Enable touch based selection and editing for webpages behind a flag.

content/browser/web_contents/touch_editable_impl_aura.h

+// Copyright (c) 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 CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_
+#define CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_
+
+#include <deque>
+#include <map>
+
+#include "content/browser/renderer_host/render_widget_host_view_aura.h"
+#include "ui/aura/window_observer.h"
+#include "ui/base/touch/touch_editing_controller.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+
+namespace ui {
+class Accelerator;
+}
+
+namespace content {
+
+// Aura specific implementation of ui::TouchEditable for a RenderWidgetHostView.
+class TouchEditableImplAura
+    : public ui::TouchEditable,
+      public aura::WindowObserver,
+      public RenderWidgetHostViewAura::TouchEditingClient {
+ public:
+  virtual ~TouchEditableImplAura();
+
+  static TouchEditableImplAura* Create();
+
+  void AttachToView(RenderWidgetHostViewAura* view);
+
+  // Overridden from RenderWidgetHostViewAura::TouchEditingClient.
+  virtual void StartTouchEditing() OVERRIDE;
+  virtual void EndTouchEditing() OVERRIDE;
+  virtual void OnSelectionOrCursorChanged(const gfx::Rect& anchor,
+                                          const gfx::Rect& focus) OVERRIDE;
+  virtual void OnTextInputTypeChanged(ui::TextInputType type) OVERRIDE;
+  virtual bool HandleInputEvent(const ui::Event* event) OVERRIDE;
+  virtual void GestureEventAck(int gesture_event_type) OVERRIDE;
+  virtual void OnViewDestroyed() OVERRIDE;
+
+  // Overridden from ui::TouchEditable:
+  virtual void SelectRect(const gfx::Point& start,
+                          const gfx::Point& end) OVERRIDE;
+  virtual void MoveCaretTo(const gfx::Point& point) OVERRIDE;
+  virtual void GetSelectionEndPoints(gfx::Rect* p1, gfx::Rect* p2) OVERRIDE;
+  virtual gfx::Rect GetBounds() OVERRIDE;
+  virtual gfx::NativeView GetNativeView() OVERRIDE;
+  virtual void ConvertPointToScreen(gfx::Point* point) OVERRIDE;
+  virtual void ConvertPointFromScreen(gfx::Point* point) OVERRIDE;
+  virtual bool DrawsHandles() OVERRIDE;
+  virtual void OpenContextMenu(const gfx::Point anchor) OVERRIDE;
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+      int command_id,
+      ui::Accelerator* accelerator) OVERRIDE;
+  virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
+
+  // Overridden from aura::WindowObserver.
+  virtual void OnWindowParentChanged(aura::Window* window,
+                                     aura::Window* parent) OVERRIDE;
+  virtual void OnWindowBoundsChanged(aura::Window* window,
+                                     const gfx::Rect& old_bounds,
+                                     const gfx::Rect& new_bounds) OVERRIDE;
+  virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
+
+ private:
+  TouchEditableImplAura();
+
+  // Convenience method to update the |touch_selection_controller_| or end touch
+  // editing session depending on the current selection and cursor state.
+  void UpdateController();
+
+  void Cleanup();
+
+  // Rectangles for the selection anchor and focus.
+  gfx::Rect selection_anchor_rect_;
+  gfx::Rect selection_focus_rect_;
+
+  // The current text input type.
+  ui::TextInputType text_input_type_;
+
+  RenderWidgetHostViewAura* rwhva_;
+  aura::Window* top_level_window_;
+  scoped_ptr<ui::TouchSelectionController> touch_selection_controller_;
+
+  // True if |rwhva_| is currently handling a gesture that could result in a
+  // change in selection.
+  bool selection_gesture_in_process_;
+
+  DISALLOW_COPY_AND_ASSIGN(TouchEditableImplAura);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_