content/browser/web_contents/web_contents_view_aura.h

   1 // Copyright (c) 2012 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_WEB_CONTENTS_VIEW_AURA_H_
   6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_AURA_H_
   7
   8 #include <vector>
   9
  10 #include "base/gtest_prod_util.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "content/browser/renderer_host/overscroll_controller_delegate.h"
  14 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  15 #include "content/browser/web_contents/web_contents_view.h"
  16 #include "content/common/content_export.h"
  17 #include "ui/aura/window_delegate.h"
  18 #include "ui/aura/window_observer.h"
  19 #include "ui/wm/public/drag_drop_delegate.h"
  20
  21 namespace aura {
  22 class Window;
  23 }
  24
  25 namespace ui {
  26 class DropTargetEvent;
  27 }
  28
  29 namespace content {
  30 class GestureNavSimple;
  31 class OverscrollNavigationOverlay;
  32 class RenderWidgetHostImpl;
  33 class RenderWidgetHostViewAura;
  34 class ShadowLayerDelegate;
  35 class TouchEditableImplAura;
  36 class WebContentsViewDelegate;
  37 class WebContentsImpl;
  38 class WebDragDestDelegate;
  39
  40 class WebContentsViewAura
  41     : public WebContentsView,
  42       public RenderViewHostDelegateView,
  43       public OverscrollControllerDelegate,
  44       public aura::WindowDelegate,
  45       public aura::client::DragDropDelegate,
  46       public aura::WindowObserver {
  47  public:
  48   WebContentsViewAura(WebContentsImpl* web_contents,
  49                       WebContentsViewDelegate* delegate);
  50
  51   CONTENT_EXPORT void SetTouchEditableForTest(
  52       TouchEditableImplAura* touch_editable);
  53
  54  private:
  55   class WindowObserver;
  56
  57   ~WebContentsViewAura() override;
  58
  59   void SizeChangedCommon(const gfx::Size& size);
  60
  61   void EndDrag(blink::WebDragOperationsMask ops);
  62
  63   void InstallOverscrollControllerDelegate(RenderWidgetHostViewAura* view);
  64
  65   // Sets up the content window in preparation for starting an overscroll
  66   // gesture.
  67   void PrepareContentWindowForOverscroll();
  68
  69   // Completes the navigation in response to a completed overscroll gesture.
  70   // The navigation happens after an animation (either the overlay window
  71   // animates in, or the content window animates out).
  72   void CompleteOverscrollNavigation(OverscrollMode mode);
  73
  74   void AttachTouchEditableToRenderView();
  75
  76   void OverscrollUpdateForWebContentsDelegate(float delta_y);
  77
  78   // Overridden from WebContentsView:
  79   gfx::NativeView GetNativeView() const override;
  80   gfx::NativeView GetContentNativeView() const override;
  81   gfx::NativeWindow GetTopLevelNativeWindow() const override;
  82   void GetContainerBounds(gfx::Rect* out) const override;
  83   void SizeContents(const gfx::Size& size) override;
  84   void Focus() override;
  85   void SetInitialFocus() override;
  86   void StoreFocus() override;
  87   void RestoreFocus() override;
  88   DropData* GetDropData() const override;
  89   gfx::Rect GetViewBounds() const override;
  90   void CreateView(const gfx::Size& initial_size,
  91                   gfx::NativeView context) override;
  92   RenderWidgetHostViewBase* CreateViewForWidget(
  93       RenderWidgetHost* render_widget_host,
  94       bool is_guest_view_hack) override;
  95   RenderWidgetHostViewBase* CreateViewForPopupWidget(
  96       RenderWidgetHost* render_widget_host) override;
  97   void SetPageTitle(const base::string16& title) override;
  98   void RenderViewCreated(RenderViewHost* host) override;
  99   void RenderViewSwappedIn(RenderViewHost* host) override;
 100   void SetOverscrollControllerEnabled(bool enabled) override;
 101
 102   // Overridden from RenderViewHostDelegateView:
 103   void ShowContextMenu(RenderFrameHost* render_frame_host,
 104                        const ContextMenuParams& params) override;
 105   void StartDragging(const DropData& drop_data,
 106                      blink::WebDragOperationsMask operations,
 107                      const gfx::ImageSkia& image,
 108                      const gfx::Vector2d& image_offset,
 109                      const DragEventSourceInfo& event_info) override;
 110   void UpdateDragCursor(blink::WebDragOperation operation) override;
 111   void GotFocus() override;
 112   void TakeFocus(bool reverse) override;
 113   void ShowDisambiguationPopup(
 114       const gfx::Rect& target_rect,
 115       const SkBitmap& zoomed_bitmap,
 116       const base::Callback<void(ui::GestureEvent*)>& gesture_cb,
 117       const base::Callback<void(ui::MouseEvent*)>& mouse_cb) override;
 118   void HideDisambiguationPopup() override;
 119
 120   // Overridden from OverscrollControllerDelegate:
 121   gfx::Rect GetVisibleBounds() const override;
 122   bool OnOverscrollUpdate(float delta_x, float delta_y) override;
 123   void OnOverscrollComplete(OverscrollMode overscroll_mode) override;
 124   void OnOverscrollModeChange(OverscrollMode old_mode,
 125                               OverscrollMode new_mode) override;
 126
 127   // Overridden from aura::WindowDelegate:
 128   gfx::Size GetMinimumSize() const override;
 129   gfx::Size GetMaximumSize() const override;
 130   void OnBoundsChanged(const gfx::Rect& old_bounds,
 131                        const gfx::Rect& new_bounds) override;
 132   gfx::NativeCursor GetCursor(const gfx::Point& point) override;
 133   int GetNonClientComponent(const gfx::Point& point) const override;
 134   bool ShouldDescendIntoChildForEventHandling(
 135       aura::Window* child,
 136       const gfx::Point& location) override;
 137   bool CanFocus() override;
 138   void OnCaptureLost() override;
 139   void OnPaint(const ui::PaintContext& context) override;
 140   void OnDeviceScaleFactorChanged(float device_scale_factor) override;
 141   void OnWindowDestroying(aura::Window* window) override;
 142   void OnWindowDestroyed(aura::Window* window) override;
 143   void OnWindowTargetVisibilityChanged(bool visible) override;
 144   bool HasHitTestMask() const override;
 145   void GetHitTestMask(gfx::Path* mask) const override;
 146
 147   // Overridden from ui::EventHandler:
 148   void OnKeyEvent(ui::KeyEvent* event) override;
 149   void OnMouseEvent(ui::MouseEvent* event) override;
 150
 151   // Overridden from aura::client::DragDropDelegate:
 152   void OnDragEntered(const ui::DropTargetEvent& event) override;
 153   int OnDragUpdated(const ui::DropTargetEvent& event) override;
 154   void OnDragExited() override;
 155   int OnPerformDrop(const ui::DropTargetEvent& event) override;
 156
 157   // Overridden from aura::WindowObserver:
 158   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
 159
 160   // Update the web contents visiblity.
 161   void UpdateWebContentsVisibility(bool visible);
 162
 163   FRIEND_TEST_ALL_PREFIXES(WebContentsViewAuraTest, EnableDisableOverscroll);
 164
 165   scoped_ptr<aura::Window> window_;
 166
 167   scoped_ptr<WindowObserver> window_observer_;
 168
 169   // The WebContentsImpl whose contents we display.
 170   WebContentsImpl* web_contents_;
 171
 172   scoped_ptr<WebContentsViewDelegate> delegate_;
 173
 174   blink::WebDragOperationsMask current_drag_op_;
 175
 176   scoped_ptr<DropData> current_drop_data_;
 177
 178   WebDragDestDelegate* drag_dest_delegate_;
 179
 180   // We keep track of the render view host we're dragging over.  If it changes
 181   // during a drag, we need to re-send the DragEnter message.  WARNING:
 182   // this pointer should never be dereferenced.  We only use it for comparing
 183   // pointers.
 184   void* current_rvh_for_drag_;
 185
 186   // The overscroll gesture currently in progress.
 187   OverscrollMode current_overscroll_gesture_;
 188
 189   // This is the completed overscroll gesture. This is used for the animation
 190   // callback that happens in response to a completed overscroll gesture.
 191   OverscrollMode completed_overscroll_gesture_;
 192
 193   // This manages the overlay window that shows the screenshot during a history
 194   // navigation triggered by the overscroll gesture.
 195   scoped_ptr<OverscrollNavigationOverlay> navigation_overlay_;
 196
 197   scoped_ptr<TouchEditableImplAura> touch_editable_;
 198   scoped_ptr<GestureNavSimple> gesture_nav_simple_;
 199
 200   // On Windows we can run into problems if resources get released within the
 201   // initialization phase while the content (and its dimensions) are not known.
 202   bool is_or_was_visible_;
 203
 204   DISALLOW_COPY_AND_ASSIGN(WebContentsViewAura);
 205 };
 206
 207 }  // namespace content
 208
 209 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_AURA_H_