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// Copyright (c) 2011 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 VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
#define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
#pragma once
#include "base/string16.h"
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 TextfieldController {
public:
// This method is called whenever the text in the field changes.
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) {}
protected:
virtual ~TextfieldController() {}
};
} // namespace views
#endif // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
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