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