зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
3.2 KiB
C++
106 строки
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_TextInputListener_h
|
|
#define mozilla_TextInputListener_h
|
|
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsIDOMEventListener.h"
|
|
#include "nsStringFwd.h"
|
|
#include "nsWeakReference.h"
|
|
|
|
class nsIFrame;
|
|
class nsITextControlElement;
|
|
class nsTextControlFrame;
|
|
|
|
namespace mozilla {
|
|
|
|
namespace dom {
|
|
class Selection;
|
|
} // namespace dom
|
|
|
|
class TextInputListener final : public nsIDOMEventListener,
|
|
public nsSupportsWeakReference {
|
|
public:
|
|
explicit TextInputListener(nsITextControlElement* aTextControlElement);
|
|
|
|
void SetFrame(nsIFrame* aTextControlFrame) { mFrame = aTextControlFrame; }
|
|
void SettingValue(bool aValue) { mSettingValue = aValue; }
|
|
void SetValueChanged(bool aSetValueChanged) {
|
|
mSetValueChanged = aSetValueChanged;
|
|
}
|
|
|
|
/**
|
|
* aFrame is an optional pointer to our frame, if not passed the method will
|
|
* use mFrame to compute it lazily.
|
|
*/
|
|
void HandleValueChanged(nsTextControlFrame* aFrame = nullptr);
|
|
|
|
/**
|
|
* OnEditActionHandled() is called when the editor handles each edit action.
|
|
*/
|
|
void OnEditActionHandled();
|
|
|
|
/**
|
|
* OnSelectionChange() is called when selection is changed in the editor.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT
|
|
void OnSelectionChange(dom::Selection& aSelection, int16_t aReason);
|
|
|
|
/**
|
|
* Start to listen or end listening to selection change in the editor.
|
|
*/
|
|
void StartToListenToSelectionChange() { mListeningToSelectionChange = true; }
|
|
void EndListeningToSelectionChange() { mListeningToSelectionChange = false; }
|
|
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(TextInputListener,
|
|
nsIDOMEventListener)
|
|
NS_DECL_NSIDOMEVENTLISTENER
|
|
|
|
protected:
|
|
virtual ~TextInputListener() = default;
|
|
|
|
nsresult UpdateTextInputCommands(const nsAString& aCommandsToUpdate,
|
|
dom::Selection* aSelection = nullptr,
|
|
int16_t aReason = 0);
|
|
|
|
protected:
|
|
nsIFrame* mFrame;
|
|
nsITextControlElement* const mTxtCtrlElement;
|
|
|
|
bool mSelectionWasCollapsed;
|
|
|
|
/**
|
|
* Whether we had undo items or not the last time we got EditAction()
|
|
* notification (when this state changes we update undo and redo menus)
|
|
*/
|
|
bool mHadUndoItems;
|
|
/**
|
|
* Whether we had redo items or not the last time we got EditAction()
|
|
* notification (when this state changes we update undo and redo menus)
|
|
*/
|
|
bool mHadRedoItems;
|
|
/**
|
|
* Whether we're in the process of a SetValue call, and should therefore
|
|
* refrain from calling OnValueChanged.
|
|
*/
|
|
bool mSettingValue;
|
|
/**
|
|
* Whether we are in the process of a SetValue call that doesn't want
|
|
* |SetValueChanged| to be called.
|
|
*/
|
|
bool mSetValueChanged;
|
|
/**
|
|
* Whether we're listening to selection change in the editor.
|
|
*/
|
|
bool mListeningToSelectionChange;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // #ifndef mozilla_TextInputListener_h
|