Mode Indicator using BubbleDelegateView.

chrome/browser/chromeos/input_method/mode_indicator_delegate_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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_DELEGATE_VIEW_H_
+#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_DELEGATE_VIEW_H_
+
+#include "base/strings/string16.h"
+#include "base/timer/timer.h"
+#include "ui/gfx/rect.h"
+#include "ui/views/bubble/bubble_delegate.h"
+
+namespace views {
+class Label;
+}  // namespace views
+
+namespace chromeos {
+namespace input_method {
+
+class ModeIndicatorDelegateView : public views::BubbleDelegateView {
+ public:
+  ModeIndicatorDelegateView(const gfx::Rect& cursor_bounds,
+                            const string16& label);
+  virtual ~ModeIndicatorDelegateView();
+
+  // Show the mode indicator then hide with fading animation.
+  void ShowAndFadeOut();
+
+  // views::BubbleDelegateView override:
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+
+ protected:
+  // views::BubbleDelegateView override:
+  virtual void Init() OVERRIDE;
+
+ private:
+  // Hide the window with fading animation.  This is called from
+  // ShowAndFadeOut.
+  void FadeOut();
+
+  gfx::Rect cursor_bounds_;
+  views::Label* label_view_;
+  base::OneShotTimer<ModeIndicatorDelegateView> timer_;
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_DELEGATE_VIEW_H_