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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
#define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
#pragma once
#include "base/string16.h"
#include "ui/views/views_export.h"
namespace ui {
class OSExchangeData;
} // namespace ui
namespace views {
class KeyEvent;
class Textfield;
// This defines the callback interface for other code to be notified of changes
// in the state of a text field.
class VIEWS_EXPORT TextfieldController {
public:
// This method is called whenever the text in the field is changed by the
// user. It won't be called if the text is changed by calling
// Textfield::SetText() or Textfield::AppendText().
virtual void ContentsChanged(Textfield* sender,
const string16& new_contents) = 0;
// This method is called to get notified about keystrokes in the edit.
// Returns true if the message was handled and should not be processed
// further. If it returns false the processing continues.
virtual bool HandleKeyEvent(Textfield* sender,
const KeyEvent& key_event) = 0;
// Called before performing a user action that may change the textfield.
// It's currently only supported by Views implementation.
virtual void OnBeforeUserAction(Textfield* sender) {}
// Called after performing a user action that may change the textfield.
// It's currently only supported by Views implementation.
virtual void OnAfterUserAction(Textfield* sender) {}
// Called after performing a Cut or Copy operation.
virtual void OnAfterCutOrCopy() {}
// Called after the textfield has written drag data to give the controller a
// chance to modify the drag data.
virtual void OnWriteDragData(ui::OSExchangeData* data) {}
protected:
virtual ~TextfieldController() {}
};
} // namespace views
#endif // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
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