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/media/audio_stream_monitor.h"
  26 #include "content/browser/renderer_host/render_view_host_delegate.h"
  27 #include "content/browser/renderer_host/render_widget_host_delegate.h"
  28 #include "content/common/accessibility_mode_enums.h"
  29 #include "content/common/content_export.h"
  30 #include "content/public/browser/color_chooser.h"
  31 #include "content/public/browser/notification_observer.h"
  32 #include "content/public/browser/notification_registrar.h"
  33 #include "content/public/browser/web_contents.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/base/page_transition_types.h"
  41 #include "ui/gfx/geometry/rect_f.h"
  42 #include "ui/gfx/geometry/size.h"
  43
  44 struct BrowserPluginHostMsg_ResizeGuest_Params;
  45 struct ViewHostMsg_DateTimeDialogValue_Params;
  46 struct ViewMsg_PostMessage_Params;
  47
  48 namespace content {
  49 class BrowserPluginEmbedder;
  50 class BrowserPluginGuest;
  51 class BrowserPluginGuestManager;
  52 class DateTimeChooserAndroid;
  53 class DownloadItem;
  54 class GeolocationServiceContext;
  55 class InterstitialPageImpl;
  56 class JavaScriptDialogManager;
  57 class ManifestManagerHost;
  58 class PluginContentOriginWhitelist;
  59 class PowerSaveBlocker;
  60 class RenderViewHost;
  61 class RenderViewHostDelegateView;
  62 class RenderViewHostImpl;
  63 class RenderWidgetHostImpl;
  64 class SavePackage;
  65 class ScreenOrientationDispatcherHost;
  66 class SiteInstance;
  67 class TestWebContents;
  68 class WebContentsAudioMuter;
  69 class WebContentsDelegate;
  70 class WebContentsImpl;
  71 class WebContentsObserver;
  72 class WebContentsView;
  73 class WebContentsViewDelegate;
  74 struct AXEventNotificationDetails;
  75 struct ColorSuggestion;
  76 struct FaviconURL;
  77 struct LoadNotificationDetails;
  78 struct ResourceRedirectDetails;
  79 struct ResourceRequestDetails;
  80
  81 #if defined(OS_ANDROID)
  82 class WebContentsAndroid;
  83 #endif
  84
  85 // Factory function for the implementations that content knows about. Takes
  86 // ownership of |delegate|.
  87 WebContentsView* CreateWebContentsView(
  88     WebContentsImpl* web_contents,
  89     WebContentsViewDelegate* delegate,
  90     RenderViewHostDelegateView** render_view_host_delegate_view);
  91
  92 class CONTENT_EXPORT WebContentsImpl
  93     : public NON_EXPORTED_BASE(WebContents),
  94       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  95       public RenderViewHostDelegate,
  96       public RenderWidgetHostDelegate,
  97       public RenderFrameHostManager::Delegate,
  98       public NotificationObserver,
  99       public NON_EXPORTED_BASE(NavigationControllerDelegate),
 100       public NON_EXPORTED_BASE(NavigatorDelegate) {
 101  public:
 102   class FriendZone;
 103
 104   ~WebContentsImpl() override;
 105
 106   static WebContentsImpl* CreateWithOpener(
 107       const WebContents::CreateParams& params,
 108       WebContentsImpl* opener);
 109
 110   static std::vector<WebContentsImpl*> GetAllWebContents();
 111
 112   // Returns the opener WebContentsImpl, if any. This can be set to null if the
 113   // opener is closed or the page clears its window.opener.
 114   WebContentsImpl* opener() const { return opener_; }
 115
 116   // Creates a swapped out RenderView. This is used by the browser plugin to
 117   // create a swapped out RenderView in the embedder render process for the
 118   // guest, to expose the guest's window object to the embedder.
 119   // This returns the routing ID of the newly created swapped out RenderView.
 120   int CreateSwappedOutRenderView(SiteInstance* instance);
 121
 122   // Complex initialization here. Specifically needed to avoid having
 123   // members call back into our virtual functions in the constructor.
 124   virtual void Init(const WebContents::CreateParams& params);
 125
 126   // Returns the SavePackage which manages the page saving job. May be NULL.
 127   SavePackage* save_package() const { return save_package_.get(); }
 128
 129 #if defined(OS_ANDROID)
 130   // In Android WebView, the RenderView needs created even there is no
 131   // navigation entry, this allows Android WebViews to use
 132   // javascript: URLs that load into the DOMWindow before the first page
 133   // load. This is not safe to do in any context that a web page could get a
 134   // reference to the DOMWindow before the first page load.
 135   bool CreateRenderViewForInitialEmptyDocument();
 136 #endif
 137
 138   // Expose the render manager for testing.
 139   // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
 140   RenderFrameHostManager* GetRenderManagerForTesting();
 141
 142   // Returns guest browser plugin object, or NULL if this WebContents is not a
 143   // guest.
 144   BrowserPluginGuest* GetBrowserPluginGuest() const;
 145
 146   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 147   // has a BrowserPluginGuest then that implies that it is being hosted by
 148   // a BrowserPlugin object in an embedder renderer process.
 149   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 150
 151   // Returns embedder browser plugin object, or NULL if this WebContents is not
 152   // an embedder.
 153   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 154
 155   // Gets the current fullscreen render widget's routing ID. Returns
 156   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 157   int GetFullscreenWidgetRoutingID() const;
 158
 159   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 160   void DidChangeVisibleSSLState();
 161
 162   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 163   // a Drag Source End.
 164   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 165       int screen_y, blink::WebDragOperation operation);
 166
 167   // A response has been received for a resource request.
 168   void DidGetResourceResponseStart(
 169       const ResourceRequestDetails& details);
 170
 171   // A redirect was received while requesting a resource.
 172   void DidGetRedirectForResourceRequest(
 173       RenderFrameHost* render_frame_host,
 174       const ResourceRedirectDetails& details);
 175
 176   WebContentsView* GetView() const;
 177
 178   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
 179     return screen_orientation_dispatcher_host_.get();
 180   }
 181
 182   bool should_normally_be_visible() { return should_normally_be_visible_; }
 183
 184   // Broadcasts the mode change to all frames.
 185   void SetAccessibilityMode(AccessibilityMode mode);
 186
 187   // Adds the given accessibility mode to the current accessibility mode
 188   // bitmap.
 189   void AddAccessibilityMode(AccessibilityMode mode);
 190
 191   // Removes the given accessibility mode from the current accessibility
 192   // mode bitmap, managing the bits that are shared with other modes such
 193   // that a bit will only be turned off when all modes that depend on it
 194   // have been removed.
 195   void RemoveAccessibilityMode(AccessibilityMode mode);
 196
 197   // Clear the navigation transition data when the user navigates back to Chrome
 198   // from a native app.
 199   void ClearNavigationTransitionData();
 200
 201   // WebContents ------------------------------------------------------
 202   WebContentsDelegate* GetDelegate() override;
 203   void SetDelegate(WebContentsDelegate* delegate) override;
 204   NavigationControllerImpl& GetController() override;
 205   const NavigationControllerImpl& GetController() const override;
 206   BrowserContext* GetBrowserContext() const override;
 207   const GURL& GetURL() const override;
 208   const GURL& GetVisibleURL() const override;
 209   const GURL& GetLastCommittedURL() const override;
 210   RenderProcessHost* GetRenderProcessHost() const override;
 211   RenderFrameHost* GetMainFrame() override;
 212   RenderFrameHost* GetFocusedFrame() override;
 213   void ForEachFrame(
 214       const base::Callback<void(RenderFrameHost*)>& on_frame) override;
 215   void SendToAllFrames(IPC::Message* message) override;
 216   RenderViewHost* GetRenderViewHost() const override;
 217   int GetRoutingID() const override;
 218   RenderWidgetHostView* GetRenderWidgetHostView() const override;
 219   RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const override;
 220   WebUI* CreateWebUI(const GURL& url) override;
 221   WebUI* GetWebUI() const override;
 222   WebUI* GetCommittedWebUI() const override;
 223   void SetUserAgentOverride(const std::string& override) override;
 224   const std::string& GetUserAgentOverride() const override;
 225   void EnableTreeOnlyAccessibilityMode() override;
 226   bool IsTreeOnlyAccessibilityModeForTesting() const override;
 227   bool IsFullAccessibilityModeForTesting() const override;
 228 #if defined(OS_WIN)
 229   virtual void SetParentNativeViewAccessible(
 230       gfx::NativeViewAccessible accessible_parent) override;
 231 #endif
 232   const base::string16& GetTitle() const override;
 233   int32 GetMaxPageID() override;
 234   int32 GetMaxPageIDForSiteInstance(SiteInstance* site_instance) override;
 235   SiteInstanceImpl* GetSiteInstance() const override;
 236   SiteInstanceImpl* GetPendingSiteInstance() const override;
 237   bool IsLoading() const override;
 238   bool IsLoadingToDifferentDocument() const override;
 239   bool IsWaitingForResponse() const override;
 240   const net::LoadStateWithParam& GetLoadState() const override;
 241   const base::string16& GetLoadStateHost() const override;
 242   uint64 GetUploadSize() const override;
 243   uint64 GetUploadPosition() const override;
 244   std::set<GURL> GetSitesInTab() const override;
 245   const std::string& GetEncoding() const override;
 246   bool DisplayedInsecureContent() const override;
 247   void IncrementCapturerCount(const gfx::Size& capture_size) override;
 248   void DecrementCapturerCount() override;
 249   int GetCapturerCount() const override;
 250   bool IsAudioMuted() const override;
 251   void SetAudioMuted(bool mute) override;
 252   bool IsCrashed() const override;
 253   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
 254   base::TerminationStatus GetCrashedStatus() const override;
 255   bool IsBeingDestroyed() const override;
 256   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
 257   base::TimeTicks GetLastActiveTime() const override;
 258   void WasShown() override;
 259   void WasHidden() override;
 260   bool NeedToFireBeforeUnload() override;
 261   void DispatchBeforeUnload(bool for_cross_site_transition) override;
 262   void Stop() override;
 263   WebContents* Clone() override;
 264   void ReloadFocusedFrame(bool ignore_cache) override;
 265   void Undo() override;
 266   void Redo() override;
 267   void Cut() override;
 268   void Copy() override;
 269   void CopyToFindPboard() override;
 270   void Paste() override;
 271   void PasteAndMatchStyle() override;
 272   void Delete() override;
 273   void SelectAll() override;
 274   void Unselect() override;
 275   void Replace(const base::string16& word) override;
 276   void ReplaceMisspelling(const base::string16& word) override;
 277   void NotifyContextMenuClosed(
 278       const CustomContextMenuContext& context) override;
 279   void ExecuteCustomContextMenuCommand(
 280       int action,
 281       const CustomContextMenuContext& context) override;
 282   gfx::NativeView GetNativeView() override;
 283   gfx::NativeView GetContentNativeView() override;
 284   gfx::NativeWindow GetTopLevelNativeWindow() override;
 285   gfx::Rect GetContainerBounds() override;
 286   gfx::Rect GetViewBounds() override;
 287   DropData* GetDropData() override;
 288   void Focus() override;
 289   void SetInitialFocus() override;
 290   void StoreFocus() override;
 291   void RestoreFocus() override;
 292   void FocusThroughTabTraversal(bool reverse) override;
 293   bool ShowingInterstitialPage() const override;
 294   InterstitialPage* GetInterstitialPage() const override;
 295   bool IsSavable() override;
 296   void OnSavePage() override;
 297   bool SavePage(const base::FilePath& main_file,
 298                 const base::FilePath& dir_path,
 299                 SavePageType save_type) override;
 300   void SaveFrame(const GURL& url, const Referrer& referrer) override;
 301   void GenerateMHTML(const base::FilePath& file,
 302                      const base::Callback<void(int64)>& callback) override;
 303   const std::string& GetContentsMimeType() const override;
 304   bool WillNotifyDisconnection() const override;
 305   void SetOverrideEncoding(const std::string& encoding) override;
 306   void ResetOverrideEncoding() override;
 307   RendererPreferences* GetMutableRendererPrefs() override;
 308   void Close() override;
 309   void SystemDragEnded() override;
 310   void UserGestureDone() override;
 311   void SetClosedByUserGesture(bool value) override;
 312   bool GetClosedByUserGesture() const override;
 313   void ViewSource() override;
 314   void ViewFrameSource(const GURL& url, const PageState& page_state) override;
 315   int GetMinimumZoomPercent() const override;
 316   int GetMaximumZoomPercent() const override;
 317   gfx::Size GetPreferredSize() const override;
 318   bool GotResponseToLockMouseRequest(bool allowed) override;
 319   bool HasOpener() const override;
 320   WebContents* GetOpener() const override;
 321   void DidChooseColorInColorChooser(SkColor color) override;
 322   void DidEndColorChooser() override;
 323   int DownloadImage(const GURL& url,
 324                     bool is_favicon,
 325                     uint32_t max_bitmap_size,
 326                     const ImageDownloadCallback& callback) override;
 327   bool IsSubframe() const override;
 328   void Find(int request_id,
 329             const base::string16& search_text,
 330             const blink::WebFindOptions& options) override;
 331   void StopFinding(StopFindAction action) override;
 332   void InsertCSS(const std::string& css) override;
 333   bool WasRecentlyAudible() override;
 334   void GetManifest(const GetManifestCallback&) override;
 335 #if defined(OS_ANDROID)
 336   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
 337       override;
 338   virtual WebContentsAndroid* GetWebContentsAndroid();
 339 #elif defined(OS_MACOSX)
 340   void SetAllowOtherViews(bool allow) override;
 341   bool GetAllowOtherViews() override;
 342 #endif
 343
 344   // Implementation of PageNavigator.
 345   WebContents* OpenURL(const OpenURLParams& params) override;
 346
 347   // Implementation of IPC::Sender.
 348   bool Send(IPC::Message* message) override;
 349
 350   // RenderFrameHostDelegate ---------------------------------------------------
 351   bool OnMessageReceived(RenderFrameHost* render_frame_host,
 352                          const IPC::Message& message) override;
 353   const GURL& GetMainFrameLastCommittedURL() const override;
 354   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
 355   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
 356   void DidStartLoading(RenderFrameHost* render_frame_host,
 357                        bool to_different_document) override;
 358   void DidStopLoading(RenderFrameHost* render_frame_host) override;
 359   void SwappedOut(RenderFrameHost* render_frame_host) override;
 360   void DidDeferAfterResponseStarted(
 361       const TransitionLayerData& transition_data) override;
 362   bool WillHandleDeferAfterResponseStarted() override;
 363   void WorkerCrashed(RenderFrameHost* render_frame_host) override;
 364   void ShowContextMenu(RenderFrameHost* render_frame_host,
 365                        const ContextMenuParams& params) override;
 366   void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
 367                             const base::string16& message,
 368                             const base::string16& default_prompt,
 369                             const GURL& frame_url,
 370                             JavaScriptMessageType type,
 371                             IPC::Message* reply_msg) override;
 372   void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
 373                               const base::string16& message,
 374                               bool is_reload,
 375                               IPC::Message* reply_msg) override;
 376   void DidAccessInitialDocument() override;
 377   void DidDisownOpener(RenderFrameHost* render_frame_host) override;
 378   void DocumentOnLoadCompleted(RenderFrameHost* render_frame_host) override;
 379   void UpdateTitle(RenderFrameHost* render_frame_host,
 380                    int32 page_id,
 381                    const base::string16& title,
 382                    base::i18n::TextDirection title_direction) override;
 383   void UpdateEncoding(RenderFrameHost* render_frame_host,
 384                       const std::string& encoding) override;
 385   WebContents* GetAsWebContents() override;
 386   bool IsNeverVisible() override;
 387   AccessibilityMode GetAccessibilityMode() const override;
 388   void AccessibilityEventReceived(
 389       const std::vector<AXEventNotificationDetails>& details) override;
 390   RenderFrameHost* GetGuestByInstanceID(
 391       int browser_plugin_instance_id) override;
 392   GeolocationServiceContext* GetGeolocationServiceContext() override;
 393 #if defined(OS_WIN)
 394   gfx::NativeViewAccessible GetParentNativeViewAccessible() override;
 395 #endif
 396
 397   // RenderViewHostDelegate ----------------------------------------------------
 398   RenderViewHostDelegateView* GetDelegateView() override;
 399   bool OnMessageReceived(RenderViewHost* render_view_host,
 400                          const IPC::Message& message) override;
 401   // RenderFrameHostDelegate has the same method, so list it there because this
 402   // interface is going away.
 403   // virtual WebContents* GetAsWebContents() override;
 404   gfx::Rect GetRootWindowResizerRect() const override;
 405   void RenderViewCreated(RenderViewHost* render_view_host) override;
 406   void RenderViewReady(RenderViewHost* render_view_host) override;
 407   void RenderViewTerminated(RenderViewHost* render_view_host,
 408                             base::TerminationStatus status,
 409                             int error_code) override;
 410   void RenderViewDeleted(RenderViewHost* render_view_host) override;
 411   void UpdateState(RenderViewHost* render_view_host,
 412                    int32 page_id,
 413                    const PageState& page_state) override;
 414   void UpdateTargetURL(const GURL& url) override;
 415   void Close(RenderViewHost* render_view_host) override;
 416   void RequestMove(const gfx::Rect& new_bounds) override;
 417   void DidCancelLoading() override;
 418   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
 419   void RouteCloseEvent(RenderViewHost* rvh) override;
 420   void RouteMessageEvent(RenderViewHost* rvh,
 421                          const ViewMsg_PostMessage_Params& params) override;
 422   bool AddMessageToConsole(int32 level,
 423                            const base::string16& message,
 424                            int32 line_no,
 425                            const base::string16& source_id) override;
 426   RendererPreferences GetRendererPrefs(
 427       BrowserContext* browser_context) const override;
 428   WebPreferences ComputeWebkitPrefs() override;
 429   void OnUserGesture() override;
 430   void OnIgnoredUIEvent() override;
 431   void RendererUnresponsive(RenderViewHost* render_view_host) override;
 432   void RendererResponsive(RenderViewHost* render_view_host) override;
 433   void LoadStateChanged(const GURL& url,
 434                         const net::LoadStateWithParam& load_state,
 435                         uint64 upload_position,
 436                         uint64 upload_size) override;
 437   void Activate() override;
 438   void Deactivate() override;
 439   void LostCapture() override;
 440   void HandleMouseDown() override;
 441   void HandleMouseUp() override;
 442   void HandlePointerActivate() override;
 443   void HandleGestureBegin() override;
 444   void HandleGestureEnd() override;
 445   void RunFileChooser(RenderViewHost* render_view_host,
 446                       const FileChooserParams& params) override;
 447   void ToggleFullscreenMode(bool enter_fullscreen) override;
 448   bool IsFullscreenForCurrentTab() const override;
 449   void UpdatePreferredSize(const gfx::Size& pref_size) override;
 450   void ResizeDueToAutoResize(const gfx::Size& new_size) override;
 451   void RequestToLockMouse(bool user_gesture,
 452                           bool last_unlocked_by_target) override;
 453   void LostMouseLock() override;
 454   void CreateNewWindow(
 455       int render_process_id,
 456       int route_id,
 457       int main_frame_route_id,
 458       const ViewHostMsg_CreateWindow_Params& params,
 459       SessionStorageNamespace* session_storage_namespace) override;
 460   void CreateNewWidget(int render_process_id,
 461                        int route_id,
 462                        blink::WebPopupType popup_type) override;
 463   void CreateNewFullscreenWidget(int render_process_id, int route_id) override;
 464   void ShowCreatedWindow(int route_id,
 465                          WindowOpenDisposition disposition,
 466                          const gfx::Rect& initial_pos,
 467                          bool user_gesture) override;
 468   void ShowCreatedWidget(int route_id, const gfx::Rect& initial_pos) override;
 469   void ShowCreatedFullscreenWidget(int route_id) override;
 470   void RequestMediaAccessPermission(
 471       const MediaStreamRequest& request,
 472       const MediaResponseCallback& callback) override;
 473   bool CheckMediaAccessPermission(const GURL& security_origin,
 474                                   MediaStreamType type) override;
 475   SessionStorageNamespace* GetSessionStorageNamespace(
 476       SiteInstance* instance) override;
 477   SessionStorageNamespaceMap GetSessionStorageNamespaceMap() override;
 478   FrameTree* GetFrameTree() override;
 479   void SetIsVirtualKeyboardRequested(bool requested) override;
 480   bool IsVirtualKeyboardRequested() override;
 481
 482
 483   // NavigatorDelegate ---------------------------------------------------------
 484
 485   void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 486                                const GURL& validated_url,
 487                                bool is_error_page,
 488                                bool is_iframe_srcdoc) override;
 489   void DidStartNavigationTransition(
 490       RenderFrameHostImpl* render_frame_host) override;
 491   void DidFailProvisionalLoadWithError(
 492       RenderFrameHostImpl* render_frame_host,
 493       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 494       override;
 495   void DidFailLoadWithError(RenderFrameHostImpl* render_frame_host,
 496                             const GURL& url,
 497                             int error_code,
 498                             const base::string16& error_description) override;
 499   void DidCommitProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 500                                 const GURL& url,
 501                                 ui::PageTransition transition_type) override;
 502   void DidNavigateMainFramePreCommit(bool navigation_is_within_page) override;
 503   void DidNavigateMainFramePostCommit(
 504       const LoadCommittedDetails& details,
 505       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 506   void DidNavigateAnyFramePostCommit(
 507       RenderFrameHostImpl* render_frame_host,
 508       const LoadCommittedDetails& details,
 509       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 510   void SetMainFrameMimeType(const std::string& mime_type) override;
 511   bool CanOverscrollContent() const override;
 512   void NotifyChangedNavigationState(InvalidateTypes changed_flags) override;
 513   void AboutToNavigateRenderFrame(
 514       RenderFrameHostImpl* render_frame_host) override;
 515   void DidStartNavigationToPendingEntry(
 516       RenderFrameHostImpl* render_frame_host,
 517       const GURL& url,
 518       NavigationController::ReloadType reload_type) override;
 519   void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 520                       const OpenURLParams& params) override;
 521   bool ShouldPreserveAbortedURLs() override;
 522
 523   // RenderWidgetHostDelegate --------------------------------------------------
 524
 525   void RenderWidgetDeleted(RenderWidgetHostImpl* render_widget_host) override;
 526   void RenderWidgetGotFocus(RenderWidgetHostImpl* render_widget_host) override;
 527   bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
 528                               bool* is_keyboard_shortcut) override;
 529   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override;
 530   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override;
 531   bool PreHandleGestureEvent(const blink::WebGestureEvent& event) override;
 532   bool HandleGestureEvent(const blink::WebGestureEvent& event) override;
 533   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
 534   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
 535   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
 536       override;
 537
 538   // RenderFrameHostManager::Delegate ------------------------------------------
 539
 540   bool CreateRenderViewForRenderManager(
 541       RenderViewHost* render_view_host,
 542       int opener_route_id,
 543       int proxy_routing_id,
 544       bool for_main_frame_navigation) override;
 545   bool CreateRenderFrameForRenderManager(RenderFrameHost* render_frame_host,
 546                                          int parent_routing_id,
 547                                          int proxy_routing_id) override;
 548   void BeforeUnloadFiredFromRenderManager(
 549       bool proceed,
 550       const base::TimeTicks& proceed_time,
 551       bool* proceed_to_fire_unload) override;
 552   void RenderProcessGoneFromRenderManager(
 553       RenderViewHost* render_view_host) override;
 554   void UpdateRenderViewSizeForRenderManager() override;
 555   void CancelModalDialogsForRenderManager() override;
 556   void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
 557                                       RenderFrameHost* new_host,
 558                                       bool is_main_frame) override;
 559   int CreateOpenerRenderViewsForRenderManager(SiteInstance* instance) override;
 560   NavigationControllerImpl& GetControllerForRenderManager() override;
 561   scoped_ptr<WebUIImpl> CreateWebUIForRenderManager(const GURL& url) override;
 562   NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() override;
 563   bool FocusLocationBarByDefault() override;
 564   void SetFocusToLocationBar(bool select_all) override;
 565   bool IsHidden() override;
 566
 567   // NotificationObserver ------------------------------------------------------
 568
 569   void Observe(int type,
 570                const NotificationSource& source,
 571                const NotificationDetails& details) override;
 572
 573   // NavigationControllerDelegate ----------------------------------------------
 574
 575   WebContents* GetWebContents() override;
 576   void NotifyNavigationEntryCommitted(
 577       const LoadCommittedDetails& load_details) override;
 578
 579   // Invoked before a form repost warning is shown.
 580   void NotifyBeforeFormRepostWarningShow() override;
 581
 582   // Activate this WebContents and show a form repost warning.
 583   void ActivateAndShowRepostFormWarningDialog() override;
 584
 585   // Whether the initial empty page of this view has been accessed by another
 586   // page, making it unsafe to show the pending URL. Always false after the
 587   // first commit.
 588   bool HasAccessedInitialDocument() override;
 589
 590   // Updates the max page ID for the current SiteInstance in this
 591   // WebContentsImpl to be at least |page_id|.
 592   void UpdateMaxPageID(int32 page_id) override;
 593
 594   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 595   // to be at least |page_id|.
 596   void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 597                                       int32 page_id) override;
 598
 599   // Copy the current map of SiteInstance ID to max page ID from another tab.
 600   // This is necessary when this tab adopts the NavigationEntries from
 601   // |web_contents|.
 602   void CopyMaxPageIDsFrom(WebContents* web_contents) override;
 603
 604   // Called by the NavigationController to cause the WebContentsImpl to navigate
 605   // to the current pending entry. The NavigationController should be called
 606   // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
 607   // The callbacks can be inside of this function, or at some future time.
 608   //
 609   // The entry has a PageID of -1 if newly created (corresponding to navigation
 610   // to a new URL).
 611   //
 612   // If this method returns false, then the navigation is discarded (equivalent
 613   // to calling DiscardPendingEntry on the NavigationController).
 614   bool NavigateToPendingEntry(
 615       NavigationController::ReloadType reload_type) override;
 616
 617   // Sets the history for this WebContentsImpl to |history_length| entries, with
 618   // an offset of |history_offset|.
 619   void SetHistoryOffsetAndLength(int history_offset,
 620                                  int history_length) override;
 621
 622   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 623   void RenderFrameForInterstitialPageCreated(
 624       RenderFrameHost* render_frame_host) override;
 625
 626   // Sets the passed interstitial as the currently showing interstitial.
 627   // No interstitial page should already be attached.
 628   void AttachInterstitialPage(InterstitialPageImpl* interstitial_page) override;
 629
 630   // Unsets the currently showing interstitial.
 631   void DetachInterstitialPage() override;
 632
 633   // Changes the IsLoading state and notifies the delegate as needed.
 634   // |details| is used to provide details on the load that just finished
 635   // (but can be null if not applicable).
 636   void SetIsLoading(RenderViewHost* render_view_host,
 637                     bool is_loading,
 638                     bool to_different_document,
 639                     LoadNotificationDetails* details) override;
 640
 641   typedef base::Callback<void(WebContents*)> CreatedCallback;
 642
 643   // Requests the renderer to move the selection extent to a new position.
 644   void MoveRangeSelectionExtent(const gfx::Point& extent);
 645
 646   // Requests the renderer to select the region between two points in the
 647   // currently focused frame.
 648   void SelectRange(const gfx::Point& base, const gfx::Point& extent);
 649
 650   // Notifies the main frame that it can continue navigation (if it was deferred
 651   // immediately at first response).
 652   void ResumeResponseDeferredAtStart();
 653
 654   // Forces overscroll to be disabled (used by touch emulation).
 655   void SetForceDisableOverscrollContent(bool force_disable);
 656
 657   AudioStreamMonitor* audio_stream_monitor() {
 658     return &audio_stream_monitor_;
 659   }
 660
 661   bool has_audio_power_save_blocker_for_testing() const {
 662     return audio_power_save_blocker_;
 663   }
 664
 665   bool has_video_power_save_blocker_for_testing() const {
 666     return video_power_save_blocker_;
 667   }
 668
 669  private:
 670   friend class WebContentsObserver;
 671   friend class WebContents;  // To implement factory methods.
 672
 673   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 674   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 675   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 676   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 677                            CrossSiteCantPreemptAfterUnload);
 678   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 679   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 680   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
 681   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 682   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 683   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 684   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
 685   FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
 686                            CrossSiteIframeAccessibility);
 687
 688   // So InterstitialPageImpl can access SetIsLoading.
 689   friend class InterstitialPageImpl;
 690
 691   // TODO(brettw) TestWebContents shouldn't exist!
 692   friend class TestWebContents;
 693
 694   class DestructionObserver;
 695
 696   // See WebContents::Create for a description of these parameters.
 697   WebContentsImpl(BrowserContext* browser_context,
 698                   WebContentsImpl* opener);
 699
 700   // Add and remove observers for page navigation notifications. The order in
 701   // which notifications are sent to observers is undefined. Clients must be
 702   // sure to remove the observer before they go away.
 703   void AddObserver(WebContentsObserver* observer);
 704   void RemoveObserver(WebContentsObserver* observer);
 705
 706   // Clears this tab's opener if it has been closed.
 707   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 708
 709   // Creates and adds to the map a destruction observer watching |web_contents|.
 710   // No-op if such an observer already exists.
 711   void AddDestructionObserver(WebContentsImpl* web_contents);
 712
 713   // Deletes and removes from the map a destruction observer
 714   // watching |web_contents|. No-op if there is no such observer.
 715   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 716
 717   // Traverses all the RenderFrameHosts in the FrameTree and creates a set
 718   // all the unique RenderWidgetHostViews.
 719   std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
 720
 721   // Callback function when showing JavaScript dialogs.  Takes in a routing ID
 722   // pair to identify the RenderFrameHost that opened the dialog, because it's
 723   // possible for the RenderFrameHost to be deleted by the time this is called.
 724   void OnDialogClosed(int render_process_id,
 725                       int render_frame_id,
 726                       IPC::Message* reply_msg,
 727                       bool dialog_was_suppressed,
 728                       bool success,
 729                       const base::string16& user_input);
 730
 731   bool OnMessageReceived(RenderViewHost* render_view_host,
 732                          RenderFrameHost* render_frame_host,
 733                          const IPC::Message& message);
 734
 735   // IPC message handlers.
 736   void OnThemeColorChanged(SkColor theme_color);
 737   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 738                                         const std::string& security_info,
 739                                         const std::string& http_request,
 740                                         const std::string& mime_type,
 741                                         ResourceType resource_type);
 742   void OnDidDisplayInsecureContent();
 743   void OnDidRunInsecureContent(const std::string& security_origin,
 744                                const GURL& target_url);
 745   void OnDocumentLoadedInFrame();
 746   void OnDidFinishLoad(const GURL& url);
 747   void OnDidStartLoading(bool to_different_document);
 748   void OnDidStopLoading();
 749   void OnDidChangeLoadProgress(double load_progress);
 750   void OnGoToEntryAtOffset(int offset);
 751   void OnUpdateZoomLimits(int minimum_percent,
 752                           int maximum_percent);
 753   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 754
 755   void OnRegisterProtocolHandler(const std::string& protocol,
 756                                  const GURL& url,
 757                                  const base::string16& title,
 758                                  bool user_gesture);
 759   void OnUnregisterProtocolHandler(const std::string& protocol,
 760                                    const GURL& url,
 761                                    bool user_gesture);
 762   void OnFindReply(int request_id,
 763                    int number_of_matches,
 764                    const gfx::Rect& selection_rect,
 765                    int active_match_ordinal,
 766                    bool final_update);
 767 #if defined(OS_ANDROID)
 768   void OnFindMatchRectsReply(int version,
 769                              const std::vector<gfx::RectF>& rects,
 770                              const gfx::RectF& active_rect);
 771
 772   void OnOpenDateTimeDialog(
 773       const ViewHostMsg_DateTimeDialogValue_Params& value);
 774 #endif
 775   void OnDomOperationResponse(const std::string& json_string,
 776                               int automation_id);
 777   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 778   void OnOpenColorChooser(int color_chooser_id,
 779                           SkColor color,
 780                           const std::vector<ColorSuggestion>& suggestions);
 781   void OnEndColorChooser(int color_chooser_id);
 782   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 783   void OnWebUISend(const GURL& source_url,
 784                    const std::string& name,
 785                    const base::ListValue& args);
 786 #if defined(ENABLE_PLUGINS)
 787   void OnPepperPluginHung(int plugin_child_id,
 788                           const base::FilePath& path,
 789                           bool is_hung);
 790   void OnPluginCrashed(const base::FilePath& plugin_path,
 791                        base::ProcessId plugin_pid);
 792   void OnRequestPpapiBrokerPermission(int routing_id,
 793                                       const GURL& url,
 794                                       const base::FilePath& plugin_path);
 795
 796   // Callback function when requesting permission to access the PPAPI broker.
 797   // |result| is true if permission was granted.
 798   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 799
 800   void OnBrowserPluginMessage(const IPC::Message& message);
 801 #endif  // defined(ENABLE_PLUGINS)
 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                                   bool is_remote);
 813   void OnMediaPausedNotification(int64 player_cookie);
 814   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 815                                const base::string16& main_text,
 816                                const base::string16& sub_text);
 817   void OnHideValidationMessage();
 818   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 819
 820   // Called by derived classes to indicate that we're no longer waiting for a
 821   // response. This won't actually update the throbber, but it will get picked
 822   // up at the next animation step if the throbber is going.
 823   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 824
 825   // Navigation helpers --------------------------------------------------------
 826   //
 827   // These functions are helpers for Navigate() and DidNavigate().
 828
 829   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 830   // committed to the navigation controller. Note that the navigation entry is
 831   // not provided since it may be invalid/changed after being committed. The
 832   // current navigation entry is in the NavigationController at this point.
 833
 834   // If our controller was restored, update the max page ID associated with the
 835   // given RenderViewHost to be larger than the number of restored entries.
 836   // This is called in CreateRenderView before any navigations in the RenderView
 837   // have begun, to prevent any races in updating RenderView::next_page_id.
 838   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 839
 840   // Saves the given title to the navigation entry and does associated work. It
 841   // will update history and the view for the new title, and also synthesize
 842   // titles for file URLs that have none (so we require that the URL of the
 843   // entry already be set).
 844   //
 845   // This is used as the backend for state updates, which include a new title,
 846   // or the dedicated set title message. It returns true if the new title is
 847   // different and was therefore updated.
 848   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 849                            const base::string16& title);
 850
 851   // Recursively creates swapped out RenderViews for this tab's opener chain
 852   // (including this tab) in the given SiteInstance, allowing other tabs to send
 853   // cross-process JavaScript calls to their opener(s).  Returns the route ID of
 854   // this tab's RenderView for |instance|.
 855   int CreateOpenerRenderViews(SiteInstance* instance);
 856
 857   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 858   void CreateNewWidget(int render_process_id,
 859                        int route_id,
 860                        bool is_fullscreen,
 861                        blink::WebPopupType popup_type);
 862
 863   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 864   void ShowCreatedWidget(int route_id,
 865                          bool is_fullscreen,
 866                          const gfx::Rect& initial_pos);
 867
 868   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 869   // called once as this call also removes it from the internal map.
 870   RenderWidgetHostView* GetCreatedWidget(int route_id);
 871
 872   // Finds the new WebContentsImpl by route_id, initializes it for
 873   // renderer-initiated creation, and returns it. Note that this can only be
 874   // called once as this call also removes it from the internal map.
 875   WebContentsImpl* GetCreatedWindow(int route_id);
 876
 877   // Tracking loading progress -------------------------------------------------
 878
 879   // Resets the tracking state of the current load.
 880   void ResetLoadProgressState();
 881
 882   // Calculates the progress of the current load and notifies the delegate.
 883   void SendLoadProgressChanged();
 884
 885   // Misc non-view stuff -------------------------------------------------------
 886
 887   // Sets the history for a specified RenderViewHost to |history_length|
 888   // entries, with an offset of |history_offset|.
 889   void SetHistoryOffsetAndLengthForView(RenderViewHost* render_view_host,
 890                                         int history_offset,
 891                                         int history_length);
 892
 893   // Helper functions for sending notifications.
 894   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 895   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
 896   void NotifyDisconnected();
 897
 898   void SetEncoding(const std::string& encoding);
 899
 900   // TODO(creis): This should take in a FrameTreeNode to know which node's
 901   // render manager to return.  For now, we just return the root's.
 902   RenderFrameHostManager* GetRenderManager() const;
 903
 904   RenderViewHostImpl* GetRenderViewHostImpl();
 905
 906   // Removes browser plugin embedder if there is one.
 907   void RemoveBrowserPluginEmbedder();
 908
 909   // Clear |render_frame_host|'s tracking entry for its power save blockers.
 910   void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
 911
 912   // Clear tracking entries for all RenderFrameHosts, clears
 913   // |audio_power_save_blocker_| and |video_power_save_blocker_|.
 914   void ClearAllPowerSaveBlockers();
 915
 916   // Creates an audio or video power save blocker respectively.
 917   void CreateAudioPowerSaveBlocker();
 918   void CreateVideoPowerSaveBlocker();
 919
 920   // Releases the audio power save blockers if |active_audio_players_| is empty.
 921   // Likewise, releases the video power save blockers if |active_video_players_|
 922   // is empty.
 923   void MaybeReleasePowerSaveBlockers();
 924
 925   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 926   gfx::Size GetSizeForNewRenderView();
 927
 928   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 929
 930   // Helper method that's called whenever |preferred_size_| or
 931   // |preferred_size_for_capture_| changes, to propagate the new value to the
 932   // |delegate_|.
 933   void OnPreferredSizeChanged(const gfx::Size& old_size);
 934
 935   // Helper methods for adding or removing player entries in |player_map| under
 936   // the key |render_frame_message_source_|.
 937   typedef std::vector<int64> PlayerList;
 938   typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
 939   void AddMediaPlayerEntry(int64 player_cookie,
 940                            ActiveMediaPlayerMap* player_map);
 941   void RemoveMediaPlayerEntry(int64 player_cookie,
 942                               ActiveMediaPlayerMap* player_map);
 943   // Removes all entries from |player_map| for |render_frame_host|.
 944   void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
 945                                    ActiveMediaPlayerMap* player_map);
 946
 947   // Data for core operation ---------------------------------------------------
 948
 949   // Delegate for notifying our owner about stuff. Not owned by us.
 950   WebContentsDelegate* delegate_;
 951
 952   // Handles the back/forward list and loading.
 953   NavigationControllerImpl controller_;
 954
 955   // The corresponding view.
 956   scoped_ptr<WebContentsView> view_;
 957
 958   // The view of the RVHD. Usually this is our WebContentsView implementation,
 959   // but if an embedder uses a different WebContentsView, they'll need to
 960   // provide this.
 961   RenderViewHostDelegateView* render_view_host_delegate_view_;
 962
 963   // Tracks created WebContentsImpl objects that have not been shown yet. They
 964   // are identified by the route ID passed to CreateNewWindow.
 965   typedef std::map<int, WebContentsImpl*> PendingContents;
 966   PendingContents pending_contents_;
 967
 968   // These maps hold on to the widgets that we created on behalf of the renderer
 969   // that haven't shown yet.
 970   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
 971   PendingWidgetViews pending_widget_views_;
 972
 973   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
 974   DestructionObservers destruction_observers_;
 975
 976   // A list of observers notified when page state changes. Weak references.
 977   // This MUST be listed above frame_tree_ since at destruction time the
 978   // latter might cause RenderViewHost's destructor to call us and we might use
 979   // the observer list then.
 980   ObserverList<WebContentsObserver> observers_;
 981
 982   // The tab that opened this tab, if any.  Will be set to null if the opener
 983   // is closed.
 984   WebContentsImpl* opener_;
 985
 986   // True if this tab was opened by another tab. This is not unset if the opener
 987   // is closed.
 988   bool created_with_opener_;
 989
 990 #if defined(OS_WIN)
 991   gfx::NativeViewAccessible accessible_parent_;
 992 #endif
 993
 994   // Helper classes ------------------------------------------------------------
 995
 996   // Tracking variables and associated power save blockers for media playback.
 997   ActiveMediaPlayerMap active_audio_players_;
 998   ActiveMediaPlayerMap active_video_players_;
 999   scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1000   scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1001
1002   // Manages the frame tree of the page and process swaps in each node.
1003   FrameTree frame_tree_;
1004
1005   // SavePackage, lazily created.
1006   scoped_refptr<SavePackage> save_package_;
1007
1008   // Data for loading state ----------------------------------------------------
1009
1010   // Indicates whether we're currently loading a resource.
1011   bool is_loading_;
1012
1013   // Indicates whether the current load is to a different document. Only valid
1014   // if is_loading_ is true.
1015   bool is_load_to_different_document_;
1016
1017   // Indicates if the tab is considered crashed.
1018   base::TerminationStatus crashed_status_;
1019   int crashed_error_code_;
1020
1021   // Whether this WebContents is waiting for a first-response for the
1022   // main resource of the page. This controls whether the throbber state is
1023   // "waiting" or "loading."
1024   bool waiting_for_response_;
1025
1026   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1027   // to a given tab and SiteInstance, and must be valid for the lifetime of the
1028   // WebContentsImpl.
1029   std::map<int32, int32> max_page_ids_;
1030
1031   // The current load state and the URL associated with it.
1032   net::LoadStateWithParam load_state_;
1033   base::string16 load_state_host_;
1034
1035   // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
1036   // frame's completion (from 0 to 1).
1037   typedef base::hash_map<int64, double> LoadingProgressMap;
1038   LoadingProgressMap loading_progresses_;
1039   double loading_total_progress_;
1040
1041   base::TimeTicks loading_last_progress_update_;
1042
1043   // Counter to track how many frames have sent start notifications but not
1044   // stop notifications.
1045   int loading_frames_in_progress_;
1046
1047   // Upload progress, for displaying in the status bar.
1048   // Set to zero when there is no significant upload happening.
1049   uint64 upload_size_;
1050   uint64 upload_position_;
1051
1052   // Data for current page -----------------------------------------------------
1053
1054   // When a title cannot be taken from any entry, this title will be used.
1055   base::string16 page_title_when_no_navigation_entry_;
1056
1057   // When a navigation occurs, we record its contents MIME type. It can be
1058   // used to check whether we can do something for some special contents.
1059   std::string contents_mime_type_;
1060
1061   // The last reported character encoding, not canonicalized.
1062   std::string last_reported_encoding_;
1063
1064   // The canonicalized character encoding.
1065   std::string canonical_encoding_;
1066
1067   // True if this is a secure page which displayed insecure content.
1068   bool displayed_insecure_content_;
1069
1070   // Whether the initial empty page has been accessed by another page, making it
1071   // unsafe to show the pending URL. Usually false unless another window tries
1072   // to modify the blank page.  Always false after the first commit.
1073   bool has_accessed_initial_document_;
1074
1075   // Data for misc internal state ----------------------------------------------
1076
1077   // When > 0, the WebContents is currently being captured (e.g., for
1078   // screenshots or mirroring); and the underlying RenderWidgetHost should not
1079   // be told it is hidden.
1080   int capturer_count_;
1081
1082   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1083   bool should_normally_be_visible_;
1084
1085   // See getter above.
1086   bool is_being_destroyed_;
1087
1088   // Indicates whether we should notify about disconnection of this
1089   // WebContentsImpl. This is used to ensure disconnection notifications only
1090   // happen if a connection notification has happened and that they happen only
1091   // once.
1092   bool notify_disconnection_;
1093
1094   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1095   // delegate of this WebContentsImpl is nulled before its destructor is called.
1096   JavaScriptDialogManager* dialog_manager_;
1097
1098   // Set to true when there is an active "before unload" dialog.  When true,
1099   // we've forced the throbber to start in Navigate, and we need to remember to
1100   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1101   bool is_showing_before_unload_dialog_;
1102
1103   // Settings that get passed to the renderer process.
1104   RendererPreferences renderer_preferences_;
1105
1106   // The time that this WebContents was last made active. The initial value is
1107   // the WebContents creation time.
1108   base::TimeTicks last_active_time_;
1109
1110   // See description above setter.
1111   bool closed_by_user_gesture_;
1112
1113   // Minimum/maximum zoom percent.
1114   int minimum_zoom_percent_;
1115   int maximum_zoom_percent_;
1116
1117   // The raw accumulated zoom value and the actual zoom increments made for an
1118   // an in-progress pinch gesture.
1119   float totalPinchGestureAmount_;
1120   int currentPinchZoomStepDelta_;
1121
1122   // The intrinsic size of the page.
1123   gfx::Size preferred_size_;
1124
1125   // The preferred size for content screen capture.  When |capturer_count_| > 0,
1126   // this overrides |preferred_size_|.
1127   gfx::Size preferred_size_for_capture_;
1128
1129 #if defined(OS_ANDROID)
1130   // Date time chooser opened by this tab.
1131   // Only used in Android since all other platforms use a multi field UI.
1132   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1133 #endif
1134
1135   // Holds information about a current color chooser dialog, if one is visible.
1136   struct ColorChooserInfo {
1137     ColorChooserInfo(int render_process_id,
1138                      int render_frame_id,
1139                      ColorChooser* chooser,
1140                      int identifier);
1141     ~ColorChooserInfo();
1142
1143     int render_process_id;
1144     int render_frame_id;
1145
1146     // Color chooser that was opened by this tab.
1147     scoped_ptr<ColorChooser> chooser;
1148
1149     // A unique identifier for the current color chooser.  Identifiers are
1150     // unique across a renderer process.  This avoids race conditions in
1151     // synchronizing the browser and renderer processes.  For example, if a
1152     // renderer closes one chooser and opens another, and simultaneously the
1153     // user picks a color in the first chooser, the IDs can be used to drop the
1154     // "chose a color" message rather than erroneously tell the renderer that
1155     // the user picked a color in the second chooser.
1156     int identifier;
1157   };
1158
1159   scoped_ptr<ColorChooserInfo> color_chooser_info_;
1160
1161   // Manages the embedder state for browser plugins, if this WebContents is an
1162   // embedder; NULL otherwise.
1163   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1164   // Manages the guest state for browser plugin, if this WebContents is a guest;
1165   // NULL otherwise.
1166   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1167
1168 #if defined(ENABLE_PLUGINS)
1169   // Manages the whitelist of plugin content origins exempt from power saving.
1170   scoped_ptr<PluginContentOriginWhitelist> plugin_content_origin_whitelist_;
1171 #endif
1172
1173   // This must be at the end, or else we might get notifications and use other
1174   // member variables that are gone.
1175   NotificationRegistrar registrar_;
1176
1177   // Used during IPC message dispatching from the RenderView/RenderFrame so that
1178   // the handlers can get a pointer to the RVH through which the message was
1179   // received.
1180   RenderViewHost* render_view_message_source_;
1181   RenderFrameHost* render_frame_message_source_;
1182
1183   // All live RenderWidgetHostImpls that are created by this object and may
1184   // outlive it.
1185   std::set<RenderWidgetHostImpl*> created_widgets_;
1186
1187   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1188   int fullscreen_widget_routing_id_;
1189
1190   // At the time the fullscreen widget was being shut down, did it have focus?
1191   // This is used to restore focus to the WebContentsView after both: 1) the
1192   // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1193   // completed making layout changes to effect an exit from fullscreen mode.
1194   bool fullscreen_widget_had_focus_at_shutdown_;
1195
1196   // Maps the ids of pending image downloads to their callbacks
1197   typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1198   ImageDownloadMap image_download_map_;
1199
1200   // Whether this WebContents is responsible for displaying a subframe in a
1201   // different process from its parent page.
1202   bool is_subframe_;
1203
1204   // Whether overscroll should be unconditionally disabled.
1205   bool force_disable_overscroll_content_;
1206
1207   // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1208   bool last_dialog_suppressed_;
1209
1210   scoped_ptr<GeolocationServiceContext> geolocation_service_context_;
1211
1212   scoped_ptr<ScreenOrientationDispatcherHost>
1213       screen_orientation_dispatcher_host_;
1214
1215   scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1216
1217   // The accessibility mode for all frames. This is queried when each frame
1218   // is created, and broadcast to all frames when it changes.
1219   AccessibilityMode accessibility_mode_;
1220
1221   // Monitors power levels for audio streams associated with this WebContents.
1222   AudioStreamMonitor audio_stream_monitor_;
1223
1224   // Created on-demand to mute all audio output from this WebContents.
1225   scoped_ptr<WebContentsAudioMuter> audio_muter_;
1226
1227   bool virtual_keyboard_requested_;
1228
1229   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1230
1231   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1232 };
1233
1234 // Dangerous methods which should never be made part of the public API, so we
1235 // grant their use only to an explicit friend list (c++ attorney/client idiom).
1236 class CONTENT_EXPORT WebContentsImpl::FriendZone {
1237  private:
1238   friend class TestNavigationObserver;
1239   friend class WebContentsAddedObserver;
1240   friend class ContentBrowserSanityChecker;
1241
1242   FriendZone();  // Not instantiable.
1243
1244   // Adds/removes a callback called on creation of each new WebContents.
1245   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
1246   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
1247
1248   DISALLOW_COPY_AND_ASSIGN(FriendZone);
1249 };
1250
1251 }  // namespace content
1252
1253 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_