web_contents_impl.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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/rect_f.h"
42#include "ui/gfx/size.h"
43
44struct BrowserPluginHostMsg_ResizeGuest_Params;
45struct ViewHostMsg_DateTimeDialogValue_Params;
46struct ViewMsg_PostMessage_Params;
47
48namespace content {
49class BrowserPluginEmbedder;
50class BrowserPluginGuest;
51class BrowserPluginGuestManager;
52class DateTimeChooserAndroid;
53class DownloadItem;
54class GeolocationDispatcherHost;
55class InterstitialPageImpl;
56class JavaScriptDialogManager;
57class ManifestManagerHost;
58class MidiDispatcherHost;
59class PowerSaveBlocker;
60class RenderViewHost;
61class RenderViewHostDelegateView;
62class RenderViewHostImpl;
63class RenderWidgetHostImpl;
64class SavePackage;
65class ScreenOrientationDispatcherHost;
66class SiteInstance;
67class TestWebContents;
68class WebContentsAudioMuter;
69class WebContentsDelegate;
70class WebContentsImpl;
71class WebContentsObserver;
72class WebContentsView;
73class WebContentsViewDelegate;
74struct AXEventNotificationDetails;
75struct ColorSuggestion;
76struct FaviconURL;
77struct LoadNotificationDetails;
78struct ResourceRedirectDetails;
79struct ResourceRequestDetails;
80
81#if defined(OS_ANDROID)
82class WebContentsAndroid;
83#endif
84
85// Factory function for the implementations that content knows about. Takes
86// ownership of |delegate|.
87WebContentsView* CreateWebContentsView(
88    WebContentsImpl* web_contents,
89    WebContentsViewDelegate* delegate,
90    RenderViewHostDelegateView** render_view_host_delegate_view);
91
92class 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  virtual ~WebContentsImpl();
103
104  static WebContentsImpl* CreateWithOpener(
105      const WebContents::CreateParams& params,
106      WebContentsImpl* opener);
107
108  static std::vector<WebContentsImpl*> GetAllWebContents();
109
110  // Returns the opener WebContentsImpl, if any. This can be set to null if the
111  // opener is closed or the page clears its window.opener.
112  WebContentsImpl* opener() const { return opener_; }
113
114  // Creates a swapped out RenderView. This is used by the browser plugin to
115  // create a swapped out RenderView in the embedder render process for the
116  // guest, to expose the guest's window object to the embedder.
117  // This returns the routing ID of the newly created swapped out RenderView.
118  int CreateSwappedOutRenderView(SiteInstance* instance);
119
120  // Complex initialization here. Specifically needed to avoid having
121  // members call back into our virtual functions in the constructor.
122  virtual void Init(const WebContents::CreateParams& params);
123
124  // Returns the SavePackage which manages the page saving job. May be NULL.
125  SavePackage* save_package() const { return save_package_.get(); }
126
127#if defined(OS_ANDROID)
128  // In Android WebView, the RenderView needs created even there is no
129  // navigation entry, this allows Android WebViews to use
130  // javascript: URLs that load into the DOMWindow before the first page
131  // load. This is not safe to do in any context that a web page could get a
132  // reference to the DOMWindow before the first page load.
133  bool CreateRenderViewForInitialEmptyDocument();
134#endif
135
136  // Expose the render manager for testing.
137  // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
138  RenderFrameHostManager* GetRenderManagerForTesting();
139
140  // Returns guest browser plugin object, or NULL if this WebContents is not a
141  // guest.
142  BrowserPluginGuest* GetBrowserPluginGuest() const;
143
144  // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
145  // has a BrowserPluginGuest then that implies that it is being hosted by
146  // a BrowserPlugin object in an embedder renderer process.
147  void SetBrowserPluginGuest(BrowserPluginGuest* guest);
148
149  // Returns embedder browser plugin object, or NULL if this WebContents is not
150  // an embedder.
151  BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
152
153  // Gets the current fullscreen render widget's routing ID. Returns
154  // MSG_ROUTING_NONE when there is no fullscreen render widget.
155  int GetFullscreenWidgetRoutingID() const;
156
157  // Invoked when visible SSL state (as defined by SSLStatus) changes.
158  void DidChangeVisibleSSLState();
159
160  // Informs the render view host and the BrowserPluginEmbedder, if present, of
161  // a Drag Source End.
162  void DragSourceEndedAt(int client_x, int client_y, int screen_x,
163      int screen_y, blink::WebDragOperation operation);
164
165  // A response has been received for a resource request.
166  void DidGetResourceResponseStart(
167      const ResourceRequestDetails& details);
168
169  // A redirect was received while requesting a resource.
170  void DidGetRedirectForResourceRequest(
171      RenderViewHost* render_view_host,
172      const ResourceRedirectDetails& details);
173
174  WebContentsView* GetView() const;
175
176  GeolocationDispatcherHost* geolocation_dispatcher_host() {
177    return geolocation_dispatcher_host_.get();
178  }
179
180  ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
181    return screen_orientation_dispatcher_host_.get();
182  }
183
184  bool should_normally_be_visible() { return should_normally_be_visible_; }
185
186  // Broadcasts the mode change to all frames.
187  void SetAccessibilityMode(AccessibilityMode mode);
188
189  // Adds the given accessibility mode to the current accessibility mode
190  // bitmap.
191  void AddAccessibilityMode(AccessibilityMode mode);
192
193  // Removes the given accessibility mode from the current accessibility
194  // mode bitmap, managing the bits that are shared with other modes such
195  // that a bit will only be turned off when all modes that depend on it
196  // have been removed.
197  void RemoveAccessibilityMode(AccessibilityMode mode);
198
199  // WebContents ------------------------------------------------------
200  virtual WebContentsDelegate* GetDelegate() OVERRIDE;
201  virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
202  virtual NavigationControllerImpl& GetController() OVERRIDE;
203  virtual const NavigationControllerImpl& GetController() const OVERRIDE;
204  virtual BrowserContext* GetBrowserContext() const OVERRIDE;
205  virtual const GURL& GetURL() const OVERRIDE;
206  virtual const GURL& GetVisibleURL() const OVERRIDE;
207  virtual const GURL& GetLastCommittedURL() const OVERRIDE;
208  virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
209  virtual RenderFrameHost* GetMainFrame() OVERRIDE;
210  virtual RenderFrameHost* GetFocusedFrame() OVERRIDE;
211  virtual void ForEachFrame(
212      const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
213  virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
214  virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
215  virtual int GetRoutingID() const OVERRIDE;
216  virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE;
217  virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const
218      OVERRIDE;
219  virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE;
220  virtual WebUI* GetWebUI() const OVERRIDE;
221  virtual WebUI* GetCommittedWebUI() const OVERRIDE;
222  virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;
223  virtual const std::string& GetUserAgentOverride() const OVERRIDE;
224  virtual void EnableTreeOnlyAccessibilityMode() OVERRIDE;
225  virtual bool IsTreeOnlyAccessibilityModeForTesting() const OVERRIDE;
226  virtual bool IsFullAccessibilityModeForTesting() const OVERRIDE;
227#if defined(OS_WIN)
228  virtual void SetParentNativeViewAccessible(
229      gfx::NativeViewAccessible accessible_parent) OVERRIDE;
230#endif
231  virtual const base::string16& GetTitle() const OVERRIDE;
232  virtual int32 GetMaxPageID() OVERRIDE;
233  virtual int32 GetMaxPageIDForSiteInstance(
234      SiteInstance* site_instance) OVERRIDE;
235  virtual SiteInstance* GetSiteInstance() const OVERRIDE;
236  virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE;
237  virtual bool IsLoading() const OVERRIDE;
238  virtual bool IsLoadingToDifferentDocument() const OVERRIDE;
239  virtual bool IsWaitingForResponse() const OVERRIDE;
240  virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
241  virtual const base::string16& GetLoadStateHost() const OVERRIDE;
242  virtual uint64 GetUploadSize() const OVERRIDE;
243  virtual uint64 GetUploadPosition() const OVERRIDE;
244  virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
245  virtual const std::string& GetEncoding() const OVERRIDE;
246  virtual bool DisplayedInsecureContent() const OVERRIDE;
247  virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
248  virtual void DecrementCapturerCount() OVERRIDE;
249  virtual int GetCapturerCount() const OVERRIDE;
250  virtual bool IsAudioMuted() const OVERRIDE;
251  virtual void SetAudioMuted(bool mute) OVERRIDE;
252  virtual bool IsCrashed() const OVERRIDE;
253  virtual void SetIsCrashed(base::TerminationStatus status,
254                            int error_code) OVERRIDE;
255  virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
256  virtual bool IsBeingDestroyed() const OVERRIDE;
257  virtual void NotifyNavigationStateChanged(
258      InvalidateTypes changed_flags) OVERRIDE;
259  virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
260  virtual void WasShown() OVERRIDE;
261  virtual void WasHidden() OVERRIDE;
262  virtual bool NeedToFireBeforeUnload() OVERRIDE;
263  virtual void DispatchBeforeUnload(bool for_cross_site_transition) OVERRIDE;
264  virtual void Stop() OVERRIDE;
265  virtual WebContents* Clone() OVERRIDE;
266  virtual void ReloadFocusedFrame(bool ignore_cache) OVERRIDE;
267  virtual void Undo() OVERRIDE;
268  virtual void Redo() OVERRIDE;
269  virtual void Cut() OVERRIDE;
270  virtual void Copy() OVERRIDE;
271  virtual void CopyToFindPboard() OVERRIDE;
272  virtual void Paste() OVERRIDE;
273  virtual void PasteAndMatchStyle() OVERRIDE;
274  virtual void Delete() OVERRIDE;
275  virtual void SelectAll() OVERRIDE;
276  virtual void Unselect() OVERRIDE;
277  virtual void Replace(const base::string16& word) OVERRIDE;
278  virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE;
279  virtual void NotifyContextMenuClosed(
280      const CustomContextMenuContext& context) OVERRIDE;
281  virtual void ExecuteCustomContextMenuCommand(
282      int action, const CustomContextMenuContext& context) OVERRIDE;
283  virtual gfx::NativeView GetNativeView() OVERRIDE;
284  virtual gfx::NativeView GetContentNativeView() OVERRIDE;
285  virtual gfx::NativeWindow GetTopLevelNativeWindow() OVERRIDE;
286  virtual gfx::Rect GetContainerBounds() OVERRIDE;
287  virtual gfx::Rect GetViewBounds() OVERRIDE;
288  virtual DropData* GetDropData() OVERRIDE;
289  virtual void Focus() OVERRIDE;
290  virtual void SetInitialFocus() OVERRIDE;
291  virtual void StoreFocus() OVERRIDE;
292  virtual void RestoreFocus() OVERRIDE;
293  virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
294  virtual bool ShowingInterstitialPage() const OVERRIDE;
295  virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
296  virtual bool IsSavable() OVERRIDE;
297  virtual void OnSavePage() OVERRIDE;
298  virtual bool SavePage(const base::FilePath& main_file,
299                        const base::FilePath& dir_path,
300                        SavePageType save_type) OVERRIDE;
301  virtual void SaveFrame(const GURL& url,
302                         const Referrer& referrer) OVERRIDE;
303  virtual void GenerateMHTML(
304      const base::FilePath& file,
305      const base::Callback<void(int64)>& callback)
306          OVERRIDE;
307  virtual const std::string& GetContentsMimeType() const OVERRIDE;
308  virtual bool WillNotifyDisconnection() const OVERRIDE;
309  virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
310  virtual void ResetOverrideEncoding() OVERRIDE;
311  virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
312  virtual void Close() OVERRIDE;
313  virtual void SystemDragEnded() OVERRIDE;
314  virtual void UserGestureDone() OVERRIDE;
315  virtual void SetClosedByUserGesture(bool value) OVERRIDE;
316  virtual bool GetClosedByUserGesture() const OVERRIDE;
317  virtual void ViewSource() OVERRIDE;
318  virtual void ViewFrameSource(const GURL& url,
319                               const PageState& page_state) OVERRIDE;
320  virtual int GetMinimumZoomPercent() const OVERRIDE;
321  virtual int GetMaximumZoomPercent() const OVERRIDE;
322  virtual gfx::Size GetPreferredSize() const OVERRIDE;
323  virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
324  virtual bool HasOpener() const OVERRIDE;
325  virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
326  virtual void DidEndColorChooser() OVERRIDE;
327  virtual int DownloadImage(const GURL& url,
328                            bool is_favicon,
329                            uint32_t max_bitmap_size,
330                            const ImageDownloadCallback& callback) OVERRIDE;
331  virtual bool IsSubframe() const OVERRIDE;
332  virtual void Find(int request_id,
333                    const base::string16& search_text,
334                    const blink::WebFindOptions& options) OVERRIDE;
335  virtual void StopFinding(StopFindAction action) OVERRIDE;
336  virtual void InsertCSS(const std::string& css) OVERRIDE;
337  virtual bool WasRecentlyAudible() OVERRIDE;
338  virtual void GetManifest(const GetManifestCallback&) OVERRIDE;
339#if defined(OS_ANDROID)
340  virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
341      OVERRIDE;
342  virtual WebContentsAndroid* GetWebContentsAndroid();
343#elif defined(OS_MACOSX)
344  virtual void SetAllowOtherViews(bool allow) OVERRIDE;
345  virtual bool GetAllowOtherViews() OVERRIDE;
346#endif
347
348  // Implementation of PageNavigator.
349  virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
350
351  // Implementation of IPC::Sender.
352  virtual bool Send(IPC::Message* message) OVERRIDE;
353
354  // RenderFrameHostDelegate ---------------------------------------------------
355  virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
356                                 const IPC::Message& message) OVERRIDE;
357  virtual const GURL& GetMainFrameLastCommittedURL() const OVERRIDE;
358  virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
359  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
360  virtual void DidStartLoading(RenderFrameHost* render_frame_host,
361                               bool to_different_document) OVERRIDE;
362  virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE;
363  virtual void DidDeferAfterResponseStarted(
364      const TransitionLayerData& transition_data) OVERRIDE;
365  virtual bool WillHandleDeferAfterResponseStarted() OVERRIDE;
366  virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE;
367  virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
368                               const ContextMenuParams& params) OVERRIDE;
369  virtual void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
370                                    const base::string16& message,
371                                    const base::string16& default_prompt,
372                                    const GURL& frame_url,
373                                    JavaScriptMessageType type,
374                                    IPC::Message* reply_msg) OVERRIDE;
375  virtual void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
376                                      const base::string16& message,
377                                      bool is_reload,
378                                      IPC::Message* reply_msg) OVERRIDE;
379  virtual void DidAccessInitialDocument() OVERRIDE;
380  virtual void DidDisownOpener(RenderFrameHost* render_frame_host) OVERRIDE;
381  virtual void DocumentOnLoadCompleted(
382      RenderFrameHost* render_frame_host) OVERRIDE;
383  virtual void UpdateTitle(RenderFrameHost* render_frame_host,
384                           int32 page_id,
385                           const base::string16& title,
386                           base::i18n::TextDirection title_direction) OVERRIDE;
387  virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
388                              const std::string& encoding) OVERRIDE;
389  virtual WebContents* GetAsWebContents() OVERRIDE;
390  virtual bool IsNeverVisible() OVERRIDE;
391  virtual AccessibilityMode GetAccessibilityMode() const OVERRIDE;
392  virtual void AccessibilityEventReceived(
393      const std::vector<AXEventNotificationDetails>& details) OVERRIDE;
394  virtual RenderFrameHost* GetGuestByInstanceID(int browser_plugin_instance_id)
395      OVERRIDE;
396#if defined(OS_WIN)
397  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
398#endif
399
400  // RenderViewHostDelegate ----------------------------------------------------
401  virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
402  virtual bool OnMessageReceived(RenderViewHost* render_view_host,
403                                 const IPC::Message& message) OVERRIDE;
404  // RenderFrameHostDelegate has the same method, so list it there because this
405  // interface is going away.
406  // virtual WebContents* GetAsWebContents() OVERRIDE;
407  virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
408  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
409  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
410  virtual void RenderViewTerminated(RenderViewHost* render_view_host,
411                                    base::TerminationStatus status,
412                                    int error_code) OVERRIDE;
413  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
414  virtual void UpdateState(RenderViewHost* render_view_host,
415                           int32 page_id,
416                           const PageState& page_state) OVERRIDE;
417  virtual void UpdateTargetURL(const GURL& url) OVERRIDE;
418  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
419  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
420  virtual void DidCancelLoading() OVERRIDE;
421  virtual void DocumentAvailableInMainFrame(
422      RenderViewHost* render_view_host) OVERRIDE;
423  virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
424  virtual void RouteMessageEvent(
425      RenderViewHost* rvh,
426      const ViewMsg_PostMessage_Params& params) OVERRIDE;
427  virtual bool AddMessageToConsole(int32 level,
428                                   const base::string16& message,
429                                   int32 line_no,
430                                   const base::string16& source_id) OVERRIDE;
431  virtual RendererPreferences GetRendererPrefs(
432      BrowserContext* browser_context) const OVERRIDE;
433  virtual WebPreferences ComputeWebkitPrefs() OVERRIDE;
434  virtual void OnUserGesture() OVERRIDE;
435  virtual void OnIgnoredUIEvent() OVERRIDE;
436  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
437                                    bool is_during_beforeunload,
438                                    bool is_during_unload) OVERRIDE;
439  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
440  virtual void LoadStateChanged(const GURL& url,
441                                const net::LoadStateWithParam& load_state,
442                                uint64 upload_position,
443                                uint64 upload_size) OVERRIDE;
444  virtual void Activate() OVERRIDE;
445  virtual void Deactivate() OVERRIDE;
446  virtual void LostCapture() OVERRIDE;
447  virtual void HandleMouseDown() OVERRIDE;
448  virtual void HandleMouseUp() OVERRIDE;
449  virtual void HandlePointerActivate() OVERRIDE;
450  virtual void HandleGestureBegin() OVERRIDE;
451  virtual void HandleGestureEnd() OVERRIDE;
452  virtual void RunFileChooser(
453      RenderViewHost* render_view_host,
454      const FileChooserParams& params) OVERRIDE;
455  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
456  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
457  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
458  virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
459  virtual void RequestToLockMouse(bool user_gesture,
460                                  bool last_unlocked_by_target) OVERRIDE;
461  virtual void LostMouseLock() OVERRIDE;
462  virtual void CreateNewWindow(
463      int render_process_id,
464      int route_id,
465      int main_frame_route_id,
466      const ViewHostMsg_CreateWindow_Params& params,
467      SessionStorageNamespace* session_storage_namespace) OVERRIDE;
468  virtual void CreateNewWidget(int render_process_id,
469                               int route_id,
470                               blink::WebPopupType popup_type) OVERRIDE;
471  virtual void CreateNewFullscreenWidget(int render_process_id,
472                                         int route_id) OVERRIDE;
473  virtual void ShowCreatedWindow(int route_id,
474                                 WindowOpenDisposition disposition,
475                                 const gfx::Rect& initial_pos,
476                                 bool user_gesture) OVERRIDE;
477  virtual void ShowCreatedWidget(int route_id,
478                                 const gfx::Rect& initial_pos) OVERRIDE;
479  virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
480  virtual void RequestMediaAccessPermission(
481      const MediaStreamRequest& request,
482      const MediaResponseCallback& callback) OVERRIDE;
483  virtual bool CheckMediaAccessPermission(const GURL& security_origin,
484                                          MediaStreamType type) OVERRIDE;
485  virtual SessionStorageNamespace* GetSessionStorageNamespace(
486      SiteInstance* instance) OVERRIDE;
487  virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap() OVERRIDE;
488  virtual FrameTree* GetFrameTree() OVERRIDE;
489
490  // NavigatorDelegate ---------------------------------------------------------
491
492  virtual void DidStartProvisionalLoad(
493      RenderFrameHostImpl* render_frame_host,
494      const GURL& validated_url,
495      bool is_error_page,
496      bool is_iframe_srcdoc) OVERRIDE;
497  virtual void DidStartNavigationTransition(
498      RenderFrameHostImpl* render_frame_host) OVERRIDE;
499  virtual void DidFailProvisionalLoadWithError(
500      RenderFrameHostImpl* render_frame_host,
501      const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
502      OVERRIDE;
503  virtual void DidFailLoadWithError(
504      RenderFrameHostImpl* render_frame_host,
505      const GURL& url,
506      int error_code,
507      const base::string16& error_description) OVERRIDE;
508  virtual void DidCommitProvisionalLoad(
509      RenderFrameHostImpl* render_frame_host,
510      const GURL& url,
511      ui::PageTransition transition_type) OVERRIDE;
512  virtual void DidNavigateMainFramePreCommit(
513      bool navigation_is_within_page) OVERRIDE;
514  virtual void DidNavigateMainFramePostCommit(
515      const LoadCommittedDetails& details,
516      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
517  virtual void DidNavigateAnyFramePostCommit(
518      RenderFrameHostImpl* render_frame_host,
519      const LoadCommittedDetails& details,
520      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
521  virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
522  virtual bool CanOverscrollContent() const OVERRIDE;
523  virtual void NotifyChangedNavigationState(
524      InvalidateTypes changed_flags) OVERRIDE;
525  virtual void AboutToNavigateRenderFrame(
526      RenderFrameHostImpl* render_frame_host) OVERRIDE;
527  virtual void DidStartNavigationToPendingEntry(
528      RenderFrameHostImpl* render_frame_host,
529      const GURL& url,
530      NavigationController::ReloadType reload_type) OVERRIDE;
531  virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
532                              const OpenURLParams& params) OVERRIDE;
533  virtual bool ShouldPreserveAbortedURLs() OVERRIDE;
534
535  // RenderWidgetHostDelegate --------------------------------------------------
536
537  virtual void RenderWidgetDeleted(
538      RenderWidgetHostImpl* render_widget_host) OVERRIDE;
539  virtual bool PreHandleKeyboardEvent(
540      const NativeWebKeyboardEvent& event,
541      bool* is_keyboard_shortcut) OVERRIDE;
542  virtual void HandleKeyboardEvent(
543      const NativeWebKeyboardEvent& event) OVERRIDE;
544  virtual bool HandleWheelEvent(
545      const blink::WebMouseWheelEvent& event) OVERRIDE;
546  virtual bool PreHandleGestureEvent(
547      const blink::WebGestureEvent& event) OVERRIDE;
548  virtual bool HandleGestureEvent(
549      const blink::WebGestureEvent& event) OVERRIDE;
550  virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
551  virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager()
552      OVERRIDE;
553  virtual BrowserAccessibilityManager*
554      GetOrCreateRootBrowserAccessibilityManager() OVERRIDE;
555
556  // RenderFrameHostManager::Delegate ------------------------------------------
557
558  virtual bool CreateRenderViewForRenderManager(
559      RenderViewHost* render_view_host,
560      int opener_route_id,
561      int proxy_routing_id,
562      bool for_main_frame_navigation) OVERRIDE;
563  virtual bool CreateRenderFrameForRenderManager(
564      RenderFrameHost* render_frame_host,
565      int parent_routing_id) OVERRIDE;
566  virtual void BeforeUnloadFiredFromRenderManager(
567      bool proceed, const base::TimeTicks& proceed_time,
568      bool* proceed_to_fire_unload) OVERRIDE;
569  virtual void RenderProcessGoneFromRenderManager(
570      RenderViewHost* render_view_host) OVERRIDE;
571  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
572  virtual void CancelModalDialogsForRenderManager() OVERRIDE;
573  virtual void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
574                                              RenderFrameHost* new_host,
575                                              bool is_main_frame) OVERRIDE;
576  virtual int CreateOpenerRenderViewsForRenderManager(
577      SiteInstance* instance) OVERRIDE;
578  virtual NavigationControllerImpl&
579      GetControllerForRenderManager() OVERRIDE;
580  virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
581  virtual NavigationEntry*
582      GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
583  virtual bool FocusLocationBarByDefault() OVERRIDE;
584  virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
585  virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
586  virtual bool IsHidden() OVERRIDE;
587
588  // NotificationObserver ------------------------------------------------------
589
590  virtual void Observe(int type,
591                       const NotificationSource& source,
592                       const NotificationDetails& details) OVERRIDE;
593
594  // NavigationControllerDelegate ----------------------------------------------
595
596  virtual WebContents* GetWebContents() OVERRIDE;
597  virtual void NotifyNavigationEntryCommitted(
598      const LoadCommittedDetails& load_details) OVERRIDE;
599
600  // Invoked before a form repost warning is shown.
601  virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
602
603  // Activate this WebContents and show a form repost warning.
604  virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
605
606  // Whether the initial empty page of this view has been accessed by another
607  // page, making it unsafe to show the pending URL. Always false after the
608  // first commit.
609  virtual bool HasAccessedInitialDocument() OVERRIDE;
610
611  // Updates the max page ID for the current SiteInstance in this
612  // WebContentsImpl to be at least |page_id|.
613  virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
614
615  // Updates the max page ID for the given SiteInstance in this WebContentsImpl
616  // to be at least |page_id|.
617  virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
618                                              int32 page_id) OVERRIDE;
619
620  // Copy the current map of SiteInstance ID to max page ID from another tab.
621  // This is necessary when this tab adopts the NavigationEntries from
622  // |web_contents|.
623  virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
624
625  // Called by the NavigationController to cause the WebContentsImpl to navigate
626  // to the current pending entry. The NavigationController should be called
627  // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
628  // The callbacks can be inside of this function, or at some future time.
629  //
630  // The entry has a PageID of -1 if newly created (corresponding to navigation
631  // to a new URL).
632  //
633  // If this method returns false, then the navigation is discarded (equivalent
634  // to calling DiscardPendingEntry on the NavigationController).
635  virtual bool NavigateToPendingEntry(
636      NavigationController::ReloadType reload_type) OVERRIDE;
637
638  // Sets the history for this WebContentsImpl to |history_length| entries, and
639  // moves the current page_id to the last entry in the list if it's valid.
640  // This is mainly used when a prerendered page is swapped into the current
641  // tab. The method is virtual for testing.
642  virtual void SetHistoryLengthAndPrune(
643      const SiteInstance* site_instance,
644      int merge_history_length,
645      int32 minimum_page_id) OVERRIDE;
646
647  // Called by InterstitialPageImpl when it creates a RenderFrameHost.
648  virtual void RenderFrameForInterstitialPageCreated(
649      RenderFrameHost* render_frame_host) OVERRIDE;
650
651  // Sets the passed interstitial as the currently showing interstitial.
652  // No interstitial page should already be attached.
653  virtual void AttachInterstitialPage(
654      InterstitialPageImpl* interstitial_page) OVERRIDE;
655
656  // Unsets the currently showing interstitial.
657  virtual void DetachInterstitialPage() OVERRIDE;
658
659  // Changes the IsLoading state and notifies the delegate as needed.
660  // |details| is used to provide details on the load that just finished
661  // (but can be null if not applicable).
662  virtual void SetIsLoading(RenderViewHost* render_view_host,
663                            bool is_loading,
664                            bool to_different_document,
665                            LoadNotificationDetails* details) OVERRIDE;
666
667  typedef base::Callback<void(WebContents*)> CreatedCallback;
668
669  // Requests the renderer to select the region between two points in the
670  // currently focused frame.
671  void SelectRange(const gfx::Point& start, const gfx::Point& end);
672
673  // Notifies the main frame that it can continue navigation (if it was deferred
674  // immediately at first response).
675  void ResumeResponseDeferredAtStart();
676
677  // Forces overscroll to be disabled (used by touch emulation).
678  void SetForceDisableOverscrollContent(bool force_disable);
679
680  AudioStreamMonitor* audio_stream_monitor() {
681    return &audio_stream_monitor_;
682  }
683
684  bool has_audio_power_save_blocker_for_testing() const {
685    return audio_power_save_blocker_;
686  }
687
688  bool has_video_power_save_blocker_for_testing() const {
689    return video_power_save_blocker_;
690  }
691
692 private:
693  friend class TestNavigationObserver;
694  friend class WebContentsAddedObserver;
695  friend class WebContentsObserver;
696  friend class WebContents;  // To implement factory methods.
697
698  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
699  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
700  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
701  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
702                           CrossSiteCantPreemptAfterUnload);
703  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
704  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
705  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
706  FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
707  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
708  FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
709  FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
710  FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
711                           CrossSiteIframeAccessibility);
712
713  // So InterstitialPageImpl can access SetIsLoading.
714  friend class InterstitialPageImpl;
715
716  // TODO(brettw) TestWebContents shouldn't exist!
717  friend class TestWebContents;
718
719  class DestructionObserver;
720
721  // See WebContents::Create for a description of these parameters.
722  WebContentsImpl(BrowserContext* browser_context,
723                  WebContentsImpl* opener);
724
725  // Add and remove observers for page navigation notifications. The order in
726  // which notifications are sent to observers is undefined. Clients must be
727  // sure to remove the observer before they go away.
728  void AddObserver(WebContentsObserver* observer);
729  void RemoveObserver(WebContentsObserver* observer);
730
731  // Clears this tab's opener if it has been closed.
732  void OnWebContentsDestroyed(WebContentsImpl* web_contents);
733
734  // Creates and adds to the map a destruction observer watching |web_contents|.
735  // No-op if such an observer already exists.
736  void AddDestructionObserver(WebContentsImpl* web_contents);
737
738  // Deletes and removes from the map a destruction observer
739  // watching |web_contents|. No-op if there is no such observer.
740  void RemoveDestructionObserver(WebContentsImpl* web_contents);
741
742  // Traverses all the RenderFrameHosts in the FrameTree and creates a set
743  // all the unique RenderWidgetHostViews.
744  std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
745
746  // Callback function when showing JavaScript dialogs.  Takes in a routing ID
747  // pair to identify the RenderFrameHost that opened the dialog, because it's
748  // possible for the RenderFrameHost to be deleted by the time this is called.
749  void OnDialogClosed(int render_process_id,
750                      int render_frame_id,
751                      IPC::Message* reply_msg,
752                      bool dialog_was_suppressed,
753                      bool success,
754                      const base::string16& user_input);
755
756  // Callback function when requesting permission to access the PPAPI broker.
757  // |result| is true if permission was granted.
758  void OnPpapiBrokerPermissionResult(int routing_id, bool result);
759
760  bool OnMessageReceived(RenderViewHost* render_view_host,
761                         RenderFrameHost* render_frame_host,
762                         const IPC::Message& message);
763
764  // IPC message handlers.
765  void OnThemeColorChanged(SkColor theme_color);
766  void OnDidLoadResourceFromMemoryCache(const GURL& url,
767                                        const std::string& security_info,
768                                        const std::string& http_request,
769                                        const std::string& mime_type,
770                                        ResourceType resource_type);
771  void OnDidDisplayInsecureContent();
772  void OnDidRunInsecureContent(const std::string& security_origin,
773                               const GURL& target_url);
774  void OnDocumentLoadedInFrame();
775  void OnDidFinishLoad(const GURL& url);
776  void OnDidStartLoading(bool to_different_document);
777  void OnDidStopLoading();
778  void OnDidChangeLoadProgress(double load_progress);
779  void OnGoToEntryAtOffset(int offset);
780  void OnUpdateZoomLimits(int minimum_percent,
781                          int maximum_percent);
782  void OnEnumerateDirectory(int request_id, const base::FilePath& path);
783
784  void OnRegisterProtocolHandler(const std::string& protocol,
785                                 const GURL& url,
786                                 const base::string16& title,
787                                 bool user_gesture);
788  void OnUnregisterProtocolHandler(const std::string& protocol,
789                                   const GURL& url,
790                                   bool user_gesture);
791  void OnFindReply(int request_id,
792                   int number_of_matches,
793                   const gfx::Rect& selection_rect,
794                   int active_match_ordinal,
795                   bool final_update);
796#if defined(OS_ANDROID)
797  void OnFindMatchRectsReply(int version,
798                             const std::vector<gfx::RectF>& rects,
799                             const gfx::RectF& active_rect);
800
801  void OnOpenDateTimeDialog(
802      const ViewHostMsg_DateTimeDialogValue_Params& value);
803#endif
804  void OnPepperPluginHung(int plugin_child_id,
805                          const base::FilePath& path,
806                          bool is_hung);
807  void OnPluginCrashed(const base::FilePath& plugin_path,
808                       base::ProcessId plugin_pid);
809  void OnDomOperationResponse(const std::string& json_string,
810                              int automation_id);
811  void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
812  void OnOpenColorChooser(int color_chooser_id,
813                          SkColor color,
814                          const std::vector<ColorSuggestion>& suggestions);
815  void OnEndColorChooser(int color_chooser_id);
816  void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
817  void OnWebUISend(const GURL& source_url,
818                   const std::string& name,
819                   const base::ListValue& args);
820  void OnRequestPpapiBrokerPermission(int routing_id,
821                                      const GURL& url,
822                                      const base::FilePath& plugin_path);
823  void OnBrowserPluginMessage(const IPC::Message& message);
824  void OnDidDownloadImage(int id,
825                          int http_status_code,
826                          const GURL& image_url,
827                          const std::vector<SkBitmap>& bitmaps,
828                          const std::vector<gfx::Size>& original_bitmap_sizes);
829  void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
830  void OnFirstVisuallyNonEmptyPaint();
831  void OnMediaPlayingNotification(int64 player_cookie,
832                                  bool has_video,
833                                  bool has_audio);
834  void OnMediaPausedNotification(int64 player_cookie);
835  void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
836                               const base::string16& main_text,
837                               const base::string16& sub_text);
838  void OnHideValidationMessage();
839  void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
840
841  // Called by derived classes to indicate that we're no longer waiting for a
842  // response. This won't actually update the throbber, but it will get picked
843  // up at the next animation step if the throbber is going.
844  void SetNotWaitingForResponse() { waiting_for_response_ = false; }
845
846  // Navigation helpers --------------------------------------------------------
847  //
848  // These functions are helpers for Navigate() and DidNavigate().
849
850  // Handles post-navigation tasks in DidNavigate AFTER the entry has been
851  // committed to the navigation controller. Note that the navigation entry is
852  // not provided since it may be invalid/changed after being committed. The
853  // current navigation entry is in the NavigationController at this point.
854
855  // If our controller was restored, update the max page ID associated with the
856  // given RenderViewHost to be larger than the number of restored entries.
857  // This is called in CreateRenderView before any navigations in the RenderView
858  // have begun, to prevent any races in updating RenderView::next_page_id.
859  void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
860
861  // Saves the given title to the navigation entry and does associated work. It
862  // will update history and the view for the new title, and also synthesize
863  // titles for file URLs that have none (so we require that the URL of the
864  // entry already be set).
865  //
866  // This is used as the backend for state updates, which include a new title,
867  // or the dedicated set title message. It returns true if the new title is
868  // different and was therefore updated.
869  bool UpdateTitleForEntry(NavigationEntryImpl* entry,
870                           const base::string16& title);
871
872  // Recursively creates swapped out RenderViews for this tab's opener chain
873  // (including this tab) in the given SiteInstance, allowing other tabs to send
874  // cross-process JavaScript calls to their opener(s).  Returns the route ID of
875  // this tab's RenderView for |instance|.
876  int CreateOpenerRenderViews(SiteInstance* instance);
877
878  // Helper for CreateNewWidget/CreateNewFullscreenWidget.
879  void CreateNewWidget(int render_process_id,
880                       int route_id,
881                       bool is_fullscreen,
882                       blink::WebPopupType popup_type);
883
884  // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
885  void ShowCreatedWidget(int route_id,
886                         bool is_fullscreen,
887                         const gfx::Rect& initial_pos);
888
889  // Finds the new RenderWidgetHost and returns it. Note that this can only be
890  // called once as this call also removes it from the internal map.
891  RenderWidgetHostView* GetCreatedWidget(int route_id);
892
893  // Finds the new WebContentsImpl by route_id, initializes it for
894  // renderer-initiated creation, and returns it. Note that this can only be
895  // called once as this call also removes it from the internal map.
896  WebContentsImpl* GetCreatedWindow(int route_id);
897
898  // Tracking loading progress -------------------------------------------------
899
900  // Resets the tracking state of the current load.
901  void ResetLoadProgressState();
902
903  // Calculates the progress of the current load and notifies the delegate.
904  void SendLoadProgressChanged();
905
906  // Called once when the last frame on the page has stopped loading.
907  void DidStopLoading(RenderFrameHost* render_frame_host);
908
909  // Misc non-view stuff -------------------------------------------------------
910
911  // Helper functions for sending notifications.
912  void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
913  void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
914  void NotifyDisconnected();
915
916  void SetEncoding(const std::string& encoding);
917
918  // TODO(creis): This should take in a FrameTreeNode to know which node's
919  // render manager to return.  For now, we just return the root's.
920  RenderFrameHostManager* GetRenderManager() const;
921
922  RenderViewHostImpl* GetRenderViewHostImpl();
923
924  // Removes browser plugin embedder if there is one.
925  void RemoveBrowserPluginEmbedder();
926
927  // Clear |render_frame_host|'s tracking entry for its power save blockers.
928  void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
929
930  // Clear tracking entries for all RenderFrameHosts, clears
931  // |audio_power_save_blocker_| and |video_power_save_blocker_|.
932  void ClearAllPowerSaveBlockers();
933
934  // Creates an audio or video power save blocker respectively.
935  void CreateAudioPowerSaveBlocker();
936  void CreateVideoPowerSaveBlocker();
937
938  // Releases the audio power save blockers if |active_audio_players_| is empty.
939  // Likewise, releases the video power save blockers if |active_video_players_|
940  // is empty.
941  void MaybeReleasePowerSaveBlockers();
942
943  // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
944  gfx::Size GetSizeForNewRenderView();
945
946  void OnFrameRemoved(RenderFrameHost* render_frame_host);
947
948  // Helper method that's called whenever |preferred_size_| or
949  // |preferred_size_for_capture_| changes, to propagate the new value to the
950  // |delegate_|.
951  void OnPreferredSizeChanged(const gfx::Size& old_size);
952
953  // Helper methods for adding or removing player entries in |player_map| under
954  // the key |render_frame_message_source_|.
955  typedef std::vector<int64> PlayerList;
956  typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
957  void AddMediaPlayerEntry(int64 player_cookie,
958                           ActiveMediaPlayerMap* player_map);
959  void RemoveMediaPlayerEntry(int64 player_cookie,
960                              ActiveMediaPlayerMap* player_map);
961  // Removes all entries from |player_map| for |render_frame_host|.
962  void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
963                                   ActiveMediaPlayerMap* player_map);
964
965  // Adds/removes a callback called on creation of each new WebContents.
966  // Deprecated, about to remove.
967  static void AddCreatedCallback(const CreatedCallback& callback);
968  static void RemoveCreatedCallback(const CreatedCallback& callback);
969
970  // Data for core operation ---------------------------------------------------
971
972  // Delegate for notifying our owner about stuff. Not owned by us.
973  WebContentsDelegate* delegate_;
974
975  // Handles the back/forward list and loading.
976  NavigationControllerImpl controller_;
977
978  // The corresponding view.
979  scoped_ptr<WebContentsView> view_;
980
981  // The view of the RVHD. Usually this is our WebContentsView implementation,
982  // but if an embedder uses a different WebContentsView, they'll need to
983  // provide this.
984  RenderViewHostDelegateView* render_view_host_delegate_view_;
985
986  // Tracks created WebContentsImpl objects that have not been shown yet. They
987  // are identified by the route ID passed to CreateNewWindow.
988  typedef std::map<int, WebContentsImpl*> PendingContents;
989  PendingContents pending_contents_;
990
991  // These maps hold on to the widgets that we created on behalf of the renderer
992  // that haven't shown yet.
993  typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
994  PendingWidgetViews pending_widget_views_;
995
996  typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
997  DestructionObservers destruction_observers_;
998
999  // A list of observers notified when page state changes. Weak references.
1000  // This MUST be listed above frame_tree_ since at destruction time the
1001  // latter might cause RenderViewHost's destructor to call us and we might use
1002  // the observer list then.
1003  ObserverList<WebContentsObserver> observers_;
1004
1005  // The tab that opened this tab, if any.  Will be set to null if the opener
1006  // is closed.
1007  WebContentsImpl* opener_;
1008
1009  // True if this tab was opened by another tab. This is not unset if the opener
1010  // is closed.
1011  bool created_with_opener_;
1012
1013#if defined(OS_WIN)
1014  gfx::NativeViewAccessible accessible_parent_;
1015#endif
1016
1017  // Helper classes ------------------------------------------------------------
1018
1019  // Tracking variables and associated power save blockers for media playback.
1020  ActiveMediaPlayerMap active_audio_players_;
1021  ActiveMediaPlayerMap active_video_players_;
1022  scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1023  scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1024
1025  // Manages the frame tree of the page and process swaps in each node.
1026  FrameTree frame_tree_;
1027
1028  // SavePackage, lazily created.
1029  scoped_refptr<SavePackage> save_package_;
1030
1031  // Data for loading state ----------------------------------------------------
1032
1033  // Indicates whether we're currently loading a resource.
1034  bool is_loading_;
1035
1036  // Indicates whether the current load is to a different document. Only valid
1037  // if is_loading_ is true.
1038  bool is_load_to_different_document_;
1039
1040  // Indicates if the tab is considered crashed.
1041  base::TerminationStatus crashed_status_;
1042  int crashed_error_code_;
1043
1044  // Whether this WebContents is waiting for a first-response for the
1045  // main resource of the page. This controls whether the throbber state is
1046  // "waiting" or "loading."
1047  bool waiting_for_response_;
1048
1049  // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1050  // to a given tab and SiteInstance, and must be valid for the lifetime of the
1051  // WebContentsImpl.
1052  std::map<int32, int32> max_page_ids_;
1053
1054  // The current load state and the URL associated with it.
1055  net::LoadStateWithParam load_state_;
1056  base::string16 load_state_host_;
1057
1058  // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
1059  // frame's completion (from 0 to 1).
1060  typedef base::hash_map<int64, double> LoadingProgressMap;
1061  LoadingProgressMap loading_progresses_;
1062  double loading_total_progress_;
1063
1064  base::TimeTicks loading_last_progress_update_;
1065
1066  // Counter to track how many frames have sent start notifications but not
1067  // stop notifications.
1068  int loading_frames_in_progress_;
1069
1070  // Upload progress, for displaying in the status bar.
1071  // Set to zero when there is no significant upload happening.
1072  uint64 upload_size_;
1073  uint64 upload_position_;
1074
1075  // Data for current page -----------------------------------------------------
1076
1077  // When a title cannot be taken from any entry, this title will be used.
1078  base::string16 page_title_when_no_navigation_entry_;
1079
1080  // When a navigation occurs, we record its contents MIME type. It can be
1081  // used to check whether we can do something for some special contents.
1082  std::string contents_mime_type_;
1083
1084  // The last reported character encoding, not canonicalized.
1085  std::string last_reported_encoding_;
1086
1087  // The canonicalized character encoding.
1088  std::string canonical_encoding_;
1089
1090  // True if this is a secure page which displayed insecure content.
1091  bool displayed_insecure_content_;
1092
1093  // Whether the initial empty page has been accessed by another page, making it
1094  // unsafe to show the pending URL. Usually false unless another window tries
1095  // to modify the blank page.  Always false after the first commit.
1096  bool has_accessed_initial_document_;
1097
1098  // Data for misc internal state ----------------------------------------------
1099
1100  // When > 0, the WebContents is currently being captured (e.g., for
1101  // screenshots or mirroring); and the underlying RenderWidgetHost should not
1102  // be told it is hidden.
1103  int capturer_count_;
1104
1105  // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1106  bool should_normally_be_visible_;
1107
1108  // See getter above.
1109  bool is_being_destroyed_;
1110
1111  // Indicates whether we should notify about disconnection of this
1112  // WebContentsImpl. This is used to ensure disconnection notifications only
1113  // happen if a connection notification has happened and that they happen only
1114  // once.
1115  bool notify_disconnection_;
1116
1117  // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1118  // delegate of this WebContentsImpl is nulled before its destructor is called.
1119  JavaScriptDialogManager* dialog_manager_;
1120
1121  // Set to true when there is an active "before unload" dialog.  When true,
1122  // we've forced the throbber to start in Navigate, and we need to remember to
1123  // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1124  bool is_showing_before_unload_dialog_;
1125
1126  // Settings that get passed to the renderer process.
1127  RendererPreferences renderer_preferences_;
1128
1129  // The time that this WebContents was last made active. The initial value is
1130  // the WebContents creation time.
1131  base::TimeTicks last_active_time_;
1132
1133  // See description above setter.
1134  bool closed_by_user_gesture_;
1135
1136  // Minimum/maximum zoom percent.
1137  int minimum_zoom_percent_;
1138  int maximum_zoom_percent_;
1139
1140  // The raw accumulated zoom value and the actual zoom increments made for an
1141  // an in-progress pinch gesture.
1142  float totalPinchGestureAmount_;
1143  int currentPinchZoomStepDelta_;
1144
1145  // The intrinsic size of the page.
1146  gfx::Size preferred_size_;
1147
1148  // The preferred size for content screen capture.  When |capturer_count_| > 0,
1149  // this overrides |preferred_size_|.
1150  gfx::Size preferred_size_for_capture_;
1151
1152#if defined(OS_ANDROID)
1153  // Date time chooser opened by this tab.
1154  // Only used in Android since all other platforms use a multi field UI.
1155  scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1156#endif
1157
1158  // Holds information about a current color chooser dialog, if one is visible.
1159  struct ColorChooserInfo {
1160    ColorChooserInfo(int render_process_id,
1161                     int render_frame_id,
1162                     ColorChooser* chooser,
1163                     int identifier);
1164    ~ColorChooserInfo();
1165
1166    int render_process_id;
1167    int render_frame_id;
1168
1169    // Color chooser that was opened by this tab.
1170    scoped_ptr<ColorChooser> chooser;
1171
1172    // A unique identifier for the current color chooser.  Identifiers are
1173    // unique across a renderer process.  This avoids race conditions in
1174    // synchronizing the browser and renderer processes.  For example, if a
1175    // renderer closes one chooser and opens another, and simultaneously the
1176    // user picks a color in the first chooser, the IDs can be used to drop the
1177    // "chose a color" message rather than erroneously tell the renderer that
1178    // the user picked a color in the second chooser.
1179    int identifier;
1180  };
1181
1182  scoped_ptr<ColorChooserInfo> color_chooser_info_;
1183
1184  // Manages the embedder state for browser plugins, if this WebContents is an
1185  // embedder; NULL otherwise.
1186  scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1187  // Manages the guest state for browser plugin, if this WebContents is a guest;
1188  // NULL otherwise.
1189  scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1190
1191  // This must be at the end, or else we might get notifications and use other
1192  // member variables that are gone.
1193  NotificationRegistrar registrar_;
1194
1195  // Used during IPC message dispatching from the RenderView/RenderFrame so that
1196  // the handlers can get a pointer to the RVH through which the message was
1197  // received.
1198  RenderViewHost* render_view_message_source_;
1199  RenderFrameHost* render_frame_message_source_;
1200
1201  // All live RenderWidgetHostImpls that are created by this object and may
1202  // outlive it.
1203  std::set<RenderWidgetHostImpl*> created_widgets_;
1204
1205  // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1206  int fullscreen_widget_routing_id_;
1207
1208  // At the time the fullscreen widget was being shut down, did it have focus?
1209  // This is used to restore focus to the WebContentsView after both: 1) the
1210  // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1211  // completed making layout changes to effect an exit from fullscreen mode.
1212  bool fullscreen_widget_had_focus_at_shutdown_;
1213
1214  // Maps the ids of pending image downloads to their callbacks
1215  typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1216  ImageDownloadMap image_download_map_;
1217
1218  // Whether this WebContents is responsible for displaying a subframe in a
1219  // different process from its parent page.
1220  bool is_subframe_;
1221
1222  // Whether overscroll should be unconditionally disabled.
1223  bool force_disable_overscroll_content_;
1224
1225  // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1226  bool last_dialog_suppressed_;
1227
1228  scoped_ptr<GeolocationDispatcherHost> geolocation_dispatcher_host_;
1229
1230  scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
1231
1232  scoped_ptr<ScreenOrientationDispatcherHost>
1233      screen_orientation_dispatcher_host_;
1234
1235  scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1236
1237  // The accessibility mode for all frames. This is queried when each frame
1238  // is created, and broadcast to all frames when it changes.
1239  AccessibilityMode accessibility_mode_;
1240
1241  // Monitors power levels for audio streams associated with this WebContents.
1242  AudioStreamMonitor audio_stream_monitor_;
1243
1244  // Created on-demand to mute all audio output from this WebContents.
1245  scoped_ptr<WebContentsAudioMuter> audio_muter_;
1246
1247  base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1248
1249  DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1250};
1251
1252}  // namespace content
1253
1254#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
1255