// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_ #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_ #include #include #include #include "base/compiler_specific.h" #include "base/containers/scoped_ptr_hash_map.h" #include "base/gtest_prod_util.h" #include "base/memory/scoped_ptr.h" #include "base/observer_list.h" #include "base/process/process.h" #include "base/values.h" #include "content/browser/frame_host/frame_tree.h" #include "content/browser/frame_host/navigation_controller_delegate.h" #include "content/browser/frame_host/navigation_controller_impl.h" #include "content/browser/frame_host/navigator_delegate.h" #include "content/browser/frame_host/render_frame_host_delegate.h" #include "content/browser/frame_host/render_frame_host_manager.h" #include "content/browser/media/audio_stream_monitor.h" #include "content/browser/renderer_host/render_view_host_delegate.h" #include "content/browser/renderer_host/render_widget_host_delegate.h" #include "content/common/accessibility_mode_enums.h" #include "content/common/content_export.h" #include "content/public/browser/color_chooser.h" #include "content/public/browser/notification_observer.h" #include "content/public/browser/notification_registrar.h" #include "content/public/browser/web_contents.h" #include "content/public/common/renderer_preferences.h" #include "content/public/common/resource_type.h" #include "content/public/common/three_d_api_types.h" #include "net/base/load_states.h" #include "net/http/http_response_headers.h" #include "third_party/WebKit/public/web/WebDragOperation.h" #include "ui/base/page_transition_types.h" #include "ui/gfx/rect_f.h" #include "ui/gfx/size.h" struct BrowserPluginHostMsg_ResizeGuest_Params; struct ViewHostMsg_DateTimeDialogValue_Params; struct ViewMsg_PostMessage_Params; namespace content { class BrowserPluginEmbedder; class BrowserPluginGuest; class BrowserPluginGuestManager; class DateTimeChooserAndroid; class DownloadItem; class GeolocationDispatcherHost; class InterstitialPageImpl; class JavaScriptDialogManager; class ManifestManagerHost; class MidiDispatcherHost; class PowerSaveBlocker; class RenderViewHost; class RenderViewHostDelegateView; class RenderViewHostImpl; class RenderWidgetHostImpl; class SavePackage; class ScreenOrientationDispatcherHost; class SiteInstance; class TestWebContents; class WebContentsAudioMuter; class WebContentsDelegate; class WebContentsImpl; class WebContentsObserver; class WebContentsView; class WebContentsViewDelegate; struct AXEventNotificationDetails; struct ColorSuggestion; struct FaviconURL; struct LoadNotificationDetails; struct ResourceRedirectDetails; struct ResourceRequestDetails; #if defined(OS_ANDROID) class WebContentsAndroid; #endif // Factory function for the implementations that content knows about. Takes // ownership of |delegate|. WebContentsView* CreateWebContentsView( WebContentsImpl* web_contents, WebContentsViewDelegate* delegate, RenderViewHostDelegateView** render_view_host_delegate_view); class CONTENT_EXPORT WebContentsImpl : public NON_EXPORTED_BASE(WebContents), public NON_EXPORTED_BASE(RenderFrameHostDelegate), public RenderViewHostDelegate, public RenderWidgetHostDelegate, public RenderFrameHostManager::Delegate, public NotificationObserver, public NON_EXPORTED_BASE(NavigationControllerDelegate), public NON_EXPORTED_BASE(NavigatorDelegate) { public: virtual ~WebContentsImpl(); static WebContentsImpl* CreateWithOpener( const WebContents::CreateParams& params, WebContentsImpl* opener); static std::vector GetAllWebContents(); // Returns the opener WebContentsImpl, if any. This can be set to null if the // opener is closed or the page clears its window.opener. WebContentsImpl* opener() const { return opener_; } // Creates a swapped out RenderView. This is used by the browser plugin to // create a swapped out RenderView in the embedder render process for the // guest, to expose the guest's window object to the embedder. // This returns the routing ID of the newly created swapped out RenderView. int CreateSwappedOutRenderView(SiteInstance* instance); // Complex initialization here. Specifically needed to avoid having // members call back into our virtual functions in the constructor. virtual void Init(const WebContents::CreateParams& params); // Returns the SavePackage which manages the page saving job. May be NULL. SavePackage* save_package() const { return save_package_.get(); } #if defined(OS_ANDROID) // In Android WebView, the RenderView needs created even there is no // navigation entry, this allows Android WebViews to use // javascript: URLs that load into the DOMWindow before the first page // load. This is not safe to do in any context that a web page could get a // reference to the DOMWindow before the first page load. bool CreateRenderViewForInitialEmptyDocument(); #endif // Expose the render manager for testing. // TODO(creis): Remove this now that we can get to it via FrameTreeNode. RenderFrameHostManager* GetRenderManagerForTesting(); // Returns guest browser plugin object, or NULL if this WebContents is not a // guest. BrowserPluginGuest* GetBrowserPluginGuest() const; // Sets a BrowserPluginGuest object for this WebContents. If this WebContents // has a BrowserPluginGuest then that implies that it is being hosted by // a BrowserPlugin object in an embedder renderer process. void SetBrowserPluginGuest(BrowserPluginGuest* guest); // Returns embedder browser plugin object, or NULL if this WebContents is not // an embedder. BrowserPluginEmbedder* GetBrowserPluginEmbedder() const; // Gets the current fullscreen render widget's routing ID. Returns // MSG_ROUTING_NONE when there is no fullscreen render widget. int GetFullscreenWidgetRoutingID() const; // Invoked when visible SSL state (as defined by SSLStatus) changes. void DidChangeVisibleSSLState(); // Informs the render view host and the BrowserPluginEmbedder, if present, of // a Drag Source End. void DragSourceEndedAt(int client_x, int client_y, int screen_x, int screen_y, blink::WebDragOperation operation); // A response has been received for a resource request. void DidGetResourceResponseStart( const ResourceRequestDetails& details); // A redirect was received while requesting a resource. void DidGetRedirectForResourceRequest( RenderViewHost* render_view_host, const ResourceRedirectDetails& details); WebContentsView* GetView() const; GeolocationDispatcherHost* geolocation_dispatcher_host() { return geolocation_dispatcher_host_.get(); } ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() { return screen_orientation_dispatcher_host_.get(); } bool should_normally_be_visible() { return should_normally_be_visible_; } // Broadcasts the mode change to all frames. void SetAccessibilityMode(AccessibilityMode mode); // Adds the given accessibility mode to the current accessibility mode // bitmap. void AddAccessibilityMode(AccessibilityMode mode); // Removes the given accessibility mode from the current accessibility // mode bitmap, managing the bits that are shared with other modes such // that a bit will only be turned off when all modes that depend on it // have been removed. void RemoveAccessibilityMode(AccessibilityMode mode); // WebContents ------------------------------------------------------ virtual WebContentsDelegate* GetDelegate() OVERRIDE; virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE; virtual NavigationControllerImpl& GetController() OVERRIDE; virtual const NavigationControllerImpl& GetController() const OVERRIDE; virtual BrowserContext* GetBrowserContext() const OVERRIDE; virtual const GURL& GetURL() const OVERRIDE; virtual const GURL& GetVisibleURL() const OVERRIDE; virtual const GURL& GetLastCommittedURL() const OVERRIDE; virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE; virtual RenderFrameHost* GetMainFrame() OVERRIDE; virtual RenderFrameHost* GetFocusedFrame() OVERRIDE; virtual void ForEachFrame( const base::Callback& on_frame) OVERRIDE; virtual void SendToAllFrames(IPC::Message* message) OVERRIDE; virtual RenderViewHost* GetRenderViewHost() const OVERRIDE; virtual int GetRoutingID() const OVERRIDE; virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE; virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const OVERRIDE; virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE; virtual WebUI* GetWebUI() const OVERRIDE; virtual WebUI* GetCommittedWebUI() const OVERRIDE; virtual void SetUserAgentOverride(const std::string& override) OVERRIDE; virtual const std::string& GetUserAgentOverride() const OVERRIDE; virtual void EnableTreeOnlyAccessibilityMode() OVERRIDE; virtual bool IsTreeOnlyAccessibilityModeForTesting() const OVERRIDE; virtual bool IsFullAccessibilityModeForTesting() const OVERRIDE; #if defined(OS_WIN) virtual void SetParentNativeViewAccessible( gfx::NativeViewAccessible accessible_parent) OVERRIDE; #endif virtual const base::string16& GetTitle() const OVERRIDE; virtual int32 GetMaxPageID() OVERRIDE; virtual int32 GetMaxPageIDForSiteInstance( SiteInstance* site_instance) OVERRIDE; virtual SiteInstance* GetSiteInstance() const OVERRIDE; virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE; virtual bool IsLoading() const OVERRIDE; virtual bool IsLoadingToDifferentDocument() const OVERRIDE; virtual bool IsWaitingForResponse() const OVERRIDE; virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE; virtual const base::string16& GetLoadStateHost() const OVERRIDE; virtual uint64 GetUploadSize() const OVERRIDE; virtual uint64 GetUploadPosition() const OVERRIDE; virtual std::set GetSitesInTab() const OVERRIDE; virtual const std::string& GetEncoding() const OVERRIDE; virtual bool DisplayedInsecureContent() const OVERRIDE; virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE; virtual void DecrementCapturerCount() OVERRIDE; virtual int GetCapturerCount() const OVERRIDE; virtual bool IsAudioMuted() const OVERRIDE; virtual void SetAudioMuted(bool mute) OVERRIDE; virtual bool IsCrashed() const OVERRIDE; virtual void SetIsCrashed(base::TerminationStatus status, int error_code) OVERRIDE; virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE; virtual bool IsBeingDestroyed() const OVERRIDE; virtual void NotifyNavigationStateChanged( InvalidateTypes changed_flags) OVERRIDE; virtual base::TimeTicks GetLastActiveTime() const OVERRIDE; virtual void WasShown() OVERRIDE; virtual void WasHidden() OVERRIDE; virtual bool NeedToFireBeforeUnload() OVERRIDE; virtual void DispatchBeforeUnload(bool for_cross_site_transition) OVERRIDE; virtual void Stop() OVERRIDE; virtual WebContents* Clone() OVERRIDE; virtual void ReloadFocusedFrame(bool ignore_cache) OVERRIDE; virtual void Undo() OVERRIDE; virtual void Redo() OVERRIDE; virtual void Cut() OVERRIDE; virtual void Copy() OVERRIDE; virtual void CopyToFindPboard() OVERRIDE; virtual void Paste() OVERRIDE; virtual void PasteAndMatchStyle() OVERRIDE; virtual void Delete() OVERRIDE; virtual void SelectAll() OVERRIDE; virtual void Unselect() OVERRIDE; virtual void Replace(const base::string16& word) OVERRIDE; virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE; virtual void NotifyContextMenuClosed( const CustomContextMenuContext& context) OVERRIDE; virtual void ExecuteCustomContextMenuCommand( int action, const CustomContextMenuContext& context) OVERRIDE; virtual gfx::NativeView GetNativeView() OVERRIDE; virtual gfx::NativeView GetContentNativeView() OVERRIDE; virtual gfx::NativeWindow GetTopLevelNativeWindow() OVERRIDE; virtual gfx::Rect GetContainerBounds() OVERRIDE; virtual gfx::Rect GetViewBounds() OVERRIDE; virtual DropData* GetDropData() OVERRIDE; virtual void Focus() OVERRIDE; virtual void SetInitialFocus() OVERRIDE; virtual void StoreFocus() OVERRIDE; virtual void RestoreFocus() OVERRIDE; virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE; virtual bool ShowingInterstitialPage() const OVERRIDE; virtual InterstitialPage* GetInterstitialPage() const OVERRIDE; virtual bool IsSavable() OVERRIDE; virtual void OnSavePage() OVERRIDE; virtual bool SavePage(const base::FilePath& main_file, const base::FilePath& dir_path, SavePageType save_type) OVERRIDE; virtual void SaveFrame(const GURL& url, const Referrer& referrer) OVERRIDE; virtual void GenerateMHTML( const base::FilePath& file, const base::Callback& callback) OVERRIDE; virtual const std::string& GetContentsMimeType() const OVERRIDE; virtual bool WillNotifyDisconnection() const OVERRIDE; virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE; virtual void ResetOverrideEncoding() OVERRIDE; virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE; virtual void Close() OVERRIDE; virtual void SystemDragEnded() OVERRIDE; virtual void UserGestureDone() OVERRIDE; virtual void SetClosedByUserGesture(bool value) OVERRIDE; virtual bool GetClosedByUserGesture() const OVERRIDE; virtual void ViewSource() OVERRIDE; virtual void ViewFrameSource(const GURL& url, const PageState& page_state) OVERRIDE; virtual int GetMinimumZoomPercent() const OVERRIDE; virtual int GetMaximumZoomPercent() const OVERRIDE; virtual gfx::Size GetPreferredSize() const OVERRIDE; virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE; virtual bool HasOpener() const OVERRIDE; virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE; virtual void DidEndColorChooser() OVERRIDE; virtual int DownloadImage(const GURL& url, bool is_favicon, uint32_t max_bitmap_size, const ImageDownloadCallback& callback) OVERRIDE; virtual bool IsSubframe() const OVERRIDE; virtual void Find(int request_id, const base::string16& search_text, const blink::WebFindOptions& options) OVERRIDE; virtual void StopFinding(StopFindAction action) OVERRIDE; virtual void InsertCSS(const std::string& css) OVERRIDE; virtual bool WasRecentlyAudible() OVERRIDE; virtual void GetManifest(const GetManifestCallback&) OVERRIDE; #if defined(OS_ANDROID) virtual base::android::ScopedJavaLocalRef GetJavaWebContents() OVERRIDE; virtual WebContentsAndroid* GetWebContentsAndroid(); #elif defined(OS_MACOSX) virtual void SetAllowOtherViews(bool allow) OVERRIDE; virtual bool GetAllowOtherViews() OVERRIDE; #endif // Implementation of PageNavigator. virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE; // Implementation of IPC::Sender. virtual bool Send(IPC::Message* message) OVERRIDE; // RenderFrameHostDelegate --------------------------------------------------- virtual bool OnMessageReceived(RenderFrameHost* render_frame_host, const IPC::Message& message) OVERRIDE; virtual const GURL& GetMainFrameLastCommittedURL() const OVERRIDE; virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE; virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE; virtual void DidStartLoading(RenderFrameHost* render_frame_host, bool to_different_document) OVERRIDE; virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE; virtual void DidDeferAfterResponseStarted( const TransitionLayerData& transition_data) OVERRIDE; virtual bool WillHandleDeferAfterResponseStarted() OVERRIDE; virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE; virtual void ShowContextMenu(RenderFrameHost* render_frame_host, const ContextMenuParams& params) OVERRIDE; virtual void RunJavaScriptMessage(RenderFrameHost* render_frame_host, const base::string16& message, const base::string16& default_prompt, const GURL& frame_url, JavaScriptMessageType type, IPC::Message* reply_msg) OVERRIDE; virtual void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host, const base::string16& message, bool is_reload, IPC::Message* reply_msg) OVERRIDE; virtual void DidAccessInitialDocument() OVERRIDE; virtual void DidDisownOpener(RenderFrameHost* render_frame_host) OVERRIDE; virtual void DocumentOnLoadCompleted( RenderFrameHost* render_frame_host) OVERRIDE; virtual void UpdateTitle(RenderFrameHost* render_frame_host, int32 page_id, const base::string16& title, base::i18n::TextDirection title_direction) OVERRIDE; virtual void UpdateEncoding(RenderFrameHost* render_frame_host, const std::string& encoding) OVERRIDE; virtual WebContents* GetAsWebContents() OVERRIDE; virtual bool IsNeverVisible() OVERRIDE; virtual AccessibilityMode GetAccessibilityMode() const OVERRIDE; virtual void AccessibilityEventReceived( const std::vector& details) OVERRIDE; virtual RenderFrameHost* GetGuestByInstanceID(int browser_plugin_instance_id) OVERRIDE; #if defined(OS_WIN) virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE; #endif // RenderViewHostDelegate ---------------------------------------------------- virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE; virtual bool OnMessageReceived(RenderViewHost* render_view_host, const IPC::Message& message) OVERRIDE; // RenderFrameHostDelegate has the same method, so list it there because this // interface is going away. // virtual WebContents* GetAsWebContents() OVERRIDE; virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE; virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE; virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE; virtual void RenderViewTerminated(RenderViewHost* render_view_host, base::TerminationStatus status, int error_code) OVERRIDE; virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE; virtual void UpdateState(RenderViewHost* render_view_host, int32 page_id, const PageState& page_state) OVERRIDE; virtual void UpdateTargetURL(const GURL& url) OVERRIDE; virtual void Close(RenderViewHost* render_view_host) OVERRIDE; virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE; virtual void DidCancelLoading() OVERRIDE; virtual void DocumentAvailableInMainFrame( RenderViewHost* render_view_host) OVERRIDE; virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE; virtual void RouteMessageEvent( RenderViewHost* rvh, const ViewMsg_PostMessage_Params& params) OVERRIDE; virtual bool AddMessageToConsole(int32 level, const base::string16& message, int32 line_no, const base::string16& source_id) OVERRIDE; virtual RendererPreferences GetRendererPrefs( BrowserContext* browser_context) const OVERRIDE; virtual WebPreferences ComputeWebkitPrefs() OVERRIDE; virtual void OnUserGesture() OVERRIDE; virtual void OnIgnoredUIEvent() OVERRIDE; virtual void RendererUnresponsive(RenderViewHost* render_view_host, bool is_during_beforeunload, bool is_during_unload) OVERRIDE; virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE; virtual void LoadStateChanged(const GURL& url, const net::LoadStateWithParam& load_state, uint64 upload_position, uint64 upload_size) OVERRIDE; virtual void Activate() OVERRIDE; virtual void Deactivate() OVERRIDE; virtual void LostCapture() OVERRIDE; virtual void HandleMouseDown() OVERRIDE; virtual void HandleMouseUp() OVERRIDE; virtual void HandlePointerActivate() OVERRIDE; virtual void HandleGestureBegin() OVERRIDE; virtual void HandleGestureEnd() OVERRIDE; virtual void RunFileChooser( RenderViewHost* render_view_host, const FileChooserParams& params) OVERRIDE; virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE; virtual bool IsFullscreenForCurrentTab() const OVERRIDE; virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE; virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE; virtual void RequestToLockMouse(bool user_gesture, bool last_unlocked_by_target) OVERRIDE; virtual void LostMouseLock() OVERRIDE; virtual void CreateNewWindow( int render_process_id, int route_id, int main_frame_route_id, const ViewHostMsg_CreateWindow_Params& params, SessionStorageNamespace* session_storage_namespace) OVERRIDE; virtual void CreateNewWidget(int render_process_id, int route_id, blink::WebPopupType popup_type) OVERRIDE; virtual void CreateNewFullscreenWidget(int render_process_id, int route_id) OVERRIDE; virtual void ShowCreatedWindow(int route_id, WindowOpenDisposition disposition, const gfx::Rect& initial_pos, bool user_gesture) OVERRIDE; virtual void ShowCreatedWidget(int route_id, const gfx::Rect& initial_pos) OVERRIDE; virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE; virtual void RequestMediaAccessPermission( const MediaStreamRequest& request, const MediaResponseCallback& callback) OVERRIDE; virtual bool CheckMediaAccessPermission(const GURL& security_origin, MediaStreamType type) OVERRIDE; virtual SessionStorageNamespace* GetSessionStorageNamespace( SiteInstance* instance) OVERRIDE; virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap() OVERRIDE; virtual FrameTree* GetFrameTree() OVERRIDE; virtual void SetIsVirtualKeyboardRequested(bool requested) OVERRIDE; virtual bool IsVirtualKeyboardRequested() OVERRIDE; // NavigatorDelegate --------------------------------------------------------- virtual void DidStartProvisionalLoad( RenderFrameHostImpl* render_frame_host, const GURL& validated_url, bool is_error_page, bool is_iframe_srcdoc) OVERRIDE; virtual void DidStartNavigationTransition( RenderFrameHostImpl* render_frame_host) OVERRIDE; virtual void DidFailProvisionalLoadWithError( RenderFrameHostImpl* render_frame_host, const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) OVERRIDE; virtual void DidFailLoadWithError( RenderFrameHostImpl* render_frame_host, const GURL& url, int error_code, const base::string16& error_description) OVERRIDE; virtual void DidCommitProvisionalLoad( RenderFrameHostImpl* render_frame_host, const GURL& url, ui::PageTransition transition_type) OVERRIDE; virtual void DidNavigateMainFramePreCommit( bool navigation_is_within_page) OVERRIDE; virtual void DidNavigateMainFramePostCommit( const LoadCommittedDetails& details, const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE; virtual void DidNavigateAnyFramePostCommit( RenderFrameHostImpl* render_frame_host, const LoadCommittedDetails& details, const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE; virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE; virtual bool CanOverscrollContent() const OVERRIDE; virtual void NotifyChangedNavigationState( InvalidateTypes changed_flags) OVERRIDE; virtual void AboutToNavigateRenderFrame( RenderFrameHostImpl* render_frame_host) OVERRIDE; virtual void DidStartNavigationToPendingEntry( RenderFrameHostImpl* render_frame_host, const GURL& url, NavigationController::ReloadType reload_type) OVERRIDE; virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host, const OpenURLParams& params) OVERRIDE; virtual bool ShouldPreserveAbortedURLs() OVERRIDE; // RenderWidgetHostDelegate -------------------------------------------------- virtual void RenderWidgetDeleted( RenderWidgetHostImpl* render_widget_host) OVERRIDE; virtual bool PreHandleKeyboardEvent( const NativeWebKeyboardEvent& event, bool* is_keyboard_shortcut) OVERRIDE; virtual void HandleKeyboardEvent( const NativeWebKeyboardEvent& event) OVERRIDE; virtual bool HandleWheelEvent( const blink::WebMouseWheelEvent& event) OVERRIDE; virtual bool PreHandleGestureEvent( const blink::WebGestureEvent& event) OVERRIDE; virtual bool HandleGestureEvent( const blink::WebGestureEvent& event) OVERRIDE; virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE; virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() OVERRIDE; virtual BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager() OVERRIDE; // RenderFrameHostManager::Delegate ------------------------------------------ virtual bool CreateRenderViewForRenderManager( RenderViewHost* render_view_host, int opener_route_id, int proxy_routing_id, bool for_main_frame_navigation) OVERRIDE; virtual bool CreateRenderFrameForRenderManager( RenderFrameHost* render_frame_host, int parent_routing_id) OVERRIDE; virtual void BeforeUnloadFiredFromRenderManager( bool proceed, const base::TimeTicks& proceed_time, bool* proceed_to_fire_unload) OVERRIDE; virtual void RenderProcessGoneFromRenderManager( RenderViewHost* render_view_host) OVERRIDE; virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE; virtual void CancelModalDialogsForRenderManager() OVERRIDE; virtual void NotifySwappedFromRenderManager(RenderFrameHost* old_host, RenderFrameHost* new_host, bool is_main_frame) OVERRIDE; virtual int CreateOpenerRenderViewsForRenderManager( SiteInstance* instance) OVERRIDE; virtual NavigationControllerImpl& GetControllerForRenderManager() OVERRIDE; virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE; virtual NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() OVERRIDE; virtual bool FocusLocationBarByDefault() OVERRIDE; virtual void SetFocusToLocationBar(bool select_all) OVERRIDE; virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE; virtual bool IsHidden() OVERRIDE; // NotificationObserver ------------------------------------------------------ virtual void Observe(int type, const NotificationSource& source, const NotificationDetails& details) OVERRIDE; // NavigationControllerDelegate ---------------------------------------------- virtual WebContents* GetWebContents() OVERRIDE; virtual void NotifyNavigationEntryCommitted( const LoadCommittedDetails& load_details) OVERRIDE; // Invoked before a form repost warning is shown. virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE; // Activate this WebContents and show a form repost warning. virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE; // Whether the initial empty page of this view has been accessed by another // page, making it unsafe to show the pending URL. Always false after the // first commit. virtual bool HasAccessedInitialDocument() OVERRIDE; // Updates the max page ID for the current SiteInstance in this // WebContentsImpl to be at least |page_id|. virtual void UpdateMaxPageID(int32 page_id) OVERRIDE; // Updates the max page ID for the given SiteInstance in this WebContentsImpl // to be at least |page_id|. virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance, int32 page_id) OVERRIDE; // Copy the current map of SiteInstance ID to max page ID from another tab. // This is necessary when this tab adopts the NavigationEntries from // |web_contents|. virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE; // Called by the NavigationController to cause the WebContentsImpl to navigate // to the current pending entry. The NavigationController should be called // back with RendererDidNavigate on success or DiscardPendingEntry on failure. // The callbacks can be inside of this function, or at some future time. // // The entry has a PageID of -1 if newly created (corresponding to navigation // to a new URL). // // If this method returns false, then the navigation is discarded (equivalent // to calling DiscardPendingEntry on the NavigationController). virtual bool NavigateToPendingEntry( NavigationController::ReloadType reload_type) OVERRIDE; // Sets the history for this WebContentsImpl to |history_length| entries, and // moves the current page_id to the last entry in the list if it's valid. // This is mainly used when a prerendered page is swapped into the current // tab. The method is virtual for testing. virtual void SetHistoryLengthAndPrune( const SiteInstance* site_instance, int merge_history_length, int32 minimum_page_id) OVERRIDE; // Called by InterstitialPageImpl when it creates a RenderFrameHost. virtual void RenderFrameForInterstitialPageCreated( RenderFrameHost* render_frame_host) OVERRIDE; // Sets the passed interstitial as the currently showing interstitial. // No interstitial page should already be attached. virtual void AttachInterstitialPage( InterstitialPageImpl* interstitial_page) OVERRIDE; // Unsets the currently showing interstitial. virtual void DetachInterstitialPage() OVERRIDE; // Changes the IsLoading state and notifies the delegate as needed. // |details| is used to provide details on the load that just finished // (but can be null if not applicable). virtual void SetIsLoading(RenderViewHost* render_view_host, bool is_loading, bool to_different_document, LoadNotificationDetails* details) OVERRIDE; typedef base::Callback CreatedCallback; // Requests the renderer to select the region between two points in the // currently focused frame. void SelectRange(const gfx::Point& start, const gfx::Point& end); // Notifies the main frame that it can continue navigation (if it was deferred // immediately at first response). void ResumeResponseDeferredAtStart(); // Forces overscroll to be disabled (used by touch emulation). void SetForceDisableOverscrollContent(bool force_disable); AudioStreamMonitor* audio_stream_monitor() { return &audio_stream_monitor_; } bool has_audio_power_save_blocker_for_testing() const { return audio_power_save_blocker_; } bool has_video_power_save_blocker_for_testing() const { return video_power_save_blocker_; } private: friend class TestNavigationObserver; friend class WebContentsAddedObserver; friend class WebContentsObserver; friend class WebContents; // To implement factory methods. FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, CrossSiteCantPreemptAfterUnload); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape); FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime); FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles); FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate); FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload); FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe); FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest, CrossSiteIframeAccessibility); // So InterstitialPageImpl can access SetIsLoading. friend class InterstitialPageImpl; // TODO(brettw) TestWebContents shouldn't exist! friend class TestWebContents; class DestructionObserver; // See WebContents::Create for a description of these parameters. WebContentsImpl(BrowserContext* browser_context, WebContentsImpl* opener); // Add and remove observers for page navigation notifications. The order in // which notifications are sent to observers is undefined. Clients must be // sure to remove the observer before they go away. void AddObserver(WebContentsObserver* observer); void RemoveObserver(WebContentsObserver* observer); // Clears this tab's opener if it has been closed. void OnWebContentsDestroyed(WebContentsImpl* web_contents); // Creates and adds to the map a destruction observer watching |web_contents|. // No-op if such an observer already exists. void AddDestructionObserver(WebContentsImpl* web_contents); // Deletes and removes from the map a destruction observer // watching |web_contents|. No-op if there is no such observer. void RemoveDestructionObserver(WebContentsImpl* web_contents); // Traverses all the RenderFrameHosts in the FrameTree and creates a set // all the unique RenderWidgetHostViews. std::set GetRenderWidgetHostViewsInTree(); // Callback function when showing JavaScript dialogs. Takes in a routing ID // pair to identify the RenderFrameHost that opened the dialog, because it's // possible for the RenderFrameHost to be deleted by the time this is called. void OnDialogClosed(int render_process_id, int render_frame_id, IPC::Message* reply_msg, bool dialog_was_suppressed, bool success, const base::string16& user_input); // Callback function when requesting permission to access the PPAPI broker. // |result| is true if permission was granted. void OnPpapiBrokerPermissionResult(int routing_id, bool result); bool OnMessageReceived(RenderViewHost* render_view_host, RenderFrameHost* render_frame_host, const IPC::Message& message); // IPC message handlers. void OnThemeColorChanged(SkColor theme_color); void OnDidLoadResourceFromMemoryCache(const GURL& url, const std::string& security_info, const std::string& http_request, const std::string& mime_type, ResourceType resource_type); void OnDidDisplayInsecureContent(); void OnDidRunInsecureContent(const std::string& security_origin, const GURL& target_url); void OnDocumentLoadedInFrame(); void OnDidFinishLoad(const GURL& url); void OnDidStartLoading(bool to_different_document); void OnDidStopLoading(); void OnDidChangeLoadProgress(double load_progress); void OnGoToEntryAtOffset(int offset); void OnUpdateZoomLimits(int minimum_percent, int maximum_percent); void OnEnumerateDirectory(int request_id, const base::FilePath& path); void OnRegisterProtocolHandler(const std::string& protocol, const GURL& url, const base::string16& title, bool user_gesture); void OnUnregisterProtocolHandler(const std::string& protocol, const GURL& url, bool user_gesture); void OnFindReply(int request_id, int number_of_matches, const gfx::Rect& selection_rect, int active_match_ordinal, bool final_update); #if defined(OS_ANDROID) void OnFindMatchRectsReply(int version, const std::vector& rects, const gfx::RectF& active_rect); void OnOpenDateTimeDialog( const ViewHostMsg_DateTimeDialogValue_Params& value); #endif void OnPepperPluginHung(int plugin_child_id, const base::FilePath& path, bool is_hung); void OnPluginCrashed(const base::FilePath& plugin_path, base::ProcessId plugin_pid); void OnDomOperationResponse(const std::string& json_string, int automation_id); void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy); void OnOpenColorChooser(int color_chooser_id, SkColor color, const std::vector& suggestions); void OnEndColorChooser(int color_chooser_id); void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color); void OnWebUISend(const GURL& source_url, const std::string& name, const base::ListValue& args); void OnRequestPpapiBrokerPermission(int routing_id, const GURL& url, const base::FilePath& plugin_path); void OnBrowserPluginMessage(const IPC::Message& message); void OnDidDownloadImage(int id, int http_status_code, const GURL& image_url, const std::vector& bitmaps, const std::vector& original_bitmap_sizes); void OnUpdateFaviconURL(const std::vector& candidates); void OnFirstVisuallyNonEmptyPaint(); void OnMediaPlayingNotification(int64 player_cookie, bool has_video, bool has_audio, bool is_remote); void OnMediaPausedNotification(int64 player_cookie); void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view, const base::string16& main_text, const base::string16& sub_text); void OnHideValidationMessage(); void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view); // Called by derived classes to indicate that we're no longer waiting for a // response. This won't actually update the throbber, but it will get picked // up at the next animation step if the throbber is going. void SetNotWaitingForResponse() { waiting_for_response_ = false; } // Navigation helpers -------------------------------------------------------- // // These functions are helpers for Navigate() and DidNavigate(). // Handles post-navigation tasks in DidNavigate AFTER the entry has been // committed to the navigation controller. Note that the navigation entry is // not provided since it may be invalid/changed after being committed. The // current navigation entry is in the NavigationController at this point. // If our controller was restored, update the max page ID associated with the // given RenderViewHost to be larger than the number of restored entries. // This is called in CreateRenderView before any navigations in the RenderView // have begun, to prevent any races in updating RenderView::next_page_id. void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh); // Saves the given title to the navigation entry and does associated work. It // will update history and the view for the new title, and also synthesize // titles for file URLs that have none (so we require that the URL of the // entry already be set). // // This is used as the backend for state updates, which include a new title, // or the dedicated set title message. It returns true if the new title is // different and was therefore updated. bool UpdateTitleForEntry(NavigationEntryImpl* entry, const base::string16& title); // Recursively creates swapped out RenderViews for this tab's opener chain // (including this tab) in the given SiteInstance, allowing other tabs to send // cross-process JavaScript calls to their opener(s). Returns the route ID of // this tab's RenderView for |instance|. int CreateOpenerRenderViews(SiteInstance* instance); // Helper for CreateNewWidget/CreateNewFullscreenWidget. void CreateNewWidget(int render_process_id, int route_id, bool is_fullscreen, blink::WebPopupType popup_type); // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget. void ShowCreatedWidget(int route_id, bool is_fullscreen, const gfx::Rect& initial_pos); // Finds the new RenderWidgetHost and returns it. Note that this can only be // called once as this call also removes it from the internal map. RenderWidgetHostView* GetCreatedWidget(int route_id); // Finds the new WebContentsImpl by route_id, initializes it for // renderer-initiated creation, and returns it. Note that this can only be // called once as this call also removes it from the internal map. WebContentsImpl* GetCreatedWindow(int route_id); // Tracking loading progress ------------------------------------------------- // Resets the tracking state of the current load. void ResetLoadProgressState(); // Calculates the progress of the current load and notifies the delegate. void SendLoadProgressChanged(); // Called once when the last frame on the page has stopped loading. void DidStopLoading(RenderFrameHost* render_frame_host); // Misc non-view stuff ------------------------------------------------------- // Helper functions for sending notifications. void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host); void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host); void NotifyDisconnected(); void SetEncoding(const std::string& encoding); // TODO(creis): This should take in a FrameTreeNode to know which node's // render manager to return. For now, we just return the root's. RenderFrameHostManager* GetRenderManager() const; RenderViewHostImpl* GetRenderViewHostImpl(); // Removes browser plugin embedder if there is one. void RemoveBrowserPluginEmbedder(); // Clear |render_frame_host|'s tracking entry for its power save blockers. void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host); // Clear tracking entries for all RenderFrameHosts, clears // |audio_power_save_blocker_| and |video_power_save_blocker_|. void ClearAllPowerSaveBlockers(); // Creates an audio or video power save blocker respectively. void CreateAudioPowerSaveBlocker(); void CreateVideoPowerSaveBlocker(); // Releases the audio power save blockers if |active_audio_players_| is empty. // Likewise, releases the video power save blockers if |active_video_players_| // is empty. void MaybeReleasePowerSaveBlockers(); // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView(). gfx::Size GetSizeForNewRenderView(); void OnFrameRemoved(RenderFrameHost* render_frame_host); // Helper method that's called whenever |preferred_size_| or // |preferred_size_for_capture_| changes, to propagate the new value to the // |delegate_|. void OnPreferredSizeChanged(const gfx::Size& old_size); // Helper methods for adding or removing player entries in |player_map| under // the key |render_frame_message_source_|. typedef std::vector PlayerList; typedef std::map ActiveMediaPlayerMap; void AddMediaPlayerEntry(int64 player_cookie, ActiveMediaPlayerMap* player_map); void RemoveMediaPlayerEntry(int64 player_cookie, ActiveMediaPlayerMap* player_map); // Removes all entries from |player_map| for |render_frame_host|. void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host, ActiveMediaPlayerMap* player_map); // Adds/removes a callback called on creation of each new WebContents. // Deprecated, about to remove. static void AddCreatedCallback(const CreatedCallback& callback); static void RemoveCreatedCallback(const CreatedCallback& callback); // Data for core operation --------------------------------------------------- // Delegate for notifying our owner about stuff. Not owned by us. WebContentsDelegate* delegate_; // Handles the back/forward list and loading. NavigationControllerImpl controller_; // The corresponding view. scoped_ptr view_; // The view of the RVHD. Usually this is our WebContentsView implementation, // but if an embedder uses a different WebContentsView, they'll need to // provide this. RenderViewHostDelegateView* render_view_host_delegate_view_; // Tracks created WebContentsImpl objects that have not been shown yet. They // are identified by the route ID passed to CreateNewWindow. typedef std::map PendingContents; PendingContents pending_contents_; // These maps hold on to the widgets that we created on behalf of the renderer // that haven't shown yet. typedef std::map PendingWidgetViews; PendingWidgetViews pending_widget_views_; typedef std::map DestructionObservers; DestructionObservers destruction_observers_; // A list of observers notified when page state changes. Weak references. // This MUST be listed above frame_tree_ since at destruction time the // latter might cause RenderViewHost's destructor to call us and we might use // the observer list then. ObserverList observers_; // The tab that opened this tab, if any. Will be set to null if the opener // is closed. WebContentsImpl* opener_; // True if this tab was opened by another tab. This is not unset if the opener // is closed. bool created_with_opener_; #if defined(OS_WIN) gfx::NativeViewAccessible accessible_parent_; #endif // Helper classes ------------------------------------------------------------ // Tracking variables and associated power save blockers for media playback. ActiveMediaPlayerMap active_audio_players_; ActiveMediaPlayerMap active_video_players_; scoped_ptr audio_power_save_blocker_; scoped_ptr video_power_save_blocker_; // Manages the frame tree of the page and process swaps in each node. FrameTree frame_tree_; // SavePackage, lazily created. scoped_refptr save_package_; // Data for loading state ---------------------------------------------------- // Indicates whether we're currently loading a resource. bool is_loading_; // Indicates whether the current load is to a different document. Only valid // if is_loading_ is true. bool is_load_to_different_document_; // Indicates if the tab is considered crashed. base::TerminationStatus crashed_status_; int crashed_error_code_; // Whether this WebContents is waiting for a first-response for the // main resource of the page. This controls whether the throbber state is // "waiting" or "loading." bool waiting_for_response_; // Map of SiteInstance ID to max page ID for this tab. A page ID is specific // to a given tab and SiteInstance, and must be valid for the lifetime of the // WebContentsImpl. std::map max_page_ids_; // The current load state and the URL associated with it. net::LoadStateWithParam load_state_; base::string16 load_state_host_; // LoadingProgressMap maps FrameTreeNode IDs to a double representing that // frame's completion (from 0 to 1). typedef base::hash_map LoadingProgressMap; LoadingProgressMap loading_progresses_; double loading_total_progress_; base::TimeTicks loading_last_progress_update_; // Counter to track how many frames have sent start notifications but not // stop notifications. int loading_frames_in_progress_; // Upload progress, for displaying in the status bar. // Set to zero when there is no significant upload happening. uint64 upload_size_; uint64 upload_position_; // Data for current page ----------------------------------------------------- // When a title cannot be taken from any entry, this title will be used. base::string16 page_title_when_no_navigation_entry_; // When a navigation occurs, we record its contents MIME type. It can be // used to check whether we can do something for some special contents. std::string contents_mime_type_; // The last reported character encoding, not canonicalized. std::string last_reported_encoding_; // The canonicalized character encoding. std::string canonical_encoding_; // True if this is a secure page which displayed insecure content. bool displayed_insecure_content_; // Whether the initial empty page has been accessed by another page, making it // unsafe to show the pending URL. Usually false unless another window tries // to modify the blank page. Always false after the first commit. bool has_accessed_initial_document_; // Data for misc internal state ---------------------------------------------- // When > 0, the WebContents is currently being captured (e.g., for // screenshots or mirroring); and the underlying RenderWidgetHost should not // be told it is hidden. int capturer_count_; // Tracks whether RWHV should be visible once capturer_count_ becomes zero. bool should_normally_be_visible_; // See getter above. bool is_being_destroyed_; // Indicates whether we should notify about disconnection of this // WebContentsImpl. This is used to ensure disconnection notifications only // happen if a connection notification has happened and that they happen only // once. bool notify_disconnection_; // Pointer to the JavaScript dialog manager, lazily assigned. Used because the // delegate of this WebContentsImpl is nulled before its destructor is called. JavaScriptDialogManager* dialog_manager_; // Set to true when there is an active "before unload" dialog. When true, // we've forced the throbber to start in Navigate, and we need to remember to // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled. bool is_showing_before_unload_dialog_; // Settings that get passed to the renderer process. RendererPreferences renderer_preferences_; // The time that this WebContents was last made active. The initial value is // the WebContents creation time. base::TimeTicks last_active_time_; // See description above setter. bool closed_by_user_gesture_; // Minimum/maximum zoom percent. int minimum_zoom_percent_; int maximum_zoom_percent_; // The raw accumulated zoom value and the actual zoom increments made for an // an in-progress pinch gesture. float totalPinchGestureAmount_; int currentPinchZoomStepDelta_; // The intrinsic size of the page. gfx::Size preferred_size_; // The preferred size for content screen capture. When |capturer_count_| > 0, // this overrides |preferred_size_|. gfx::Size preferred_size_for_capture_; #if defined(OS_ANDROID) // Date time chooser opened by this tab. // Only used in Android since all other platforms use a multi field UI. scoped_ptr date_time_chooser_; #endif // Holds information about a current color chooser dialog, if one is visible. struct ColorChooserInfo { ColorChooserInfo(int render_process_id, int render_frame_id, ColorChooser* chooser, int identifier); ~ColorChooserInfo(); int render_process_id; int render_frame_id; // Color chooser that was opened by this tab. scoped_ptr chooser; // A unique identifier for the current color chooser. Identifiers are // unique across a renderer process. This avoids race conditions in // synchronizing the browser and renderer processes. For example, if a // renderer closes one chooser and opens another, and simultaneously the // user picks a color in the first chooser, the IDs can be used to drop the // "chose a color" message rather than erroneously tell the renderer that // the user picked a color in the second chooser. int identifier; }; scoped_ptr color_chooser_info_; // Manages the embedder state for browser plugins, if this WebContents is an // embedder; NULL otherwise. scoped_ptr browser_plugin_embedder_; // Manages the guest state for browser plugin, if this WebContents is a guest; // NULL otherwise. scoped_ptr browser_plugin_guest_; // This must be at the end, or else we might get notifications and use other // member variables that are gone. NotificationRegistrar registrar_; // Used during IPC message dispatching from the RenderView/RenderFrame so that // the handlers can get a pointer to the RVH through which the message was // received. RenderViewHost* render_view_message_source_; RenderFrameHost* render_frame_message_source_; // All live RenderWidgetHostImpls that are created by this object and may // outlive it. std::set created_widgets_; // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise. int fullscreen_widget_routing_id_; // At the time the fullscreen widget was being shut down, did it have focus? // This is used to restore focus to the WebContentsView after both: 1) the // fullscreen widget is destroyed, and 2) the WebContentsDelegate has // completed making layout changes to effect an exit from fullscreen mode. bool fullscreen_widget_had_focus_at_shutdown_; // Maps the ids of pending image downloads to their callbacks typedef std::map ImageDownloadMap; ImageDownloadMap image_download_map_; // Whether this WebContents is responsible for displaying a subframe in a // different process from its parent page. bool is_subframe_; // Whether overscroll should be unconditionally disabled. bool force_disable_overscroll_content_; // Whether the last JavaScript dialog shown was suppressed. Used for testing. bool last_dialog_suppressed_; scoped_ptr geolocation_dispatcher_host_; scoped_ptr midi_dispatcher_host_; scoped_ptr screen_orientation_dispatcher_host_; scoped_ptr manifest_manager_host_; // The accessibility mode for all frames. This is queried when each frame // is created, and broadcast to all frames when it changes. AccessibilityMode accessibility_mode_; // Monitors power levels for audio streams associated with this WebContents. AudioStreamMonitor audio_stream_monitor_; // Created on-demand to mute all audio output from this WebContents. scoped_ptr audio_muter_; base::WeakPtrFactory loading_weak_factory_; bool virtual_keyboard_requested_; DISALLOW_COPY_AND_ASSIGN(WebContentsImpl); }; } // namespace content #endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_