content/renderer/render_view_impl.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_RENDERER_RENDER_VIEW_IMPL_H_
   6 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
   7
   8 #include <deque>
   9 #include <map>
  10 #include <set>
  11 #include <string>
  12 #include <vector>
  13
  14 #include "base/basictypes.h"
  15 #include "base/gtest_prod_util.h"
  16 #include "base/id_map.h"
  17 #include "base/memory/linked_ptr.h"
  18 #include "base/memory/weak_ptr.h"
  19 #include "base/observer_list.h"
  20 #include "base/process/process.h"
  21 #include "base/strings/string16.h"
  22 #include "base/timer/timer.h"
  23 #include "build/build_config.h"
  24 #include "cc/input/top_controls_state.h"
  25 #include "cc/resources/shared_bitmap.h"
  26 #include "content/common/content_export.h"
  27 #include "content/common/drag_event_source_info.h"
  28 #include "content/common/edit_command.h"
  29 #include "content/common/frame_message_enums.h"
  30 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
  31 #include "content/common/navigation_gesture.h"
  32 #include "content/common/navigation_params.h"
  33 #include "content/common/view_message_enums.h"
  34 #include "content/public/common/page_zoom.h"
  35 #include "content/public/common/referrer.h"
  36 #include "content/public/common/renderer_preferences.h"
  37 #include "content/public/common/stop_find_action.h"
  38 #include "content/public/common/top_controls_state.h"
  39 #include "content/public/common/web_preferences.h"
  40 #include "content/public/renderer/render_view.h"
  41 #include "content/renderer/mouse_lock_dispatcher.h"
  42 #include "content/renderer/render_frame_impl.h"
  43 #include "content/renderer/render_widget.h"
  44 #include "content/renderer/stats_collection_observer.h"
  45 #include "ipc/ipc_platform_file.h"
  46 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
  47 #include "third_party/WebKit/public/web/WebAXObject.h"
  48 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
  49 #include "third_party/WebKit/public/web/WebDataSource.h"
  50 #include "third_party/WebKit/public/web/WebElement.h"
  51 #include "third_party/WebKit/public/web/WebHistoryItem.h"
  52 #include "third_party/WebKit/public/web/WebIconURL.h"
  53 #include "third_party/WebKit/public/web/WebInputEvent.h"
  54 #include "third_party/WebKit/public/web/WebNavigationType.h"
  55 #include "third_party/WebKit/public/web/WebNode.h"
  56 #include "third_party/WebKit/public/web/WebPageSerializerClient.h"
  57 #include "third_party/WebKit/public/web/WebPageVisibilityState.h"
  58 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  59 #include "third_party/WebKit/public/web/WebViewClient.h"
  60 #include "ui/base/window_open_disposition.h"
  61 #include "ui/surface/transport_dib.h"
  62
  63 #if defined(OS_ANDROID)
  64 #include "content/renderer/android/content_detector.h"
  65 #include "content/renderer/android/renderer_date_time_picker.h"
  66 #include "third_party/WebKit/public/web/WebContentDetectionResult.h"
  67 #endif
  68
  69 #if defined(COMPILER_MSVC)
  70 // RenderViewImpl is a diamond-shaped hierarchy, with WebWidgetClient at the
  71 // root. VS warns when we inherit the WebWidgetClient method implementations
  72 // from RenderWidget.  It's safe to ignore that warning.
  73 #pragma warning(disable: 4250)
  74 #endif
  75
  76 class PepperDeviceTest;
  77 class SkBitmap;
  78 struct PP_NetAddress_Private;
  79 struct FrameMsg_Navigate_Params;
  80 struct ViewMsg_PostMessage_Params;
  81 struct ViewMsg_StopFinding_Params;
  82
  83 namespace base {
  84 class CommandLine;
  85 }
  86
  87 namespace blink {
  88 class WebApplicationCacheHost;
  89 class WebApplicationCacheHostClient;
  90 class WebDOMMessageEvent;
  91 class WebDataSource;
  92 class WebDateTimeChooserCompletion;
  93 class WebDragData;
  94 class WebGestureEvent;
  95 class WebIconURL;
  96 class WebImage;
  97 class WebPeerConnection00Handler;
  98 class WebPeerConnection00HandlerClient;
  99 class WebMouseEvent;
 100 class WebPeerConnectionHandler;
 101 class WebPeerConnectionHandlerClient;
 102 class WebSocketStreamHandle;
 103 class WebSpeechRecognizer;
 104 class WebStorageNamespace;
 105 class WebTouchEvent;
 106 class WebURLRequest;
 107 struct WebActiveWheelFlingParameters;
 108 struct WebDateTimeChooserParams;
 109 struct WebFileChooserParams;
 110 struct WebFindOptions;
 111 struct WebMediaPlayerAction;
 112 struct WebPluginAction;
 113 struct WebPoint;
 114 struct WebWindowFeatures;
 115
 116 #if defined(OS_ANDROID)
 117 class WebHitTestResult;
 118 #endif
 119 }  // namespace blink
 120
 121 namespace content {
 122
 123 class BrowserPluginManager;
 124 class DevToolsAgent;
 125 class DocumentState;
 126 class HistoryController;
 127 class HistoryEntry;
 128 class ImageResourceFetcher;
 129 class MouseLockDispatcher;
 130 class NavigationState;
 131 class PageState;
 132 class PepperPluginInstanceImpl;
 133 class RenderViewImplTest;
 134 class RenderViewObserver;
 135 class RenderViewTest;
 136 class RendererDateTimePicker;
 137 class RendererWebColorChooserImpl;
 138 class SpeechRecognitionDispatcher;
 139 class WebPluginDelegateProxy;
 140 struct DropData;
 141 struct FaviconURL;
 142 struct FileChooserParams;
 143 struct FileChooserFileInfo;
 144 struct RenderViewImplParams;
 145
 146 #if defined(OS_ANDROID)
 147 class WebMediaPlayerProxyAndroid;
 148 #endif
 149
 150 //
 151 // RenderView is an object that manages a WebView object, and provides a
 152 // communication interface with an embedding application process.
 153 //
 154 class CONTENT_EXPORT RenderViewImpl
 155     : public RenderWidget,
 156       NON_EXPORTED_BASE(public blink::WebViewClient),
 157       NON_EXPORTED_BASE(public blink::WebPageSerializerClient),
 158       public RenderView,
 159       public base::SupportsWeakPtr<RenderViewImpl> {
 160  public:
 161   // Creates a new RenderView. |opener_id| is the routing ID of the RenderView
 162   // responsible for creating this RenderView. Note that if the original opener
 163   // has been closed, |window_was_created_with_opener| will be true and
 164   // |opener_id| will be MSG_ROUTING_NONE. When |swapped_out| is true, the
 165   // |proxy_routing_id| is specified, so a RenderFrameProxy can be created for
 166   // this RenderView's main RenderFrame.
 167   static RenderViewImpl* Create(int32 opener_id,
 168                                 bool window_was_created_with_opener,
 169                                 const RendererPreferences& renderer_prefs,
 170                                 const WebPreferences& webkit_prefs,
 171                                 int32 routing_id,
 172                                 int32 main_frame_routing_id,
 173                                 int32 surface_id,
 174                                 int64 session_storage_namespace_id,
 175                                 const base::string16& frame_name,
 176                                 bool is_renderer_created,
 177                                 bool swapped_out,
 178                                 int32 proxy_routing_id,
 179                                 bool hidden,
 180                                 bool never_visible,
 181                                 int32 next_page_id,
 182                                 const blink::WebScreenInfo& screen_info);
 183
 184   // Used by content_layouttest_support to hook into the creation of
 185   // RenderViewImpls.
 186   static void InstallCreateHook(
 187       RenderViewImpl* (*create_render_view_impl)(RenderViewImplParams*));
 188
 189   // Returns the RenderViewImpl containing the given WebView.
 190   static RenderViewImpl* FromWebView(blink::WebView* webview);
 191
 192   // Returns the RenderViewImpl for the given routing ID.
 193   static RenderViewImpl* FromRoutingID(int routing_id);
 194
 195   static size_t GetRenderViewCount();
 196
 197   // May return NULL when the view is closing.
 198   blink::WebView* webview() const;
 199
 200   int history_list_offset() const { return history_list_offset_; }
 201
 202   const WebPreferences& webkit_preferences() const {
 203     return webkit_preferences_;
 204   }
 205
 206   const RendererPreferences& renderer_preferences() const {
 207     return renderer_preferences_;
 208   }
 209
 210   void set_send_content_state_immediately(bool value) {
 211     send_content_state_immediately_ = value;
 212   }
 213
 214   MouseLockDispatcher* mouse_lock_dispatcher() {
 215     return mouse_lock_dispatcher_;
 216   }
 217
 218   HistoryController* history_controller() {
 219     return history_controller_.get();
 220   }
 221
 222   // Lazily initialize this view's BrowserPluginManager and return it.
 223   BrowserPluginManager* GetBrowserPluginManager();
 224
 225   // Functions to add and remove observers for this object.
 226   void AddObserver(RenderViewObserver* observer);
 227   void RemoveObserver(RenderViewObserver* observer);
 228
 229   // Returns the StatsCollectionObserver associated with this view, or NULL
 230   // if one wasn't created;
 231   StatsCollectionObserver* GetStatsCollectionObserver() {
 232     return stats_collection_observer_.get();
 233   }
 234
 235   // Adds the given file chooser request to the file_chooser_completion_ queue
 236   // (see that var for more) and requests the chooser be displayed if there are
 237   // no other waiting items in the queue.
 238   //
 239   // Returns true if the chooser was successfully scheduled. False means we
 240   // didn't schedule anything.
 241   bool ScheduleFileChooser(const FileChooserParams& params,
 242                            blink::WebFileChooserCompletion* completion);
 243
 244 #if defined(OS_ANDROID)
 245   void DismissDateTimeDialog();
 246 #endif
 247
 248   bool is_loading() const { return frames_in_progress_ != 0; }
 249
 250   void FrameDidStartLoading(blink::WebFrame* frame);
 251   void FrameDidStopLoading(blink::WebFrame* frame);
 252
 253   // Plugin-related functions --------------------------------------------------
 254
 255 #if defined(ENABLE_PLUGINS)
 256   // Get/set the plugin which will be used as to handle document find requests.
 257   void set_plugin_find_handler(PepperPluginInstanceImpl* plugin) {
 258     plugin_find_handler_ = plugin;
 259   }
 260   PepperPluginInstanceImpl* plugin_find_handler() {
 261     return plugin_find_handler_;
 262   }
 263
 264   PepperPluginInstanceImpl* focused_pepper_plugin() {
 265     return focused_pepper_plugin_;
 266   }
 267   PepperPluginInstanceImpl* pepper_last_mouse_event_target() {
 268     return pepper_last_mouse_event_target_;
 269   }
 270   void set_pepper_last_mouse_event_target(PepperPluginInstanceImpl* plugin) {
 271     pepper_last_mouse_event_target_ = plugin;
 272   }
 273
 274 #if defined(OS_MACOSX) || defined(OS_WIN)
 275   // Informs the render view that the given plugin has gained or lost focus.
 276   void PluginFocusChanged(bool focused, int plugin_id);
 277 #endif
 278
 279 #if defined(OS_MACOSX)
 280   // Starts plugin IME.
 281   void StartPluginIme();
 282 #endif
 283
 284   // Indicates that the given instance has been created.
 285   void PepperInstanceCreated(PepperPluginInstanceImpl* instance);
 286
 287   // Indicates that the given instance is being destroyed. This is called from
 288   // the destructor, so it's important that the instance is not dereferenced
 289   // from this call.
 290   void PepperInstanceDeleted(PepperPluginInstanceImpl* instance);
 291
 292   // Notification that the given plugin is focused or unfocused.
 293   void PepperFocusChanged(PepperPluginInstanceImpl* instance, bool focused);
 294
 295   void RegisterPluginDelegate(WebPluginDelegateProxy* delegate);
 296   void UnregisterPluginDelegate(WebPluginDelegateProxy* delegate);
 297 #endif  // ENABLE_PLUGINS
 298
 299   void TransferActiveWheelFlingAnimation(
 300       const blink::WebActiveWheelFlingParameters& params);
 301
 302   // Returns true if the focused element is editable text from the perspective
 303   // of IME support (also used for on-screen keyboard). Works correctly inside
 304   // supported PPAPI plug-ins.
 305   bool HasIMETextFocus();
 306
 307   // Callback for use with GetWindowSnapshot.
 308   typedef base::Callback<void(
 309       const gfx::Size&, const std::vector<unsigned char>&)>
 310       WindowSnapshotCallback;
 311
 312   void GetWindowSnapshot(const WindowSnapshotCallback& callback);
 313
 314   // Dispatches the current navigation state to the browser. Called on a
 315   // periodic timer so we don't send too many messages.
 316   void SyncNavigationState();
 317
 318   // Returns the length of the session history of this RenderView. Note that
 319   // this only coincides with the actual length of the session history if this
 320   // RenderView is the currently active RenderView of a WebContents.
 321   unsigned GetLocalSessionHistoryLengthForTesting() const;
 322
 323   // Invokes OnSetFocus and marks the widget as active depending on the value
 324   // of |enable|. This is used for layout tests that need to control the focus
 325   // synchronously from the renderer.
 326   void SetFocusAndActivateForTesting(bool enable);
 327
 328   // Change the device scale factor and force the compositor to resize.
 329   void SetDeviceScaleFactorForTesting(float factor);
 330
 331   // Change the device ICC color profile while running a layout test.
 332   void SetDeviceColorProfileForTesting(const std::vector<char>& color_profile);
 333   virtual void ResetDeviceColorProfileForTesting() override;
 334
 335   // Used to force the size of a window when running layout tests.
 336   void ForceResizeForTesting(const gfx::Size& new_size);
 337
 338   void UseSynchronousResizeModeForTesting(bool enable);
 339
 340   // Control autoresize mode.
 341   void EnableAutoResizeForTesting(const gfx::Size& min_size,
 342                                   const gfx::Size& max_size);
 343   void DisableAutoResizeForTesting(const gfx::Size& new_size);
 344
 345   // IPC::Listener implementation ----------------------------------------------
 346
 347   virtual bool OnMessageReceived(const IPC::Message& msg) override;
 348
 349   // blink::WebWidgetClient implementation ------------------------------------
 350
 351   // Most methods are handled by RenderWidget.
 352   virtual void didFocus();
 353   virtual void didBlur();
 354   virtual void show(blink::WebNavigationPolicy policy);
 355   virtual void runModal();
 356   virtual bool enterFullScreen();
 357   virtual void exitFullScreen();
 358   virtual bool requestPointerLock();
 359   virtual void requestPointerUnlock();
 360   virtual bool isPointerLocked();
 361   virtual void didHandleGestureEvent(const blink::WebGestureEvent& event,
 362                                      bool event_cancelled) override;
 363   virtual void initializeLayerTreeView() override;
 364
 365   // blink::WebViewClient implementation --------------------------------------
 366
 367   virtual blink::WebView* createView(blink::WebLocalFrame* creator,
 368                                      const blink::WebURLRequest& request,
 369                                      const blink::WebWindowFeatures& features,
 370                                      const blink::WebString& frame_name,
 371                                      blink::WebNavigationPolicy policy,
 372                                      bool suppress_opener);
 373   virtual blink::WebWidget* createPopupMenu(blink::WebPopupType popup_type);
 374   virtual blink::WebStorageNamespace* createSessionStorageNamespace();
 375   virtual void printPage(blink::WebLocalFrame* frame);
 376   virtual bool enumerateChosenDirectory(
 377       const blink::WebString& path,
 378       blink::WebFileChooserCompletion* chooser_completion);
 379   virtual void saveImageFromDataURL(const blink::WebString& data_url);
 380   virtual void didCancelCompositionOnSelectionChange();
 381   virtual bool handleCurrentKeyboardEvent();
 382   virtual bool runFileChooser(
 383       const blink::WebFileChooserParams& params,
 384       blink::WebFileChooserCompletion* chooser_completion);
 385   void SetValidationMessageDirection(base::string16* main_text,
 386                                      blink::WebTextDirection main_text_hint,
 387                                      base::string16* sub_text,
 388                                      blink::WebTextDirection sub_text_hint);
 389   virtual void showValidationMessage(const blink::WebRect& anchor_in_root_view,
 390                                      const blink::WebString& main_text,
 391                                      blink::WebTextDirection main_text_hint,
 392                                      const blink::WebString& sub_text,
 393                                      blink::WebTextDirection hint) override;
 394   virtual void hideValidationMessage() override;
 395   virtual void moveValidationMessage(
 396       const blink::WebRect& anchor_in_root_view) override;
 397   virtual void setStatusText(const blink::WebString& text);
 398   virtual void setMouseOverURL(const blink::WebURL& url);
 399   virtual void setKeyboardFocusURL(const blink::WebURL& url);
 400   virtual void startDragging(blink::WebLocalFrame* frame,
 401                              const blink::WebDragData& data,
 402                              blink::WebDragOperationsMask mask,
 403                              const blink::WebImage& image,
 404                              const blink::WebPoint& imageOffset);
 405   virtual bool acceptsLoadDrops();
 406   virtual void focusNext();
 407   virtual void focusPrevious();
 408   virtual void focusedNodeChanged(const blink::WebNode& node);
 409   virtual void didUpdateLayout();
 410 #if defined(OS_ANDROID) || defined(TOOLKIT_VIEWS)
 411   virtual bool didTapMultipleTargets(
 412       const blink::WebSize& inner_viewport_offset,
 413       const blink::WebRect& touch_rect,
 414       const blink::WebVector<blink::WebRect>& target_rects);
 415 #endif
 416   virtual blink::WebString acceptLanguages();
 417   virtual void navigateBackForwardSoon(int offset);
 418   virtual int historyBackListCount();
 419   virtual int historyForwardListCount();
 420   virtual blink::WebSpeechRecognizer* speechRecognizer();
 421   virtual void zoomLimitsChanged(double minimum_level, double maximum_level);
 422   virtual void zoomLevelChanged();
 423   virtual double zoomLevelToZoomFactor(double zoom_level) const;
 424   virtual double zoomFactorToZoomLevel(double factor) const;
 425   virtual void registerProtocolHandler(const blink::WebString& scheme,
 426                                        const blink::WebURL& url,
 427                                        const blink::WebString& title);
 428   virtual void unregisterProtocolHandler(const blink::WebString& scheme,
 429                                          const blink::WebURL& url);
 430   virtual blink::WebPageVisibilityState visibilityState() const;
 431   virtual blink::WebPushClient* webPushClient();
 432   virtual void draggableRegionsChanged();
 433
 434 #if defined(OS_ANDROID)
 435   virtual void scheduleContentIntent(const blink::WebURL& intent);
 436   virtual void cancelScheduledContentIntents();
 437   virtual blink::WebContentDetectionResult detectContentAround(
 438       const blink::WebHitTestResult& touch_hit);
 439
 440   // Only used on Android since all other platforms implement
 441   // date and time input fields using MULTIPLE_FIELDS_UI
 442   virtual bool openDateTimeChooser(const blink::WebDateTimeChooserParams&,
 443                                    blink::WebDateTimeChooserCompletion*);
 444   virtual void didScrollWithKeyboard(const blink::WebSize& delta);
 445 #endif
 446
 447   // blink::WebPageSerializerClient implementation ----------------------------
 448
 449   virtual void didSerializeDataForFrame(
 450       const blink::WebURL& frame_url,
 451       const blink::WebCString& data,
 452       PageSerializationStatus status) override;
 453
 454   // RenderView implementation -------------------------------------------------
 455
 456   virtual bool Send(IPC::Message* message) override;
 457   virtual RenderFrameImpl* GetMainRenderFrame() override;
 458   virtual int GetRoutingID() const override;
 459   virtual gfx::Size GetSize() const override;
 460   virtual WebPreferences& GetWebkitPreferences() override;
 461   virtual void SetWebkitPreferences(const WebPreferences& preferences) override;
 462   virtual blink::WebView* GetWebView() override;
 463   virtual blink::WebElement GetFocusedElement() const override;
 464   virtual bool IsEditableNode(const blink::WebNode& node) const override;
 465   virtual bool NodeContainsPoint(const blink::WebNode& node,
 466                                  const gfx::Point& point) const override;
 467   virtual bool ShouldDisplayScrollbars(int width, int height) const override;
 468   virtual int GetEnabledBindings() const override;
 469   virtual bool GetContentStateImmediately() const override;
 470   virtual blink::WebPageVisibilityState GetVisibilityState() const override;
 471   virtual void DidStartLoading() override;
 472   virtual void DidStopLoading() override;
 473   virtual void Repaint(const gfx::Size& size) override;
 474   virtual void SetEditCommandForNextKeyEvent(const std::string& name,
 475                                              const std::string& value) override;
 476   virtual void ClearEditCommands() override;
 477   virtual SSLStatus GetSSLStatusOfFrame(blink::WebFrame* frame) const override;
 478   virtual const std::string& GetAcceptLanguages() const override;
 479 #if defined(OS_ANDROID)
 480   virtual void UpdateTopControlsState(TopControlsState constraints,
 481                                       TopControlsState current,
 482                                       bool animate) override;
 483 #endif
 484   bool uses_temporary_zoom_level() const { return uses_temporary_zoom_level_; }
 485
 486   // Please do not add your stuff randomly to the end here. If there is an
 487   // appropriate section, add it there. If not, there are some random functions
 488   // nearer to the top you can add it to.
 489
 490   // Cannot use std::set unfortunately since linked_ptr<> does not support
 491   // operator<.
 492   typedef std::vector<linked_ptr<ImageResourceFetcher> >
 493       ImageResourceFetcherList;
 494
 495  protected:
 496   // RenderWidget overrides:
 497   virtual void OnClose() override;
 498   virtual void Close() override;
 499   virtual void OnResize(const ViewMsg_Resize_Params& params) override;
 500   virtual void DidInitiatePaint() override;
 501   virtual void DidFlushPaint() override;
 502   virtual gfx::Vector2d GetScrollOffset() override;
 503   virtual void DidHandleKeyEvent() override;
 504   virtual bool WillHandleMouseEvent(
 505       const blink::WebMouseEvent& event) override;
 506   virtual bool WillHandleGestureEvent(
 507       const blink::WebGestureEvent& event) override;
 508   virtual void DidHandleMouseEvent(const blink::WebMouseEvent& event) override;
 509   virtual void DidHandleTouchEvent(const blink::WebTouchEvent& event) override;
 510   virtual bool HasTouchEventHandlersAt(const gfx::Point& point) const override;
 511   virtual void OnSetFocus(bool enable) override;
 512   virtual void OnWasHidden() override;
 513   virtual void OnWasShown(bool needs_repainting,
 514                           const ui::LatencyInfo& latency_info) override;
 515   virtual GURL GetURLForGraphicsContext3D() override;
 516   virtual void OnImeSetComposition(
 517       const base::string16& text,
 518       const std::vector<blink::WebCompositionUnderline>& underlines,
 519       int selection_start,
 520       int selection_end) override;
 521   virtual void OnImeConfirmComposition(const base::string16& text,
 522                                        const gfx::Range& replacement_range,
 523                                        bool keep_selection) override;
 524   virtual void SetDeviceScaleFactor(float device_scale_factor) override;
 525   virtual bool SetDeviceColorProfile(
 526       const std::vector<char>& color_profile) override;
 527   virtual void OnOrientationChange() override;
 528   virtual ui::TextInputType GetTextInputType() override;
 529   virtual void GetSelectionBounds(gfx::Rect* start, gfx::Rect* end) override;
 530 #if defined(OS_MACOSX) || defined(USE_AURA)
 531   virtual void GetCompositionCharacterBounds(
 532       std::vector<gfx::Rect>* character_bounds) override;
 533   virtual void GetCompositionRange(gfx::Range* range) override;
 534 #endif
 535   virtual bool CanComposeInline() override;
 536   virtual void DidCommitCompositorFrame() override;
 537   virtual void InstrumentWillBeginFrame(int frame_id) override;
 538   virtual void InstrumentDidBeginFrame() override;
 539   virtual void InstrumentDidCancelFrame() override;
 540   virtual void InstrumentWillComposite() override;
 541
 542  protected:
 543   explicit RenderViewImpl(RenderViewImplParams* params);
 544
 545   void Initialize(RenderViewImplParams* params);
 546   virtual void SetScreenMetricsEmulationParameters(
 547       float device_scale_factor,
 548       const gfx::Point& root_layer_offset,
 549       float root_layer_scale) override;
 550
 551   // Do not delete directly.  This class is reference counted.
 552   virtual ~RenderViewImpl();
 553
 554  private:
 555   // For unit tests.
 556   friend class PepperDeviceTest;
 557   friend class RenderViewImplTest;
 558   friend class RenderViewTest;
 559   friend class RendererAccessibilityTest;
 560
 561   // TODO(nasko): Temporarily friend RenderFrameImpl, so we don't duplicate
 562   // utility functions needed in both classes, while we move frame specific
 563   // code away from this class.
 564   friend class RenderFrameImpl;
 565
 566   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, DecideNavigationPolicyForWebUI);
 567   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 568                            DidFailProvisionalLoadWithErrorForError);
 569   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 570                            DidFailProvisionalLoadWithErrorForCancellation);
 571   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 572                            DontIgnoreBackAfterNavEntryLimit);
 573   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ImeComposition);
 574   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, InsertCharacters);
 575   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, JSBlockSentAfterPageLoad);
 576   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, LastCommittedUpdateState);
 577   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnHandleKeyboardEvent);
 578   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnImeTypeChanged);
 579   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavStateChanged);
 580   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnSetTextDirection);
 581   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnUpdateWebPreferences);
 582   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 583                            SetEditableSelectionAndComposition);
 584   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, StaleNavigationsIgnored);
 585   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, UpdateTargetURLWithInvalidURL);
 586   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 587                            GetCompositionCharacterBoundsTest);
 588   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavigationHttpPost);
 589   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 590                            DecideNavigationPolicyHandlesAllTopLevel);
 591 #if defined(OS_MACOSX)
 592   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, MacTestCmdUp);
 593 #endif
 594   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SetHistoryLengthAndPrune);
 595   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ZoomLimit);
 596   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, NavigateFrame);
 597   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, BasicRenderFrame);
 598   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, TextInputTypeWithPepper);
 599   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
 600                            MessageOrderInDidChangeSelection);
 601   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SendCandidateWindowEvents);
 602   FRIEND_TEST_ALL_PREFIXES(SuppressErrorPageTest, Suppresses);
 603   FRIEND_TEST_ALL_PREFIXES(SuppressErrorPageTest, DoesNotSuppress);
 604
 605   typedef std::map<GURL, double> HostZoomLevels;
 606
 607   enum ErrorPageType {
 608     DNS_ERROR,
 609     HTTP_404,
 610     CONNECTION_ERROR,
 611   };
 612
 613   // Old WebFrameClient implementations ----------------------------------------
 614
 615   // RenderViewImpl used to be a WebFrameClient, but now RenderFrameImpl is the
 616   // WebFrameClient. However, many implementations of WebFrameClient methods
 617   // still live here and are called from RenderFrameImpl. These implementations
 618   // are to be moved to RenderFrameImpl <http://crbug.com/361761>.
 619
 620   void didCreateDataSource(blink::WebLocalFrame* frame,
 621                            blink::WebDataSource* datasource);
 622   void didClearWindowObject(blink::WebLocalFrame* frame);
 623   void didChangeIcon(blink::WebLocalFrame*, blink::WebIconURL::Type);
 624   void didUpdateCurrentHistoryItem(blink::WebLocalFrame* frame);
 625   void didChangeScrollOffset(blink::WebLocalFrame* frame);
 626
 627   static bool IsReload(FrameMsg_Navigate_Type::Value navigation_type);
 628
 629   static Referrer GetReferrerFromRequest(
 630       blink::WebFrame* frame,
 631       const blink::WebURLRequest& request);
 632
 633   static WindowOpenDisposition NavigationPolicyToDisposition(
 634       blink::WebNavigationPolicy policy);
 635
 636   void UpdateSessionHistory(blink::WebFrame* frame);
 637   void SendUpdateState(HistoryEntry* entry);
 638
 639   // Sends a message and runs a nested message loop.
 640   bool SendAndRunNestedMessageLoop(IPC::SyncMessage* message);
 641
 642   // IPC message handlers ------------------------------------------------------
 643   //
 644   // The documentation for these functions should be in
 645   // content/common/*_messages.h for the message that the function is handling.
 646   void OnExecuteEditCommand(const std::string& name, const std::string& value);
 647   void OnMoveCaret(const gfx::Point& point);
 648   void OnScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect);
 649   void OnSetEditCommandsForNextKeyEvent(const EditCommands& edit_commands);
 650   void OnAllowBindings(int enabled_bindings_flags);
 651   void OnAllowScriptToClose(bool script_can_close);
 652   void OnCancelDownload(int32 download_id);
 653   void OnClearFocusedElement();
 654   void OnClosePage();
 655   void OnShowContextMenu(ui::MenuSourceType source_type,
 656                          const gfx::Point& location);
 657   void OnCopyImageAt(int x, int y);
 658   void OnSaveImageAt(int x, int y);
 659   void OnDeterminePageLanguage();
 660   void OnDisableScrollbarsForSmallWindows(
 661       const gfx::Size& disable_scrollbars_size_limit);
 662   void OnDragSourceEnded(const gfx::Point& client_point,
 663                          const gfx::Point& screen_point,
 664                          blink::WebDragOperation drag_operation);
 665   void OnDragSourceSystemDragEnded();
 666   void OnDragTargetDrop(const gfx::Point& client_pt,
 667                         const gfx::Point& screen_pt,
 668                         int key_modifiers);
 669   void OnDragTargetDragEnter(const DropData& drop_data,
 670                              const gfx::Point& client_pt,
 671                              const gfx::Point& screen_pt,
 672                              blink::WebDragOperationsMask operations_allowed,
 673                              int key_modifiers);
 674   void OnDragTargetDragLeave();
 675   void OnDragTargetDragOver(const gfx::Point& client_pt,
 676                             const gfx::Point& screen_pt,
 677                             blink::WebDragOperationsMask operations_allowed,
 678                             int key_modifiers);
 679   void OnEnablePreferredSizeChangedMode();
 680   void OnEnableAutoResize(const gfx::Size& min_size, const gfx::Size& max_size);
 681   void OnDisableAutoResize(const gfx::Size& new_size);
 682   void OnEnumerateDirectoryResponse(int id,
 683                                     const std::vector<base::FilePath>& paths);
 684   void OnFileChooserResponse(
 685       const std::vector<content::FileChooserFileInfo>& files);
 686   void OnFind(int request_id,
 687               const base::string16&,
 688               const blink::WebFindOptions&);
 689   void OnGetAllSavableResourceLinksForCurrentPage(const GURL& page_url);
 690   void OnGetSerializedHtmlDataForCurrentPageWithLocalLinks(
 691       const std::vector<GURL>& links,
 692       const std::vector<base::FilePath>& local_paths,
 693       const base::FilePath& local_directory_name);
 694   void OnMediaPlayerActionAt(const gfx::Point& location,
 695                              const blink::WebMediaPlayerAction& action);
 696   void OnPluginActionAt(const gfx::Point& location,
 697                         const blink::WebPluginAction& action);
 698   void OnMoveOrResizeStarted();
 699   void OnPostMessageEvent(const ViewMsg_PostMessage_Params& params);
 700   void OnReleaseDisambiguationPopupBitmap(const cc::SharedBitmapId& id);
 701   void OnResetPageEncodingToDefault();
 702   void OnSetActive(bool active);
 703   void OnSetBackgroundOpaque(bool opaque);
 704   void OnExitFullscreen();
 705   void OnSetHistoryLengthAndPrune(int history_length, int32 minimum_page_id);
 706   void OnSetInitialFocus(bool reverse);
 707   void OnSetPageEncoding(const std::string& encoding_name);
 708   void OnSetRendererPrefs(const RendererPreferences& renderer_prefs);
 709   void OnSetWebUIProperty(const std::string& name, const std::string& value);
 710   void OnSetZoomLevelForLoadingURL(const GURL& url, double zoom_level);
 711   void OnSetZoomLevelForView(bool uses_temporary_zoom_level, double level);
 712   void OnStopFinding(StopFindAction action);
 713   void OnSuppressDialogsUntilSwapOut();
 714   void OnThemeChanged();
 715   void OnUpdateTargetURLAck();
 716   void OnUpdateWebPreferences(const WebPreferences& prefs);
 717   void OnZoom(PageZoom zoom);
 718   void OnEnableViewSourceMode();
 719   void OnWindowSnapshotCompleted(const int snapshot_id,
 720       const gfx::Size& size, const std::vector<unsigned char>& png);
 721   void OnForceRedraw(int request_id);
 722   void OnSelectWordAroundCaret();
 723 #if defined(OS_ANDROID)
 724   void OnActivateNearestFindResult(int request_id, float x, float y);
 725   void OnFindMatchRects(int current_version);
 726   void OnUndoScrollFocusedEditableNodeIntoRect();
 727   void OnUpdateTopControlsState(bool enable_hiding,
 728                                 bool enable_showing,
 729                                 bool animate);
 730   void OnExtractSmartClipData(const gfx::Rect& rect);
 731 #elif defined(OS_MACOSX)
 732   void OnGetRenderedText();
 733   void OnPluginImeCompositionCompleted(const base::string16& text,
 734                                        int plugin_id);
 735   void OnSetInLiveResize(bool in_live_resize);
 736   void OnSetWindowVisibility(bool visible);
 737   void OnWindowFrameChanged(const gfx::Rect& window_frame,
 738                             const gfx::Rect& view_frame);
 739 #endif
 740
 741   // Adding a new message handler? Please add it in alphabetical order above
 742   // and put it in the same position in the .cc file.
 743
 744   // Misc private functions ----------------------------------------------------
 745   // Check whether the preferred size has changed.
 746   void CheckPreferredSize();
 747
 748   // Called to get the WebPlugin to handle find requests in the document.
 749   // Returns NULL if there is no such WebPlugin.
 750   blink::WebPlugin* GetWebPluginForFind();
 751
 752   // Returns true if the |params| navigation is to an entry that has been
 753   // cropped due to a recent navigation the browser did not know about.
 754   bool IsBackForwardToStaleEntry(const PageState& state,
 755                                  int pending_history_list_offset,
 756                                  int32 page_id,
 757                                  bool is_reload);
 758
 759   // Make the given |frame| show an empty, unscriptable page.
 760   // TODO(creis): Move this to RenderFrame.
 761   void NavigateToSwappedOutURL(blink::WebFrame* frame);
 762
 763   // If we initiated a navigation, this function will populate |document_state|
 764   // with the navigation information saved in OnNavigate().
 765   void PopulateDocumentStateFromPending(DocumentState* document_state);
 766
 767   // Returns a new NavigationState populated with the navigation information
 768   // saved in OnNavigate().
 769   NavigationState* CreateNavigationStateFromPending();
 770
 771   // Processes the command-line flags --enable-viewport,
 772   // --enable-fixed-layout[=w,h] and --enable-pinch.
 773   void ProcessViewLayoutFlags(const base::CommandLine& command_line);
 774
 775 #if defined(OS_ANDROID)
 776   // Launch an Android content intent with the given URL.
 777   void LaunchAndroidContentIntent(const GURL& intent_url, size_t request_id);
 778 #endif
 779
 780   // Sends a reply to the current find operation handling if it was a
 781   // synchronous find request.
 782   void SendFindReply(int request_id,
 783                      int match_count,
 784                      int ordinal,
 785                      const blink::WebRect& selection_rect,
 786                      bool final_status_update);
 787
 788   // Starts nav_state_sync_timer_ if it isn't already running.
 789   void StartNavStateSyncTimerIfNecessary();
 790
 791 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 792   void UpdateFontRenderingFromRendererPrefs();
 793 #else
 794   void UpdateFontRenderingFromRendererPrefs() {}
 795 #endif
 796
 797   // Update the target url and tell the browser that the target URL has changed.
 798   // If |url| is empty, show |fallback_url|.
 799   void UpdateTargetURL(const GURL& url, const GURL& fallback_url);
 800
 801   // Tells the browser what the new list of favicons for the webpage is.
 802   void SendUpdateFaviconURL(const std::vector<FaviconURL>& urls);
 803
 804   // Invoked from DidStopLoading(). Sends the current list of loaded favicons to
 805   // the browser.
 806   void DidStopLoadingIcons();
 807
 808   // Coordinate conversion -----------------------------------------------------
 809
 810   gfx::RectF ClientRectToPhysicalWindowRect(const gfx::RectF& rect) const;
 811
 812   // RenderFrameImpl accessible state ------------------------------------------
 813   // The following section is the set of methods that RenderFrameImpl needs
 814   // to access RenderViewImpl state. The set of state variables are page-level
 815   // specific, so they don't belong in RenderFrameImpl and should remain in
 816   // this object.
 817   ObserverList<RenderViewObserver>& observers() {
 818     return observers_;
 819   }
 820
 821   // TODO(nasko): Remove this method when we move to frame proxy objects, since
 822   // the concept of swapped out will be eliminated.
 823   void set_is_swapped_out(bool swapped_out) {
 824     is_swapped_out_ = swapped_out;
 825   }
 826
 827   NavigationGesture navigation_gesture() {
 828     return navigation_gesture_;
 829   }
 830   void set_navigation_gesture(NavigationGesture gesture) {
 831     navigation_gesture_ = gesture;
 832   }
 833
 834   // ---------------------------------------------------------------------------
 835   // ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put
 836   // it in the same order in the .cc file as it was in the header.
 837   // ---------------------------------------------------------------------------
 838
 839   // Settings ------------------------------------------------------------------
 840
 841   WebPreferences webkit_preferences_;
 842   RendererPreferences renderer_preferences_;
 843
 844   HostZoomLevels host_zoom_levels_;
 845
 846   // Whether content state (such as form state, scroll position and page
 847   // contents) should be sent to the browser immediately. This is normally
 848   // false, but set to true by some tests.
 849   bool send_content_state_immediately_;
 850
 851   // Bitwise-ORed set of extra bindings that have been enabled.  See
 852   // BindingsPolicy for details.
 853   int enabled_bindings_;
 854
 855   // If true, we send IPC messages when |preferred_size_| changes.
 856   bool send_preferred_size_changes_;
 857
 858   // If non-empty, and |send_preferred_size_changes_| is true, disable drawing
 859   // scroll bars on windows smaller than this size.  Used for windows that the
 860   // browser resizes to the size of the content, such as browser action popups.
 861   // If a render view is set to the minimum size of its content, webkit may add
 862   // scroll bars.  This makes sense for fixed sized windows, but it does not
 863   // make sense when the size of the view was chosen to fit the content.
 864   // This setting ensures that no scroll bars are drawn.  The size limit exists
 865   // because if the view grows beyond a size known to the browser, scroll bars
 866   // should be drawn.
 867   gfx::Size disable_scrollbars_size_limit_;
 868
 869   // Loading state -------------------------------------------------------------
 870
 871   // The gesture that initiated the current navigation.
 872   // TODO(nasko): Move to RenderFrame, as this is per-frame state.
 873   NavigationGesture navigation_gesture_;
 874
 875   // Used for popups.
 876   bool opened_by_user_gesture_;
 877
 878   // Whether this RenderView was created by a frame that was suppressing its
 879   // opener. If so, we may want to load pages in a separate process.  See
 880   // decidePolicyForNavigation for details.
 881   bool opener_suppressed_;
 882
 883   // Whether we must stop creating nested message loops for modal dialogs until
 884   // OnSwapOut is called.  This is necessary because modal dialogs have a
 885   // PageGroupLoadDeferrer on the stack that interferes with swapping out.
 886   bool suppress_dialogs_until_swap_out_;
 887
 888   // Holds state pertaining to a navigation that we initiated.  This is held by
 889   // the WebDataSource::ExtraData attribute.  We use pending_navigation_state_
 890   // as a temporary holder for the state until the WebDataSource corresponding
 891   // to the new navigation is created.  See DidCreateDataSource.
 892   // TODO(nasko): Move to RenderFrame, as this is per-frame state.
 893   scoped_ptr<FrameMsg_Navigate_Params> pending_navigation_params_;
 894
 895   // Timer used to delay the updating of nav state (see SyncNavigationState).
 896   base::OneShotTimer<RenderViewImpl> nav_state_sync_timer_;
 897
 898   // Page IDs ------------------------------------------------------------------
 899   // See documentation in RenderView.
 900   int32 page_id_;
 901
 902   // Indicates the ID of the last page that we sent a FrameNavigate to the
 903   // browser for. This is used to determine if the most recent transition
 904   // generated a history entry (less than page_id_), or not (equal to or
 905   // greater than). Note that this will be greater than page_id_ if the user
 906   // goes back.
 907   int32 last_page_id_sent_to_browser_;
 908
 909   // The next available page ID to use for this RenderView.  These IDs are
 910   // specific to a given RenderView and the frames within it.
 911   int32 next_page_id_;
 912
 913   // The offset of the current item in the history list.
 914   int history_list_offset_;
 915
 916   // The RenderView's current impression of the history length.  This includes
 917   // any items that have committed in this process, but because of cross-process
 918   // navigations, the history may have some entries that were committed in other
 919   // processes.  We won't know about them until the next navigation in this
 920   // process.
 921   int history_list_length_;
 922
 923   // Counter to track how many frames have sent start notifications but not stop
 924   // notifications. TODO(avi): Remove this once DidStartLoading/DidStopLoading
 925   // are gone.
 926   int frames_in_progress_;
 927
 928   // The list of page IDs for each history item this RenderView knows about.
 929   // Some entries may be -1 if they were rendered by other processes or were
 930   // restored from a previous session.  This lets us detect attempts to
 931   // navigate to stale entries that have been cropped from our history.
 932   std::vector<int32> history_page_ids_;
 933
 934   // UI state ------------------------------------------------------------------
 935
 936   // The state of our target_url transmissions. When we receive a request to
 937   // send a URL to the browser, we set this to TARGET_INFLIGHT until an ACK
 938   // comes back - if a new request comes in before the ACK, we store the new
 939   // URL in pending_target_url_ and set the status to TARGET_PENDING. If an
 940   // ACK comes back and we are in TARGET_PENDING, we send the stored URL and
 941   // revert to TARGET_INFLIGHT.
 942   //
 943   // We don't need a queue of URLs to send, as only the latest is useful.
 944   enum {
 945     TARGET_NONE,
 946     TARGET_INFLIGHT,  // We have a request in-flight, waiting for an ACK
 947     TARGET_PENDING    // INFLIGHT + we have a URL waiting to be sent
 948   } target_url_status_;
 949
 950   // The URL we show the user in the status bar. We use this to determine if we
 951   // want to send a new one (we do not need to send duplicates). It will be
 952   // equal to either |mouse_over_url_| or |focus_url_|, depending on which was
 953   // updated last.
 954   GURL target_url_;
 955
 956   // The URL the user's mouse is hovering over.
 957   GURL mouse_over_url_;
 958
 959   // The URL that has keyboard focus.
 960   GURL focus_url_;
 961
 962   // The next target URL we want to send to the browser.
 963   GURL pending_target_url_;
 964
 965   // Indicates whether this view overrides url-based zoom settings.
 966   bool uses_temporary_zoom_level_;
 967
 968 #if defined(OS_ANDROID)
 969   // Cache the old top controls state constraints. Used when updating
 970   // current value only without altering the constraints.
 971   cc::TopControlsState top_controls_constraints_;
 972 #endif
 973
 974   // View ----------------------------------------------------------------------
 975
 976   // Cache the preferred size of the page in order to prevent sending the IPC
 977   // when layout() recomputes but doesn't actually change sizes.
 978   gfx::Size preferred_size_;
 979
 980   // Used to delay determining the preferred size (to avoid intermediate
 981   // states for the sizes).
 982   base::OneShotTimer<RenderViewImpl> check_preferred_size_timer_;
 983
 984   // Bookkeeping to suppress redundant scroll and focus requests for an already
 985   // scrolled and focused editable node.
 986   bool has_scrolled_focused_editable_node_into_rect_;
 987   gfx::Rect rect_for_scrolled_focused_editable_node_;
 988
 989   // Helper objects ------------------------------------------------------------
 990
 991   scoped_ptr<RenderFrameImpl> main_render_frame_;
 992
 993   // The next group of objects all implement RenderViewObserver, so are deleted
 994   // along with the RenderView automatically.  This is why we just store
 995   // weak references.
 996
 997   // The speech recognition dispatcher attached to this view, lazily
 998   // initialized.
 999   SpeechRecognitionDispatcher* speech_recognition_dispatcher_;
1000
1001   // BrowserPluginManager attached to this view; lazily initialized.
1002   scoped_refptr<BrowserPluginManager> browser_plugin_manager_;
1003
1004   DevToolsAgent* devtools_agent_;
1005
1006   // Mouse Lock dispatcher attached to this view.
1007   MouseLockDispatcher* mouse_lock_dispatcher_;
1008
1009   scoped_ptr<HistoryController> history_controller_;
1010
1011 #if defined(OS_ANDROID)
1012   // Android Specific ---------------------------------------------------------
1013
1014   // Expected id of the next content intent launched. Used to prevent scheduled
1015   // intents to be launched if aborted.
1016   size_t expected_content_intent_id_;
1017
1018   // List of click-based content detectors.
1019   typedef std::vector< linked_ptr<ContentDetector> > ContentDetectorList;
1020   ContentDetectorList content_detectors_;
1021
1022   // A date/time picker object for date and time related input elements.
1023   scoped_ptr<RendererDateTimePicker> date_time_picker_client_;
1024 #endif
1025
1026   // Plugins -------------------------------------------------------------------
1027
1028   // All the currently active plugin delegates for this RenderView; kept so
1029   // that we can enumerate them to send updates about things like window
1030   // location or tab focus and visibily. These are non-owning references.
1031   std::set<WebPluginDelegateProxy*> plugin_delegates_;
1032
1033 #if defined(OS_WIN)
1034   // The ID of the focused NPAPI plug-in.
1035   int focused_plugin_id_;
1036 #endif
1037
1038 #if defined(ENABLE_PLUGINS)
1039   PepperPluginInstanceImpl* plugin_find_handler_;
1040
1041   typedef std::set<PepperPluginInstanceImpl*> PepperPluginSet;
1042   PepperPluginSet active_pepper_instances_;
1043
1044   // TODO(jam): these belong on RenderFrame, once the browser knows which frame
1045   // is focused and sends the IPCs which use these to the correct frame. Until
1046   // then, we must store these on RenderView as that's the one place that knows
1047   // about all the RenderFrames for a page.
1048
1049   // Whether or not the focus is on a PPAPI plugin
1050   PepperPluginInstanceImpl* focused_pepper_plugin_;
1051
1052   // The plugin instance that received the last mouse event. It is set to NULL
1053   // if the last mouse event went to elements other than Pepper plugins.
1054   // |pepper_last_mouse_event_target_| is not owned by this class. We depend on
1055   // the RenderFrameImpl to NULL it out when it destructs.
1056   PepperPluginInstanceImpl* pepper_last_mouse_event_target_;
1057 #endif
1058
1059   // Misc ----------------------------------------------------------------------
1060
1061   // The current and pending file chooser completion objects. If the queue is
1062   // nonempty, the first item represents the currently running file chooser
1063   // callback, and the remaining elements are the other file chooser completion
1064   // still waiting to be run (in order).
1065   struct PendingFileChooser;
1066   std::deque< linked_ptr<PendingFileChooser> > file_chooser_completions_;
1067
1068   // The current directory enumeration callback
1069   std::map<int, blink::WebFileChooserCompletion*> enumeration_completions_;
1070   int enumeration_completion_id_;
1071
1072   // The SessionStorage namespace that we're assigned to has an ID, and that ID
1073   // is passed to us upon creation.  WebKit asks for this ID upon first use and
1074   // uses it whenever asking the browser process to allocate new storage areas.
1075   int64 session_storage_namespace_id_;
1076
1077   // Stores edit commands associated to the next key event.
1078   // Shall be cleared as soon as the next key event is processed.
1079   EditCommands edit_commands_;
1080
1081   // All the registered observers.  We expect this list to be small, so vector
1082   // is fine.
1083   ObserverList<RenderViewObserver> observers_;
1084
1085   // Wraps the |webwidget_| as a MouseLockDispatcher::LockTarget interface.
1086   scoped_ptr<MouseLockDispatcher::LockTarget> webwidget_mouse_lock_target_;
1087
1088   // State associated with the GetWindowSnapshot function.
1089   int next_snapshot_id_;
1090   typedef std::map<int, WindowSnapshotCallback> PendingSnapshotMap;
1091   PendingSnapshotMap pending_snapshots_;
1092
1093   // This field stores drag/drop related info for the event that is currently
1094   // being handled. If the current event results in starting a drag/drop
1095   // session, this info is sent to the browser along with other drag/drop info.
1096   DragEventSourceInfo possible_drag_event_info_;
1097
1098   // NOTE: stats_collection_observer_ should be the last members because their
1099   // constructors call the AddObservers method of RenderViewImpl.
1100   scoped_ptr<StatsCollectionObserver> stats_collection_observer_;
1101
1102   typedef std::map<cc::SharedBitmapId, cc::SharedBitmap*> BitmapMap;
1103   BitmapMap disambiguation_bitmaps_;
1104
1105   // ---------------------------------------------------------------------------
1106   // ADDING NEW DATA? Please see if it fits appropriately in one of the above
1107   // sections rather than throwing it randomly at the end. If you're adding a
1108   // bunch of stuff, you should probably create a helper class and put your
1109   // data and methods on that to avoid bloating RenderView more.  You can
1110   // use the Observer interface to filter IPC messages and receive frame change
1111   // notifications.
1112   // ---------------------------------------------------------------------------
1113
1114   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
1115 };
1116
1117 }  // namespace content
1118
1119 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_