace = false; *outIsNBSP = false; if (outNode && outOffset) { *outNode = nullptr; *outOffset = -1; } if (aContent->IsNodeOfType(nsINode::eTEXT) && aOffset > 0) { char16_t ch = aContent->GetText()->CharAt(aOffset - 1); *outIsSpace = nsCRT::IsAsciiSpace(ch); *outIsNBSP = (ch == kNBSP); if (outNode && outOffset) { NS_IF_ADDREF(*outNode = aContent); *outOffset = aOffset - 1; } } } bool HTMLEditor::IsVisBreak(nsINode* aNode) { MOZ_ASSERT(aNode); if (!TextEditUtils::IsBreak(aNode)) { return false; } // Check if there is a later node in block after br nsCOMPtr<nsINode> nextNode = GetNextHTMLNode(aNode, true); if (nextNode && TextEditUtils::IsBreak(nextNode)) { return true; } // A single line break before a block boundary is not displayed, so e.g. // foo<p>bar<br></p> and foo<br><p>bar</p> display the same as foo<p>bar</p>. // But if there are multiple <br>s in a row, all but the last are visible. if (!nextNode) { // This break is trailer in block, it's not visible return false; } if (IsBlockNode(nextNode)) { // Break is right before a block, it's not visible return false; } // If there's an inline node after this one that's not a break, and also a // prior break, this break must be visible. nsCOMPtr<nsINode> priorNode = GetPriorHTMLNode(aNode, true); if (priorNode && TextEditUtils::IsBreak(priorNode)) { return true; } // Sigh. We have to use expensive whitespace calculation code to // determine what is going on int32_t selOffset; nsCOMPtr<nsINode> selNode = GetNodeLocation(aNode, &selOffset); // Let's look after the break selOffset++; WSRunObject wsObj(this, selNode, selOffset); nsCOMPtr<nsINode> unused; int32_t visOffset = 0; WSType visType; wsObj.NextVisibleNode(selNode, selOffset, address_of(unused), &visOffset, &visType); if (visType & WSType::block) { return false; } return true; } NS_IMETHODIMP HTMLEditor::GetIsDocumentEditable(bool* aIsDocumentEditable) { NS_ENSURE_ARG_POINTER(aIsDocumentEditable); nsCOMPtr<nsIDOMDocument> doc = GetDOMDocument(); *aIsDocumentEditable = doc && IsModifiable(); return NS_OK; } bool HTMLEditor::IsModifiable() { return !IsReadonly(); } NS_IMETHODIMP HTMLEditor::UpdateBaseURL() { nsCOMPtr<nsIDocument> doc = GetDocument(); NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE); // Look for an HTML <base> tag RefPtr<nsContentList> nodeList = doc->GetElementsByTagName(NS_LITERAL_STRING("base")); // If no base tag, then set baseURL to the document's URL. This is very // important, else relative URLs for links and images are wrong if (!nodeList || !nodeList->Item(0)) { doc->SetBaseURI(doc->GetDocumentURI()); } return NS_OK; } /** * This routine is needed to provide a bottleneck for typing for logging * purposes. Can't use HandleKeyPress() (above) for that since it takes * a nsIDOMKeyEvent* parameter. So instead we pass enough info through * to TypedText() to determine what action to take, but without passing * an event. */ NS_IMETHODIMP HTMLEditor::TypedText(const nsAString& aString, ETypingAction aAction) { AutoPlaceHolderBatch batch(this, nsGkAtoms::TypingTxnName); if (aAction == eTypedBR) { // only inserts a br node nsCOMPtr<nsIDOMNode> brNode; return InsertBR(address_of(brNode)); } return TextEditor::TypedText(aString, aAction); } NS_IMETHODIMP HTMLEditor::TabInTable(bool inIsShift, bool* outHandled) { NS_ENSURE_TRUE(outHandled, NS_ERROR_NULL_POINTER); *outHandled = false; // Find enclosing table cell from selection (cell may be selected element) nsCOMPtr<Element> cellElement = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr); // Do nothing -- we didn't find a table cell NS_ENSURE_TRUE(cellElement, NS_OK); // find enclosing table nsCOMPtr<Element> table = GetEnclosingTable(cellElement); NS_ENSURE_TRUE(table, NS_OK); // advance to next cell // first create an iterator over the table nsCOMPtr<nsIContentIterator> iter = NS_NewContentIterator(); nsresult rv = iter->Init(table); NS_ENSURE_SUCCESS(rv, rv); // position iter at block rv = iter->PositionAt(cellElement); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<nsINode> node; do { if (inIsShift) { iter->Prev(); } else { iter->Next(); } node = iter->GetCurrentNode(); if (node && HTMLEditUtils::IsTableCell(node) && GetEnclosingTable(node) == table) { CollapseSelectionToDeepestNonTableFirstChild(nullptr, node); *outHandled = true; return NS_OK; } } while (!iter->IsDone()); if (!(*outHandled) && !inIsShift) { // If we haven't handled it yet, then we must have run off the end of the // table. Insert a new row. rv = InsertTableRow(1, true); NS_ENSURE_SUCCESS(rv, rv); *outHandled = true; // Put selection in right place. Use table code to get selection and index // to new row... RefPtr<Selection> selection; nsCOMPtr<nsIDOMElement> tblElement, cell; int32_t row; rv = GetCellContext(getter_AddRefs(selection), getter_AddRefs(tblElement), getter_AddRefs(cell), nullptr, nullptr, &row, nullptr); NS_ENSURE_SUCCESS(rv, rv); // ...so that we can ask for first cell in that row... rv = GetCellAt(tblElement, row, 0, getter_AddRefs(cell)); NS_ENSURE_SUCCESS(rv, rv); // ...and then set selection there. (Note that normally you should use // CollapseSelectionToDeepestNonTableFirstChild(), but we know cell is an // empty new cell, so this works fine) if (cell) { selection->Collapse(cell, 0); } } return NS_OK; } already_AddRefed<Element> HTMLEditor::CreateBR(nsINode* aNode, int32_t aOffset, EDirection aSelect) { nsCOMPtr<nsIDOMNode> parent = GetAsDOMNode(aNode); int32_t offset = aOffset; nsCOMPtr<nsIDOMNode> outBRNode; // We assume everything is fine if the br is not null, irrespective of retval CreateBRImpl(address_of(parent), &offset, address_of(outBRNode), aSelect); nsCOMPtr<Element> ret = do_QueryInterface(outBRNode); return ret.forget(); } NS_IMETHODIMP HTMLEditor::CreateBR(nsIDOMNode* aNode, int32_t aOffset, nsCOMPtr<nsIDOMNode>* outBRNode, EDirection aSelect) { nsCOMPtr<nsIDOMNode> parent = aNode; int32_t offset = aOffset; return CreateBRImpl(address_of(parent), &offset, outBRNode, aSelect); } void HTMLEditor::CollapseSelectionToDeepestNonTableFirstChild(Selection* aSelection, nsINode* aNode) { MOZ_ASSERT(aNode); RefPtr<Selection> selection = aSelection; if (!selection) { selection = GetSelection(); } if (!selection) { // Nothing to do return; } nsCOMPtr<nsINode> node = aNode; for (nsCOMPtr<nsIContent> child = node->GetFirstChild(); child; child = child->GetFirstChild()) { // Stop if we find a table, don't want to go into nested tables if (HTMLEditUtils::IsTable(child) || !IsContainer(child)) { break; } node = child; } selection->Collapse(node, 0); } /** * This is mostly like InsertHTMLWithCharsetAndContext, but we can't use that * because it is selection-based and the rules code won't let us edit under the * <head> node */ NS_IMETHODIMP HTMLEditor::ReplaceHeadContentsWithHTML(const nsAString& aSourceToInsert) { // don't do any post processing, rules get confused AutoRules beginRulesSniffing(this, EditAction::ignore, nsIEditor::eNone); RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); ForceCompositionEnd(); // Do not use AutoRules -- rules code won't let us insert in <head>. Use // the head node as a parent and delete/insert directly. nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED); RefPtr<nsContentList> nodeList = doc->GetElementsByTagName(NS_LITERAL_STRING("head")); NS_ENSURE_TRUE(nodeList, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIContent> headNode = nodeList->Item(0); NS_ENSURE_TRUE(headNode, NS_ERROR_NULL_POINTER); // First, make sure there are no return chars in the source. Bad things // happen if you insert returns (instead of dom newlines, \n) into an editor // document. nsAutoString inputString (aSourceToInsert); // hope this does copy-on-write // Windows linebreaks: Map CRLF to LF: inputString.ReplaceSubstring(u"\r\n", u"\n"); // Mac linebreaks: Map any remaining CR to LF: inputString.ReplaceSubstring(u"\r", u"\n"); AutoEditBatch beginBatching(this); // Get the first range in the selection, for context: RefPtr<nsRange> range = selection->GetRangeAt(0); NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER); ErrorResult err; RefPtr<DocumentFragment> docfrag = range->CreateContextualFragment(inputString, err); // XXXX BUG 50965: This is not returning the text between <title>...</title> // Special code is needed in JS to handle title anyway, so it doesn't matter! if (err.Failed()) { #ifdef DEBUG printf("Couldn't create contextual fragment: error was %X\n", err.ErrorCodeAsInt()); #endif return err.StealNSResult(); } NS_ENSURE_TRUE(docfrag, NS_ERROR_NULL_POINTER); // First delete all children in head while (nsCOMPtr<nsIContent> child = headNode->GetFirstChild()) { nsresult rv = DeleteNode(child); NS_ENSURE_SUCCESS(rv, rv); } // Now insert the new nodes int32_t offsetOfNewNode = 0; // Loop over the contents of the fragment and move into the document while (nsCOMPtr<nsIContent> child = docfrag->GetFirstChild()) { nsresult rv = InsertNode(*child, *headNode, offsetOfNewNode++); NS_ENSURE_SUCCESS(rv, rv); } return NS_OK; } NS_IMETHODIMP HTMLEditor::RebuildDocumentFromSource(const nsAString& aSourceString) { ForceCompositionEnd(); RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); nsCOMPtr<Element> bodyElement = GetRoot(); NS_ENSURE_TRUE(bodyElement, NS_ERROR_NULL_POINTER); // Find where the <body> tag starts. nsReadingIterator<char16_t> beginbody; nsReadingIterator<char16_t> endbody; aSourceString.BeginReading(beginbody); aSourceString.EndReading(endbody); bool foundbody = CaseInsensitiveFindInReadable(NS_LITERAL_STRING("<body"), beginbody, endbody); nsReadingIterator<char16_t> beginhead; nsReadingIterator<char16_t> endhead; aSourceString.BeginReading(beginhead); aSourceString.EndReading(endhead); bool foundhead = CaseInsensitiveFindInReadable(NS_LITERAL_STRING("<head"), beginhead, endhead); // a valid head appears before the body if (foundbody && beginhead.get() > beginbody.get()) { foundhead = false; } nsReadingIterator<char16_t> beginclosehead; nsReadingIterator<char16_t> endclosehead; aSourceString.BeginReading(beginclosehead); aSourceString.EndReading(endclosehead); // Find the index after "<head>" bool foundclosehead = CaseInsensitiveFindInReadable( NS_LITERAL_STRING("</head>"), beginclosehead, endclosehead); // a valid close head appears after a found head if (foundhead && beginhead.get() > beginclosehead.get()) { foundclosehead = false; } // a valid close head appears before a found body if (foundbody && beginclosehead.get() > beginbody.get()) { foundclosehead = false; } // Time to change the document AutoEditBatch beginBatching(this); nsReadingIterator<char16_t> endtotal; aSourceString.EndReading(endtotal); if (foundhead) { if (foundclosehead) { nsresult rv = ReplaceHeadContentsWithHTML(Substring(beginhead, beginclosehead)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else if (foundbody) { nsresult rv = ReplaceHeadContentsWithHTML(Substring(beginhead, beginbody)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else { // XXX Without recourse to some parser/content sink/docshell hackery we // don't really know where the head ends and the body begins so we assume // that there is no body nsresult rv = ReplaceHeadContentsWithHTML(Substring(beginhead, endtotal)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } } else { nsReadingIterator<char16_t> begintotal; aSourceString.BeginReading(begintotal); NS_NAMED_LITERAL_STRING(head, "<head>"); if (foundclosehead) { nsresult rv = ReplaceHeadContentsWithHTML(head + Substring(begintotal, beginclosehead)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else if (foundbody) { nsresult rv = ReplaceHeadContentsWithHTML(head + Substring(begintotal, beginbody)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else { // XXX Without recourse to some parser/content sink/docshell hackery we // don't really know where the head ends and the body begins so we assume // that there is no head nsresult rv = ReplaceHeadContentsWithHTML(head); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } } nsresult rv = SelectAll(); NS_ENSURE_SUCCESS(rv, rv); if (!foundbody) { NS_NAMED_LITERAL_STRING(body, "<body>"); // XXX Without recourse to some parser/content sink/docshell hackery we // don't really know where the head ends and the body begins if (foundclosehead) { // assume body starts after the head ends nsresult rv = LoadHTML(body + Substring(endclosehead, endtotal)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else if (foundhead) { // assume there is no body nsresult rv = LoadHTML(body); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else { // assume there is no head, the entire source is body nsresult rv = LoadHTML(body + aSourceString); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } nsCOMPtr<Element> divElement = CreateElementWithDefaults(NS_LITERAL_STRING("div")); NS_ENSURE_TRUE(divElement, NS_ERROR_FAILURE); CloneAttributes(bodyElement, divElement); return BeginningOfDocument(); } rv = LoadHTML(Substring(beginbody, endtotal)); NS_ENSURE_SUCCESS(rv, rv); // Now we must copy attributes user might have edited on the <body> tag // because InsertHTML (actually, CreateContextualFragment()) will never // return a body node in the DOM fragment // We already know where "<body" begins nsReadingIterator<char16_t> beginclosebody = beginbody; nsReadingIterator<char16_t> endclosebody; aSourceString.EndReading(endclosebody); if (!FindInReadable(NS_LITERAL_STRING(">"), beginclosebody, endclosebody)) { return NS_ERROR_FAILURE; } // Truncate at the end of the body tag. Kludge of the year: fool the parser // by replacing "body" with "div" so we get a node nsAutoString bodyTag; bodyTag.AssignLiteral("<div "); bodyTag.Append(Substring(endbody, endclosebody)); RefPtr<nsRange> range = selection->GetRangeAt(0); NS_ENSURE_TRUE(range, NS_ERROR_FAILURE); ErrorResult erv; RefPtr<DocumentFragment> docfrag = range->CreateContextualFragment(bodyTag, erv); NS_ENSURE_TRUE(!erv.Failed(), erv.StealNSResult()); NS_ENSURE_TRUE(docfrag, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIContent> child = docfrag->GetFirstChild(); NS_ENSURE_TRUE(child && child->IsElement(), NS_ERROR_NULL_POINTER); // Copy all attributes from the div child to current body element CloneAttributes(bodyElement, child->AsElement()); // place selection at first editable content return BeginningOfDocument(); } void HTMLEditor::NormalizeEOLInsertPosition(nsINode* firstNodeToInsert, nsCOMPtr<nsIDOMNode>* insertParentNode, int32_t* insertOffset) { /* This function will either correct the position passed in, or leave the position unchanged. When the (first) item to insert is a block level element, and our insertion position is after the last visible item in a line, i.e. the insertion position is just before a visible line break <br>, we want to skip to the position just after the line break (see bug 68767) However, our logic to detect whether we should skip or not needs to be more clever. We must not skip when the caret appears to be positioned at the beginning of a block, in that case skipping the <br> would not insert the <br> at the caret position, but after the current empty line. So we have several cases to test: 1) We only ever want to skip, if the next visible thing after the current position is a break 2) We do not want to skip if there is no previous visible thing at all That is detected if the call to PriorVisibleNode gives us an offset of zero. Because PriorVisibleNode always positions after the prior node, we would see an offset > 0, if there were a prior node. 3) We do not want to skip, if both the next and the previous visible things are breaks. 4) We do not want to skip if the previous visible thing is in a different block than the insertion position. */ if (!IsBlockNode(firstNodeToInsert)) { return; } WSRunObject wsObj(this, *insertParentNode, *insertOffset); nsCOMPtr<nsINode> nextVisNode, prevVisNode; int32_t nextVisOffset=0; WSType nextVisType; int32_t prevVisOffset=0; WSType prevVisType; nsCOMPtr<nsINode> parent(do_QueryInterface(*insertParentNode)); wsObj.NextVisibleNode(parent, *insertOffset, address_of(nextVisNode), &nextVisOffset, &nextVisType); if (!nextVisNode) { return; } if (!(nextVisType & WSType::br)) { return; } wsObj.PriorVisibleNode(parent, *insertOffset, address_of(prevVisNode), &prevVisOffset, &prevVisType); if (!prevVisNode) { return; } if (prevVisType & WSType::br) { return; } if (prevVisType & WSType::thisBlock) { return; } int32_t brOffset=0; nsCOMPtr<nsIDOMNode> brNode = GetNodeLocation(GetAsDOMNode(nextVisNode), &brOffset); *insertParentNode = brNode; *insertOffset = brOffset + 1; } NS_IMETHODIMP HTMLEditor::InsertElementAtSelection(nsIDOMElement* aElement, bool aDeleteSelection) { // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); nsCOMPtr<Element> element = do_QueryInterface(aElement); NS_ENSURE_TRUE(element, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aElement); ForceCompositionEnd(); AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::insertElement, nsIEditor::eNext); RefPtr<Selection> selection = GetSelection(); if (!selection) { return NS_ERROR_FAILURE; } // hand off to the rules system, see if it has anything to say about this bool cancel, handled; TextRulesInfo ruleInfo(EditAction::insertElement); ruleInfo.insertElement = aElement; nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } if (!handled) { if (aDeleteSelection) { if (!IsBlockNode(element)) { // E.g., inserting an image. In this case we don't need to delete any // inline wrappers before we do the insertion. Otherwise we let // DeleteSelectionAndPrepareToCreateNode do the deletion for us, which // calls DeleteSelection with aStripWrappers = eStrip. rv = DeleteSelection(nsIEditor::eNone, nsIEditor::eNoStrip); NS_ENSURE_SUCCESS(rv, rv); } nsresult rv = DeleteSelectionAndPrepareToCreateNode(); NS_ENSURE_SUCCESS(rv, rv); } // If deleting, selection will be collapsed. // so if not, we collapse it if (!aDeleteSelection) { // Named Anchor is a special case, // We collapse to insert element BEFORE the selection // For all other tags, we insert AFTER the selection if (HTMLEditUtils::IsNamedAnchor(node)) { selection->CollapseToStart(); } else { selection->CollapseToEnd(); } } nsCOMPtr<nsIDOMNode> parentSelectedNode; int32_t offsetForInsert; rv = selection->GetAnchorNode(getter_AddRefs(parentSelectedNode)); // XXX: ERROR_HANDLING bad XPCOM usage if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(selection->GetAnchorOffset(&offsetForInsert)) && parentSelectedNode) { // Adjust position based on the node we are going to insert. NormalizeEOLInsertPosition(element, address_of(parentSelectedNode), &offsetForInsert); rv = InsertNodeAtPoint(node, address_of(parentSelectedNode), &offsetForInsert, false); NS_ENSURE_SUCCESS(rv, rv); // Set caret after element, but check for special case // of inserting table-related elements: set in first cell instead if (!SetCaretInTableCell(aElement)) { rv = SetCaretAfterElement(aElement); NS_ENSURE_SUCCESS(rv, rv); } // check for inserting a whole table at the end of a block. If so insert a br after it. if (HTMLEditUtils::IsTable(node)) { bool isLast; rv = IsLastEditableChild(node, &isLast); NS_ENSURE_SUCCESS(rv, rv); if (isLast) { nsCOMPtr<nsIDOMNode> brNode; rv = CreateBR(parentSelectedNode, offsetForInsert + 1, address_of(brNode)); NS_ENSURE_SUCCESS(rv, rv); selection->Collapse(parentSelectedNode, offsetForInsert+1); } } } } rv = rules->DidDoAction(selection, &ruleInfo, rv); return rv; } /** * InsertNodeAtPoint() attempts to insert aNode into the document, at a point * specified by {*ioParent,*ioOffset}. Checks with strict dtd to see if * containment is allowed. If not allowed, will attempt to find a parent in * the parent hierarchy of *ioParent that will accept aNode as a child. If * such a parent is found, will split the document tree from * {*ioParent,*ioOffset} up to parent, and then insert aNode. * ioParent & ioOffset are then adjusted to point to the actual location that * aNode was inserted at. aNoEmptyNodes specifies if the splitting process * is allowed to reslt in empty nodes. * * @param aNode Node to insert. * @param ioParent Insertion parent. * @param ioOffset Insertion offset. * @param aNoEmptyNodes Splitting can result in empty nodes? */ nsresult HTMLEditor::InsertNodeAtPoint(nsIDOMNode* aNode, nsCOMPtr<nsIDOMNode>* ioParent, int32_t* ioOffset, bool aNoEmptyNodes) { nsCOMPtr<nsIContent> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); NS_ENSURE_TRUE(ioParent, NS_ERROR_NULL_POINTER); NS_ENSURE_TRUE(*ioParent, NS_ERROR_NULL_POINTER); NS_ENSURE_TRUE(ioOffset, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIContent> parent = do_QueryInterface(*ioParent); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIContent> topChild = parent; nsCOMPtr<nsIContent> origParent = parent; // Search up the parent chain to find a suitable container while (!CanContain(*parent, *node)) { // If the current parent is a root (body or table element) // then go no further - we can't insert if (parent->IsHTMLElement(nsGkAtoms::body) || HTMLEditUtils::IsTableElement(parent)) { return NS_ERROR_FAILURE; } // Get the next parent NS_ENSURE_TRUE(parent->GetParentNode(), NS_ERROR_FAILURE); if (!IsEditable(parent->GetParentNode())) { // There's no suitable place to put the node in this editing host. Maybe // someone is trying to put block content in a span. So just put it // where we were originally asked. parent = topChild = origParent; break; } topChild = parent; parent = parent->GetParent(); } if (parent != topChild) { // we need to split some levels above the original selection parent int32_t offset = SplitNodeDeep(*topChild, *origParent, *ioOffset, aNoEmptyNodes ? EmptyContainers::no : EmptyContainers::yes); NS_ENSURE_STATE(offset != -1); *ioParent = GetAsDOMNode(parent); *ioOffset = offset; } // Now we can insert the new node return InsertNode(*node, *parent, *ioOffset); } NS_IMETHODIMP HTMLEditor::SelectElement(nsIDOMElement* aElement) { nsCOMPtr<Element> element = do_QueryInterface(aElement); NS_ENSURE_STATE(element || !aElement); // Must be sure that element is contained in the document body if (!IsDescendantOfEditorRoot(element)) { return NS_ERROR_NULL_POINTER; } RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIDOMNode>parent; nsresult rv = aElement->GetParentNode(getter_AddRefs(parent)); if (NS_SUCCEEDED(rv) && parent) { int32_t offsetInParent = GetChildOffset(aElement, parent); // Collapse selection to just before desired element, rv = selection->Collapse(parent, offsetInParent); if (NS_SUCCEEDED(rv)) { // then extend it to just after rv = selection->Extend(parent, offsetInParent + 1); } } return rv; } NS_IMETHODIMP HTMLEditor::SetCaretAfterElement(nsIDOMElement* aElement) { nsCOMPtr<Element> element = do_QueryInterface(aElement); NS_ENSURE_STATE(element || !aElement); // Be sure the element is contained in the document body if (!aElement || !IsDescendantOfEditorRoot(element)) { return NS_ERROR_NULL_POINTER; } RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIDOMNode>parent; nsresult rv = aElement->GetParentNode(getter_AddRefs(parent)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); int32_t offsetInParent = GetChildOffset(aElement, parent); // Collapse selection to just after desired element, return selection->Collapse(parent, offsetInParent + 1); } NS_IMETHODIMP HTMLEditor::SetParagraphFormat(const nsAString& aParagraphFormat) { nsAutoString tag; tag.Assign(aParagraphFormat); ToLowerCase(tag); if (tag.EqualsLiteral("dd") || tag.EqualsLiteral("dt")) { return MakeDefinitionItem(tag); } return InsertBasicBlock(tag); } NS_IMETHODIMP HTMLEditor::GetParagraphState(bool* aMixed, nsAString& outFormat) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } NS_ENSURE_TRUE(aMixed, NS_ERROR_NULL_POINTER); RefPtr<HTMLEditRules> htmlRules = static_cast<HTMLEditRules*>(mRules.get()); return htmlRules->GetParagraphState(aMixed, outFormat); } NS_IMETHODIMP HTMLEditor::GetBackgroundColorState(bool* aMixed, nsAString& aOutColor) { if (IsCSSEnabled()) { // if we are in CSS mode, we have to check if the containing block defines // a background color return GetCSSBackgroundColorState(aMixed, aOutColor, true); } // in HTML mode, we look only at page's background return GetHTMLBackgroundColorState(aMixed, aOutColor); } NS_IMETHODIMP HTMLEditor::GetHighlightColorState(bool* aMixed, nsAString& aOutColor) { *aMixed = false; aOutColor.AssignLiteral("transparent"); if (!IsCSSEnabled()) { return NS_OK; } // in CSS mode, text background can be added by the Text Highlight button // we need to query the background of the selection without looking for // the block container of the ranges in the selection return GetCSSBackgroundColorState(aMixed, aOutColor, false); } nsresult HTMLEditor::GetCSSBackgroundColorState(bool* aMixed, nsAString& aOutColor, bool aBlockLevel) { NS_ENSURE_TRUE(aMixed, NS_ERROR_NULL_POINTER); *aMixed = false; // the default background color is transparent aOutColor.AssignLiteral("transparent"); // get selection RefPtr<Selection> selection = GetSelection(); NS_ENSURE_STATE(selection && selection->GetRangeAt(0)); // get selection location nsCOMPtr<nsINode> parent = selection->GetRangeAt(0)->GetStartParent(); int32_t offset = selection->GetRangeAt(0)->StartOffset(); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); // is the selection collapsed? nsCOMPtr<nsINode> nodeToExamine; if (selection->Collapsed() || IsTextNode(parent)) { // we want to look at the parent and ancestors nodeToExamine = parent; } else { // otherwise we want to look at the first editable node after // {parent,offset} and its ancestors for divs with alignment on them nodeToExamine = parent->GetChildAt(offset); //GetNextNode(parent, offset, true, address_of(nodeToExamine)); } NS_ENSURE_TRUE(nodeToExamine, NS_ERROR_NULL_POINTER); if (aBlockLevel) { // we are querying the block background (and not the text background), let's // climb to the block container nsCOMPtr<Element> blockParent = GetBlock(*nodeToExamine); NS_ENSURE_TRUE(blockParent, NS_OK); // Make sure to not walk off onto the Document node do { // retrieve the computed style of background-color for blockParent mCSSEditUtils->GetComputedProperty(*blockParent, *nsGkAtoms::backgroundColor, aOutColor); blockParent = blockParent->GetParentElement(); // look at parent if the queried color is transparent and if the node to // examine is not the root of the document } while (aOutColor.EqualsLiteral("transparent") && blockParent); if (aOutColor.EqualsLiteral("transparent")) { // we have hit the root of the document and the color is still transparent ! // Grumble... Let's look at the default background color because that's the // color we are looking for mCSSEditUtils->GetDefaultBackgroundColor(aOutColor); } } else { // no, we are querying the text background for the Text Highlight button if (IsTextNode(nodeToExamine)) { // if the node of interest is a text node, let's climb a level nodeToExamine = nodeToExamine->GetParentNode(); } do { // is the node to examine a block ? if (NodeIsBlockStatic(nodeToExamine)) { // yes it is a block; in that case, the text background color is transparent aOutColor.AssignLiteral("transparent"); break; } else { // no, it's not; let's retrieve the computed style of background-color for the // node to examine mCSSEditUtils->GetComputedProperty(*nodeToExamine, *nsGkAtoms::backgroundColor, aOutColor); if (!aOutColor.EqualsLiteral("transparent")) { break; } } nodeToExamine = nodeToExamine->GetParentNode(); } while ( aOutColor.EqualsLiteral("transparent") && nodeToExamine ); } return NS_OK; } NS_IMETHODIMP HTMLEditor::GetHTMLBackgroundColorState(bool* aMixed, nsAString& aOutColor) { //TODO: We don't handle "mixed" correctly! NS_ENSURE_TRUE(aMixed, NS_ERROR_NULL_POINTER); *aMixed = false; aOutColor.Truncate(); nsCOMPtr<nsIDOMElement> domElement; int32_t selectedCount; nsAutoString tagName; nsresult rv = GetSelectedOrParentTableElement(tagName, &selectedCount, getter_AddRefs(domElement)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<dom::Element> element = do_QueryInterface(domElement); while (element) { // We are in a cell or selected table element->GetAttr(kNameSpaceID_None, nsGkAtoms::bgcolor, aOutColor); // Done if we have a color explicitly set if (!aOutColor.IsEmpty()) { return NS_OK; } // Once we hit the body, we're done if (element->IsHTMLElement(nsGkAtoms::body)) { return NS_OK; } // No color is set, but we need to report visible color inherited // from nested cells/tables, so search up parent chain element = element->GetParentElement(); } // If no table or cell found, get page body dom::Element* bodyElement = GetRoot(); NS_ENSURE_TRUE(bodyElement, NS_ERROR_NULL_POINTER); bodyElement->GetAttr(kNameSpaceID_None, nsGkAtoms::bgcolor, aOutColor); return NS_OK; } NS_IMETHODIMP HTMLEditor::GetListState(bool* aMixed, bool* aOL, bool* aUL, bool* aDL) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } NS_ENSURE_TRUE(aMixed && aOL && aUL && aDL, NS_ERROR_NULL_POINTER); RefPtr<HTMLEditRules> htmlRules = static_cast<HTMLEditRules*>(mRules.get()); return htmlRules->GetListState(aMixed, aOL, aUL, aDL); } NS_IMETHODIMP HTMLEditor::GetListItemState(bool* aMixed, bool* aLI, bool* aDT, bool* aDD) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } NS_ENSURE_TRUE(aMixed && aLI && aDT && aDD, NS_ERROR_NULL_POINTER); RefPtr<HTMLEditRules> htmlRules = static_cast<HTMLEditRules*>(mRules.get()); return htmlRules->GetListItemState(aMixed, aLI, aDT, aDD); } NS_IMETHODIMP HTMLEditor::GetAlignment(bool* aMixed, nsIHTMLEditor::EAlignment* aAlign) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } NS_ENSURE_TRUE(aMixed && aAlign, NS_ERROR_NULL_POINTER); RefPtr<HTMLEditRules> htmlRules = static_cast<HTMLEditRules*>(mRules.get()); return htmlRules->GetAlignment(aMixed, aAlign); } NS_IMETHODIMP HTMLEditor::GetIndentState(bool* aCanIndent, bool* aCanOutdent) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } NS_ENSURE_TRUE(aCanIndent && aCanOutdent, NS_ERROR_NULL_POINTER); RefPtr<HTMLEditRules> htmlRules = static_cast<HTMLEditRules*>(mRules.get()); return htmlRules->GetIndentState(aCanIndent, aCanOutdent); } NS_IMETHODIMP HTMLEditor::MakeOrChangeList(const nsAString& aListType, bool entireList, const nsAString& aBulletType) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); bool cancel, handled; AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::makeList, nsIEditor::eNext); // pre-process RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(EditAction::makeList); ruleInfo.blockType = &aListType; ruleInfo.entireList = entireList; ruleInfo.bulletType = &aBulletType; nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } if (!handled) { // Find out if the selection is collapsed: bool isCollapsed = selection->Collapsed(); NS_ENSURE_TRUE(selection->GetRangeAt(0) && selection->GetRangeAt(0)->GetStartParent() && selection->GetRangeAt(0)->GetStartParent()->IsContent(), NS_ERROR_FAILURE); OwningNonNull<nsIContent> node = *selection->GetRangeAt(0)->GetStartParent()->AsContent(); int32_t offset = selection->GetRangeAt(0)->StartOffset(); if (isCollapsed) { // have to find a place to put the list nsCOMPtr<nsIContent> parent = node; nsCOMPtr<nsIContent> topChild = node; nsCOMPtr<nsIAtom> listAtom = NS_Atomize(aListType); while (!CanContainTag(*parent, *listAtom)) { topChild = parent; parent = parent->GetParent(); } if (parent != node) { // we need to split up to the child of parent offset = SplitNodeDeep(*topChild, *node, offset); NS_ENSURE_STATE(offset != -1); } // make a list nsCOMPtr<Element> newList = CreateNode(listAtom, parent, offset); NS_ENSURE_STATE(newList); // make a list item nsCOMPtr<Element> newItem = CreateNode(nsGkAtoms::li, newList, 0); NS_ENSURE_STATE(newItem); rv = selection->Collapse(newItem, 0); NS_ENSURE_SUCCESS(rv, rv); } } return rules->DidDoAction(selection, &ruleInfo, rv); } NS_IMETHODIMP HTMLEditor::RemoveList(const nsAString& aListType) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); bool cancel, handled; AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::removeList, nsIEditor::eNext); // pre-process RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(EditAction::removeList); if (aListType.LowerCaseEqualsLiteral("ol")) { ruleInfo.bOrdered = true; } else { ruleInfo.bOrdered = false; } nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } // no default behavior for this yet. what would it mean? return rules->DidDoAction(selection, &ruleInfo, rv); } nsresult HTMLEditor::MakeDefinitionItem(const nsAString& aItemType) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); bool cancel, handled; AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::makeDefListItem, nsIEditor::eNext); // pre-process RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(EditAction::makeDefListItem); ruleInfo.blockType = &aItemType; nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } if (!handled) { // todo: no default for now. we count on rules to handle it. } return rules->DidDoAction(selection, &ruleInfo, rv); } nsresult HTMLEditor::InsertBasicBlock(const nsAString& aBlockType) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); bool cancel, handled; AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::makeBasicBlock, nsIEditor::eNext); // pre-process RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(EditAction::makeBasicBlock); ruleInfo.blockType = &aBlockType; nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } if (!handled) { // Find out if the selection is collapsed: bool isCollapsed = selection->Collapsed(); NS_ENSURE_TRUE(selection->GetRangeAt(0) && selection->GetRangeAt(0)->GetStartParent() && selection->GetRangeAt(0)->GetStartParent()->IsContent(), NS_ERROR_FAILURE); OwningNonNull<nsIContent> node = *selection->GetRangeAt(0)->GetStartParent()->AsContent(); int32_t offset = selection->GetRangeAt(0)->StartOffset(); if (isCollapsed) { // have to find a place to put the block nsCOMPtr<nsIContent> parent = node; nsCOMPtr<nsIContent> topChild = node; nsCOMPtr<nsIAtom> blockAtom = NS_Atomize(aBlockType); while (!CanContainTag(*parent, *blockAtom)) { NS_ENSURE_TRUE(parent->GetParent(), NS_ERROR_FAILURE); topChild = parent; parent = parent->GetParent(); } if (parent != node) { // we need to split up to the child of parent offset = SplitNodeDeep(*topChild, *node, offset); NS_ENSURE_STATE(offset != -1); } // make a block nsCOMPtr<Element> newBlock = CreateNode(blockAtom, parent, offset); NS_ENSURE_STATE(newBlock); // reposition selection to inside the block rv = selection->Collapse(newBlock, 0); NS_ENSURE_SUCCESS(rv, rv); } } return rules->DidDoAction(selection, &ruleInfo, rv); } NS_IMETHODIMP HTMLEditor::Indent(const nsAString& aIndent) { if (!mRules) { return NS_ERROR_NOT_INITIALIZED; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); bool cancel, handled; EditAction opID = EditAction::indent; if (aIndent.LowerCaseEqualsLiteral("outdent")) { opID = EditAction::outdent; } AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, opID, nsIEditor::eNext); // pre-process RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(opID); nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } if (!handled) { // Do default - insert a blockquote node if selection collapsed bool isCollapsed = selection->Collapsed(); NS_ENSURE_TRUE(selection->GetRangeAt(0) && selection->GetRangeAt(0)->GetStartParent() && selection->GetRangeAt(0)->GetStartParent()->IsContent(), NS_ERROR_FAILURE); OwningNonNull<nsIContent> node = *selection->GetRangeAt(0)->GetStartParent()->AsContent(); int32_t offset = selection->GetRangeAt(0)->StartOffset(); if (aIndent.EqualsLiteral("indent")) { if (isCollapsed) { // have to find a place to put the blockquote nsCOMPtr<nsIContent> parent = node; nsCOMPtr<nsIContent> topChild = node; while (!CanContainTag(*parent, *nsGkAtoms::blockquote)) { NS_ENSURE_TRUE(parent->GetParent(), NS_ERROR_FAILURE); topChild = parent; parent = parent->GetParent(); } if (parent != node) { // we need to split up to the child of parent offset = SplitNodeDeep(*topChild, *node, offset); NS_ENSURE_STATE(offset != -1); } // make a blockquote nsCOMPtr<Element> newBQ = CreateNode(nsGkAtoms::blockquote, parent, offset); NS_ENSURE_STATE(newBQ); // put a space in it so layout will draw the list item rv = selection->Collapse(newBQ, 0); NS_ENSURE_SUCCESS(rv, rv); rv = InsertText(NS_LITERAL_STRING(" ")); NS_ENSURE_SUCCESS(rv, rv); // reposition selection to before the space character NS_ENSURE_STATE(selection->GetRangeAt(0)); rv = selection->Collapse(selection->GetRangeAt(0)->GetStartParent(), 0); NS_ENSURE_SUCCESS(rv, rv); } } } return rules->DidDoAction(selection, &ruleInfo, rv); } //TODO: IMPLEMENT ALIGNMENT! NS_IMETHODIMP HTMLEditor::Align(const nsAString& aAlignType) { // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); AutoEditBatch beginBatching(this); AutoRules beginRulesSniffing(this, EditAction::align, nsIEditor::eNext); bool cancel, handled; // Find out if the selection is collapsed: RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); TextRulesInfo ruleInfo(EditAction::align); ruleInfo.alignType = &aAlignType; nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); if (cancel || NS_FAILED(rv)) { return rv; } return rules->DidDoAction(selection, &ruleInfo, rv); } already_AddRefed<Element> HTMLEditor::GetElementOrParentByTagName(const nsAString& aTagName, nsINode* aNode) { MOZ_ASSERT(!aTagName.IsEmpty()); nsCOMPtr<nsINode> node = aNode; if (!node) { // If no node supplied, get it from anchor node of current selection RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, nullptr); nsCOMPtr<nsINode> anchorNode = selection->GetAnchorNode(); NS_ENSURE_TRUE(anchorNode, nullptr); // Try to get the actual selected node if (anchorNode->HasChildNodes() && anchorNode->IsContent()) { node = anchorNode->GetChildAt(selection->AnchorOffset()); } // Anchor node is probably a text node - just use that if (!node) { node = anchorNode; } } nsCOMPtr<Element> current; if (node->IsElement()) { current = node->AsElement(); } else if (node->GetParentElement()) { current = node->GetParentElement(); } else { // Neither aNode nor its parent is an element, so no ancestor is MOZ_ASSERT(!node->GetParentNode() || !node->GetParentNode()->GetParentNode()); return nullptr; } nsAutoString tagName(aTagName); ToLowerCase(tagName); bool getLink = IsLinkTag(tagName); bool getNamedAnchor = IsNamedAnchorTag(tagName); if (getLink || getNamedAnchor) { tagName.Assign('a'); } bool findTableCell = tagName.EqualsLiteral("td"); bool findList = tagName.EqualsLiteral("list"); for (; current; current = current->GetParentElement()) { // Test if we have a link (an anchor with href set) if ((getLink && HTMLEditUtils::IsLink(current)) || (getNamedAnchor && HTMLEditUtils::IsNamedAnchor(current))) { return current.forget(); } if (findList) { // Match "ol", "ul", or "dl" for lists if (HTMLEditUtils::IsList(current)) { return current.forget(); } } else if (findTableCell) { // Table cells are another special case: match either "td" or "th" if (HTMLEditUtils::IsTableCell(current)) { return current.forget(); } } else if (current->NodeName().Equals(tagName, nsCaseInsensitiveStringComparator())) { return current.forget(); } // Stop searching if parent is a body tag. Note: Originally used IsRoot to // stop at table cells, but that's too messy when you are trying to find // the parent table if (current->GetParentElement() && current->GetParentElement()->IsHTMLElement(nsGkAtoms::body)) { break; } } return nullptr; } NS_IMETHODIMP HTMLEditor::GetElementOrParentByTagName(const nsAString& aTagName, nsIDOMNode* aNode, nsIDOMElement** aReturn) { NS_ENSURE_TRUE(!aTagName.IsEmpty(), NS_ERROR_NULL_POINTER); NS_ENSURE_TRUE(aReturn, NS_ERROR_NULL_POINTER); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); nsCOMPtr<Element> parent = GetElementOrParentByTagName(aTagName, node); nsCOMPtr<nsIDOMElement> ret = do_QueryInterface(parent); if (!ret) { return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND; } ret.forget(aReturn); return NS_OK; } NS_IMETHODIMP HTMLEditor::GetSelectedElement(const nsAString& aTagName, nsIDOMElement** aReturn) { NS_ENSURE_TRUE(aReturn , NS_ERROR_NULL_POINTER); // default is null - no element found *aReturn = nullptr; // First look for a single element in selection RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); bool bNodeFound = false; bool isCollapsed = selection->Collapsed(); nsAutoString domTagName; nsAutoString TagName(aTagName); ToLowerCase(TagName); // Empty string indicates we should match any element tag bool anyTag = (TagName.IsEmpty()); bool isLinkTag = IsLinkTag(TagName); bool isNamedAnchorTag = IsNamedAnchorTag(TagName); nsCOMPtr<nsIDOMElement> selectedElement; RefPtr<nsRange> range = selection->GetRangeAt(0); NS_ENSURE_STATE(range); nsCOMPtr<nsIDOMNode> startParent; int32_t startOffset, endOffset; nsresult rv = range->GetStartContainer(getter_AddRefs(startParent)); NS_ENSURE_SUCCESS(rv, rv); rv = range->GetStartOffset(&startOffset); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<nsIDOMNode> endParent; rv = range->GetEndContainer(getter_AddRefs(endParent)); NS_ENSURE_SUCCESS(rv, rv); rv = range->GetEndOffset(&endOffset); NS_ENSURE_SUCCESS(rv, rv); // Optimization for a single selected element if (startParent && startParent == endParent && endOffset - startOffset == 1) { nsCOMPtr<nsIDOMNode> selectedNode = GetChildAt(startParent, startOffset); NS_ENSURE_SUCCESS(rv, NS_OK); if (selectedNode) { selectedNode->GetNodeName(domTagName); ToLowerCase(domTagName); // Test for appropriate node type requested if (anyTag || (TagName == domTagName) || (isLinkTag && HTMLEditUtils::IsLink(selectedNode)) || (isNamedAnchorTag && HTMLEditUtils::IsNamedAnchor(selectedNode))) { bNodeFound = true; selectedElement = do_QueryInterface(selectedNode); } } } if (!bNodeFound) { if (isLinkTag) { // Link tag is a special case - we return the anchor node // found for any selection that is totally within a link, // included a collapsed selection (just a caret in a link) nsCOMPtr<nsIDOMNode> anchorNode; rv = selection->GetAnchorNode(getter_AddRefs(anchorNode)); NS_ENSURE_SUCCESS(rv, rv); int32_t anchorOffset = -1; if (anchorNode) { selection->GetAnchorOffset(&anchorOffset); } nsCOMPtr<nsIDOMNode> focusNode; rv = selection->GetFocusNode(getter_AddRefs(focusNode)); NS_ENSURE_SUCCESS(rv, rv); int32_t focusOffset = -1; if (focusNode) { selection->GetFocusOffset(&focusOffset); } // Link node must be the same for both ends of selection if (NS_SUCCEEDED(rv) && anchorNode) { nsCOMPtr<nsIDOMElement> parentLinkOfAnchor; rv = GetElementOrParentByTagName(NS_LITERAL_STRING("href"), anchorNode, getter_AddRefs(parentLinkOfAnchor)); // XXX: ERROR_HANDLING can parentLinkOfAnchor be null? if (NS_SUCCEEDED(rv) && parentLinkOfAnchor) { if (isCollapsed) { // We have just a caret in the link bNodeFound = true; } else if (focusNode) { // Link node must be the same for both ends of selection. nsCOMPtr<nsIDOMElement> parentLinkOfFocus; rv = GetElementOrParentByTagName(NS_LITERAL_STRING("href"), focusNode, getter_AddRefs(parentLinkOfFocus)); if (NS_SUCCEEDED(rv) && parentLinkOfFocus == parentLinkOfAnchor) { bNodeFound = true; } } // We found a link node parent if (bNodeFound) { // GetElementOrParentByTagName addref'd this, so we don't need to do it here *aReturn = parentLinkOfAnchor; NS_IF_ADDREF(*aReturn); return NS_OK; } } else if (anchorOffset >= 0) { // Check if link node is the only thing selected nsCOMPtr<nsIDOMNode> anchorChild; anchorChild = GetChildAt(anchorNode,anchorOffset); if (anchorChild && HTMLEditUtils::IsLink(anchorChild) && anchorNode == focusNode && focusOffset == anchorOffset + 1) { selectedElement = do_QueryInterface(anchorChild); bNodeFound = true; } } } } if (!isCollapsed) { RefPtr<nsRange> currange = selection->GetRangeAt(0); if (currange) { nsCOMPtr<nsIContentIterator> iter = do_CreateInstance("@mozilla.org/content/post-content-iterator;1", &rv); NS_ENSURE_SUCCESS(rv, rv); iter->Init(currange); // loop through the content iterator for each content node while (!iter->IsDone()) { // Query interface to cast nsIContent to nsIDOMNode // then get tagType to compare to aTagName // Clone node of each desired type and append it to the aDomFrag selectedElement = do_QueryInterface(iter->GetCurrentNode()); if (selectedElement) { // If we already found a node, then we have another element, // thus there's not just one element selected if (bNodeFound) { bNodeFound = false; break; } selectedElement->GetNodeName(domTagName); ToLowerCase(domTagName); if (anyTag) { // Get name of first selected element selectedElement->GetTagName(TagName); ToLowerCase(TagName); anyTag = false; } // The "A" tag is a pain, // used for both link(href is set) and "Named Anchor" nsCOMPtr<nsIDOMNode> selectedNode = do_QueryInterface(selectedElement); if ((isLinkTag && HTMLEditUtils::IsLink(selectedNode)) || (isNamedAnchorTag && HTMLEditUtils::IsNamedAnchor(selectedNode))) { bNodeFound = true; } else if (TagName == domTagName) { // All other tag names are handled here bNodeFound = true; } if (!bNodeFound) { // Check if node we have is really part of the selection??? break; } } iter->Next(); } } else { // Should never get here? isCollapsed = true; NS_WARNING("isCollapsed was FALSE, but no elements found in selection\n"); } } } if (!bNodeFound) { return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND; } *aReturn = selectedElement; if (selectedElement) { // Getters must addref NS_ADDREF(*aReturn); } return rv; } already_AddRefed<Element> HTMLEditor::CreateElementWithDefaults(const nsAString& aTagName) { MOZ_ASSERT(!aTagName.IsEmpty()); nsAutoString tagName(aTagName); ToLowerCase(tagName); nsAutoString realTagName; if (IsLinkTag(tagName) || IsNamedAnchorTag(tagName)) { realTagName.Assign('a'); } else { realTagName = tagName; } // We don't use editor's CreateElement because we don't want to go through // the transaction system // New call to use instead to get proper HTML element, bug 39919 nsCOMPtr<nsIAtom> realTagAtom = NS_Atomize(realTagName); nsCOMPtr<Element> newElement = CreateHTMLContent(realTagAtom); if (!newElement) { return nullptr; } // Mark the new element dirty, so it will be formatted ErrorResult rv; newElement->SetAttribute(NS_LITERAL_STRING("_moz_dirty"), EmptyString(), rv); // Set default values for new elements if (tagName.EqualsLiteral("table")) { newElement->SetAttribute(NS_LITERAL_STRING("cellpadding"), NS_LITERAL_STRING("2"), rv); if (NS_WARN_IF(rv.Failed())) { rv.SuppressException(); return nullptr; } newElement->SetAttribute(NS_LITERAL_STRING("cellspacing"), NS_LITERAL_STRING("2"), rv); if (NS_WARN_IF(rv.Failed())) { rv.SuppressException(); return nullptr; } newElement->SetAttribute(NS_LITERAL_STRING("border"), NS_LITERAL_STRING("1"), rv); if (NS_WARN_IF(rv.Failed())) { rv.SuppressException(); return nullptr; } } else if (tagName.EqualsLiteral("td")) { nsresult rv = SetAttributeOrEquivalent( static_cast<nsIDOMElement*>(newElement->AsDOMNode()), NS_LITERAL_STRING("valign"), NS_LITERAL_STRING("top"), true); NS_ENSURE_SUCCESS(rv, nullptr); } // ADD OTHER TAGS HERE return newElement.forget(); } NS_IMETHODIMP HTMLEditor::CreateElementWithDefaults(const nsAString& aTagName, nsIDOMElement** aReturn) { NS_ENSURE_TRUE(!aTagName.IsEmpty() && aReturn, NS_ERROR_NULL_POINTER); *aReturn = nullptr; nsCOMPtr<Element> newElement = CreateElementWithDefaults(aTagName); nsCOMPtr<nsIDOMElement> ret = do_QueryInterface(newElement); NS_ENSURE_TRUE(ret, NS_ERROR_FAILURE); ret.forget(aReturn); return NS_OK; } NS_IMETHODIMP HTMLEditor::InsertLinkAroundSelection(nsIDOMElement* aAnchorElement) { NS_ENSURE_TRUE(aAnchorElement, NS_ERROR_NULL_POINTER); // We must have a real selection RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); if (selection->Collapsed()) { NS_WARNING("InsertLinkAroundSelection called but there is no selection!!!"); return NS_OK; } // Be sure we were given an anchor element nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aAnchorElement); if (!anchor) { return NS_OK; } nsAutoString href; nsresult rv = anchor->GetHref(href); NS_ENSURE_SUCCESS(rv, rv); if (href.IsEmpty()) { return NS_OK; } AutoEditBatch beginBatching(this); // Set all attributes found on the supplied anchor element nsCOMPtr<nsIDOMMozNamedAttrMap> attrMap; aAnchorElement->GetAttributes(getter_AddRefs(attrMap)); NS_ENSURE_TRUE(attrMap, NS_ERROR_FAILURE); uint32_t count; attrMap->GetLength(&count); nsAutoString name, value; for (uint32_t i = 0; i < count; ++i) { nsCOMPtr<nsIDOMAttr> attribute; rv = attrMap->Item(i, getter_AddRefs(attribute)); NS_ENSURE_SUCCESS(rv, rv); if (attribute) { // We must clear the string buffers // because GetName, GetValue appends to previous string! name.Truncate(); value.Truncate(); rv = attribute->GetName(name); NS_ENSURE_SUCCESS(rv, rv); rv = attribute->GetValue(value); NS_ENSURE_SUCCESS(rv, rv); rv = SetInlineProperty(nsGkAtoms::a, name, value); NS_ENSURE_SUCCESS(rv, rv); } } return NS_OK; } nsresult HTMLEditor::SetHTMLBackgroundColor(const nsAString& aColor) { NS_PRECONDITION(mDocWeak, "Missing Editor DOM Document"); // Find a selected or enclosing table element to set background on nsCOMPtr<nsIDOMElement> element; int32_t selectedCount; nsAutoString tagName; nsresult rv = GetSelectedOrParentTableElement(tagName, &selectedCount, getter_AddRefs(element)); NS_ENSURE_SUCCESS(rv, rv); bool setColor = !aColor.IsEmpty(); NS_NAMED_LITERAL_STRING(bgcolor, "bgcolor"); if (element) { if (selectedCount > 0) { // Traverse all selected cells nsCOMPtr<nsIDOMElement> cell; rv = GetFirstSelectedCell(nullptr, getter_AddRefs(cell)); if (NS_SUCCEEDED(rv) && cell) { while (cell) { rv = setColor ? SetAttribute(cell, bgcolor, aColor) : RemoveAttribute(cell, bgcolor); if (NS_FAILED(rv)) { return rv; } GetNextSelectedCell(nullptr, getter_AddRefs(cell)); } return NS_OK; } } // If we failed to find a cell, fall through to use originally-found element } else { // No table element -- set the background color on the body tag element = do_QueryInterface(GetRoot()); NS_ENSURE_TRUE(element, NS_ERROR_NULL_POINTER); } // Use the editor method that goes through the transaction system return setColor ? SetAttribute(element, bgcolor, aColor) : RemoveAttribute(element, bgcolor); } NS_IMETHODIMP HTMLEditor::SetBodyAttribute(const nsAString& aAttribute, const nsAString& aValue) { // TODO: Check selection for Cell, Row, Column or table and do color on appropriate level NS_ASSERTION(mDocWeak, "Missing Editor DOM Document"); // Set the background color attribute on the body tag nsCOMPtr<nsIDOMElement> bodyElement = do_QueryInterface(GetRoot()); NS_ENSURE_TRUE(bodyElement, NS_ERROR_NULL_POINTER); // Use the editor method that goes through the transaction system return SetAttribute(bodyElement, aAttribute, aValue); } NS_IMETHODIMP HTMLEditor::GetLinkedObjects(nsIArray** aNodeList) { NS_ENSURE_TRUE(aNodeList, NS_ERROR_NULL_POINTER); nsresult rv; nsCOMPtr<nsIMutableArray> nodes = do_CreateInstance(NS_ARRAY_CONTRACTID, &rv); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsCOMPtr<nsIContentIterator> iter = do_CreateInstance("@mozilla.org/content/post-content-iterator;1", &rv); NS_ENSURE_TRUE(iter, NS_ERROR_NULL_POINTER); if (NS_SUCCEEDED(rv)) { nsCOMPtr<nsIDocument> doc = GetDocument(); NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED); iter->Init(doc->GetRootElement()); // loop through the content iterator for each content node while (!iter->IsDone()) { nsCOMPtr<nsIDOMNode> node (do_QueryInterface(iter->GetCurrentNode())); if (node) { // Let nsURIRefObject make the hard decisions: nsCOMPtr<nsIURIRefObject> refObject; rv = NS_NewHTMLURIRefObject(getter_AddRefs(refObject), node); if (NS_SUCCEEDED(rv)) { nodes->AppendElement(refObject, false); } } iter->Next(); } } nodes.forget(aNodeList); return NS_OK; } NS_IMETHODIMP HTMLEditor::AddStyleSheet(const nsAString& aURL) { // Enable existing sheet if already loaded. if (EnableExistingStyleSheet(aURL)) { return NS_OK; } // Lose the previously-loaded sheet so there's nothing to replace // This pattern is different from Override methods because // we must wait to remove mLastStyleSheetURL and add new sheet // at the same time (in StyleSheetLoaded callback) so they are undoable together mLastStyleSheetURL.Truncate(); return ReplaceStyleSheet(aURL); } NS_IMETHODIMP HTMLEditor::ReplaceStyleSheet(const nsAString& aURL) { // Enable existing sheet if already loaded. if (EnableExistingStyleSheet(aURL)) { // Disable last sheet if not the same as new one if (!mLastStyleSheetURL.IsEmpty() && !mLastStyleSheetURL.Equals(aURL)) { return EnableStyleSheet(mLastStyleSheetURL, false); } return NS_OK; } // Make sure the pres shell doesn't disappear during the load. NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIPresShell> ps = GetPresShell(); NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIURI> uaURI; nsresult rv = NS_NewURI(getter_AddRefs(uaURI), aURL); NS_ENSURE_SUCCESS(rv, rv); return ps->GetDocument()->CSSLoader()-> LoadSheet(uaURI, false, nullptr, EmptyCString(), this); } NS_IMETHODIMP HTMLEditor::RemoveStyleSheet(const nsAString& aURL) { RefPtr<StyleSheet> sheet = GetStyleSheetForURL(aURL); NS_ENSURE_TRUE(sheet, NS_ERROR_UNEXPECTED); RefPtr<RemoveStyleSheetTransaction> transaction; nsresult rv = CreateTxnForRemoveStyleSheet(sheet, getter_AddRefs(transaction)); if (!transaction) { rv = NS_ERROR_NULL_POINTER; } if (NS_SUCCEEDED(rv)) { rv = DoTransaction(transaction); if (NS_SUCCEEDED(rv)) { mLastStyleSheetURL.Truncate(); // forget it } // Remove it from our internal list rv = RemoveStyleSheetFromList(aURL); } return rv; } NS_IMETHODIMP HTMLEditor::AddOverrideStyleSheet(const nsAString& aURL) { // Enable existing sheet if already loaded. if (EnableExistingStyleSheet(aURL)) { return NS_OK; } // Make sure the pres shell doesn't disappear during the load. nsCOMPtr<nsIPresShell> ps = GetPresShell(); NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIURI> uaURI; nsresult rv = NS_NewURI(getter_AddRefs(uaURI), aURL); NS_ENSURE_SUCCESS(rv, rv); // We MUST ONLY load synchronous local files (no @import) // XXXbz Except this will actually try to load remote files // synchronously, of course.. RefPtr<StyleSheet> sheet; // Editor override style sheets may want to style Gecko anonymous boxes rv = ps->GetDocument()->CSSLoader()-> LoadSheetSync(uaURI, mozilla::css::eAgentSheetFeatures, true, &sheet); // Synchronous loads should ALWAYS return completed NS_ENSURE_TRUE(sheet, NS_ERROR_NULL_POINTER); // Add the override style sheet // (This checks if already exists) ps->AddOverrideStyleSheet(sheet); ps->RestyleForCSSRuleChanges(); // Save as the last-loaded sheet mLastOverrideStyleSheetURL = aURL; //Add URL and style sheet to our lists return AddNewStyleSheetToList(aURL, sheet); } NS_IMETHODIMP HTMLEditor::ReplaceOverrideStyleSheet(const nsAString& aURL) { // Enable existing sheet if already loaded. if (EnableExistingStyleSheet(aURL)) { // Disable last sheet if not the same as new one if (!mLastOverrideStyleSheetURL.IsEmpty() && !mLastOverrideStyleSheetURL.Equals(aURL)) { return EnableStyleSheet(mLastOverrideStyleSheetURL, false); } return NS_OK; } // Remove the previous sheet if (!mLastOverrideStyleSheetURL.IsEmpty()) { RemoveOverrideStyleSheet(mLastOverrideStyleSheetURL); } return AddOverrideStyleSheet(aURL); } // Do NOT use transaction system for override style sheets NS_IMETHODIMP HTMLEditor::RemoveOverrideStyleSheet(const nsAString& aURL) { RefPtr<StyleSheet> sheet = GetStyleSheetForURL(aURL); // Make sure we remove the stylesheet from our internal list in all // cases. nsresult rv = RemoveStyleSheetFromList(aURL); NS_ENSURE_TRUE(sheet, NS_OK); /// Don't fail if sheet not found NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIPresShell> ps = GetPresShell(); NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED); ps->RemoveOverrideStyleSheet(sheet); ps->RestyleForCSSRuleChanges(); // Remove it from our internal list return rv; } NS_IMETHODIMP HTMLEditor::EnableStyleSheet(const nsAString& aURL, bool aEnable) { RefPtr<StyleSheet> sheet = GetStyleSheetForURL(aURL); NS_ENSURE_TRUE(sheet, NS_OK); // Don't fail if sheet not found // Ensure the style sheet is owned by our document. nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); sheet->SetOwningDocument(doc); if (sheet->IsServo()) { // XXXheycam ServoStyleSheets don't support being enabled/disabled yet. NS_ERROR("stylo: ServoStyleSheets can't be disabled yet"); return NS_ERROR_FAILURE; } return sheet->AsGecko()->SetDisabled(!aEnable); } bool HTMLEditor::EnableExistingStyleSheet(const nsAString& aURL) { RefPtr<StyleSheet> sheet = GetStyleSheetForURL(aURL); // Enable sheet if already loaded. if (!sheet) { return false; } // Ensure the style sheet is owned by our document. nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); sheet->SetOwningDocument(doc); if (sheet->IsServo()) { // XXXheycam ServoStyleSheets don't support being enabled/disabled yet. NS_ERROR("stylo: ServoStyleSheets can't be disabled yet"); return true; } sheet->AsGecko()->SetDisabled(false); return true; } nsresult HTMLEditor::AddNewStyleSheetToList(const nsAString& aURL, StyleSheet* aStyleSheet) { uint32_t countSS = mStyleSheets.Length(); uint32_t countU = mStyleSheetURLs.Length(); if (countSS != countU) { return NS_ERROR_UNEXPECTED; } if (!mStyleSheetURLs.AppendElement(aURL)) { return NS_ERROR_UNEXPECTED; } return mStyleSheets.AppendElement(aStyleSheet) ? NS_OK : NS_ERROR_UNEXPECTED; } nsresult HTMLEditor::RemoveStyleSheetFromList(const nsAString& aURL) { // is it already in the list? size_t foundIndex; foundIndex = mStyleSheetURLs.IndexOf(aURL); if (foundIndex == mStyleSheetURLs.NoIndex) { return NS_ERROR_FAILURE; } // Attempt both removals; if one fails there's not much we can do. mStyleSheets.RemoveElementAt(foundIndex); mStyleSheetURLs.RemoveElementAt(foundIndex); return NS_OK; } StyleSheet* HTMLEditor::GetStyleSheetForURL(const nsAString& aURL) { // is it already in the list? size_t foundIndex; foundIndex = mStyleSheetURLs.IndexOf(aURL); if (foundIndex == mStyleSheetURLs.NoIndex) { return nullptr; } MOZ_ASSERT(mStyleSheets[foundIndex]); return mStyleSheets[foundIndex]; } void HTMLEditor::GetURLForStyleSheet(StyleSheet* aStyleSheet, nsAString& aURL) { // is it already in the list? int32_t foundIndex = mStyleSheets.IndexOf(aStyleSheet); // Don't fail if we don't find it in our list if (foundIndex == -1) { return; } // Found it in the list! aURL = mStyleSheetURLs[foundIndex]; } NS_IMETHODIMP HTMLEditor::GetEmbeddedObjects(nsIArray** aNodeList) { NS_ENSURE_TRUE(aNodeList, NS_ERROR_NULL_POINTER); nsresult rv; nsCOMPtr<nsIMutableArray> nodes = do_CreateInstance(NS_ARRAY_CONTRACTID, &rv); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<nsIContentIterator> iter = do_CreateInstance("@mozilla.org/content/post-content-iterator;1", &rv); NS_ENSURE_TRUE(iter, NS_ERROR_NULL_POINTER); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<nsIDocument> doc = GetDocument(); NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED); iter->Init(doc->GetRootElement()); // Loop through the content iterator for each content node. while (!iter->IsDone()) { nsINode* node = iter->GetCurrentNode(); if (node->IsElement()) { dom::Element* element = node->AsElement(); // See if it's an image or an embed and also include all links. // Let mail decide which link to send or not if (element->IsAnyOfHTMLElements(nsGkAtoms::img, nsGkAtoms::embed, nsGkAtoms::a) || (element->IsHTMLElement(nsGkAtoms::body) && element->HasAttr(kNameSpaceID_None, nsGkAtoms::background))) { nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(node); nodes->AppendElement(domNode, false); } } iter->Next(); } nodes.forget(aNodeList); return rv; } NS_IMETHODIMP HTMLEditor::DeleteSelectionImpl(EDirection aAction, EStripWrappers aStripWrappers) { MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip); nsresult rv = EditorBase::DeleteSelectionImpl(aAction, aStripWrappers); NS_ENSURE_SUCCESS(rv, rv); // If we weren't asked to strip any wrappers, we're done. if (aStripWrappers == eNoStrip) { return NS_OK; } RefPtr<Selection> selection = GetSelection(); // Just checking that the selection itself is collapsed doesn't seem to work // right in the multi-range case NS_ENSURE_STATE(selection); NS_ENSURE_STATE(selection->GetAnchorFocusRange()); NS_ENSURE_STATE(selection->GetAnchorFocusRange()->Collapsed()); NS_ENSURE_STATE(selection->GetAnchorNode()->IsContent()); nsCOMPtr<nsIContent> content = selection->GetAnchorNode()->AsContent(); // Don't strip wrappers if this is the only wrapper in the block. Then we'll // add a <br> later, so it won't be an empty wrapper in the end. nsCOMPtr<nsIContent> blockParent = content; while (blockParent && !IsBlockNode(blockParent)) { blockParent = blockParent->GetParent(); } if (!blockParent) { return NS_OK; } bool emptyBlockParent; rv = IsEmptyNode(blockParent, &emptyBlockParent); NS_ENSURE_SUCCESS(rv, rv); if (emptyBlockParent) { return NS_OK; } if (content && !IsBlockNode(content) && !content->Length() && content->IsEditable() && content != content->GetEditingHost()) { while (content->GetParent() && !IsBlockNode(content->GetParent()) && content->GetParent()->Length() == 1 && content->GetParent()->IsEditable() && content->GetParent() != content->GetEditingHost()) { content = content->GetParent(); } rv = DeleteNode(content); NS_ENSURE_SUCCESS(rv, rv); } return NS_OK; } nsresult HTMLEditor::DeleteNode(nsINode* aNode) { nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aNode); return DeleteNode(node); } NS_IMETHODIMP HTMLEditor::DeleteNode(nsIDOMNode* aNode) { // do nothing if the node is read-only nsCOMPtr<nsIContent> content = do_QueryInterface(aNode); if (!IsModifiableNode(aNode) && !IsMozEditorBogusNode(content)) { return NS_ERROR_FAILURE; } return EditorBase::DeleteNode(aNode); } nsresult HTMLEditor::DeleteText(nsGenericDOMDataNode& aCharData, uint32_t aOffset, uint32_t aLength) { // Do nothing if the node is read-only if (!IsModifiableNode(&aCharData)) { return NS_ERROR_FAILURE; } return EditorBase::DeleteText(aCharData, aOffset, aLength); } nsresult HTMLEditor::InsertTextImpl(const nsAString& aStringToInsert, nsCOMPtr<nsINode>* aInOutNode, int32_t* aInOutOffset, nsIDocument* aDoc) { // Do nothing if the node is read-only if (!IsModifiableNode(*aInOutNode)) { return NS_ERROR_FAILURE; } return EditorBase::InsertTextImpl(aStringToInsert, aInOutNode, aInOutOffset, aDoc); } void HTMLEditor::ContentAppended(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aFirstNewContent, int32_t aIndexInContainer) { DoContentInserted(aDocument, aContainer, aFirstNewContent, aIndexInContainer, eAppended); } void HTMLEditor::ContentInserted(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild, int32_t aIndexInContainer) { DoContentInserted(aDocument, aContainer, aChild, aIndexInContainer, eInserted); } bool HTMLEditor::IsInObservedSubtree(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild) { if (!aChild) { return false; } Element* root = GetRoot(); // To be super safe here, check both ChromeOnlyAccess and GetBindingParent. // That catches (also unbound) native anonymous content, XBL and ShadowDOM. if (root && (root->ChromeOnlyAccess() != aChild->ChromeOnlyAccess() || root->GetBindingParent() != aChild->GetBindingParent())) { return false; } return !aChild->ChromeOnlyAccess() && !aChild->GetBindingParent(); } void HTMLEditor::DoContentInserted(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild, int32_t aIndexInContainer, InsertedOrAppended aInsertedOrAppended) { if (!IsInObservedSubtree(aDocument, aContainer, aChild)) { return; } nsCOMPtr<nsIHTMLEditor> kungFuDeathGrip(this); if (ShouldReplaceRootElement()) { UpdateRootElement(); nsContentUtils::AddScriptRunner(NewRunnableMethod( this, &HTMLEditor::NotifyRootChanged)); } // We don't need to handle our own modifications else if (!mAction && (aContainer ? aContainer->IsEditable() : aDocument->IsEditable())) { if (IsMozEditorBogusNode(aChild)) { // Ignore insertion of the bogus node return; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); rules->DocumentModified(); // Update spellcheck for only the newly-inserted node (bug 743819) if (mInlineSpellChecker) { RefPtr<nsRange> range = new nsRange(aChild); int32_t endIndex = aIndexInContainer + 1; if (aInsertedOrAppended == eAppended) { // Count all the appended nodes nsIContent* sibling = aChild->GetNextSibling(); while (sibling) { endIndex++; sibling = sibling->GetNextSibling(); } } nsresult rv = range->Set(aContainer, aIndexInContainer, aContainer, endIndex); if (NS_SUCCEEDED(rv)) { mInlineSpellChecker->SpellCheckRange(range); } } } } void HTMLEditor::ContentRemoved(nsIDocument* aDocument, nsIContent* aContainer, nsIContent* aChild, int32_t aIndexInContainer, nsIContent* aPreviousSibling) { if (!IsInObservedSubtree(aDocument, aContainer, aChild)) { return; } nsCOMPtr<nsIHTMLEditor> kungFuDeathGrip(this); if (SameCOMIdentity(aChild, mRootElement)) { mRootElement = nullptr; nsContentUtils::AddScriptRunner(NewRunnableMethod( this, &HTMLEditor::NotifyRootChanged)); } // We don't need to handle our own modifications else if (!mAction && (aContainer ? aContainer->IsEditable() : aDocument->IsEditable())) { if (aChild && IsMozEditorBogusNode(aChild)) { // Ignore removal of the bogus node return; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); rules->DocumentModified(); } } NS_IMETHODIMP_(bool) HTMLEditor::IsModifiableNode(nsIDOMNode* aNode) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); return IsModifiableNode(node); } bool HTMLEditor::IsModifiableNode(nsINode* aNode) { return !aNode || aNode->IsEditable(); } NS_IMETHODIMP HTMLEditor::GetIsSelectionEditable(bool* aIsSelectionEditable) { MOZ_ASSERT(aIsSelectionEditable); RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); // Per the editing spec as of June 2012: we have to have a selection whose // start and end nodes are editable, and which share an ancestor editing // host. (Bug 766387.) *aIsSelectionEditable = selection->RangeCount() && selection->GetAnchorNode()->IsEditable() && selection->GetFocusNode()->IsEditable(); if (*aIsSelectionEditable) { nsINode* commonAncestor = selection->GetAnchorFocusRange()->GetCommonAncestor(); while (commonAncestor && !commonAncestor->IsEditable()) { commonAncestor = commonAncestor->GetParentNode(); } if (!commonAncestor) { // No editable common ancestor *aIsSelectionEditable = false; } } return NS_OK; } static nsresult SetSelectionAroundHeadChildren(Selection* aSelection, nsIWeakReference* aDocWeak) { // Set selection around <head> node nsCOMPtr<nsIDocument> doc = do_QueryReferent(aDocWeak); NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED); dom::Element* headNode = doc->GetHeadElement(); NS_ENSURE_STATE(headNode); // Collapse selection to before first child of the head, nsresult rv = aSelection->CollapseNative(headNode, 0); NS_ENSURE_SUCCESS(rv, rv); // Then extend it to just after. uint32_t childCount = headNode->GetChildCount(); return aSelection->ExtendNative(headNode, childCount + 1); } NS_IMETHODIMP HTMLEditor::GetHeadContentsAsHTML(nsAString& aOutputString) { RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); // Save current selection AutoSelectionRestorer selectionRestorer(selection, this); nsresult rv = SetSelectionAroundHeadChildren(selection, mDocWeak); NS_ENSURE_SUCCESS(rv, rv); rv = OutputToString(NS_LITERAL_STRING("text/html"), nsIDocumentEncoder::OutputSelectionOnly, aOutputString); if (NS_FAILED(rv)) { return rv; } // Selection always includes <body></body>, // so terminate there nsReadingIterator<char16_t> findIter,endFindIter; aOutputString.BeginReading(findIter); aOutputString.EndReading(endFindIter); //counting on our parser to always lower case!!! if (CaseInsensitiveFindInReadable(NS_LITERAL_STRING("<body"), findIter, endFindIter)) { nsReadingIterator<char16_t> beginIter; aOutputString.BeginReading(beginIter); int32_t offset = Distance(beginIter, findIter);//get the distance nsWritingIterator<char16_t> writeIter; aOutputString.BeginWriting(writeIter); // Ensure the string ends in a newline char16_t newline ('\n'); findIter.advance(-1); if (!offset || (offset > 0 && (*findIter) != newline)) { writeIter.advance(offset); *writeIter = newline; aOutputString.Truncate(offset+1); } } return NS_OK; } NS_IMETHODIMP HTMLEditor::DebugUnitTests(int32_t* outNumTests, int32_t* outNumTestsFailed) { #ifdef DEBUG NS_ENSURE_TRUE(outNumTests && outNumTestsFailed, NS_ERROR_NULL_POINTER); TextEditorTest *tester = new TextEditorTest(); NS_ENSURE_TRUE(tester, NS_ERROR_OUT_OF_MEMORY); tester->Run(this, outNumTests, outNumTestsFailed); delete tester; return NS_OK; #else return NS_ERROR_NOT_IMPLEMENTED; #endif } NS_IMETHODIMP HTMLEditor::StyleSheetLoaded(StyleSheet* aSheet, bool aWasAlternate, nsresult aStatus) { nsresult rv = NS_OK; AutoEditBatch batchIt(this); if (!mLastStyleSheetURL.IsEmpty()) RemoveStyleSheet(mLastStyleSheetURL); RefPtr<AddStyleSheetTransaction> transaction; rv = CreateTxnForAddStyleSheet(aSheet, getter_AddRefs(transaction)); if (!transaction) { rv = NS_ERROR_NULL_POINTER; } if (NS_SUCCEEDED(rv)) { rv = DoTransaction(transaction); if (NS_SUCCEEDED(rv)) { // Get the URI, then url spec from the sheet nsAutoCString spec; rv = aSheet->GetSheetURI()->GetSpec(spec); if (NS_SUCCEEDED(rv)) { // Save it so we can remove before applying the next one mLastStyleSheetURL.AssignWithConversion(spec.get()); // Also save in our arrays of urls and sheets AddNewStyleSheetToList(mLastStyleSheetURL, aSheet); } } } return NS_OK; } /** * All editor operations which alter the doc should be prefaced * with a call to StartOperation, naming the action and direction. */ NS_IMETHODIMP HTMLEditor::StartOperation(EditAction opID, nsIEditor::EDirection aDirection) { // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); EditorBase::StartOperation(opID, aDirection); // will set mAction, mDirection if (rules) { return rules->BeforeEdit(mAction, mDirection); } return NS_OK; } /** * All editor operations which alter the doc should be followed * with a call to EndOperation. */ NS_IMETHODIMP HTMLEditor::EndOperation() { // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); // post processing nsresult rv = rules ? rules->AfterEdit(mAction, mDirection) : NS_OK; EditorBase::EndOperation(); // will clear mAction, mDirection return rv; } bool HTMLEditor::TagCanContainTag(nsIAtom& aParentTag, nsIAtom& aChildTag) { nsIParserService* parserService = nsContentUtils::GetParserService(); int32_t childTagEnum; // XXX Should this handle #cdata-section too? if (&aChildTag == nsGkAtoms::textTagName) { childTagEnum = eHTMLTag_text; } else { childTagEnum = parserService->HTMLAtomTagToId(&aChildTag); } int32_t parentTagEnum = parserService->HTMLAtomTagToId(&aParentTag); return HTMLEditUtils::CanContain(parentTagEnum, childTagEnum); } bool HTMLEditor::IsContainer(nsINode* aNode) { MOZ_ASSERT(aNode); int32_t tagEnum; // XXX Should this handle #cdata-section too? if (aNode->IsNodeOfType(nsINode::eTEXT)) { tagEnum = eHTMLTag_text; } else { tagEnum = nsContentUtils::GetParserService()->HTMLStringTagToId(aNode->NodeName()); } return HTMLEditUtils::IsContainer(tagEnum); } bool HTMLEditor::IsContainer(nsIDOMNode* aNode) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); if (!node) { return false; } return IsContainer(node); } nsresult HTMLEditor::SelectEntireDocument(Selection* aSelection) { if (!aSelection || !mRules) { return NS_ERROR_NULL_POINTER; } // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); // get editor root node nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(GetRoot()); // is doc empty? bool bDocIsEmpty; nsresult rv = rules->DocumentIsEmpty(&bDocIsEmpty); NS_ENSURE_SUCCESS(rv, rv); if (bDocIsEmpty) { // if its empty dont select entire doc - that would select the bogus node return aSelection->Collapse(rootElement, 0); } return EditorBase::SelectEntireDocument(aSelection); } NS_IMETHODIMP HTMLEditor::SelectAll() { ForceCompositionEnd(); RefPtr<Selection> selection = GetSelection(); NS_ENSURE_STATE(selection); nsCOMPtr<nsIDOMNode> anchorNode; nsresult rv = selection->GetAnchorNode(getter_AddRefs(anchorNode)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr<nsIContent> anchorContent = do_QueryInterface(anchorNode, &rv); NS_ENSURE_SUCCESS(rv, rv); nsIContent *rootContent; if (anchorContent->HasIndependentSelection()) { rv = selection->SetAncestorLimiter(nullptr); NS_ENSURE_SUCCESS(rv, rv); rootContent = mRootElement; } else { nsCOMPtr<nsIPresShell> ps = GetPresShell(); rootContent = anchorContent->GetSelectionRootContent(ps); } NS_ENSURE_TRUE(rootContent, NS_ERROR_UNEXPECTED); nsCOMPtr<nsIDOMNode> rootElement = do_QueryInterface(rootContent, &rv); NS_ENSURE_SUCCESS(rv, rv); Maybe<mozilla::dom::Selection::AutoUserInitiated> userSelection; if (!rootContent->IsEditable()) { userSelection.emplace(selection); } return selection->SelectAllChildren(rootElement); } // this will NOT find aAttribute unless aAttribute has a non-null value // so singleton attributes like <Table border> will not be matched! bool HTMLEditor::IsTextPropertySetByContent(nsINode* aNode, nsIAtom* aProperty, const nsAString* aAttribute, const nsAString* aValue, nsAString* outValue) { MOZ_ASSERT(aNode && aProperty); bool isSet; IsTextPropertySetByContent(aNode->AsDOMNode(), aProperty, aAttribute, aValue, isSet, outValue); return isSet; } void HTMLEditor::IsTextPropertySetByContent(nsIDOMNode* aNode, nsIAtom* aProperty, const nsAString* aAttribute, const nsAString* aValue, bool& aIsSet, nsAString* outValue) { aIsSet = false; // must be initialized to false for code below to work nsAutoString propName; aProperty->ToString(propName); nsCOMPtr<nsIDOMNode>node = aNode; while (node) { nsCOMPtr<nsIDOMElement>element; element = do_QueryInterface(node); if (element) { nsAutoString tag, value; element->GetTagName(tag); if (propName.Equals(tag, nsCaseInsensitiveStringComparator())) { bool found = false; if (aAttribute && !aAttribute->IsEmpty()) { element->GetAttribute(*aAttribute, value); if (outValue) { *outValue = value; } if (!value.IsEmpty()) { if (!aValue) { found = true; } else { nsString tString(*aValue); if (tString.Equals(value, nsCaseInsensitiveStringComparator())) { found = true; } else { // We found the prop with the attribute, but the value doesn't // match. break; } } } } else { found = true; } if (found) { aIsSet = true; break; } } } nsCOMPtr<nsIDOMNode>temp; if (NS_SUCCEEDED(node->GetParentNode(getter_AddRefs(temp))) && temp) { node = temp; } else { node = nullptr; } } } bool HTMLEditor::SetCaretInTableCell(nsIDOMElement* aElement) { nsCOMPtr<dom::Element> element = do_QueryInterface(aElement); if (!element || !element->IsHTMLElement() || !HTMLEditUtils::IsTableElement(element) || !IsDescendantOfEditorRoot(element)) { return false; } nsIContent* node = element; while (node->HasChildren()) { node = node->GetFirstChild(); } // Set selection at beginning of the found node RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, false); return NS_SUCCEEDED(selection->CollapseNative(node, 0)); } /** * GetEnclosingTable() finds ancestor who is a table, if any. */ Element* HTMLEditor::GetEnclosingTable(nsINode* aNode) { MOZ_ASSERT(aNode); for (nsCOMPtr<Element> block = GetBlockNodeParent(aNode); block; block = GetBlockNodeParent(block)) { if (HTMLEditUtils::IsTable(block)) { return block; } } return nullptr; } nsIDOMNode* HTMLEditor::GetEnclosingTable(nsIDOMNode* aNode) { NS_PRECONDITION(aNode, "null node passed to HTMLEditor::GetEnclosingTable"); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, nullptr); nsCOMPtr<Element> table = GetEnclosingTable(node); nsCOMPtr<nsIDOMNode> ret = do_QueryInterface(table); return ret; } /** * This method scans the selection for adjacent text nodes * and collapses them into a single text node. * "adjacent" means literally adjacent siblings of the same parent. * Uses EditorBase::JoinNodes so action is undoable. * Should be called within the context of a batch transaction. */ nsresult HTMLEditor::CollapseAdjacentTextNodes(nsRange* aInRange) { NS_ENSURE_TRUE(aInRange, NS_ERROR_NULL_POINTER); AutoTransactionsConserveSelection dontSpazMySelection(this); nsTArray<nsCOMPtr<nsIDOMNode> > textNodes; // we can't actually do anything during iteration, so store the text nodes in an array // don't bother ref counting them because we know we can hold them for the // lifetime of this method // build a list of editable text nodes nsresult rv = NS_ERROR_UNEXPECTED; nsCOMPtr<nsIContentIterator> iter = do_CreateInstance("@mozilla.org/content/subtree-content-iterator;1", &rv); NS_ENSURE_SUCCESS(rv, rv); iter->Init(aInRange); while (!iter->IsDone()) { nsINode* node = iter->GetCurrentNode(); if (node->NodeType() == nsIDOMNode::TEXT_NODE && IsEditable(static_cast<nsIContent*>(node))) { nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(node); textNodes.AppendElement(domNode); } iter->Next(); } // now that I have a list of text nodes, collapse adjacent text nodes // NOTE: assumption that JoinNodes keeps the righthand node while (textNodes.Length() > 1) { // we assume a textNodes entry can't be nullptr nsIDOMNode *leftTextNode = textNodes[0]; nsIDOMNode *rightTextNode = textNodes[1]; NS_ASSERTION(leftTextNode && rightTextNode,"left or rightTextNode null in CollapseAdjacentTextNodes"); // get the prev sibling of the right node, and see if its leftTextNode nsCOMPtr<nsIDOMNode> prevSibOfRightNode; rv = rightTextNode->GetPreviousSibling(getter_AddRefs(prevSibOfRightNode)); NS_ENSURE_SUCCESS(rv, rv); if (prevSibOfRightNode && prevSibOfRightNode == leftTextNode) { nsCOMPtr<nsIDOMNode> parent; rv = rightTextNode->GetParentNode(getter_AddRefs(parent)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); rv = JoinNodes(leftTextNode, rightTextNode, parent); NS_ENSURE_SUCCESS(rv, rv); } textNodes.RemoveElementAt(0); // remove the leftmost text node from the list } return NS_OK; } nsresult HTMLEditor::SetSelectionAtDocumentStart(Selection* aSelection) { dom::Element* rootElement = GetRoot(); NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER); return aSelection->CollapseNative(rootElement, 0); } /** * Remove aNode, reparenting any children into the parent of aNode. In * addition, insert any br's needed to preserve identity of removed block. */ nsresult HTMLEditor::RemoveBlockContainer(nsIContent& aNode) { // Two possibilities: the container could be empty of editable content. If // that is the case, we need to compare what is before and after aNode to // determine if we need a br. // // Or it could be not empty, in which case we have to compare previous // sibling and first child to determine if we need a leading br, and compare // following sibling and last child to determine if we need a trailing br. nsCOMPtr<nsIContent> child = GetFirstEditableChild(aNode); if (child) { // The case of aNode not being empty. We need a br at start unless: // 1) previous sibling of aNode is a block, OR // 2) previous sibling of aNode is a br, OR // 3) first child of aNode is a block OR // 4) either is null nsCOMPtr<nsIContent> sibling = GetPriorHTMLSibling(&aNode); if (sibling && !IsBlockNode(sibling) && !sibling->IsHTMLElement(nsGkAtoms::br) && !IsBlockNode(child)) { // Insert br node nsCOMPtr<Element> br = CreateBR(&aNode, 0); NS_ENSURE_STATE(br); } // We need a br at end unless: // 1) following sibling of aNode is a block, OR // 2) last child of aNode is a block, OR // 3) last child of aNode is a br OR // 4) either is null sibling = GetNextHTMLSibling(&aNode); if (sibling && !IsBlockNode(sibling)) { child = GetLastEditableChild(aNode); MOZ_ASSERT(child, "aNode has first editable child but not last?"); if (!IsBlockNode(child) && !child->IsHTMLElement(nsGkAtoms::br)) { // Insert br node nsCOMPtr<Element> br = CreateBR(&aNode, aNode.Length()); NS_ENSURE_STATE(br); } } } else { // The case of aNode being empty. We need a br at start unless: // 1) previous sibling of aNode is a block, OR // 2) previous sibling of aNode is a br, OR // 3) following sibling of aNode is a block, OR // 4) following sibling of aNode is a br OR // 5) either is null nsCOMPtr<nsIContent> sibling = GetPriorHTMLSibling(&aNode); if (sibling && !IsBlockNode(sibling) && !sibling->IsHTMLElement(nsGkAtoms::br)) { sibling = GetNextHTMLSibling(&aNode); if (sibling && !IsBlockNode(sibling) && !sibling->IsHTMLElement(nsGkAtoms::br)) { // Insert br node nsCOMPtr<Element> br = CreateBR(&aNode, 0); NS_ENSURE_STATE(br); } } } // Now remove container nsresult rv = RemoveContainer(&aNode); NS_ENSURE_SUCCESS(rv, rv); return NS_OK; } /** * GetPriorHTMLSibling() returns the previous editable sibling, if there is * one within the parent. */ nsIContent* HTMLEditor::GetPriorHTMLSibling(nsINode* aNode) { MOZ_ASSERT(aNode); nsIContent* node = aNode->GetPreviousSibling(); while (node && !IsEditable(node)) { node = node->GetPreviousSibling(); } return node; } nsresult HTMLEditor::GetPriorHTMLSibling(nsIDOMNode* inNode, nsCOMPtr<nsIDOMNode>* outNode) { NS_ENSURE_TRUE(outNode, NS_ERROR_NULL_POINTER); *outNode = nullptr; nsCOMPtr<nsINode> node = do_QueryInterface(inNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *outNode = do_QueryInterface(GetPriorHTMLSibling(node)); return NS_OK; } /** * GetPriorHTMLSibling() returns the previous editable sibling, if there is * one within the parent. just like above routine but takes a parent/offset * instead of a node. */ nsIContent* HTMLEditor::GetPriorHTMLSibling(nsINode* aParent, int32_t aOffset) { MOZ_ASSERT(aParent); nsIContent* node = aParent->GetChildAt(aOffset - 1); if (!node || IsEditable(node)) { return node; } return GetPriorHTMLSibling(node); } nsresult HTMLEditor::GetPriorHTMLSibling(nsIDOMNode* inParent, int32_t inOffset, nsCOMPtr<nsIDOMNode>* outNode) { NS_ENSURE_TRUE(outNode, NS_ERROR_NULL_POINTER); *outNode = nullptr; nsCOMPtr<nsINode> parent = do_QueryInterface(inParent); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); *outNode = do_QueryInterface(GetPriorHTMLSibling(parent, inOffset)); return NS_OK; } /** * GetNextHTMLSibling() returns the next editable sibling, if there is * one within the parent. */ nsIContent* HTMLEditor::GetNextHTMLSibling(nsINode* aNode) { MOZ_ASSERT(aNode); nsIContent* node = aNode->GetNextSibling(); while (node && !IsEditable(node)) { node = node->GetNextSibling(); } return node; } nsresult HTMLEditor::GetNextHTMLSibling(nsIDOMNode* inNode, nsCOMPtr<nsIDOMNode>* outNode) { NS_ENSURE_TRUE(outNode, NS_ERROR_NULL_POINTER); *outNode = nullptr; nsCOMPtr<nsINode> node = do_QueryInterface(inNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *outNode = do_QueryInterface(GetNextHTMLSibling(node)); return NS_OK; } /** * GetNextHTMLSibling() returns the next editable sibling, if there is * one within the parent. just like above routine but takes a parent/offset * instead of a node. */ nsIContent* HTMLEditor::GetNextHTMLSibling(nsINode* aParent, int32_t aOffset) { MOZ_ASSERT(aParent); nsIContent* node = aParent->GetChildAt(aOffset + 1); if (!node || IsEditable(node)) { return node; } return GetNextHTMLSibling(node); } nsresult HTMLEditor::GetNextHTMLSibling(nsIDOMNode* inParent, int32_t inOffset, nsCOMPtr<nsIDOMNode>* outNode) { NS_ENSURE_TRUE(outNode, NS_ERROR_NULL_POINTER); *outNode = nullptr; nsCOMPtr<nsINode> parent = do_QueryInterface(inParent); NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER); *outNode = do_QueryInterface(GetNextHTMLSibling(parent, inOffset)); return NS_OK; } /** * GetPriorHTMLNode() returns the previous editable leaf node, if there is * one within the <body>. */ nsIContent* HTMLEditor::GetPriorHTMLNode(nsINode* aNode, bool aNoBlockCrossing) { MOZ_ASSERT(aNode); if (!GetActiveEditingHost()) { return nullptr; } return GetPriorNode(aNode, true, aNoBlockCrossing); } nsresult HTMLEditor::GetPriorHTMLNode(nsIDOMNode* aNode, nsCOMPtr<nsIDOMNode>* aResultNode, bool aNoBlockCrossing) { NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *aResultNode = do_QueryInterface(GetPriorHTMLNode(node, aNoBlockCrossing)); return NS_OK; } /** * GetPriorHTMLNode() is same as above but takes {parent,offset} instead of * node. */ nsIContent* HTMLEditor::GetPriorHTMLNode(nsINode* aParent, int32_t aOffset, bool aNoBlockCrossing) { MOZ_ASSERT(aParent); if (!GetActiveEditingHost()) { return nullptr; } return GetPriorNode(aParent, aOffset, true, aNoBlockCrossing); } nsresult HTMLEditor::GetPriorHTMLNode(nsIDOMNode* aNode, int32_t aOffset, nsCOMPtr<nsIDOMNode>* aResultNode, bool aNoBlockCrossing) { NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *aResultNode = do_QueryInterface(GetPriorHTMLNode(node, aOffset, aNoBlockCrossing)); return NS_OK; } /** * GetNextHTMLNode() returns the next editable leaf node, if there is * one within the <body>. */ nsIContent* HTMLEditor::GetNextHTMLNode(nsINode* aNode, bool aNoBlockCrossing) { MOZ_ASSERT(aNode); nsIContent* result = GetNextNode(aNode, true, aNoBlockCrossing); if (result && !IsDescendantOfEditorRoot(result)) { return nullptr; } return result; } nsresult HTMLEditor::GetNextHTMLNode(nsIDOMNode* aNode, nsCOMPtr<nsIDOMNode>* aResultNode, bool aNoBlockCrossing) { NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *aResultNode = do_QueryInterface(GetNextHTMLNode(node, aNoBlockCrossing)); return NS_OK; } /** * GetNextHTMLNode() is same as above but takes {parent,offset} instead of node. */ nsIContent* HTMLEditor::GetNextHTMLNode(nsINode* aParent, int32_t aOffset, bool aNoBlockCrossing) { nsIContent* content = GetNextNode(aParent, aOffset, true, aNoBlockCrossing); if (content && !IsDescendantOfEditorRoot(content)) { return nullptr; } return content; } nsresult HTMLEditor::GetNextHTMLNode(nsIDOMNode* aNode, int32_t aOffset, nsCOMPtr<nsIDOMNode>* aResultNode, bool aNoBlockCrossing) { NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER); nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER); *aResultNode = do_QueryInterface(GetNextHTMLNode(node, aOffset, aNoBlockCrossing)); return NS_OK; } nsresult HTMLEditor::IsFirstEditableChild(nsIDOMNode* aNode, bool* aOutIsFirst) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(aOutIsFirst && node, NS_ERROR_NULL_POINTER); // init out parms *aOutIsFirst = false; // find first editable child and compare it to aNode nsCOMPtr<nsINode> parent = node->GetParentNode(); NS_ENSURE_TRUE(parent, NS_ERROR_FAILURE); *aOutIsFirst = (GetFirstEditableChild(*parent) == node); return NS_OK; } nsresult HTMLEditor::IsLastEditableChild(nsIDOMNode* aNode, bool* aOutIsLast) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); NS_ENSURE_TRUE(aOutIsLast && node, NS_ERROR_NULL_POINTER); // init out parms *aOutIsLast = false; // find last editable child and compare it to aNode nsCOMPtr<nsINode> parent = node->GetParentNode(); NS_ENSURE_TRUE(parent, NS_ERROR_FAILURE); *aOutIsLast = (GetLastEditableChild(*parent) == node); return NS_OK; } nsIContent* HTMLEditor::GetFirstEditableChild(nsINode& aNode) { nsCOMPtr<nsIContent> child = aNode.GetFirstChild(); while (child && !IsEditable(child)) { child = child->GetNextSibling(); } return child; } nsIContent* HTMLEditor::GetLastEditableChild(nsINode& aNode) { nsCOMPtr<nsIContent> child = aNode.GetLastChild(); while (child && !IsEditable(child)) { child = child->GetPreviousSibling(); } return child; } nsIContent* HTMLEditor::GetFirstEditableLeaf(nsINode& aNode) { nsCOMPtr<nsIContent> child = GetLeftmostChild(&aNode); while (child && (!IsEditable(child) || child->HasChildren())) { child = GetNextHTMLNode(child); // Only accept nodes that are descendants of aNode if (!aNode.Contains(child)) { return nullptr; } } return child; } nsIContent* HTMLEditor::GetLastEditableLeaf(nsINode& aNode) { nsCOMPtr<nsIContent> child = GetRightmostChild(&aNode, false); while (child && (!IsEditable(child) || child->HasChildren())) { child = GetPriorHTMLNode(child); // Only accept nodes that are descendants of aNode if (!aNode.Contains(child)) { return nullptr; } } return child; } /** * IsVisTextNode() figures out if textnode aTextNode has any visible content. */ nsresult HTMLEditor::IsVisTextNode(nsIContent* aNode, bool* outIsEmptyNode, bool aSafeToAskFrames) { MOZ_ASSERT(aNode); MOZ_ASSERT(aNode->NodeType() == nsIDOMNode::TEXT_NODE); MOZ_ASSERT(outIsEmptyNode); *outIsEmptyNode = true; uint32_t length = aNode->TextLength(); if (aSafeToAskFrames) { nsCOMPtr<nsISelectionController> selCon; nsresult rv = GetSelectionController(getter_AddRefs(selCon)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(selCon, NS_ERROR_FAILURE); bool isVisible = false; // ask the selection controller for information about whether any // of the data in the node is really rendered. This is really // something that frames know about, but we aren't supposed to talk to frames. // So we put a call in the selection controller interface, since it's already // in bed with frames anyway. (this is a fix for bug 22227, and a // partial fix for bug 46209) rv = selCon->CheckVisibilityContent(aNode, 0, length, &isVisible); NS_ENSURE_SUCCESS(rv, rv); if (isVisible) { *outIsEmptyNode = false; } } else if (length) { if (aNode->TextIsOnlyWhitespace()) { WSRunObject wsRunObj(this, aNode, 0); nsCOMPtr<nsINode> visNode; int32_t outVisOffset=0; WSType visType; wsRunObj.NextVisibleNode(aNode, 0, address_of(visNode), &outVisOffset, &visType); if (visType == WSType::normalWS || visType == WSType::text) { *outIsEmptyNode = (aNode != visNode); } } else { *outIsEmptyNode = false; } } return NS_OK; } /** * IsEmptyNode() figures out if aNode is an empty node. A block can have * children and still be considered empty, if the children are empty or * non-editable. */ nsresult HTMLEditor::IsEmptyNode(nsIDOMNode*aNode, bool* outIsEmptyNode, bool aSingleBRDoesntCount, bool aListOrCellNotEmpty, bool aSafeToAskFrames) { nsCOMPtr<nsINode> node = do_QueryInterface(aNode); return IsEmptyNode(node, outIsEmptyNode, aSingleBRDoesntCount, aListOrCellNotEmpty, aSafeToAskFrames); } nsresult HTMLEditor::IsEmptyNode(nsINode* aNode, bool* outIsEmptyNode, bool aSingleBRDoesntCount, bool aListOrCellNotEmpty, bool aSafeToAskFrames) { NS_ENSURE_TRUE(aNode && outIsEmptyNode, NS_ERROR_NULL_POINTER); *outIsEmptyNode = true; bool seenBR = false; return IsEmptyNodeImpl(aNode, outIsEmptyNode, aSingleBRDoesntCount, aListOrCellNotEmpty, aSafeToAskFrames, &seenBR); } /** * IsEmptyNodeImpl() is workhorse for IsEmptyNode(). */ nsresult HTMLEditor::IsEmptyNodeImpl(nsINode* aNode, bool* outIsEmptyNode, bool aSingleBRDoesntCount, bool aListOrCellNotEmpty, bool aSafeToAskFrames, bool* aSeenBR) { NS_ENSURE_TRUE(aNode && outIsEmptyNode && aSeenBR, NS_ERROR_NULL_POINTER); if (aNode->NodeType() == nsIDOMNode::TEXT_NODE) { return IsVisTextNode(static_cast<nsIContent*>(aNode), outIsEmptyNode, aSafeToAskFrames); } // if it's not a text node (handled above) and it's not a container, // then we don't call it empty (it's an <hr>, or <br>, etc.). // Also, if it's an anchor then don't treat it as empty - even though // anchors are containers, named anchors are "empty" but we don't // want to treat them as such. Also, don't call ListItems or table // cells empty if caller desires. Form Widgets not empty. if (!IsContainer(aNode->AsDOMNode()) || (HTMLEditUtils::IsNamedAnchor(aNode) || HTMLEditUtils::IsFormWidget(aNode) || (aListOrCellNotEmpty && (HTMLEditUtils::IsListItem(aNode) || HTMLEditUtils::IsTableCell(aNode))))) { *outIsEmptyNode = false; return NS_OK; } // need this for later bool isListItemOrCell = HTMLEditUtils::IsListItem(aNode) || HTMLEditUtils::IsTableCell(aNode); // loop over children of node. if no children, or all children are either // empty text nodes or non-editable, then node qualifies as empty for (nsCOMPtr<nsIContent> child = aNode->GetFirstChild(); child; child = child->GetNextSibling()) { // Is the child editable and non-empty? if so, return false if (EditorBase::IsEditable(child)) { if (child->NodeType() == nsIDOMNode::TEXT_NODE) { nsresult rv = IsVisTextNode(child, outIsEmptyNode, aSafeToAskFrames); NS_ENSURE_SUCCESS(rv, rv); // break out if we find we aren't emtpy if (!*outIsEmptyNode) { return NS_OK; } } else { // An editable, non-text node. We need to check its content. // Is it the node we are iterating over? if (child == aNode) { break; } if (aSingleBRDoesntCount && !*aSeenBR && child->IsHTMLElement(nsGkAtoms::br)) { // the first br in a block doesn't count if the caller so indicated *aSeenBR = true; } else { // is it an empty node of some sort? // note: list items or table cells are not considered empty // if they contain other lists or tables if (child->IsElement()) { if (isListItemOrCell) { if (HTMLEditUtils::IsList(child) || child->IsHTMLElement(nsGkAtoms::table)) { // break out if we find we aren't empty *outIsEmptyNode = false; return NS_OK; } } else if (HTMLEditUtils::IsFormWidget(child)) { // is it a form widget? // break out if we find we aren't empty *outIsEmptyNode = false; return NS_OK; } } bool isEmptyNode = true; nsresult rv = IsEmptyNodeImpl(child, &isEmptyNode, aSingleBRDoesntCount, aListOrCellNotEmpty, aSafeToAskFrames, aSeenBR); NS_ENSURE_SUCCESS(rv, rv); if (!isEmptyNode) { // otherwise it ain't empty *outIsEmptyNode = false; return NS_OK; } } } } } return NS_OK; } // add to aElement the CSS inline styles corresponding to the HTML attribute // aAttribute with its value aValue nsresult HTMLEditor::SetAttributeOrEquivalent(nsIDOMElement* aElement, const nsAString& aAttribute, const nsAString& aValue, bool aSuppressTransaction) { nsAutoScriptBlocker scriptBlocker; if (IsCSSEnabled() && mCSSEditUtils) { int32_t count; nsresult rv = mCSSEditUtils->SetCSSEquivalentToHTMLStyle(aElement, nullptr, &aAttribute, &aValue, &count, aSuppressTransaction); NS_ENSURE_SUCCESS(rv, rv); if (count) { // we found an equivalence ; let's remove the HTML attribute itself if it is set nsAutoString existingValue; bool wasSet = false; rv = GetAttributeValue(aElement, aAttribute, existingValue, &wasSet); NS_ENSURE_SUCCESS(rv, rv); if (!wasSet) { return NS_OK; } return aSuppressTransaction ? aElement->RemoveAttribute(aAttribute) : RemoveAttribute(aElement, aAttribute); } // count is an integer that represents the number of CSS declarations applied to the // element. If it is zero, we found no equivalence in this implementation for the // attribute if (aAttribute.EqualsLiteral("style")) { // if it is the style attribute, just add the new value to the existing style // attribute's value nsAutoString existingValue; bool wasSet = false; nsresult rv = GetAttributeValue(aElement, NS_LITERAL_STRING("style"), existingValue, &wasSet); NS_ENSURE_SUCCESS(rv, rv); existingValue.Append(' '); existingValue.Append(aValue); return aSuppressTransaction ? aElement->SetAttribute(aAttribute, existingValue) : SetAttribute(aElement, aAttribute, existingValue); } // we have no CSS equivalence for this attribute and it is not the style // attribute; let's set it the good'n'old HTML way return aSuppressTransaction ? aElement->SetAttribute(aAttribute, aValue) : SetAttribute(aElement, aAttribute, aValue); } // we are not in an HTML+CSS editor; let's set the attribute the HTML way return aSuppressTransaction ? aElement->SetAttribute(aAttribute, aValue) : SetAttribute(aElement, aAttribute, aValue); } nsresult HTMLEditor::RemoveAttributeOrEquivalent(nsIDOMElement* aElement, const nsAString& aAttribute, bool aSuppressTransaction) { nsCOMPtr<dom::Element> element = do_QueryInterface(aElement); NS_ENSURE_TRUE(element, NS_OK); nsCOMPtr<nsIAtom> attribute = NS_Atomize(aAttribute); MOZ_ASSERT(attribute); if (IsCSSEnabled() && mCSSEditUtils) { nsresult rv = mCSSEditUtils->RemoveCSSEquivalentToHTMLStyle( element, nullptr, &aAttribute, nullptr, aSuppressTransaction); NS_ENSURE_SUCCESS(rv, rv); } if (!element->HasAttr(kNameSpaceID_None, attribute)) { return NS_OK; } return aSuppressTransaction ? element->UnsetAttr(kNameSpaceID_None, attribute, /* aNotify = */ true) : RemoveAttribute(aElement, aAttribute); } nsresult HTMLEditor::SetIsCSSEnabled(bool aIsCSSPrefChecked) { if (!mCSSEditUtils) { return NS_ERROR_NOT_INITIALIZED; } mCSSEditUtils->SetCSSEnabled(aIsCSSPrefChecked); // Disable the eEditorNoCSSMask flag if we're enabling StyleWithCSS. uint32_t flags = mFlags; if (aIsCSSPrefChecked) { // Turn off NoCSS as we're enabling CSS flags &= ~eEditorNoCSSMask; } else { // Turn on NoCSS, as we're disabling CSS. flags |= eEditorNoCSSMask; } return SetFlags(flags); } // Set the block background color nsresult HTMLEditor::SetCSSBackgroundColor(const nsAString& aColor) { NS_ENSURE_TRUE(mRules, NS_ERROR_NOT_INITIALIZED); ForceCompositionEnd(); // Protect the edit rules object from dying nsCOMPtr<nsIEditRules> rules(mRules); RefPtr<Selection> selection = GetSelection(); NS_ENSURE_STATE(selection); bool isCollapsed = selection->Collapsed(); AutoEditBatch batchIt(this); AutoRules beginRulesSniffing(this, EditAction::insertElement, nsIEditor::eNext); AutoSelectionRestorer selectionRestorer(selection, this); AutoTransactionsConserveSelection dontSpazMySelection(this); bool cancel, handled; TextRulesInfo ruleInfo(EditAction::setTextProperty); nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled); NS_ENSURE_SUCCESS(rv, rv); if (!cancel && !handled) { // Loop through the ranges in the selection NS_NAMED_LITERAL_STRING(bgcolor, "bgcolor"); for (uint32_t i = 0; i < selection->RangeCount(); i++) { RefPtr<nsRange> range = selection->GetRangeAt(i); NS_ENSURE_TRUE(range, NS_ERROR_FAILURE); nsCOMPtr<Element> cachedBlockParent; // Check for easy case: both range endpoints in same text node nsCOMPtr<nsINode> startNode = range->GetStartParent(); int32_t startOffset = range->StartOffset(); nsCOMPtr<nsINode> endNode = range->GetEndParent(); int32_t endOffset = range->EndOffset(); if (startNode == endNode && IsTextNode(startNode)) { // Let's find the block container of the text node nsCOMPtr<Element> blockParent = GetBlockNodeParent(startNode); // And apply the background color to that block container if (blockParent && cachedBlockParent != blockParent) { cachedBlockParent = blockParent; mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr, &bgcolor, &aColor, false); } } else if (startNode == endNode && startNode->IsHTMLElement(nsGkAtoms::body) && isCollapsed) { // No block in the document, let's apply the background to the body mCSSEditUtils->SetCSSEquivalentToHTMLStyle(startNode->AsElement(), nullptr, &bgcolor, &aColor, false); } else if (startNode == endNode && (endOffset - startOffset == 1 || (!startOffset && !endOffset))) { // A unique node is selected, let's also apply the background color to // the containing block, possibly the node itself nsCOMPtr<nsIContent> selectedNode = startNode->GetChildAt(startOffset); nsCOMPtr<Element> blockParent = GetBlock(*selectedNode); if (blockParent && cachedBlockParent != blockParent) { cachedBlockParent = blockParent; mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr, &bgcolor, &aColor, false); } } else { // Not the easy case. Range not contained in single text node. There // are up to three phases here. There are all the nodes reported by // the subtree iterator to be processed. And there are potentially a // starting textnode and an ending textnode which are only partially // contained by the range. // Let's handle the nodes reported by the iterator. These nodes are // entirely contained in the selection range. We build up a list of // them (since doing operations on the document during iteration would // perturb the iterator). OwningNonNull<nsIContentIterator> iter = NS_NewContentSubtreeIterator(); nsTArray<OwningNonNull<nsINode>> arrayOfNodes; nsCOMPtr<nsINode> node; // Iterate range and build up array rv = iter->Init(range); // Init returns an error if no nodes in range. This can easily happen // with the subtree iterator if the selection doesn't contain any // *whole* nodes. if (NS_SUCCEEDED(rv)) { for (; !iter->IsDone(); iter->Next()) { node = do_QueryInterface(iter->GetCurrentNode()); NS_ENSURE_TRUE(node, NS_ERROR_FAILURE); if (IsEditable(node)) { arrayOfNodes.AppendElement(*node); } } } // First check the start parent of the range to see if it needs to be // separately handled (it does if it's a text node, due to how the // subtree iterator works - it will not have reported it). if (IsTextNode(startNode) && IsEditable(startNode)) { nsCOMPtr<Element> blockParent = GetBlockNodeParent(startNode); if (blockParent && cachedBlockParent != blockParent) { cachedBlockParent = blockParent; mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr, &bgcolor, &aColor, false); } } // Then loop through the list, set the property on each node for (auto& node : arrayOfNodes) { nsCOMPtr<Element> blockParent = GetBlock(node); if (blockParent && cachedBlockParent != blockParent) { cachedBlockParent = blockParent; mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr, &bgcolor, &aColor, false); } } arrayOfNodes.Clear(); // Last, check the end parent of the range to see if it needs to be // separately handled (it does if it's a text node, due to how the // subtree iterator works - it will not have reported it). if (IsTextNode(endNode) && IsEditable(endNode)) { nsCOMPtr<Element> blockParent = GetBlockNodeParent(endNode); if (blockParent && cachedBlockParent != blockParent) { cachedBlockParent = blockParent; mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr, &bgcolor, &aColor, false); } } } } } if (!cancel) { // Post-process rv = rules->DidDoAction(selection, &ruleInfo, rv); NS_ENSURE_SUCCESS(rv, rv); } return NS_OK; } NS_IMETHODIMP HTMLEditor::SetBackgroundColor(const nsAString& aColor) { if (IsCSSEnabled()) { // if we are in CSS mode, we have to apply the background color to the // containing block (or the body if we have no block-level element in // the document) return SetCSSBackgroundColor(aColor); } // but in HTML mode, we can only set the document's background color return SetHTMLBackgroundColor(aColor); } /** * NodesSameType() does these nodes have the same tag? */ bool HTMLEditor::AreNodesSameType(nsIContent* aNode1, nsIContent* aNode2) { MOZ_ASSERT(aNode1); MOZ_ASSERT(aNode2); if (aNode1->NodeInfo()->NameAtom() != aNode2->NodeInfo()->NameAtom()) { return false; } if (!IsCSSEnabled() || !aNode1->IsHTMLElement(nsGkAtoms::span)) { return true; } // If CSS is enabled, we are stricter about span nodes. return mCSSEditUtils->ElementsSameStyle(aNode1->AsDOMNode(), aNode2->AsDOMNode()); } nsresult HTMLEditor::CopyLastEditableChildStyles(nsIDOMNode* aPreviousBlock, nsIDOMNode* aNewBlock, Element** aOutBrNode) { nsCOMPtr<nsINode> newBlock = do_QueryInterface(aNewBlock); NS_ENSURE_STATE(newBlock || !aNewBlock); *aOutBrNode = nullptr; nsCOMPtr<nsIDOMNode> child, tmp; // first, clear out aNewBlock. Contract is that we want only the styles from previousBlock. nsresult rv = aNewBlock->GetFirstChild(getter_AddRefs(child)); while (NS_SUCCEEDED(rv) && child) { rv = DeleteNode(child); NS_ENSURE_SUCCESS(rv, rv); rv = aNewBlock->GetFirstChild(getter_AddRefs(child)); } // now find and clone the styles child = aPreviousBlock; tmp = aPreviousBlock; while (tmp) { child = tmp; nsCOMPtr<nsINode> child_ = do_QueryInterface(child); NS_ENSURE_STATE(child_ || !child); tmp = GetAsDOMNode(GetLastEditableChild(*child_)); } while (child && TextEditUtils::IsBreak(child)) { nsCOMPtr<nsIDOMNode> priorNode; rv = GetPriorHTMLNode(child, address_of(priorNode)); NS_ENSURE_SUCCESS(rv, rv); child = priorNode; } nsCOMPtr<Element> newStyles, deepestStyle; nsCOMPtr<nsINode> childNode = do_QueryInterface(child); nsCOMPtr<Element> childElement; if (childNode) { childElement = childNode->IsElement() ? childNode->AsElement() : childNode->GetParentElement(); } while (childElement && (childElement->AsDOMNode() != aPreviousBlock)) { if (HTMLEditUtils::IsInlineStyle(childElement) || childElement->IsHTMLElement(nsGkAtoms::span)) { if (newStyles) { newStyles = InsertContainerAbove(newStyles, childElement->NodeInfo()->NameAtom()); NS_ENSURE_STATE(newStyles); } else { deepestStyle = newStyles = CreateNode(childElement->NodeInfo()->NameAtom(), newBlock, 0); NS_ENSURE_STATE(newStyles); } CloneAttributes(newStyles, childElement); } childElement = childElement->GetParentElement(); } if (deepestStyle) { RefPtr<Element> retVal = CreateBR(deepestStyle, 0); retVal.forget(aOutBrNode); NS_ENSURE_STATE(*aOutBrNode); } return NS_OK; } nsresult HTMLEditor::GetElementOrigin(nsIDOMElement* aElement, int32_t& aX, int32_t& aY) { aX = 0; aY = 0; NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIPresShell> ps = GetPresShell(); NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED); nsCOMPtr<nsIContent> content = do_QueryInterface(aElement); nsIFrame *frame = content->GetPrimaryFrame(); NS_ENSURE_TRUE(frame, NS_OK); nsIFrame *container = ps->GetAbsoluteContainingBlock(frame); NS_ENSURE_TRUE(container, NS_OK); nsPoint off = frame->GetOffsetTo(container); aX = nsPresContext::AppUnitsToIntCSSPixels(off.x); aY = nsPresContext::AppUnitsToIntCSSPixels(off.y); return NS_OK; } nsresult HTMLEditor::EndUpdateViewBatch() { nsresult rv = EditorBase::EndUpdateViewBatch(); NS_ENSURE_SUCCESS(rv, rv); if (mUpdateCount) { return NS_OK; } // We may need to show resizing handles or update existing ones after // all transactions are done. This way of doing is preferred to DOM // mutation events listeners because all the changes the user can apply // to a document may result in multiple events, some of them quite hard // to listen too (in particular when an ancestor of the selection is // changed but the selection itself is not changed). RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED); return CheckSelectionStateForAnonymousButtons(selection); } NS_IMETHODIMP HTMLEditor::GetSelectionContainer(nsIDOMElement** aReturn) { nsCOMPtr<nsIDOMElement> container = static_cast<nsIDOMElement*>(GetAsDOMNode(GetSelectionContainer())); NS_ENSURE_TRUE(container, NS_ERROR_FAILURE); container.forget(aReturn); return NS_OK; } Element* HTMLEditor::GetSelectionContainer() { // If we don't get the selection, just skip this NS_ENSURE_TRUE(GetSelection(), nullptr); OwningNonNull<Selection> selection = *GetSelection(); nsCOMPtr<nsINode> focusNode; if (selection->Collapsed()) { focusNode = selection->GetFocusNode(); } else { int32_t rangeCount = selection->RangeCount(); if (rangeCount == 1) { RefPtr<nsRange> range = selection->GetRangeAt(0); nsCOMPtr<nsINode> startContainer = range->GetStartParent(); int32_t startOffset = range->StartOffset(); nsCOMPtr<nsINode> endContainer = range->GetEndParent(); int32_t endOffset = range->EndOffset(); if (startContainer == endContainer && startOffset + 1 == endOffset) { nsCOMPtr<nsIDOMElement> focusElement; nsresult rv = GetSelectedElement(EmptyString(), getter_AddRefs(focusElement)); NS_ENSURE_SUCCESS(rv, nullptr); if (focusElement) { focusNode = do_QueryInterface(focusElement); } } if (!focusNode) { focusNode = range->GetCommonAncestor(); } } else { for (int32_t i = 0; i < rangeCount; i++) { RefPtr<nsRange> range = selection->GetRangeAt(i); nsCOMPtr<nsINode> startContainer = range->GetStartParent(); if (!focusNode) { focusNode = startContainer; } else if (focusNode != startContainer) { focusNode = startContainer->GetParentNode(); break; } } } } if (focusNode && focusNode->GetAsText()) { focusNode = focusNode->GetParentNode(); } if (focusNode && focusNode->IsElement()) { return focusNode->AsElement(); } return nullptr; } NS_IMETHODIMP HTMLEditor::IsAnonymousElement(nsIDOMElement* aElement, bool* aReturn) { NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER); nsCOMPtr<nsIContent> content = do_QueryInterface(aElement); *aReturn = content->IsRootOfNativeAnonymousSubtree(); return NS_OK; } nsresult HTMLEditor::SetReturnInParagraphCreatesNewParagraph(bool aCreatesNewParagraph) { mCRInParagraphCreatesParagraph = aCreatesNewParagraph; return NS_OK; } bool HTMLEditor::GetReturnInParagraphCreatesNewParagraph() { return mCRInParagraphCreatesParagraph; } nsresult HTMLEditor::GetReturnInParagraphCreatesNewParagraph(bool* aCreatesNewParagraph) { *aCreatesNewParagraph = mCRInParagraphCreatesParagraph; return NS_OK; } already_AddRefed<nsIContent> HTMLEditor::GetFocusedContent() { NS_ENSURE_TRUE(mDocWeak, nullptr); nsFocusManager* fm = nsFocusManager::GetFocusManager(); NS_ENSURE_TRUE(fm, nullptr); nsCOMPtr<nsIContent> focusedContent = fm->GetFocusedContent(); nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); bool inDesignMode = doc->HasFlag(NODE_IS_EDITABLE); if (!focusedContent) { // in designMode, nobody gets focus in most cases. if (inDesignMode && OurWindowHasFocus()) { nsCOMPtr<nsIContent> docRoot = doc->GetRootElement(); return docRoot.forget(); } return nullptr; } if (inDesignMode) { return OurWindowHasFocus() && nsContentUtils::ContentIsDescendantOf(focusedContent, doc) ? focusedContent.forget() : nullptr; } // We're HTML editor for contenteditable // If the focused content isn't editable, or it has independent selection, // we don't have focus. if (!focusedContent->HasFlag(NODE_IS_EDITABLE) || focusedContent->HasIndependentSelection()) { return nullptr; } // If our window is focused, we're focused. return OurWindowHasFocus() ? focusedContent.forget() : nullptr; } already_AddRefed<nsIContent> HTMLEditor::GetFocusedContentForIME() { nsCOMPtr<nsIContent> focusedContent = GetFocusedContent(); if (!focusedContent) { return nullptr; } nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); NS_ENSURE_TRUE(doc, nullptr); return doc->HasFlag(NODE_IS_EDITABLE) ? nullptr : focusedContent.forget(); } bool HTMLEditor::IsActiveInDOMWindow() { NS_ENSURE_TRUE(mDocWeak, false); nsFocusManager* fm = nsFocusManager::GetFocusManager(); NS_ENSURE_TRUE(fm, false); nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); bool inDesignMode = doc->HasFlag(NODE_IS_EDITABLE); // If we're in designMode, we're always active in the DOM window. if (inDesignMode) { return true; } nsPIDOMWindowOuter* ourWindow = doc->GetWindow(); nsCOMPtr<nsPIDOMWindowOuter> win; nsIContent* content = nsFocusManager::GetFocusedDescendant(ourWindow, false, getter_AddRefs(win)); if (!content) { return false; } // We're HTML editor for contenteditable // If the active content isn't editable, or it has independent selection, // we're not active). if (!content->HasFlag(NODE_IS_EDITABLE) || content->HasIndependentSelection()) { return false; } return true; } Element* HTMLEditor::GetActiveEditingHost() { NS_ENSURE_TRUE(mDocWeak, nullptr); nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); NS_ENSURE_TRUE(doc, nullptr); if (doc->HasFlag(NODE_IS_EDITABLE)) { return doc->GetBodyElement(); } // We're HTML editor for contenteditable RefPtr<Selection> selection = GetSelection(); NS_ENSURE_TRUE(selection, nullptr); nsCOMPtr<nsIDOMNode> focusNode; nsresult rv = selection->GetFocusNode(getter_AddRefs(focusNode)); NS_ENSURE_SUCCESS(rv, nullptr); nsCOMPtr<nsIContent> content = do_QueryInterface(focusNode); if (!content) { return nullptr; } // If the active content isn't editable, or it has independent selection, // we're not active. if (!content->HasFlag(NODE_IS_EDITABLE) || content->HasIndependentSelection()) { return nullptr; } return content->GetEditingHost(); } already_AddRefed<EventTarget> HTMLEditor::GetDOMEventTarget() { // Don't use getDocument here, because we have no way of knowing // whether Init() was ever called. So we need to get the document // ourselves, if it exists. NS_PRECONDITION(mDocWeak, "This editor has not been initialized yet"); nsCOMPtr<mozilla::dom::EventTarget> target = do_QueryReferent(mDocWeak); return target.forget(); } bool HTMLEditor::ShouldReplaceRootElement() { if (!mRootElement) { // If we don't know what is our root element, we should find our root. return true; } // If we temporary set document root element to mRootElement, but there is // body element now, we should replace the root element by the body element. nsCOMPtr<nsIDOMHTMLElement> docBody; GetBodyElement(getter_AddRefs(docBody)); return !SameCOMIdentity(docBody, mRootElement); } void HTMLEditor::NotifyRootChanged() { nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this); RemoveEventListeners(); nsresult rv = InstallEventListeners(); if (NS_FAILED(rv)) { return; } UpdateRootElement(); if (!mRootElement) { return; } rv = BeginningOfDocument(); if (NS_FAILED(rv)) { return; } // When this editor has focus, we need to reset the selection limiter to // new root. Otherwise, that is going to be done when this gets focus. nsCOMPtr<nsINode> node = GetFocusedNode(); nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(node); if (target) { InitializeSelection(target); } SyncRealTimeSpell(); } nsresult HTMLEditor::GetBodyElement(nsIDOMHTMLElement** aBody) { NS_PRECONDITION(mDocWeak, "bad state, null mDocWeak"); nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryReferent(mDocWeak); if (!htmlDoc) { return NS_ERROR_NOT_INITIALIZED; } return htmlDoc->GetBody(aBody); } already_AddRefed<nsINode> HTMLEditor::GetFocusedNode() { nsCOMPtr<nsIContent> focusedContent = GetFocusedContent(); if (!focusedContent) { return nullptr; } nsIFocusManager* fm = nsFocusManager::GetFocusManager(); NS_ASSERTION(fm, "Focus manager is null"); nsCOMPtr<nsIDOMElement> focusedElement; fm->GetFocusedElement(getter_AddRefs(focusedElement)); if (focusedElement) { nsCOMPtr<nsINode> node = do_QueryInterface(focusedElement); return node.forget(); } nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); return doc.forget(); } bool HTMLEditor::OurWindowHasFocus() { NS_ENSURE_TRUE(mDocWeak, false); nsIFocusManager* fm = nsFocusManager::GetFocusManager(); NS_ENSURE_TRUE(fm, false); nsCOMPtr<mozIDOMWindowProxy> focusedWindow; fm->GetFocusedWindow(getter_AddRefs(focusedWindow)); if (!focusedWindow) { return false; } nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak); nsPIDOMWindowOuter* ourWindow = doc->GetWindow(); return ourWindow == focusedWindow; } bool HTMLEditor::IsAcceptableInputEvent(nsIDOMEvent* aEvent) { if (!EditorBase::IsAcceptableInputEvent(aEvent)) { return false; } // While there is composition, all composition events in its top level window // are always fired on the composing editor. Therefore, if this editor has // composition, the composition events should be handled in this editor. if (mComposition && aEvent->WidgetEventPtr()->AsCompositionEvent()) { return true; } NS_ENSURE_TRUE(mDocWeak, false); nsCOMPtr<nsIDOMEventTarget> target; aEvent->GetTarget(getter_AddRefs(target)); NS_ENSURE_TRUE(target, false); nsCOMPtr<nsIDocument> document = do_QueryReferent(mDocWeak); if (document->HasFlag(NODE_IS_EDITABLE)) { // If this editor is in designMode and the event target is the document, // the event is for this editor. nsCOMPtr<nsIDocument> targetDocument = do_QueryInterface(target); if (targetDocument) { return targetDocument == document; } // Otherwise, check whether the event target is in this document or not. nsCOMPtr<nsIContent> targetContent = do_QueryInterface(target); NS_ENSURE_TRUE(targetContent, false); return document == targetContent->GetUncomposedDoc(); } // This HTML editor is for contenteditable. We need to check the validity of // the target. nsCOMPtr<nsIContent> targetContent = do_QueryInterface(target); NS_ENSURE_TRUE(targetContent, false); // If the event is a mouse event, we need to check if the target content is // the focused editing host or its descendant. nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent); if (mouseEvent) { nsIContent* editingHost = GetActiveEditingHost(); // If there is no active editing host, we cannot handle the mouse event // correctly. if (!editingHost) { return false; } // If clicked on non-editable root element but the body element is the // active editing host, we should assume that the click event is targetted. if (targetContent == document->GetRootElement() && !targetContent->HasFlag(NODE_IS_EDITABLE) && editingHost == document->GetBodyElement()) { targetContent = editingHost; } // If the target element is neither the active editing host nor a descendant // of it, we may not be able to handle the event. if (!nsContentUtils::ContentIsDescendantOf(targetContent, editingHost)) { return false; } // If the clicked element has an independent selection, we shouldn't // handle this click event. if (targetContent->HasIndependentSelection()) { return false; } // If the target content is editable, we should handle this event. return targetContent->HasFlag(NODE_IS_EDITABLE); } // If the target of the other events which target focused element isn't // editable or has an independent selection, this editor shouldn't handle the // event. if (!targetContent->HasFlag(NODE_IS_EDITABLE) || targetContent->HasIndependentSelection()) { return false; } // Finally, check whether we're actually focused or not. When we're not // focused, we should ignore the dispatched event by script (or something) // because content editable element needs selection in itself for editing. // However, when we're not focused, it's not guaranteed. return IsActiveInDOMWindow(); } NS_IMETHODIMP HTMLEditor::GetPreferredIMEState(IMEState* aState) { // HTML editor don't prefer the CSS ime-mode because IE didn't do so too. aState->mOpen = IMEState::DONT_CHANGE_OPEN_STATE; if (IsReadonly() || IsDisabled()) { aState->mEnabled = IMEState::DISABLED; } else { aState->mEnabled = IMEState::ENABLED; } return NS_OK; } already_AddRefed<nsIContent> HTMLEditor::GetInputEventTargetContent() { nsCOMPtr<nsIContent> target = GetActiveEditingHost(); return target.forget(); } bool HTMLEditor::IsEditable(nsINode* aNode) { if (!TextEditor::IsEditable(aNode)) { return false; } if (aNode->IsElement()) { // If we're dealing with an element, then ask it whether it's editable. return aNode->IsEditable(); } // We might be dealing with a text node for example, which we always consider // to be editable. return true; } Element* HTMLEditor::GetEditorRoot() { return GetActiveEditingHost(); } } // namespace mozilla