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// Copyright (c) 2010 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 CHROME_BROWSER_SPEECH_SPEECH_INPUT_BUBBLE_CONTROLLER_H_
#define CHROME_BROWSER_SPEECH_SPEECH_INPUT_BUBBLE_CONTROLLER_H_
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/speech/speech_input_bubble.h"
namespace gfx {
class Rect;
}
namespace speech_input {
// This class handles the speech input popup UI on behalf of SpeechInputManager.
// SpeechInputManager invokes methods in the IO thread and this class processes
// those requests in the UI thread. There is only 1 speech input bubble shown to
// the user at a time. User actions on that bubble are reported to the delegate.
class SpeechInputBubbleController
: public base::RefCountedThreadSafe<SpeechInputBubbleController>,
public SpeechInputBubbleDelegate {
public:
// All methods of this delegate are called in the IO thread.
class Delegate {
public:
// Invoked when the user cancels speech recognition by clicking on the
// cancel button or related action in the speech input UI.
virtual void RecognitionCancelled(int caller_id) = 0;
// Invoked when the user clicks outside the speech input info bubble causing
// it to close and input focus to change.
virtual void SpeechInputFocusChanged(int caller_id) = 0;
protected:
virtual ~Delegate() {}
};
explicit SpeechInputBubbleController(Delegate* delegate);
// Creates a new speech input bubble and displays it in the UI.
void CreateBubble(int caller_id,
int render_process_id,
int render_view_id,
const gfx::Rect& element_rect);
// Sets the bubble to show that recording completed and recognition is in
// progress.
void SetBubbleToRecognizingMode(int caller_id);
void CloseBubble(int caller_id);
// SpeechInputBubble::Delegate methods.
virtual void RecognitionCancelled();
virtual void InfoBubbleClosed();
private:
void InvokeDelegateRecognitionCancelled(int caller_id);
void InvokeDelegateFocusChanged(int caller_id);
// Only accessed in the IO thread.
Delegate* delegate_;
// Only accessed in the UI thread.
int current_bubble_caller_id_;
scoped_ptr<SpeechInputBubble> bubble_;
};
// This typedef is to workaround the issue with certain versions of
// Visual Studio where it gets confused between multiple Delegate
// classes and gives a C2500 error. (I saw this error on the try bots -
// the workaround was not needed for my machine).
typedef SpeechInputBubbleController::Delegate
SpeechInputBubbleControllerDelegate;
} // namespace speech_input
#endif // CHROME_BROWSER_SPEECH_SPEECH_INPUT_BUBBLE_CONTROLLER_H_
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