Reland: Implement Aura side of unified touch text selection for contents

content/browser/renderer_host/touch_selection_controller_aura.h

+// Copyright 2014 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_RENDERER_HOST_TOUCH_SELECTION_CONTROLLER_AURA_H_
+#define CONTENT_BROWSER_RENDERER_HOST_TOUCH_SELECTION_CONTROLLER_AURA_H_
+
+#include <set>
+
+#include "base/timer/timer.h"
+#include "cc/output/viewport_selection_bound.h"
+#include "content/browser/renderer_host/input/touch_selection_controller.h"
+#include "ui/views/touchui/touch_editing_menu.h"
+
+namespace aura {
+class Window;
+}
+
+namespace ui {
+class MotionEventAura;
+class TouchEvent;
+}
+
+namespace content {
+
+class TouchSelectionControllerAuraClient {
+ public:
+  virtual float GetDeviceScaleFactor() = 0;
+  virtual void MoveCaret(const gfx::PointF& position) = 0;
+  virtual void SelectBetweenCoordinates(const gfx::PointF& start,
+                                        const gfx::PointF& end) = 0;
+  virtual aura::Window* GetParentWindow() = 0;
+  virtual bool IsCommandIdEnabled(int command_id) = 0;
+  virtual void ExecuteCommand(int command_id, int event_flags) = 0;
+  virtual void OpenContextMenu(const gfx::PointF& point) = 0;
+  virtual gfx::Rect ConvertRectToScreen(const gfx::RectF& rect) const = 0;
+};
+
+class TouchSelectionControllerAura : public TouchSelectionControllerClient,
+                                     public views::TouchEditingMenuController,
+                                     public ui::EventHandler {
+ public:
+  explicit TouchSelectionControllerAura(
+      TouchSelectionControllerAuraClient* client);
+  virtual ~TouchSelectionControllerAura();
+
+  //void SetTemporarilyHidden(bool hidden);
+  void OnSelectionEditable(bool editable);
+  void OnSelectionEmpty(bool empty);
+  void OnSelectionBoundsChanged(const cc::ViewportSelectionBound& start,
+                                const cc::ViewportSelectionBound& end);
+  void HandleGestureEvent(ui::GestureEvent* event);
+  void HideAndDisallowShowingAutomatically();
+  void HandleTouchEvent(ui::TouchEvent* event);
+  void OnWindowMoved();
+  void OnOverscrollStarted();
+  void OnOverscrollCompleted();
+  void OnFlingCompleted();
+
+  gfx::RectF GetCaretBounds() const;
+
+  const cc::ViewportSelectionBound& start() const { return start_; }
+  const cc::ViewportSelectionBound& end() const { return end_; }
+
+ private:
+  gfx::RectF GetStartRect() const;
+  gfx::RectF GetEndRect() const;
+  gfx::RectF GetBoundingRect() const;
+  gfx::RectF GetAnchorRect() const;
+  void QuickMenuTimerFired();
+  void UpdateQuickMenu();
+  bool IsQuickMenuAllowed() const;
+
+  // Overriden from TouchSelectionControllerClient.
+  virtual bool SupportsAnimation() const override;
+  virtual void SetNeedsAnimate() override;
+  virtual void MoveCaret(const gfx::PointF& position) override;
+  virtual void SelectBetweenCoordinates(const gfx::PointF& start,
+                                        const gfx::PointF& end) override;
+  virtual void OnSelectionEvent(SelectionEventType event,
+                                const gfx::PointF& position) override;
+  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() override;
+
+  // Overriden from views::TouchEditingMenuController.
+  virtual bool IsCommandIdEnabled(int command_id) const override;
+  virtual void ExecuteCommand(int command_id, int event_flags) override;
+  virtual void OpenContextMenu() override;
+  virtual void OnMenuClosed(views::TouchEditingMenuView* menu) override;
+
+  // Overriden from ui::EventHandler.
+  virtual void OnKeyEvent(ui::KeyEvent* event) override;
+  virtual void OnMouseEvent(ui::MouseEvent* event) override;
+  virtual void OnScrollEvent(ui::ScrollEvent* event) override;
+
+  TouchSelectionControllerAuraClient* client_;
+  scoped_ptr<ui::MotionEventAura> motion_event_;
+  scoped_ptr<TouchSelectionController> controller_;
+  base::OneShotTimer<TouchSelectionControllerAura> quick_menu_timer_;
+  views::TouchEditingMenuView* quick_menu_;
+  bool scroll_in_progress_;
+  bool overscroll_in_progress_;
+  bool handle_drag_in_progress_;
+  cc::ViewportSelectionBound start_;
+  cc::ViewportSelectionBound end_;
+
+  DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerAura);
+};
+
+}
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_TOUCH_SELECTION_CONTROLLER_AURA_H_