Translate: Add TranslateBubbleView

chrome/browser/ui/translate/translate_bubble_view_state_transition.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_UI_TRANSLATE_TRANSLATE_BUBBLE_VIEW_STATE_TRANSITION_H_
+#define CHROME_BROWSER_UI_TRANSLATE_TRANSLATE_BUBBLE_VIEW_STATE_TRANSITION_H_
+
+#include "base/basictypes.h"
+#include "chrome/browser/ui/translate/translate_bubble_model.h"
+
+// The class which manages the transition of the view state of the Translate
+// bubble.
+class TranslateBubbleViewStateTransition {
+ public:
+  explicit TranslateBubbleViewStateTransition(
+      TranslateBubbleModel::ViewState view_state);
+
+  TranslateBubbleModel::ViewState view_state() const { return view_state_; }
+
+  // Transitions the view state.
+  void SetViewState(TranslateBubbleModel::ViewState view_state);
+
+  // Goes back from the 'Advanced' view state.
+  void GoBackFromAdvanced();
+
+ private:
+  // The current view type.
+  TranslateBubbleModel::ViewState view_state_;
+
+  // The view type. When the current view type is not 'Advanced' view, this is
+  // equivalent to |view_state_|. Otherwise, this is the previous view type
+  // before the user opens the 'Advanced' view. This is used to navigate when
+  // pressing 'Cancel' button on the 'Advanced' view.
+  TranslateBubbleModel::ViewState view_state_before_advanced_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(TranslateBubbleViewStateTransition);
+};
+
+#endif  // CHROME_BROWSER_UI_TRANSLATE_TRANSLATE_BUBBLE_VIEW_STATE_TRANSITION_H_