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/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "content/browser/renderer_host/overscroll_controller_delegate.h"
  13 #include "content/common/content_export.h"
  14 #include "content/port/browser/render_view_host_delegate_view.h"
  15 #include "content/port/browser/web_contents_view_port.h"
  16 #include "ui/aura/window_delegate.h"
  17 #include "ui/compositor/layer_animation_observer.h"
  18 #include "ui/wm/public/drag_drop_delegate.h"
  19
  20 namespace aura {
  21 class Window;
  22 }
  23
  24 namespace ui {
  25 class DropTargetEvent;
  26 }
  27
  28 namespace content {
  29 class GestureNavSimple;
  30 class OverscrollNavigationOverlay;
  31 class RenderWidgetHostImpl;
  32 class ShadowLayerDelegate;
  33 class TouchEditableImplAura;
  34 class WebContentsViewDelegate;
  35 class WebContentsImpl;
  36 class WebDragDestDelegate;
  37
  38 class CONTENT_EXPORT WebContentsViewAura
  39     : public WebContentsViewPort,
  40       public RenderViewHostDelegateView,
  41       NON_EXPORTED_BASE(public OverscrollControllerDelegate),
  42       public ui::ImplicitAnimationObserver,
  43       public aura::WindowDelegate,
  44       public aura::client::DragDropDelegate {
  45  public:
  46   WebContentsViewAura(WebContentsImpl* web_contents,
  47                       WebContentsViewDelegate* delegate);
  48
  49   void SetupOverlayWindowForTesting();
  50
  51   void SetTouchEditableForTest(TouchEditableImplAura* touch_editable);
  52
  53  private:
  54   class WindowObserver;
  55
  56   virtual ~WebContentsViewAura();
  57
  58   void SizeChangedCommon(const gfx::Size& size);
  59
  60   void EndDrag(blink::WebDragOperationsMask ops);
  61
  62   void InstallOverscrollControllerDelegate(RenderWidgetHostImpl* host);
  63
  64   // Creates and sets up the overlay window that will be displayed during the
  65   // overscroll gesture.
  66   void PrepareOverscrollWindow();
  67
  68   // Sets up the content window in preparation for starting an overscroll
  69   // gesture.
  70   void PrepareContentWindowForOverscroll();
  71
  72   // Resets any in-progress animation for the overscroll gesture. Note that this
  73   // doesn't immediately reset the internal states; that happens after an
  74   // animation.
  75   void ResetOverscrollTransform();
  76
  77   // Completes the navigation in response to a completed overscroll gesture.
  78   // The navigation happens after an animation (either the overlay window
  79   // animates in, or the content window animates out).
  80   void CompleteOverscrollNavigation(OverscrollMode mode);
  81
  82   // Returns the window that should be animated for the overscroll gesture.
  83   // (note that during the overscroll gesture, either the overlay window or the
  84   // content window can be animated).
  85   aura::Window* GetWindowToAnimateForOverscroll();
  86
  87   // Returns the amount the animating window should be translated in response to
  88   // the overscroll gesture.
  89   gfx::Vector2d GetTranslationForOverscroll(int delta_x, int delta_y);
  90
  91   // A window showing the screenshot is overlayed during a navigation triggered
  92   // by overscroll. This function sets this up.
  93   void PrepareOverscrollNavigationOverlay();
  94
  95   // Changes the brightness of the layer depending on the amount of horizontal
  96   // overscroll (|delta_x|, in pixels).
  97   void UpdateOverscrollWindowBrightness(float delta_x);
  98
  99   void AttachTouchEditableToRenderView();
 100
 101   void OverscrollUpdateForWebContentsDelegate(int delta_y);
 102
 103   // Overridden from WebContentsView:
 104   virtual gfx::NativeView GetNativeView() const OVERRIDE;
 105   virtual gfx::NativeView GetContentNativeView() const OVERRIDE;
 106   virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
 107   virtual void GetContainerBounds(gfx::Rect *out) const OVERRIDE;
 108   virtual void OnTabCrashed(base::TerminationStatus status,
 109                             int error_code) OVERRIDE;
 110   virtual void SizeContents(const gfx::Size& size) OVERRIDE;
 111   virtual void Focus() OVERRIDE;
 112   virtual void SetInitialFocus() OVERRIDE;
 113   virtual void StoreFocus() OVERRIDE;
 114   virtual void RestoreFocus() OVERRIDE;
 115   virtual DropData* GetDropData() const OVERRIDE;
 116   virtual gfx::Rect GetViewBounds() const OVERRIDE;
 117
 118   // Overridden from WebContentsViewPort:
 119   virtual void CreateView(
 120       const gfx::Size& initial_size, gfx::NativeView context) OVERRIDE;
 121   virtual RenderWidgetHostView* CreateViewForWidget(
 122       RenderWidgetHost* render_widget_host) OVERRIDE;
 123   virtual RenderWidgetHostView* CreateViewForPopupWidget(
 124       RenderWidgetHost* render_widget_host) OVERRIDE;
 125   virtual void SetPageTitle(const base::string16& title) OVERRIDE;
 126   virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
 127   virtual void RenderViewSwappedIn(RenderViewHost* host) OVERRIDE;
 128   virtual void SetOverscrollControllerEnabled(bool enabled) OVERRIDE;
 129
 130   // Overridden from RenderViewHostDelegateView:
 131   virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
 132                                const ContextMenuParams& params) OVERRIDE;
 133   virtual void StartDragging(const DropData& drop_data,
 134                              blink::WebDragOperationsMask operations,
 135                              const gfx::ImageSkia& image,
 136                              const gfx::Vector2d& image_offset,
 137                              const DragEventSourceInfo& event_info) OVERRIDE;
 138   virtual void UpdateDragCursor(blink::WebDragOperation operation) OVERRIDE;
 139   virtual void GotFocus() OVERRIDE;
 140   virtual void TakeFocus(bool reverse) OVERRIDE;
 141
 142   // Overridden from OverscrollControllerDelegate:
 143   virtual gfx::Rect GetVisibleBounds() const OVERRIDE;
 144   virtual void OnOverscrollUpdate(float delta_x, float delta_y) OVERRIDE;
 145   virtual void OnOverscrollComplete(OverscrollMode overscroll_mode) OVERRIDE;
 146   virtual void OnOverscrollModeChange(OverscrollMode old_mode,
 147                                       OverscrollMode new_mode) OVERRIDE;
 148
 149   // Overridden from ui::ImplicitAnimationObserver:
 150   virtual void OnImplicitAnimationsCompleted() OVERRIDE;
 151
 152   // Overridden from aura::WindowDelegate:
 153   virtual gfx::Size GetMinimumSize() const OVERRIDE;
 154   virtual gfx::Size GetMaximumSize() const OVERRIDE;
 155   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
 156                                const gfx::Rect& new_bounds) OVERRIDE;
 157   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE;
 158   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE;
 159   virtual bool ShouldDescendIntoChildForEventHandling(
 160       aura::Window* child,
 161       const gfx::Point& location) OVERRIDE;
 162   virtual bool CanFocus() OVERRIDE;
 163   virtual void OnCaptureLost() OVERRIDE;
 164   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 165   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
 166   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
 167   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
 168   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE;
 169   virtual bool HasHitTestMask() const OVERRIDE;
 170   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
 171
 172   // Overridden from ui::EventHandler:
 173   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
 174   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
 175
 176   // Overridden from aura::client::DragDropDelegate:
 177   virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE;
 178   virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
 179   virtual void OnDragExited() OVERRIDE;
 180   virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
 181
 182   scoped_ptr<aura::Window> window_;
 183
 184   // The window that shows the screenshot of the history page during an
 185   // overscroll navigation gesture.
 186   scoped_ptr<aura::Window> overscroll_window_;
 187
 188   scoped_ptr<WindowObserver> window_observer_;
 189
 190   // The WebContentsImpl whose contents we display.
 191   WebContentsImpl* web_contents_;
 192
 193   scoped_ptr<WebContentsViewDelegate> delegate_;
 194
 195   blink::WebDragOperationsMask current_drag_op_;
 196
 197   scoped_ptr<DropData> current_drop_data_;
 198
 199   WebDragDestDelegate* drag_dest_delegate_;
 200
 201   // We keep track of the render view host we're dragging over.  If it changes
 202   // during a drag, we need to re-send the DragEnter message.  WARNING:
 203   // this pointer should never be dereferenced.  We only use it for comparing
 204   // pointers.
 205   void* current_rvh_for_drag_;
 206
 207   bool overscroll_change_brightness_;
 208
 209   // The overscroll gesture currently in progress.
 210   OverscrollMode current_overscroll_gesture_;
 211
 212   // This is the completed overscroll gesture. This is used for the animation
 213   // callback that happens in response to a completed overscroll gesture.
 214   OverscrollMode completed_overscroll_gesture_;
 215
 216   // This manages the overlay window that shows the screenshot during a history
 217   // navigation triggered by the overscroll gesture.
 218   scoped_ptr<OverscrollNavigationOverlay> navigation_overlay_;
 219
 220   scoped_ptr<ShadowLayerDelegate> overscroll_shadow_;
 221
 222   scoped_ptr<TouchEditableImplAura> touch_editable_;
 223   scoped_ptr<GestureNavSimple> gesture_nav_simple_;
 224
 225   DISALLOW_COPY_AND_ASSIGN(WebContentsViewAura);
 226 };
 227
 228 }  // namespace content
 229
 230 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_AURA_H_