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  virtual void SetIsVirtualKeyboardRequested(bool requested) OVERRIDE;
490  virtual bool IsVirtualKeyboardRequested() OVERRIDE;
491
492  // NavigatorDelegate ---------------------------------------------------------
493
494  virtual void DidStartProvisionalLoad(
495      RenderFrameHostImpl* render_frame_host,
496      const GURL& validated_url,
497      bool is_error_page,
498      bool is_iframe_srcdoc) OVERRIDE;
499  virtual void DidStartNavigationTransition(
500      RenderFrameHostImpl* render_frame_host) OVERRIDE;
501  virtual void DidFailProvisionalLoadWithError(
502      RenderFrameHostImpl* render_frame_host,
503      const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
504      OVERRIDE;
505  virtual void DidFailLoadWithError(
506      RenderFrameHostImpl* render_frame_host,
507      const GURL& url,
508      int error_code,
509      const base::string16& error_description) OVERRIDE;
510  virtual void DidCommitProvisionalLoad(
511      RenderFrameHostImpl* render_frame_host,
512      const GURL& url,
513      ui::PageTransition transition_type) OVERRIDE;
514  virtual void DidNavigateMainFramePreCommit(
515      bool navigation_is_within_page) OVERRIDE;
516  virtual void DidNavigateMainFramePostCommit(
517      const LoadCommittedDetails& details,
518      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
519  virtual void DidNavigateAnyFramePostCommit(
520      RenderFrameHostImpl* render_frame_host,
521      const LoadCommittedDetails& details,
522      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
523  virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
524  virtual bool CanOverscrollContent() const OVERRIDE;
525  virtual void NotifyChangedNavigationState(
526      InvalidateTypes changed_flags) OVERRIDE;
527  virtual void AboutToNavigateRenderFrame(
528      RenderFrameHostImpl* render_frame_host) OVERRIDE;
529  virtual void DidStartNavigationToPendingEntry(
530      RenderFrameHostImpl* render_frame_host,
531      const GURL& url,
532      NavigationController::ReloadType reload_type) OVERRIDE;
533  virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
534                              const OpenURLParams& params) OVERRIDE;
535  virtual bool ShouldPreserveAbortedURLs() OVERRIDE;
536
537  // RenderWidgetHostDelegate --------------------------------------------------
538
539  virtual void RenderWidgetDeleted(
540      RenderWidgetHostImpl* render_widget_host) OVERRIDE;
541  virtual bool PreHandleKeyboardEvent(
542      const NativeWebKeyboardEvent& event,
543      bool* is_keyboard_shortcut) OVERRIDE;
544  virtual void HandleKeyboardEvent(
545      const NativeWebKeyboardEvent& event) OVERRIDE;
546  virtual bool HandleWheelEvent(
547      const blink::WebMouseWheelEvent& event) OVERRIDE;
548  virtual bool PreHandleGestureEvent(
549      const blink::WebGestureEvent& event) OVERRIDE;
550  virtual bool HandleGestureEvent(
551      const blink::WebGestureEvent& event) OVERRIDE;
552  virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
553  virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager()
554      OVERRIDE;
555  virtual BrowserAccessibilityManager*
556      GetOrCreateRootBrowserAccessibilityManager() OVERRIDE;
557
558  // RenderFrameHostManager::Delegate ------------------------------------------
559
560  virtual bool CreateRenderViewForRenderManager(
561      RenderViewHost* render_view_host,
562      int opener_route_id,
563      int proxy_routing_id,
564      bool for_main_frame_navigation) OVERRIDE;
565  virtual bool CreateRenderFrameForRenderManager(
566      RenderFrameHost* render_frame_host,
567      int parent_routing_id) OVERRIDE;
568  virtual void BeforeUnloadFiredFromRenderManager(
569      bool proceed, const base::TimeTicks& proceed_time,
570      bool* proceed_to_fire_unload) OVERRIDE;
571  virtual void RenderProcessGoneFromRenderManager(
572      RenderViewHost* render_view_host) OVERRIDE;
573  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
574  virtual void CancelModalDialogsForRenderManager() OVERRIDE;
575  virtual void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
576                                              RenderFrameHost* new_host,
577                                              bool is_main_frame) OVERRIDE;
578  virtual int CreateOpenerRenderViewsForRenderManager(
579      SiteInstance* instance) OVERRIDE;
580  virtual NavigationControllerImpl&
581      GetControllerForRenderManager() OVERRIDE;
582  virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
583  virtual NavigationEntry*
584      GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
585  virtual bool FocusLocationBarByDefault() OVERRIDE;
586  virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
587  virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
588  virtual bool IsHidden() OVERRIDE;
589
590  // NotificationObserver ------------------------------------------------------
591
592  virtual void Observe(int type,
593                       const NotificationSource& source,
594                       const NotificationDetails& details) OVERRIDE;
595
596  // NavigationControllerDelegate ----------------------------------------------
597
598  virtual WebContents* GetWebContents() OVERRIDE;
599  virtual void NotifyNavigationEntryCommitted(
600      const LoadCommittedDetails& load_details) OVERRIDE;
601
602  // Invoked before a form repost warning is shown.
603  virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
604
605  // Activate this WebContents and show a form repost warning.
606  virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
607
608  // Whether the initial empty page of this view has been accessed by another
609  // page, making it unsafe to show the pending URL. Always false after the
610  // first commit.
611  virtual bool HasAccessedInitialDocument() OVERRIDE;
612
613  // Updates the max page ID for the current SiteInstance in this
614  // WebContentsImpl to be at least |page_id|.
615  virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
616
617  // Updates the max page ID for the given SiteInstance in this WebContentsImpl
618  // to be at least |page_id|.
619  virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
620                                              int32 page_id) OVERRIDE;
621
622  // Copy the current map of SiteInstance ID to max page ID from another tab.
623  // This is necessary when this tab adopts the NavigationEntries from
624  // |web_contents|.
625  virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
626
627  // Called by the NavigationController to cause the WebContentsImpl to navigate
628  // to the current pending entry. The NavigationController should be called
629  // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
630  // The callbacks can be inside of this function, or at some future time.
631  //
632  // The entry has a PageID of -1 if newly created (corresponding to navigation
633  // to a new URL).
634  //
635  // If this method returns false, then the navigation is discarded (equivalent
636  // to calling DiscardPendingEntry on the NavigationController).
637  virtual bool NavigateToPendingEntry(
638      NavigationController::ReloadType reload_type) OVERRIDE;
639
640  // Sets the history for this WebContentsImpl to |history_length| entries, and
641  // moves the current page_id to the last entry in the list if it's valid.
642  // This is mainly used when a prerendered page is swapped into the current
643  // tab. The method is virtual for testing.
644  virtual void SetHistoryLengthAndPrune(
645      const SiteInstance* site_instance,
646      int merge_history_length,
647      int32 minimum_page_id) OVERRIDE;
648
649  // Called by InterstitialPageImpl when it creates a RenderFrameHost.
650  virtual void RenderFrameForInterstitialPageCreated(
651      RenderFrameHost* render_frame_host) OVERRIDE;
652
653  // Sets the passed interstitial as the currently showing interstitial.
654  // No interstitial page should already be attached.
655  virtual void AttachInterstitialPage(
656      InterstitialPageImpl* interstitial_page) OVERRIDE;
657
658  // Unsets the currently showing interstitial.
659  virtual void DetachInterstitialPage() OVERRIDE;
660
661  // Changes the IsLoading state and notifies the delegate as needed.
662  // |details| is used to provide details on the load that just finished
663  // (but can be null if not applicable).
664  virtual void SetIsLoading(RenderViewHost* render_view_host,
665                            bool is_loading,
666                            bool to_different_document,
667                            LoadNotificationDetails* details) OVERRIDE;
668
669  typedef base::Callback<void(WebContents*)> CreatedCallback;
670
671  // Requests the renderer to select the region between two points in the
672  // currently focused frame.
673  void SelectRange(const gfx::Point& start, const gfx::Point& end);
674
675  // Notifies the main frame that it can continue navigation (if it was deferred
676  // immediately at first response).
677  void ResumeResponseDeferredAtStart();
678
679  // Forces overscroll to be disabled (used by touch emulation).
680  void SetForceDisableOverscrollContent(bool force_disable);
681
682  AudioStreamMonitor* audio_stream_monitor() {
683    return &audio_stream_monitor_;
684  }
685
686  bool has_audio_power_save_blocker_for_testing() const {
687    return audio_power_save_blocker_;
688  }
689
690  bool has_video_power_save_blocker_for_testing() const {
691    return video_power_save_blocker_;
692  }
693
694 private:
695  friend class TestNavigationObserver;
696  friend class WebContentsAddedObserver;
697  friend class WebContentsObserver;
698  friend class WebContents;  // To implement factory methods.
699
700  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
701  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
702  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
703  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
704                           CrossSiteCantPreemptAfterUnload);
705  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
706  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
707  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
708  FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
709  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
710  FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
711  FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
712  FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
713                           CrossSiteIframeAccessibility);
714
715  // So InterstitialPageImpl can access SetIsLoading.
716  friend class InterstitialPageImpl;
717
718  // TODO(brettw) TestWebContents shouldn't exist!
719  friend class TestWebContents;
720
721  class DestructionObserver;
722
723  // See WebContents::Create for a description of these parameters.
724  WebContentsImpl(BrowserContext* browser_context,
725                  WebContentsImpl* opener);
726
727  // Add and remove observers for page navigation notifications. The order in
728  // which notifications are sent to observers is undefined. Clients must be
729  // sure to remove the observer before they go away.
730  void AddObserver(WebContentsObserver* observer);
731  void RemoveObserver(WebContentsObserver* observer);
732
733  // Clears this tab's opener if it has been closed.
734  void OnWebContentsDestroyed(WebContentsImpl* web_contents);
735
736  // Creates and adds to the map a destruction observer watching |web_contents|.
737  // No-op if such an observer already exists.
738  void AddDestructionObserver(WebContentsImpl* web_contents);
739
740  // Deletes and removes from the map a destruction observer
741  // watching |web_contents|. No-op if there is no such observer.
742  void RemoveDestructionObserver(WebContentsImpl* web_contents);
743
744  // Traverses all the RenderFrameHosts in the FrameTree and creates a set
745  // all the unique RenderWidgetHostViews.
746  std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
747
748  // Callback function when showing JavaScript dialogs.  Takes in a routing ID
749  // pair to identify the RenderFrameHost that opened the dialog, because it's
750  // possible for the RenderFrameHost to be deleted by the time this is called.
751  void OnDialogClosed(int render_process_id,
752                      int render_frame_id,
753                      IPC::Message* reply_msg,
754                      bool dialog_was_suppressed,
755                      bool success,
756                      const base::string16& user_input);
757
758  // Callback function when requesting permission to access the PPAPI broker.
759  // |result| is true if permission was granted.
760  void OnPpapiBrokerPermissionResult(int routing_id, bool result);
761
762  bool OnMessageReceived(RenderViewHost* render_view_host,
763                         RenderFrameHost* render_frame_host,
764                         const IPC::Message& message);
765
766  // IPC message handlers.
767  void OnThemeColorChanged(SkColor theme_color);
768  void OnDidLoadResourceFromMemoryCache(const GURL& url,
769                                        const std::string& security_info,
770                                        const std::string& http_request,
771                                        const std::string& mime_type,
772                                        ResourceType resource_type);
773  void OnDidDisplayInsecureContent();
774  void OnDidRunInsecureContent(const std::string& security_origin,
775                               const GURL& target_url);
776  void OnDocumentLoadedInFrame();
777  void OnDidFinishLoad(const GURL& url);
778  void OnDidStartLoading(bool to_different_document);
779  void OnDidStopLoading();
780  void OnDidChangeLoadProgress(double load_progress);
781  void OnGoToEntryAtOffset(int offset);
782  void OnUpdateZoomLimits(int minimum_percent,
783                          int maximum_percent);
784  void OnEnumerateDirectory(int request_id, const base::FilePath& path);
785
786  void OnRegisterProtocolHandler(const std::string& protocol,
787                                 const GURL& url,
788                                 const base::string16& title,
789                                 bool user_gesture);
790  void OnUnregisterProtocolHandler(const std::string& protocol,
791                                   const GURL& url,
792                                   bool user_gesture);
793  void OnFindReply(int request_id,
794                   int number_of_matches,
795                   const gfx::Rect& selection_rect,
796                   int active_match_ordinal,
797                   bool final_update);
798#if defined(OS_ANDROID)
799  void OnFindMatchRectsReply(int version,
800                             const std::vector<gfx::RectF>& rects,
801                             const gfx::RectF& active_rect);
802
803  void OnOpenDateTimeDialog(
804      const ViewHostMsg_DateTimeDialogValue_Params& value);
805#endif
806  void OnPepperPluginHung(int plugin_child_id,
807                          const base::FilePath& path,
808                          bool is_hung);
809  void OnPluginCrashed(const base::FilePath& plugin_path,
810                       base::ProcessId plugin_pid);
811  void OnDomOperationResponse(const std::string& json_string,
812                              int automation_id);
813  void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
814  void OnOpenColorChooser(int color_chooser_id,
815                          SkColor color,
816                          const std::vector<ColorSuggestion>& suggestions);
817  void OnEndColorChooser(int color_chooser_id);
818  void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
819  void OnWebUISend(const GURL& source_url,
820                   const std::string& name,
821                   const base::ListValue& args);
822  void OnRequestPpapiBrokerPermission(int routing_id,
823                                      const GURL& url,
824                                      const base::FilePath& plugin_path);
825  void OnBrowserPluginMessage(const IPC::Message& message);
826  void OnDidDownloadImage(int id,
827                          int http_status_code,
828                          const GURL& image_url,
829                          const std::vector<SkBitmap>& bitmaps,
830                          const std::vector<gfx::Size>& original_bitmap_sizes);
831  void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
832  void OnFirstVisuallyNonEmptyPaint();
833  void OnMediaPlayingNotification(int64 player_cookie,
834                                  bool has_video,
835                                  bool has_audio,
836                                  bool is_remote);
837  void OnMediaPausedNotification(int64 player_cookie);
838  void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
839                               const base::string16& main_text,
840                               const base::string16& sub_text);
841  void OnHideValidationMessage();
842  void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
843
844  // Called by derived classes to indicate that we're no longer waiting for a
845  // response. This won't actually update the throbber, but it will get picked
846  // up at the next animation step if the throbber is going.
847  void SetNotWaitingForResponse() { waiting_for_response_ = false; }
848
849  // Navigation helpers --------------------------------------------------------
850  //
851  // These functions are helpers for Navigate() and DidNavigate().
852
853  // Handles post-navigation tasks in DidNavigate AFTER the entry has been
854  // committed to the navigation controller. Note that the navigation entry is
855  // not provided since it may be invalid/changed after being committed. The
856  // current navigation entry is in the NavigationController at this point.
857
858  // If our controller was restored, update the max page ID associated with the
859  // given RenderViewHost to be larger than the number of restored entries.
860  // This is called in CreateRenderView before any navigations in the RenderView
861  // have begun, to prevent any races in updating RenderView::next_page_id.
862  void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
863
864  // Saves the given title to the navigation entry and does associated work. It
865  // will update history and the view for the new title, and also synthesize
866  // titles for file URLs that have none (so we require that the URL of the
867  // entry already be set).
868  //
869  // This is used as the backend for state updates, which include a new title,
870  // or the dedicated set title message. It returns true if the new title is
871  // different and was therefore updated.
872  bool UpdateTitleForEntry(NavigationEntryImpl* entry,
873                           const base::string16& title);
874
875  // Recursively creates swapped out RenderViews for this tab's opener chain
876  // (including this tab) in the given SiteInstance, allowing other tabs to send
877  // cross-process JavaScript calls to their opener(s).  Returns the route ID of
878  // this tab's RenderView for |instance|.
879  int CreateOpenerRenderViews(SiteInstance* instance);
880
881  // Helper for CreateNewWidget/CreateNewFullscreenWidget.
882  void CreateNewWidget(int render_process_id,
883                       int route_id,
884                       bool is_fullscreen,
885                       blink::WebPopupType popup_type);
886
887  // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
888  void ShowCreatedWidget(int route_id,
889                         bool is_fullscreen,
890                         const gfx::Rect& initial_pos);
891
892  // Finds the new RenderWidgetHost and returns it. Note that this can only be
893  // called once as this call also removes it from the internal map.
894  RenderWidgetHostView* GetCreatedWidget(int route_id);
895
896  // Finds the new WebContentsImpl by route_id, initializes it for
897  // renderer-initiated creation, and returns it. Note that this can only be
898  // called once as this call also removes it from the internal map.
899  WebContentsImpl* GetCreatedWindow(int route_id);
900
901  // Tracking loading progress -------------------------------------------------
902
903  // Resets the tracking state of the current load.
904  void ResetLoadProgressState();
905
906  // Calculates the progress of the current load and notifies the delegate.
907  void SendLoadProgressChanged();
908
909  // Called once when the last frame on the page has stopped loading.
910  void DidStopLoading(RenderFrameHost* render_frame_host);
911
912  // Misc non-view stuff -------------------------------------------------------
913
914  // Helper functions for sending notifications.
915  void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
916  void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
917  void NotifyDisconnected();
918
919  void SetEncoding(const std::string& encoding);
920
921  // TODO(creis): This should take in a FrameTreeNode to know which node's
922  // render manager to return.  For now, we just return the root's.
923  RenderFrameHostManager* GetRenderManager() const;
924
925  RenderViewHostImpl* GetRenderViewHostImpl();
926
927  // Removes browser plugin embedder if there is one.
928  void RemoveBrowserPluginEmbedder();
929
930  // Clear |render_frame_host|'s tracking entry for its power save blockers.
931  void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
932
933  // Clear tracking entries for all RenderFrameHosts, clears
934  // |audio_power_save_blocker_| and |video_power_save_blocker_|.
935  void ClearAllPowerSaveBlockers();
936
937  // Creates an audio or video power save blocker respectively.
938  void CreateAudioPowerSaveBlocker();
939  void CreateVideoPowerSaveBlocker();
940
941  // Releases the audio power save blockers if |active_audio_players_| is empty.
942  // Likewise, releases the video power save blockers if |active_video_players_|
943  // is empty.
944  void MaybeReleasePowerSaveBlockers();
945
946  // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
947  gfx::Size GetSizeForNewRenderView();
948
949  void OnFrameRemoved(RenderFrameHost* render_frame_host);
950
951  // Helper method that's called whenever |preferred_size_| or
952  // |preferred_size_for_capture_| changes, to propagate the new value to the
953  // |delegate_|.
954  void OnPreferredSizeChanged(const gfx::Size& old_size);
955
956  // Helper methods for adding or removing player entries in |player_map| under
957  // the key |render_frame_message_source_|.
958  typedef std::vector<int64> PlayerList;
959  typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
960  void AddMediaPlayerEntry(int64 player_cookie,
961                           ActiveMediaPlayerMap* player_map);
962  void RemoveMediaPlayerEntry(int64 player_cookie,
963                              ActiveMediaPlayerMap* player_map);
964  // Removes all entries from |player_map| for |render_frame_host|.
965  void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
966                                   ActiveMediaPlayerMap* player_map);
967
968  // Adds/removes a callback called on creation of each new WebContents.
969  // Deprecated, about to remove.
970  static void AddCreatedCallback(const CreatedCallback& callback);
971  static void RemoveCreatedCallback(const CreatedCallback& callback);
972
973  // Data for core operation ---------------------------------------------------
974
975  // Delegate for notifying our owner about stuff. Not owned by us.
976  WebContentsDelegate* delegate_;
977
978  // Handles the back/forward list and loading.
979  NavigationControllerImpl controller_;
980
981  // The corresponding view.
982  scoped_ptr<WebContentsView> view_;
983
984  // The view of the RVHD. Usually this is our WebContentsView implementation,
985  // but if an embedder uses a different WebContentsView, they'll need to
986  // provide this.
987  RenderViewHostDelegateView* render_view_host_delegate_view_;
988
989  // Tracks created WebContentsImpl objects that have not been shown yet. They
990  // are identified by the route ID passed to CreateNewWindow.
991  typedef std::map<int, WebContentsImpl*> PendingContents;
992  PendingContents pending_contents_;
993
994  // These maps hold on to the widgets that we created on behalf of the renderer
995  // that haven't shown yet.
996  typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
997  PendingWidgetViews pending_widget_views_;
998
999  typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
1000  DestructionObservers destruction_observers_;
1001
1002  // A list of observers notified when page state changes. Weak references.
1003  // This MUST be listed above frame_tree_ since at destruction time the
1004  // latter might cause RenderViewHost's destructor to call us and we might use
1005  // the observer list then.
1006  ObserverList<WebContentsObserver> observers_;
1007
1008  // The tab that opened this tab, if any.  Will be set to null if the opener
1009  // is closed.
1010  WebContentsImpl* opener_;
1011
1012  // True if this tab was opened by another tab. This is not unset if the opener
1013  // is closed.
1014  bool created_with_opener_;
1015
1016#if defined(OS_WIN)
1017  gfx::NativeViewAccessible accessible_parent_;
1018#endif
1019
1020  // Helper classes ------------------------------------------------------------
1021
1022  // Tracking variables and associated power save blockers for media playback.
1023  ActiveMediaPlayerMap active_audio_players_;
1024  ActiveMediaPlayerMap active_video_players_;
1025  scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1026  scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1027
1028  // Manages the frame tree of the page and process swaps in each node.
1029  FrameTree frame_tree_;
1030
1031  // SavePackage, lazily created.
1032  scoped_refptr<SavePackage> save_package_;
1033
1034  // Data for loading state ----------------------------------------------------
1035
1036  // Indicates whether we're currently loading a resource.
1037  bool is_loading_;
1038
1039  // Indicates whether the current load is to a different document. Only valid
1040  // if is_loading_ is true.
1041  bool is_load_to_different_document_;
1042
1043  // Indicates if the tab is considered crashed.
1044  base::TerminationStatus crashed_status_;
1045  int crashed_error_code_;
1046
1047  // Whether this WebContents is waiting for a first-response for the
1048  // main resource of the page. This controls whether the throbber state is
1049  // "waiting" or "loading."
1050  bool waiting_for_response_;
1051
1052  // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1053  // to a given tab and SiteInstance, and must be valid for the lifetime of the
1054  // WebContentsImpl.
1055  std::map<int32, int32> max_page_ids_;
1056
1057  // The current load state and the URL associated with it.
1058  net::LoadStateWithParam load_state_;
1059  base::string16 load_state_host_;
1060
1061  // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
1062  // frame's completion (from 0 to 1).
1063  typedef base::hash_map<int64, double> LoadingProgressMap;
1064  LoadingProgressMap loading_progresses_;
1065  double loading_total_progress_;
1066
1067  base::TimeTicks loading_last_progress_update_;
1068
1069  // Counter to track how many frames have sent start notifications but not
1070  // stop notifications.
1071  int loading_frames_in_progress_;
1072
1073  // Upload progress, for displaying in the status bar.
1074  // Set to zero when there is no significant upload happening.
1075  uint64 upload_size_;
1076  uint64 upload_position_;
1077
1078  // Data for current page -----------------------------------------------------
1079
1080  // When a title cannot be taken from any entry, this title will be used.
1081  base::string16 page_title_when_no_navigation_entry_;
1082
1083  // When a navigation occurs, we record its contents MIME type. It can be
1084  // used to check whether we can do something for some special contents.
1085  std::string contents_mime_type_;
1086
1087  // The last reported character encoding, not canonicalized.
1088  std::string last_reported_encoding_;
1089
1090  // The canonicalized character encoding.
1091  std::string canonical_encoding_;
1092
1093  // True if this is a secure page which displayed insecure content.
1094  bool displayed_insecure_content_;
1095
1096  // Whether the initial empty page has been accessed by another page, making it
1097  // unsafe to show the pending URL. Usually false unless another window tries
1098  // to modify the blank page.  Always false after the first commit.
1099  bool has_accessed_initial_document_;
1100
1101  // Data for misc internal state ----------------------------------------------
1102
1103  // When > 0, the WebContents is currently being captured (e.g., for
1104  // screenshots or mirroring); and the underlying RenderWidgetHost should not
1105  // be told it is hidden.
1106  int capturer_count_;
1107
1108  // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1109  bool should_normally_be_visible_;
1110
1111  // See getter above.
1112  bool is_being_destroyed_;
1113
1114  // Indicates whether we should notify about disconnection of this
1115  // WebContentsImpl. This is used to ensure disconnection notifications only
1116  // happen if a connection notification has happened and that they happen only
1117  // once.
1118  bool notify_disconnection_;
1119
1120  // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1121  // delegate of this WebContentsImpl is nulled before its destructor is called.
1122  JavaScriptDialogManager* dialog_manager_;
1123
1124  // Set to true when there is an active "before unload" dialog.  When true,
1125  // we've forced the throbber to start in Navigate, and we need to remember to
1126  // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1127  bool is_showing_before_unload_dialog_;
1128
1129  // Settings that get passed to the renderer process.
1130  RendererPreferences renderer_preferences_;
1131
1132  // The time that this WebContents was last made active. The initial value is
1133  // the WebContents creation time.
1134  base::TimeTicks last_active_time_;
1135
1136  // See description above setter.
1137  bool closed_by_user_gesture_;
1138
1139  // Minimum/maximum zoom percent.
1140  int minimum_zoom_percent_;
1141  int maximum_zoom_percent_;
1142
1143  // The raw accumulated zoom value and the actual zoom increments made for an
1144  // an in-progress pinch gesture.
1145  float totalPinchGestureAmount_;
1146  int currentPinchZoomStepDelta_;
1147
1148  // The intrinsic size of the page.
1149  gfx::Size preferred_size_;
1150
1151  // The preferred size for content screen capture.  When |capturer_count_| > 0,
1152  // this overrides |preferred_size_|.
1153  gfx::Size preferred_size_for_capture_;
1154
1155#if defined(OS_ANDROID)
1156  // Date time chooser opened by this tab.
1157  // Only used in Android since all other platforms use a multi field UI.
1158  scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1159#endif
1160
1161  // Holds information about a current color chooser dialog, if one is visible.
1162  struct ColorChooserInfo {
1163    ColorChooserInfo(int render_process_id,
1164                     int render_frame_id,
1165                     ColorChooser* chooser,
1166                     int identifier);
1167    ~ColorChooserInfo();
1168
1169    int render_process_id;
1170    int render_frame_id;
1171
1172    // Color chooser that was opened by this tab.
1173    scoped_ptr<ColorChooser> chooser;
1174
1175    // A unique identifier for the current color chooser.  Identifiers are
1176    // unique across a renderer process.  This avoids race conditions in
1177    // synchronizing the browser and renderer processes.  For example, if a
1178    // renderer closes one chooser and opens another, and simultaneously the
1179    // user picks a color in the first chooser, the IDs can be used to drop the
1180    // "chose a color" message rather than erroneously tell the renderer that
1181    // the user picked a color in the second chooser.
1182    int identifier;
1183  };
1184
1185  scoped_ptr<ColorChooserInfo> color_chooser_info_;
1186
1187  // Manages the embedder state for browser plugins, if this WebContents is an
1188  // embedder; NULL otherwise.
1189  scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1190  // Manages the guest state for browser plugin, if this WebContents is a guest;
1191  // NULL otherwise.
1192  scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1193
1194  // This must be at the end, or else we might get notifications and use other
1195  // member variables that are gone.
1196  NotificationRegistrar registrar_;
1197
1198  // Used during IPC message dispatching from the RenderView/RenderFrame so that
1199  // the handlers can get a pointer to the RVH through which the message was
1200  // received.
1201  RenderViewHost* render_view_message_source_;
1202  RenderFrameHost* render_frame_message_source_;
1203
1204  // All live RenderWidgetHostImpls that are created by this object and may
1205  // outlive it.
1206  std::set<RenderWidgetHostImpl*> created_widgets_;
1207
1208  // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1209  int fullscreen_widget_routing_id_;
1210
1211  // At the time the fullscreen widget was being shut down, did it have focus?
1212  // This is used to restore focus to the WebContentsView after both: 1) the
1213  // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1214  // completed making layout changes to effect an exit from fullscreen mode.
1215  bool fullscreen_widget_had_focus_at_shutdown_;
1216
1217  // Maps the ids of pending image downloads to their callbacks
1218  typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1219  ImageDownloadMap image_download_map_;
1220
1221  // Whether this WebContents is responsible for displaying a subframe in a
1222  // different process from its parent page.
1223  bool is_subframe_;
1224
1225  // Whether overscroll should be unconditionally disabled.
1226  bool force_disable_overscroll_content_;
1227
1228  // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1229  bool last_dialog_suppressed_;
1230
1231  scoped_ptr<GeolocationDispatcherHost> geolocation_dispatcher_host_;
1232
1233  scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
1234
1235  scoped_ptr<ScreenOrientationDispatcherHost>
1236      screen_orientation_dispatcher_host_;
1237
1238  scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1239
1240  // The accessibility mode for all frames. This is queried when each frame
1241  // is created, and broadcast to all frames when it changes.
1242  AccessibilityMode accessibility_mode_;
1243
1244  // Monitors power levels for audio streams associated with this WebContents.
1245  AudioStreamMonitor audio_stream_monitor_;
1246
1247  // Created on-demand to mute all audio output from this WebContents.
1248  scoped_ptr<WebContentsAudioMuter> audio_muter_;
1249
1250  base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1251
1252  bool virtual_keyboard_requested_;
1253
1254  DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1255};
1256
1257}  // namespace content
1258
1259#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
1260