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/client/drag_drop_delegate.h"
  17 #include "ui/aura/window_delegate.h"
  18 #include "ui/compositor/layer_animation_observer.h"
  19
  20 namespace aura {
  21 class Window;
  22 }
  23
  24 namespace ui {
  25 class DropTargetEvent;
  26 }
  27
  28 namespace content {
  29 class OverscrollNavigationOverlay;
  30 class ShadowLayerDelegate;
  31 class TouchEditableImplAura;
  32 class WebContentsViewDelegate;
  33 class WebContentsImpl;
  34 class WebDragDestDelegate;
  35
  36 class CONTENT_EXPORT WebContentsViewAura
  37     : public WebContentsViewPort,
  38       public RenderViewHostDelegateView,
  39       NON_EXPORTED_BASE(public OverscrollControllerDelegate),
  40       public ui::ImplicitAnimationObserver,
  41       public aura::WindowDelegate,
  42       public aura::client::DragDropDelegate {
  43  public:
  44   WebContentsViewAura(WebContentsImpl* web_contents,
  45                       WebContentsViewDelegate* delegate);
  46
  47   void SetupOverlayWindowForTesting();
  48
  49   void SetTouchEditableForTest(TouchEditableImplAura* touch_editable);
  50
  51  private:
  52   class WindowObserver;
  53 #if defined(OS_WIN)
  54   class ChildWindowObserver;
  55 #endif
  56
  57   virtual ~WebContentsViewAura();
  58
  59   void SizeChangedCommon(const gfx::Size& size);
  60
  61   void EndDrag(WebKit::WebDragOperationsMask ops);
  62
  63   // Creates and sets up the overlay window that will be displayed during the
  64   // overscroll gesture.
  65   void PrepareOverscrollWindow();
  66
  67   // Sets up the content window in preparation for starting an overscroll
  68   // gesture.
  69   void PrepareContentWindowForOverscroll();
  70
  71   // Resets any in-progress animation for the overscroll gesture. Note that this
  72   // doesn't immediately reset the internal states; that happens after an
  73   // animation.
  74   void ResetOverscrollTransform();
  75
  76   // Completes the navigation in response to a completed overscroll gesture.
  77   // The navigation happens after an animation (either the overlay window
  78   // animates in, or the content window animates out).
  79   void CompleteOverscrollNavigation(OverscrollMode mode);
  80
  81   // Returns the window that should be animated for the overscroll gesture.
  82   // (note that during the overscroll gesture, either the overlay window or the
  83   // content window can be animated).
  84   aura::Window* GetWindowToAnimateForOverscroll();
  85
  86   // Returns the amount the animating window should be translated in response to
  87   // the overscroll gesture.
  88   gfx::Vector2d GetTranslationForOverscroll(int delta_x, int delta_y);
  89
  90   // A window showing the screenshot is overlayed during a navigation triggered
  91   // by overscroll. This function sets this up.
  92   void PrepareOverscrollNavigationOverlay();
  93
  94   // Changes the brightness of the layer depending on the amount of horizontal
  95   // overscroll (|delta_x|, in pixels).
  96   void UpdateOverscrollWindowBrightness(float delta_x);
  97
  98   void AttachTouchEditableToRenderView();
  99
 100   void OverscrollUpdateForWebContentsDelegate(int delta_y);
 101
 102   // Overridden from WebContentsView:
 103   virtual gfx::NativeView GetNativeView() const OVERRIDE;
 104   virtual gfx::NativeView GetContentNativeView() const OVERRIDE;
 105   virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
 106   virtual void GetContainerBounds(gfx::Rect *out) const OVERRIDE;
 107   virtual void OnTabCrashed(base::TerminationStatus status,
 108                             int error_code) OVERRIDE;
 109   virtual void SizeContents(const gfx::Size& size) OVERRIDE;
 110   virtual void Focus() OVERRIDE;
 111   virtual void SetInitialFocus() OVERRIDE;
 112   virtual void StoreFocus() OVERRIDE;
 113   virtual void RestoreFocus() OVERRIDE;
 114   virtual DropData* GetDropData() const OVERRIDE;
 115   virtual gfx::Rect GetViewBounds() const OVERRIDE;
 116
 117   // Overridden from WebContentsViewPort:
 118   virtual void CreateView(
 119       const gfx::Size& initial_size, gfx::NativeView context) OVERRIDE;
 120   virtual RenderWidgetHostView* CreateViewForWidget(
 121       RenderWidgetHost* render_widget_host) OVERRIDE;
 122   virtual RenderWidgetHostView* CreateViewForPopupWidget(
 123       RenderWidgetHost* render_widget_host) OVERRIDE;
 124   virtual void SetPageTitle(const string16& title) OVERRIDE;
 125   virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
 126   virtual void RenderViewSwappedIn(RenderViewHost* host) OVERRIDE;
 127   virtual void SetOverscrollControllerEnabled(bool enabled) OVERRIDE;
 128
 129   // Overridden from RenderViewHostDelegateView:
 130   virtual void ShowContextMenu(const ContextMenuParams& params) OVERRIDE;
 131   virtual void ShowPopupMenu(const gfx::Rect& bounds,
 132                              int item_height,
 133                              double item_font_size,
 134                              int selected_item,
 135                              const std::vector<MenuItem>& items,
 136                              bool right_aligned,
 137                              bool allow_multiple_selection) OVERRIDE;
 138   virtual void StartDragging(const DropData& drop_data,
 139                              WebKit::WebDragOperationsMask operations,
 140                              const gfx::ImageSkia& image,
 141                              const gfx::Vector2d& image_offset,
 142                              const DragEventSourceInfo& event_info) OVERRIDE;
 143   virtual void UpdateDragCursor(WebKit::WebDragOperation operation) OVERRIDE;
 144   virtual void GotFocus() OVERRIDE;
 145   virtual void TakeFocus(bool reverse) OVERRIDE;
 146
 147   // Overridden from OverscrollControllerDelegate:
 148   virtual void OnOverscrollUpdate(float delta_x, float delta_y) OVERRIDE;
 149   virtual void OnOverscrollComplete(OverscrollMode overscroll_mode) OVERRIDE;
 150   virtual void OnOverscrollModeChange(OverscrollMode old_mode,
 151                                       OverscrollMode new_mode) OVERRIDE;
 152
 153   // Overridden from ui::ImplicitAnimationObserver:
 154   virtual void OnImplicitAnimationsCompleted() OVERRIDE;
 155
 156   // Overridden from aura::WindowDelegate:
 157   virtual gfx::Size GetMinimumSize() const OVERRIDE;
 158   virtual gfx::Size GetMaximumSize() const OVERRIDE;
 159   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
 160                                const gfx::Rect& new_bounds) OVERRIDE;
 161   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE;
 162   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE;
 163   virtual bool ShouldDescendIntoChildForEventHandling(
 164       aura::Window* child,
 165       const gfx::Point& location) OVERRIDE;
 166   virtual bool CanFocus() OVERRIDE;
 167   virtual void OnCaptureLost() OVERRIDE;
 168   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 169   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
 170   virtual void OnWindowDestroying() OVERRIDE;
 171   virtual void OnWindowDestroyed() OVERRIDE;
 172   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE;
 173   virtual bool HasHitTestMask() const OVERRIDE;
 174   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
 175   virtual void DidRecreateLayer(ui::Layer* old_layer,
 176                                 ui::Layer* new_layer) OVERRIDE;
 177
 178   // Overridden from ui::EventHandler:
 179   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
 180   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
 181
 182   // Overridden from aura::client::DragDropDelegate:
 183   virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE;
 184   virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
 185   virtual void OnDragExited() OVERRIDE;
 186   virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
 187
 188   scoped_ptr<aura::Window> window_;
 189
 190   // The window that shows the screenshot of the history page during an
 191   // overscroll navigation gesture.
 192   scoped_ptr<aura::Window> overscroll_window_;
 193
 194   scoped_ptr<WindowObserver> window_observer_;
 195 #if defined(OS_WIN)
 196   scoped_ptr<ChildWindowObserver> child_window_observer_;
 197 #endif
 198
 199   // The WebContentsImpl whose contents we display.
 200   WebContentsImpl* web_contents_;
 201
 202   scoped_ptr<WebContentsViewDelegate> delegate_;
 203
 204   WebKit::WebDragOperationsMask current_drag_op_;
 205
 206   scoped_ptr<DropData> current_drop_data_;
 207
 208   WebDragDestDelegate* drag_dest_delegate_;
 209
 210   // We keep track of the render view host we're dragging over.  If it changes
 211   // during a drag, we need to re-send the DragEnter message.  WARNING:
 212   // this pointer should never be dereferenced.  We only use it for comparing
 213   // pointers.
 214   void* current_rvh_for_drag_;
 215
 216   bool overscroll_change_brightness_;
 217
 218   // The overscroll gesture currently in progress.
 219   OverscrollMode current_overscroll_gesture_;
 220
 221   // This is the completed overscroll gesture. This is used for the animation
 222   // callback that happens in response to a completed overscroll gesture.
 223   OverscrollMode completed_overscroll_gesture_;
 224
 225   // This manages the overlay window that shows the screenshot during a history
 226   // navigation triggered by the overscroll gesture.
 227   scoped_ptr<OverscrollNavigationOverlay> navigation_overlay_;
 228
 229   scoped_ptr<ShadowLayerDelegate> overscroll_shadow_;
 230
 231   scoped_ptr<TouchEditableImplAura> touch_editable_;
 232
 233   DISALLOW_COPY_AND_ASSIGN(WebContentsViewAura);
 234 };
 235
 236 }  // namespace content
 237
 238 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_AURA_H_