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gecko-dev/editor/libeditor/HTMLEditor.cpp

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/* -*- 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/EditAction.h"
#include "mozilla/EditorDOMPoint.h"
#include "mozilla/EventStates.h"
#include "mozilla/mozInlineSpellChecker.h"
#include "mozilla/TextEvents.h"
#include "nsCRT.h"
#include "nsUnicharUtils.h"
#include "HTMLEditorEventListener.h"
#include "HTMLEditRules.h"
#include "HTMLEditUtils.h"
#include "HTMLURIRefObject.h"
#include "StyleSheetTransactions.h"
#include "TextEditUtils.h"
#include "TypeInState.h"
#include "nsIDOMDocument.h"
#include "nsIDocumentInlines.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMMouseEvent.h"
#include "nsISelectionController.h"
#include "nsIDOMHTMLDocument.h"
#include "nsILinkHandler.h"
#include "nsIInlineSpellChecker.h"
#include "mozilla/css/Loader.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 "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 "nsElementTable.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)
, mDefaultParagraphSeparator(
Preferences::GetBool("editor.use_div_for_default_newlines", true)
? ParagraphSeparator::div : ParagraphSeparator::br)
{
mIsHTMLEditorClass = true;
}
HTMLEditor::~HTMLEditor()
{
if (mRules && mRules->AsHTMLEditRules()) {
mRules->AsHTMLEditRules()->EndListeningToEditActions();
}
//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;
if (mLinkHandler && IsInitialized()) {
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(mLinkHandler)
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(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(mLinkHandler)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_ADDREF_INHERITED(HTMLEditor, EditorBase)
NS_IMPL_RELEASE_INHERITED(HTMLEditor, EditorBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(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 = MakeUnique<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<nsIDocument> document = GetDocument();
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> domDocument = GetDOMDocument();
if (domDocument) {
domDocument->GetDocumentElement(getter_AddRefs(rootElement));
}
}
mRootElement = do_QueryInterface(rootElement);
}
already_AddRefed<nsIContent>
HTMLEditor::FindSelectionRoot(nsINode* aNode)
{
NS_PRECONDITION(aNode->IsNodeOfType(nsINode::eDOCUMENT) ||
aNode->IsContent(),
"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()
{
if (NS_WARN_IF(!IsInitialized()) || NS_WARN_IF(!mEventListener)) {
return 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 (!IsInitialized()) {
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(this);
}
NS_IMETHODIMP
HTMLEditor::BeginningOfDocument()
{
// XXX Why doesn't this check if the document is alive?
if (!IsInitialized()) {
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->ComputeIndexOf(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->ComputeIndexOf(visNode) : -1;
done = true;
} else {
bool isEmptyBlock;
if (NS_SUCCEEDED(IsEmptyNode(visNode, &isEmptyBlock)) &&
isEmptyBlock) {
// Skip the empty block
curNode = visNode->GetParentNode();
curOffset = curNode ? curNode->ComputeIndexOf(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(WidgetKeyboardEvent* aKeyboardEvent)
{
// 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(aKeyboardEvent);
}
if (NS_WARN_IF(!aKeyboardEvent)) {
return NS_ERROR_UNEXPECTED;
}
MOZ_ASSERT(aKeyboardEvent->mMessage == eKeyPress,
"HandleKeyPressEvent gets non-keypress event");
switch (aKeyboardEvent->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(aKeyboardEvent);
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(aKeyboardEvent);
}
if (IsTabbable()) {
return NS_OK; // let it be used for focus switching
}
if (aKeyboardEvent->IsControl() || aKeyboardEvent->IsAlt() ||
aKeyboardEvent->IsMeta() || aKeyboardEvent->IsOS()) {
return NS_OK;
}
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection && selection->RangeCount(), NS_ERROR_FAILURE);
nsCOMPtr<nsINode> node = selection->GetRangeAt(0)->GetStartContainer();
MOZ_ASSERT(node);
nsCOMPtr<Element> blockParent = GetBlock(*node);
if (!blockParent) {
break;
}
bool handled = false;
nsresult rv = NS_OK;
if (HTMLEditUtils::IsTableElement(blockParent)) {
rv = TabInTable(aKeyboardEvent->IsShift(), &handled);
// TabInTable might cause reframe
if (Destroyed()) {
return NS_OK;
}
if (handled) {
ScrollSelectionIntoView(false);
}
} else if (HTMLEditUtils::IsListItem(blockParent)) {
rv = Indent(aKeyboardEvent->IsShift()
? NS_LITERAL_STRING("outdent")
: NS_LITERAL_STRING("indent"));
handled = true;
}
NS_ENSURE_SUCCESS(rv, rv);
if (handled) {
aKeyboardEvent->PreventDefault(); // consumed
return NS_OK;
}
if (aKeyboardEvent->IsShift()) {
return NS_OK; // don't type text for shift tabs
}
aKeyboardEvent->PreventDefault();
return TypedText(NS_LITERAL_STRING("\t"), eTypedText);
}
case NS_VK_RETURN:
if (aKeyboardEvent->IsControl() || aKeyboardEvent->IsAlt() ||
aKeyboardEvent->IsMeta() || aKeyboardEvent->IsOS()) {
return NS_OK;
}
aKeyboardEvent->PreventDefault(); // consumed
if (aKeyboardEvent->IsShift()) {
// 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 (!aKeyboardEvent->mCharCode || aKeyboardEvent->IsControl() ||
aKeyboardEvent->IsAlt() || aKeyboardEvent->IsMeta() ||
aKeyboardEvent->IsOS()) {
// we don't PreventDefault() here or keybindings like control-x won't work
return NS_OK;
}
aKeyboardEvent->PreventDefault();
nsAutoString str(aKeyboardEvent->mCharCode);
return TypedText(str, eTypedText);
}
/**
* 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);
// We want to treat these as block nodes even though nsHTMLElement says
// they're not.
if (aElement->IsAnyOfHTMLElements(nsGkAtoms::body,
nsGkAtoms::head,
nsGkAtoms::tbody,
nsGkAtoms::thead,
nsGkAtoms::tfoot,
nsGkAtoms::tr,
nsGkAtoms::th,
nsGkAtoms::td,
nsGkAtoms::dt,
nsGkAtoms::dd)) {
return true;
}
return nsHTMLElement::IsBlock(
nsHTMLTags::AtomTagToId(aElement->NodeInfo()->NameAtom()));
}
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);
}
/**
* GetBlockNodeParent returns enclosing block level ancestor, if any.
*/
Element*
HTMLEditor::GetBlockNodeParent(nsINode* aNode,
nsINode* aAncestorLimiter)
{
MOZ_ASSERT(aNode);
MOZ_ASSERT(!aAncestorLimiter ||
aNode == aAncestorLimiter ||
EditorUtils::IsDescendantOf(*aNode, *aAncestorLimiter),
"aNode isn't in aAncestorLimiter");
// The caller has already reached the limiter.
if (aNode == aAncestorLimiter) {
return nullptr;
}
nsCOMPtr<nsINode> p = aNode->GetParentNode();
while (p) {
if (NodeIsBlockStatic(p)) {
return p->AsElement();
}
// Now, we have reached the limiter, there is no block in its ancestors.
if (p == aAncestorLimiter) {
return nullptr;
}
p = p->GetParentNode();
}
return nullptr;
}
/**
* Returns the node if it's a block, otherwise GetBlockNodeParent
*/
Element*
HTMLEditor::GetBlock(nsINode& aNode,
nsINode* aAncestorLimiter)
{
MOZ_ASSERT(!aAncestorLimiter ||
&aNode == aAncestorLimiter ||
EditorUtils::IsDescendantOf(aNode, *aAncestorLimiter),
"aNode isn't in aAncestorLimiter");
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::IsVisibleBRElement(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 = GetNextEditableHTMLNodeInBlock(*aNode);
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 = GetPreviousEditableHTMLNodeInBlock(*aNode);
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::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)
{
MOZ_ASSERT(!aString.IsEmpty() || aAction != eTypedText);
AutoPlaceholderBatch batch(this, nsGkAtoms::TypingTxnName);
if (aAction == eTypedBR) {
// only inserts a br node
return InsertBR();
}
return TextEditor::TypedText(aString, aAction);
}
nsresult
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;
}
nsresult
HTMLEditor::InsertBR()
{
// calling it text insertion to trigger moz br treatment by rules
AutoRules beginRulesSniffing(this, EditAction::insertText, nsIEditor::eNext);
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_STATE(selection);
if (!selection->Collapsed()) {
nsresult rv = DeleteSelection(nsIEditor::eNone, nsIEditor::eStrip);
NS_ENSURE_SUCCESS(rv, rv);
}
EditorRawDOMPoint atStartOfSelection(GetStartPoint(selection));
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
return NS_ERROR_FAILURE;
}
// CreateBRImpl() will set selection after the new <br> element.
RefPtr<Element> newBRElement =
CreateBRImpl(*selection, atStartOfSelection, nsIEditor::eNext);
if (NS_WARN_IF(!newBRElement)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
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);
CommitComposition();
// 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> document = GetDocument();
if (NS_WARN_IF(!document)) {
return NS_ERROR_NOT_INITIALIZED;
}
RefPtr<nsContentList> nodeList =
document->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");
AutoPlaceholderBatch 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, EditorRawDOMPoint(headNode, offsetOfNewNode++));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::RebuildDocumentFromSource(const nsAString& aSourceString)
{
CommitComposition();
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
AutoPlaceholderBatch 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();
}
EditorRawDOMPoint
HTMLEditor::GetBetterInsertionPointFor(nsINode& aNodeToInsert,
const EditorRawDOMPoint& aPointToInsert)
{
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
return aPointToInsert;
}
// If the node to insert is not a block level element, we can insert it
// at any point.
if (!IsBlockNode(&aNodeToInsert)) {
return aPointToInsert;
}
WSRunObject wsObj(this, aPointToInsert.GetContainer(),
aPointToInsert.Offset());
// If the 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).
nsCOMPtr<nsINode> nextVisibleNode;
int32_t nextVisibleOffset = 0;
WSType nextVisibleType;
wsObj.NextVisibleNode(aPointToInsert.GetContainer(), aPointToInsert.Offset(),
address_of(nextVisibleNode),
&nextVisibleOffset, &nextVisibleType);
// So, if the next visible node isn't a <br> element, we can insert the block
// level element to the point.
if (!nextVisibleNode ||
!(nextVisibleType & WSType::br)) {
return aPointToInsert;
}
// However, we must not skip next <br> element 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.
nsCOMPtr<nsINode> previousVisibleNode;
int32_t previousVisibleOffset = 0;
WSType previousVisibleType;
wsObj.PriorVisibleNode(aPointToInsert.GetContainer(), aPointToInsert.Offset(),
address_of(previousVisibleNode),
&previousVisibleOffset, &previousVisibleType);
// So, if there is no previous visible node,
// or, if both nodes of the insertion point is <br> elements,
// or, if the previous visible node is different block,
// we need to skip the following <br>. So, otherwise, we can insert the
// block at the insertion point.
if (!previousVisibleNode ||
(previousVisibleType & WSType::br) ||
(previousVisibleType & WSType::thisBlock)) {
return aPointToInsert;
}
EditorRawDOMPoint afterBRNode(nextVisibleNode);
DebugOnly<bool> advanced = afterBRNode.AdvanceOffset();
NS_WARNING_ASSERTION(advanced,
"Failed to advance offset to after the <br> node");
return afterBRNode;
}
NS_IMETHODIMP
HTMLEditor::InsertElementAtSelection(nsIDOMElement* aElement,
bool aDeleteSelection)
{
// Protect the edit rules object from dying
RefPtr<TextEditRules> rules(mRules);
nsCOMPtr<Element> element = do_QueryInterface(aElement);
NS_ENSURE_TRUE(element, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aElement);
CommitComposition();
AutoPlaceholderBatch 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;
RulesInfo ruleInfo(EditAction::insertElement);
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();
}
}
if (selection->GetAnchorNode()) {
EditorRawDOMPoint atAnchor(selection->AnchorRef());
// Adjust position based on the node we are going to insert.
EditorRawDOMPoint pointToInsert =
GetBetterInsertionPointFor(*element, atAnchor);
if (NS_WARN_IF(!pointToInsert.IsSet())) {
return NS_ERROR_FAILURE;
}
EditorDOMPoint insertedPoint =
InsertNodeIntoProperAncestor(
*element, pointToInsert, SplitAtEdges::eAllowToCreateEmptyContainer);
if (NS_WARN_IF(!insertedPoint.IsSet())) {
return NS_ERROR_FAILURE;
}
// 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) &&
IsLastEditableChild(element)) {
DebugOnly<bool> advanced = insertedPoint.AdvanceOffset();
NS_WARNING_ASSERTION(advanced,
"Failed to advance offset from inserted point");
// Collapse selection to the new <br> element node after creating it.
RefPtr<Element> newBRElement =
CreateBRImpl(*selection, insertedPoint.AsRaw(), ePrevious);
if (NS_WARN_IF(!newBRElement)) {
return NS_ERROR_FAILURE;
}
}
}
}
rv = rules->DidDoAction(selection, &ruleInfo, rv);
return rv;
}
EditorDOMPoint
HTMLEditor::InsertNodeIntoProperAncestor(
nsIContent& aNode,
const EditorRawDOMPoint& aPointToInsert,
SplitAtEdges aSplitAtEdges)
{
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
return EditorDOMPoint();
}
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
// Search up the parent chain to find a suitable container.
EditorDOMPoint pointToInsert(aPointToInsert);
MOZ_ASSERT(pointToInsert.IsSet());
while (!CanContain(*pointToInsert.GetContainer(), aNode)) {
// If the current parent is a root (body or table element)
// then go no further - we can't insert.
if (pointToInsert.IsContainerHTMLElement(nsGkAtoms::body) ||
HTMLEditUtils::IsTableElement(pointToInsert.GetContainer())) {
return EditorDOMPoint();
}
// Get the next point.
pointToInsert.Set(pointToInsert.GetContainer());
if (NS_WARN_IF(!pointToInsert.IsSet())) {
return EditorDOMPoint();
}
if (!IsEditable(pointToInsert.GetContainer())) {
// 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.
pointToInsert = aPointToInsert;
break;
}
}
if (pointToInsert != aPointToInsert) {
// We need to split some levels above the original selection parent.
MOZ_ASSERT(pointToInsert.GetChild());
SplitNodeResult splitNodeResult =
SplitNodeDeep(*pointToInsert.GetChild(),
aPointToInsert, aSplitAtEdges);
if (NS_WARN_IF(splitNodeResult.Failed())) {
return EditorDOMPoint();
}
pointToInsert = splitNodeResult.SplitPoint();
MOZ_ASSERT(pointToInsert.IsSet());
}
{
// After inserting a node, pointToInsert will refer next sibling of
// the new node but keep referring the new node's offset.
// This method's result should be the point at insertion, it's useful
// even if the new node is moved by mutation observer immediately.
// So, let's lock only the offset and child node should be recomputed
// when it's necessary.
AutoEditorDOMPointChildInvalidator lockOffset(pointToInsert);
// Now we can insert the new node.
nsresult rv = InsertNode(aNode, pointToInsert.AsRaw());
if (NS_WARN_IF(NS_FAILED(rv))) {
return EditorDOMPoint();
}
}
return pointToInsert;
}
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);
nsINode* parent = element->GetParentNode();
if (NS_WARN_IF(!parent)) {
return NS_ERROR_FAILURE;
}
int32_t offsetInParent = parent->ComputeIndexOf(element);
// Collapse selection to just before desired element,
nsresult 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);
// Collapse selection to just after desired element,
EditorRawDOMPoint afterElement(element);
if (NS_WARN_IF(!afterElement.AdvanceOffset())) {
return NS_ERROR_FAILURE;
}
return selection->Collapse(afterElement);
}
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(mRules->AsHTMLEditRules());
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)->GetStartContainer();
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 = selection->GetRangeAt(0)->GetChildAtStartOffset();
//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();
}
// Return default value due to no parent node
if (!nodeToExamine) {
return NS_OK;
}
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(mRules->AsHTMLEditRules());
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(mRules->AsHTMLEditRules());
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(mRules->AsHTMLEditRules());
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(mRules->AsHTMLEditRules());
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
RefPtr<TextEditRules> rules(mRules);
bool cancel, handled;
AutoPlaceholderBatch beginBatching(this);
AutoRules beginRulesSniffing(this, EditAction::makeList, nsIEditor::eNext);
// pre-process
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
RulesInfo 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 && selection->Collapsed()) {
nsRange* firstRange = selection->GetRangeAt(0);
if (NS_WARN_IF(!firstRange)) {
return NS_ERROR_FAILURE;
}
EditorRawDOMPoint atStartOfSelection(firstRange->StartRef());
if (NS_WARN_IF(!atStartOfSelection.IsSet()) ||
NS_WARN_IF(!atStartOfSelection.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
// Have to find a place to put the list.
EditorDOMPoint pointToInsertList(atStartOfSelection);
RefPtr<nsAtom> listAtom = NS_Atomize(aListType);
while (!CanContainTag(*pointToInsertList.GetContainer(), *listAtom)) {
pointToInsertList.Set(pointToInsertList.GetContainer());
if (NS_WARN_IF(!pointToInsertList.IsSet()) ||
NS_WARN_IF(!pointToInsertList.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
}
if (pointToInsertList.GetContainer() != atStartOfSelection.GetContainer()) {
// We need to split up to the child of parent.
SplitNodeResult splitNodeResult =
SplitNodeDeep(*pointToInsertList.GetChild(),
atStartOfSelection,
SplitAtEdges::eAllowToCreateEmptyContainer);
if (NS_WARN_IF(splitNodeResult.Failed())) {
return splitNodeResult.Rv();
}
pointToInsertList = splitNodeResult.SplitPoint();
if (NS_WARN_IF(!pointToInsertList.IsSet())) {
return NS_ERROR_FAILURE;
}
}
// Create a list and insert it before the right node if we split some
// parents of start of selection above, or just start of selection
// otherwise.
RefPtr<Element> newList = CreateNode(listAtom, pointToInsertList.AsRaw());
NS_ENSURE_STATE(newList);
// make a list item
EditorRawDOMPoint atStartOfNewList(newList, 0);
RefPtr<Element> newItem = CreateNode(nsGkAtoms::li, atStartOfNewList);
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
RefPtr<TextEditRules> rules(mRules);
bool cancel, handled;
AutoPlaceholderBatch beginBatching(this);
AutoRules beginRulesSniffing(this, EditAction::removeList, nsIEditor::eNext);
// pre-process
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
RulesInfo 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
RefPtr<TextEditRules> rules(mRules);
bool cancel, handled;
AutoPlaceholderBatch beginBatching(this);
AutoRules beginRulesSniffing(this, EditAction::makeDefListItem,
nsIEditor::eNext);
// pre-process
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
RulesInfo 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
RefPtr<TextEditRules> rules(mRules);
bool cancel, handled;
AutoPlaceholderBatch beginBatching(this);
AutoRules beginRulesSniffing(this, EditAction::makeBasicBlock,
nsIEditor::eNext);
// pre-process
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
RulesInfo ruleInfo(EditAction::makeBasicBlock);
ruleInfo.blockType = &aBlockType;
nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (cancel || NS_FAILED(rv)) {
return rv;
}
if (!handled && selection->Collapsed()) {
nsRange* firstRange = selection->GetRangeAt(0);
if (NS_WARN_IF(!firstRange)) {
return NS_ERROR_FAILURE;
}
EditorRawDOMPoint atStartOfSelection(firstRange->StartRef());
if (NS_WARN_IF(!atStartOfSelection.IsSet()) ||
NS_WARN_IF(!atStartOfSelection.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
// Have to find a place to put the block.
EditorDOMPoint pointToInsertBlock(atStartOfSelection);
RefPtr<nsAtom> blockAtom = NS_Atomize(aBlockType);
while (!CanContainTag(*pointToInsertBlock.GetContainer(), *blockAtom)) {
pointToInsertBlock.Set(pointToInsertBlock.GetContainer());
if (NS_WARN_IF(!pointToInsertBlock.IsSet()) ||
NS_WARN_IF(!pointToInsertBlock.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
}
if (pointToInsertBlock.GetContainer() !=
atStartOfSelection.GetContainer()) {
// We need to split up to the child of the point to insert a block.
SplitNodeResult splitBlockResult =
SplitNodeDeep(*pointToInsertBlock.GetChild(),
atStartOfSelection,
SplitAtEdges::eAllowToCreateEmptyContainer);
if (NS_WARN_IF(splitBlockResult.Failed())) {
return splitBlockResult.Rv();
}
pointToInsertBlock = splitBlockResult.SplitPoint();
if (NS_WARN_IF(!pointToInsertBlock.IsSet())) {
return NS_ERROR_FAILURE;
}
}
// Create a block and insert it before the right node if we split some
// parents of start of selection above, or just start of selection
// otherwise.
RefPtr<Element> newBlock =
CreateNode(blockAtom, pointToInsertBlock.AsRaw());
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
RefPtr<TextEditRules> rules(mRules);
bool cancel, handled;
EditAction opID = EditAction::indent;
if (aIndent.LowerCaseEqualsLiteral("outdent")) {
opID = EditAction::outdent;
}
AutoPlaceholderBatch beginBatching(this);
AutoRules beginRulesSniffing(this, opID, nsIEditor::eNext);
// pre-process
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
RulesInfo ruleInfo(opID);
nsresult rv = rules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (cancel || NS_FAILED(rv)) {
return rv;
}
if (!handled && selection->Collapsed() && aIndent.EqualsLiteral("indent")) {
nsRange* firstRange = selection->GetRangeAt(0);
if (NS_WARN_IF(!firstRange)) {
return NS_ERROR_FAILURE;
}
EditorRawDOMPoint atStartOfSelection(firstRange->StartRef());
if (NS_WARN_IF(!atStartOfSelection.IsSet()) ||
NS_WARN_IF(!atStartOfSelection.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
// Have to find a place to put the blockquote.
EditorDOMPoint pointToInsertBlockquote(atStartOfSelection);
while (!CanContainTag(*pointToInsertBlockquote.GetContainer(),
*nsGkAtoms::blockquote)) {
pointToInsertBlockquote.Set(pointToInsertBlockquote.GetContainer());
if (NS_WARN_IF(!pointToInsertBlockquote.IsSet()) ||
NS_WARN_IF(!pointToInsertBlockquote.GetContainerAsContent())) {
return NS_ERROR_FAILURE;
}
}
if (pointToInsertBlockquote.GetContainer() !=
atStartOfSelection.GetContainer()) {
// We need to split up to the child of parent.
SplitNodeResult splitBlockquoteResult =
SplitNodeDeep(*pointToInsertBlockquote.GetChild(),
atStartOfSelection,
SplitAtEdges::eAllowToCreateEmptyContainer);
if (NS_WARN_IF(splitBlockquoteResult.Failed())) {
return splitBlockquoteResult.Rv();
}
pointToInsertBlockquote = splitBlockquoteResult.SplitPoint();
if (NS_WARN_IF(!pointToInsertBlockquote.IsSet())) {
return NS_ERROR_FAILURE;
}
}
// Create a list and insert it before the right node if we split some
// parents of start of selection above, or just start of selection
// otherwise.
RefPtr<Element> newBQ =
CreateNode(nsGkAtoms::blockquote, pointToInsertBlockquote.AsRaw());
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)->GetStartContainer(),
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
RefPtr<TextEditRules> rules(mRules);
AutoPlaceholderBatch 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);
RulesInfo 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();
if (NS_WARN_IF(!selection)) {
return nullptr;
}
const EditorDOMPoint atAnchor(selection->AnchorRef());
if (NS_WARN_IF(!atAnchor.IsSet())) {
return nullptr;
}
// Try to get the actual selected node
if (atAnchor.GetContainer()->HasChildNodes() &&
atAnchor.GetContainerAsContent()) {
node = atAnchor.GetChild();
}
// Anchor node is probably a text node - just use that
if (!node) {
node = atAnchor.GetContainer();
}
}
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<nsINode> startContainer = range->GetStartContainer();
nsIContent* startNode = range->GetChildAtStartOffset();
nsCOMPtr<nsINode> endContainer = range->GetEndContainer();
nsIContent* endNode = range->GetChildAtEndOffset();
// Optimization for a single selected element
if (startContainer && startContainer == endContainer &&
startNode && endNode && startNode->GetNextSibling() == endNode) {
nsCOMPtr<nsINode> selectedNode = startNode;
if (selectedNode) {
selectedNode->AsDOMNode()->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)
const RangeBoundary& anchor = selection->AnchorRef();
const RangeBoundary& focus = selection->FocusRef();
// Link node must be the same for both ends of selection
if (anchor.IsSet()) {
nsCOMPtr<nsIDOMElement> parentLinkOfAnchor;
nsresult rv =
GetElementOrParentByTagName(NS_LITERAL_STRING("href"),
anchor.Container()->AsDOMNode(),
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 (focus.IsSet()) {
// Link node must be the same for both ends of selection.
nsCOMPtr<nsIDOMElement> parentLinkOfFocus;
rv = GetElementOrParentByTagName(NS_LITERAL_STRING("href"),
focus.Container()->AsDOMNode(),
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
parentLinkOfAnchor.forget(aReturn);
return NS_OK;
}
} else if (anchor.GetChildAtOffset() && focus.GetChildAtOffset()) {
// Check if link node is the only thing selected
if (HTMLEditUtils::IsLink(anchor.GetChildAtOffset()) &&
anchor.Container() == focus.Container() &&
focus.GetChildAtOffset() ==
anchor.GetChildAtOffset()->GetNextSibling()) {
selectedElement = do_QueryInterface(anchor.GetChildAtOffset());
bNodeFound = true;
}
}
}
}
if (!isCollapsed) {
RefPtr<nsRange> currange = selection->GetRangeAt(0);
if (currange) {
nsresult rv;
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 NS_OK;
}
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
RefPtr<nsAtom> realTagAtom = NS_Atomize(realTagName);
RefPtr<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(
newElement, nsGkAtoms::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<nsIContent> content = do_QueryInterface(aAnchorElement);
RefPtr<HTMLAnchorElement> anchor = HTMLAnchorElement::FromContentOrNull(content);
if (!anchor) {
return NS_OK;
}
nsAutoString href;
anchor->GetHref(href);
if (href.IsEmpty()) {
return NS_OK;
}
nsresult rv;
AutoPlaceholderBatch beginBatching(this);
// Set all attributes found on the supplied anchor element
RefPtr<nsDOMAttributeMap> attrMap = anchor->Attributes();
NS_ENSURE_TRUE(attrMap, NS_ERROR_FAILURE);
uint32_t count = attrMap->Length();
nsAutoString value;
for (uint32_t i = 0; i < count; ++i) {
RefPtr<Attr> attribute = attrMap->Item(i);
if (attribute) {
// We must clear the string buffers
// because GetValue appends to previous string!
value.Truncate();
nsAtom* name = attribute->NodeInfo()->NameAtom();
attribute->GetValue(value);
rv = SetInlineProperty(nsGkAtoms::a, name, value);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
nsresult
HTMLEditor::SetHTMLBackgroundColor(const nsAString& aColor)
{
MOZ_ASSERT(IsInitialized(), "The HTMLEditor hasn't been initialized yet");
// 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
MOZ_ASSERT(IsInitialized(), "The HTMLEditor hasn't been initialized yet");
// 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);
}
}
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.
if (NS_WARN_IF(!IsInitialized())) {
return 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, nullptr, this);
}
NS_IMETHODIMP
HTMLEditor::RemoveStyleSheet(const nsAString& aURL)
{
RefPtr<StyleSheet> sheet = GetStyleSheetForURL(aURL);
NS_ENSURE_TRUE(sheet, NS_ERROR_UNEXPECTED);
RefPtr<RemoveStyleSheetTransaction> transaction =
RemoveStyleSheetTransaction::Create(*this, *sheet);
nsresult rv = DoTransaction(transaction);
if (NS_SUCCEEDED(rv)) {
mLastStyleSheetURL.Truncate(); // forget it
}
// Remove it from our internal list
return RemoveStyleSheetFromList(aURL);
}
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
if (NS_WARN_IF(!IsInitialized())) {
return 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> document = GetDocument();
sheet->SetAssociatedDocument(document, StyleSheet::NotOwnedByDocument);
sheet->SetDisabled(!aEnable);
return NS_OK;
}
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> document = GetDocument();
sheet->SetAssociatedDocument(document, StyleSheet::NotOwnedByDocument);
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);
}
}
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 (NS_WARN_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(nsIDocument& aDocument,
const nsAString& aStringToInsert,
const EditorRawDOMPoint& aPointToInsert,
EditorRawDOMPoint* aPointAfterInsertedString)
{
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
return NS_ERROR_INVALID_ARG;
}
// Do nothing if the node is read-only
if (!IsModifiableNode(aPointToInsert.GetContainer())) {
return NS_ERROR_FAILURE;
}
return EditorBase::InsertTextImpl(aDocument, aStringToInsert, aPointToInsert,
aPointAfterInsertedString);
}
void
HTMLEditor::ContentAppended(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aFirstNewContent)
{
DoContentInserted(aDocument, aContainer, aFirstNewContent, eAppended);
}
void
HTMLEditor::ContentInserted(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild)
{
DoContentInserted(aDocument, aContainer, aChild, 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,
InsertedOrAppended aInsertedOrAppended)
{
MOZ_ASSERT(aChild);
nsINode* container = NODE_FROM(aContainer, aDocument);
MOZ_ASSERT(container);
if (!IsInObservedSubtree(aDocument, aContainer, aChild)) {
return;
}
// XXX Why do we need this? This method is a helper of mutation observer.
// So, the callers of mutation observer should guarantee that this won't
// be deleted at least during the call.
RefPtr<HTMLEditor> kungFuDeathGrip(this);
if (ShouldReplaceRootElement()) {
UpdateRootElement();
nsContentUtils::AddScriptRunner(
NewRunnableMethod("HTMLEditor::NotifyRootChanged",
this,
&HTMLEditor::NotifyRootChanged));
}
// We don't need to handle our own modifications
else if (!mAction && container->IsEditable()) {
if (IsMozEditorBogusNode(aChild)) {
// Ignore insertion of the bogus node
return;
}
// Protect the edit rules object from dying
RefPtr<TextEditRules> rules(mRules);
rules->DocumentModified();
// Update spellcheck for only the newly-inserted node (bug 743819)
if (mInlineSpellChecker) {
RefPtr<nsRange> range = new nsRange(aChild);
nsIContent* endContent = aChild;
if (aInsertedOrAppended == eAppended) {
// Maybe more than 1 child was appended.
endContent = container->GetLastChild();
}
range->SelectNodesInContainer(container, aChild, endContent);
mInlineSpellChecker->SpellCheckRange(range);
}
}
}
void
HTMLEditor::ContentRemoved(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild,
nsIContent* aPreviousSibling)
{
if (!IsInObservedSubtree(aDocument, aContainer, aChild)) {
return;
}
// XXX Why do we need to do this? This method is a mutation observer's
// method. Therefore, the caller should guarantee that this won't be
// deleted during the call.
RefPtr<HTMLEditor> kungFuDeathGrip(this);
if (SameCOMIdentity(aChild, mRootElement)) {
mRootElement = nullptr;
nsContentUtils::AddScriptRunner(
NewRunnableMethod("HTMLEditor::NotifyRootChanged",
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
RefPtr<TextEditRules> 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::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)
{
AutoPlaceholderBatch batchIt(this);
if (!mLastStyleSheetURL.IsEmpty())
RemoveStyleSheet(mLastStyleSheetURL);
RefPtr<AddStyleSheetTransaction> transaction =
AddStyleSheetTransaction::Create(*this, *aSheet);
nsresult 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
CopyASCIItoUTF16(spec, mLastStyleSheetURL);
// 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
RefPtr<TextEditRules> 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
RefPtr<TextEditRules> rules(mRules);
// post processing
nsresult rv = rules ? rules->AfterEdit(mAction, mDirection) : NS_OK;
EditorBase::EndOperation(); // will clear mAction, mDirection
return rv;
}
bool
HTMLEditor::TagCanContainTag(nsAtom& aParentTag,
nsAtom& aChildTag) const
{
int32_t childTagEnum;
// XXX Should this handle #cdata-section too?
if (&aChildTag == nsGkAtoms::textTagName) {
childTagEnum = eHTMLTag_text;
} else {
childTagEnum = nsHTMLTags::AtomTagToId(&aChildTag);
}
int32_t parentTagEnum = nsHTMLTags::AtomTagToId(&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 = nsHTMLTags::StringTagToId(aNode->NodeName());
}
return HTMLEditUtils::IsContainer(tagEnum);
}
nsresult
HTMLEditor::SelectEntireDocument(Selection* aSelection)
{
if (!aSelection || !mRules) {
return NS_ERROR_NULL_POINTER;
}
// Protect the edit rules object from dying
RefPtr<TextEditRules> rules(mRules);
// is doc empty?
if (rules->DocumentIsEmpty()) {
// get editor root node
Element* rootElement = GetRoot();
// 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()
{
CommitComposition();
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_STATE(selection);
nsINode* anchorNode = selection->GetAnchorNode();
if (NS_WARN_IF(!anchorNode) || NS_WARN_IF(!anchorNode->IsContent())) {
return NS_ERROR_FAILURE;
}
nsIContent* anchorContent = anchorNode->AsContent();
nsIContent* rootContent;
if (anchorContent->HasIndependentSelection()) {
nsresult 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);
Maybe<mozilla::dom::Selection::AutoUserInitiated> userSelection;
if (!rootContent->IsEditable()) {
userSelection.emplace(selection);
}
ErrorResult errorResult;
selection->SelectAllChildren(*rootContent, errorResult);
return errorResult.StealNSResult();
}
// 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,
nsAtom* aProperty,
nsAtom* aAttribute,
const nsAString* aValue,
nsAString* outValue)
{
MOZ_ASSERT(aNode && aProperty);
while (aNode) {
if (aNode->IsElement()) {
Element* element = aNode->AsElement();
if (aProperty == element->NodeInfo()->NameAtom()) {
if (!aAttribute) {
return true;
}
nsAutoString value;
element->GetAttr(kNameSpaceID_None, aAttribute, value);
if (outValue) {
*outValue = value;
}
if (!value.IsEmpty()) {
if (!aValue) {
return true;
}
if (aValue->Equals(value, nsCaseInsensitiveStringComparator())) {
return true;
}
// We found the prop with the attribute, but the value doesn't
// match.
break;
}
}
}
aNode = aNode->GetParentNode();
}
return false;
}
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->Collapse(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 dontChangeMySelection(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->Collapse(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
RefPtr<Element> brElement = CreateBR(EditorRawDOMPoint(&aNode, 0));
if (NS_WARN_IF(!brElement)) {
return NS_ERROR_FAILURE;
}
}
// 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
EditorRawDOMPoint endOfNode;
endOfNode.SetToEndOf(&aNode);
RefPtr<Element> brElement = CreateBR(endOfNode);
if (NS_WARN_IF(!brElement)) {
return NS_ERROR_FAILURE;
}
}
}
} 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
RefPtr<Element> brElement = CreateBR(EditorRawDOMPoint(&aNode, 0));
if (NS_WARN_IF(!brElement)) {
return NS_ERROR_FAILURE;
}
}
}
}
// 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;
}
/**
* 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;
}
nsIContent*
HTMLEditor::GetPreviousEditableHTMLNodeInternal(nsINode& aNode,
bool aNoBlockCrossing)
{
if (!GetActiveEditingHost()) {
return nullptr;
}
return aNoBlockCrossing ? GetPreviousEditableNodeInBlock(aNode) :
GetPreviousEditableNode(aNode);
}
nsIContent*
HTMLEditor::GetPreviousEditableHTMLNodeInternal(const EditorRawDOMPoint& aPoint,
bool aNoBlockCrossing)
{
if (!GetActiveEditingHost()) {
return nullptr;
}
return aNoBlockCrossing ? GetPreviousEditableNodeInBlock(aPoint) :
GetPreviousEditableNode(aPoint);
}
nsIContent*
HTMLEditor::GetNextEditableHTMLNodeInternal(nsINode& aNode,
bool aNoBlockCrossing)
{
if (!GetActiveEditingHost()) {
return nullptr;
}
return aNoBlockCrossing ? GetNextEditableNodeInBlock(aNode) :
GetNextEditableNode(aNode);
}
nsIContent*
HTMLEditor::GetNextEditableHTMLNodeInternal(const EditorRawDOMPoint& aPoint,
bool aNoBlockCrossing)
{
if (!GetActiveEditingHost()) {
return nullptr;
}
return aNoBlockCrossing ? GetNextEditableNodeInBlock(aPoint) :
GetNextEditableNode(aPoint);
}
bool
HTMLEditor::IsFirstEditableChild(nsINode* aNode)
{
MOZ_ASSERT(aNode);
// find first editable child and compare it to aNode
nsCOMPtr<nsINode> parent = aNode->GetParentNode();
if (NS_WARN_IF(!parent)) {
return false;
}
return (GetFirstEditableChild(*parent) == aNode);
}
bool
HTMLEditor::IsLastEditableChild(nsINode* aNode)
{
MOZ_ASSERT(aNode);
// find last editable child and compare it to aNode
nsCOMPtr<nsINode> parent = aNode->GetParentNode();
if (NS_WARN_IF(!parent)) {
return false;
}
return (GetLastEditableChild(*parent) == aNode);
}
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 = GetNextEditableHTMLNode(*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 = GetPreviousEditableHTMLNode(*child);
// Only accept nodes that are descendants of aNode
if (!aNode.Contains(child)) {
return nullptr;
}
}
return child;
}
bool
HTMLEditor::IsInVisibleTextFrames(Text& aText)
{
nsISelectionController* selectionController = GetSelectionController();
if (NS_WARN_IF(!selectionController)) {
return false;
}
if (!aText.TextDataLength()) {
return 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.)
bool isVisible = false;
nsresult rv =
selectionController->CheckVisibilityContent(&aText,
0, aText.TextDataLength(),
&isVisible);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
return isVisible;
}
bool
HTMLEditor::IsVisibleTextNode(Text& aText)
{
if (!aText.TextDataLength()) {
return false;
}
if (!aText.TextIsOnlyWhitespace()) {
return true;
}
WSRunObject wsRunObj(this, &aText, 0);
nsCOMPtr<nsINode> nextVisibleNode;
int32_t unused = 0;
WSType visibleNodeType;
wsRunObj.NextVisibleNode(&aText, 0, address_of(nextVisibleNode),
&unused, &visibleNodeType);
return (visibleNodeType == WSType::normalWS ||
visibleNodeType == WSType::text) &&
&aText == nextVisibleNode;
}
/**
* 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 (Text* text = aNode->GetAsText()) {
*outIsEmptyNode = aSafeToAskFrames ? !IsInVisibleTextFrames(*text) :
!IsVisibleTextNode(*text);
return NS_OK;
}
// 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) ||
(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 (Text* text = child->GetAsText()) {
// break out if we find we aren't empty
*outIsEmptyNode = aSafeToAskFrames ? !IsInVisibleTextFrames(*text) :
!IsVisibleTextNode(*text);
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(Element* aElement,
nsAtom* aAttribute,
const nsAString& aValue,
bool aSuppressTransaction)
{
MOZ_ASSERT(aElement);
MOZ_ASSERT(aAttribute);
nsAutoScriptBlocker scriptBlocker;
if (!IsCSSEnabled() || !mCSSEditUtils) {
// we are not in an HTML+CSS editor; let's set the attribute the HTML way
if (mCSSEditUtils) {
mCSSEditUtils->RemoveCSSEquivalentToHTMLStyle(aElement, nullptr,
aAttribute, nullptr,
aSuppressTransaction);
}
return aSuppressTransaction ?
aElement->SetAttr(kNameSpaceID_None, aAttribute, aValue, true) :
SetAttribute(aElement, aAttribute, aValue);
}
int32_t count =
mCSSEditUtils->SetCSSEquivalentToHTMLStyle(aElement, nullptr,
aAttribute, &aValue,
aSuppressTransaction);
if (count) {
// we found an equivalence ; let's remove the HTML attribute itself if it
// is set
nsAutoString existingValue;
if (!aElement->GetAttr(kNameSpaceID_None, aAttribute, existingValue)) {
return NS_OK;
}
return aSuppressTransaction ?
aElement->UnsetAttr(kNameSpaceID_None, aAttribute, true) :
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 == nsGkAtoms::style) {
// if it is the style attribute, just add the new value to the existing
// style attribute's value
nsAutoString existingValue;
aElement->GetAttr(kNameSpaceID_None, nsGkAtoms::style, existingValue);
existingValue.Append(' ');
existingValue.Append(aValue);
return aSuppressTransaction ?
aElement->SetAttr(kNameSpaceID_None, aAttribute, existingValue, true) :
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->SetAttr(kNameSpaceID_None, aAttribute, aValue, true) :
SetAttribute(aElement, aAttribute, aValue);
}
nsresult
HTMLEditor::RemoveAttributeOrEquivalent(Element* aElement,
nsAtom* aAttribute,
bool aSuppressTransaction)
{
MOZ_ASSERT(aElement);
MOZ_ASSERT(aAttribute);
if (IsCSSEnabled() && mCSSEditUtils) {
nsresult rv =
mCSSEditUtils->RemoveCSSEquivalentToHTMLStyle(
aElement, nullptr, aAttribute, nullptr, aSuppressTransaction);
NS_ENSURE_SUCCESS(rv, rv);
}
if (!aElement->HasAttr(kNameSpaceID_None, aAttribute)) {
return NS_OK;
}
return aSuppressTransaction ?
aElement->UnsetAttr(kNameSpaceID_None, aAttribute, /* 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);
CommitComposition();
// Protect the edit rules object from dying
RefPtr<TextEditRules> rules(mRules);
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_STATE(selection);
bool isCollapsed = selection->Collapsed();
AutoPlaceholderBatch batchIt(this);
AutoRules beginRulesSniffing(this, EditAction::insertElement,
nsIEditor::eNext);
AutoSelectionRestorer selectionRestorer(selection, this);
AutoTransactionsConserveSelection dontChangeMySelection(this);
bool cancel, handled;
RulesInfo 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
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->GetStartContainer();
int32_t startOffset = range->StartOffset();
nsCOMPtr<nsINode> endNode = range->GetEndContainer();
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,
nsGkAtoms::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, nsGkAtoms::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 = range->GetChildAtStartOffset();
nsCOMPtr<Element> blockParent = GetBlock(*selectedNode);
if (blockParent && cachedBlockParent != blockParent) {
cachedBlockParent = blockParent;
mCSSEditUtils->SetCSSEquivalentToHTMLStyle(blockParent, nullptr,
nsGkAtoms::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,
nsGkAtoms::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,
nsGkAtoms::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,
nsGkAtoms::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(nsINode* aPreviousBlock,
nsINode* aNewBlock,
Element** aOutBrNode)
{
nsCOMPtr<nsINode> newBlock = do_QueryInterface(aNewBlock);
NS_ENSURE_STATE(newBlock || !aNewBlock);
*aOutBrNode = nullptr;
nsCOMPtr<nsINode> child, tmp;
// first, clear out aNewBlock. Contract is that we want only the styles from previousBlock.
child = aNewBlock->GetFirstChild();
while (child) {
nsresult rv = DeleteNode(child);
NS_ENSURE_SUCCESS(rv, rv);
child = aNewBlock->GetFirstChild();
}
// now find and clone the styles
child = aPreviousBlock;
tmp = aPreviousBlock;
while (tmp) {
child = tmp;
tmp = GetLastEditableChild(*child);
}
while (child && TextEditUtils::IsBreak(child)) {
child = GetPreviousEditableHTMLNode(*child);
}
nsCOMPtr<Element> newStyles, deepestStyle;
nsCOMPtr<nsINode> childNode = child;
nsCOMPtr<Element> childElement;
if (childNode) {
childElement = childNode->IsElement() ? childNode->AsElement()
: childNode->GetParentElement();
}
while (childElement && (childElement != aPreviousBlock)) {
if (HTMLEditUtils::IsInlineStyle(childElement) ||
childElement->IsHTMLElement(nsGkAtoms::span)) {
if (newStyles) {
newStyles = InsertContainerAbove(newStyles,
childElement->NodeInfo()->NameAtom());
NS_ENSURE_STATE(newStyles);
} else {
EditorRawDOMPoint atStartOfNewBlock(newBlock, 0);
deepestStyle = newStyles =
CreateNode(childElement->NodeInfo()->NameAtom(), atStartOfNewBlock);
NS_ENSURE_STATE(newStyles);
}
CloneAttributes(newStyles, childElement);
}
childElement = childElement->GetParentElement();
}
if (deepestStyle) {
RefPtr<Element> retVal = CreateBR(EditorRawDOMPoint(deepestStyle, 0));
retVal.forget(aOutBrNode);
NS_ENSURE_STATE(*aOutBrNode);
}
return NS_OK;
}
nsresult
HTMLEditor::GetElementOrigin(Element& aElement,
int32_t& aX,
int32_t& aY)
{
aX = 0;
aY = 0;
if (NS_WARN_IF(!IsInitialized())) {
return NS_ERROR_NOT_INITIALIZED;
}
nsCOMPtr<nsIPresShell> ps = GetPresShell();
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
nsIFrame* frame = aElement.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->GetStartContainer();
int32_t startOffset = range->StartOffset();
nsCOMPtr<nsINode> endContainer = range->GetEndContainer();
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->GetStartContainer();
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;
}
nsIContent*
HTMLEditor::GetFocusedContent()
{
nsFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, nullptr);
nsCOMPtr<nsIContent> focusedContent = fm->GetFocusedContent();
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return nullptr;
}
bool inDesignMode = document->HasFlag(NODE_IS_EDITABLE);
if (!focusedContent) {
// in designMode, nobody gets focus in most cases.
if (inDesignMode && OurWindowHasFocus()) {
return document->GetRootElement();
}
return nullptr;
}
if (inDesignMode) {
return OurWindowHasFocus() &&
nsContentUtils::ContentIsDescendantOf(focusedContent, document) ?
focusedContent.get() : 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.get() : nullptr;
}
already_AddRefed<nsIContent>
HTMLEditor::GetFocusedContentForIME()
{
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
if (!focusedContent) {
return nullptr;
}
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return nullptr;
}
return document->HasFlag(NODE_IS_EDITABLE) ? nullptr :
focusedContent.forget();
}
bool
HTMLEditor::IsActiveInDOMWindow()
{
nsFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, false);
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return false;
}
bool inDesignMode = document->HasFlag(NODE_IS_EDITABLE);
// If we're in designMode, we're always active in the DOM window.
if (inDesignMode) {
return true;
}
nsPIDOMWindowOuter* ourWindow = document->GetWindow();
nsCOMPtr<nsPIDOMWindowOuter> win;
nsIContent* content =
nsFocusManager::GetFocusedDescendant(ourWindow,
nsFocusManager::eOnlyCurrentWindow,
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()
{
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return nullptr;
}
if (document->HasFlag(NODE_IS_EDITABLE)) {
return document->GetBodyElement();
}
// We're HTML editor for contenteditable
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, nullptr);
nsINode* focusNode = selection->GetFocusNode();
if (NS_WARN_IF(!focusNode) || NS_WARN_IF(!focusNode->IsContent())) {
return nullptr;
}
nsIContent* content = focusNode->AsContent();
// 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();
}
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.
MOZ_ASSERT(IsInitialized(), "The HTMLEditor has not been initialized yet");
nsCOMPtr<mozilla::dom::EventTarget> target = GetDocument();
return target;
}
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)
{
MOZ_ASSERT(IsInitialized(), "The HTMLEditor hasn't been initialized yet");
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return NS_ERROR_NOT_INITIALIZED;
}
nsCOMPtr<nsIDOMHTMLDocument> domHTMLDocument = do_QueryInterface(document);
if (!domHTMLDocument) {
return NS_ERROR_NOT_INITIALIZED;
}
return domHTMLDocument->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> document = GetDocument();
return document.forget();
}
bool
HTMLEditor::OurWindowHasFocus()
{
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, false);
nsCOMPtr<mozIDOMWindowProxy> focusedWindow;
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
if (!focusedWindow) {
return false;
}
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return false;
}
nsPIDOMWindowOuter* ourWindow = document->GetWindow();
return ourWindow == focusedWindow;
}
bool
HTMLEditor::IsAcceptableInputEvent(WidgetGUIEvent* aGUIEvent)
{
if (!EditorBase::IsAcceptableInputEvent(aGUIEvent)) {
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 && aGUIEvent->AsCompositionEvent()) {
return true;
}
nsCOMPtr<nsIDOMEventTarget> target = aGUIEvent->GetDOMEventTarget();
NS_ENSURE_TRUE(target, false);
nsCOMPtr<nsIDocument> document = GetDocument();
if (NS_WARN_IF(!document)) {
return false;
}
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.
if (aGUIEvent->AsMouseEventBase()) {
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();
}
Element*
HTMLEditor::GetEditorRoot()
{
return GetActiveEditingHost();
}
} // namespace mozilla
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