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94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=80: */
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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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#ifndef mozilla_IMEContentObserver_h_
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#define mozilla_IMEContentObserver_h_
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#include "mozilla/Attributes.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIDocShell.h" // XXX Why does only this need to be included here?
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#include "nsIReflowObserver.h"
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#include "nsISelectionListener.h"
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#include "nsIScrollObserver.h"
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#include "nsIWidget.h" // for nsIMEUpdatePreference
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#include "nsStubMutationObserver.h"
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#include "nsWeakReference.h"
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class nsIContent;
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class nsINode;
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class nsISelection;
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class nsPresContext;
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namespace mozilla {
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class EventStateManager;
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// IMEContentObserver notifies widget of any text and selection changes
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// in the currently focused editor
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class IMEContentObserver MOZ_FINAL : public nsISelectionListener,
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public nsStubMutationObserver,
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public nsIReflowObserver,
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public nsIScrollObserver,
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public nsSupportsWeakReference
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{
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public:
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IMEContentObserver();
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(IMEContentObserver,
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nsISelectionListener)
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NS_DECL_NSISELECTIONLISTENER
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTEWILLCHANGE
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIREFLOWOBSERVER
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// nsIScrollObserver
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virtual void ScrollPositionChanged() MOZ_OVERRIDE;
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void Init(nsIWidget* aWidget, nsPresContext* aPresContext,
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nsIContent* aContent);
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void Destroy();
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/**
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* IMEContentObserver is stored by EventStateManager during observing.
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* DisconnectFromEventStateManager() is called when EventStateManager stops
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* storing the instance.
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*/
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void DisconnectFromEventStateManager();
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bool IsManaging(nsPresContext* aPresContext, nsIContent* aContent);
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bool IsEditorHandlingEventForComposition() const;
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bool KeepAliveDuringDeactive() const
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{
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return mUpdatePreference.WantDuringDeactive();
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}
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nsIWidget* GetWidget() const { return mWidget; }
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nsresult GetSelectionAndRoot(nsISelection** aSelection,
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nsIContent** aRoot) const;
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private:
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void NotifyContentAdded(nsINode* aContainer, int32_t aStart, int32_t aEnd);
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void ObserveEditableNode();
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nsCOMPtr<nsIWidget> mWidget;
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nsCOMPtr<nsISelection> mSelection;
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nsCOMPtr<nsIContent> mRootContent;
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nsCOMPtr<nsINode> mEditableNode;
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nsCOMPtr<nsIDocShell> mDocShell;
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EventStateManager* mESM;
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nsIMEUpdatePreference mUpdatePreference;
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uint32_t mPreAttrChangeLength;
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};
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} // namespace mozilla
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#endif // mozilla_IMEContentObserver_h_
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