Introduces the speech recognition UI to app_list.

ui/app_list/views/speech_view.h

+// Copyright 2013 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_APP_LIST_VIEWS_SPEECH_VIEW_H_
+#define UI_APP_LIST_VIEWS_SPEECH_VIEW_H_
+
+#include "ui/app_list/speech_ui_model.h"
+#include "ui/views/controls/button/button.h"
+#include "ui/views/view.h"
+
+namespace views {
+class BoundsAnimator;
+class ImageButton;
+class Label;
+}
+
+namespace app_list {
+class AppListViewDelegate;

[xiyuan, 2013/12/05 22:06:30]

nit: insert an empty line above.

[Jun Mukai, 2013/12/06 00:31:10]

Done.

+class SpeechCardView;
+
+// SpeechView provides the card-like UI for the search-by-speech.
+class SpeechView : public views::View,
+                   public views::ButtonListener,
+                   public SpeechUIModelObserver {
+ public:
+  SpeechView(AppListViewDelegate* delegate);

[xiyuan, 2013/12/05 22:06:30]

nit: explicit

[Jun Mukai, 2013/12/06 00:31:10]

Done.

+  virtual ~SpeechView();
+
+  // Reset to the original state.
+  void Reset();
+
+  // The maximum height of the speech card.
+  static const int kMaxHeight;

[xiyuan, 2013/12/05 22:06:30]

nit: prefer to override GetPreferredSize instead of exposing this.

[Jun Mukai, 2013/12/06 00:31:10]

Done.

+
+ private:
+  int GetIndicatorRadius(int16 level);
+
+  // Overridden from views::View:
+  virtual void Layout() OVERRIDE;
+
+  // Overridden from views::ButtonListener:
+  virtual void ButtonPressed(views::Button* sender,
+                             const ui::Event& event) OVERRIDE;
+
+  // Overridden from SpeechUIModelObserver:
+  virtual void OnSpeechSoundLevelChanged(int16 level) OVERRIDE;
+  virtual void OnSpeechResult(const base::string16& result,
+                              bool is_final) OVERRIDE;
+  virtual void OnSpeechRecognitionStateChanged(
+      SpeechRecognitionState new_state) OVERRIDE;
+
+  AppListViewDelegate* delegate_;
+
+  views::View* indicator_;
+  views::ImageButton* mic_button_;
+  views::Label* speech_result_;
+  scoped_ptr<views::BoundsAnimator> indicator_animator_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpeechView);
+};
+
+}  // namespace app_list
+
+#endif  // UI_APP_LIST_VIEWS_SPEECH_VIEW_H_