mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
5232 lines
153 KiB
C++
5232 lines
153 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsEditor.h"
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#include "mozilla/DebugOnly.h" // for DebugOnly
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#include <stdio.h> // for nullptr, stdout
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#include <string.h> // for strcmp
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#include "ChangeAttributeTxn.h" // for ChangeAttributeTxn
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#include "CreateElementTxn.h" // for CreateElementTxn
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#include "DeleteNodeTxn.h" // for DeleteNodeTxn
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#include "DeleteRangeTxn.h" // for DeleteRangeTxn
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#include "DeleteTextTxn.h" // for DeleteTextTxn
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#include "EditAggregateTxn.h" // for EditAggregateTxn
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#include "EditTxn.h" // for EditTxn
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#include "IMETextTxn.h" // for IMETextTxn
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#include "InsertNodeTxn.h" // for InsertNodeTxn
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#include "InsertTextTxn.h" // for InsertTextTxn
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#include "JoinNodeTxn.h" // for JoinNodeTxn
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#include "PlaceholderTxn.h" // for PlaceholderTxn
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#include "SplitNodeTxn.h" // for SplitNodeTxn
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#include "mozFlushType.h" // for mozFlushType::Flush_Frames
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#include "mozISpellCheckingEngine.h"
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#include "mozInlineSpellChecker.h" // for mozInlineSpellChecker
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#include "mozilla/CheckedInt.h" // for CheckedInt
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#include "mozilla/IMEStateManager.h" // for IMEStateManager
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#include "mozilla/Preferences.h" // for Preferences
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#include "mozilla/dom/Selection.h" // for Selection, etc
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#include "mozilla/Services.h" // for GetObserverService
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#include "mozilla/TextComposition.h" // for TextComposition
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#include "mozilla/TextEvents.h"
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#include "mozilla/dom/Element.h" // for Element, nsINode::AsElement
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#include "mozilla/dom/Text.h"
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#include "mozilla/mozalloc.h" // for operator new, etc
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#include "nsAString.h" // for nsAString_internal::Length, etc
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#include "nsCCUncollectableMarker.h" // for nsCCUncollectableMarker
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#include "nsCaret.h" // for nsCaret
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#include "nsCaseTreatment.h"
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#include "nsCharTraits.h" // for NS_IS_HIGH_SURROGATE, etc
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#include "nsComponentManagerUtils.h" // for do_CreateInstance
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#include "nsComputedDOMStyle.h" // for nsComputedDOMStyle
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#include "nsContentUtils.h" // for nsContentUtils
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#include "nsDOMString.h" // for DOMStringIsNull
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#include "nsDebug.h" // for NS_ENSURE_TRUE, etc
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#include "nsEditorEventListener.h" // for nsEditorEventListener
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#include "nsEditorUtils.h" // for nsAutoRules, etc
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#include "nsError.h" // for NS_OK, etc
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#include "nsFocusManager.h" // for nsFocusManager
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#include "nsFrameSelection.h" // for nsFrameSelection
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#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::dir
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#include "nsIAbsorbingTransaction.h" // for nsIAbsorbingTransaction
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#include "nsIAtom.h" // for nsIAtom
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#include "nsIContent.h" // for nsIContent
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#include "nsIDOMAttr.h" // for nsIDOMAttr
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#include "nsIDOMCharacterData.h" // for nsIDOMCharacterData
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#include "nsIDOMDocument.h" // for nsIDOMDocument
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#include "nsIDOMElement.h" // for nsIDOMElement
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#include "nsIDOMEvent.h" // for nsIDOMEvent
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#include "nsIDOMEventListener.h" // for nsIDOMEventListener
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#include "nsIDOMEventTarget.h" // for nsIDOMEventTarget
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#include "nsIDOMHTMLElement.h" // for nsIDOMHTMLElement
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#include "nsIDOMKeyEvent.h" // for nsIDOMKeyEvent, etc
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#include "nsIDOMMozNamedAttrMap.h" // for nsIDOMMozNamedAttrMap
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#include "nsIDOMMouseEvent.h" // for nsIDOMMouseEvent
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#include "nsIDOMNode.h" // for nsIDOMNode, etc
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#include "nsIDOMNodeList.h" // for nsIDOMNodeList
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#include "nsIDOMText.h" // for nsIDOMText
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#include "nsIDocument.h" // for nsIDocument
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#include "nsIDocumentStateListener.h" // for nsIDocumentStateListener
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#include "nsIEditActionListener.h" // for nsIEditActionListener
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#include "nsIEditorObserver.h" // for nsIEditorObserver
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#include "nsIEditorSpellCheck.h" // for nsIEditorSpellCheck
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#include "nsIFrame.h" // for nsIFrame
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#include "nsIHTMLDocument.h" // for nsIHTMLDocument
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#include "nsIInlineSpellChecker.h" // for nsIInlineSpellChecker, etc
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#include "nsNameSpaceManager.h" // for kNameSpaceID_None, etc
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#include "nsINode.h" // for nsINode, etc
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#include "nsIObserverService.h" // for nsIObserverService
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#include "nsIPlaintextEditor.h" // for nsIPlaintextEditor, etc
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#include "nsIPresShell.h" // for nsIPresShell
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#include "nsISelectionController.h" // for nsISelectionController, etc
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#include "nsISelectionDisplay.h" // for nsISelectionDisplay, etc
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#include "nsISupportsBase.h" // for nsISupports
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#include "nsISupportsUtils.h" // for NS_ADDREF, NS_IF_ADDREF
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#include "nsITransaction.h" // for nsITransaction
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#include "nsITransactionManager.h"
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#include "nsIWeakReference.h" // for nsISupportsWeakReference
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#include "nsIWidget.h" // for nsIWidget, IMEState, etc
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#include "nsPIDOMWindow.h" // for nsPIDOMWindow
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#include "nsPresContext.h" // for nsPresContext
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#include "nsRange.h" // for nsRange
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#include "nsReadableUtils.h" // for EmptyString, ToNewCString
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#include "nsString.h" // for nsAutoString, nsString, etc
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#include "nsStringFwd.h" // for nsAFlatString
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#include "nsStyleConsts.h" // for NS_STYLE_DIRECTION_RTL, etc
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#include "nsStyleContext.h" // for nsStyleContext
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#include "nsStyleSheetTxns.h" // for AddStyleSheetTxn, etc
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#include "nsStyleStruct.h" // for nsStyleDisplay, nsStyleText, etc
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#include "nsStyleStructFwd.h" // for nsIFrame::StyleUIReset, etc
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#include "nsTextEditUtils.h" // for nsTextEditUtils
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#include "nsTextNode.h" // for nsTextNode
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#include "nsThreadUtils.h" // for nsRunnable
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#include "nsTransactionManager.h" // for nsTransactionManager
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#include "prtime.h" // for PR_Now
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class nsIOutputStream;
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class nsIParserService;
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class nsITransferable;
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#ifdef DEBUG
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#include "nsIDOMHTMLDocument.h" // for nsIDOMHTMLDocument
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::widget;
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// Defined in nsEditorRegistration.cpp
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extern nsIParserService *sParserService;
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//---------------------------------------------------------------------------
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//
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// nsEditor: base editor class implementation
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//
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//---------------------------------------------------------------------------
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nsEditor::nsEditor()
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: mPlaceHolderName(nullptr)
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, mSelState(nullptr)
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, mPhonetic(nullptr)
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, mModCount(0)
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, mFlags(0)
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, mUpdateCount(0)
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, mPlaceHolderBatch(0)
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, mAction(EditAction::none)
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, mIMETextOffset(0)
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, mIMETextLength(0)
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, mDirection(eNone)
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, mDocDirtyState(-1)
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, mSpellcheckCheckboxState(eTriUnset)
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, mShouldTxnSetSelection(true)
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, mDidPreDestroy(false)
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, mDidPostCreate(false)
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, mDispatchInputEvent(true)
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, mIsInEditAction(false)
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{
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}
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nsEditor::~nsEditor()
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{
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NS_ASSERTION(!mDocWeak || mDidPreDestroy, "Why PreDestroy hasn't been called?");
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if (mComposition) {
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mComposition->OnEditorDestroyed();
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mComposition = nullptr;
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}
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mTxnMgr = nullptr;
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delete mPhonetic;
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsEditor)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsEditor)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mRootElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mInlineSpellChecker)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mTxnMgr)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mIMETextNode)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mActionListeners)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mEditorObservers)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocStateListeners)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mEventTarget)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mEventListener)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsEditor)
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nsIDocument* currentDoc =
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tmp->mRootElement ? tmp->mRootElement->GetCurrentDoc() : nullptr;
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if (currentDoc &&
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nsCCUncollectableMarker::InGeneration(cb, currentDoc->GetMarkedCCGeneration())) {
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return NS_SUCCESS_INTERRUPTED_TRAVERSE;
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRootElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInlineSpellChecker)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTxnMgr)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIMETextNode)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActionListeners)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEditorObservers)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocStateListeners)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventTarget)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventListener)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEditor)
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NS_INTERFACE_MAP_ENTRY(nsIPhonetic)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY(nsIEditorIMESupport)
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NS_INTERFACE_MAP_ENTRY(nsIEditor)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditor)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEditor)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsEditor)
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NS_IMETHODIMP
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nsEditor::Init(nsIDOMDocument *aDoc, nsIContent *aRoot,
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nsISelectionController *aSelCon, uint32_t aFlags,
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const nsAString& aValue)
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{
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NS_PRECONDITION(aDoc, "bad arg");
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if (!aDoc)
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return NS_ERROR_NULL_POINTER;
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// First only set flags, but other stuff shouldn't be initialized now.
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// Don't move this call after initializing mDocWeak.
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// SetFlags() can check whether it's called during initialization or not by
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// them. Note that SetFlags() will be called by PostCreate().
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#ifdef DEBUG
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nsresult rv =
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#endif
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SetFlags(aFlags);
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NS_ASSERTION(NS_SUCCEEDED(rv), "SetFlags() failed");
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mDocWeak = do_GetWeakReference(aDoc); // weak reference to doc
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// HTML editors currently don't have their own selection controller,
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// so they'll pass null as aSelCon, and we'll get the selection controller
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// off of the presshell.
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nsCOMPtr<nsISelectionController> selCon;
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if (aSelCon) {
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mSelConWeak = do_GetWeakReference(aSelCon); // weak reference to selectioncontroller
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selCon = aSelCon;
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} else {
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nsCOMPtr<nsIPresShell> presShell = GetPresShell();
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selCon = do_QueryInterface(presShell);
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}
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NS_ASSERTION(selCon, "Selection controller should be available at this point");
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//set up root element if we are passed one.
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if (aRoot)
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mRootElement = do_QueryInterface(aRoot);
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mUpdateCount=0;
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// If this is an editor for <input> or <textarea>, mIMETextNode is always
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// recreated with same content. Therefore, we need to forget mIMETextNode,
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// but we need to keep storing mIMETextOffset and mIMETextLength becuase
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// they are necessary to restore IME selection and replacing composing string
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// when this receives NS_COMPOSITION_CHANGE event next time.
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if (mIMETextNode && !mIMETextNode->IsInComposedDoc()) {
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mIMETextNode = nullptr;
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}
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/* Show the caret */
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selCon->SetCaretReadOnly(false);
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selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
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selCon->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);//we want to see all the selection reflected to user
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NS_POSTCONDITION(mDocWeak, "bad state");
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// Make sure that the editor will be destroyed properly
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mDidPreDestroy = false;
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// Make sure that the ediotr will be created properly
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mDidPostCreate = false;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::PostCreate()
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{
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// Synchronize some stuff for the flags. SetFlags() will initialize
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// something by the flag difference. This is first time of that, so, all
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// initializations must be run. For such reason, we need to invert mFlags
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// value first.
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mFlags = ~mFlags;
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nsresult rv = SetFlags(~mFlags);
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NS_ENSURE_SUCCESS(rv, rv);
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// These operations only need to happen on the first PostCreate call
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if (!mDidPostCreate) {
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mDidPostCreate = true;
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// Set up listeners
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CreateEventListeners();
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rv = InstallEventListeners();
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NS_ENSURE_SUCCESS(rv, rv);
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// nuke the modification count, so the doc appears unmodified
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// do this before we notify listeners
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ResetModificationCount();
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// update the UI with our state
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NotifyDocumentListeners(eDocumentCreated);
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NotifyDocumentListeners(eDocumentStateChanged);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->AddObserver(this,
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SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION,
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false);
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}
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}
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// update nsTextStateManager and caret if we have focus
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nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
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if (focusedContent) {
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nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(focusedContent);
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if (target) {
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InitializeSelection(target);
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}
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// If the text control gets reframed during focus, Focus() would not be
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// called, so take a chance here to see if we need to spell check the text
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// control.
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nsEditorEventListener* listener =
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reinterpret_cast<nsEditorEventListener*> (mEventListener.get());
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listener->SpellCheckIfNeeded();
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IMEState newState;
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rv = GetPreferredIMEState(&newState);
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NS_ENSURE_SUCCESS(rv, NS_OK);
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nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
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IMEStateManager::UpdateIMEState(newState, content, this);
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}
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// FYI: This call might cause destroying this editor.
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IMEStateManager::OnEditorInitialized(this);
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return NS_OK;
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}
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/* virtual */
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void
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nsEditor::CreateEventListeners()
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{
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// Don't create the handler twice
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if (!mEventListener) {
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mEventListener = new nsEditorEventListener();
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}
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}
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nsresult
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nsEditor::InstallEventListeners()
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{
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NS_ENSURE_TRUE(mDocWeak && mEventListener,
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NS_ERROR_NOT_INITIALIZED);
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// Initialize the event target.
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nsCOMPtr<nsIContent> rootContent = GetRoot();
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NS_ENSURE_TRUE(rootContent, NS_ERROR_NOT_AVAILABLE);
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mEventTarget = do_QueryInterface(rootContent->GetParent());
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NS_ENSURE_TRUE(mEventTarget, NS_ERROR_NOT_AVAILABLE);
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nsEditorEventListener* listener =
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reinterpret_cast<nsEditorEventListener*>(mEventListener.get());
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nsresult rv = listener->Connect(this);
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if (mComposition) {
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// Restart to handle composition with new editor contents.
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mComposition->StartHandlingComposition(this);
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}
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return rv;
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}
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void
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nsEditor::RemoveEventListeners()
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{
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if (!mDocWeak || !mEventListener) {
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return;
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}
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reinterpret_cast<nsEditorEventListener*>(mEventListener.get())->Disconnect();
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if (mComposition) {
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// Even if this is called, don't release mComposition because this is
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// may be reused after reframing.
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mComposition->EndHandlingComposition(this);
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}
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mEventTarget = nullptr;
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}
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bool
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nsEditor::GetDesiredSpellCheckState()
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{
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// Check user override on this element
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if (mSpellcheckCheckboxState != eTriUnset) {
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return (mSpellcheckCheckboxState == eTriTrue);
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}
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// Check user preferences
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int32_t spellcheckLevel = Preferences::GetInt("layout.spellcheckDefault", 1);
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if (spellcheckLevel == 0) {
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return false; // Spellchecking forced off globally
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}
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if (!CanEnableSpellCheck()) {
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return false;
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}
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nsCOMPtr<nsIPresShell> presShell = GetPresShell();
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if (presShell) {
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nsPresContext* context = presShell->GetPresContext();
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if (context && !context->IsDynamic()) {
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return false;
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}
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}
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// Check DOM state
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nsCOMPtr<nsIContent> content = GetExposedRoot();
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if (!content) {
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return false;
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}
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nsCOMPtr<nsIDOMHTMLElement> element = do_QueryInterface(content);
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if (!element) {
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return false;
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}
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if (!IsPlaintextEditor()) {
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// Some of the page content might be editable and some not, if spellcheck=
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// is explicitly set anywhere, so if there's anything editable on the page,
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// return true and let the spellchecker figure it out.
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nsCOMPtr<nsIHTMLDocument> doc = do_QueryInterface(content->GetCurrentDoc());
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return doc && doc->IsEditingOn();
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}
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bool enable;
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element->GetSpellcheck(&enable);
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return enable;
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}
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NS_IMETHODIMP
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nsEditor::PreDestroy(bool aDestroyingFrames)
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{
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if (mDidPreDestroy)
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return NS_OK;
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IMEStateManager::OnEditorDestroying(this);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->RemoveObserver(this,
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SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION);
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}
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// Let spellchecker clean up its observers etc. It is important not to
|
|
// actually free the spellchecker here, since the spellchecker could have
|
|
// caused flush notifications, which could have gotten here if a textbox
|
|
// is being removed. Setting the spellchecker to nullptr could free the
|
|
// object that is still in use! It will be freed when the editor is
|
|
// destroyed.
|
|
if (mInlineSpellChecker)
|
|
mInlineSpellChecker->Cleanup(aDestroyingFrames);
|
|
|
|
// tell our listeners that the doc is going away
|
|
NotifyDocumentListeners(eDocumentToBeDestroyed);
|
|
|
|
// Unregister event listeners
|
|
RemoveEventListeners();
|
|
mActionListeners.Clear();
|
|
mEditorObservers.Clear();
|
|
mDocStateListeners.Clear();
|
|
mInlineSpellChecker = nullptr;
|
|
mSpellcheckCheckboxState = eTriUnset;
|
|
mRootElement = nullptr;
|
|
|
|
mDidPreDestroy = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetFlags(uint32_t *aFlags)
|
|
{
|
|
*aFlags = mFlags;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetFlags(uint32_t aFlags)
|
|
{
|
|
if (mFlags == aFlags) {
|
|
return NS_OK;
|
|
}
|
|
|
|
bool spellcheckerWasEnabled = CanEnableSpellCheck();
|
|
mFlags = aFlags;
|
|
|
|
if (!mDocWeak) {
|
|
// If we're initializing, we shouldn't do anything now.
|
|
// SetFlags() will be called by PostCreate(),
|
|
// we should synchronize some stuff for the flags at that time.
|
|
return NS_OK;
|
|
}
|
|
|
|
// The flag change may cause the spellchecker state change
|
|
if (CanEnableSpellCheck() != spellcheckerWasEnabled) {
|
|
nsresult rv = SyncRealTimeSpell();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// If this is called from PostCreate(), it will update the IME state if it's
|
|
// necessary.
|
|
if (!mDidPostCreate) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Might be changing editable state, so, we need to reset current IME state
|
|
// if we're focused and the flag change causes IME state change.
|
|
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
|
|
if (focusedContent) {
|
|
IMEState newState;
|
|
nsresult rv = GetPreferredIMEState(&newState);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// NOTE: When the enabled state isn't going to be modified, this method
|
|
// is going to do nothing.
|
|
nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
|
|
IMEStateManager::UpdateIMEState(newState, content, this);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetIsSelectionEditable(bool *aIsSelectionEditable)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aIsSelectionEditable);
|
|
|
|
// get current selection
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
|
|
// XXX we just check that the anchor node is editable at the moment
|
|
// we should check that all nodes in the selection are editable
|
|
nsCOMPtr<nsINode> anchorNode = selection->GetAnchorNode();
|
|
*aIsSelectionEditable = anchorNode && IsEditable(anchorNode);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetIsDocumentEditable(bool *aIsDocumentEditable)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aIsDocumentEditable);
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
*aIsDocumentEditable = !!doc;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<nsIDocument>
|
|
nsEditor::GetDocument()
|
|
{
|
|
NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
|
|
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
|
|
return doc.forget();
|
|
}
|
|
|
|
already_AddRefed<nsIDOMDocument>
|
|
nsEditor::GetDOMDocument()
|
|
{
|
|
NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
return doc.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocument(nsIDOMDocument **aDoc)
|
|
{
|
|
*aDoc = GetDOMDocument().take();
|
|
return *aDoc ? NS_OK : NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
already_AddRefed<nsIPresShell>
|
|
nsEditor::GetPresShell()
|
|
{
|
|
NS_PRECONDITION(mDocWeak, "bad state, null mDocWeak");
|
|
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
|
|
NS_ENSURE_TRUE(doc, nullptr);
|
|
nsCOMPtr<nsIPresShell> ps = doc->GetShell();
|
|
return ps.forget();
|
|
}
|
|
|
|
already_AddRefed<nsIWidget>
|
|
nsEditor::GetWidget()
|
|
{
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
NS_ENSURE_TRUE(ps, nullptr);
|
|
nsPresContext* pc = ps->GetPresContext();
|
|
NS_ENSURE_TRUE(pc, nullptr);
|
|
nsCOMPtr<nsIWidget> widget = pc->GetRootWidget();
|
|
NS_ENSURE_TRUE(widget.get(), nullptr);
|
|
return widget.forget();
|
|
}
|
|
|
|
/* attribute string contentsMIMEType; */
|
|
NS_IMETHODIMP
|
|
nsEditor::GetContentsMIMEType(char * *aContentsMIMEType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aContentsMIMEType);
|
|
*aContentsMIMEType = ToNewCString(mContentMIMEType);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetContentsMIMEType(const char * aContentsMIMEType)
|
|
{
|
|
mContentMIMEType.Assign(aContentsMIMEType ? aContentsMIMEType : "");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetSelectionController(nsISelectionController **aSel)
|
|
{
|
|
NS_ENSURE_TRUE(aSel, NS_ERROR_NULL_POINTER);
|
|
*aSel = nullptr; // init out param
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (mSelConWeak) {
|
|
selCon = do_QueryReferent(mSelConWeak);
|
|
} else {
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
selCon = do_QueryInterface(presShell);
|
|
}
|
|
NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
|
|
NS_ADDREF(*aSel = selCon);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelection(EDirection aAction, EStripWrappers aStripWrappers)
|
|
{
|
|
MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
|
|
return DeleteSelectionImpl(aAction, aStripWrappers);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetSelection(nsISelection** aSelection)
|
|
{
|
|
return GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetSelection(int16_t aSelectionType, nsISelection** aSelection)
|
|
{
|
|
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
|
|
*aSelection = nullptr;
|
|
nsCOMPtr<nsISelectionController> selcon;
|
|
GetSelectionController(getter_AddRefs(selcon));
|
|
NS_ENSURE_TRUE(selcon, NS_ERROR_NOT_INITIALIZED);
|
|
return selcon->GetSelection(aSelectionType, aSelection); // does an addref
|
|
}
|
|
|
|
Selection*
|
|
nsEditor::GetSelection(int16_t aSelectionType)
|
|
{
|
|
nsCOMPtr<nsISelection> sel;
|
|
nsresult res = GetSelection(aSelectionType, getter_AddRefs(sel));
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
return static_cast<Selection*>(sel.get());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoTransaction(nsITransaction* aTxn)
|
|
{
|
|
if (mPlaceHolderBatch && !mPlaceHolderTxn) {
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = new PlaceholderTxn();
|
|
|
|
// save off weak reference to placeholder txn
|
|
mPlaceHolderTxn = do_GetWeakReference(plcTxn);
|
|
plcTxn->Init(mPlaceHolderName, mSelState, this);
|
|
// placeholder txn took ownership of this pointer
|
|
mSelState = nullptr;
|
|
|
|
// QI to an nsITransaction since that's what DoTransaction() expects
|
|
nsCOMPtr<nsITransaction> theTxn = do_QueryInterface(plcTxn);
|
|
// we will recurse, but will not hit this case in the nested call
|
|
DoTransaction(theTxn);
|
|
|
|
if (mTxnMgr) {
|
|
nsCOMPtr<nsITransaction> topTxn = mTxnMgr->PeekUndoStack();
|
|
if (topTxn) {
|
|
plcTxn = do_QueryInterface(topTxn);
|
|
if (plcTxn) {
|
|
// there is a placeholder transaction on top of the undo stack. It
|
|
// is either the one we just created, or an earlier one that we are
|
|
// now merging into. From here on out remember this placeholder
|
|
// instead of the one we just created.
|
|
mPlaceHolderTxn = do_GetWeakReference(plcTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aTxn) {
|
|
// XXX: Why are we doing selection specific batching stuff here?
|
|
// XXX: Most entry points into the editor have auto variables that
|
|
// XXX: should trigger Begin/EndUpdateViewBatch() calls that will make
|
|
// XXX: these selection batch calls no-ops.
|
|
// XXX:
|
|
// XXX: I suspect that this was placed here to avoid multiple
|
|
// XXX: selection changed notifications from happening until after
|
|
// XXX: the transaction was done. I suppose that can still happen
|
|
// XXX: if an embedding application called DoTransaction() directly
|
|
// XXX: to pump its own transactions through the system, but in that
|
|
// XXX: case, wouldn't we want to use Begin/EndUpdateViewBatch() or
|
|
// XXX: its auto equivalent nsAutoUpdateViewBatch to ensure that
|
|
// XXX: selection listeners have access to accurate frame data?
|
|
// XXX:
|
|
// XXX: Note that if we did add Begin/EndUpdateViewBatch() calls
|
|
// XXX: we will need to make sure that they are disabled during
|
|
// XXX: the init of the editor for text widgets to avoid layout
|
|
// XXX: re-entry during initial reflow. - kin
|
|
|
|
// get the selection and start a batch change
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
|
|
selection->StartBatchChanges();
|
|
|
|
nsresult res;
|
|
if (mTxnMgr) {
|
|
res = mTxnMgr->DoTransaction(aTxn);
|
|
} else {
|
|
res = aTxn->DoTransaction();
|
|
}
|
|
if (NS_SUCCEEDED(res)) {
|
|
DoAfterDoTransaction(aTxn);
|
|
}
|
|
|
|
// no need to check res here, don't lose result of operation
|
|
selection->EndBatchChanges();
|
|
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EnableUndo(bool aEnable)
|
|
{
|
|
if (aEnable) {
|
|
if (!mTxnMgr) {
|
|
mTxnMgr = new nsTransactionManager();
|
|
}
|
|
mTxnMgr->SetMaxTransactionCount(-1);
|
|
} else if (mTxnMgr) {
|
|
// disable the transaction manager if it is enabled
|
|
mTxnMgr->Clear();
|
|
mTxnMgr->SetMaxTransactionCount(0);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetNumberOfUndoItems(int32_t* aNumItems)
|
|
{
|
|
*aNumItems = 0;
|
|
return mTxnMgr ? mTxnMgr->GetNumberOfUndoItems(aNumItems) : NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetNumberOfRedoItems(int32_t* aNumItems)
|
|
{
|
|
*aNumItems = 0;
|
|
return mTxnMgr ? mTxnMgr->GetNumberOfRedoItems(aNumItems) : NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetTransactionManager(nsITransactionManager* *aTxnManager)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aTxnManager);
|
|
|
|
*aTxnManager = nullptr;
|
|
NS_ENSURE_TRUE(mTxnMgr, NS_ERROR_FAILURE);
|
|
|
|
NS_ADDREF(*aTxnManager = mTxnMgr);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetTransactionManager(nsITransactionManager *aTxnManager)
|
|
{
|
|
NS_ENSURE_TRUE(aTxnManager, NS_ERROR_FAILURE);
|
|
|
|
// nsITransactionManager is builtinclass, so this is safe
|
|
mTxnMgr = static_cast<nsTransactionManager*>(aTxnManager);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Undo(uint32_t aCount)
|
|
{
|
|
ForceCompositionEnd();
|
|
|
|
bool hasTxnMgr, hasTransaction = false;
|
|
CanUndo(&hasTxnMgr, &hasTransaction);
|
|
NS_ENSURE_TRUE(hasTransaction, NS_OK);
|
|
|
|
nsAutoRules beginRulesSniffing(this, EditAction::undo, nsIEditor::eNone);
|
|
|
|
if (!mTxnMgr) {
|
|
return NS_OK;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < aCount; ++i) {
|
|
nsresult rv = mTxnMgr->UndoTransaction();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
DoAfterUndoTransaction();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CanUndo(bool *aIsEnabled, bool *aCanUndo)
|
|
{
|
|
NS_ENSURE_TRUE(aIsEnabled && aCanUndo, NS_ERROR_NULL_POINTER);
|
|
*aIsEnabled = !!mTxnMgr;
|
|
if (*aIsEnabled) {
|
|
int32_t numTxns = 0;
|
|
mTxnMgr->GetNumberOfUndoItems(&numTxns);
|
|
*aCanUndo = !!numTxns;
|
|
} else {
|
|
*aCanUndo = false;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Redo(uint32_t aCount)
|
|
{
|
|
bool hasTxnMgr, hasTransaction = false;
|
|
CanRedo(&hasTxnMgr, &hasTransaction);
|
|
NS_ENSURE_TRUE(hasTransaction, NS_OK);
|
|
|
|
nsAutoRules beginRulesSniffing(this, EditAction::redo, nsIEditor::eNone);
|
|
|
|
if (!mTxnMgr) {
|
|
return NS_OK;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < aCount; ++i) {
|
|
nsresult rv = mTxnMgr->RedoTransaction();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
DoAfterRedoTransaction();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CanRedo(bool *aIsEnabled, bool *aCanRedo)
|
|
{
|
|
NS_ENSURE_TRUE(aIsEnabled && aCanRedo, NS_ERROR_NULL_POINTER);
|
|
|
|
*aIsEnabled = !!mTxnMgr;
|
|
if (*aIsEnabled) {
|
|
int32_t numTxns = 0;
|
|
mTxnMgr->GetNumberOfRedoItems(&numTxns);
|
|
*aCanRedo = !!numTxns;
|
|
} else {
|
|
*aCanRedo = false;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginTransaction()
|
|
{
|
|
BeginUpdateViewBatch();
|
|
|
|
if (mTxnMgr) {
|
|
mTxnMgr->BeginBatch(nullptr);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndTransaction()
|
|
{
|
|
if (mTxnMgr) {
|
|
mTxnMgr->EndBatch(false);
|
|
}
|
|
|
|
EndUpdateViewBatch();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// These two routines are similar to the above, but do not use
|
|
// the transaction managers batching feature. Instead we use
|
|
// a placeholder transaction to wrap up any further transaction
|
|
// while the batch is open. The advantage of this is that
|
|
// placeholder transactions can later merge, if needed. Merging
|
|
// is unavailable between transaction manager batches.
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginPlaceHolderTransaction(nsIAtom *aName)
|
|
{
|
|
NS_PRECONDITION(mPlaceHolderBatch >= 0, "negative placeholder batch count!");
|
|
if (!mPlaceHolderBatch)
|
|
{
|
|
NotifyEditorObservers(eNotifyEditorObserversOfBefore);
|
|
// time to turn on the batch
|
|
BeginUpdateViewBatch();
|
|
mPlaceHolderTxn = nullptr;
|
|
mPlaceHolderName = aName;
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
if (selection) {
|
|
mSelState = new nsSelectionState();
|
|
mSelState->SaveSelection(selection);
|
|
}
|
|
}
|
|
mPlaceHolderBatch++;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndPlaceHolderTransaction()
|
|
{
|
|
NS_PRECONDITION(mPlaceHolderBatch > 0, "zero or negative placeholder batch count when ending batch!");
|
|
if (mPlaceHolderBatch == 1)
|
|
{
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
|
|
// By making the assumption that no reflow happens during the calls
|
|
// to EndUpdateViewBatch and ScrollSelectionIntoView, we are able to
|
|
// allow the selection to cache a frame offset which is used by the
|
|
// caret drawing code. We only enable this cache here; at other times,
|
|
// we have no way to know whether reflow invalidates it
|
|
// See bugs 35296 and 199412.
|
|
if (selection) {
|
|
selection->SetCanCacheFrameOffset(true);
|
|
}
|
|
|
|
{
|
|
// Hide the caret here to avoid hiding it twice, once in EndUpdateViewBatch
|
|
// and once in ScrollSelectionIntoView.
|
|
nsRefPtr<nsCaret> caret;
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
|
|
if (presShell)
|
|
caret = presShell->GetCaret();
|
|
|
|
// time to turn off the batch
|
|
EndUpdateViewBatch();
|
|
// make sure selection is in view
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
ScrollSelectionIntoView(false);
|
|
}
|
|
|
|
// cached for frame offset are Not available now
|
|
if (selection) {
|
|
selection->SetCanCacheFrameOffset(false);
|
|
}
|
|
|
|
if (mSelState)
|
|
{
|
|
// we saved the selection state, but never got to hand it to placeholder
|
|
// (else we ould have nulled out this pointer), so destroy it to prevent leaks.
|
|
delete mSelState;
|
|
mSelState = nullptr;
|
|
}
|
|
if (mPlaceHolderTxn) // we might have never made a placeholder if no action took place
|
|
{
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryReferent(mPlaceHolderTxn);
|
|
if (plcTxn)
|
|
{
|
|
plcTxn->EndPlaceHolderBatch();
|
|
}
|
|
else
|
|
{
|
|
// in the future we will check to make sure undo is off here,
|
|
// since that is the only known case where the placeholdertxn would disappear on us.
|
|
// For now just removing the assert.
|
|
}
|
|
// notify editor observers of action but if composing, it's done by
|
|
// compositionchange event handler.
|
|
if (!mComposition) {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
}
|
|
} else {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfCancel);
|
|
}
|
|
}
|
|
mPlaceHolderBatch--;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::ShouldTxnSetSelection(bool *aResult)
|
|
{
|
|
NS_ENSURE_TRUE(aResult, NS_ERROR_NULL_POINTER);
|
|
*aResult = mShouldTxnSetSelection;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetShouldTxnSetSelection(bool aShould)
|
|
{
|
|
mShouldTxnSetSelection = aShould;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentIsEmpty(bool *aDocumentIsEmpty)
|
|
{
|
|
*aDocumentIsEmpty = true;
|
|
|
|
dom::Element* root = GetRoot();
|
|
NS_ENSURE_TRUE(root, NS_ERROR_NULL_POINTER);
|
|
|
|
*aDocumentIsEmpty = !root->HasChildren();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// XXX: the rule system should tell us which node to select all on (ie, the root, or the body)
|
|
NS_IMETHODIMP nsEditor::SelectAll()
|
|
{
|
|
if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
|
|
ForceCompositionEnd();
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED);
|
|
return SelectEntireDocument(selection);
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::BeginningOfDocument()
|
|
{
|
|
if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
// get the selection
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// get the root element
|
|
dom::Element* rootElement = GetRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
|
|
|
|
// find first editable thingy
|
|
nsCOMPtr<nsINode> firstNode = GetFirstEditableNode(rootElement);
|
|
if (!firstNode) {
|
|
// just the root node, set selection to inside the root
|
|
return selection->CollapseNative(rootElement, 0);
|
|
}
|
|
|
|
if (firstNode->NodeType() == nsIDOMNode::TEXT_NODE) {
|
|
// If firstNode is text, set selection to beginning of the text node.
|
|
return selection->CollapseNative(firstNode, 0);
|
|
}
|
|
|
|
// Otherwise, it's a leaf node and we set the selection just in front of it.
|
|
nsCOMPtr<nsIContent> parent = firstNode->GetParent();
|
|
if (!parent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
int32_t offsetInParent = parent->IndexOf(firstNode);
|
|
return selection->CollapseNative(parent, offsetInParent);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndOfDocument()
|
|
{
|
|
NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// get selection
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
|
|
// get the root element
|
|
nsINode* node = GetRoot();
|
|
NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
|
|
nsINode* child = node->GetLastChild();
|
|
|
|
while (child && IsContainer(child->AsDOMNode())) {
|
|
node = child;
|
|
child = node->GetLastChild();
|
|
}
|
|
|
|
uint32_t length = node->Length();
|
|
return selection->CollapseNative(node, int32_t(length));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentModified(bool *outDocModified)
|
|
{
|
|
NS_ENSURE_TRUE(outDocModified, NS_ERROR_NULL_POINTER);
|
|
|
|
int32_t modCount = 0;
|
|
GetModificationCount(&modCount);
|
|
|
|
*outDocModified = (modCount != 0);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentCharacterSet(nsACString &characterSet)
|
|
{
|
|
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
|
|
|
|
characterSet = doc->GetDocumentCharacterSet();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetDocumentCharacterSet(const nsACString& characterSet)
|
|
{
|
|
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
|
|
|
|
doc->SetDocumentCharacterSet(characterSet);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Cut()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanCut(bool *aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Copy()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanCopy(bool *aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanDelete(bool *aCanDelete)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Paste(int32_t aSelectionType)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::PasteTransferable(nsITransferable *aTransferable)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanPaste(int32_t aSelectionType, bool *aCanPaste)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanPasteTransferable(nsITransferable *aTransferable, bool *aCanPaste)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetAttribute(nsIDOMElement* aElement, const nsAString& aAttribute,
|
|
const nsAString& aValue)
|
|
{
|
|
nsCOMPtr<Element> element = do_QueryInterface(aElement);
|
|
NS_ENSURE_TRUE(element, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIAtom> attribute = do_GetAtom(aAttribute);
|
|
|
|
nsRefPtr<ChangeAttributeTxn> txn =
|
|
CreateTxnForSetAttribute(*element, *attribute, aValue);
|
|
return DoTransaction(txn);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetAttributeValue(nsIDOMElement *aElement,
|
|
const nsAString & aAttribute,
|
|
nsAString & aResultValue,
|
|
bool *aResultIsSet)
|
|
{
|
|
NS_ENSURE_TRUE(aResultIsSet, NS_ERROR_NULL_POINTER);
|
|
*aResultIsSet = false;
|
|
if (!aElement) {
|
|
return NS_OK;
|
|
}
|
|
nsAutoString value;
|
|
nsresult rv = aElement->GetAttribute(aAttribute, value);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!DOMStringIsNull(value)) {
|
|
*aResultIsSet = true;
|
|
aResultValue = value;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveAttribute(nsIDOMElement* aElement, const nsAString& aAttribute)
|
|
{
|
|
nsCOMPtr<Element> element = do_QueryInterface(aElement);
|
|
NS_ENSURE_TRUE(element, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIAtom> attribute = do_GetAtom(aAttribute);
|
|
|
|
nsRefPtr<ChangeAttributeTxn> txn =
|
|
CreateTxnForRemoveAttribute(*element, *attribute);
|
|
return DoTransaction(txn);
|
|
}
|
|
|
|
|
|
bool
|
|
nsEditor::OutputsMozDirty()
|
|
{
|
|
// Return true for Composer (!eEditorAllowInteraction) or mail
|
|
// (eEditorMailMask), but false for webpages.
|
|
return !(mFlags & nsIPlaintextEditor::eEditorAllowInteraction) ||
|
|
(mFlags & nsIPlaintextEditor::eEditorMailMask);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::MarkNodeDirty(nsIDOMNode* aNode)
|
|
{
|
|
// Mark the node dirty, but not for webpages (bug 599983)
|
|
if (!OutputsMozDirty()) {
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<dom::Element> element = do_QueryInterface(aNode);
|
|
if (element) {
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::mozdirty,
|
|
EmptyString(), false);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::GetInlineSpellChecker(bool autoCreate,
|
|
nsIInlineSpellChecker ** aInlineSpellChecker)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aInlineSpellChecker);
|
|
|
|
if (mDidPreDestroy) {
|
|
// Don't allow people to get or create the spell checker once the editor
|
|
// is going away.
|
|
*aInlineSpellChecker = nullptr;
|
|
return autoCreate ? NS_ERROR_NOT_AVAILABLE : NS_OK;
|
|
}
|
|
|
|
// We don't want to show the spell checking UI if there are no spell check dictionaries available.
|
|
bool canSpell = mozInlineSpellChecker::CanEnableInlineSpellChecking();
|
|
if (!canSpell) {
|
|
*aInlineSpellChecker = nullptr;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (!mInlineSpellChecker && autoCreate) {
|
|
mInlineSpellChecker = do_CreateInstance(MOZ_INLINESPELLCHECKER_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (mInlineSpellChecker) {
|
|
rv = mInlineSpellChecker->Init(this);
|
|
if (NS_FAILED(rv))
|
|
mInlineSpellChecker = nullptr;
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_IF_ADDREF(*aInlineSpellChecker = mInlineSpellChecker);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::Observe(nsISupports* aSubj, const char *aTopic,
|
|
const char16_t *aData)
|
|
{
|
|
NS_ASSERTION(!strcmp(aTopic,
|
|
SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION),
|
|
"Unexpected observer topic");
|
|
|
|
// When mozInlineSpellChecker::CanEnableInlineSpellChecking changes
|
|
SyncRealTimeSpell();
|
|
|
|
// When nsIEditorSpellCheck::GetCurrentDictionary changes
|
|
if (mInlineSpellChecker) {
|
|
// if the current dictionary is no longer available, find another one
|
|
nsCOMPtr<nsIEditorSpellCheck> editorSpellCheck;
|
|
mInlineSpellChecker->GetSpellChecker(getter_AddRefs(editorSpellCheck));
|
|
if (editorSpellCheck) {
|
|
// Note: This might change the current dictionary, which may call
|
|
// this observer recursively.
|
|
editorSpellCheck->CheckCurrentDictionary();
|
|
}
|
|
|
|
// update the inline spell checker to reflect the new current dictionary
|
|
mInlineSpellChecker->SpellCheckRange(nullptr); // causes recheck
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::SyncRealTimeSpell()
|
|
{
|
|
bool enable = GetDesiredSpellCheckState();
|
|
|
|
// Initializes mInlineSpellChecker
|
|
nsCOMPtr<nsIInlineSpellChecker> spellChecker;
|
|
GetInlineSpellChecker(enable, getter_AddRefs(spellChecker));
|
|
|
|
if (mInlineSpellChecker) {
|
|
// We might have a mInlineSpellChecker even if there are no dictionaries
|
|
// available since we don't destroy the mInlineSpellChecker when the last
|
|
// dictionariy is removed, but in that case spellChecker is null
|
|
mInlineSpellChecker->SetEnableRealTimeSpell(enable && spellChecker);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::SetSpellcheckUserOverride(bool enable)
|
|
{
|
|
mSpellcheckCheckboxState = enable ? eTriTrue : eTriFalse;
|
|
|
|
return SyncRealTimeSpell();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateNode(const nsAString& aTag,
|
|
nsIDOMNode* aParent,
|
|
int32_t aPosition,
|
|
nsIDOMNode** aNewNode)
|
|
{
|
|
nsCOMPtr<nsIAtom> tag = do_GetAtom(aTag);
|
|
nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
|
|
NS_ENSURE_STATE(parent);
|
|
*aNewNode = GetAsDOMNode(CreateNode(tag, parent, aPosition).take());
|
|
NS_ENSURE_STATE(*aNewNode);
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
nsEditor::CreateNode(nsIAtom* aTag,
|
|
nsINode* aParent,
|
|
int32_t aPosition)
|
|
{
|
|
MOZ_ASSERT(aTag && aParent);
|
|
|
|
nsAutoRules beginRulesSniffing(this, EditAction::createNode, nsIEditor::eNext);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillCreateNode(nsDependentAtomString(aTag),
|
|
GetAsDOMNode(aParent), aPosition);
|
|
}
|
|
|
|
nsCOMPtr<Element> ret;
|
|
|
|
nsRefPtr<CreateElementTxn> txn =
|
|
CreateTxnForCreateElement(*aTag, *aParent, aPosition);
|
|
nsresult res = DoTransaction(txn);
|
|
if (NS_SUCCEEDED(res)) {
|
|
ret = txn->GetNewNode();
|
|
MOZ_ASSERT(ret);
|
|
}
|
|
|
|
mRangeUpdater.SelAdjCreateNode(aParent, aPosition);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidCreateNode(nsDependentAtomString(aTag), GetAsDOMNode(ret),
|
|
GetAsDOMNode(aParent), aPosition, res);
|
|
}
|
|
|
|
return ret.forget();
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::InsertNode(nsIDOMNode* aNode, nsIDOMNode* aParent, int32_t aPosition)
|
|
{
|
|
nsCOMPtr<nsIContent> node = do_QueryInterface(aNode);
|
|
nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
|
|
NS_ENSURE_TRUE(node && parent, NS_ERROR_NULL_POINTER);
|
|
|
|
return InsertNode(*node, *parent, aPosition);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::InsertNode(nsIContent& aNode, nsINode& aParent, int32_t aPosition)
|
|
{
|
|
nsAutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillInsertNode(aNode.AsDOMNode(), aParent.AsDOMNode(),
|
|
aPosition);
|
|
}
|
|
|
|
nsRefPtr<InsertNodeTxn> txn = CreateTxnForInsertNode(aNode, aParent,
|
|
aPosition);
|
|
nsresult res = DoTransaction(txn);
|
|
|
|
mRangeUpdater.SelAdjInsertNode(aParent.AsDOMNode(), aPosition);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidInsertNode(aNode.AsDOMNode(), aParent.AsDOMNode(), aPosition,
|
|
res);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SplitNode(nsIDOMNode* aNode,
|
|
int32_t aOffset,
|
|
nsIDOMNode** aNewLeftNode)
|
|
{
|
|
nsCOMPtr<nsIContent> node = do_QueryInterface(aNode);
|
|
NS_ENSURE_STATE(node);
|
|
ErrorResult rv;
|
|
nsCOMPtr<nsIContent> newNode = SplitNode(*node, aOffset, rv);
|
|
*aNewLeftNode = GetAsDOMNode(newNode.forget().take());
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::SplitNode(nsIContent& aNode, int32_t aOffset, ErrorResult& aResult)
|
|
{
|
|
nsAutoRules beginRulesSniffing(this, EditAction::splitNode,
|
|
nsIEditor::eNext);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillSplitNode(aNode.AsDOMNode(), aOffset);
|
|
}
|
|
|
|
nsRefPtr<SplitNodeTxn> txn = CreateTxnForSplitNode(aNode, aOffset);
|
|
aResult = DoTransaction(txn);
|
|
|
|
nsCOMPtr<nsIContent> newNode = aResult.Failed() ? nullptr
|
|
: txn->GetNewNode();
|
|
|
|
mRangeUpdater.SelAdjSplitNode(aNode, aOffset, newNode);
|
|
|
|
nsresult result = aResult.StealNSResult();
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidSplitNode(aNode.AsDOMNode(), aOffset, GetAsDOMNode(newNode),
|
|
result);
|
|
}
|
|
// Note: result might be a success code, so we can't use Throw() to
|
|
// set it on aResult.
|
|
aResult = result;
|
|
|
|
return newNode;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::JoinNodes(nsIDOMNode* aLeftNode,
|
|
nsIDOMNode* aRightNode,
|
|
nsIDOMNode*)
|
|
{
|
|
nsCOMPtr<nsINode> leftNode = do_QueryInterface(aLeftNode);
|
|
nsCOMPtr<nsINode> rightNode = do_QueryInterface(aRightNode);
|
|
NS_ENSURE_STATE(leftNode && rightNode && leftNode->GetParentNode());
|
|
return JoinNodes(*leftNode, *rightNode);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodes(nsINode& aLeftNode, nsINode& aRightNode)
|
|
{
|
|
nsCOMPtr<nsINode> parent = aLeftNode.GetParentNode();
|
|
MOZ_ASSERT(parent);
|
|
|
|
nsAutoRules beginRulesSniffing(this, EditAction::joinNode,
|
|
nsIEditor::ePrevious);
|
|
|
|
// Remember some values; later used for saved selection updating.
|
|
// Find the offset between the nodes to be joined.
|
|
int32_t offset = parent->IndexOf(&aRightNode);
|
|
// Find the number of children of the lefthand node
|
|
uint32_t oldLeftNodeLen = aLeftNode.Length();
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillJoinNodes(aLeftNode.AsDOMNode(), aRightNode.AsDOMNode(),
|
|
parent->AsDOMNode());
|
|
}
|
|
|
|
nsresult result;
|
|
nsRefPtr<JoinNodeTxn> txn = CreateTxnForJoinNode(aLeftNode, aRightNode);
|
|
if (txn) {
|
|
result = DoTransaction(txn);
|
|
}
|
|
|
|
mRangeUpdater.SelAdjJoinNodes(aLeftNode, aRightNode, *parent, offset,
|
|
(int32_t)oldLeftNodeLen);
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidJoinNodes(aLeftNode.AsDOMNode(), aRightNode.AsDOMNode(),
|
|
parent->AsDOMNode(), result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteNode(nsIDOMNode* aNode)
|
|
{
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
NS_ENSURE_STATE(node);
|
|
return DeleteNode(node);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::DeleteNode(nsINode* aNode)
|
|
{
|
|
nsAutoRules beginRulesSniffing(this, EditAction::createNode, nsIEditor::ePrevious);
|
|
|
|
// save node location for selection updating code.
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillDeleteNode(aNode->AsDOMNode());
|
|
}
|
|
|
|
nsRefPtr<DeleteNodeTxn> txn;
|
|
nsresult res = CreateTxnForDeleteNode(aNode, getter_AddRefs(txn));
|
|
if (NS_SUCCEEDED(res)) {
|
|
res = DoTransaction(txn);
|
|
}
|
|
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteNode(aNode->AsDOMNode(), res);
|
|
}
|
|
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
return NS_OK;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// ReplaceContainer: replace inNode with a new node (outNode) which is contructed
|
|
// to be of type aNodeType. Put inNodes children into outNode.
|
|
// Callers responsibility to make sure inNode's children can
|
|
// go in outNode.
|
|
already_AddRefed<Element>
|
|
nsEditor::ReplaceContainer(Element* aOldContainer,
|
|
nsIAtom* aNodeType,
|
|
nsIAtom* aAttribute,
|
|
const nsAString* aValue,
|
|
ECloneAttributes aCloneAttributes)
|
|
{
|
|
MOZ_ASSERT(aOldContainer && aNodeType);
|
|
|
|
nsCOMPtr<nsIContent> parent = aOldContainer->GetParent();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
|
|
int32_t offset = parent->IndexOf(aOldContainer);
|
|
|
|
// create new container
|
|
nsCOMPtr<Element> ret = CreateHTMLContent(aNodeType);
|
|
NS_ENSURE_TRUE(ret, nullptr);
|
|
|
|
// set attribute if needed
|
|
nsresult res;
|
|
if (aAttribute && aValue && aAttribute != nsGkAtoms::_empty) {
|
|
res = ret->SetAttr(kNameSpaceID_None, aAttribute, *aValue, true);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
}
|
|
if (aCloneAttributes == eCloneAttributes) {
|
|
CloneAttributes(ret, aOldContainer);
|
|
}
|
|
|
|
// notify our internal selection state listener
|
|
// (Note: A nsAutoSelectionReset object must be created
|
|
// before calling this to initialize mRangeUpdater)
|
|
AutoReplaceContainerSelNotify selStateNotify(mRangeUpdater, aOldContainer,
|
|
ret);
|
|
{
|
|
nsAutoTxnsConserveSelection conserveSelection(this);
|
|
while (aOldContainer->HasChildren()) {
|
|
nsCOMPtr<nsIContent> child = aOldContainer->GetFirstChild();
|
|
|
|
res = DeleteNode(child);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
res = InsertNode(*child, *ret, -1);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
}
|
|
}
|
|
|
|
// insert new container into tree
|
|
res = InsertNode(*ret, *parent, offset);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
// delete old container
|
|
res = DeleteNode(aOldContainer);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
return ret.forget();
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// RemoveContainer: remove inNode, reparenting its children (if any) into the
|
|
// parent of inNode
|
|
//
|
|
nsresult
|
|
nsEditor::RemoveContainer(nsIContent* aNode)
|
|
{
|
|
MOZ_ASSERT(aNode);
|
|
|
|
nsCOMPtr<nsINode> parent = aNode->GetParentNode();
|
|
NS_ENSURE_STATE(parent);
|
|
|
|
int32_t offset = parent->IndexOf(aNode);
|
|
|
|
// Loop through the children of inNode and promote them into inNode's parent
|
|
uint32_t nodeOrigLen = aNode->GetChildCount();
|
|
|
|
// notify our internal selection state listener
|
|
nsAutoRemoveContainerSelNotify selNotify(mRangeUpdater, aNode, parent,
|
|
offset, nodeOrigLen);
|
|
|
|
while (aNode->HasChildren()) {
|
|
nsCOMPtr<nsIContent> child = aNode->GetLastChild();
|
|
nsresult rv = DeleteNode(child);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = InsertNode(*child, *parent, offset);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
return DeleteNode(aNode);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// InsertContainerAbove: Insert a new parent for inNode, which is contructed to
|
|
// be of type aNodeType. outNode becomes a child of
|
|
// inNode's earlier parent. Caller's responsibility to
|
|
// make sure inNode's can be child of outNode, and
|
|
// outNode can be child of old parent.
|
|
already_AddRefed<Element>
|
|
nsEditor::InsertContainerAbove(nsIContent* aNode,
|
|
nsIAtom* aNodeType,
|
|
nsIAtom* aAttribute,
|
|
const nsAString* aValue)
|
|
{
|
|
MOZ_ASSERT(aNode && aNodeType);
|
|
|
|
nsCOMPtr<nsIContent> parent = aNode->GetParent();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
int32_t offset = parent->IndexOf(aNode);
|
|
|
|
// Create new container
|
|
nsCOMPtr<Element> newContent = CreateHTMLContent(aNodeType);
|
|
NS_ENSURE_TRUE(newContent, nullptr);
|
|
|
|
// Set attribute if needed
|
|
nsresult res;
|
|
if (aAttribute && aValue && aAttribute != nsGkAtoms::_empty) {
|
|
res = newContent->SetAttr(kNameSpaceID_None, aAttribute, *aValue, true);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
}
|
|
|
|
// Notify our internal selection state listener
|
|
nsAutoInsertContainerSelNotify selNotify(mRangeUpdater);
|
|
|
|
// Put inNode in new parent, outNode
|
|
res = DeleteNode(aNode);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
{
|
|
nsAutoTxnsConserveSelection conserveSelection(this);
|
|
res = InsertNode(*aNode, *newContent, 0);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
}
|
|
|
|
// Put new parent in doc
|
|
res = InsertNode(*newContent, *parent, offset);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
return newContent.forget();
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// MoveNode: move aNode to {aParent,aOffset}
|
|
nsresult
|
|
nsEditor::MoveNode(nsIContent* aNode, nsINode* aParent, int32_t aOffset)
|
|
{
|
|
MOZ_ASSERT(aNode);
|
|
MOZ_ASSERT(aParent);
|
|
MOZ_ASSERT(aOffset == -1 ||
|
|
(0 <= aOffset &&
|
|
AssertedCast<uint32_t>(aOffset) <= aParent->Length()));
|
|
|
|
nsCOMPtr<nsINode> oldParent = aNode->GetParentNode();
|
|
int32_t oldOffset = oldParent ? oldParent->IndexOf(aNode) : -1;
|
|
|
|
if (aOffset == -1) {
|
|
// Magic value meaning "move to end of aParent"
|
|
aOffset = AssertedCast<int32_t>(aParent->Length());
|
|
}
|
|
|
|
// Don't do anything if it's already in right place
|
|
if (aParent == oldParent && aOffset == oldOffset) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Notify our internal selection state listener
|
|
nsAutoMoveNodeSelNotify selNotify(mRangeUpdater, oldParent, oldOffset,
|
|
aParent, aOffset);
|
|
|
|
// Need to adjust aOffset if we're moving aNode later in its current parent
|
|
if (aParent == oldParent && oldOffset < aOffset) {
|
|
// When we delete aNode, it will make the offsets after it off by one
|
|
aOffset--;
|
|
}
|
|
|
|
// Hold a reference so aNode doesn't go away when we remove it (bug 772282)
|
|
nsCOMPtr<nsINode> kungFuDeathGrip = aNode;
|
|
|
|
nsresult rv = DeleteNode(aNode);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return InsertNode(*aNode, *aParent, aOffset);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddEditorObserver(nsIEditorObserver *aObserver)
|
|
{
|
|
// we don't keep ownership of the observers. They must
|
|
// remove themselves as observers before they are destroyed.
|
|
|
|
NS_ENSURE_TRUE(aObserver, NS_ERROR_NULL_POINTER);
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (!mEditorObservers.Contains(aObserver)) {
|
|
mEditorObservers.AppendElement(*aObserver);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveEditorObserver(nsIEditorObserver *aObserver)
|
|
{
|
|
NS_ENSURE_TRUE(aObserver, NS_ERROR_FAILURE);
|
|
|
|
mEditorObservers.RemoveElement(aObserver);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class EditorInputEventDispatcher : public nsRunnable
|
|
{
|
|
public:
|
|
EditorInputEventDispatcher(nsEditor* aEditor,
|
|
nsIContent* aTarget,
|
|
bool aIsComposing)
|
|
: mEditor(aEditor)
|
|
, mTarget(aTarget)
|
|
, mIsComposing(aIsComposing)
|
|
{
|
|
}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
// Note that we don't need to check mDispatchInputEvent here. We need
|
|
// to check it only when the editor requests to dispatch the input event.
|
|
|
|
if (!mTarget->IsInComposedDoc()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> ps = mEditor->GetPresShell();
|
|
if (!ps) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIWidget> widget = mEditor->GetWidget();
|
|
if (!widget) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Even if the change is caused by untrusted event, we need to dispatch
|
|
// trusted input event since it's a fact.
|
|
InternalEditorInputEvent inputEvent(true, NS_EDITOR_INPUT, widget);
|
|
inputEvent.time = static_cast<uint64_t>(PR_Now() / 1000);
|
|
inputEvent.mIsComposing = mIsComposing;
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsresult rv =
|
|
ps->HandleEventWithTarget(&inputEvent, nullptr, mTarget, &status);
|
|
NS_ENSURE_SUCCESS(rv, NS_OK); // print the warning if error
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsRefPtr<nsEditor> mEditor;
|
|
nsCOMPtr<nsIContent> mTarget;
|
|
bool mIsComposing;
|
|
};
|
|
|
|
void
|
|
nsEditor::NotifyEditorObservers(NotificationForEditorObservers aNotification)
|
|
{
|
|
// Copy the observers since EditAction()s can modify mEditorObservers.
|
|
nsTArray<mozilla::dom::OwningNonNull<nsIEditorObserver>> observers(mEditorObservers);
|
|
switch (aNotification) {
|
|
case eNotifyEditorObserversOfEnd:
|
|
mIsInEditAction = false;
|
|
for (auto& observer : observers) {
|
|
observer->EditAction();
|
|
}
|
|
|
|
if (!mDispatchInputEvent) {
|
|
return;
|
|
}
|
|
|
|
FireInputEvent();
|
|
break;
|
|
case eNotifyEditorObserversOfBefore:
|
|
mIsInEditAction = true;
|
|
for (auto& observer : observers) {
|
|
observer->BeforeEditAction();
|
|
}
|
|
break;
|
|
case eNotifyEditorObserversOfCancel:
|
|
mIsInEditAction = false;
|
|
for (auto& observer : observers) {
|
|
observer->CancelEditAction();
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Handle all notifications here");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEditor::FireInputEvent()
|
|
{
|
|
// We don't need to dispatch multiple input events if there is a pending
|
|
// input event. However, it may have different event target. If we resolved
|
|
// this issue, we need to manage the pending events in an array. But it's
|
|
// overwork. We don't need to do it for the very rare case.
|
|
|
|
nsCOMPtr<nsIContent> target = GetInputEventTargetContent();
|
|
NS_ENSURE_TRUE_VOID(target);
|
|
|
|
// NOTE: Don't refer IsIMEComposing() because it returns false even before
|
|
// compositionend. However, DOM Level 3 Events defines it should be
|
|
// true after compositionstart and before compositionend.
|
|
nsContentUtils::AddScriptRunner(
|
|
new EditorInputEventDispatcher(this, target, !!GetComposition()));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (!mActionListeners.Contains(aListener)) {
|
|
mActionListeners.AppendElement(*aListener);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_FAILURE);
|
|
|
|
mActionListeners.RemoveElement(aListener);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddDocumentStateListener(nsIDocumentStateListener *aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
if (!mDocStateListeners.Contains(aListener)) {
|
|
mDocStateListeners.AppendElement(*aListener);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveDocumentStateListener(nsIDocumentStateListener *aListener)
|
|
{
|
|
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
|
|
|
|
mDocStateListeners.RemoveElement(aListener);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::OutputToString(const nsAString& aFormatType,
|
|
uint32_t aFlags,
|
|
nsAString& aOutputString)
|
|
{
|
|
// these should be implemented by derived classes.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::OutputToStream(nsIOutputStream* aOutputStream,
|
|
const nsAString& aFormatType,
|
|
const nsACString& aCharsetOverride,
|
|
uint32_t aFlags)
|
|
{
|
|
// these should be implemented by derived classes.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DumpContentTree()
|
|
{
|
|
#ifdef DEBUG
|
|
if (mRootElement) {
|
|
mRootElement->List(stdout);
|
|
}
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DebugDumpContent()
|
|
{
|
|
#ifdef DEBUG
|
|
nsCOMPtr<nsIDOMHTMLDocument> doc = do_QueryReferent(mDocWeak);
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsCOMPtr<nsIDOMHTMLElement>bodyElem;
|
|
doc->GetBody(getter_AddRefs(bodyElem));
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(bodyElem);
|
|
if (content)
|
|
content->List();
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DebugUnitTests(int32_t *outNumTests, int32_t *outNumTestsFailed)
|
|
{
|
|
#ifdef DEBUG
|
|
NS_NOTREACHED("This should never get called. Overridden by subclasses");
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
bool
|
|
nsEditor::ArePreservingSelection()
|
|
{
|
|
return !(mSavedSel.IsEmpty());
|
|
}
|
|
|
|
void
|
|
nsEditor::PreserveSelectionAcrossActions(Selection* aSel)
|
|
{
|
|
mSavedSel.SaveSelection(aSel);
|
|
mRangeUpdater.RegisterSelectionState(mSavedSel);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::RestorePreservedSelection(Selection* aSel)
|
|
{
|
|
if (mSavedSel.IsEmpty()) return NS_ERROR_FAILURE;
|
|
mSavedSel.RestoreSelection(aSel);
|
|
StopPreservingSelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditor::StopPreservingSelection()
|
|
{
|
|
mRangeUpdater.DropSelectionState(mSavedSel);
|
|
mSavedSel.MakeEmpty();
|
|
}
|
|
|
|
void
|
|
nsEditor::EnsureComposition(mozilla::WidgetGUIEvent* aEvent)
|
|
{
|
|
if (mComposition) {
|
|
return;
|
|
}
|
|
// The compositionstart event must cause creating new TextComposition
|
|
// instance at being dispatched by IMEStateManager.
|
|
mComposition = IMEStateManager::GetTextCompositionFor(aEvent);
|
|
if (!mComposition) {
|
|
MOZ_CRASH("IMEStateManager doesn't return proper composition");
|
|
}
|
|
mComposition->StartHandlingComposition(this);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::BeginIMEComposition(WidgetCompositionEvent* aCompositionEvent)
|
|
{
|
|
MOZ_ASSERT(!mComposition, "There is composition already");
|
|
EnsureComposition(aCompositionEvent);
|
|
if (mPhonetic) {
|
|
mPhonetic->Truncate(0);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditor::EndIMEComposition()
|
|
{
|
|
NS_ENSURE_TRUE_VOID(mComposition); // nothing to do
|
|
|
|
// commit the IME transaction..we can get at it via the transaction mgr.
|
|
// Note that this means IME won't work without an undo stack!
|
|
if (mTxnMgr) {
|
|
nsCOMPtr<nsITransaction> txn = mTxnMgr->PeekUndoStack();
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryInterface(txn);
|
|
if (plcTxn) {
|
|
DebugOnly<nsresult> rv = plcTxn->Commit();
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),
|
|
"nsIAbsorbingTransaction::Commit() failed");
|
|
}
|
|
}
|
|
|
|
/* reset the data we need to construct a transaction */
|
|
mIMETextNode = nullptr;
|
|
mIMETextOffset = 0;
|
|
mIMETextLength = 0;
|
|
mComposition->EndHandlingComposition(this);
|
|
mComposition = nullptr;
|
|
|
|
// notify editor observers of action
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetPhonetic(nsAString& aPhonetic)
|
|
{
|
|
if (mPhonetic)
|
|
aPhonetic = *mPhonetic;
|
|
else
|
|
aPhonetic.Truncate(0);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::ForceCompositionEnd()
|
|
{
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
if (!ps) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
nsPresContext* pc = ps->GetPresContext();
|
|
if (!pc) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
return mComposition ?
|
|
IMEStateManager::NotifyIME(REQUEST_TO_COMMIT_COMPOSITION, pc) : NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetPreferredIMEState(IMEState *aState)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aState);
|
|
aState->mEnabled = IMEState::ENABLED;
|
|
aState->mOpen = IMEState::DONT_CHANGE_OPEN_STATE;
|
|
|
|
if (IsReadonly() || IsDisabled()) {
|
|
aState->mEnabled = IMEState::DISABLED;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = GetRoot();
|
|
NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
|
|
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
|
|
|
|
switch (frame->StyleUIReset()->mIMEMode) {
|
|
case NS_STYLE_IME_MODE_AUTO:
|
|
if (IsPasswordEditor())
|
|
aState->mEnabled = IMEState::PASSWORD;
|
|
break;
|
|
case NS_STYLE_IME_MODE_DISABLED:
|
|
// we should use password state for |ime-mode: disabled;|.
|
|
aState->mEnabled = IMEState::PASSWORD;
|
|
break;
|
|
case NS_STYLE_IME_MODE_ACTIVE:
|
|
aState->mOpen = IMEState::OPEN;
|
|
break;
|
|
case NS_STYLE_IME_MODE_INACTIVE:
|
|
aState->mOpen = IMEState::CLOSED;
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetComposing(bool* aResult)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aResult);
|
|
*aResult = IsIMEComposing();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/* Non-interface, public methods */
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetRootElement(nsIDOMElement **aRootElement)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aRootElement);
|
|
NS_ENSURE_TRUE(mRootElement, NS_ERROR_NOT_AVAILABLE);
|
|
nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(mRootElement);
|
|
rootElement.forget(aRootElement);
|
|
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
|
|
nsEditor::StartOperation(EditAction opID, nsIEditor::EDirection aDirection)
|
|
{
|
|
mAction = opID;
|
|
mDirection = aDirection;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/** All editor operations which alter the doc should be followed
|
|
* with a call to EndOperation */
|
|
NS_IMETHODIMP
|
|
nsEditor::EndOperation()
|
|
{
|
|
mAction = EditAction::none;
|
|
mDirection = eNone;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CloneAttribute(const nsAString & aAttribute,
|
|
nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
|
|
{
|
|
NS_ENSURE_TRUE(aDestNode && aSourceNode, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
|
|
nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
|
|
NS_ENSURE_TRUE(destElement && sourceElement, NS_ERROR_NO_INTERFACE);
|
|
|
|
nsAutoString attrValue;
|
|
bool isAttrSet;
|
|
nsresult rv = GetAttributeValue(sourceElement,
|
|
aAttribute,
|
|
attrValue,
|
|
&isAttrSet);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (isAttrSet)
|
|
rv = SetAttribute(destElement, aAttribute, attrValue);
|
|
else
|
|
rv = RemoveAttribute(destElement, aAttribute);
|
|
|
|
return rv;
|
|
}
|
|
|
|
// Objects must be DOM elements
|
|
NS_IMETHODIMP
|
|
nsEditor::CloneAttributes(nsIDOMNode* aDest, nsIDOMNode* aSource)
|
|
{
|
|
NS_ENSURE_TRUE(aDest && aSource, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<Element> dest = do_QueryInterface(aDest);
|
|
nsCOMPtr<Element> source = do_QueryInterface(aSource);
|
|
NS_ENSURE_TRUE(dest && source, NS_ERROR_NO_INTERFACE);
|
|
|
|
CloneAttributes(dest, source);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditor::CloneAttributes(Element* aDest, Element* aSource)
|
|
{
|
|
MOZ_ASSERT(aDest && aSource);
|
|
|
|
nsAutoEditBatch beginBatching(this);
|
|
|
|
// Use transaction system for undo only if destination is already in the
|
|
// document
|
|
NS_ENSURE_TRUE(GetRoot(), );
|
|
bool destInBody = GetRoot()->Contains(aDest);
|
|
|
|
// Clear existing attributes
|
|
nsRefPtr<nsDOMAttributeMap> destAttributes = aDest->Attributes();
|
|
while (nsRefPtr<Attr> attr = destAttributes->Item(0)) {
|
|
if (destInBody) {
|
|
RemoveAttribute(static_cast<nsIDOMElement*>(GetAsDOMNode(aDest)),
|
|
attr->NodeName());
|
|
} else {
|
|
ErrorResult ignored;
|
|
aDest->RemoveAttribute(attr->NodeName(), ignored);
|
|
}
|
|
}
|
|
|
|
// Set just the attributes that the source element has
|
|
nsRefPtr<nsDOMAttributeMap> sourceAttributes = aSource->Attributes();
|
|
uint32_t sourceCount = sourceAttributes->Length();
|
|
for (uint32_t i = 0; i < sourceCount; i++) {
|
|
nsRefPtr<Attr> attr = sourceAttributes->Item(i);
|
|
nsAutoString value;
|
|
attr->GetValue(value);
|
|
if (destInBody) {
|
|
SetAttributeOrEquivalent(static_cast<nsIDOMElement*>(GetAsDOMNode(aDest)),
|
|
attr->NodeName(), value, false);
|
|
} else {
|
|
// The element is not inserted in the document yet, we don't want to put
|
|
// a transaction on the UndoStack
|
|
SetAttributeOrEquivalent(static_cast<nsIDOMElement*>(GetAsDOMNode(aDest)),
|
|
attr->NodeName(), value, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::ScrollSelectionIntoView(bool aScrollToAnchor)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (NS_SUCCEEDED(GetSelectionController(getter_AddRefs(selCon))) && selCon)
|
|
{
|
|
int16_t region = nsISelectionController::SELECTION_FOCUS_REGION;
|
|
|
|
if (aScrollToAnchor)
|
|
region = nsISelectionController::SELECTION_ANCHOR_REGION;
|
|
|
|
selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
region, nsISelectionController::SCROLL_OVERFLOW_HIDDEN);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditor::FindBetterInsertionPoint(nsCOMPtr<nsINode>& aNode,
|
|
int32_t& aOffset)
|
|
{
|
|
if (aNode->IsNodeOfType(nsINode::eTEXT)) {
|
|
// There is no "better" insertion point.
|
|
return;
|
|
}
|
|
|
|
if (!IsPlaintextEditor()) {
|
|
// We cannot find "better" insertion point in HTML editor.
|
|
// WARNING: When you add some code to find better node in HTML editor,
|
|
// you need to call this before calling InsertTextImpl() in
|
|
// nsHTMLEditRules.
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> node = aNode;
|
|
int32_t offset = aOffset;
|
|
|
|
nsCOMPtr<nsINode> root = GetRoot();
|
|
if (aNode == root) {
|
|
// In some cases, aNode is the anonymous DIV, and offset is 0. To avoid
|
|
// injecting unneeded text nodes, we first look to see if we have one
|
|
// available. In that case, we'll just adjust node and offset accordingly.
|
|
if (offset == 0 && node->HasChildren() &&
|
|
node->GetFirstChild()->IsNodeOfType(nsINode::eTEXT)) {
|
|
aNode = node->GetFirstChild();
|
|
aOffset = 0;
|
|
return;
|
|
}
|
|
|
|
// In some other cases, aNode is the anonymous DIV, and offset points to the
|
|
// terminating mozBR. In that case, we'll adjust aInOutNode and
|
|
// aInOutOffset to the preceding text node, if any.
|
|
if (offset > 0 && node->GetChildAt(offset - 1) &&
|
|
node->GetChildAt(offset - 1)->IsNodeOfType(nsINode::eTEXT)) {
|
|
NS_ENSURE_TRUE_VOID(node->Length() <= INT32_MAX);
|
|
aNode = node->GetChildAt(offset - 1);
|
|
aOffset = static_cast<int32_t>(aNode->Length());
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Sometimes, aNode is the mozBR element itself. In that case, we'll adjust
|
|
// the insertion point to the previous text node, if one exists, or to the
|
|
// parent anonymous DIV.
|
|
if (nsTextEditUtils::IsMozBR(node) && !offset) {
|
|
if (node->GetPreviousSibling() &&
|
|
node->GetPreviousSibling()->IsNodeOfType(nsINode::eTEXT)) {
|
|
NS_ENSURE_TRUE_VOID(node->Length() <= INT32_MAX);
|
|
aNode = node->GetPreviousSibling();
|
|
aOffset = static_cast<int32_t>(aNode->Length());
|
|
return;
|
|
}
|
|
|
|
if (node->GetParentNode() && node->GetParentNode() == root) {
|
|
aNode = node->GetParentNode();
|
|
aOffset = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::InsertTextImpl(const nsAString& aStringToInsert,
|
|
nsCOMPtr<nsINode>* aInOutNode,
|
|
int32_t* aInOutOffset,
|
|
nsIDocument* aDoc)
|
|
{
|
|
// NOTE: caller *must* have already used nsAutoTxnsConserveSelection
|
|
// stack-based class to turn off txn selection updating. Caller also turned
|
|
// on rules sniffing if desired.
|
|
|
|
NS_ENSURE_TRUE(aInOutNode && *aInOutNode && aInOutOffset && aDoc,
|
|
NS_ERROR_NULL_POINTER);
|
|
|
|
if (!ShouldHandleIMEComposition() && aStringToInsert.IsEmpty()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// This method doesn't support over INT32_MAX length text since aInOutOffset
|
|
// is int32_t*.
|
|
CheckedInt<int32_t> lengthToInsert(aStringToInsert.Length());
|
|
NS_ENSURE_TRUE(lengthToInsert.isValid(), NS_ERROR_INVALID_ARG);
|
|
|
|
nsCOMPtr<nsINode> node = *aInOutNode;
|
|
int32_t offset = *aInOutOffset;
|
|
|
|
// In some cases, the node may be the anonymous div elemnt or a mozBR
|
|
// element. Let's try to look for better insertion point in the nearest
|
|
// text node if there is.
|
|
FindBetterInsertionPoint(node, offset);
|
|
|
|
nsresult res;
|
|
if (ShouldHandleIMEComposition()) {
|
|
CheckedInt<int32_t> newOffset;
|
|
if (!node->IsNodeOfType(nsINode::eTEXT)) {
|
|
// create a text node
|
|
nsRefPtr<nsTextNode> newNode = aDoc->CreateTextNode(EmptyString());
|
|
// then we insert it into the dom tree
|
|
res = InsertNode(*newNode, *node, offset);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
node = newNode;
|
|
offset = 0;
|
|
newOffset = lengthToInsert;
|
|
} else {
|
|
newOffset = lengthToInsert + offset;
|
|
NS_ENSURE_TRUE(newOffset.isValid(), NS_ERROR_FAILURE);
|
|
}
|
|
res = InsertTextIntoTextNodeImpl(aStringToInsert, *node->GetAsText(),
|
|
offset);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
offset = newOffset.value();
|
|
} else {
|
|
if (node->IsNodeOfType(nsINode::eTEXT)) {
|
|
CheckedInt<int32_t> newOffset = lengthToInsert + offset;
|
|
NS_ENSURE_TRUE(newOffset.isValid(), NS_ERROR_FAILURE);
|
|
// we are inserting text into an existing text node.
|
|
res = InsertTextIntoTextNodeImpl(aStringToInsert, *node->GetAsText(),
|
|
offset);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
offset = newOffset.value();
|
|
} else {
|
|
// we are inserting text into a non-text node. first we have to create a
|
|
// textnode (this also populates it with the text)
|
|
nsRefPtr<nsTextNode> newNode = aDoc->CreateTextNode(aStringToInsert);
|
|
// then we insert it into the dom tree
|
|
res = InsertNode(*newNode, *node, offset);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
node = newNode;
|
|
offset = lengthToInsert.value();
|
|
}
|
|
}
|
|
|
|
*aInOutNode = node;
|
|
*aInOutOffset = offset;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::InsertTextIntoTextNodeImpl(const nsAString& aStringToInsert,
|
|
Text& aTextNode,
|
|
int32_t aOffset, bool aSuppressIME)
|
|
{
|
|
nsRefPtr<EditTxn> txn;
|
|
bool isIMETransaction = false;
|
|
int32_t replacedOffset = 0;
|
|
int32_t replacedLength = 0;
|
|
// aSuppressIME is used when editor must insert text, yet this text is not
|
|
// part of the current IME operation. Example: adjusting whitespace around an
|
|
// IME insertion.
|
|
if (ShouldHandleIMEComposition() && !aSuppressIME) {
|
|
if (!mIMETextNode) {
|
|
mIMETextNode = &aTextNode;
|
|
mIMETextOffset = aOffset;
|
|
}
|
|
// Modify mPhonetic with raw text input clauses.
|
|
const TextRangeArray* ranges = mComposition->GetRanges();
|
|
for (uint32_t i = 0; i < (ranges ? ranges->Length() : 0); ++i) {
|
|
const TextRange& textRange = ranges->ElementAt(i);
|
|
if (!textRange.Length() ||
|
|
textRange.mRangeType != NS_TEXTRANGE_RAWINPUT) {
|
|
continue;
|
|
}
|
|
if (!mPhonetic) {
|
|
mPhonetic = new nsString();
|
|
}
|
|
nsAutoString stringToInsert(aStringToInsert);
|
|
stringToInsert.Mid(*mPhonetic,
|
|
textRange.mStartOffset, textRange.Length());
|
|
}
|
|
|
|
txn = CreateTxnForIMEText(aStringToInsert);
|
|
isIMETransaction = true;
|
|
// All characters of the composition string will be replaced with
|
|
// aStringToInsert. So, we need to emulate to remove the composition
|
|
// string.
|
|
replacedOffset = mIMETextOffset;
|
|
replacedLength = mIMETextLength;
|
|
mIMETextLength = aStringToInsert.Length();
|
|
} else {
|
|
txn = CreateTxnForInsertText(aStringToInsert, aTextNode, aOffset);
|
|
}
|
|
|
|
// Let listeners know what's up
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillInsertText(
|
|
static_cast<nsIDOMCharacterData*>(aTextNode.AsDOMNode()), aOffset,
|
|
aStringToInsert);
|
|
}
|
|
|
|
// XXX We may not need these view batches anymore. This is handled at a
|
|
// higher level now I believe.
|
|
BeginUpdateViewBatch();
|
|
nsresult res = DoTransaction(txn);
|
|
EndUpdateViewBatch();
|
|
|
|
if (replacedLength) {
|
|
mRangeUpdater.SelAdjDeleteText(
|
|
static_cast<nsIDOMCharacterData*>(aTextNode.AsDOMNode()),
|
|
replacedOffset, replacedLength);
|
|
}
|
|
mRangeUpdater.SelAdjInsertText(aTextNode, aOffset, aStringToInsert);
|
|
|
|
// let listeners know what happened
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidInsertText(
|
|
static_cast<nsIDOMCharacterData*>(aTextNode.AsDOMNode()),
|
|
aOffset, aStringToInsert, res);
|
|
}
|
|
|
|
// Added some cruft here for bug 43366. Layout was crashing because we left
|
|
// an empty text node lying around in the document. So I delete empty text
|
|
// nodes caused by IME. I have to mark the IME transaction as "fixed", which
|
|
// means that furure IME txns won't merge with it. This is because we don't
|
|
// want future IME txns trying to put their text into a node that is no
|
|
// longer in the document. This does not break undo/redo, because all these
|
|
// txns are wrapped in a parent PlaceHolder txn, and placeholder txns are
|
|
// already savvy to having multiple ime txns inside them.
|
|
|
|
// Delete empty IME text node if there is one
|
|
if (isIMETransaction && mIMETextNode) {
|
|
uint32_t len = mIMETextNode->Length();
|
|
if (!len) {
|
|
DeleteNode(mIMETextNode);
|
|
mIMETextNode = nullptr;
|
|
static_cast<IMETextTxn*>(txn.get())->MarkFixed();
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::SelectEntireDocument(Selection* aSelection)
|
|
{
|
|
if (!aSelection) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(GetRoot());
|
|
if (!rootElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
return aSelection->SelectAllChildren(rootElement);
|
|
}
|
|
|
|
|
|
nsINode*
|
|
nsEditor::GetFirstEditableNode(nsINode* aRoot)
|
|
{
|
|
MOZ_ASSERT(aRoot);
|
|
|
|
nsIContent* node = GetLeftmostChild(aRoot);
|
|
if (node && !IsEditable(node)) {
|
|
node = GetNextNode(node, /* aEditableNode = */ true);
|
|
}
|
|
|
|
return (node != aRoot) ? node : nullptr;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::NotifyDocumentListeners(TDocumentListenerNotification aNotificationType)
|
|
{
|
|
if (!mDocStateListeners.Length()) {
|
|
// Maybe there just aren't any.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTArray<OwningNonNull<nsIDocumentStateListener>>
|
|
listeners(mDocStateListeners);
|
|
nsresult rv = NS_OK;
|
|
|
|
switch (aNotificationType)
|
|
{
|
|
case eDocumentCreated:
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentCreated();
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case eDocumentToBeDestroyed:
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentWillBeDestroyed();
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case eDocumentStateChanged:
|
|
{
|
|
bool docIsDirty;
|
|
rv = GetDocumentModified(&docIsDirty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (static_cast<int8_t>(docIsDirty) == mDocDirtyState)
|
|
return NS_OK;
|
|
|
|
mDocDirtyState = docIsDirty;
|
|
|
|
for (auto& listener : listeners) {
|
|
rv = listener->NotifyDocumentStateChanged(mDocDirtyState);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
NS_NOTREACHED("Unknown notification");
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
already_AddRefed<InsertTextTxn>
|
|
nsEditor::CreateTxnForInsertText(const nsAString& aStringToInsert,
|
|
Text& aTextNode, int32_t aOffset)
|
|
{
|
|
nsRefPtr<InsertTextTxn> txn = new InsertTextTxn(aTextNode, aOffset,
|
|
aStringToInsert, *this);
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::DeleteText(nsGenericDOMDataNode& aCharData, uint32_t aOffset,
|
|
uint32_t aLength)
|
|
{
|
|
nsRefPtr<DeleteTextTxn> txn =
|
|
CreateTxnForDeleteText(aCharData, aOffset, aLength);
|
|
NS_ENSURE_STATE(txn);
|
|
|
|
nsAutoRules beginRulesSniffing(this, EditAction::deleteText, nsIEditor::ePrevious);
|
|
|
|
// Let listeners know what's up
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillDeleteText(
|
|
static_cast<nsIDOMCharacterData*>(GetAsDOMNode(&aCharData)), aOffset,
|
|
aLength);
|
|
}
|
|
|
|
nsresult res = DoTransaction(txn);
|
|
|
|
// Let listeners know what happened
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteText(
|
|
static_cast<nsIDOMCharacterData*>(GetAsDOMNode(&aCharData)), aOffset,
|
|
aLength, res);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
already_AddRefed<DeleteTextTxn>
|
|
nsEditor::CreateTxnForDeleteText(nsGenericDOMDataNode& aCharData,
|
|
uint32_t aOffset, uint32_t aLength)
|
|
{
|
|
nsRefPtr<DeleteTextTxn> txn =
|
|
new DeleteTextTxn(*this, aCharData, aOffset, aLength, &mRangeUpdater);
|
|
|
|
nsresult res = txn->Init();
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
return txn.forget();
|
|
}
|
|
|
|
already_AddRefed<SplitNodeTxn>
|
|
nsEditor::CreateTxnForSplitNode(nsIContent& aNode, uint32_t aOffset)
|
|
{
|
|
nsRefPtr<SplitNodeTxn> txn = new SplitNodeTxn(*this, aNode, aOffset);
|
|
return txn.forget();
|
|
}
|
|
|
|
already_AddRefed<JoinNodeTxn>
|
|
nsEditor::CreateTxnForJoinNode(nsINode& aLeftNode, nsINode& aRightNode)
|
|
{
|
|
nsRefPtr<JoinNodeTxn> txn = new JoinNodeTxn(*this, aLeftNode, aRightNode);
|
|
|
|
NS_ENSURE_SUCCESS(txn->CheckValidity(), nullptr);
|
|
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
// END nsEditor core implementation
|
|
|
|
|
|
// BEGIN nsEditor public helper methods
|
|
|
|
struct SavedRange {
|
|
nsRefPtr<Selection> mSelection;
|
|
nsCOMPtr<nsINode> mStartNode;
|
|
nsCOMPtr<nsINode> mEndNode;
|
|
int32_t mStartOffset;
|
|
int32_t mEndOffset;
|
|
};
|
|
|
|
nsresult
|
|
nsEditor::SplitNodeImpl(nsIContent& aExistingRightNode,
|
|
int32_t aOffset,
|
|
nsIContent& aNewLeftNode)
|
|
{
|
|
// Remember all selection points.
|
|
nsAutoTArray<SavedRange, 10> savedRanges;
|
|
for (size_t i = 0; i < nsISelectionController::NUM_SELECTIONTYPES - 1; ++i) {
|
|
SelectionType type(1 << i);
|
|
SavedRange range;
|
|
range.mSelection = GetSelection(type);
|
|
if (type == nsISelectionController::SELECTION_NORMAL) {
|
|
NS_ENSURE_TRUE(range.mSelection, NS_ERROR_NULL_POINTER);
|
|
} else if (!range.mSelection) {
|
|
// For non-normal selections, skip over the non-existing ones.
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t j = 0; j < range.mSelection->RangeCount(); ++j) {
|
|
nsRefPtr<nsRange> r = range.mSelection->GetRangeAt(j);
|
|
MOZ_ASSERT(r->IsPositioned());
|
|
range.mStartNode = r->GetStartParent();
|
|
range.mStartOffset = r->StartOffset();
|
|
range.mEndNode = r->GetEndParent();
|
|
range.mEndOffset = r->EndOffset();
|
|
|
|
savedRanges.AppendElement(range);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsINode> parent = aExistingRightNode.GetParentNode();
|
|
NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER);
|
|
|
|
ErrorResult rv;
|
|
parent->InsertBefore(aNewLeftNode, &aExistingRightNode, rv);
|
|
NS_ENSURE_TRUE(!rv.Failed(), rv.StealNSResult());
|
|
|
|
// Split the children between the two nodes. At this point,
|
|
// aExistingRightNode has all the children. Move all the children whose
|
|
// index is < aOffset to aNewLeftNode.
|
|
if (aOffset < 0) {
|
|
// This means move no children
|
|
return NS_OK;
|
|
}
|
|
|
|
// If it's a text node, just shuffle around some text
|
|
if (aExistingRightNode.GetAsText() && aNewLeftNode.GetAsText()) {
|
|
// Fix right node
|
|
nsAutoString leftText;
|
|
aExistingRightNode.GetAsText()->SubstringData(0, aOffset, leftText);
|
|
aExistingRightNode.GetAsText()->DeleteData(0, aOffset);
|
|
// Fix left node
|
|
aNewLeftNode.GetAsText()->SetData(leftText);
|
|
} else {
|
|
// Otherwise it's an interior node, so shuffle around the children. Go
|
|
// through list backwards so deletes don't interfere with the iteration.
|
|
nsCOMPtr<nsINodeList> childNodes = aExistingRightNode.ChildNodes();
|
|
for (int32_t i = aOffset - 1; i >= 0; i--) {
|
|
nsCOMPtr<nsIContent> childNode = childNodes->Item(i);
|
|
if (childNode) {
|
|
aExistingRightNode.RemoveChild(*childNode, rv);
|
|
if (!rv.Failed()) {
|
|
nsCOMPtr<nsIContent> firstChild = aNewLeftNode.GetFirstChild();
|
|
aNewLeftNode.InsertBefore(*childNode, firstChild, rv);
|
|
}
|
|
}
|
|
if (rv.Failed()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Handle selection
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
if (ps) {
|
|
ps->FlushPendingNotifications(Flush_Frames);
|
|
}
|
|
|
|
bool shouldSetSelection = GetShouldTxnSetSelection();
|
|
|
|
nsRefPtr<Selection> previousSelection;
|
|
for (size_t i = 0; i < savedRanges.Length(); ++i) {
|
|
// Adjust the selection if needed.
|
|
SavedRange& range = savedRanges[i];
|
|
|
|
// If we have not seen the selection yet, clear all of its ranges.
|
|
if (range.mSelection != previousSelection) {
|
|
nsresult rv = range.mSelection->RemoveAllRanges();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
previousSelection = range.mSelection;
|
|
}
|
|
|
|
if (shouldSetSelection &&
|
|
range.mSelection->Type() ==
|
|
nsISelectionController::SELECTION_NORMAL) {
|
|
// If the editor should adjust the selection, don't bother restoring
|
|
// the ranges for the normal selection here.
|
|
continue;
|
|
}
|
|
|
|
// Split the selection into existing node and new node.
|
|
if (range.mStartNode == &aExistingRightNode) {
|
|
if (range.mStartOffset < aOffset) {
|
|
range.mStartNode = &aNewLeftNode;
|
|
} else {
|
|
range.mStartOffset -= aOffset;
|
|
}
|
|
}
|
|
|
|
if (range.mEndNode == &aExistingRightNode) {
|
|
if (range.mEndOffset < aOffset) {
|
|
range.mEndNode = &aNewLeftNode;
|
|
} else {
|
|
range.mEndOffset -= aOffset;
|
|
}
|
|
}
|
|
|
|
nsRefPtr<nsRange> newRange;
|
|
nsresult rv = nsRange::CreateRange(range.mStartNode, range.mStartOffset,
|
|
range.mEndNode, range.mEndOffset,
|
|
getter_AddRefs(newRange));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = range.mSelection->AddRange(newRange);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (shouldSetSelection) {
|
|
// Editor wants us to set selection at split point.
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
selection->Collapse(&aNewLeftNode, aOffset);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodesImpl(nsINode* aNodeToKeep,
|
|
nsINode* aNodeToJoin,
|
|
nsINode* aParent)
|
|
{
|
|
MOZ_ASSERT(aNodeToKeep);
|
|
MOZ_ASSERT(aNodeToJoin);
|
|
MOZ_ASSERT(aParent);
|
|
|
|
uint32_t firstNodeLength = aNodeToJoin->Length();
|
|
|
|
int32_t joinOffset;
|
|
GetNodeLocation(aNodeToJoin, &joinOffset);
|
|
int32_t keepOffset;
|
|
nsINode* parent = GetNodeLocation(aNodeToKeep, &keepOffset);
|
|
|
|
// Remember all selection points.
|
|
nsAutoTArray<SavedRange, 10> savedRanges;
|
|
for (size_t i = 0; i < nsISelectionController::NUM_SELECTIONTYPES - 1; ++i) {
|
|
SelectionType type(1 << i);
|
|
SavedRange range;
|
|
range.mSelection = GetSelection(type);
|
|
if (type == nsISelectionController::SELECTION_NORMAL) {
|
|
NS_ENSURE_TRUE(range.mSelection, NS_ERROR_NULL_POINTER);
|
|
} else if (!range.mSelection) {
|
|
// For non-normal selections, skip over the non-existing ones.
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t j = 0; j < range.mSelection->RangeCount(); ++j) {
|
|
nsRefPtr<nsRange> r = range.mSelection->GetRangeAt(j);
|
|
MOZ_ASSERT(r->IsPositioned());
|
|
range.mStartNode = r->GetStartParent();
|
|
range.mStartOffset = r->StartOffset();
|
|
range.mEndNode = r->GetEndParent();
|
|
range.mEndOffset = r->EndOffset();
|
|
|
|
// If selection endpoint is between the nodes, remember it as being
|
|
// in the one that is going away instead. This simplifies later selection
|
|
// adjustment logic at end of this method.
|
|
if (range.mStartNode) {
|
|
if (range.mStartNode == parent &&
|
|
joinOffset < range.mStartOffset &&
|
|
range.mStartOffset <= keepOffset) {
|
|
range.mStartNode = aNodeToJoin;
|
|
range.mStartOffset = firstNodeLength;
|
|
}
|
|
if (range.mEndNode == parent &&
|
|
joinOffset < range.mEndOffset &&
|
|
range.mEndOffset <= keepOffset) {
|
|
range.mEndNode = aNodeToJoin;
|
|
range.mEndOffset = firstNodeLength;
|
|
}
|
|
}
|
|
|
|
savedRanges.AppendElement(range);
|
|
}
|
|
}
|
|
|
|
// OK, ready to do join now.
|
|
// If it's a text node, just shuffle around some text.
|
|
nsCOMPtr<nsIDOMCharacterData> keepNodeAsText( do_QueryInterface(aNodeToKeep) );
|
|
nsCOMPtr<nsIDOMCharacterData> joinNodeAsText( do_QueryInterface(aNodeToJoin) );
|
|
if (keepNodeAsText && joinNodeAsText) {
|
|
nsAutoString rightText;
|
|
nsAutoString leftText;
|
|
keepNodeAsText->GetData(rightText);
|
|
joinNodeAsText->GetData(leftText);
|
|
leftText += rightText;
|
|
keepNodeAsText->SetData(leftText);
|
|
} else {
|
|
// Otherwise it's an interior node, so shuffle around the children.
|
|
nsCOMPtr<nsINodeList> childNodes = aNodeToJoin->ChildNodes();
|
|
MOZ_ASSERT(childNodes);
|
|
|
|
// Remember the first child in aNodeToKeep, we'll insert all the children of aNodeToJoin in front of it
|
|
// GetFirstChild returns nullptr firstNode if aNodeToKeep has no children, that's OK.
|
|
nsCOMPtr<nsIContent> firstNode = aNodeToKeep->GetFirstChild();
|
|
|
|
// Have to go through the list backwards to keep deletes from interfering with iteration.
|
|
for (uint32_t i = childNodes->Length(); i > 0; --i) {
|
|
nsCOMPtr<nsIContent> childNode = childNodes->Item(i - 1);
|
|
if (childNode) {
|
|
// prepend children of aNodeToJoin
|
|
ErrorResult err;
|
|
aNodeToKeep->InsertBefore(*childNode, firstNode, err);
|
|
NS_ENSURE_TRUE(!err.Failed(), err.StealNSResult());
|
|
firstNode = childNode.forget();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete the extra node.
|
|
ErrorResult err;
|
|
aParent->RemoveChild(*aNodeToJoin, err);
|
|
|
|
bool shouldSetSelection = GetShouldTxnSetSelection();
|
|
|
|
nsRefPtr<Selection> previousSelection;
|
|
for (size_t i = 0; i < savedRanges.Length(); ++i) {
|
|
// And adjust the selection if needed.
|
|
SavedRange& range = savedRanges[i];
|
|
|
|
// If we have not seen the selection yet, clear all of its ranges.
|
|
if (range.mSelection != previousSelection) {
|
|
nsresult rv = range.mSelection->RemoveAllRanges();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
previousSelection = range.mSelection;
|
|
}
|
|
|
|
if (shouldSetSelection &&
|
|
range.mSelection->Type() ==
|
|
nsISelectionController::SELECTION_NORMAL) {
|
|
// If the editor should adjust the selection, don't bother restoring
|
|
// the ranges for the normal selection here.
|
|
continue;
|
|
}
|
|
|
|
// Check to see if we joined nodes where selection starts.
|
|
if (range.mStartNode == aNodeToJoin) {
|
|
range.mStartNode = aNodeToKeep;
|
|
} else if (range.mStartNode == aNodeToKeep) {
|
|
range.mStartOffset += firstNodeLength;
|
|
}
|
|
|
|
// Check to see if we joined nodes where selection ends.
|
|
if (range.mEndNode == aNodeToJoin) {
|
|
range.mEndNode = aNodeToKeep;
|
|
} else if (range.mEndNode == aNodeToKeep) {
|
|
range.mEndOffset += firstNodeLength;
|
|
}
|
|
|
|
nsRefPtr<nsRange> newRange;
|
|
nsresult rv = nsRange::CreateRange(range.mStartNode, range.mStartOffset,
|
|
range.mEndNode, range.mEndOffset,
|
|
getter_AddRefs(newRange));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = range.mSelection->AddRange(newRange);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (shouldSetSelection) {
|
|
// Editor wants us to set selection at join point.
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
selection->Collapse(aNodeToKeep, AssertedCast<int32_t>(firstNodeLength));
|
|
}
|
|
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
|
|
int32_t
|
|
nsEditor::GetChildOffset(nsIDOMNode* aChild, nsIDOMNode* aParent)
|
|
{
|
|
MOZ_ASSERT(aChild && aParent);
|
|
|
|
nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
|
|
nsCOMPtr<nsINode> child = do_QueryInterface(aChild);
|
|
MOZ_ASSERT(parent && child);
|
|
|
|
int32_t idx = parent->IndexOf(child);
|
|
MOZ_ASSERT(idx != -1);
|
|
return idx;
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<nsIDOMNode>
|
|
nsEditor::GetNodeLocation(nsIDOMNode* aChild, int32_t* outOffset)
|
|
{
|
|
MOZ_ASSERT(aChild && outOffset);
|
|
NS_ENSURE_TRUE(aChild && outOffset, nullptr);
|
|
*outOffset = -1;
|
|
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
|
|
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
|
|
aChild->GetParentNode(getter_AddRefs(parent))));
|
|
if (parent) {
|
|
*outOffset = GetChildOffset(aChild, parent);
|
|
}
|
|
|
|
return parent.forget();
|
|
}
|
|
|
|
nsINode*
|
|
nsEditor::GetNodeLocation(nsINode* aChild, int32_t* aOffset)
|
|
{
|
|
MOZ_ASSERT(aChild);
|
|
MOZ_ASSERT(aOffset);
|
|
|
|
nsINode* parent = aChild->GetParentNode();
|
|
if (parent) {
|
|
*aOffset = parent->IndexOf(aChild);
|
|
MOZ_ASSERT(*aOffset != -1);
|
|
} else {
|
|
*aOffset = -1;
|
|
}
|
|
return parent;
|
|
}
|
|
|
|
// returns the number of things inside aNode.
|
|
// If aNode is text, returns number of characters. If not, returns number of children nodes.
|
|
nsresult
|
|
nsEditor::GetLengthOfDOMNode(nsIDOMNode *aNode, uint32_t &aCount)
|
|
{
|
|
aCount = 0;
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
|
|
aCount = node->Length();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsIContent*
|
|
nsEditor::GetPriorNode(nsINode* aParentNode,
|
|
int32_t aOffset,
|
|
bool aEditableNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
MOZ_ASSERT(aParentNode);
|
|
|
|
// If we are at the beginning of the node, or it is a text node, then just
|
|
// look before it.
|
|
if (!aOffset || aParentNode->NodeType() == nsIDOMNode::TEXT_NODE) {
|
|
if (aNoBlockCrossing && IsBlockNode(aParentNode)) {
|
|
// If we aren't allowed to cross blocks, don't look before this block.
|
|
return nullptr;
|
|
}
|
|
return GetPriorNode(aParentNode, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
// else look before the child at 'aOffset'
|
|
if (nsIContent* child = aParentNode->GetChildAt(aOffset)) {
|
|
return GetPriorNode(child, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the deep-right child.
|
|
nsIContent* resultNode = GetRightmostChild(aParentNode, aNoBlockCrossing);
|
|
if (!resultNode || !aEditableNode || IsEditable(resultNode)) {
|
|
return resultNode;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return GetPriorNode(resultNode, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
|
|
nsIContent*
|
|
nsEditor::GetNextNode(nsINode* aParentNode,
|
|
int32_t aOffset,
|
|
bool aEditableNode,
|
|
bool aNoBlockCrossing)
|
|
{
|
|
MOZ_ASSERT(aParentNode);
|
|
|
|
// if aParentNode is a text node, use its location instead
|
|
if (aParentNode->NodeType() == nsIDOMNode::TEXT_NODE) {
|
|
nsINode* parent = aParentNode->GetParentNode();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
aOffset = parent->IndexOf(aParentNode) + 1; // _after_ the text node
|
|
aParentNode = parent;
|
|
}
|
|
|
|
// look at the child at 'aOffset'
|
|
nsIContent* child = aParentNode->GetChildAt(aOffset);
|
|
if (child) {
|
|
if (aNoBlockCrossing && IsBlockNode(child)) {
|
|
return child;
|
|
}
|
|
|
|
nsIContent* resultNode = GetLeftmostChild(child, aNoBlockCrossing);
|
|
if (!resultNode) {
|
|
return child;
|
|
}
|
|
|
|
if (!IsDescendantOfEditorRoot(resultNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aEditableNode || IsEditable(resultNode)) {
|
|
return resultNode;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return GetNextNode(resultNode, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the next one.
|
|
if (aNoBlockCrossing && IsBlockNode(aParentNode)) {
|
|
// don't cross out of parent block
|
|
return nullptr;
|
|
}
|
|
|
|
return GetNextNode(aParentNode, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
|
|
nsIContent*
|
|
nsEditor::GetPriorNode(nsINode* aCurrentNode, bool aEditableNode,
|
|
bool aNoBlockCrossing /* = false */)
|
|
{
|
|
MOZ_ASSERT(aCurrentNode);
|
|
|
|
if (!IsDescendantOfEditorRoot(aCurrentNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
return FindNode(aCurrentNode, false, aEditableNode, aNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::FindNextLeafNode(nsINode *aCurrentNode,
|
|
bool aGoForward,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
// called only by GetPriorNode so we don't need to check params.
|
|
NS_PRECONDITION(IsDescendantOfEditorRoot(aCurrentNode) &&
|
|
!IsEditorRoot(aCurrentNode),
|
|
"Bogus arguments");
|
|
|
|
nsINode* cur = aCurrentNode;
|
|
for (;;) {
|
|
// if aCurrentNode has a sibling in the right direction, return
|
|
// that sibling's closest child (or itself if it has no children)
|
|
nsIContent* sibling =
|
|
aGoForward ? cur->GetNextSibling() : cur->GetPreviousSibling();
|
|
if (sibling) {
|
|
if (bNoBlockCrossing && IsBlockNode(sibling)) {
|
|
// don't look inside prevsib, since it is a block
|
|
return sibling;
|
|
}
|
|
nsIContent *leaf =
|
|
aGoForward ? GetLeftmostChild(sibling, bNoBlockCrossing) :
|
|
GetRightmostChild(sibling, bNoBlockCrossing);
|
|
if (!leaf) {
|
|
return sibling;
|
|
}
|
|
|
|
return leaf;
|
|
}
|
|
|
|
nsINode *parent = cur->GetParentNode();
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ASSERTION(IsDescendantOfEditorRoot(parent),
|
|
"We started with a proper descendant of root, and should stop "
|
|
"if we ever hit the root, so we better have a descendant of "
|
|
"root now!");
|
|
if (IsEditorRoot(parent) ||
|
|
(bNoBlockCrossing && IsBlockNode(parent))) {
|
|
return nullptr;
|
|
}
|
|
|
|
cur = parent;
|
|
}
|
|
|
|
NS_NOTREACHED("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::GetNextNode(nsINode* aCurrentNode,
|
|
bool aEditableNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
MOZ_ASSERT(aCurrentNode);
|
|
|
|
if (!IsDescendantOfEditorRoot(aCurrentNode)) {
|
|
return nullptr;
|
|
}
|
|
|
|
return FindNode(aCurrentNode, true, aEditableNode, bNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::FindNode(nsINode *aCurrentNode,
|
|
bool aGoForward,
|
|
bool aEditableNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
if (IsEditorRoot(aCurrentNode)) {
|
|
// Don't allow traversal above the root node! This helps
|
|
// prevent us from accidentally editing browser content
|
|
// when the editor is in a text widget.
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> candidate =
|
|
FindNextLeafNode(aCurrentNode, aGoForward, bNoBlockCrossing);
|
|
|
|
if (!candidate) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aEditableNode || IsEditable(candidate)) {
|
|
return candidate;
|
|
}
|
|
|
|
return FindNode(candidate, aGoForward, aEditableNode, bNoBlockCrossing);
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::GetRightmostChild(nsINode *aCurrentNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
NS_ENSURE_TRUE(aCurrentNode, nullptr);
|
|
nsIContent *cur = aCurrentNode->GetLastChild();
|
|
if (!cur) {
|
|
return nullptr;
|
|
}
|
|
for (;;) {
|
|
if (bNoBlockCrossing && IsBlockNode(cur)) {
|
|
return cur;
|
|
}
|
|
nsIContent* next = cur->GetLastChild();
|
|
if (!next) {
|
|
return cur;
|
|
}
|
|
cur = next;
|
|
}
|
|
|
|
NS_NOTREACHED("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent*
|
|
nsEditor::GetLeftmostChild(nsINode *aCurrentNode,
|
|
bool bNoBlockCrossing)
|
|
{
|
|
NS_ENSURE_TRUE(aCurrentNode, nullptr);
|
|
nsIContent *cur = aCurrentNode->GetFirstChild();
|
|
if (!cur) {
|
|
return nullptr;
|
|
}
|
|
for (;;) {
|
|
if (bNoBlockCrossing && IsBlockNode(cur)) {
|
|
return cur;
|
|
}
|
|
nsIContent *next = cur->GetFirstChild();
|
|
if (!next) {
|
|
return cur;
|
|
}
|
|
cur = next;
|
|
}
|
|
|
|
NS_NOTREACHED("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsBlockNode(nsIDOMNode* aNode)
|
|
{
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
return IsBlockNode(node);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsBlockNode(nsINode* aNode)
|
|
{
|
|
// stub to be overridden in nsHTMLEditor.
|
|
// screwing around with the class hierarchy here in order
|
|
// to not duplicate the code in GetNextNode/GetPrevNode
|
|
// across both nsEditor/nsHTMLEditor.
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::CanContain(nsINode& aParent, nsIContent& aChild)
|
|
{
|
|
switch (aParent.NodeType()) {
|
|
case nsIDOMNode::ELEMENT_NODE:
|
|
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContain(*aParent.NodeInfo()->NameAtom(), aChild);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::CanContainTag(nsINode& aParent, nsIAtom& aChildTag)
|
|
{
|
|
switch (aParent.NodeType()) {
|
|
case nsIDOMNode::ELEMENT_NODE:
|
|
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContainTag(*aParent.NodeInfo()->NameAtom(), aChildTag);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::TagCanContain(nsIAtom& aParentTag, nsIContent& aChild)
|
|
{
|
|
switch (aChild.NodeType()) {
|
|
case nsIDOMNode::TEXT_NODE:
|
|
case nsIDOMNode::ELEMENT_NODE:
|
|
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
|
|
return TagCanContainTag(aParentTag, *aChild.NodeInfo()->NameAtom());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::TagCanContainTag(nsIAtom& aParentTag, nsIAtom& aChildTag)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsRoot(nsIDOMNode* inNode)
|
|
{
|
|
NS_ENSURE_TRUE(inNode, false);
|
|
|
|
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(GetRoot());
|
|
|
|
return inNode == rootNode;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsRoot(nsINode* inNode)
|
|
{
|
|
NS_ENSURE_TRUE(inNode, false);
|
|
|
|
nsCOMPtr<nsINode> rootNode = GetRoot();
|
|
|
|
return inNode == rootNode;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsEditorRoot(nsINode* aNode)
|
|
{
|
|
NS_ENSURE_TRUE(aNode, false);
|
|
nsCOMPtr<nsINode> rootNode = GetEditorRoot();
|
|
return aNode == rootNode;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsDescendantOfRoot(nsIDOMNode* inNode)
|
|
{
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(inNode);
|
|
return IsDescendantOfRoot(node);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsDescendantOfRoot(nsINode* inNode)
|
|
{
|
|
NS_ENSURE_TRUE(inNode, false);
|
|
nsCOMPtr<nsIContent> root = GetRoot();
|
|
NS_ENSURE_TRUE(root, false);
|
|
|
|
return nsContentUtils::ContentIsDescendantOf(inNode, root);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsDescendantOfEditorRoot(nsIDOMNode* aNode)
|
|
{
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
return IsDescendantOfEditorRoot(node);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsDescendantOfEditorRoot(nsINode* aNode)
|
|
{
|
|
NS_ENSURE_TRUE(aNode, false);
|
|
nsCOMPtr<nsIContent> root = GetEditorRoot();
|
|
NS_ENSURE_TRUE(root, false);
|
|
|
|
return nsContentUtils::ContentIsDescendantOf(aNode, root);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsContainer(nsINode* aNode)
|
|
{
|
|
return aNode ? true : false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsContainer(nsIDOMNode* aNode)
|
|
{
|
|
return aNode ? true : false;
|
|
}
|
|
|
|
static inline bool
|
|
IsElementVisible(dom::Element* aElement)
|
|
{
|
|
if (aElement->GetPrimaryFrame()) {
|
|
// It's visible, for our purposes
|
|
return true;
|
|
}
|
|
|
|
nsIContent *cur = aElement;
|
|
for (; ;) {
|
|
// Walk up the tree looking for the nearest ancestor with a frame.
|
|
// The state of the child right below it will determine whether
|
|
// we might possibly have a frame or not.
|
|
bool haveLazyBitOnChild = cur->HasFlag(NODE_NEEDS_FRAME);
|
|
cur = cur->GetFlattenedTreeParent();
|
|
if (!cur) {
|
|
if (!haveLazyBitOnChild) {
|
|
// None of our ancestors have lazy bits set, so we shouldn't
|
|
// have a frame
|
|
return false;
|
|
}
|
|
|
|
// The root has a lazy frame construction bit. We need to check
|
|
// our style.
|
|
break;
|
|
}
|
|
|
|
if (cur->GetPrimaryFrame()) {
|
|
if (!haveLazyBitOnChild) {
|
|
// Our ancestor directly under |cur| doesn't have lazy bits;
|
|
// that means we won't get a frame
|
|
return false;
|
|
}
|
|
|
|
if (cur->GetPrimaryFrame()->IsLeaf()) {
|
|
// Nothing under here will ever get frames
|
|
return false;
|
|
}
|
|
|
|
// Otherwise, we might end up with a frame when that lazy bit is
|
|
// processed. Figure out our actual style.
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Now it might be that we have no frame because we're in a
|
|
// display:none subtree, or it might be that we're just dealing with
|
|
// lazy frame construction and it hasn't happened yet. Check which
|
|
// one it is.
|
|
nsRefPtr<nsStyleContext> styleContext =
|
|
nsComputedDOMStyle::GetStyleContextForElementNoFlush(aElement,
|
|
nullptr, nullptr);
|
|
if (styleContext) {
|
|
return styleContext->StyleDisplay()->mDisplay != NS_STYLE_DISPLAY_NONE;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsEditable(nsIDOMNode *aNode)
|
|
{
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
return IsEditable(content);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsEditable(nsINode* aNode)
|
|
{
|
|
NS_ENSURE_TRUE(aNode, false);
|
|
|
|
if (!aNode->IsNodeOfType(nsINode::eCONTENT) || IsMozEditorBogusNode(aNode) ||
|
|
!IsModifiableNode(aNode)) {
|
|
return false;
|
|
}
|
|
|
|
// see if it has a frame. If so, we'll edit it.
|
|
// special case for textnodes: frame must have width.
|
|
if (aNode->IsElement() && !IsElementVisible(aNode->AsElement())) {
|
|
// If the element has no frame, it's not editable. Note that we
|
|
// need to check IsElement() here, because some of our tests
|
|
// rely on frameless textnodes being visible.
|
|
return false;
|
|
}
|
|
switch (aNode->NodeType()) {
|
|
case nsIDOMNode::ELEMENT_NODE:
|
|
case nsIDOMNode::TEXT_NODE:
|
|
return true; // element or text node; not invisible
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsMozEditorBogusNode(nsINode* element)
|
|
{
|
|
return element && element->IsElement() &&
|
|
element->AsElement()->AttrValueIs(kNameSpaceID_None,
|
|
kMOZEditorBogusNodeAttrAtom, kMOZEditorBogusNodeValue,
|
|
eCaseMatters);
|
|
}
|
|
|
|
uint32_t
|
|
nsEditor::CountEditableChildren(nsINode* aNode)
|
|
{
|
|
MOZ_ASSERT(aNode);
|
|
uint32_t count = 0;
|
|
for (nsIContent* child = aNode->GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
if (IsEditable(child)) {
|
|
++count;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
//END nsEditor static utility methods
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::IncrementModificationCount(int32_t inNumMods)
|
|
{
|
|
uint32_t oldModCount = mModCount;
|
|
|
|
mModCount += inNumMods;
|
|
|
|
if ((oldModCount == 0 && mModCount != 0)
|
|
|| (oldModCount != 0 && mModCount == 0))
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::GetModificationCount(int32_t *outModCount)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(outModCount);
|
|
*outModCount = mModCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::ResetModificationCount()
|
|
{
|
|
bool doNotify = (mModCount != 0);
|
|
|
|
mModCount = 0;
|
|
|
|
if (doNotify)
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
return NS_OK;
|
|
}
|
|
|
|
//END nsEditor Private methods
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetTag: digs out the atom for the tag of this node
|
|
//
|
|
nsIAtom *
|
|
nsEditor::GetTag(nsIDOMNode *aNode)
|
|
{
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
|
|
if (!content)
|
|
{
|
|
NS_ASSERTION(aNode, "null node passed to nsEditor::GetTag()");
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
return content->NodeInfo()->NameAtom();
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetTagString: digs out string for the tag of this node
|
|
//
|
|
nsresult
|
|
nsEditor::GetTagString(nsIDOMNode *aNode, nsAString& outString)
|
|
{
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to nsEditor::GetTagString()");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsIAtom *atom = GetTag(aNode);
|
|
if (!atom)
|
|
{
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
atom->ToString(outString);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// NodesSameType: do these nodes have the same tag?
|
|
//
|
|
bool
|
|
nsEditor::NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2)
|
|
{
|
|
if (!aNode1 || !aNode2) {
|
|
NS_NOTREACHED("null node passed to nsEditor::NodesSameType()");
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content1 = do_QueryInterface(aNode1);
|
|
NS_ENSURE_TRUE(content1, false);
|
|
|
|
nsCOMPtr<nsIContent> content2 = do_QueryInterface(aNode2);
|
|
NS_ENSURE_TRUE(content2, false);
|
|
|
|
return AreNodesSameType(content1, content2);
|
|
}
|
|
|
|
/* virtual */
|
|
bool
|
|
nsEditor::AreNodesSameType(nsIContent* aNode1, nsIContent* aNode2)
|
|
{
|
|
MOZ_ASSERT(aNode1);
|
|
MOZ_ASSERT(aNode2);
|
|
return aNode1->NodeInfo()->NameAtom() == aNode2->NodeInfo()->NameAtom();
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// IsTextNode: true if node of dom type text
|
|
//
|
|
bool
|
|
nsEditor::IsTextNode(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to IsTextNode()");
|
|
return false;
|
|
}
|
|
|
|
uint16_t nodeType;
|
|
aNode->GetNodeType(&nodeType);
|
|
return (nodeType == nsIDOMNode::TEXT_NODE);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsTextNode(nsINode *aNode)
|
|
{
|
|
return aNode->NodeType() == nsIDOMNode::TEXT_NODE;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetChildAt: returns the node at this position index in the parent
|
|
//
|
|
nsCOMPtr<nsIDOMNode>
|
|
nsEditor::GetChildAt(nsIDOMNode *aParent, int32_t aOffset)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
|
|
nsCOMPtr<nsIContent> parent = do_QueryInterface(aParent);
|
|
|
|
NS_ENSURE_TRUE(parent, resultNode);
|
|
|
|
resultNode = do_QueryInterface(parent->GetChildAt(aOffset));
|
|
|
|
return resultNode;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetNodeAtRangeOffsetPoint: returns the node at this position in a range,
|
|
// assuming that aParentOrNode is the node itself if it's a text node, or
|
|
// the node's parent otherwise.
|
|
//
|
|
nsCOMPtr<nsIDOMNode>
|
|
nsEditor::GetNodeAtRangeOffsetPoint(nsIDOMNode* aParentOrNode, int32_t aOffset)
|
|
{
|
|
if (IsTextNode(aParentOrNode)) {
|
|
return aParentOrNode;
|
|
}
|
|
return GetChildAt(aParentOrNode, aOffset);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetStartNodeAndOffset: returns whatever the start parent & offset is of
|
|
// the first range in the selection.
|
|
nsresult
|
|
nsEditor::GetStartNodeAndOffset(Selection* aSelection,
|
|
nsIDOMNode **outStartNode,
|
|
int32_t *outStartOffset)
|
|
{
|
|
NS_ENSURE_TRUE(outStartNode && outStartOffset && aSelection, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<nsINode> startNode;
|
|
nsresult rv = GetStartNodeAndOffset(aSelection, getter_AddRefs(startNode),
|
|
outStartOffset);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (startNode) {
|
|
NS_ADDREF(*outStartNode = startNode->AsDOMNode());
|
|
} else {
|
|
*outStartNode = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetStartNodeAndOffset(Selection* aSelection, nsINode** aStartNode,
|
|
int32_t* aStartOffset)
|
|
{
|
|
MOZ_ASSERT(aSelection);
|
|
MOZ_ASSERT(aStartNode);
|
|
MOZ_ASSERT(aStartOffset);
|
|
|
|
*aStartNode = nullptr;
|
|
*aStartOffset = 0;
|
|
|
|
NS_ENSURE_TRUE(aSelection->RangeCount(), NS_ERROR_FAILURE);
|
|
|
|
const nsRange* range = aSelection->GetRangeAt(0);
|
|
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
|
|
|
|
NS_ENSURE_TRUE(range->IsPositioned(), NS_ERROR_FAILURE);
|
|
|
|
NS_IF_ADDREF(*aStartNode = range->GetStartParent());
|
|
*aStartOffset = range->StartOffset();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetEndNodeAndOffset: returns whatever the end parent & offset is of
|
|
// the first range in the selection.
|
|
nsresult
|
|
nsEditor::GetEndNodeAndOffset(Selection* aSelection,
|
|
nsIDOMNode **outEndNode,
|
|
int32_t *outEndOffset)
|
|
{
|
|
NS_ENSURE_TRUE(outEndNode && outEndOffset && aSelection, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<nsINode> endNode;
|
|
nsresult rv = GetEndNodeAndOffset(aSelection, getter_AddRefs(endNode),
|
|
outEndOffset);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (endNode) {
|
|
NS_ADDREF(*outEndNode = endNode->AsDOMNode());
|
|
} else {
|
|
*outEndNode = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetEndNodeAndOffset(Selection* aSelection, nsINode** aEndNode,
|
|
int32_t* aEndOffset)
|
|
{
|
|
MOZ_ASSERT(aSelection);
|
|
MOZ_ASSERT(aEndNode);
|
|
MOZ_ASSERT(aEndOffset);
|
|
|
|
*aEndNode = nullptr;
|
|
*aEndOffset = 0;
|
|
|
|
NS_ENSURE_TRUE(aSelection->RangeCount(), NS_ERROR_FAILURE);
|
|
|
|
const nsRange* range = aSelection->GetRangeAt(0);
|
|
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
|
|
|
|
NS_ENSURE_TRUE(range->IsPositioned(), NS_ERROR_FAILURE);
|
|
|
|
NS_IF_ADDREF(*aEndNode = range->GetEndParent());
|
|
*aEndOffset = range->EndOffset();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// IsPreformatted: checks the style info for the node for the preformatted
|
|
// text style.
|
|
nsresult
|
|
nsEditor::IsPreformatted(nsIDOMNode *aNode, bool *aResult)
|
|
{
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
|
|
NS_ENSURE_TRUE(aResult && content, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// Look at the node (and its parent if it's not an element), and grab its style context
|
|
nsRefPtr<nsStyleContext> elementStyle;
|
|
if (!content->IsElement()) {
|
|
content = content->GetParent();
|
|
}
|
|
if (content && content->IsElement()) {
|
|
elementStyle = nsComputedDOMStyle::GetStyleContextForElementNoFlush(content->AsElement(),
|
|
nullptr,
|
|
ps);
|
|
}
|
|
|
|
if (!elementStyle)
|
|
{
|
|
// Consider nodes without a style context to be NOT preformatted:
|
|
// For instance, this is true of JS tags inside the body (which show
|
|
// up as #text nodes but have no style context).
|
|
*aResult = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
const nsStyleText* styleText = elementStyle->StyleText();
|
|
|
|
*aResult = styleText->WhiteSpaceIsSignificant();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// SplitNodeDeep: this splits a node "deeply", splitting children as
|
|
// appropriate. The place to split is represented by
|
|
// a dom point at {splitPointParent, splitPointOffset}.
|
|
// That dom point must be inside aNode, which is the node to
|
|
// split. outOffset is set to the offset in the parent of aNode where
|
|
// the split terminates - where you would want to insert
|
|
// a new element, for instance, if that's why you were splitting
|
|
// the node.
|
|
//
|
|
nsresult
|
|
nsEditor::SplitNodeDeep(nsIDOMNode *aNode,
|
|
nsIDOMNode *aSplitPointParent,
|
|
int32_t aSplitPointOffset,
|
|
int32_t *outOffset,
|
|
bool aNoEmptyContainers,
|
|
nsCOMPtr<nsIDOMNode> *outLeftNode,
|
|
nsCOMPtr<nsIDOMNode> *outRightNode)
|
|
{
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
NS_ENSURE_TRUE(node && aSplitPointParent && outOffset, NS_ERROR_NULL_POINTER);
|
|
int32_t offset = aSplitPointOffset;
|
|
|
|
if (outLeftNode) *outLeftNode = nullptr;
|
|
if (outRightNode) *outRightNode = nullptr;
|
|
|
|
nsCOMPtr<nsINode> nodeToSplit = do_QueryInterface(aSplitPointParent);
|
|
while (nodeToSplit) {
|
|
// need to insert rules code call here to do things like
|
|
// not split a list if you are after the last <li> or before the first, etc.
|
|
// for now we just have some smarts about unneccessarily splitting
|
|
// textnodes, which should be universal enough to put straight in
|
|
// this nsEditor routine.
|
|
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(nodeToSplit);
|
|
uint32_t len = nodeToSplit->Length();
|
|
bool bDoSplit = false;
|
|
|
|
if (!(aNoEmptyContainers || nodeAsText) || (offset && (offset != (int32_t)len)))
|
|
{
|
|
bDoSplit = true;
|
|
nsCOMPtr<nsIDOMNode> tempNode;
|
|
nsresult rv = SplitNode(nodeToSplit->AsDOMNode(), offset,
|
|
getter_AddRefs(tempNode));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (outRightNode) {
|
|
*outRightNode = nodeToSplit->AsDOMNode();
|
|
}
|
|
if (outLeftNode) {
|
|
*outLeftNode = tempNode;
|
|
}
|
|
}
|
|
|
|
nsINode* parentNode = nodeToSplit->GetParentNode();
|
|
NS_ENSURE_TRUE(parentNode, NS_ERROR_FAILURE);
|
|
|
|
if (!bDoSplit && offset) {
|
|
// must be "end of text node" case, we didn't split it, just move past it
|
|
offset = parentNode->IndexOf(nodeToSplit) + 1;
|
|
if (outLeftNode) {
|
|
*outLeftNode = nodeToSplit->AsDOMNode();
|
|
}
|
|
} else {
|
|
offset = parentNode->IndexOf(nodeToSplit);
|
|
if (outRightNode) {
|
|
*outRightNode = nodeToSplit->AsDOMNode();
|
|
}
|
|
}
|
|
|
|
if (nodeToSplit == node) {
|
|
// we split all the way up to (and including) aNode; we're done
|
|
break;
|
|
}
|
|
|
|
nodeToSplit = parentNode;
|
|
}
|
|
|
|
if (!nodeToSplit) {
|
|
NS_NOTREACHED("null node obtained in nsEditor::SplitNodeDeep()");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*outOffset = offset;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* This joins two like nodes "deeply", joining children as appropriate.
|
|
* Returns the point of the join, or (nullptr, -1) in case of error.
|
|
*/
|
|
::DOMPoint
|
|
nsEditor::JoinNodeDeep(nsIContent& aLeftNode, nsIContent& aRightNode)
|
|
{
|
|
// While the rightmost children and their descendants of the left node match
|
|
// the leftmost children and their descendants of the right node, join them
|
|
// up.
|
|
|
|
nsCOMPtr<nsIContent> leftNodeToJoin = &aLeftNode;
|
|
nsCOMPtr<nsIContent> rightNodeToJoin = &aRightNode;
|
|
nsCOMPtr<nsINode> parentNode = aRightNode.GetParentNode();
|
|
|
|
::DOMPoint ret;
|
|
|
|
while (leftNodeToJoin && rightNodeToJoin && parentNode &&
|
|
AreNodesSameType(leftNodeToJoin, rightNodeToJoin)) {
|
|
uint32_t length = leftNodeToJoin->Length();
|
|
|
|
ret.node = rightNodeToJoin;
|
|
ret.offset = length;
|
|
|
|
// Do the join
|
|
nsresult res = JoinNodes(*leftNodeToJoin, *rightNodeToJoin);
|
|
NS_ENSURE_SUCCESS(res, ::DOMPoint());
|
|
|
|
if (parentNode->GetAsText()) {
|
|
// We've joined all the way down to text nodes, we're done!
|
|
return ret;
|
|
}
|
|
|
|
// Get new left and right nodes, and begin anew
|
|
parentNode = rightNodeToJoin;
|
|
leftNodeToJoin = parentNode->GetChildAt(length - 1);
|
|
rightNodeToJoin = parentNode->GetChildAt(length);
|
|
|
|
// Skip over non-editable nodes
|
|
while (leftNodeToJoin && !IsEditable(leftNodeToJoin)) {
|
|
leftNodeToJoin = leftNodeToJoin->GetPreviousSibling();
|
|
}
|
|
if (!leftNodeToJoin) {
|
|
return ret;
|
|
}
|
|
|
|
while (rightNodeToJoin && !IsEditable(rightNodeToJoin)) {
|
|
rightNodeToJoin = rightNodeToJoin->GetNextSibling();
|
|
}
|
|
if (!rightNodeToJoin) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
nsEditor::BeginUpdateViewBatch()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount >= 0, "bad state");
|
|
|
|
if (0 == mUpdateCount)
|
|
{
|
|
// Turn off selection updates and notifications.
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
|
|
if (selection) {
|
|
selection->StartBatchChanges();
|
|
}
|
|
}
|
|
|
|
mUpdateCount++;
|
|
}
|
|
|
|
|
|
nsresult nsEditor::EndUpdateViewBatch()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount > 0, "bad state");
|
|
|
|
if (mUpdateCount <= 0)
|
|
{
|
|
mUpdateCount = 0;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mUpdateCount--;
|
|
|
|
if (0 == mUpdateCount)
|
|
{
|
|
// Turn selection updating and notifications back on.
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
if (selection) {
|
|
selection->EndBatchChanges();
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsEditor::GetShouldTxnSetSelection()
|
|
{
|
|
return mShouldTxnSetSelection;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelectionImpl(EDirection aAction,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_STATE(selection);
|
|
nsRefPtr<EditAggregateTxn> txn;
|
|
nsCOMPtr<nsINode> deleteNode;
|
|
int32_t deleteCharOffset = 0, deleteCharLength = 0;
|
|
nsresult res = CreateTxnForDeleteSelection(aAction, getter_AddRefs(txn),
|
|
getter_AddRefs(deleteNode),
|
|
&deleteCharOffset,
|
|
&deleteCharLength);
|
|
nsCOMPtr<nsIDOMCharacterData> deleteCharData(do_QueryInterface(deleteNode));
|
|
|
|
if (NS_SUCCEEDED(res))
|
|
{
|
|
nsAutoRules beginRulesSniffing(this, EditAction::deleteSelection, aAction);
|
|
// Notify nsIEditActionListener::WillDelete[Selection|Text|Node]
|
|
if (!deleteNode) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillDeleteSelection(selection);
|
|
}
|
|
} else if (deleteCharData) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillDeleteText(deleteCharData, deleteCharOffset, 1);
|
|
}
|
|
} else {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->WillDeleteNode(deleteNode->AsDOMNode());
|
|
}
|
|
}
|
|
|
|
// Delete the specified amount
|
|
res = DoTransaction(txn);
|
|
|
|
// Notify nsIEditActionListener::DidDelete[Selection|Text|Node]
|
|
if (!deleteNode) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteSelection(selection);
|
|
}
|
|
} else if (deleteCharData) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteText(deleteCharData, deleteCharOffset, 1, res);
|
|
}
|
|
} else {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteNode(deleteNode->AsDOMNode(), res);
|
|
}
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
nsEditor::DeleteSelectionAndCreateElement(nsIAtom& aTag)
|
|
{
|
|
nsresult res = DeleteSelectionAndPrepareToCreateNode();
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, nullptr);
|
|
|
|
nsCOMPtr<nsINode> node = selection->GetAnchorNode();
|
|
uint32_t offset = selection->AnchorOffset();
|
|
|
|
nsCOMPtr<Element> newElement = CreateNode(&aTag, node, offset);
|
|
|
|
// We want the selection to be just after the new node
|
|
res = selection->Collapse(node, offset + 1);
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
|
|
return newElement.forget();
|
|
}
|
|
|
|
|
|
/* Non-interface, protected methods */
|
|
|
|
TextComposition*
|
|
nsEditor::GetComposition() const
|
|
{
|
|
return mComposition;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsIMEComposing() const
|
|
{
|
|
return mComposition && mComposition->IsComposing();
|
|
}
|
|
|
|
bool
|
|
nsEditor::ShouldHandleIMEComposition() const
|
|
{
|
|
// When the editor is being reframed, the old value may be restored with
|
|
// InsertText(). In this time, the text should be inserted as not a part
|
|
// of the composition.
|
|
return mComposition && mDidPostCreate;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::DeleteSelectionAndPrepareToCreateNode()
|
|
{
|
|
nsresult res;
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
MOZ_ASSERT(selection->GetAnchorFocusRange());
|
|
|
|
if (!selection->GetAnchorFocusRange()->Collapsed()) {
|
|
res = DeleteSelection(nsIEditor::eNone, nsIEditor::eStrip);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
|
|
MOZ_ASSERT(selection->GetAnchorFocusRange() &&
|
|
selection->GetAnchorFocusRange()->Collapsed(),
|
|
"Selection not collapsed after delete");
|
|
}
|
|
|
|
// If the selection is a chardata node, split it if necessary and compute
|
|
// where to put the new node
|
|
nsCOMPtr<nsINode> node = selection->GetAnchorNode();
|
|
MOZ_ASSERT(node, "Selection has no ranges in it");
|
|
|
|
if (node && node->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
NS_ASSERTION(node->GetParentNode(),
|
|
"It's impossible to insert into chardata with no parent -- "
|
|
"fix the caller");
|
|
NS_ENSURE_STATE(node->GetParentNode());
|
|
|
|
uint32_t offset = selection->AnchorOffset();
|
|
|
|
if (offset == 0) {
|
|
res = selection->Collapse(node->GetParentNode(),
|
|
node->GetParentNode()->IndexOf(node));
|
|
MOZ_ASSERT(NS_SUCCEEDED(res));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
} else if (offset == node->Length()) {
|
|
res = selection->Collapse(node->GetParentNode(),
|
|
node->GetParentNode()->IndexOf(node) + 1);
|
|
MOZ_ASSERT(NS_SUCCEEDED(res));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
} else {
|
|
nsCOMPtr<nsIDOMNode> tmp;
|
|
res = SplitNode(node->AsDOMNode(), offset, getter_AddRefs(tmp));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
res = selection->Collapse(node->GetParentNode(),
|
|
node->GetParentNode()->IndexOf(node));
|
|
MOZ_ASSERT(NS_SUCCEEDED(res));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
nsEditor::DoAfterDoTransaction(nsITransaction *aTxn)
|
|
{
|
|
bool isTransientTransaction;
|
|
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
|
|
aTxn->GetIsTransient(&isTransientTransaction)));
|
|
|
|
if (!isTransientTransaction)
|
|
{
|
|
// we need to deal here with the case where the user saved after some
|
|
// edits, then undid one or more times. Then, the undo count is -ve,
|
|
// but we can't let a do take it back to zero. So we flip it up to
|
|
// a +ve number.
|
|
int32_t modCount;
|
|
GetModificationCount(&modCount);
|
|
if (modCount < 0)
|
|
modCount = -modCount;
|
|
|
|
// don't count transient transactions
|
|
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
|
|
IncrementModificationCount(1)));
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
nsEditor::DoAfterUndoTransaction()
|
|
{
|
|
// all undoable transactions are non-transient
|
|
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
|
|
IncrementModificationCount(-1)));
|
|
}
|
|
|
|
void
|
|
nsEditor::DoAfterRedoTransaction()
|
|
{
|
|
// all redoable transactions are non-transient
|
|
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
|
|
IncrementModificationCount(1)));
|
|
}
|
|
|
|
already_AddRefed<ChangeAttributeTxn>
|
|
nsEditor::CreateTxnForSetAttribute(Element& aElement, nsIAtom& aAttribute,
|
|
const nsAString& aValue)
|
|
{
|
|
nsRefPtr<ChangeAttributeTxn> txn =
|
|
new ChangeAttributeTxn(aElement, aAttribute, &aValue);
|
|
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
already_AddRefed<ChangeAttributeTxn>
|
|
nsEditor::CreateTxnForRemoveAttribute(Element& aElement, nsIAtom& aAttribute)
|
|
{
|
|
nsRefPtr<ChangeAttributeTxn> txn =
|
|
new ChangeAttributeTxn(aElement, aAttribute, nullptr);
|
|
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
already_AddRefed<CreateElementTxn>
|
|
nsEditor::CreateTxnForCreateElement(nsIAtom& aTag,
|
|
nsINode& aParent,
|
|
int32_t aPosition)
|
|
{
|
|
nsRefPtr<CreateElementTxn> txn =
|
|
new CreateElementTxn(*this, aTag, aParent, aPosition);
|
|
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
already_AddRefed<InsertNodeTxn>
|
|
nsEditor::CreateTxnForInsertNode(nsIContent& aNode,
|
|
nsINode& aParent,
|
|
int32_t aPosition)
|
|
{
|
|
nsRefPtr<InsertNodeTxn> txn = new InsertNodeTxn(aNode, aParent, aPosition,
|
|
*this);
|
|
return txn.forget();
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::CreateTxnForDeleteNode(nsINode* aNode, DeleteNodeTxn** aTxn)
|
|
{
|
|
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
|
|
|
|
nsRefPtr<DeleteNodeTxn> txn = new DeleteNodeTxn();
|
|
|
|
nsresult res = txn->Init(this, aNode, &mRangeUpdater);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
|
|
txn.forget(aTxn);
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<IMETextTxn>
|
|
nsEditor::CreateTxnForIMEText(const nsAString& aStringToInsert)
|
|
{
|
|
MOZ_ASSERT(mIMETextNode);
|
|
// During handling IME composition, mComposition must have been initialized.
|
|
// TODO: We can simplify IMETextTxn::Init() with TextComposition class.
|
|
nsRefPtr<IMETextTxn> txn = new IMETextTxn(*mIMETextNode, mIMETextOffset,
|
|
mIMETextLength,
|
|
mComposition->GetRanges(),
|
|
aStringToInsert, *this);
|
|
return txn.forget();
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForAddStyleSheet(CSSStyleSheet* aSheet, AddStyleSheetTxn* *aTxn)
|
|
{
|
|
nsRefPtr<AddStyleSheetTxn> txn = new AddStyleSheetTxn();
|
|
|
|
nsresult rv = txn->Init(this, aSheet);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
txn.forget(aTxn);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForRemoveStyleSheet(CSSStyleSheet* aSheet, RemoveStyleSheetTxn* *aTxn)
|
|
{
|
|
nsRefPtr<RemoveStyleSheetTxn> txn = new RemoveStyleSheetTxn();
|
|
|
|
nsresult rv = txn->Init(this, aSheet);
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
txn.forget(aTxn);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::CreateTxnForDeleteSelection(EDirection aAction,
|
|
EditAggregateTxn** aTxn,
|
|
nsINode** aNode,
|
|
int32_t* aOffset,
|
|
int32_t* aLength)
|
|
{
|
|
MOZ_ASSERT(aTxn);
|
|
*aTxn = nullptr;
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_STATE(selection);
|
|
|
|
// Check whether the selection is collapsed and we should do nothing:
|
|
if (selection->Collapsed() && aAction == eNone) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// allocate the out-param transaction
|
|
nsRefPtr<EditAggregateTxn> aggTxn = new EditAggregateTxn();
|
|
|
|
for (uint32_t rangeIdx = 0; rangeIdx < selection->RangeCount(); ++rangeIdx) {
|
|
nsRefPtr<nsRange> range = selection->GetRangeAt(rangeIdx);
|
|
NS_ENSURE_STATE(range);
|
|
|
|
// Same with range as with selection; if it is collapsed and action
|
|
// is eNone, do nothing.
|
|
if (!range->Collapsed()) {
|
|
nsRefPtr<DeleteRangeTxn> txn = new DeleteRangeTxn();
|
|
txn->Init(this, range, &mRangeUpdater);
|
|
aggTxn->AppendChild(txn);
|
|
} else if (aAction != eNone) {
|
|
// we have an insertion point. delete the thing in front of it or
|
|
// behind it, depending on aAction
|
|
nsresult res = CreateTxnForDeleteInsertionPoint(range, aAction, aggTxn,
|
|
aNode, aOffset, aLength);
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
}
|
|
}
|
|
|
|
aggTxn.forget(aTxn);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
already_AddRefed<DeleteTextTxn>
|
|
nsEditor::CreateTxnForDeleteCharacter(nsGenericDOMDataNode& aData,
|
|
uint32_t aOffset, EDirection aDirection)
|
|
{
|
|
NS_ASSERTION(aDirection == eNext || aDirection == ePrevious,
|
|
"Invalid direction");
|
|
nsAutoString data;
|
|
aData.GetData(data);
|
|
NS_ASSERTION(data.Length(), "Trying to delete from a zero-length node");
|
|
NS_ENSURE_TRUE(data.Length(), nullptr);
|
|
|
|
uint32_t segOffset = aOffset, segLength = 1;
|
|
if (aDirection == eNext) {
|
|
if (segOffset + 1 < data.Length() &&
|
|
NS_IS_HIGH_SURROGATE(data[segOffset]) &&
|
|
NS_IS_LOW_SURROGATE(data[segOffset+1])) {
|
|
// Delete both halves of the surrogate pair
|
|
++segLength;
|
|
}
|
|
} else if (aOffset > 0) {
|
|
--segOffset;
|
|
if (segOffset > 0 &&
|
|
NS_IS_LOW_SURROGATE(data[segOffset]) &&
|
|
NS_IS_HIGH_SURROGATE(data[segOffset-1])) {
|
|
++segLength;
|
|
--segOffset;
|
|
}
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
return CreateTxnForDeleteText(aData, segOffset, segLength);
|
|
}
|
|
|
|
//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior
|
|
//are not implemented
|
|
nsresult
|
|
nsEditor::CreateTxnForDeleteInsertionPoint(nsRange* aRange,
|
|
EDirection aAction,
|
|
EditAggregateTxn* aTxn,
|
|
nsINode** aNode,
|
|
int32_t* aOffset,
|
|
int32_t* aLength)
|
|
{
|
|
MOZ_ASSERT(aAction != eNone);
|
|
|
|
nsresult res;
|
|
|
|
// get the node and offset of the insertion point
|
|
nsCOMPtr<nsINode> node = aRange->GetStartParent();
|
|
NS_ENSURE_STATE(node);
|
|
|
|
int32_t offset = aRange->StartOffset();
|
|
|
|
// determine if the insertion point is at the beginning, middle, or end of
|
|
// the node
|
|
|
|
uint32_t count = node->Length();
|
|
|
|
bool isFirst = (0 == offset);
|
|
bool isLast = (count == (uint32_t)offset);
|
|
|
|
// XXX: if isFirst && isLast, then we'll need to delete the node
|
|
// as well as the 1 child
|
|
|
|
// build a transaction for deleting the appropriate data
|
|
// XXX: this has to come from rule section
|
|
if (aAction == ePrevious && isFirst) {
|
|
// we're backspacing from the beginning of the node. Delete the first
|
|
// thing to our left
|
|
nsCOMPtr<nsIContent> priorNode = GetPriorNode(node, true);
|
|
NS_ENSURE_STATE(priorNode);
|
|
|
|
// there is a priorNode, so delete its last child (if chardata, delete the
|
|
// last char). if it has no children, delete it
|
|
if (priorNode->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
nsRefPtr<nsGenericDOMDataNode> priorNodeAsCharData =
|
|
static_cast<nsGenericDOMDataNode*>(priorNode.get());
|
|
uint32_t length = priorNode->Length();
|
|
// Bail out for empty chardata XXX: Do we want to do something else?
|
|
NS_ENSURE_STATE(length);
|
|
nsRefPtr<DeleteTextTxn> txn =
|
|
CreateTxnForDeleteCharacter(*priorNodeAsCharData, length, ePrevious);
|
|
NS_ENSURE_STATE(txn);
|
|
|
|
*aOffset = txn->GetOffset();
|
|
*aLength = txn->GetNumCharsToDelete();
|
|
aTxn->AppendChild(txn);
|
|
} else {
|
|
// priorNode is not chardata, so tell its parent to delete it
|
|
nsRefPtr<DeleteNodeTxn> txn;
|
|
res = CreateTxnForDeleteNode(priorNode, getter_AddRefs(txn));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
|
|
NS_ADDREF(*aNode = priorNode);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aAction == eNext && isLast) {
|
|
// we're deleting from the end of the node. Delete the first thing to our
|
|
// right
|
|
nsCOMPtr<nsIContent> nextNode = GetNextNode(node, true);
|
|
NS_ENSURE_STATE(nextNode);
|
|
|
|
// there is a nextNode, so delete its first child (if chardata, delete the
|
|
// first char). if it has no children, delete it
|
|
if (nextNode->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
nsRefPtr<nsGenericDOMDataNode> nextNodeAsCharData =
|
|
static_cast<nsGenericDOMDataNode*>(nextNode.get());
|
|
uint32_t length = nextNode->Length();
|
|
// Bail out for empty chardata XXX: Do we want to do something else?
|
|
NS_ENSURE_STATE(length);
|
|
nsRefPtr<DeleteTextTxn> txn =
|
|
CreateTxnForDeleteCharacter(*nextNodeAsCharData, 0, eNext);
|
|
NS_ENSURE_STATE(txn);
|
|
|
|
*aOffset = txn->GetOffset();
|
|
*aLength = txn->GetNumCharsToDelete();
|
|
aTxn->AppendChild(txn);
|
|
} else {
|
|
// nextNode is not chardata, so tell its parent to delete it
|
|
nsRefPtr<DeleteNodeTxn> txn;
|
|
res = CreateTxnForDeleteNode(nextNode, getter_AddRefs(txn));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
|
|
NS_ADDREF(*aNode = nextNode);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
if (node->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
nsRefPtr<nsGenericDOMDataNode> nodeAsCharData =
|
|
static_cast<nsGenericDOMDataNode*>(node.get());
|
|
// we have chardata, so delete a char at the proper offset
|
|
nsRefPtr<DeleteTextTxn> txn = CreateTxnForDeleteCharacter(*nodeAsCharData,
|
|
offset, aAction);
|
|
NS_ENSURE_STATE(txn);
|
|
|
|
aTxn->AppendChild(txn);
|
|
NS_ADDREF(*aNode = node);
|
|
*aOffset = txn->GetOffset();
|
|
*aLength = txn->GetNumCharsToDelete();
|
|
} else {
|
|
// we're either deleting a node or chardata, need to dig into the next/prev
|
|
// node to find out
|
|
nsCOMPtr<nsINode> selectedNode;
|
|
if (aAction == ePrevious) {
|
|
selectedNode = GetPriorNode(node, offset, true);
|
|
} else if (aAction == eNext) {
|
|
selectedNode = GetNextNode(node, offset, true);
|
|
}
|
|
|
|
while (selectedNode &&
|
|
selectedNode->IsNodeOfType(nsINode::eDATA_NODE) &&
|
|
!selectedNode->Length()) {
|
|
// Can't delete an empty chardata node (bug 762183)
|
|
if (aAction == ePrevious) {
|
|
selectedNode = GetPriorNode(selectedNode, true);
|
|
} else if (aAction == eNext) {
|
|
selectedNode = GetNextNode(selectedNode, true);
|
|
}
|
|
}
|
|
NS_ENSURE_STATE(selectedNode);
|
|
|
|
if (selectedNode->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
nsRefPtr<nsGenericDOMDataNode> selectedNodeAsCharData =
|
|
static_cast<nsGenericDOMDataNode*>(selectedNode.get());
|
|
// we are deleting from a chardata node, so do a character deletion
|
|
uint32_t position = 0;
|
|
if (aAction == ePrevious) {
|
|
position = selectedNode->Length();
|
|
}
|
|
nsRefPtr<DeleteTextTxn> delTextTxn =
|
|
CreateTxnForDeleteCharacter(*selectedNodeAsCharData, position,
|
|
aAction);
|
|
NS_ENSURE_TRUE(delTextTxn, NS_ERROR_NULL_POINTER);
|
|
|
|
aTxn->AppendChild(delTextTxn);
|
|
*aOffset = delTextTxn->GetOffset();
|
|
*aLength = delTextTxn->GetNumCharsToDelete();
|
|
} else {
|
|
nsRefPtr<DeleteNodeTxn> delElementTxn;
|
|
res = CreateTxnForDeleteNode(selectedNode, getter_AddRefs(delElementTxn));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
NS_ENSURE_TRUE(delElementTxn, NS_ERROR_NULL_POINTER);
|
|
|
|
aTxn->AppendChild(delElementTxn);
|
|
}
|
|
|
|
NS_ADDREF(*aNode = selectedNode);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::CreateRange(nsIDOMNode *aStartParent, int32_t aStartOffset,
|
|
nsIDOMNode *aEndParent, int32_t aEndOffset,
|
|
nsRange** aRange)
|
|
{
|
|
return nsRange::CreateRange(aStartParent, aStartOffset, aEndParent,
|
|
aEndOffset, aRange);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::AppendNodeToSelectionAsRange(nsIDOMNode *aNode)
|
|
{
|
|
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsIDOMNode> parentNode;
|
|
nsresult res = aNode->GetParentNode(getter_AddRefs(parentNode));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
NS_ENSURE_TRUE(parentNode, NS_ERROR_NULL_POINTER);
|
|
|
|
int32_t offset = GetChildOffset(aNode, parentNode);
|
|
|
|
nsRefPtr<nsRange> range;
|
|
res = CreateRange(parentNode, offset, parentNode, offset+1, getter_AddRefs(range));
|
|
NS_ENSURE_SUCCESS(res, res);
|
|
NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER);
|
|
|
|
return selection->AddRange(range);
|
|
}
|
|
|
|
nsresult nsEditor::ClearSelection()
|
|
{
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
|
|
return selection->RemoveAllRanges();
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
nsEditor::CreateHTMLContent(nsIAtom* aTag)
|
|
{
|
|
MOZ_ASSERT(aTag);
|
|
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
// XXX Wallpaper over editor bug (editor tries to create elements with an
|
|
// empty nodename).
|
|
if (aTag == nsGkAtoms::_empty) {
|
|
NS_ERROR("Don't pass an empty tag to nsEditor::CreateHTMLContent, "
|
|
"check caller.");
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> ret;
|
|
nsresult res = doc->CreateElem(nsDependentAtomString(aTag), nullptr,
|
|
kNameSpaceID_XHTML, getter_AddRefs(ret));
|
|
NS_ENSURE_SUCCESS(res, nullptr);
|
|
return dont_AddRef(ret.forget().take()->AsElement());
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::SetAttributeOrEquivalent(nsIDOMElement * aElement,
|
|
const nsAString & aAttribute,
|
|
const nsAString & aValue,
|
|
bool aSuppressTransaction)
|
|
{
|
|
return SetAttribute(aElement, aAttribute, aValue);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::RemoveAttributeOrEquivalent(nsIDOMElement * aElement,
|
|
const nsAString & aAttribute,
|
|
bool aSuppressTransaction)
|
|
{
|
|
return RemoveAttribute(aElement, aAttribute);
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::HandleKeyPressEvent(nsIDOMKeyEvent* aKeyEvent)
|
|
{
|
|
// NOTE: When you change this method, you should also change:
|
|
// * editor/libeditor/tests/test_texteditor_keyevent_handling.html
|
|
// * editor/libeditor/tests/test_htmleditor_keyevent_handling.html
|
|
//
|
|
// And also when you add new key handling, you need to change the subclass's
|
|
// HandleKeyPressEvent()'s switch statement.
|
|
|
|
WidgetKeyboardEvent* nativeKeyEvent =
|
|
aKeyEvent->GetInternalNSEvent()->AsKeyboardEvent();
|
|
NS_ENSURE_TRUE(nativeKeyEvent, NS_ERROR_UNEXPECTED);
|
|
NS_ASSERTION(nativeKeyEvent->message == NS_KEY_PRESS,
|
|
"HandleKeyPressEvent gets non-keypress event");
|
|
|
|
// if we are readonly or disabled, then do nothing.
|
|
if (IsReadonly() || IsDisabled()) {
|
|
// consume backspace for disabled and readonly textfields, to prevent
|
|
// back in history, which could be confusing to users
|
|
if (nativeKeyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_BACK_SPACE) {
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
switch (nativeKeyEvent->keyCode) {
|
|
case nsIDOMKeyEvent::DOM_VK_META:
|
|
case nsIDOMKeyEvent::DOM_VK_WIN:
|
|
case nsIDOMKeyEvent::DOM_VK_SHIFT:
|
|
case nsIDOMKeyEvent::DOM_VK_CONTROL:
|
|
case nsIDOMKeyEvent::DOM_VK_ALT:
|
|
aKeyEvent->PreventDefault(); // consumed
|
|
return NS_OK;
|
|
case nsIDOMKeyEvent::DOM_VK_BACK_SPACE:
|
|
if (nativeKeyEvent->IsControl() || nativeKeyEvent->IsAlt() ||
|
|
nativeKeyEvent->IsMeta() || nativeKeyEvent->IsOS()) {
|
|
return NS_OK;
|
|
}
|
|
DeleteSelection(nsIEditor::ePrevious, nsIEditor::eStrip);
|
|
aKeyEvent->PreventDefault(); // consumed
|
|
return NS_OK;
|
|
case nsIDOMKeyEvent::DOM_VK_DELETE:
|
|
// on certain platforms (such as windows) the shift key
|
|
// modifies what delete does (cmd_cut in this case).
|
|
// bailing here to allow the keybindings to do the cut.
|
|
if (nativeKeyEvent->IsShift() || nativeKeyEvent->IsControl() ||
|
|
nativeKeyEvent->IsAlt() || nativeKeyEvent->IsMeta() ||
|
|
nativeKeyEvent->IsOS()) {
|
|
return NS_OK;
|
|
}
|
|
DeleteSelection(nsIEditor::eNext, nsIEditor::eStrip);
|
|
aKeyEvent->PreventDefault(); // consumed
|
|
return NS_OK;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::HandleInlineSpellCheck(EditAction action,
|
|
Selection* aSelection,
|
|
nsIDOMNode *previousSelectedNode,
|
|
int32_t previousSelectedOffset,
|
|
nsIDOMNode *aStartNode,
|
|
int32_t aStartOffset,
|
|
nsIDOMNode *aEndNode,
|
|
int32_t aEndOffset)
|
|
{
|
|
// Have to cast action here because this method is from an IDL
|
|
return mInlineSpellChecker ? mInlineSpellChecker->SpellCheckAfterEditorChange(
|
|
(int32_t)action, aSelection,
|
|
previousSelectedNode, previousSelectedOffset,
|
|
aStartNode, aStartOffset, aEndNode,
|
|
aEndOffset)
|
|
: NS_OK;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsEditor::FindSelectionRoot(nsINode *aNode)
|
|
{
|
|
nsCOMPtr<nsIContent> rootContent = GetRoot();
|
|
return rootContent.forget();
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::InitializeSelection(nsIDOMEventTarget* aFocusEventTarget)
|
|
{
|
|
nsCOMPtr<nsINode> targetNode = do_QueryInterface(aFocusEventTarget);
|
|
NS_ENSURE_TRUE(targetNode, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsIContent> selectionRootContent = FindSelectionRoot(targetNode);
|
|
if (!selectionRootContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
bool isTargetDoc =
|
|
targetNode->NodeType() == nsIDOMNode::DOCUMENT_NODE &&
|
|
targetNode->HasFlag(NODE_IS_EDITABLE);
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_STATE(selection);
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsresult rv = GetSelectionController(getter_AddRefs(selCon));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Init the caret
|
|
nsRefPtr<nsCaret> caret = presShell->GetCaret();
|
|
NS_ENSURE_TRUE(caret, NS_ERROR_UNEXPECTED);
|
|
caret->SetIgnoreUserModify(false);
|
|
caret->SetSelection(selection);
|
|
selCon->SetCaretReadOnly(IsReadonly());
|
|
selCon->SetCaretEnabled(true);
|
|
|
|
// Init selection
|
|
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
selCon->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);
|
|
selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL);
|
|
// If the computed selection root isn't root content, we should set it
|
|
// as selection ancestor limit. However, if that is root element, it means
|
|
// there is not limitation of the selection, then, we must set nullptr.
|
|
// NOTE: If we set a root element to the ancestor limit, some selection
|
|
// methods don't work fine.
|
|
if (selectionRootContent->GetParent()) {
|
|
selection->SetAncestorLimiter(selectionRootContent);
|
|
} else {
|
|
selection->SetAncestorLimiter(nullptr);
|
|
}
|
|
|
|
// XXX What case needs this?
|
|
if (isTargetDoc) {
|
|
int32_t rangeCount;
|
|
selection->GetRangeCount(&rangeCount);
|
|
if (rangeCount == 0) {
|
|
BeginningOfDocument();
|
|
}
|
|
}
|
|
|
|
// If there is composition when this is called, we may need to restore IME
|
|
// selection because if the editor is reframed, this already forgot IME
|
|
// selection and the transaction.
|
|
if (mComposition && !mIMETextNode && mIMETextLength) {
|
|
// We need to look for the new mIMETextNode from current selection.
|
|
// XXX If selection is changed during reframe, this doesn't work well!
|
|
nsRange* firstRange = selection->GetRangeAt(0);
|
|
NS_ENSURE_TRUE(firstRange, NS_ERROR_FAILURE);
|
|
nsCOMPtr<nsINode> startNode = firstRange->GetStartParent();
|
|
int32_t startOffset = firstRange->StartOffset();
|
|
FindBetterInsertionPoint(startNode, startOffset);
|
|
Text* textNode = startNode->GetAsText();
|
|
MOZ_ASSERT(textNode,
|
|
"There must be text node if mIMETextLength is larger than 0");
|
|
if (textNode) {
|
|
MOZ_ASSERT(textNode->Length() >= mIMETextOffset + mIMETextLength,
|
|
"The text node must be different from the old mIMETextNode");
|
|
IMETextTxn::SetIMESelection(*this, textNode, mIMETextOffset,
|
|
mIMETextLength, mComposition->GetRanges());
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::FinalizeSelection()
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsresult rv = GetSelectionController(getter_AddRefs(selCon));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsRefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_STATE(selection);
|
|
|
|
selection->SetAncestorLimiter(nullptr);
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
selCon->SetCaretEnabled(false);
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, NS_ERROR_NOT_INITIALIZED);
|
|
fm->UpdateCaretForCaretBrowsingMode();
|
|
|
|
if (!HasIndependentSelection()) {
|
|
// If this editor doesn't have an independent selection, i.e., it must
|
|
// mean that it is an HTML editor, the selection controller is shared with
|
|
// presShell. So, even this editor loses focus, other part of the document
|
|
// may still have focus.
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
ErrorResult ret;
|
|
if (!doc || !doc->HasFocus(ret)) {
|
|
// If the document already lost focus, mark the selection as disabled.
|
|
selCon->SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
|
|
} else {
|
|
// Otherwise, mark selection as normal because outside of a
|
|
// contenteditable element should be selected with normal selection
|
|
// color after here.
|
|
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
}
|
|
} else if (IsFormWidget() || IsPasswordEditor() ||
|
|
IsReadonly() || IsDisabled() || IsInputFiltered()) {
|
|
// In <input> or <textarea>, the independent selection should be hidden
|
|
// while this editor doesn't have focus.
|
|
selCon->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
} else {
|
|
// Otherwise, although we're not sure how this case happens, the
|
|
// independent selection should be marked as disabled.
|
|
selCon->SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
|
|
}
|
|
|
|
selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL);
|
|
return NS_OK;
|
|
}
|
|
|
|
dom::Element *
|
|
nsEditor::GetRoot()
|
|
{
|
|
if (!mRootElement)
|
|
{
|
|
nsCOMPtr<nsIDOMElement> root;
|
|
|
|
// Let GetRootElement() do the work
|
|
GetRootElement(getter_AddRefs(root));
|
|
}
|
|
|
|
return mRootElement;
|
|
}
|
|
|
|
dom::Element*
|
|
nsEditor::GetEditorRoot()
|
|
{
|
|
return GetRoot();
|
|
}
|
|
|
|
Element*
|
|
nsEditor::GetExposedRoot()
|
|
{
|
|
Element* rootElement = GetRoot();
|
|
|
|
// For plaintext editors, we need to ask the input/textarea element directly.
|
|
if (rootElement && rootElement->IsRootOfNativeAnonymousSubtree()) {
|
|
rootElement = rootElement->GetParent()->AsElement();
|
|
}
|
|
|
|
return rootElement;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::DetermineCurrentDirection()
|
|
{
|
|
// Get the current root direction from its frame
|
|
nsIContent* rootElement = GetExposedRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_FAILURE);
|
|
|
|
// If we don't have an explicit direction, determine our direction
|
|
// from the content's direction
|
|
if (!(mFlags & (nsIPlaintextEditor::eEditorLeftToRight |
|
|
nsIPlaintextEditor::eEditorRightToLeft))) {
|
|
|
|
nsIFrame* frame = rootElement->GetPrimaryFrame();
|
|
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
|
|
|
|
// Set the flag here, to enable us to use the same code path below.
|
|
// It will be flipped before returning from the function.
|
|
if (frame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
|
|
} else {
|
|
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SwitchTextDirection()
|
|
{
|
|
// Get the current root direction from its frame
|
|
nsIContent* rootElement = GetExposedRoot();
|
|
|
|
nsresult rv = DetermineCurrentDirection();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Apply the opposite direction
|
|
if (mFlags & nsIPlaintextEditor::eEditorRightToLeft) {
|
|
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorLeftToRight),
|
|
"Unexpected mutually exclusive flag");
|
|
mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
|
|
rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("ltr"), true);
|
|
} else if (mFlags & nsIPlaintextEditor::eEditorLeftToRight) {
|
|
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorRightToLeft),
|
|
"Unexpected mutually exclusive flag");
|
|
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
|
|
rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("rtl"), true);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
FireInputEvent();
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsEditor::SwitchTextDirectionTo(uint32_t aDirection)
|
|
{
|
|
// Get the current root direction from its frame
|
|
nsIContent* rootElement = GetExposedRoot();
|
|
|
|
nsresult rv = DetermineCurrentDirection();
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
// Apply the requested direction
|
|
if (aDirection == nsIPlaintextEditor::eEditorLeftToRight &&
|
|
(mFlags & nsIPlaintextEditor::eEditorRightToLeft)) {
|
|
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorLeftToRight),
|
|
"Unexpected mutually exclusive flag");
|
|
mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
|
|
rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("ltr"), true);
|
|
} else if (aDirection == nsIPlaintextEditor::eEditorRightToLeft &&
|
|
(mFlags & nsIPlaintextEditor::eEditorLeftToRight)) {
|
|
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorRightToLeft),
|
|
"Unexpected mutually exclusive flag");
|
|
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
|
|
mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
|
|
rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("rtl"), true);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
FireInputEvent();
|
|
}
|
|
}
|
|
|
|
#if DEBUG_JOE
|
|
void
|
|
nsEditor::DumpNode(nsIDOMNode *aNode, int32_t indent)
|
|
{
|
|
int32_t i;
|
|
for (i=0; i<indent; i++)
|
|
printf(" ");
|
|
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
|
|
nsCOMPtr<nsIDOMDocumentFragment> docfrag = do_QueryInterface(aNode);
|
|
|
|
if (element || docfrag)
|
|
{
|
|
if (element)
|
|
{
|
|
nsAutoString tag;
|
|
element->GetTagName(tag);
|
|
printf("<%s>\n", NS_LossyConvertUTF16toASCII(tag).get());
|
|
}
|
|
else
|
|
{
|
|
printf("<document fragment>\n");
|
|
}
|
|
nsCOMPtr<nsIDOMNodeList> childList;
|
|
aNode->GetChildNodes(getter_AddRefs(childList));
|
|
NS_ENSURE_TRUE(childList, NS_ERROR_NULL_POINTER);
|
|
uint32_t numChildren;
|
|
childList->GetLength(&numChildren);
|
|
nsCOMPtr<nsIDOMNode> child, tmp;
|
|
aNode->GetFirstChild(getter_AddRefs(child));
|
|
for (i=0; i<numChildren; i++)
|
|
{
|
|
DumpNode(child, indent+1);
|
|
child->GetNextSibling(getter_AddRefs(tmp));
|
|
child = tmp;
|
|
}
|
|
}
|
|
else if (IsTextNode(aNode))
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData> textNode = do_QueryInterface(aNode);
|
|
nsAutoString str;
|
|
textNode->GetData(str);
|
|
nsAutoCString cstr;
|
|
LossyCopyUTF16toASCII(str, cstr);
|
|
cstr.ReplaceChar('\n', ' ');
|
|
printf("<textnode> %s\n", cstr.get());
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
nsEditor::IsModifiableNode(nsIDOMNode *aNode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsModifiableNode(nsINode *aNode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsEditor::GetFocusedContent()
|
|
{
|
|
nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
|
|
if (!piTarget) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, nullptr);
|
|
|
|
nsCOMPtr<nsIContent> content = fm->GetFocusedContent();
|
|
return SameCOMIdentity(content, piTarget) ? content.forget() : nullptr;
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsEditor::GetFocusedContentForIME()
|
|
{
|
|
return GetFocusedContent();
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsActiveInDOMWindow()
|
|
{
|
|
nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
|
|
if (!piTarget) {
|
|
return false;
|
|
}
|
|
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, false);
|
|
|
|
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
|
|
nsPIDOMWindow* ourWindow = doc->GetWindow();
|
|
nsCOMPtr<nsPIDOMWindow> win;
|
|
nsIContent* content =
|
|
nsFocusManager::GetFocusedDescendant(ourWindow, false,
|
|
getter_AddRefs(win));
|
|
return SameCOMIdentity(content, piTarget);
|
|
}
|
|
|
|
bool
|
|
nsEditor::IsAcceptableInputEvent(nsIDOMEvent* aEvent)
|
|
{
|
|
// If the event is trusted, the event should always cause input.
|
|
NS_ENSURE_TRUE(aEvent, false);
|
|
|
|
WidgetEvent* widgetEvent = aEvent->GetInternalNSEvent();
|
|
if (NS_WARN_IF(!widgetEvent)) {
|
|
return false;
|
|
}
|
|
|
|
// If this is dispatched by using cordinates but this editor doesn't have
|
|
// focus, we shouldn't handle it.
|
|
if (widgetEvent->IsUsingCoordinates()) {
|
|
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
|
|
if (!focusedContent) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// If a composition event isn't dispatched via widget, we need to ignore them
|
|
// since they cannot be managed by TextComposition. E.g., the event was
|
|
// created by chrome JS.
|
|
// Note that if we allow to handle such events, editor may be confused by
|
|
// strange event order.
|
|
bool needsWidget = false;
|
|
WidgetGUIEvent* widgetGUIEvent = nullptr;
|
|
switch (widgetEvent->message) {
|
|
case NS_USER_DEFINED_EVENT:
|
|
// If events are not created with proper event interface, their message
|
|
// are initialized with NS_USER_DEFINED_EVENT. Let's ignore such event.
|
|
return false;
|
|
case NS_COMPOSITION_START:
|
|
case NS_COMPOSITION_END:
|
|
case NS_COMPOSITION_UPDATE:
|
|
case NS_COMPOSITION_CHANGE:
|
|
case NS_COMPOSITION_COMMIT_AS_IS:
|
|
// Don't allow composition events whose internal event are not
|
|
// WidgetCompositionEvent.
|
|
widgetGUIEvent = aEvent->GetInternalNSEvent()->AsCompositionEvent();
|
|
needsWidget = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (needsWidget &&
|
|
(!widgetGUIEvent || !widgetGUIEvent->widget)) {
|
|
return false;
|
|
}
|
|
|
|
// Accept all trusted events.
|
|
if (widgetEvent->mFlags.mIsTrusted) {
|
|
return true;
|
|
}
|
|
|
|
// Ignore untrusted mouse event.
|
|
// XXX Why are we handling other untrusted input events?
|
|
if (widgetEvent->AsMouseEventBase()) {
|
|
return false;
|
|
}
|
|
|
|
// Otherwise, we shouldn't handle any input events when we're not an active
|
|
// element of the DOM window.
|
|
return IsActiveInDOMWindow();
|
|
}
|
|
|
|
void
|
|
nsEditor::OnFocus(nsIDOMEventTarget* aFocusEventTarget)
|
|
{
|
|
InitializeSelection(aFocusEventTarget);
|
|
if (mInlineSpellChecker) {
|
|
mInlineSpellChecker->UpdateCurrentDictionary();
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetSuppressDispatchingInputEvent(bool *aSuppressed)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aSuppressed);
|
|
*aSuppressed = !mDispatchInputEvent;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetSuppressDispatchingInputEvent(bool aSuppress)
|
|
{
|
|
mDispatchInputEvent = !aSuppress;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetIsInEditAction(bool* aIsInEditAction)
|
|
{
|
|
MOZ_ASSERT(aIsInEditAction, "aIsInEditAction must not be null");
|
|
*aIsInEditAction = mIsInEditAction;
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t
|
|
nsEditor::GetIMESelectionStartOffsetIn(nsINode* aTextNode)
|
|
{
|
|
MOZ_ASSERT(aTextNode, "aTextNode must not be nullptr");
|
|
|
|
nsCOMPtr<nsISelectionController> selectionController;
|
|
nsresult rv = GetSelectionController(getter_AddRefs(selectionController));
|
|
NS_ENSURE_SUCCESS(rv, -1);
|
|
NS_ENSURE_TRUE(selectionController, -1);
|
|
|
|
int32_t minOffset = INT32_MAX;
|
|
static const SelectionType kIMESelectionTypes[] = {
|
|
nsISelectionController::SELECTION_IME_RAWINPUT,
|
|
nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT,
|
|
nsISelectionController::SELECTION_IME_CONVERTEDTEXT,
|
|
nsISelectionController::SELECTION_IME_SELECTEDCONVERTEDTEXT
|
|
};
|
|
for (auto selectionType : kIMESelectionTypes) {
|
|
nsRefPtr<Selection> selection = GetSelection(selectionType);
|
|
if (!selection) {
|
|
continue;
|
|
}
|
|
for (uint32_t i = 0; i < selection->RangeCount(); i++) {
|
|
nsRefPtr<nsRange> range = selection->GetRangeAt(i);
|
|
if (NS_WARN_IF(!range)) {
|
|
continue;
|
|
}
|
|
if (NS_WARN_IF(range->GetStartParent() != aTextNode)) {
|
|
// ignore the start offset...
|
|
} else {
|
|
MOZ_ASSERT(range->StartOffset() >= 0,
|
|
"start offset shouldn't be negative");
|
|
minOffset = std::min(minOffset, range->StartOffset());
|
|
}
|
|
if (NS_WARN_IF(range->GetEndParent() != aTextNode)) {
|
|
// ignore the end offset...
|
|
} else {
|
|
MOZ_ASSERT(range->EndOffset() >= 0,
|
|
"start offset shouldn't be negative");
|
|
minOffset = std::min(minOffset, range->EndOffset());
|
|
}
|
|
}
|
|
}
|
|
return minOffset < INT32_MAX ? minOffset : -1;
|
|
}
|