touch_editable_impl_aura.h revision c5cede9ae108bb15f6b7a8aea21c7e1fefa2834c 
1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_
6#define CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_
7
8#include <deque>
9#include <map>
10#include <queue>
11
12#include "content/browser/renderer_host/render_widget_host_view_aura.h"
13#include "ui/aura/window_observer.h"
14#include "ui/base/touch/touch_editing_controller.h"
15#include "ui/gfx/native_widget_types.h"
16#include "ui/gfx/point.h"
17#include "ui/gfx/rect.h"
18
19namespace ui {
20class Accelerator;
21}
22
23namespace content {
24class TouchEditableImplAuraTest;
25
26// Aura specific implementation of ui::TouchEditable for a RenderWidgetHostView.
27class CONTENT_EXPORT TouchEditableImplAura
28    : public ui::TouchEditable,
29      public NON_EXPORTED_BASE(RenderWidgetHostViewAura::TouchEditingClient) {
30 public:
31  virtual ~TouchEditableImplAura();
32
33  static TouchEditableImplAura* Create();
34
35  void AttachToView(RenderWidgetHostViewAura* view);
36
37  // Updates the |touch_selection_controller_| or ends touch editing session
38  // depending on the current selection and cursor state.
39  void UpdateEditingController();
40
41  void OverscrollStarted();
42  void OverscrollCompleted();
43
44  // Overridden from RenderWidgetHostViewAura::TouchEditingClient.
45  virtual void StartTouchEditing() OVERRIDE;
46  virtual void EndTouchEditing(bool quick) OVERRIDE;
47  virtual void OnSelectionOrCursorChanged(const gfx::Rect& anchor,
48                                          const gfx::Rect& focus) OVERRIDE;
49  virtual void OnTextInputTypeChanged(ui::TextInputType type) OVERRIDE;
50  virtual bool HandleInputEvent(const ui::Event* event) OVERRIDE;
51  virtual void GestureEventAck(int gesture_event_type) OVERRIDE;
52  virtual void OnViewDestroyed() OVERRIDE;
53
54  // Overridden from ui::TouchEditable:
55  virtual void SelectRect(const gfx::Point& start,
56                          const gfx::Point& end) OVERRIDE;
57  virtual void MoveCaretTo(const gfx::Point& point) OVERRIDE;
58  virtual void GetSelectionEndPoints(gfx::Rect* p1, gfx::Rect* p2) OVERRIDE;
59  virtual gfx::Rect GetBounds() OVERRIDE;
60  virtual gfx::NativeView GetNativeView() const OVERRIDE;
61  virtual void ConvertPointToScreen(gfx::Point* point) OVERRIDE;
62  virtual void ConvertPointFromScreen(gfx::Point* point) OVERRIDE;
63  virtual bool DrawsHandles() OVERRIDE;
64  virtual void OpenContextMenu(const gfx::Point& anchor) OVERRIDE;
65  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
66  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
67  virtual bool GetAcceleratorForCommandId(
68      int command_id,
69      ui::Accelerator* accelerator) OVERRIDE;
70  virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
71
72 protected:
73  TouchEditableImplAura();
74
75 private:
76  friend class TouchEditableImplAuraTest;
77
78  void Cleanup();
79
80  // Rectangles for the selection anchor and focus.
81  gfx::Rect selection_anchor_rect_;
82  gfx::Rect selection_focus_rect_;
83
84  // The current text input type.
85  ui::TextInputType text_input_type_;
86
87  RenderWidgetHostViewAura* rwhva_;
88  scoped_ptr<ui::TouchSelectionController> touch_selection_controller_;
89
90  // True if |rwhva_| is currently handling a gesture that could result in a
91  // change in selection (long press, double tap or triple tap).
92  bool selection_gesture_in_process_;
93
94  // Set to true if handles are hidden when user is scrolling. Used to determine
95  // whether to re-show handles after a scrolling session.
96  bool handles_hidden_due_to_scroll_;
97
98  // Keeps track of when the user is scrolling.
99  bool scroll_in_progress_;
100
101  // Set to true when the page starts an overscroll.
102  bool overscroll_in_progress_;
103
104  // Used to track if the current tap gesture is on a focused textfield.
105  bool is_tap_on_focused_textfield_;
106
107  // When we receive ack for a ET_GESTURE_TAP, we do not know if the ack is for
108  // a tap or a double tap (we only get the event type in the ack). So we have
109  // this queue to keep track of the the tap count so that we can distinguish
110  // between double and single tap when we get the ack.
111  std::queue<int> tap_gesture_tap_count_queue_;
112
113  DISALLOW_COPY_AND_ASSIGN(TouchEditableImplAura);
114};
115
116}  // namespace content
117
118#endif  // CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_
119