web_contents_impl.h revision 5f1c94371a64b3196d4be9466099bb892df9b88e 
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/gtest_prod_util.h"
14#include "base/memory/scoped_ptr.h"
15#include "base/observer_list.h"
16#include "base/process/process.h"
17#include "base/values.h"
18#include "content/browser/frame_host/frame_tree.h"
19#include "content/browser/frame_host/navigation_controller_delegate.h"
20#include "content/browser/frame_host/navigation_controller_impl.h"
21#include "content/browser/frame_host/navigator_delegate.h"
22#include "content/browser/frame_host/render_frame_host_delegate.h"
23#include "content/browser/frame_host/render_frame_host_manager.h"
24#include "content/browser/renderer_host/render_view_host_delegate.h"
25#include "content/browser/renderer_host/render_widget_host_delegate.h"
26#include "content/common/accessibility_mode_enums.h"
27#include "content/common/content_export.h"
28#include "content/public/browser/color_chooser.h"
29#include "content/public/browser/notification_observer.h"
30#include "content/public/browser/notification_registrar.h"
31#include "content/public/browser/web_contents.h"
32#include "content/public/common/page_transition_types.h"
33#include "content/public/common/renderer_preferences.h"
34#include "content/public/common/resource_type.h"
35#include "content/public/common/three_d_api_types.h"
36#include "net/base/load_states.h"
37#include "net/http/http_response_headers.h"
38#include "third_party/WebKit/public/web/WebDragOperation.h"
39#include "ui/gfx/rect_f.h"
40#include "ui/gfx/size.h"
41
42struct BrowserPluginHostMsg_ResizeGuest_Params;
43struct ViewHostMsg_DateTimeDialogValue_Params;
44struct ViewMsg_PostMessage_Params;
45
46namespace content {
47class BrowserPluginEmbedder;
48class BrowserPluginGuest;
49class BrowserPluginGuestManager;
50class DateTimeChooserAndroid;
51class DownloadItem;
52class GeolocationDispatcherHost;
53class InterstitialPageImpl;
54class JavaScriptDialogManager;
55class MidiDispatcherHost;
56class PowerSaveBlocker;
57class RenderViewHost;
58class RenderViewHostDelegateView;
59class RenderViewHostImpl;
60class RenderWidgetHostImpl;
61class SavePackage;
62class ScreenOrientationDispatcherHost;
63class SiteInstance;
64class TestWebContents;
65class WebContentsDelegate;
66class WebContentsImpl;
67class WebContentsObserver;
68class WebContentsView;
69class WebContentsViewDelegate;
70struct AXEventNotificationDetails;
71struct ColorSuggestion;
72struct FaviconURL;
73struct LoadNotificationDetails;
74struct ResourceRedirectDetails;
75struct ResourceRequestDetails;
76
77// Factory function for the implementations that content knows about. Takes
78// ownership of |delegate|.
79WebContentsView* CreateWebContentsView(
80    WebContentsImpl* web_contents,
81    WebContentsViewDelegate* delegate,
82    RenderViewHostDelegateView** render_view_host_delegate_view);
83
84class CONTENT_EXPORT WebContentsImpl
85    : public NON_EXPORTED_BASE(WebContents),
86      public NON_EXPORTED_BASE(RenderFrameHostDelegate),
87      public RenderViewHostDelegate,
88      public RenderWidgetHostDelegate,
89      public RenderFrameHostManager::Delegate,
90      public NotificationObserver,
91      public NON_EXPORTED_BASE(NavigationControllerDelegate),
92      public NON_EXPORTED_BASE(NavigatorDelegate) {
93 public:
94  virtual ~WebContentsImpl();
95
96  static WebContentsImpl* CreateWithOpener(
97      const WebContents::CreateParams& params,
98      WebContentsImpl* opener);
99
100  static std::vector<WebContentsImpl*> GetAllWebContents();
101
102  // Returns the opener WebContentsImpl, if any. This can be set to null if the
103  // opener is closed or the page clears its window.opener.
104  WebContentsImpl* opener() const { return opener_; }
105
106  // Creates a swapped out RenderView. This is used by the browser plugin to
107  // create a swapped out RenderView in the embedder render process for the
108  // guest, to expose the guest's window object to the embedder.
109  // This returns the routing ID of the newly created swapped out RenderView.
110  int CreateSwappedOutRenderView(SiteInstance* instance);
111
112  // Complex initialization here. Specifically needed to avoid having
113  // members call back into our virtual functions in the constructor.
114  virtual void Init(const WebContents::CreateParams& params);
115
116  // Returns the SavePackage which manages the page saving job. May be NULL.
117  SavePackage* save_package() const { return save_package_.get(); }
118
119#if defined(OS_ANDROID)
120  // In Android WebView, the RenderView needs created even there is no
121  // navigation entry, this allows Android WebViews to use
122  // javascript: URLs that load into the DOMWindow before the first page
123  // load. This is not safe to do in any context that a web page could get a
124  // reference to the DOMWindow before the first page load.
125  bool CreateRenderViewForInitialEmptyDocument();
126#endif
127
128  // Expose the render manager for testing.
129  // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
130  RenderFrameHostManager* GetRenderManagerForTesting();
131
132  // Returns guest browser plugin object, or NULL if this WebContents is not a
133  // guest.
134  BrowserPluginGuest* GetBrowserPluginGuest() const;
135
136  // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
137  // has a BrowserPluginGuest then that implies that it is being hosted by
138  // a BrowserPlugin object in an embedder renderer process.
139  void SetBrowserPluginGuest(BrowserPluginGuest* guest);
140
141  // Returns embedder browser plugin object, or NULL if this WebContents is not
142  // an embedder.
143  BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
144
145  // Gets the current fullscreen render widget's routing ID. Returns
146  // MSG_ROUTING_NONE when there is no fullscreen render widget.
147  int GetFullscreenWidgetRoutingID() const;
148
149  // Invoked when visible SSL state (as defined by SSLStatus) changes.
150  void DidChangeVisibleSSLState();
151
152  // Informs the render view host and the BrowserPluginEmbedder, if present, of
153  // a Drag Source End.
154  void DragSourceEndedAt(int client_x, int client_y, int screen_x,
155      int screen_y, blink::WebDragOperation operation);
156
157  // A response has been received for a resource request.
158  void DidGetResourceResponseStart(
159      const ResourceRequestDetails& details);
160
161  // A redirect was received while requesting a resource.
162  void DidGetRedirectForResourceRequest(
163      RenderViewHost* render_view_host,
164      const ResourceRedirectDetails& details);
165
166  WebContentsView* GetView() const;
167
168  GeolocationDispatcherHost* geolocation_dispatcher_host() {
169    return geolocation_dispatcher_host_.get();
170  }
171
172  ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
173    return screen_orientation_dispatcher_host_.get();
174  }
175
176  bool should_normally_be_visible() { return should_normally_be_visible_; }
177
178  // Broadcasts the mode change to all frames.
179  void SetAccessibilityMode(AccessibilityMode mode);
180
181  // Adds the given accessibility mode to the current accessibility mode
182  // bitmap.
183  void AddAccessibilityMode(AccessibilityMode mode);
184
185  // Removes the given accessibility mode from the current accessibility
186  // mode bitmap, managing the bits that are shared with other modes such
187  // that a bit will only be turned off when all modes that depend on it
188  // have been removed.
189  void RemoveAccessibilityMode(AccessibilityMode mode);
190
191  // WebContents ------------------------------------------------------
192  virtual WebContentsDelegate* GetDelegate() OVERRIDE;
193  virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
194  virtual NavigationControllerImpl& GetController() OVERRIDE;
195  virtual const NavigationControllerImpl& GetController() const OVERRIDE;
196  virtual BrowserContext* GetBrowserContext() const OVERRIDE;
197  virtual const GURL& GetURL() const OVERRIDE;
198  virtual const GURL& GetVisibleURL() const OVERRIDE;
199  virtual const GURL& GetLastCommittedURL() const OVERRIDE;
200  virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
201  virtual RenderFrameHost* GetMainFrame() OVERRIDE;
202  virtual RenderFrameHost* GetFocusedFrame() OVERRIDE;
203  virtual void ForEachFrame(
204      const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
205  virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
206  virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
207  virtual int GetRoutingID() const OVERRIDE;
208  virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE;
209  virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const
210      OVERRIDE;
211  virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE;
212  virtual WebUI* GetWebUI() const OVERRIDE;
213  virtual WebUI* GetCommittedWebUI() const OVERRIDE;
214  virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;
215  virtual const std::string& GetUserAgentOverride() const OVERRIDE;
216  virtual void EnableTreeOnlyAccessibilityMode() OVERRIDE;
217  virtual bool IsTreeOnlyAccessibilityModeForTesting() const OVERRIDE;
218  virtual bool IsFullAccessibilityModeForTesting() const OVERRIDE;
219#if defined(OS_WIN)
220  virtual void SetParentNativeViewAccessible(
221      gfx::NativeViewAccessible accessible_parent) OVERRIDE;
222#endif
223  virtual const base::string16& GetTitle() const OVERRIDE;
224  virtual int32 GetMaxPageID() OVERRIDE;
225  virtual int32 GetMaxPageIDForSiteInstance(
226      SiteInstance* site_instance) OVERRIDE;
227  virtual SiteInstance* GetSiteInstance() const OVERRIDE;
228  virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE;
229  virtual bool IsLoading() const OVERRIDE;
230  virtual bool IsLoadingToDifferentDocument() const OVERRIDE;
231  virtual bool IsWaitingForResponse() const OVERRIDE;
232  virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
233  virtual const base::string16& GetLoadStateHost() const OVERRIDE;
234  virtual uint64 GetUploadSize() const OVERRIDE;
235  virtual uint64 GetUploadPosition() const OVERRIDE;
236  virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
237  virtual const std::string& GetEncoding() const OVERRIDE;
238  virtual bool DisplayedInsecureContent() const OVERRIDE;
239  virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
240  virtual void DecrementCapturerCount() OVERRIDE;
241  virtual int GetCapturerCount() const OVERRIDE;
242  virtual bool IsCrashed() const OVERRIDE;
243  virtual void SetIsCrashed(base::TerminationStatus status,
244                            int error_code) OVERRIDE;
245  virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
246  virtual bool IsBeingDestroyed() const OVERRIDE;
247  virtual void NotifyNavigationStateChanged(unsigned changed_flags) OVERRIDE;
248  virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
249  virtual void WasShown() OVERRIDE;
250  virtual void WasHidden() OVERRIDE;
251  virtual bool NeedToFireBeforeUnload() OVERRIDE;
252  virtual void DispatchBeforeUnload(bool for_cross_site_transition) OVERRIDE;
253  virtual void Stop() OVERRIDE;
254  virtual WebContents* Clone() OVERRIDE;
255  virtual void ReloadFocusedFrame(bool ignore_cache) OVERRIDE;
256  virtual void Undo() OVERRIDE;
257  virtual void Redo() OVERRIDE;
258  virtual void Cut() OVERRIDE;
259  virtual void Copy() OVERRIDE;
260  virtual void CopyToFindPboard() OVERRIDE;
261  virtual void Paste() OVERRIDE;
262  virtual void PasteAndMatchStyle() OVERRIDE;
263  virtual void Delete() OVERRIDE;
264  virtual void SelectAll() OVERRIDE;
265  virtual void Unselect() OVERRIDE;
266  virtual void Replace(const base::string16& word) OVERRIDE;
267  virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE;
268  virtual void NotifyContextMenuClosed(
269      const CustomContextMenuContext& context) OVERRIDE;
270  virtual void ExecuteCustomContextMenuCommand(
271      int action, const CustomContextMenuContext& context) OVERRIDE;
272  virtual gfx::NativeView GetNativeView() OVERRIDE;
273  virtual gfx::NativeView GetContentNativeView() OVERRIDE;
274  virtual gfx::NativeWindow GetTopLevelNativeWindow() OVERRIDE;
275  virtual gfx::Rect GetContainerBounds() OVERRIDE;
276  virtual gfx::Rect GetViewBounds() OVERRIDE;
277  virtual DropData* GetDropData() OVERRIDE;
278  virtual void Focus() OVERRIDE;
279  virtual void SetInitialFocus() OVERRIDE;
280  virtual void StoreFocus() OVERRIDE;
281  virtual void RestoreFocus() OVERRIDE;
282  virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
283  virtual bool ShowingInterstitialPage() const OVERRIDE;
284  virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
285  virtual bool IsSavable() OVERRIDE;
286  virtual void OnSavePage() OVERRIDE;
287  virtual bool SavePage(const base::FilePath& main_file,
288                        const base::FilePath& dir_path,
289                        SavePageType save_type) OVERRIDE;
290  virtual void SaveFrame(const GURL& url,
291                         const Referrer& referrer) OVERRIDE;
292  virtual void GenerateMHTML(
293      const base::FilePath& file,
294      const base::Callback<void(int64)>& callback)
295          OVERRIDE;
296  virtual const std::string& GetContentsMimeType() const OVERRIDE;
297  virtual bool WillNotifyDisconnection() const OVERRIDE;
298  virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
299  virtual void ResetOverrideEncoding() OVERRIDE;
300  virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
301  virtual void Close() OVERRIDE;
302  virtual void SystemDragEnded() OVERRIDE;
303  virtual void UserGestureDone() OVERRIDE;
304  virtual void SetClosedByUserGesture(bool value) OVERRIDE;
305  virtual bool GetClosedByUserGesture() const OVERRIDE;
306  virtual void ViewSource() OVERRIDE;
307  virtual void ViewFrameSource(const GURL& url,
308                               const PageState& page_state) OVERRIDE;
309  virtual int GetMinimumZoomPercent() const OVERRIDE;
310  virtual int GetMaximumZoomPercent() const OVERRIDE;
311  virtual gfx::Size GetPreferredSize() const OVERRIDE;
312  virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
313  virtual bool HasOpener() const OVERRIDE;
314  virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
315  virtual void DidEndColorChooser() OVERRIDE;
316  virtual int DownloadImage(const GURL& url,
317                            bool is_favicon,
318                            uint32_t max_bitmap_size,
319                            const ImageDownloadCallback& callback) OVERRIDE;
320  virtual bool IsSubframe() const OVERRIDE;
321  virtual void Find(int request_id,
322                    const base::string16& search_text,
323                    const blink::WebFindOptions& options) OVERRIDE;
324  virtual void StopFinding(StopFindAction action) OVERRIDE;
325  virtual void InsertCSS(const std::string& css) OVERRIDE;
326#if defined(OS_ANDROID)
327  virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
328      OVERRIDE;
329#elif defined(OS_MACOSX)
330  virtual void SetAllowOverlappingViews(bool overlapping) OVERRIDE;
331  virtual bool GetAllowOverlappingViews() OVERRIDE;
332  virtual void SetAllowOtherViews(bool allow) OVERRIDE;
333  virtual bool GetAllowOtherViews() OVERRIDE;
334#endif
335
336  // Implementation of PageNavigator.
337  virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
338
339  // Implementation of IPC::Sender.
340  virtual bool Send(IPC::Message* message) OVERRIDE;
341
342  // RenderFrameHostDelegate ---------------------------------------------------
343  virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
344                                 const IPC::Message& message) OVERRIDE;
345  virtual const GURL& GetMainFrameLastCommittedURL() const OVERRIDE;
346  virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
347  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
348  virtual void DidStartLoading(RenderFrameHost* render_frame_host,
349                               bool to_different_document) OVERRIDE;
350  virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE;
351  virtual void DidDeferAfterResponseStarted(
352      const scoped_refptr<net::HttpResponseHeaders>& headers,
353      const GURL& url) OVERRIDE;
354  virtual bool WillHandleDeferAfterResponseStarted() OVERRIDE;
355  virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE;
356  virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
357                               const ContextMenuParams& params) OVERRIDE;
358  virtual void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
359                                    const base::string16& message,
360                                    const base::string16& default_prompt,
361                                    const GURL& frame_url,
362                                    JavaScriptMessageType type,
363                                    IPC::Message* reply_msg) OVERRIDE;
364  virtual void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
365                                      const base::string16& message,
366                                      bool is_reload,
367                                      IPC::Message* reply_msg) OVERRIDE;
368  virtual void DidAccessInitialDocument() OVERRIDE;
369  virtual void DidDisownOpener(RenderFrameHost* render_frame_host) OVERRIDE;
370  virtual void DocumentOnLoadCompleted(
371      RenderFrameHost* render_frame_host) OVERRIDE;
372  virtual void UpdateTitle(RenderFrameHost* render_frame_host,
373                           int32 page_id,
374                           const base::string16& title,
375                           base::i18n::TextDirection title_direction) OVERRIDE;
376  virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
377                              const std::string& encoding) OVERRIDE;
378  virtual WebContents* GetAsWebContents() OVERRIDE;
379  virtual bool IsNeverVisible() OVERRIDE;
380  virtual AccessibilityMode GetAccessibilityMode() const OVERRIDE;
381  virtual void AccessibilityEventReceived(
382      const std::vector<AXEventNotificationDetails>& details) OVERRIDE;
383#if defined(OS_WIN)
384  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
385#endif
386
387  // RenderViewHostDelegate ----------------------------------------------------
388  virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
389  virtual bool OnMessageReceived(RenderViewHost* render_view_host,
390                                 const IPC::Message& message) OVERRIDE;
391  // RenderFrameHostDelegate has the same method, so list it there because this
392  // interface is going away.
393  // virtual WebContents* GetAsWebContents() OVERRIDE;
394  virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
395  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
396  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
397  virtual void RenderViewTerminated(RenderViewHost* render_view_host,
398                                    base::TerminationStatus status,
399                                    int error_code) OVERRIDE;
400  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
401  virtual void UpdateState(RenderViewHost* render_view_host,
402                           int32 page_id,
403                           const PageState& page_state) OVERRIDE;
404  virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
405  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
406  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
407  virtual void DidCancelLoading() OVERRIDE;
408  virtual void DocumentAvailableInMainFrame(
409      RenderViewHost* render_view_host) OVERRIDE;
410  virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
411  virtual void RouteMessageEvent(
412      RenderViewHost* rvh,
413      const ViewMsg_PostMessage_Params& params) OVERRIDE;
414  virtual bool AddMessageToConsole(int32 level,
415                                   const base::string16& message,
416                                   int32 line_no,
417                                   const base::string16& source_id) OVERRIDE;
418  virtual RendererPreferences GetRendererPrefs(
419      BrowserContext* browser_context) const OVERRIDE;
420  virtual WebPreferences GetWebkitPrefs() OVERRIDE;
421  virtual void OnUserGesture() OVERRIDE;
422  virtual void OnIgnoredUIEvent() OVERRIDE;
423  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
424                                    bool is_during_beforeunload,
425                                    bool is_during_unload) OVERRIDE;
426  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
427  virtual void LoadStateChanged(const GURL& url,
428                                const net::LoadStateWithParam& load_state,
429                                uint64 upload_position,
430                                uint64 upload_size) OVERRIDE;
431  virtual void Activate() OVERRIDE;
432  virtual void Deactivate() OVERRIDE;
433  virtual void LostCapture() OVERRIDE;
434  virtual void HandleMouseDown() OVERRIDE;
435  virtual void HandleMouseUp() OVERRIDE;
436  virtual void HandlePointerActivate() OVERRIDE;
437  virtual void HandleGestureBegin() OVERRIDE;
438  virtual void HandleGestureEnd() OVERRIDE;
439  virtual void RunFileChooser(
440      RenderViewHost* render_view_host,
441      const FileChooserParams& params) OVERRIDE;
442  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
443  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
444  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
445  virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
446  virtual void RequestToLockMouse(bool user_gesture,
447                                  bool last_unlocked_by_target) OVERRIDE;
448  virtual void LostMouseLock() OVERRIDE;
449  virtual void CreateNewWindow(
450      int render_process_id,
451      int route_id,
452      int main_frame_route_id,
453      const ViewHostMsg_CreateWindow_Params& params,
454      SessionStorageNamespace* session_storage_namespace) OVERRIDE;
455  virtual void CreateNewWidget(int render_process_id,
456                               int route_id,
457                               blink::WebPopupType popup_type) OVERRIDE;
458  virtual void CreateNewFullscreenWidget(int render_process_id,
459                                         int route_id) OVERRIDE;
460  virtual void ShowCreatedWindow(int route_id,
461                                 WindowOpenDisposition disposition,
462                                 const gfx::Rect& initial_pos,
463                                 bool user_gesture) OVERRIDE;
464  virtual void ShowCreatedWidget(int route_id,
465                                 const gfx::Rect& initial_pos) OVERRIDE;
466  virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
467  virtual void RequestMediaAccessPermission(
468      const MediaStreamRequest& request,
469      const MediaResponseCallback& callback) OVERRIDE;
470  virtual SessionStorageNamespace* GetSessionStorageNamespace(
471      SiteInstance* instance) OVERRIDE;
472  virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap() OVERRIDE;
473  virtual FrameTree* GetFrameTree() OVERRIDE;
474
475  // NavigatorDelegate ---------------------------------------------------------
476
477  virtual void DidStartProvisionalLoad(
478      RenderFrameHostImpl* render_frame_host,
479      const GURL& validated_url,
480      bool is_error_page,
481      bool is_iframe_srcdoc) OVERRIDE;
482  virtual void DidStartNavigationTransition(
483      RenderFrameHostImpl* render_frame_host) OVERRIDE;
484  virtual void DidFailProvisionalLoadWithError(
485      RenderFrameHostImpl* render_frame_host,
486      const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
487      OVERRIDE;
488  virtual void DidFailLoadWithError(
489      RenderFrameHostImpl* render_frame_host,
490      const GURL& url,
491      int error_code,
492      const base::string16& error_description) OVERRIDE;
493  virtual void DidRedirectProvisionalLoad(
494      RenderFrameHostImpl* render_frame_host,
495      const GURL& validated_target_url) OVERRIDE;
496  virtual void DidCommitProvisionalLoad(
497      RenderFrameHostImpl* render_frame_host,
498      const GURL& url,
499      PageTransition transition_type) OVERRIDE;
500  virtual void DidNavigateMainFramePreCommit(
501      bool navigation_is_within_page) OVERRIDE;
502  virtual void DidNavigateMainFramePostCommit(
503      const LoadCommittedDetails& details,
504      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
505  virtual void DidNavigateAnyFramePostCommit(
506      RenderFrameHostImpl* render_frame_host,
507      const LoadCommittedDetails& details,
508      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
509  virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
510  virtual bool CanOverscrollContent() const OVERRIDE;
511  virtual void NotifyChangedNavigationState(
512      InvalidateTypes changed_flags) OVERRIDE;
513  virtual void AboutToNavigateRenderFrame(
514      RenderFrameHostImpl* render_frame_host) OVERRIDE;
515  virtual void DidStartNavigationToPendingEntry(
516      RenderFrameHostImpl* render_frame_host,
517      const GURL& url,
518      NavigationController::ReloadType reload_type) OVERRIDE;
519  virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
520                              const OpenURLParams& params) OVERRIDE;
521  virtual bool ShouldPreserveAbortedURLs() OVERRIDE;
522
523  // RenderWidgetHostDelegate --------------------------------------------------
524
525  virtual void RenderWidgetDeleted(
526      RenderWidgetHostImpl* render_widget_host) OVERRIDE;
527  virtual bool PreHandleKeyboardEvent(
528      const NativeWebKeyboardEvent& event,
529      bool* is_keyboard_shortcut) OVERRIDE;
530  virtual void HandleKeyboardEvent(
531      const NativeWebKeyboardEvent& event) OVERRIDE;
532  virtual bool HandleWheelEvent(
533      const blink::WebMouseWheelEvent& event) OVERRIDE;
534  virtual bool PreHandleGestureEvent(
535      const blink::WebGestureEvent& event) OVERRIDE;
536  virtual bool HandleGestureEvent(
537      const blink::WebGestureEvent& event) OVERRIDE;
538  virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
539  virtual void OnTouchEmulationEnabled(bool enabled) OVERRIDE;
540  virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager()
541      OVERRIDE;
542  virtual BrowserAccessibilityManager*
543      GetOrCreateRootBrowserAccessibilityManager() OVERRIDE;
544
545  // RenderFrameHostManager::Delegate ------------------------------------------
546
547  virtual bool CreateRenderViewForRenderManager(
548      RenderViewHost* render_view_host,
549      int opener_route_id,
550      int proxy_routing_id,
551      bool for_main_frame_navigation) OVERRIDE;
552  virtual bool CreateRenderFrameForRenderManager(
553      RenderFrameHost* render_frame_host,
554      int parent_routing_id) OVERRIDE;
555  virtual void BeforeUnloadFiredFromRenderManager(
556      bool proceed, const base::TimeTicks& proceed_time,
557      bool* proceed_to_fire_unload) OVERRIDE;
558  virtual void RenderProcessGoneFromRenderManager(
559      RenderViewHost* render_view_host) OVERRIDE;
560  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
561  virtual void CancelModalDialogsForRenderManager() OVERRIDE;
562  virtual void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
563                                              RenderFrameHost* new_host,
564                                              bool is_main_frame) OVERRIDE;
565  virtual int CreateOpenerRenderViewsForRenderManager(
566      SiteInstance* instance) OVERRIDE;
567  virtual NavigationControllerImpl&
568      GetControllerForRenderManager() OVERRIDE;
569  virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
570  virtual NavigationEntry*
571      GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
572  virtual bool FocusLocationBarByDefault() OVERRIDE;
573  virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
574  virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
575  virtual bool IsHidden() OVERRIDE;
576
577  // NotificationObserver ------------------------------------------------------
578
579  virtual void Observe(int type,
580                       const NotificationSource& source,
581                       const NotificationDetails& details) OVERRIDE;
582
583  // NavigationControllerDelegate ----------------------------------------------
584
585  virtual WebContents* GetWebContents() OVERRIDE;
586  virtual void NotifyNavigationEntryCommitted(
587      const LoadCommittedDetails& load_details) OVERRIDE;
588
589  // Invoked before a form repost warning is shown.
590  virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
591
592  // Activate this WebContents and show a form repost warning.
593  virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
594
595  // Whether the initial empty page of this view has been accessed by another
596  // page, making it unsafe to show the pending URL. Always false after the
597  // first commit.
598  virtual bool HasAccessedInitialDocument() OVERRIDE;
599
600  // Updates the max page ID for the current SiteInstance in this
601  // WebContentsImpl to be at least |page_id|.
602  virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
603
604  // Updates the max page ID for the given SiteInstance in this WebContentsImpl
605  // to be at least |page_id|.
606  virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
607                                              int32 page_id) OVERRIDE;
608
609  // Copy the current map of SiteInstance ID to max page ID from another tab.
610  // This is necessary when this tab adopts the NavigationEntries from
611  // |web_contents|.
612  virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
613
614  // Called by the NavigationController to cause the WebContentsImpl to navigate
615  // to the current pending entry. The NavigationController should be called
616  // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
617  // The callbacks can be inside of this function, or at some future time.
618  //
619  // The entry has a PageID of -1 if newly created (corresponding to navigation
620  // to a new URL).
621  //
622  // If this method returns false, then the navigation is discarded (equivalent
623  // to calling DiscardPendingEntry on the NavigationController).
624  virtual bool NavigateToPendingEntry(
625      NavigationController::ReloadType reload_type) OVERRIDE;
626
627  // Sets the history for this WebContentsImpl to |history_length| entries, and
628  // moves the current page_id to the last entry in the list if it's valid.
629  // This is mainly used when a prerendered page is swapped into the current
630  // tab. The method is virtual for testing.
631  virtual void SetHistoryLengthAndPrune(
632      const SiteInstance* site_instance,
633      int merge_history_length,
634      int32 minimum_page_id) OVERRIDE;
635
636  // Called by InterstitialPageImpl when it creates a RenderFrameHost.
637  virtual void RenderFrameForInterstitialPageCreated(
638      RenderFrameHost* render_frame_host) OVERRIDE;
639
640  // Sets the passed interstitial as the currently showing interstitial.
641  // No interstitial page should already be attached.
642  virtual void AttachInterstitialPage(
643      InterstitialPageImpl* interstitial_page) OVERRIDE;
644
645  // Unsets the currently showing interstitial.
646  virtual void DetachInterstitialPage() OVERRIDE;
647
648  // Changes the IsLoading state and notifies the delegate as needed.
649  // |details| is used to provide details on the load that just finished
650  // (but can be null if not applicable).
651  virtual void SetIsLoading(RenderViewHost* render_view_host,
652                            bool is_loading,
653                            bool to_different_document,
654                            LoadNotificationDetails* details) OVERRIDE;
655
656  typedef base::Callback<void(WebContents*)> CreatedCallback;
657
658  // Requests the renderer to select the region between two points in the
659  // currently focused frame.
660  void SelectRange(const gfx::Point& start, const gfx::Point& end);
661
662  // Notifies the main frame that it can continue navigation (if it was deferred
663  // immediately at first response).
664  void ResumeResponseDeferredAtStart();
665
666 private:
667  friend class TestNavigationObserver;
668  friend class WebContentsAddedObserver;
669  friend class WebContentsObserver;
670  friend class WebContents;  // To implement factory methods.
671
672  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
673  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
674  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
675  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
676                           CrossSiteCantPreemptAfterUnload);
677  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
678  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
679  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
680  FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
681  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
682  FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
683  FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
684
685  // So InterstitialPageImpl can access SetIsLoading.
686  friend class InterstitialPageImpl;
687
688  // TODO(brettw) TestWebContents shouldn't exist!
689  friend class TestWebContents;
690
691  class DestructionObserver;
692
693  // See WebContents::Create for a description of these parameters.
694  WebContentsImpl(BrowserContext* browser_context,
695                  WebContentsImpl* opener);
696
697  // Add and remove observers for page navigation notifications. The order in
698  // which notifications are sent to observers is undefined. Clients must be
699  // sure to remove the observer before they go away.
700  void AddObserver(WebContentsObserver* observer);
701  void RemoveObserver(WebContentsObserver* observer);
702
703  // Clears this tab's opener if it has been closed.
704  void OnWebContentsDestroyed(WebContentsImpl* web_contents);
705
706  // Creates and adds to the map a destruction observer watching |web_contents|.
707  // No-op if such an observer already exists.
708  void AddDestructionObserver(WebContentsImpl* web_contents);
709
710  // Deletes and removes from the map a destruction observer
711  // watching |web_contents|. No-op if there is no such observer.
712  void RemoveDestructionObserver(WebContentsImpl* web_contents);
713
714  // Traverses all the RenderFrameHosts in the FrameTree and creates a set
715  // all the unique RenderWidgetHostViews.
716  std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
717
718  // Callback function when showing JavaScript dialogs.  Takes in a routing ID
719  // pair to identify the RenderFrameHost that opened the dialog, because it's
720  // possible for the RenderFrameHost to be deleted by the time this is called.
721  void OnDialogClosed(int render_process_id,
722                      int render_frame_id,
723                      IPC::Message* reply_msg,
724                      bool dialog_was_suppressed,
725                      bool success,
726                      const base::string16& user_input);
727
728  // Callback function when requesting permission to access the PPAPI broker.
729  // |result| is true if permission was granted.
730  void OnPpapiBrokerPermissionResult(int routing_id, bool result);
731
732  bool OnMessageReceived(RenderViewHost* render_view_host,
733                         RenderFrameHost* render_frame_host,
734                         const IPC::Message& message);
735
736  // IPC message handlers.
737  void OnThemeColorChanged(SkColor theme_color);
738  void OnDidLoadResourceFromMemoryCache(const GURL& url,
739                                        const std::string& security_info,
740                                        const std::string& http_request,
741                                        const std::string& mime_type,
742                                        ResourceType resource_type);
743  void OnDidDisplayInsecureContent();
744  void OnDidRunInsecureContent(const std::string& security_origin,
745                               const GURL& target_url);
746  void OnDocumentLoadedInFrame();
747  void OnDidFinishLoad(const GURL& url);
748  void OnDidStartLoading(bool to_different_document);
749  void OnDidStopLoading();
750  void OnDidChangeLoadProgress(double load_progress);
751  void OnGoToEntryAtOffset(int offset);
752  void OnUpdateZoomLimits(int minimum_percent,
753                          int maximum_percent);
754  void OnEnumerateDirectory(int request_id, const base::FilePath& path);
755
756  void OnRegisterProtocolHandler(const std::string& protocol,
757                                 const GURL& url,
758                                 const base::string16& title,
759                                 bool user_gesture);
760  void OnUnregisterProtocolHandler(const std::string& protocol,
761                                   const GURL& url,
762                                   bool user_gesture);
763  void OnFindReply(int request_id,
764                   int number_of_matches,
765                   const gfx::Rect& selection_rect,
766                   int active_match_ordinal,
767                   bool final_update);
768#if defined(OS_ANDROID)
769  void OnFindMatchRectsReply(int version,
770                             const std::vector<gfx::RectF>& rects,
771                             const gfx::RectF& active_rect);
772
773  void OnOpenDateTimeDialog(
774      const ViewHostMsg_DateTimeDialogValue_Params& value);
775#endif
776  void OnPepperPluginHung(int plugin_child_id,
777                          const base::FilePath& path,
778                          bool is_hung);
779  void OnPluginCrashed(const base::FilePath& plugin_path,
780                       base::ProcessId plugin_pid);
781  void OnDomOperationResponse(const std::string& json_string,
782                              int automation_id);
783  void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
784  void OnOpenColorChooser(int color_chooser_id,
785                          SkColor color,
786                          const std::vector<ColorSuggestion>& suggestions);
787  void OnEndColorChooser(int color_chooser_id);
788  void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
789  void OnWebUISend(const GURL& source_url,
790                   const std::string& name,
791                   const base::ListValue& args);
792  void OnRequestPpapiBrokerPermission(int routing_id,
793                                      const GURL& url,
794                                      const base::FilePath& plugin_path);
795  void OnBrowserPluginMessage(const IPC::Message& message);
796  void OnDidDownloadImage(int id,
797                          int http_status_code,
798                          const GURL& image_url,
799                          const std::vector<SkBitmap>& bitmaps,
800                          const std::vector<gfx::Size>& original_bitmap_sizes);
801  void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
802  void OnFirstVisuallyNonEmptyPaint();
803  void OnMediaPlayingNotification(int64 player_cookie,
804                                  bool has_video,
805                                  bool has_audio);
806  void OnMediaPausedNotification(int64 player_cookie);
807  void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
808                               const base::string16& main_text,
809                               const base::string16& sub_text);
810  void OnHideValidationMessage();
811  void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
812
813  // Called by derived classes to indicate that we're no longer waiting for a
814  // response. This won't actually update the throbber, but it will get picked
815  // up at the next animation step if the throbber is going.
816  void SetNotWaitingForResponse() { waiting_for_response_ = false; }
817
818  // Navigation helpers --------------------------------------------------------
819  //
820  // These functions are helpers for Navigate() and DidNavigate().
821
822  // Handles post-navigation tasks in DidNavigate AFTER the entry has been
823  // committed to the navigation controller. Note that the navigation entry is
824  // not provided since it may be invalid/changed after being committed. The
825  // current navigation entry is in the NavigationController at this point.
826
827  // If our controller was restored, update the max page ID associated with the
828  // given RenderViewHost to be larger than the number of restored entries.
829  // This is called in CreateRenderView before any navigations in the RenderView
830  // have begun, to prevent any races in updating RenderView::next_page_id.
831  void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
832
833  // Saves the given title to the navigation entry and does associated work. It
834  // will update history and the view for the new title, and also synthesize
835  // titles for file URLs that have none (so we require that the URL of the
836  // entry already be set).
837  //
838  // This is used as the backend for state updates, which include a new title,
839  // or the dedicated set title message. It returns true if the new title is
840  // different and was therefore updated.
841  bool UpdateTitleForEntry(NavigationEntryImpl* entry,
842                           const base::string16& title);
843
844  // Recursively creates swapped out RenderViews for this tab's opener chain
845  // (including this tab) in the given SiteInstance, allowing other tabs to send
846  // cross-process JavaScript calls to their opener(s).  Returns the route ID of
847  // this tab's RenderView for |instance|.
848  int CreateOpenerRenderViews(SiteInstance* instance);
849
850  // Helper for CreateNewWidget/CreateNewFullscreenWidget.
851  void CreateNewWidget(int render_process_id,
852                       int route_id,
853                       bool is_fullscreen,
854                       blink::WebPopupType popup_type);
855
856  // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
857  void ShowCreatedWidget(int route_id,
858                         bool is_fullscreen,
859                         const gfx::Rect& initial_pos);
860
861  // Finds the new RenderWidgetHost and returns it. Note that this can only be
862  // called once as this call also removes it from the internal map.
863  RenderWidgetHostView* GetCreatedWidget(int route_id);
864
865  // Finds the new WebContentsImpl by route_id, initializes it for
866  // renderer-initiated creation, and returns it. Note that this can only be
867  // called once as this call also removes it from the internal map.
868  WebContentsImpl* GetCreatedWindow(int route_id);
869
870  // Tracking loading progress -------------------------------------------------
871
872  // Resets the tracking state of the current load.
873  void ResetLoadProgressState();
874
875  // Calculates the progress of the current load and notifies the delegate.
876  void SendLoadProgressChanged();
877
878  // Called once when the last frame on the page has stopped loading.
879  void DidStopLoading(RenderFrameHost* render_frame_host);
880
881  // Misc non-view stuff -------------------------------------------------------
882
883  // Helper functions for sending notifications.
884  void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
885  void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
886  void NotifyDisconnected();
887
888  void SetEncoding(const std::string& encoding);
889
890  // TODO(creis): This should take in a FrameTreeNode to know which node's
891  // render manager to return.  For now, we just return the root's.
892  RenderFrameHostManager* GetRenderManager() const;
893
894  RenderViewHostImpl* GetRenderViewHostImpl();
895
896  // Removes browser plugin embedder if there is one.
897  void RemoveBrowserPluginEmbedder();
898
899  // Clear |render_frame_host|'s PowerSaveBlockers.
900  void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
901
902  // Clear all PowerSaveBlockers, leave power_save_blocker_ empty.
903  void ClearAllPowerSaveBlockers();
904
905  // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
906  gfx::Size GetSizeForNewRenderView();
907
908  void OnFrameRemoved(RenderFrameHost* render_frame_host);
909
910  // Helper method that's called whenever |preferred_size_| or
911  // |preferred_size_for_capture_| changes, to propagate the new value to the
912  // |delegate_|.
913  void OnPreferredSizeChanged(const gfx::Size& old_size);
914
915  // Adds/removes a callback called on creation of each new WebContents.
916  // Deprecated, about to remove.
917  static void AddCreatedCallback(const CreatedCallback& callback);
918  static void RemoveCreatedCallback(const CreatedCallback& callback);
919
920  // Data for core operation ---------------------------------------------------
921
922  // Delegate for notifying our owner about stuff. Not owned by us.
923  WebContentsDelegate* delegate_;
924
925  // Handles the back/forward list and loading.
926  NavigationControllerImpl controller_;
927
928  // The corresponding view.
929  scoped_ptr<WebContentsView> view_;
930
931  // The view of the RVHD. Usually this is our WebContentsView implementation,
932  // but if an embedder uses a different WebContentsView, they'll need to
933  // provide this.
934  RenderViewHostDelegateView* render_view_host_delegate_view_;
935
936  // Tracks created WebContentsImpl objects that have not been shown yet. They
937  // are identified by the route ID passed to CreateNewWindow.
938  typedef std::map<int, WebContentsImpl*> PendingContents;
939  PendingContents pending_contents_;
940
941  // These maps hold on to the widgets that we created on behalf of the renderer
942  // that haven't shown yet.
943  typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
944  PendingWidgetViews pending_widget_views_;
945
946  typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
947  DestructionObservers destruction_observers_;
948
949  // A list of observers notified when page state changes. Weak references.
950  // This MUST be listed above frame_tree_ since at destruction time the
951  // latter might cause RenderViewHost's destructor to call us and we might use
952  // the observer list then.
953  ObserverList<WebContentsObserver> observers_;
954
955  // The tab that opened this tab, if any.  Will be set to null if the opener
956  // is closed.
957  WebContentsImpl* opener_;
958
959  // True if this tab was opened by another tab. This is not unset if the opener
960  // is closed.
961  bool created_with_opener_;
962
963#if defined(OS_WIN)
964  gfx::NativeViewAccessible accessible_parent_;
965#endif
966
967  // Helper classes ------------------------------------------------------------
968
969  // Maps the RenderFrameHost to its media_player_cookie and PowerSaveBlocker
970  // pairs. Key is the RenderFrameHost, value is the map which maps
971  // player_cookie on to PowerSaveBlocker.
972  typedef std::map<RenderFrameHost*, std::map<int64, PowerSaveBlocker*> >
973      PowerSaveBlockerMap;
974  PowerSaveBlockerMap power_save_blockers_;
975
976  // Manages the frame tree of the page and process swaps in each node.
977  FrameTree frame_tree_;
978
979  // SavePackage, lazily created.
980  scoped_refptr<SavePackage> save_package_;
981
982  // Data for loading state ----------------------------------------------------
983
984  // Indicates whether we're currently loading a resource.
985  bool is_loading_;
986
987  // Indicates whether the current load is to a different document. Only valid
988  // if is_loading_ is true.
989  bool is_load_to_different_document_;
990
991  // Indicates if the tab is considered crashed.
992  base::TerminationStatus crashed_status_;
993  int crashed_error_code_;
994
995  // Whether this WebContents is waiting for a first-response for the
996  // main resource of the page. This controls whether the throbber state is
997  // "waiting" or "loading."
998  bool waiting_for_response_;
999
1000  // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1001  // to a given tab and SiteInstance, and must be valid for the lifetime of the
1002  // WebContentsImpl.
1003  std::map<int32, int32> max_page_ids_;
1004
1005  // The current load state and the URL associated with it.
1006  net::LoadStateWithParam load_state_;
1007  base::string16 load_state_host_;
1008
1009  // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
1010  // frame's completion (from 0 to 1).
1011  typedef base::hash_map<int64, double> LoadingProgressMap;
1012  LoadingProgressMap loading_progresses_;
1013  double loading_total_progress_;
1014
1015  base::TimeTicks loading_last_progress_update_;
1016
1017  base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1018
1019  // Counter to track how many frames have sent start notifications but not
1020  // stop notifications.
1021  int loading_frames_in_progress_;
1022
1023  // Upload progress, for displaying in the status bar.
1024  // Set to zero when there is no significant upload happening.
1025  uint64 upload_size_;
1026  uint64 upload_position_;
1027
1028  // Data for current page -----------------------------------------------------
1029
1030  // When a title cannot be taken from any entry, this title will be used.
1031  base::string16 page_title_when_no_navigation_entry_;
1032
1033  // When a navigation occurs, we record its contents MIME type. It can be
1034  // used to check whether we can do something for some special contents.
1035  std::string contents_mime_type_;
1036
1037  // The last reported character encoding, not canonicalized.
1038  std::string last_reported_encoding_;
1039
1040  // The canonicalized character encoding.
1041  std::string canonical_encoding_;
1042
1043  // True if this is a secure page which displayed insecure content.
1044  bool displayed_insecure_content_;
1045
1046  // Whether the initial empty page has been accessed by another page, making it
1047  // unsafe to show the pending URL. Usually false unless another window tries
1048  // to modify the blank page.  Always false after the first commit.
1049  bool has_accessed_initial_document_;
1050
1051  // Data for misc internal state ----------------------------------------------
1052
1053  // When > 0, the WebContents is currently being captured (e.g., for
1054  // screenshots or mirroring); and the underlying RenderWidgetHost should not
1055  // be told it is hidden.
1056  int capturer_count_;
1057
1058  // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1059  bool should_normally_be_visible_;
1060
1061  // See getter above.
1062  bool is_being_destroyed_;
1063
1064  // Indicates whether we should notify about disconnection of this
1065  // WebContentsImpl. This is used to ensure disconnection notifications only
1066  // happen if a connection notification has happened and that they happen only
1067  // once.
1068  bool notify_disconnection_;
1069
1070  // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1071  // delegate of this WebContentsImpl is nulled before its destructor is called.
1072  JavaScriptDialogManager* dialog_manager_;
1073
1074  // Set to true when there is an active "before unload" dialog.  When true,
1075  // we've forced the throbber to start in Navigate, and we need to remember to
1076  // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1077  bool is_showing_before_unload_dialog_;
1078
1079  // Settings that get passed to the renderer process.
1080  RendererPreferences renderer_preferences_;
1081
1082  // The time that this WebContents was last made active. The initial value is
1083  // the WebContents creation time.
1084  base::TimeTicks last_active_time_;
1085
1086  // See description above setter.
1087  bool closed_by_user_gesture_;
1088
1089  // Minimum/maximum zoom percent.
1090  int minimum_zoom_percent_;
1091  int maximum_zoom_percent_;
1092
1093  // The raw accumulated zoom value and the actual zoom increments made for an
1094  // an in-progress pinch gesture.
1095  float totalPinchGestureAmount_;
1096  int currentPinchZoomStepDelta_;
1097
1098  // The intrinsic size of the page.
1099  gfx::Size preferred_size_;
1100
1101  // The preferred size for content screen capture.  When |capturer_count_| > 0,
1102  // this overrides |preferred_size_|.
1103  gfx::Size preferred_size_for_capture_;
1104
1105#if defined(OS_ANDROID)
1106  // Date time chooser opened by this tab.
1107  // Only used in Android since all other platforms use a multi field UI.
1108  scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1109#endif
1110
1111  // Holds information about a current color chooser dialog, if one is visible.
1112  struct ColorChooserInfo {
1113    ColorChooserInfo(int render_process_id,
1114                     int render_frame_id,
1115                     ColorChooser* chooser,
1116                     int identifier);
1117    ~ColorChooserInfo();
1118
1119    int render_process_id;
1120    int render_frame_id;
1121
1122    // Color chooser that was opened by this tab.
1123    scoped_ptr<ColorChooser> chooser;
1124
1125    // A unique identifier for the current color chooser.  Identifiers are
1126    // unique across a renderer process.  This avoids race conditions in
1127    // synchronizing the browser and renderer processes.  For example, if a
1128    // renderer closes one chooser and opens another, and simultaneously the
1129    // user picks a color in the first chooser, the IDs can be used to drop the
1130    // "chose a color" message rather than erroneously tell the renderer that
1131    // the user picked a color in the second chooser.
1132    int identifier;
1133  };
1134
1135  scoped_ptr<ColorChooserInfo> color_chooser_info_;
1136
1137  // Manages the embedder state for browser plugins, if this WebContents is an
1138  // embedder; NULL otherwise.
1139  scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1140  // Manages the guest state for browser plugin, if this WebContents is a guest;
1141  // NULL otherwise.
1142  scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1143
1144  // This must be at the end, or else we might get notifications and use other
1145  // member variables that are gone.
1146  NotificationRegistrar registrar_;
1147
1148  // Used during IPC message dispatching from the RenderView/RenderFrame so that
1149  // the handlers can get a pointer to the RVH through which the message was
1150  // received.
1151  RenderViewHost* render_view_message_source_;
1152  RenderFrameHost* render_frame_message_source_;
1153
1154  // All live RenderWidgetHostImpls that are created by this object and may
1155  // outlive it.
1156  std::set<RenderWidgetHostImpl*> created_widgets_;
1157
1158  // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1159  int fullscreen_widget_routing_id_;
1160
1161  // At the time the fullscreen widget was being shut down, did it have focus?
1162  // This is used to restore focus to the WebContentsView after both: 1) the
1163  // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1164  // completed making layout changes to effect an exit from fullscreen mode.
1165  bool fullscreen_widget_had_focus_at_shutdown_;
1166
1167  // Maps the ids of pending image downloads to their callbacks
1168  typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1169  ImageDownloadMap image_download_map_;
1170
1171  // Whether this WebContents is responsible for displaying a subframe in a
1172  // different process from its parent page.
1173  bool is_subframe_;
1174
1175  // Whether touch emulation is enabled in RenderWidgetHost.
1176  bool touch_emulation_enabled_;
1177
1178  // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1179  bool last_dialog_suppressed_;
1180
1181  scoped_ptr<GeolocationDispatcherHost> geolocation_dispatcher_host_;
1182
1183  scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
1184
1185  scoped_ptr<ScreenOrientationDispatcherHost>
1186      screen_orientation_dispatcher_host_;
1187
1188  // The accessibility mode for all frames. This is queried when each frame
1189  // is created, and broadcast to all frames when it changes.
1190  AccessibilityMode accessibility_mode_;
1191
1192  DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1193};
1194
1195}  // namespace content
1196
1197#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
1198