Translate: Add TranslateBubbleView

chrome/browser/ui/translate/translate_bubble_view_state_transition.cc

+// 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.
+
+#include "chrome/browser/ui/translate/translate_bubble_view_state_transition.h"
+
+#include "base/logging.h"
+
+TranslateBubbleViewStateTransition::TranslateBubbleViewStateTransition(
+    TranslateBubbleModel::ViewState view_state)
+    : view_state_(view_state),
+      view_state_before_advanced_view_(view_state) {
+  // The initial view type must not be 'Advanced'.
+  DCHECK_NE(TranslateBubbleModel::VIEW_STATE_ADVANCED, view_state_);
+}
+
+void TranslateBubbleViewStateTransition::SetViewState(
+    TranslateBubbleModel::ViewState view_state) {
+  view_state_ = view_state;
+  if (view_state != TranslateBubbleModel::VIEW_STATE_ADVANCED)
+    view_state_before_advanced_view_ = view_state;
+}
+
+void TranslateBubbleViewStateTransition::GoBackFromAdvanced() {
+  DCHECK(view_state_ == TranslateBubbleModel::VIEW_STATE_ADVANCED);
+  SetViewState(view_state_before_advanced_view_);
+}