content/browser/renderer_host/render_widget_host_view_mac.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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
   7
   8 #import <Cocoa/Cocoa.h>
   9 #include <IOSurface/IOSurfaceAPI.h>
  10 #include <list>
  11 #include <map>
  12 #include <set>
  13 #include <string>
  14 #include <utility>
  15 #include <vector>
  16
  17 #include "base/mac/scoped_nsobject.h"
  18 #include "base/memory/scoped_ptr.h"
  19 #include "base/memory/weak_ptr.h"
  20 #include "base/time/time.h"
  21 #include "content/browser/compositor/browser_compositor_view_mac.h"
  22 #include "content/browser/compositor/delegated_frame_host.h"
  23 #include "content/browser/renderer_host/display_link_mac.h"
  24 #include "content/browser/renderer_host/input/mouse_wheel_rails_filter_mac.h"
  25 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  26 #include "content/common/content_export.h"
  27 #include "content/common/cursors/webcursor.h"
  28 #include "content/common/edit_command.h"
  29 #import "content/public/browser/render_widget_host_view_mac_base.h"
  30 #include "ipc/ipc_sender.h"
  31 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
  32 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
  33 #include "ui/accelerated_widget_mac/io_surface_layer.h"
  34 #include "ui/base/cocoa/base_view.h"
  35 #include "ui/base/cocoa/remote_layer_api.h"
  36 #include "ui/gfx/display_observer.h"
  37
  38 namespace content {
  39 class RenderWidgetHostImpl;
  40 class RenderWidgetHostViewMac;
  41 class RenderWidgetHostViewMacEditCommandHelper;
  42 class WebContents;
  43 }
  44
  45 namespace ui {
  46 class Compositor;
  47 class Layer;
  48 }
  49
  50 @class FullscreenWindowManager;
  51 @protocol RenderWidgetHostViewMacDelegate;
  52 @class ToolTip;
  53
  54 @protocol RenderWidgetHostViewMacOwner
  55 - (content::RenderWidgetHostViewMac*)renderWidgetHostViewMac;
  56 @end
  57
  58 // This is the view that lives in the Cocoa view hierarchy. In Windows-land,
  59 // RenderWidgetHostViewWin is both the view and the delegate. We split the roles
  60 // but that means that the view needs to own the delegate and will dispose of it
  61 // when it's removed from the view system.
  62 @interface RenderWidgetHostViewCocoa
  63     : BaseView <RenderWidgetHostViewMacBase,
  64                 RenderWidgetHostViewMacOwner,
  65                 NSTextInputClient> {
  66  @private
  67   scoped_ptr<content::RenderWidgetHostViewMac> renderWidgetHostView_;
  68   // This ivar is the cocoa delegate of the NSResponder.
  69   base::scoped_nsobject<NSObject<RenderWidgetHostViewMacDelegate>>
  70       responderDelegate_;
  71   BOOL canBeKeyView_;
  72   BOOL closeOnDeactivate_;
  73   BOOL opaque_;
  74   scoped_ptr<content::RenderWidgetHostViewMacEditCommandHelper>
  75       editCommand_helper_;
  76
  77   // These are part of the magic tooltip code from WebKit's WebHTMLView:
  78   id trackingRectOwner_;              // (not retained)
  79   void* trackingRectUserData_;
  80   NSTrackingRectTag lastToolTipTag_;
  81   base::scoped_nsobject<NSString> toolTip_;
  82
  83   // Is YES if there was a mouse-down as yet unbalanced with a mouse-up.
  84   BOOL hasOpenMouseDown_;
  85
  86   NSWindow* lastWindow_;  // weak
  87
  88   // The cursor for the page. This is passed up from the renderer.
  89   base::scoped_nsobject<NSCursor> currentCursor_;
  90
  91   // Variables used by our implementaion of the NSTextInput protocol.
  92   // An input method of Mac calls the methods of this protocol not only to
  93   // notify an application of its status, but also to retrieve the status of
  94   // the application. That is, an application cannot control an input method
  95   // directly.
  96   // This object keeps the status of a composition of the renderer and returns
  97   // it when an input method asks for it.
  98   // We need to implement Objective-C methods for the NSTextInput protocol. On
  99   // the other hand, we need to implement a C++ method for an IPC-message
 100   // handler which receives input-method events from the renderer.
 101
 102   // Represents the input-method attributes supported by this object.
 103   base::scoped_nsobject<NSArray> validAttributesForMarkedText_;
 104
 105   // Indicates if we are currently handling a key down event.
 106   BOOL handlingKeyDown_;
 107
 108   // Indicates if there is any marked text.
 109   BOOL hasMarkedText_;
 110
 111   // Indicates if unmarkText is called or not when handling a keyboard
 112   // event.
 113   BOOL unmarkTextCalled_;
 114
 115   // The range of current marked text inside the whole content of the DOM node
 116   // being edited.
 117   // TODO(suzhe): This is currently a fake value, as we do not support accessing
 118   // the whole content yet.
 119   NSRange markedRange_;
 120
 121   // The selected range, cached from a message sent by the renderer.
 122   NSRange selectedRange_;
 123
 124   // Text to be inserted which was generated by handling a key down event.
 125   base::string16 textToBeInserted_;
 126
 127   // Marked text which was generated by handling a key down event.
 128   base::string16 markedText_;
 129
 130   // Underline information of the |markedText_|.
 131   std::vector<blink::WebCompositionUnderline> underlines_;
 132
 133   // Indicates if doCommandBySelector method receives any edit command when
 134   // handling a key down event.
 135   BOOL hasEditCommands_;
 136
 137   // Contains edit commands received by the -doCommandBySelector: method when
 138   // handling a key down event, not including inserting commands, eg. insertTab,
 139   // etc.
 140   content::EditCommands editCommands_;
 141
 142   // The plugin that currently has focus (-1 if no plugin has focus).
 143   int focusedPluginIdentifier_;
 144
 145   // Whether or not plugin IME is currently enabled active.
 146   BOOL pluginImeActive_;
 147
 148   // Whether the previous mouse event was ignored due to hitTest check.
 149   BOOL mouseEventWasIgnored_;
 150
 151   // Event monitor for scroll wheel end event.
 152   id endWheelMonitor_;
 153
 154   // When a gesture starts, the system does not inform the view of which type
 155   // of gesture is happening (magnify, rotate, etc), rather, it just informs
 156   // the view that some as-yet-undefined gesture is starting. Capture the
 157   // information about the gesture's beginning event here. It will be used to
 158   // create a specific gesture begin event later.
 159   scoped_ptr<blink::WebGestureEvent> gestureBeginEvent_;
 160
 161   // This is set if a GesturePinchBegin event has been sent in the lifetime of
 162   // |gestureBeginEvent_|. If set, a GesturePinchEnd will be sent when the
 163   // gesture ends.
 164   BOOL gestureBeginPinchSent_;
 165
 166   // If true then escape key down events are suppressed until the first escape
 167   // key up event. (The up event is suppressed as well). This is used by the
 168   // flash fullscreen code to avoid sending a key up event without a matching
 169   // key down event.
 170   BOOL suppressNextEscapeKeyUp_;
 171
 172   // The set of key codes from key down events that we haven't seen the matching
 173   // key up events yet.
 174   // Used for filtering out non-matching NSKeyUp events.
 175   std::set<unsigned short> keyDownCodes_;
 176
 177   // The filter used to guide touch events towards a horizontal or vertical
 178   // orientation.
 179   content::MouseWheelRailsFilterMac mouseWheelFilter_;
 180 }
 181
 182 @property(nonatomic, readonly) NSRange selectedRange;
 183 @property(nonatomic, readonly) BOOL suppressNextEscapeKeyUp;
 184
 185 - (void)setCanBeKeyView:(BOOL)can;
 186 - (void)setCloseOnDeactivate:(BOOL)b;
 187 - (void)setOpaque:(BOOL)opaque;
 188 - (void)setToolTipAtMousePoint:(NSString *)string;
 189 // True for always-on-top special windows (e.g. Balloons and Panels).
 190 - (BOOL)acceptsMouseEventsWhenInactive;
 191 // Cancel ongoing composition (abandon the marked text).
 192 - (void)cancelComposition;
 193 // Confirm ongoing composition.
 194 - (void)confirmComposition;
 195 // Enables or disables plugin IME.
 196 - (void)setPluginImeActive:(BOOL)active;
 197 // Updates the current plugin focus state.
 198 - (void)pluginFocusChanged:(BOOL)focused forPlugin:(int)pluginId;
 199 // Evaluates the event in the context of plugin IME, if plugin IME is enabled.
 200 // Returns YES if the event was handled.
 201 - (BOOL)postProcessEventForPluginIme:(NSEvent*)event;
 202 - (void)updateCursor:(NSCursor*)cursor;
 203 - (NSRect)firstViewRectForCharacterRange:(NSRange)theRange
 204                              actualRange:(NSRangePointer)actualRange;
 205 @end
 206
 207 namespace content {
 208
 209 ///////////////////////////////////////////////////////////////////////////////
 210 // RenderWidgetHostViewMac
 211 //
 212 //  An object representing the "View" of a rendered web page. This object is
 213 //  responsible for displaying the content of the web page, and integrating with
 214 //  the Cocoa view system. It is the implementation of the RenderWidgetHostView
 215 //  that the cross-platform RenderWidgetHost object uses
 216 //  to display the data.
 217 //
 218 //  Comment excerpted from render_widget_host.h:
 219 //
 220 //    "The lifetime of the RenderWidgetHost* is tied to the render process.
 221 //     If the render process dies, the RenderWidgetHost* goes away and all
 222 //     references to it must become NULL."
 223 //
 224 // RenderWidgetHostView class hierarchy described in render_widget_host_view.h.
 225 class CONTENT_EXPORT RenderWidgetHostViewMac
 226     : public RenderWidgetHostViewBase,
 227       public DelegatedFrameHostClient,
 228       public ui::AcceleratedWidgetMacNSView,
 229       public IPC::Sender,
 230       public gfx::DisplayObserver {
 231  public:
 232   // The view will associate itself with the given widget. The native view must
 233   // be hooked up immediately to the view hierarchy, or else when it is
 234   // deleted it will delete this out from under the caller.
 235   //
 236   // When |is_guest_view_hack| is true, this view isn't really the view for
 237   // the |widget|, a RenderWidgetHostViewGuest is.
 238   // TODO(lazyboy): Remove |is_guest_view_hack| once BrowserPlugin has migrated
 239   // to use RWHVChildFrame (http://crbug.com/330264).
 240   RenderWidgetHostViewMac(RenderWidgetHost* widget, bool is_guest_view_hack);
 241   ~RenderWidgetHostViewMac() override;
 242
 243   RenderWidgetHostViewCocoa* cocoa_view() const { return cocoa_view_; }
 244
 245   // |delegate| is used to separate out the logic from the NSResponder delegate.
 246   // |delegate| is retained by this class.
 247   // |delegate| should be set at most once.
 248   CONTENT_EXPORT void SetDelegate(
 249     NSObject<RenderWidgetHostViewMacDelegate>* delegate);
 250   void SetAllowPauseForResizeOrRepaint(bool allow);
 251
 252   // RenderWidgetHostView implementation.
 253   bool OnMessageReceived(const IPC::Message& msg) override;
 254   void InitAsChild(gfx::NativeView parent_view) override;
 255   RenderWidgetHost* GetRenderWidgetHost() const override;
 256   void SetSize(const gfx::Size& size) override;
 257   void SetBounds(const gfx::Rect& rect) override;
 258   gfx::Vector2dF GetLastScrollOffset() const override;
 259   gfx::NativeView GetNativeView() const override;
 260   gfx::NativeViewId GetNativeViewId() const override;
 261   gfx::NativeViewAccessible GetNativeViewAccessible() override;
 262   bool HasFocus() const override;
 263   bool IsSurfaceAvailableForCopy() const override;
 264   void Show() override;
 265   void Hide() override;
 266   bool IsShowing() override;
 267   void WasUnOccluded() override;
 268   void WasOccluded() override;
 269   gfx::Rect GetViewBounds() const override;
 270   void SetShowingContextMenu(bool showing) override;
 271   void SetActive(bool active) override;
 272   void SetWindowVisibility(bool visible) override;
 273   void WindowFrameChanged() override;
 274   void ShowDefinitionForSelection() override;
 275   bool SupportsSpeech() const override;
 276   void SpeakSelection() override;
 277   bool IsSpeaking() const override;
 278   void StopSpeaking() override;
 279   void SetBackgroundColor(SkColor color) override;
 280
 281   // Implementation of RenderWidgetHostViewBase.
 282   void InitAsPopup(RenderWidgetHostView* parent_host_view,
 283                    const gfx::Rect& pos) override;
 284   void InitAsFullscreen(RenderWidgetHostView* reference_host_view) override;
 285   void MovePluginWindows(const std::vector<WebPluginGeometry>& moves) override;
 286   void Focus() override;
 287   void Blur() override;
 288   void UpdateCursor(const WebCursor& cursor) override;
 289   void SetIsLoading(bool is_loading) override;
 290   void TextInputTypeChanged(ui::TextInputType type,
 291                             ui::TextInputMode input_mode,
 292                             bool can_compose_inline,
 293                             int flags) override;
 294   void ImeCancelComposition() override;
 295   void ImeCompositionRangeChanged(
 296       const gfx::Range& range,
 297       const std::vector<gfx::Rect>& character_bounds) override;
 298   void RenderProcessGone(base::TerminationStatus status,
 299                          int error_code) override;
 300   void RenderWidgetHostGone() override;
 301   void Destroy() override;
 302   void SetTooltipText(const base::string16& tooltip_text) override;
 303   void SelectionChanged(const base::string16& text,
 304                         size_t offset,
 305                         const gfx::Range& range) override;
 306   void SelectionBoundsChanged(
 307       const ViewHostMsg_SelectionBounds_Params& params) override;
 308   void CopyFromCompositingSurface(const gfx::Rect& src_subrect,
 309                                   const gfx::Size& dst_size,
 310                                   ReadbackRequestCallback& callback,
 311                                   SkColorType color_type) override;
 312   void CopyFromCompositingSurfaceToVideoFrame(
 313       const gfx::Rect& src_subrect,
 314       const scoped_refptr<media::VideoFrame>& target,
 315       const base::Callback<void(bool)>& callback) override;
 316   bool CanCopyToVideoFrame() const override;
 317   bool CanSubscribeFrame() const override;
 318   void BeginFrameSubscription(
 319       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) override;
 320   void EndFrameSubscription() override;
 321   void OnSwapCompositorFrame(uint32 output_surface_id,
 322                              scoped_ptr<cc::CompositorFrame> frame) override;
 323   BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
 324       BrowserAccessibilityDelegate* delegate) override;
 325   gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds) override;
 326   void AccessibilityShowMenu(const gfx::Point& point) override;
 327   bool PostProcessEventForPluginIme(
 328       const NativeWebKeyboardEvent& event) override;
 329
 330   bool HasAcceleratedSurface(const gfx::Size& desired_size) override;
 331   void GetScreenInfo(blink::WebScreenInfo* results) override;
 332   gfx::Rect GetBoundsInRootWindow() override;
 333   gfx::GLSurfaceHandle GetCompositingSurface() override;
 334
 335   bool LockMouse() override;
 336   void UnlockMouse() override;
 337   void WheelEventAck(const blink::WebMouseWheelEvent& event,
 338                      InputEventAckState ack_result) override;
 339
 340   // IPC::Sender implementation.
 341   bool Send(IPC::Message* message) override;
 342
 343   SkColorType PreferredReadbackFormat() override;
 344
 345   // gfx::DisplayObserver implementation.
 346   void OnDisplayAdded(const gfx::Display& new_display) override;
 347   void OnDisplayRemoved(const gfx::Display& old_display) override;
 348   void OnDisplayMetricsChanged(const gfx::Display& display,
 349                                uint32_t metrics) override;
 350
 351   // Forwards the mouse event to the renderer.
 352   void ForwardMouseEvent(const blink::WebMouseEvent& event);
 353
 354   void KillSelf();
 355
 356   void SetTextInputActive(bool active);
 357
 358   // Sends completed plugin IME notification and text back to the renderer.
 359   void PluginImeCompositionCompleted(const base::string16& text, int plugin_id);
 360
 361   const std::string& selected_text() const { return selected_text_; }
 362
 363   // Returns true and stores first rectangle for character range if the
 364   // requested |range| is already cached, otherwise returns false.
 365   // Exposed for testing.
 366   CONTENT_EXPORT bool GetCachedFirstRectForCharacterRange(
 367       NSRange range, NSRect* rect, NSRange* actual_range);
 368
 369   // Returns true if there is line break in |range| and stores line breaking
 370   // point to |line_breaking_point|. The |line_break_point| is valid only if
 371   // this function returns true.
 372   bool GetLineBreakIndex(const std::vector<gfx::Rect>& bounds,
 373                          const gfx::Range& range,
 374                          size_t* line_break_point);
 375
 376   // Returns composition character boundary rectangle. The |range| is
 377   // composition based range. Also stores |actual_range| which is corresponding
 378   // to actually used range for returned rectangle.
 379   gfx::Rect GetFirstRectForCompositionRange(const gfx::Range& range,
 380                                             gfx::Range* actual_range);
 381
 382   // Converts from given whole character range to composition oriented range. If
 383   // the conversion failed, return gfx::Range::InvalidRange.
 384   gfx::Range ConvertCharacterRangeToCompositionRange(
 385       const gfx::Range& request_range);
 386
 387   WebContents* GetWebContents();
 388
 389   // These member variables should be private, but the associated ObjC class
 390   // needs access to them and can't be made a friend.
 391
 392   // The associated Model.  Can be NULL if Destroy() is called when
 393   // someone (other than superview) has retained |cocoa_view_|.
 394   RenderWidgetHostImpl* render_widget_host_;
 395
 396   // Current text input type.
 397   ui::TextInputType text_input_type_;
 398   bool can_compose_inline_;
 399
 400   // The background CoreAnimation layer which is hosted by |cocoa_view_|.
 401   base::scoped_nsobject<CALayer> background_layer_;
 402
 403   // The state of |delegated_frame_host_| and |browser_compositor_| to
 404   // manage being visible, hidden, or occluded.
 405   enum BrowserCompositorViewState {
 406     // Effects:
 407     // - |browser_compositor_| exists and |delegated_frame_host_| is
 408     //    visible.
 409     // Happens when:
 410     // - |render_widet_host_| is in the visible state (this includes when
 411     //   the tab isn't visible, but tab capture is enabled).
 412     BrowserCompositorActive,
 413     // Effects:
 414     // - |browser_compositor_| exists, but |delegated_frame_host_| has
 415     //   been hidden.
 416     // Happens when:
 417     // - The |render_widget_host_| is hidden, but |cocoa_view_| is still in the
 418     //   NSWindow hierarchy.
 419     // - This happens when |cocoa_view_| is hidden (minimized, on another
 420     //   occluded by other windows, etc). The |browser_compositor_| and
 421     //   its CALayers are kept around so that we will have content to show when
 422     //   we are un-occluded.
 423     BrowserCompositorSuspended,
 424     // Effects:
 425     // - |browser_compositor_| has been destroyed and
 426     //   |delegated_frame_host_| has been hidden.
 427     // Happens when:
 428     // - The |render_widget_host_| is hidden or dead, and |cocoa_view_| is not
 429     //   attached to a NSWindow.
 430     // - This happens for backgrounded tabs.
 431     BrowserCompositorDestroyed,
 432   };
 433   BrowserCompositorViewState browser_compositor_state_;
 434
 435   // Delegated frame management and compositior.
 436   scoped_ptr<DelegatedFrameHost> delegated_frame_host_;
 437   scoped_ptr<ui::Layer> root_layer_;
 438
 439   // Container for ui::Compositor the CALayer tree drawn by it.
 440   scoped_ptr<BrowserCompositorMac> browser_compositor_;
 441
 442   // Placeholder that is allocated while browser_compositor_ is NULL,
 443   // indicating that a BrowserCompositorViewMac may be allocated. This is to
 444   // help in recycling the internals of BrowserCompositorViewMac.
 445   scoped_ptr<BrowserCompositorMacPlaceholder>
 446       browser_compositor_placeholder_;
 447
 448   NSWindow* pepper_fullscreen_window() const {
 449     return pepper_fullscreen_window_;
 450   }
 451
 452   CONTENT_EXPORT void release_pepper_fullscreen_window_for_testing();
 453
 454   RenderWidgetHostViewMac* fullscreen_parent_host_view() const {
 455     return fullscreen_parent_host_view_;
 456   }
 457
 458   int window_number() const;
 459
 460   // The scale factor for the screen that the view is currently on.
 461   float ViewScaleFactor() const;
 462
 463   // Update the scale factor for the backing store and for any CALayers.
 464   void UpdateBackingStoreScaleFactor();
 465
 466   // Ensure that the display link is associated with the correct display.
 467   void UpdateDisplayLink();
 468
 469   void PauseForPendingResizeOrRepaintsAndDraw();
 470
 471   // DelegatedFrameHostClient implementation.
 472   ui::Layer* DelegatedFrameHostGetLayer() const override;
 473   bool DelegatedFrameHostIsVisible() const override;
 474   gfx::Size DelegatedFrameHostDesiredSizeInDIP() const override;
 475   bool DelegatedFrameCanCreateResizeLock() const override;
 476   scoped_ptr<ResizeLock> DelegatedFrameHostCreateResizeLock(
 477       bool defer_compositor_lock) override;
 478   void DelegatedFrameHostResizeLockWasReleased() override;
 479   void DelegatedFrameHostSendCompositorSwapAck(
 480       int output_surface_id,
 481       const cc::CompositorFrameAck& ack) override;
 482   void DelegatedFrameHostSendReclaimCompositorResources(
 483       int output_surface_id,
 484       const cc::CompositorFrameAck& ack) override;
 485   void DelegatedFrameHostOnLostCompositorResources() override;
 486   void DelegatedFrameHostUpdateVSyncParameters(
 487       const base::TimeTicks& timebase,
 488       const base::TimeDelta& interval) override;
 489
 490   // AcceleratedWidgetMacNSView implementation.
 491   NSView* AcceleratedWidgetGetNSView() const override;
 492   bool AcceleratedWidgetShouldIgnoreBackpressure() const override;
 493   void AcceleratedWidgetSwapCompleted(
 494       const std::vector<ui::LatencyInfo>& latency_info) override;
 495   void AcceleratedWidgetHitError() override;
 496
 497   // Transition from being in the Suspended state to being in the Destroyed
 498   // state, if appropriate (see BrowserCompositorViewState for details).
 499   void DestroySuspendedBrowserCompositorViewIfNeeded();
 500
 501  private:
 502   friend class RenderWidgetHostViewMacTest;
 503
 504   // Returns whether this render view is a popup (autocomplete window).
 505   bool IsPopup() const;
 506
 507   // Shuts down the render_widget_host_.  This is a separate function so we can
 508   // invoke it from the message loop.
 509   void ShutdownHost();
 510
 511   // Tear down all components of the browser compositor in an order that will
 512   // ensure no dangling references.
 513   void ShutdownBrowserCompositor();
 514
 515   // The state of the the browser compositor and delegated frame host. See
 516   // BrowserCompositorViewState for details.
 517   void EnsureBrowserCompositorView();
 518   void SuspendBrowserCompositorView();
 519   void DestroyBrowserCompositorView();
 520
 521   // IPC message handlers.
 522   void OnPluginFocusChanged(bool focused, int plugin_id);
 523   void OnStartPluginIme();
 524   void OnGetRenderedTextCompleted(const std::string& text);
 525
 526   // Send updated vsync parameters to the renderer.
 527   void SendVSyncParametersToRenderer();
 528
 529   // Dispatches a TTS session.
 530   void SpeakText(const std::string& text);
 531
 532   // The associated view. This is weak and is inserted into the view hierarchy
 533   // to own this RenderWidgetHostViewMac object. Set to nil at the start of the
 534   // destructor.
 535   RenderWidgetHostViewCocoa* cocoa_view_;
 536
 537   // Indicates if the page is loading.
 538   bool is_loading_;
 539
 540   // Whether it's allowed to pause waiting for a new frame.
 541   bool allow_pause_for_resize_or_repaint_;
 542
 543   // The last scroll offset of the view.
 544   gfx::Vector2dF last_scroll_offset_;
 545
 546   // The text to be shown in the tooltip, supplied by the renderer.
 547   base::string16 tooltip_text_;
 548
 549   // True when this view acts as a platform view hack for a
 550   // RenderWidgetHostViewGuest.
 551   bool is_guest_view_hack_;
 552
 553   // selected text on the renderer.
 554   std::string selected_text_;
 555
 556   // The window used for popup widgets.
 557   base::scoped_nsobject<NSWindow> popup_window_;
 558
 559   // The fullscreen window used for pepper flash.
 560   base::scoped_nsobject<NSWindow> pepper_fullscreen_window_;
 561   base::scoped_nsobject<FullscreenWindowManager> fullscreen_window_manager_;
 562   // Our parent host view, if this is fullscreen.  NULL otherwise.
 563   RenderWidgetHostViewMac* fullscreen_parent_host_view_;
 564
 565   // Display link for getting vsync info.
 566   scoped_refptr<DisplayLinkMac> display_link_;
 567
 568   // The current VSync timebase and interval. This is zero until the first call
 569   // to SendVSyncParametersToRenderer(), and refreshed regularly thereafter.
 570   base::TimeTicks vsync_timebase_;
 571   base::TimeDelta vsync_interval_;
 572
 573   // The current composition character range and its bounds.
 574   gfx::Range composition_range_;
 575   std::vector<gfx::Rect> composition_bounds_;
 576
 577   // The current caret bounds.
 578   gfx::Rect caret_rect_;
 579
 580   // Factory used to safely scope delayed calls to ShutdownHost().
 581   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 582
 583   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 584 };
 585
 586 }  // namespace content
 587
 588 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_