content/browser/web_contents/touch_editable_impl_aura.h

   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/geometry/point.h"
  16 #include "ui/gfx/geometry/rect.h"
  17 #include "ui/gfx/native_widget_types.h"
  18
  19 namespace ui {
  20 class Accelerator;
  21 }
  22
  23 namespace content {
  24 class TouchEditableImplAuraTest;
  25
  26 // Aura specific implementation of ui::TouchEditable for a RenderWidgetHostView.
  27 class CONTENT_EXPORT TouchEditableImplAura
  28     : public ui::TouchEditable,
  29       public NON_EXPORTED_BASE(RenderWidgetHostViewAura::TouchEditingClient) {
  30  public:
  31   ~TouchEditableImplAura() override;
  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   virtual void OverscrollStarted();
  42   virtual void OverscrollCompleted();
  43
  44   // Overridden from RenderWidgetHostViewAura::TouchEditingClient.
  45   void StartTouchEditing() override;
  46   void EndTouchEditing(bool quick) override;
  47   void OnSelectionOrCursorChanged(const ui::SelectionBound& anchor,
  48                                   const ui::SelectionBound& focus) override;
  49   void OnTextInputTypeChanged(ui::TextInputType type) override;
  50   bool HandleInputEvent(const ui::Event* event) override;
  51   void GestureEventAck(int gesture_event_type) override;
  52   void DidStopFlinging() override;
  53   void OnViewDestroyed() override;
  54
  55   // Overridden from ui::TouchEditable:
  56   void SelectRect(const gfx::Point& start, const gfx::Point& end) override;
  57   void MoveCaretTo(const gfx::Point& point) override;
  58   void GetSelectionEndPoints(ui::SelectionBound* anchor,
  59                              ui::SelectionBound* focus) override;
  60   gfx::Rect GetBounds() override;
  61   gfx::NativeView GetNativeView() const override;
  62   void ConvertPointToScreen(gfx::Point* point) override;
  63   void ConvertPointFromScreen(gfx::Point* point) override;
  64   bool DrawsHandles() override;
  65   void OpenContextMenu(const gfx::Point& anchor) override;
  66   bool IsCommandIdChecked(int command_id) const override;
  67   bool IsCommandIdEnabled(int command_id) const override;
  68   bool GetAcceleratorForCommandId(int command_id,
  69                                   ui::Accelerator* accelerator) override;
  70   void ExecuteCommand(int command_id, int event_flags) override;
  71   void DestroyTouchSelection() override;
  72
  73  protected:
  74   TouchEditableImplAura();
  75
  76  private:
  77   friend class TouchEditableImplAuraTest;
  78
  79   // A convenience function that is called after scroll/fling/overscroll ends to
  80   // re-activate touch selection if necessary.
  81   void StartTouchEditingIfNecessary();
  82
  83   void Cleanup();
  84
  85   // Bounds for the selection.
  86   ui::SelectionBound selection_anchor_;
  87   ui::SelectionBound selection_focus_;
  88
  89   // The current text input type.
  90   ui::TextInputType text_input_type_;
  91
  92   RenderWidgetHostViewAura* rwhva_;
  93   scoped_ptr<ui::TouchEditingControllerDeprecated> touch_selection_controller_;
  94
  95   // True if |rwhva_| is currently handling a gesture that could result in a
  96   // change in selection (long press, double tap or triple tap).
  97   bool selection_gesture_in_process_;
  98
  99   // Set to true if handles are hidden when user is scrolling. Used to determine
 100   // whether to re-show handles after a scrolling session.
 101   bool handles_hidden_due_to_scroll_;
 102
 103   // Keep track of scrolls/overscrolls in progress.
 104   bool scroll_in_progress_;
 105   bool overscroll_in_progress_;
 106
 107   // Used to track if a textfield was focused when the current tap gesture
 108   // happened.
 109   bool textfield_was_focused_on_tap_;
 110
 111   DISALLOW_COPY_AND_ASSIGN(TouchEditableImplAura);
 112 };
 113
 114 }  // namespace content
 115
 116 #endif  // CONTENT_BROWSER_WEB_CONTENTS_TOUCH_EDITABLE_IMPL_AURA_H_