content/browser/web_contents/web_contents_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_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "base/compiler_specific.h"
  13 #include "base/containers/scoped_ptr_hash_map.h"
  14 #include "base/gtest_prod_util.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/observer_list.h"
  17 #include "base/process/process.h"
  18 #include "base/values.h"
  19 #include "content/browser/frame_host/frame_tree.h"
  20 #include "content/browser/frame_host/navigation_controller_delegate.h"
  21 #include "content/browser/frame_host/navigation_controller_impl.h"
  22 #include "content/browser/frame_host/navigator_delegate.h"
  23 #include "content/browser/frame_host/render_frame_host_delegate.h"
  24 #include "content/browser/frame_host/render_frame_host_manager.h"
  25 #include "content/browser/renderer_host/render_view_host_delegate.h"
  26 #include "content/browser/renderer_host/render_widget_host_delegate.h"
  27 #include "content/common/accessibility_mode_enums.h"
  28 #include "content/common/content_export.h"
  29 #include "content/public/browser/color_chooser.h"
  30 #include "content/public/browser/notification_observer.h"
  31 #include "content/public/browser/notification_registrar.h"
  32 #include "content/public/browser/web_contents.h"
  33 #include "content/public/common/page_transition_types.h"
  34 #include "content/public/common/renderer_preferences.h"
  35 #include "content/public/common/resource_type.h"
  36 #include "content/public/common/three_d_api_types.h"
  37 #include "net/base/load_states.h"
  38 #include "net/http/http_response_headers.h"
  39 #include "third_party/WebKit/public/web/WebDragOperation.h"
  40 #include "ui/gfx/rect_f.h"
  41 #include "ui/gfx/size.h"
  42
  43 struct BrowserPluginHostMsg_ResizeGuest_Params;
  44 struct ViewHostMsg_DateTimeDialogValue_Params;
  45 struct ViewMsg_PostMessage_Params;
  46
  47 namespace content {
  48 class BrowserPluginEmbedder;
  49 class BrowserPluginGuest;
  50 class BrowserPluginGuestManager;
  51 class DateTimeChooserAndroid;
  52 class DownloadItem;
  53 class GeolocationDispatcherHost;
  54 class InterstitialPageImpl;
  55 class JavaScriptDialogManager;
  56 class MidiDispatcherHost;
  57 class PowerSaveBlocker;
  58 class RenderViewHost;
  59 class RenderViewHostDelegateView;
  60 class RenderViewHostImpl;
  61 class RenderWidgetHostImpl;
  62 class SavePackage;
  63 class ScreenOrientationDispatcherHost;
  64 class SiteInstance;
  65 class TestWebContents;
  66 class WebContentsDelegate;
  67 class WebContentsImpl;
  68 class WebContentsObserver;
  69 class WebContentsView;
  70 class WebContentsViewDelegate;
  71 struct AXEventNotificationDetails;
  72 struct ColorSuggestion;
  73 struct FaviconURL;
  74 struct LoadNotificationDetails;
  75 struct ResourceRedirectDetails;
  76 struct ResourceRequestDetails;
  77
  78 #if defined(OS_ANDROID)
  79 class WebContentsAndroid;
  80 #endif
  81
  82 // Factory function for the implementations that content knows about. Takes
  83 // ownership of |delegate|.
  84 WebContentsView* CreateWebContentsView(
  85     WebContentsImpl* web_contents,
  86     WebContentsViewDelegate* delegate,
  87     RenderViewHostDelegateView** render_view_host_delegate_view);
  88
  89 class CONTENT_EXPORT WebContentsImpl
  90     : public NON_EXPORTED_BASE(WebContents),
  91       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  92       public RenderViewHostDelegate,
  93       public RenderWidgetHostDelegate,
  94       public RenderFrameHostManager::Delegate,
  95       public NotificationObserver,
  96       public NON_EXPORTED_BASE(NavigationControllerDelegate),
  97       public NON_EXPORTED_BASE(NavigatorDelegate) {
  98  public:
  99   virtual ~WebContentsImpl();
 100
 101   static WebContentsImpl* CreateWithOpener(
 102       const WebContents::CreateParams& params,
 103       WebContentsImpl* opener);
 104
 105   static std::vector<WebContentsImpl*> GetAllWebContents();
 106
 107   // Returns the opener WebContentsImpl, if any. This can be set to null if the
 108   // opener is closed or the page clears its window.opener.
 109   WebContentsImpl* opener() const { return opener_; }
 110
 111   // Creates a swapped out RenderView. This is used by the browser plugin to
 112   // create a swapped out RenderView in the embedder render process for the
 113   // guest, to expose the guest's window object to the embedder.
 114   // This returns the routing ID of the newly created swapped out RenderView.
 115   int CreateSwappedOutRenderView(SiteInstance* instance);
 116
 117   // Complex initialization here. Specifically needed to avoid having
 118   // members call back into our virtual functions in the constructor.
 119   virtual void Init(const WebContents::CreateParams& params);
 120
 121   // Returns the SavePackage which manages the page saving job. May be NULL.
 122   SavePackage* save_package() const { return save_package_.get(); }
 123
 124 #if defined(OS_ANDROID)
 125   // In Android WebView, the RenderView needs created even there is no
 126   // navigation entry, this allows Android WebViews to use
 127   // javascript: URLs that load into the DOMWindow before the first page
 128   // load. This is not safe to do in any context that a web page could get a
 129   // reference to the DOMWindow before the first page load.
 130   bool CreateRenderViewForInitialEmptyDocument();
 131 #endif
 132
 133   // Expose the render manager for testing.
 134   // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
 135   RenderFrameHostManager* GetRenderManagerForTesting();
 136
 137   // Returns guest browser plugin object, or NULL if this WebContents is not a
 138   // guest.
 139   BrowserPluginGuest* GetBrowserPluginGuest() const;
 140
 141   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 142   // has a BrowserPluginGuest then that implies that it is being hosted by
 143   // a BrowserPlugin object in an embedder renderer process.
 144   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 145
 146   // Returns embedder browser plugin object, or NULL if this WebContents is not
 147   // an embedder.
 148   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 149
 150   // Gets the current fullscreen render widget's routing ID. Returns
 151   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 152   int GetFullscreenWidgetRoutingID() const;
 153
 154   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 155   void DidChangeVisibleSSLState();
 156
 157   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 158   // a Drag Source End.
 159   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 160       int screen_y, blink::WebDragOperation operation);
 161
 162   // A response has been received for a resource request.
 163   void DidGetResourceResponseStart(
 164       const ResourceRequestDetails& details);
 165
 166   // A redirect was received while requesting a resource.
 167   void DidGetRedirectForResourceRequest(
 168       RenderViewHost* render_view_host,
 169       const ResourceRedirectDetails& details);
 170
 171   WebContentsView* GetView() const;
 172
 173   GeolocationDispatcherHost* geolocation_dispatcher_host() {
 174     return geolocation_dispatcher_host_.get();
 175   }
 176
 177   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
 178     return screen_orientation_dispatcher_host_.get();
 179   }
 180
 181   bool should_normally_be_visible() { return should_normally_be_visible_; }
 182
 183   // Broadcasts the mode change to all frames.
 184   void SetAccessibilityMode(AccessibilityMode mode);
 185
 186   // Adds the given accessibility mode to the current accessibility mode
 187   // bitmap.
 188   void AddAccessibilityMode(AccessibilityMode mode);
 189
 190   // Removes the given accessibility mode from the current accessibility
 191   // mode bitmap, managing the bits that are shared with other modes such
 192   // that a bit will only be turned off when all modes that depend on it
 193   // have been removed.
 194   void RemoveAccessibilityMode(AccessibilityMode mode);
 195
 196   // WebContents ------------------------------------------------------
 197   virtual WebContentsDelegate* GetDelegate() OVERRIDE;
 198   virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
 199   virtual NavigationControllerImpl& GetController() OVERRIDE;
 200   virtual const NavigationControllerImpl& GetController() const OVERRIDE;
 201   virtual BrowserContext* GetBrowserContext() const OVERRIDE;
 202   virtual const GURL& GetURL() const OVERRIDE;
 203   virtual const GURL& GetVisibleURL() const OVERRIDE;
 204   virtual const GURL& GetLastCommittedURL() const OVERRIDE;
 205   virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
 206   virtual RenderFrameHost* GetMainFrame() OVERRIDE;
 207   virtual RenderFrameHost* GetFocusedFrame() OVERRIDE;
 208   virtual void ForEachFrame(
 209       const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
 210   virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
 211   virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
 212   virtual int GetRoutingID() const OVERRIDE;
 213   virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE;
 214   virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const
 215       OVERRIDE;
 216   virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE;
 217   virtual WebUI* GetWebUI() const OVERRIDE;
 218   virtual WebUI* GetCommittedWebUI() const OVERRIDE;
 219   virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;
 220   virtual const std::string& GetUserAgentOverride() const OVERRIDE;
 221   virtual void EnableTreeOnlyAccessibilityMode() OVERRIDE;
 222   virtual bool IsTreeOnlyAccessibilityModeForTesting() const OVERRIDE;
 223   virtual bool IsFullAccessibilityModeForTesting() const OVERRIDE;
 224 #if defined(OS_WIN)
 225   virtual void SetParentNativeViewAccessible(
 226       gfx::NativeViewAccessible accessible_parent) OVERRIDE;
 227 #endif
 228   virtual const base::string16& GetTitle() const OVERRIDE;
 229   virtual int32 GetMaxPageID() OVERRIDE;
 230   virtual int32 GetMaxPageIDForSiteInstance(
 231       SiteInstance* site_instance) OVERRIDE;
 232   virtual SiteInstance* GetSiteInstance() const OVERRIDE;
 233   virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE;
 234   virtual bool IsLoading() const OVERRIDE;
 235   virtual bool IsLoadingToDifferentDocument() const OVERRIDE;
 236   virtual bool IsWaitingForResponse() const OVERRIDE;
 237   virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
 238   virtual const base::string16& GetLoadStateHost() const OVERRIDE;
 239   virtual uint64 GetUploadSize() const OVERRIDE;
 240   virtual uint64 GetUploadPosition() const OVERRIDE;
 241   virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
 242   virtual const std::string& GetEncoding() const OVERRIDE;
 243   virtual bool DisplayedInsecureContent() const OVERRIDE;
 244   virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
 245   virtual void DecrementCapturerCount() OVERRIDE;
 246   virtual int GetCapturerCount() const OVERRIDE;
 247   virtual bool IsCrashed() const OVERRIDE;
 248   virtual void SetIsCrashed(base::TerminationStatus status,
 249                             int error_code) OVERRIDE;
 250   virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
 251   virtual bool IsBeingDestroyed() const OVERRIDE;
 252   virtual void NotifyNavigationStateChanged(
 253       InvalidateTypes changed_flags) OVERRIDE;
 254   virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
 255   virtual void WasShown() OVERRIDE;
 256   virtual void WasHidden() OVERRIDE;
 257   virtual bool NeedToFireBeforeUnload() OVERRIDE;
 258   virtual void DispatchBeforeUnload(bool for_cross_site_transition) OVERRIDE;
 259   virtual void Stop() OVERRIDE;
 260   virtual WebContents* Clone() OVERRIDE;
 261   virtual void ReloadFocusedFrame(bool ignore_cache) OVERRIDE;
 262   virtual void Undo() OVERRIDE;
 263   virtual void Redo() OVERRIDE;
 264   virtual void Cut() OVERRIDE;
 265   virtual void Copy() OVERRIDE;
 266   virtual void CopyToFindPboard() OVERRIDE;
 267   virtual void Paste() OVERRIDE;
 268   virtual void PasteAndMatchStyle() OVERRIDE;
 269   virtual void Delete() OVERRIDE;
 270   virtual void SelectAll() OVERRIDE;
 271   virtual void Unselect() OVERRIDE;
 272   virtual void Replace(const base::string16& word) OVERRIDE;
 273   virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE;
 274   virtual void NotifyContextMenuClosed(
 275       const CustomContextMenuContext& context) OVERRIDE;
 276   virtual void ExecuteCustomContextMenuCommand(
 277       int action, const CustomContextMenuContext& context) OVERRIDE;
 278   virtual gfx::NativeView GetNativeView() OVERRIDE;
 279   virtual gfx::NativeView GetContentNativeView() OVERRIDE;
 280   virtual gfx::NativeWindow GetTopLevelNativeWindow() OVERRIDE;
 281   virtual gfx::Rect GetContainerBounds() OVERRIDE;
 282   virtual gfx::Rect GetViewBounds() OVERRIDE;
 283   virtual DropData* GetDropData() OVERRIDE;
 284   virtual void Focus() OVERRIDE;
 285   virtual void SetInitialFocus() OVERRIDE;
 286   virtual void StoreFocus() OVERRIDE;
 287   virtual void RestoreFocus() OVERRIDE;
 288   virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
 289   virtual bool ShowingInterstitialPage() const OVERRIDE;
 290   virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
 291   virtual bool IsSavable() OVERRIDE;
 292   virtual void OnSavePage() OVERRIDE;
 293   virtual bool SavePage(const base::FilePath& main_file,
 294                         const base::FilePath& dir_path,
 295                         SavePageType save_type) OVERRIDE;
 296   virtual void SaveFrame(const GURL& url,
 297                          const Referrer& referrer) OVERRIDE;
 298   virtual void GenerateMHTML(
 299       const base::FilePath& file,
 300       const base::Callback<void(int64)>& callback)
 301           OVERRIDE;
 302   virtual const std::string& GetContentsMimeType() const OVERRIDE;
 303   virtual bool WillNotifyDisconnection() const OVERRIDE;
 304   virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
 305   virtual void ResetOverrideEncoding() OVERRIDE;
 306   virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
 307   virtual void Close() OVERRIDE;
 308   virtual void SystemDragEnded() OVERRIDE;
 309   virtual void UserGestureDone() OVERRIDE;
 310   virtual void SetClosedByUserGesture(bool value) OVERRIDE;
 311   virtual bool GetClosedByUserGesture() const OVERRIDE;
 312   virtual void ViewSource() OVERRIDE;
 313   virtual void ViewFrameSource(const GURL& url,
 314                                const PageState& page_state) OVERRIDE;
 315   virtual int GetMinimumZoomPercent() const OVERRIDE;
 316   virtual int GetMaximumZoomPercent() const OVERRIDE;
 317   virtual gfx::Size GetPreferredSize() const OVERRIDE;
 318   virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
 319   virtual bool HasOpener() const OVERRIDE;
 320   virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
 321   virtual void DidEndColorChooser() OVERRIDE;
 322   virtual int DownloadImage(const GURL& url,
 323                             bool is_favicon,
 324                             uint32_t max_bitmap_size,
 325                             const ImageDownloadCallback& callback) OVERRIDE;
 326   virtual bool IsSubframe() const OVERRIDE;
 327   virtual void Find(int request_id,
 328                     const base::string16& search_text,
 329                     const blink::WebFindOptions& options) OVERRIDE;
 330   virtual void StopFinding(StopFindAction action) OVERRIDE;
 331   virtual void InsertCSS(const std::string& css) OVERRIDE;
 332 #if defined(OS_ANDROID)
 333   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
 334       OVERRIDE;
 335   virtual WebContentsAndroid* GetWebContentsAndroid();
 336 #elif defined(OS_MACOSX)
 337   virtual void SetAllowOtherViews(bool allow) OVERRIDE;
 338   virtual bool GetAllowOtherViews() OVERRIDE;
 339 #endif
 340
 341   // Implementation of PageNavigator.
 342   virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
 343
 344   // Implementation of IPC::Sender.
 345   virtual bool Send(IPC::Message* message) OVERRIDE;
 346
 347   // RenderFrameHostDelegate ---------------------------------------------------
 348   virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
 349                                  const IPC::Message& message) OVERRIDE;
 350   virtual const GURL& GetMainFrameLastCommittedURL() const OVERRIDE;
 351   virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
 352   virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
 353   virtual void DidStartLoading(RenderFrameHost* render_frame_host,
 354                                bool to_different_document) OVERRIDE;
 355   virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE;
 356   virtual void DidDeferAfterResponseStarted(
 357       const TransitionLayerData& transition_data) OVERRIDE;
 358   virtual bool WillHandleDeferAfterResponseStarted() OVERRIDE;
 359   virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE;
 360   virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
 361                                const ContextMenuParams& params) OVERRIDE;
 362   virtual void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
 363                                     const base::string16& message,
 364                                     const base::string16& default_prompt,
 365                                     const GURL& frame_url,
 366                                     JavaScriptMessageType type,
 367                                     IPC::Message* reply_msg) OVERRIDE;
 368   virtual void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
 369                                       const base::string16& message,
 370                                       bool is_reload,
 371                                       IPC::Message* reply_msg) OVERRIDE;
 372   virtual void DidAccessInitialDocument() OVERRIDE;
 373   virtual void DidDisownOpener(RenderFrameHost* render_frame_host) OVERRIDE;
 374   virtual void DocumentOnLoadCompleted(
 375       RenderFrameHost* render_frame_host) OVERRIDE;
 376   virtual void UpdateTitle(RenderFrameHost* render_frame_host,
 377                            int32 page_id,
 378                            const base::string16& title,
 379                            base::i18n::TextDirection title_direction) OVERRIDE;
 380   virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
 381                               const std::string& encoding) OVERRIDE;
 382   virtual WebContents* GetAsWebContents() OVERRIDE;
 383   virtual bool IsNeverVisible() OVERRIDE;
 384   virtual AccessibilityMode GetAccessibilityMode() const OVERRIDE;
 385   virtual void AccessibilityEventReceived(
 386       const std::vector<AXEventNotificationDetails>& details) OVERRIDE;
 387 #if defined(OS_WIN)
 388   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
 389 #endif
 390
 391   // RenderViewHostDelegate ----------------------------------------------------
 392   virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
 393   virtual bool OnMessageReceived(RenderViewHost* render_view_host,
 394                                  const IPC::Message& message) OVERRIDE;
 395   // RenderFrameHostDelegate has the same method, so list it there because this
 396   // interface is going away.
 397   // virtual WebContents* GetAsWebContents() OVERRIDE;
 398   virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
 399   virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
 400   virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
 401   virtual void RenderViewTerminated(RenderViewHost* render_view_host,
 402                                     base::TerminationStatus status,
 403                                     int error_code) OVERRIDE;
 404   virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
 405   virtual void UpdateState(RenderViewHost* render_view_host,
 406                            int32 page_id,
 407                            const PageState& page_state) OVERRIDE;
 408   virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
 409   virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
 410   virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
 411   virtual void DidCancelLoading() OVERRIDE;
 412   virtual void DocumentAvailableInMainFrame(
 413       RenderViewHost* render_view_host) OVERRIDE;
 414   virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
 415   virtual void RouteMessageEvent(
 416       RenderViewHost* rvh,
 417       const ViewMsg_PostMessage_Params& params) OVERRIDE;
 418   virtual bool AddMessageToConsole(int32 level,
 419                                    const base::string16& message,
 420                                    int32 line_no,
 421                                    const base::string16& source_id) OVERRIDE;
 422   virtual RendererPreferences GetRendererPrefs(
 423       BrowserContext* browser_context) const OVERRIDE;
 424   virtual WebPreferences ComputeWebkitPrefs() OVERRIDE;
 425   virtual void OnUserGesture() OVERRIDE;
 426   virtual void OnIgnoredUIEvent() OVERRIDE;
 427   virtual void RendererUnresponsive(RenderViewHost* render_view_host,
 428                                     bool is_during_beforeunload,
 429                                     bool is_during_unload) OVERRIDE;
 430   virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
 431   virtual void LoadStateChanged(const GURL& url,
 432                                 const net::LoadStateWithParam& load_state,
 433                                 uint64 upload_position,
 434                                 uint64 upload_size) OVERRIDE;
 435   virtual void Activate() OVERRIDE;
 436   virtual void Deactivate() OVERRIDE;
 437   virtual void LostCapture() OVERRIDE;
 438   virtual void HandleMouseDown() OVERRIDE;
 439   virtual void HandleMouseUp() OVERRIDE;
 440   virtual void HandlePointerActivate() OVERRIDE;
 441   virtual void HandleGestureBegin() OVERRIDE;
 442   virtual void HandleGestureEnd() OVERRIDE;
 443   virtual void RunFileChooser(
 444       RenderViewHost* render_view_host,
 445       const FileChooserParams& params) OVERRIDE;
 446   virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
 447   virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
 448   virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
 449   virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
 450   virtual void RequestToLockMouse(bool user_gesture,
 451                                   bool last_unlocked_by_target) OVERRIDE;
 452   virtual void LostMouseLock() OVERRIDE;
 453   virtual void CreateNewWindow(
 454       int render_process_id,
 455       int route_id,
 456       int main_frame_route_id,
 457       const ViewHostMsg_CreateWindow_Params& params,
 458       SessionStorageNamespace* session_storage_namespace) OVERRIDE;
 459   virtual void CreateNewWidget(int render_process_id,
 460                                int route_id,
 461                                blink::WebPopupType popup_type) OVERRIDE;
 462   virtual void CreateNewFullscreenWidget(int render_process_id,
 463                                          int route_id) OVERRIDE;
 464   virtual void ShowCreatedWindow(int route_id,
 465                                  WindowOpenDisposition disposition,
 466                                  const gfx::Rect& initial_pos,
 467                                  bool user_gesture) OVERRIDE;
 468   virtual void ShowCreatedWidget(int route_id,
 469                                  const gfx::Rect& initial_pos) OVERRIDE;
 470   virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
 471   virtual void RequestMediaAccessPermission(
 472       const MediaStreamRequest& request,
 473       const MediaResponseCallback& callback) OVERRIDE;
 474   virtual SessionStorageNamespace* GetSessionStorageNamespace(
 475       SiteInstance* instance) OVERRIDE;
 476   virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap() OVERRIDE;
 477   virtual FrameTree* GetFrameTree() OVERRIDE;
 478
 479   // NavigatorDelegate ---------------------------------------------------------
 480
 481   virtual void DidStartProvisionalLoad(
 482       RenderFrameHostImpl* render_frame_host,
 483       const GURL& validated_url,
 484       bool is_error_page,
 485       bool is_iframe_srcdoc) OVERRIDE;
 486   virtual void DidStartNavigationTransition(
 487       RenderFrameHostImpl* render_frame_host) OVERRIDE;
 488   virtual void DidFailProvisionalLoadWithError(
 489       RenderFrameHostImpl* render_frame_host,
 490       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 491       OVERRIDE;
 492   virtual void DidFailLoadWithError(
 493       RenderFrameHostImpl* render_frame_host,
 494       const GURL& url,
 495       int error_code,
 496       const base::string16& error_description) OVERRIDE;
 497   virtual void DidRedirectProvisionalLoad(
 498       RenderFrameHostImpl* render_frame_host,
 499       const GURL& validated_target_url) OVERRIDE;
 500   virtual void DidCommitProvisionalLoad(
 501       RenderFrameHostImpl* render_frame_host,
 502       const GURL& url,
 503       PageTransition transition_type) OVERRIDE;
 504   virtual void DidNavigateMainFramePreCommit(
 505       bool navigation_is_within_page) OVERRIDE;
 506   virtual void DidNavigateMainFramePostCommit(
 507       const LoadCommittedDetails& details,
 508       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
 509   virtual void DidNavigateAnyFramePostCommit(
 510       RenderFrameHostImpl* render_frame_host,
 511       const LoadCommittedDetails& details,
 512       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
 513   virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
 514   virtual bool CanOverscrollContent() const OVERRIDE;
 515   virtual void NotifyChangedNavigationState(
 516       InvalidateTypes changed_flags) OVERRIDE;
 517   virtual void AboutToNavigateRenderFrame(
 518       RenderFrameHostImpl* render_frame_host) OVERRIDE;
 519   virtual void DidStartNavigationToPendingEntry(
 520       RenderFrameHostImpl* render_frame_host,
 521       const GURL& url,
 522       NavigationController::ReloadType reload_type) OVERRIDE;
 523   virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 524                               const OpenURLParams& params) OVERRIDE;
 525   virtual bool ShouldPreserveAbortedURLs() OVERRIDE;
 526
 527   // RenderWidgetHostDelegate --------------------------------------------------
 528
 529   virtual void RenderWidgetDeleted(
 530       RenderWidgetHostImpl* render_widget_host) OVERRIDE;
 531   virtual bool PreHandleKeyboardEvent(
 532       const NativeWebKeyboardEvent& event,
 533       bool* is_keyboard_shortcut) OVERRIDE;
 534   virtual void HandleKeyboardEvent(
 535       const NativeWebKeyboardEvent& event) OVERRIDE;
 536   virtual bool HandleWheelEvent(
 537       const blink::WebMouseWheelEvent& event) OVERRIDE;
 538   virtual bool PreHandleGestureEvent(
 539       const blink::WebGestureEvent& event) OVERRIDE;
 540   virtual bool HandleGestureEvent(
 541       const blink::WebGestureEvent& event) OVERRIDE;
 542   virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
 543   virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager()
 544       OVERRIDE;
 545   virtual BrowserAccessibilityManager*
 546       GetOrCreateRootBrowserAccessibilityManager() OVERRIDE;
 547
 548   // RenderFrameHostManager::Delegate ------------------------------------------
 549
 550   virtual bool CreateRenderViewForRenderManager(
 551       RenderViewHost* render_view_host,
 552       int opener_route_id,
 553       int proxy_routing_id,
 554       bool for_main_frame_navigation) OVERRIDE;
 555   virtual bool CreateRenderFrameForRenderManager(
 556       RenderFrameHost* render_frame_host,
 557       int parent_routing_id) OVERRIDE;
 558   virtual void BeforeUnloadFiredFromRenderManager(
 559       bool proceed, const base::TimeTicks& proceed_time,
 560       bool* proceed_to_fire_unload) OVERRIDE;
 561   virtual void RenderProcessGoneFromRenderManager(
 562       RenderViewHost* render_view_host) OVERRIDE;
 563   virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
 564   virtual void CancelModalDialogsForRenderManager() OVERRIDE;
 565   virtual void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
 566                                               RenderFrameHost* new_host,
 567                                               bool is_main_frame) OVERRIDE;
 568   virtual int CreateOpenerRenderViewsForRenderManager(
 569       SiteInstance* instance) OVERRIDE;
 570   virtual NavigationControllerImpl&
 571       GetControllerForRenderManager() OVERRIDE;
 572   virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
 573   virtual NavigationEntry*
 574       GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
 575   virtual bool FocusLocationBarByDefault() OVERRIDE;
 576   virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
 577   virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
 578   virtual bool IsHidden() OVERRIDE;
 579
 580   // NotificationObserver ------------------------------------------------------
 581
 582   virtual void Observe(int type,
 583                        const NotificationSource& source,
 584                        const NotificationDetails& details) OVERRIDE;
 585
 586   // NavigationControllerDelegate ----------------------------------------------
 587
 588   virtual WebContents* GetWebContents() OVERRIDE;
 589   virtual void NotifyNavigationEntryCommitted(
 590       const LoadCommittedDetails& load_details) OVERRIDE;
 591
 592   // Invoked before a form repost warning is shown.
 593   virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
 594
 595   // Activate this WebContents and show a form repost warning.
 596   virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
 597
 598   // Whether the initial empty page of this view has been accessed by another
 599   // page, making it unsafe to show the pending URL. Always false after the
 600   // first commit.
 601   virtual bool HasAccessedInitialDocument() OVERRIDE;
 602
 603   // Updates the max page ID for the current SiteInstance in this
 604   // WebContentsImpl to be at least |page_id|.
 605   virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
 606
 607   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 608   // to be at least |page_id|.
 609   virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 610                                               int32 page_id) OVERRIDE;
 611
 612   // Copy the current map of SiteInstance ID to max page ID from another tab.
 613   // This is necessary when this tab adopts the NavigationEntries from
 614   // |web_contents|.
 615   virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
 616
 617   // Called by the NavigationController to cause the WebContentsImpl to navigate
 618   // to the current pending entry. The NavigationController should be called
 619   // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
 620   // The callbacks can be inside of this function, or at some future time.
 621   //
 622   // The entry has a PageID of -1 if newly created (corresponding to navigation
 623   // to a new URL).
 624   //
 625   // If this method returns false, then the navigation is discarded (equivalent
 626   // to calling DiscardPendingEntry on the NavigationController).
 627   virtual bool NavigateToPendingEntry(
 628       NavigationController::ReloadType reload_type) OVERRIDE;
 629
 630   // Sets the history for this WebContentsImpl to |history_length| entries, and
 631   // moves the current page_id to the last entry in the list if it's valid.
 632   // This is mainly used when a prerendered page is swapped into the current
 633   // tab. The method is virtual for testing.
 634   virtual void SetHistoryLengthAndPrune(
 635       const SiteInstance* site_instance,
 636       int merge_history_length,
 637       int32 minimum_page_id) OVERRIDE;
 638
 639   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 640   virtual void RenderFrameForInterstitialPageCreated(
 641       RenderFrameHost* render_frame_host) OVERRIDE;
 642
 643   // Sets the passed interstitial as the currently showing interstitial.
 644   // No interstitial page should already be attached.
 645   virtual void AttachInterstitialPage(
 646       InterstitialPageImpl* interstitial_page) OVERRIDE;
 647
 648   // Unsets the currently showing interstitial.
 649   virtual void DetachInterstitialPage() OVERRIDE;
 650
 651   // Changes the IsLoading state and notifies the delegate as needed.
 652   // |details| is used to provide details on the load that just finished
 653   // (but can be null if not applicable).
 654   virtual void SetIsLoading(RenderViewHost* render_view_host,
 655                             bool is_loading,
 656                             bool to_different_document,
 657                             LoadNotificationDetails* details) OVERRIDE;
 658
 659   typedef base::Callback<void(WebContents*)> CreatedCallback;
 660
 661   // Requests the renderer to select the region between two points in the
 662   // currently focused frame.
 663   void SelectRange(const gfx::Point& start, const gfx::Point& end);
 664
 665   // Notifies the main frame that it can continue navigation (if it was deferred
 666   // immediately at first response).
 667   void ResumeResponseDeferredAtStart();
 668
 669   // Forces overscroll to be disabled (used by touch emulation).
 670   void SetForceDisableOverscrollContent(bool force_disable);
 671
 672  private:
 673   friend class TestNavigationObserver;
 674   friend class WebContentsAddedObserver;
 675   friend class WebContentsObserver;
 676   friend class WebContents;  // To implement factory methods.
 677
 678   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 679   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 680   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 681   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 682                            CrossSiteCantPreemptAfterUnload);
 683   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 684   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 685   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
 686   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 687   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 688   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 689   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
 690
 691   // So InterstitialPageImpl can access SetIsLoading.
 692   friend class InterstitialPageImpl;
 693
 694   // TODO(brettw) TestWebContents shouldn't exist!
 695   friend class TestWebContents;
 696
 697   class DestructionObserver;
 698
 699   // See WebContents::Create for a description of these parameters.
 700   WebContentsImpl(BrowserContext* browser_context,
 701                   WebContentsImpl* opener);
 702
 703   // Add and remove observers for page navigation notifications. The order in
 704   // which notifications are sent to observers is undefined. Clients must be
 705   // sure to remove the observer before they go away.
 706   void AddObserver(WebContentsObserver* observer);
 707   void RemoveObserver(WebContentsObserver* observer);
 708
 709   // Clears this tab's opener if it has been closed.
 710   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 711
 712   // Creates and adds to the map a destruction observer watching |web_contents|.
 713   // No-op if such an observer already exists.
 714   void AddDestructionObserver(WebContentsImpl* web_contents);
 715
 716   // Deletes and removes from the map a destruction observer
 717   // watching |web_contents|. No-op if there is no such observer.
 718   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 719
 720   // Traverses all the RenderFrameHosts in the FrameTree and creates a set
 721   // all the unique RenderWidgetHostViews.
 722   std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
 723
 724   // Callback function when showing JavaScript dialogs.  Takes in a routing ID
 725   // pair to identify the RenderFrameHost that opened the dialog, because it's
 726   // possible for the RenderFrameHost to be deleted by the time this is called.
 727   void OnDialogClosed(int render_process_id,
 728                       int render_frame_id,
 729                       IPC::Message* reply_msg,
 730                       bool dialog_was_suppressed,
 731                       bool success,
 732                       const base::string16& user_input);
 733
 734   // Callback function when requesting permission to access the PPAPI broker.
 735   // |result| is true if permission was granted.
 736   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 737
 738   bool OnMessageReceived(RenderViewHost* render_view_host,
 739                          RenderFrameHost* render_frame_host,
 740                          const IPC::Message& message);
 741
 742   // IPC message handlers.
 743   void OnThemeColorChanged(SkColor theme_color);
 744   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 745                                         const std::string& security_info,
 746                                         const std::string& http_request,
 747                                         const std::string& mime_type,
 748                                         ResourceType resource_type);
 749   void OnDidDisplayInsecureContent();
 750   void OnDidRunInsecureContent(const std::string& security_origin,
 751                                const GURL& target_url);
 752   void OnDocumentLoadedInFrame();
 753   void OnDidFinishLoad(const GURL& url);
 754   void OnDidStartLoading(bool to_different_document);
 755   void OnDidStopLoading();
 756   void OnDidChangeLoadProgress(double load_progress);
 757   void OnGoToEntryAtOffset(int offset);
 758   void OnUpdateZoomLimits(int minimum_percent,
 759                           int maximum_percent);
 760   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 761
 762   void OnRegisterProtocolHandler(const std::string& protocol,
 763                                  const GURL& url,
 764                                  const base::string16& title,
 765                                  bool user_gesture);
 766   void OnUnregisterProtocolHandler(const std::string& protocol,
 767                                    const GURL& url,
 768                                    bool user_gesture);
 769   void OnFindReply(int request_id,
 770                    int number_of_matches,
 771                    const gfx::Rect& selection_rect,
 772                    int active_match_ordinal,
 773                    bool final_update);
 774 #if defined(OS_ANDROID)
 775   void OnFindMatchRectsReply(int version,
 776                              const std::vector<gfx::RectF>& rects,
 777                              const gfx::RectF& active_rect);
 778
 779   void OnOpenDateTimeDialog(
 780       const ViewHostMsg_DateTimeDialogValue_Params& value);
 781 #endif
 782   void OnPepperPluginHung(int plugin_child_id,
 783                           const base::FilePath& path,
 784                           bool is_hung);
 785   void OnPluginCrashed(const base::FilePath& plugin_path,
 786                        base::ProcessId plugin_pid);
 787   void OnDomOperationResponse(const std::string& json_string,
 788                               int automation_id);
 789   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 790   void OnOpenColorChooser(int color_chooser_id,
 791                           SkColor color,
 792                           const std::vector<ColorSuggestion>& suggestions);
 793   void OnEndColorChooser(int color_chooser_id);
 794   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 795   void OnWebUISend(const GURL& source_url,
 796                    const std::string& name,
 797                    const base::ListValue& args);
 798   void OnRequestPpapiBrokerPermission(int routing_id,
 799                                       const GURL& url,
 800                                       const base::FilePath& plugin_path);
 801   void OnBrowserPluginMessage(const IPC::Message& message);
 802   void OnDidDownloadImage(int id,
 803                           int http_status_code,
 804                           const GURL& image_url,
 805                           const std::vector<SkBitmap>& bitmaps,
 806                           const std::vector<gfx::Size>& original_bitmap_sizes);
 807   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
 808   void OnFirstVisuallyNonEmptyPaint();
 809   void OnMediaPlayingNotification(int64 player_cookie,
 810                                   bool has_video,
 811                                   bool has_audio);
 812   void OnMediaPausedNotification(int64 player_cookie);
 813   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 814                                const base::string16& main_text,
 815                                const base::string16& sub_text);
 816   void OnHideValidationMessage();
 817   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 818
 819   // Called by derived classes to indicate that we're no longer waiting for a
 820   // response. This won't actually update the throbber, but it will get picked
 821   // up at the next animation step if the throbber is going.
 822   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 823
 824   // Navigation helpers --------------------------------------------------------
 825   //
 826   // These functions are helpers for Navigate() and DidNavigate().
 827
 828   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 829   // committed to the navigation controller. Note that the navigation entry is
 830   // not provided since it may be invalid/changed after being committed. The
 831   // current navigation entry is in the NavigationController at this point.
 832
 833   // If our controller was restored, update the max page ID associated with the
 834   // given RenderViewHost to be larger than the number of restored entries.
 835   // This is called in CreateRenderView before any navigations in the RenderView
 836   // have begun, to prevent any races in updating RenderView::next_page_id.
 837   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 838
 839   // Saves the given title to the navigation entry and does associated work. It
 840   // will update history and the view for the new title, and also synthesize
 841   // titles for file URLs that have none (so we require that the URL of the
 842   // entry already be set).
 843   //
 844   // This is used as the backend for state updates, which include a new title,
 845   // or the dedicated set title message. It returns true if the new title is
 846   // different and was therefore updated.
 847   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 848                            const base::string16& title);
 849
 850   // Recursively creates swapped out RenderViews for this tab's opener chain
 851   // (including this tab) in the given SiteInstance, allowing other tabs to send
 852   // cross-process JavaScript calls to their opener(s).  Returns the route ID of
 853   // this tab's RenderView for |instance|.
 854   int CreateOpenerRenderViews(SiteInstance* instance);
 855
 856   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 857   void CreateNewWidget(int render_process_id,
 858                        int route_id,
 859                        bool is_fullscreen,
 860                        blink::WebPopupType popup_type);
 861
 862   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 863   void ShowCreatedWidget(int route_id,
 864                          bool is_fullscreen,
 865                          const gfx::Rect& initial_pos);
 866
 867   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 868   // called once as this call also removes it from the internal map.
 869   RenderWidgetHostView* GetCreatedWidget(int route_id);
 870
 871   // Finds the new WebContentsImpl by route_id, initializes it for
 872   // renderer-initiated creation, and returns it. Note that this can only be
 873   // called once as this call also removes it from the internal map.
 874   WebContentsImpl* GetCreatedWindow(int route_id);
 875
 876   // Tracking loading progress -------------------------------------------------
 877
 878   // Resets the tracking state of the current load.
 879   void ResetLoadProgressState();
 880
 881   // Calculates the progress of the current load and notifies the delegate.
 882   void SendLoadProgressChanged();
 883
 884   // Called once when the last frame on the page has stopped loading.
 885   void DidStopLoading(RenderFrameHost* render_frame_host);
 886
 887   // Misc non-view stuff -------------------------------------------------------
 888
 889   // Helper functions for sending notifications.
 890   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 891   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
 892   void NotifyDisconnected();
 893
 894   void SetEncoding(const std::string& encoding);
 895
 896   // TODO(creis): This should take in a FrameTreeNode to know which node's
 897   // render manager to return.  For now, we just return the root's.
 898   RenderFrameHostManager* GetRenderManager() const;
 899
 900   RenderViewHostImpl* GetRenderViewHostImpl();
 901
 902   // Removes browser plugin embedder if there is one.
 903   void RemoveBrowserPluginEmbedder();
 904
 905   // Clear |render_frame_host|'s PowerSaveBlockers.
 906   void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
 907
 908   // Clear all PowerSaveBlockers, leave |power_save_blocker_| empty.
 909   void ClearAllPowerSaveBlockers();
 910
 911   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 912   gfx::Size GetSizeForNewRenderView();
 913
 914   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 915
 916   // Helper method that's called whenever |preferred_size_| or
 917   // |preferred_size_for_capture_| changes, to propagate the new value to the
 918   // |delegate_|.
 919   void OnPreferredSizeChanged(const gfx::Size& old_size);
 920
 921   // Adds/removes a callback called on creation of each new WebContents.
 922   // Deprecated, about to remove.
 923   static void AddCreatedCallback(const CreatedCallback& callback);
 924   static void RemoveCreatedCallback(const CreatedCallback& callback);
 925
 926   // Data for core operation ---------------------------------------------------
 927
 928   // Delegate for notifying our owner about stuff. Not owned by us.
 929   WebContentsDelegate* delegate_;
 930
 931   // Handles the back/forward list and loading.
 932   NavigationControllerImpl controller_;
 933
 934   // The corresponding view.
 935   scoped_ptr<WebContentsView> view_;
 936
 937   // The view of the RVHD. Usually this is our WebContentsView implementation,
 938   // but if an embedder uses a different WebContentsView, they'll need to
 939   // provide this.
 940   RenderViewHostDelegateView* render_view_host_delegate_view_;
 941
 942   // Tracks created WebContentsImpl objects that have not been shown yet. They
 943   // are identified by the route ID passed to CreateNewWindow.
 944   typedef std::map<int, WebContentsImpl*> PendingContents;
 945   PendingContents pending_contents_;
 946
 947   // These maps hold on to the widgets that we created on behalf of the renderer
 948   // that haven't shown yet.
 949   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
 950   PendingWidgetViews pending_widget_views_;
 951
 952   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
 953   DestructionObservers destruction_observers_;
 954
 955   // A list of observers notified when page state changes. Weak references.
 956   // This MUST be listed above frame_tree_ since at destruction time the
 957   // latter might cause RenderViewHost's destructor to call us and we might use
 958   // the observer list then.
 959   ObserverList<WebContentsObserver> observers_;
 960
 961   // The tab that opened this tab, if any.  Will be set to null if the opener
 962   // is closed.
 963   WebContentsImpl* opener_;
 964
 965   // True if this tab was opened by another tab. This is not unset if the opener
 966   // is closed.
 967   bool created_with_opener_;
 968
 969 #if defined(OS_WIN)
 970   gfx::NativeViewAccessible accessible_parent_;
 971 #endif
 972
 973   // Helper classes ------------------------------------------------------------
 974
 975 #if !defined(OS_CHROMEOS)
 976   // Maps the RenderFrameHost to its media_player_cookie and PowerSaveBlocker
 977   // pairs. Key is the RenderFrameHost, value is the map which maps
 978   // player_cookie on to PowerSaveBlocker.
 979   //
 980   // ChromeOS does its own detection of audio and video.
 981   typedef base::ScopedPtrHashMap<int64, PowerSaveBlocker>
 982       PowerSaveBlockerMapEntry;
 983   typedef base::ScopedPtrHashMap<uintptr_t, PowerSaveBlockerMapEntry>
 984       PowerSaveBlockerMap;
 985   PowerSaveBlockerMap power_save_blockers_;
 986 #endif
 987
 988   // Manages the frame tree of the page and process swaps in each node.
 989   FrameTree frame_tree_;
 990
 991   // SavePackage, lazily created.
 992   scoped_refptr<SavePackage> save_package_;
 993
 994   // Data for loading state ----------------------------------------------------
 995
 996   // Indicates whether we're currently loading a resource.
 997   bool is_loading_;
 998
 999   // Indicates whether the current load is to a different document. Only valid
1000   // if is_loading_ is true.
1001   bool is_load_to_different_document_;
1002
1003   // Indicates if the tab is considered crashed.
1004   base::TerminationStatus crashed_status_;
1005   int crashed_error_code_;
1006
1007   // Whether this WebContents is waiting for a first-response for the
1008   // main resource of the page. This controls whether the throbber state is
1009   // "waiting" or "loading."
1010   bool waiting_for_response_;
1011
1012   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1013   // to a given tab and SiteInstance, and must be valid for the lifetime of the
1014   // WebContentsImpl.
1015   std::map<int32, int32> max_page_ids_;
1016
1017   // The current load state and the URL associated with it.
1018   net::LoadStateWithParam load_state_;
1019   base::string16 load_state_host_;
1020
1021   // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
1022   // frame's completion (from 0 to 1).
1023   typedef base::hash_map<int64, double> LoadingProgressMap;
1024   LoadingProgressMap loading_progresses_;
1025   double loading_total_progress_;
1026
1027   base::TimeTicks loading_last_progress_update_;
1028
1029   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1030
1031   // Counter to track how many frames have sent start notifications but not
1032   // stop notifications.
1033   int loading_frames_in_progress_;
1034
1035   // Upload progress, for displaying in the status bar.
1036   // Set to zero when there is no significant upload happening.
1037   uint64 upload_size_;
1038   uint64 upload_position_;
1039
1040   // Data for current page -----------------------------------------------------
1041
1042   // When a title cannot be taken from any entry, this title will be used.
1043   base::string16 page_title_when_no_navigation_entry_;
1044
1045   // When a navigation occurs, we record its contents MIME type. It can be
1046   // used to check whether we can do something for some special contents.
1047   std::string contents_mime_type_;
1048
1049   // The last reported character encoding, not canonicalized.
1050   std::string last_reported_encoding_;
1051
1052   // The canonicalized character encoding.
1053   std::string canonical_encoding_;
1054
1055   // True if this is a secure page which displayed insecure content.
1056   bool displayed_insecure_content_;
1057
1058   // Whether the initial empty page has been accessed by another page, making it
1059   // unsafe to show the pending URL. Usually false unless another window tries
1060   // to modify the blank page.  Always false after the first commit.
1061   bool has_accessed_initial_document_;
1062
1063   // Data for misc internal state ----------------------------------------------
1064
1065   // When > 0, the WebContents is currently being captured (e.g., for
1066   // screenshots or mirroring); and the underlying RenderWidgetHost should not
1067   // be told it is hidden.
1068   int capturer_count_;
1069
1070   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1071   bool should_normally_be_visible_;
1072
1073   // See getter above.
1074   bool is_being_destroyed_;
1075
1076   // Indicates whether we should notify about disconnection of this
1077   // WebContentsImpl. This is used to ensure disconnection notifications only
1078   // happen if a connection notification has happened and that they happen only
1079   // once.
1080   bool notify_disconnection_;
1081
1082   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1083   // delegate of this WebContentsImpl is nulled before its destructor is called.
1084   JavaScriptDialogManager* dialog_manager_;
1085
1086   // Set to true when there is an active "before unload" dialog.  When true,
1087   // we've forced the throbber to start in Navigate, and we need to remember to
1088   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1089   bool is_showing_before_unload_dialog_;
1090
1091   // Settings that get passed to the renderer process.
1092   RendererPreferences renderer_preferences_;
1093
1094   // The time that this WebContents was last made active. The initial value is
1095   // the WebContents creation time.
1096   base::TimeTicks last_active_time_;
1097
1098   // See description above setter.
1099   bool closed_by_user_gesture_;
1100
1101   // Minimum/maximum zoom percent.
1102   int minimum_zoom_percent_;
1103   int maximum_zoom_percent_;
1104
1105   // The raw accumulated zoom value and the actual zoom increments made for an
1106   // an in-progress pinch gesture.
1107   float totalPinchGestureAmount_;
1108   int currentPinchZoomStepDelta_;
1109
1110   // The intrinsic size of the page.
1111   gfx::Size preferred_size_;
1112
1113   // The preferred size for content screen capture.  When |capturer_count_| > 0,
1114   // this overrides |preferred_size_|.
1115   gfx::Size preferred_size_for_capture_;
1116
1117 #if defined(OS_ANDROID)
1118   // Date time chooser opened by this tab.
1119   // Only used in Android since all other platforms use a multi field UI.
1120   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1121 #endif
1122
1123   // Holds information about a current color chooser dialog, if one is visible.
1124   struct ColorChooserInfo {
1125     ColorChooserInfo(int render_process_id,
1126                      int render_frame_id,
1127                      ColorChooser* chooser,
1128                      int identifier);
1129     ~ColorChooserInfo();
1130
1131     int render_process_id;
1132     int render_frame_id;
1133
1134     // Color chooser that was opened by this tab.
1135     scoped_ptr<ColorChooser> chooser;
1136
1137     // A unique identifier for the current color chooser.  Identifiers are
1138     // unique across a renderer process.  This avoids race conditions in
1139     // synchronizing the browser and renderer processes.  For example, if a
1140     // renderer closes one chooser and opens another, and simultaneously the
1141     // user picks a color in the first chooser, the IDs can be used to drop the
1142     // "chose a color" message rather than erroneously tell the renderer that
1143     // the user picked a color in the second chooser.
1144     int identifier;
1145   };
1146
1147   scoped_ptr<ColorChooserInfo> color_chooser_info_;
1148
1149   // Manages the embedder state for browser plugins, if this WebContents is an
1150   // embedder; NULL otherwise.
1151   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1152   // Manages the guest state for browser plugin, if this WebContents is a guest;
1153   // NULL otherwise.
1154   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1155
1156   // This must be at the end, or else we might get notifications and use other
1157   // member variables that are gone.
1158   NotificationRegistrar registrar_;
1159
1160   // Used during IPC message dispatching from the RenderView/RenderFrame so that
1161   // the handlers can get a pointer to the RVH through which the message was
1162   // received.
1163   RenderViewHost* render_view_message_source_;
1164   RenderFrameHost* render_frame_message_source_;
1165
1166   // All live RenderWidgetHostImpls that are created by this object and may
1167   // outlive it.
1168   std::set<RenderWidgetHostImpl*> created_widgets_;
1169
1170   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1171   int fullscreen_widget_routing_id_;
1172
1173   // At the time the fullscreen widget was being shut down, did it have focus?
1174   // This is used to restore focus to the WebContentsView after both: 1) the
1175   // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1176   // completed making layout changes to effect an exit from fullscreen mode.
1177   bool fullscreen_widget_had_focus_at_shutdown_;
1178
1179   // Maps the ids of pending image downloads to their callbacks
1180   typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1181   ImageDownloadMap image_download_map_;
1182
1183   // Whether this WebContents is responsible for displaying a subframe in a
1184   // different process from its parent page.
1185   bool is_subframe_;
1186
1187   // Whether overscroll should be unconditionally disabled.
1188   bool force_disable_overscroll_content_;
1189
1190   // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1191   bool last_dialog_suppressed_;
1192
1193   scoped_ptr<GeolocationDispatcherHost> geolocation_dispatcher_host_;
1194
1195   scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
1196
1197   scoped_ptr<ScreenOrientationDispatcherHost>
1198       screen_orientation_dispatcher_host_;
1199
1200   // The accessibility mode for all frames. This is queried when each frame
1201   // is created, and broadcast to all frames when it changes.
1202   AccessibilityMode accessibility_mode_;
1203
1204   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1205 };
1206
1207 }  // namespace content
1208
1209 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_