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