web_contents_impl.h revision 6d86b77056ed63eb6871182f42a9fd5f07550f90 
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/content_export.h"
27#include "content/public/browser/color_chooser.h"
28#include "content/public/browser/notification_observer.h"
29#include "content/public/browser/notification_registrar.h"
30#include "content/public/browser/web_contents.h"
31#include "content/public/common/page_transition_types.h"
32#include "content/public/common/renderer_preferences.h"
33#include "content/public/common/three_d_api_types.h"
34#include "net/base/load_states.h"
35#include "third_party/WebKit/public/web/WebDragOperation.h"
36#include "ui/gfx/rect_f.h"
37#include "ui/gfx/size.h"
38#include "webkit/common/resource_type.h"
39
40struct BrowserPluginHostMsg_ResizeGuest_Params;
41struct ViewHostMsg_DateTimeDialogValue_Params;
42struct ViewMsg_PostMessage_Params;
43
44namespace content {
45class BrowserPluginEmbedder;
46class BrowserPluginGuest;
47class BrowserPluginGuestManager;
48class DateTimeChooserAndroid;
49class DownloadItem;
50class GeolocationDispatcherHost;
51class InterstitialPageImpl;
52class JavaScriptDialogManager;
53class MidiDispatcherHost;
54class PowerSaveBlocker;
55class RenderViewHost;
56class RenderViewHostDelegateView;
57class RenderViewHostImpl;
58class RenderWidgetHostImpl;
59class SavePackage;
60class ScreenOrientationDispatcherHost;
61class SiteInstance;
62class TestWebContents;
63class WebContentsDelegate;
64class WebContentsImpl;
65class WebContentsObserver;
66class WebContentsView;
67class WebContentsViewDelegate;
68struct AXEventNotificationDetails;
69struct ColorSuggestion;
70struct FaviconURL;
71struct LoadNotificationDetails;
72struct ResourceRedirectDetails;
73struct ResourceRequestDetails;
74
75// Factory function for the implementations that content knows about. Takes
76// ownership of |delegate|.
77WebContentsView* CreateWebContentsView(
78    WebContentsImpl* web_contents,
79    WebContentsViewDelegate* delegate,
80    RenderViewHostDelegateView** render_view_host_delegate_view);
81
82class CONTENT_EXPORT WebContentsImpl
83    : public NON_EXPORTED_BASE(WebContents),
84      public NON_EXPORTED_BASE(RenderFrameHostDelegate),
85      public RenderViewHostDelegate,
86      public RenderWidgetHostDelegate,
87      public RenderFrameHostManager::Delegate,
88      public NotificationObserver,
89      public NON_EXPORTED_BASE(NavigationControllerDelegate),
90      public NON_EXPORTED_BASE(NavigatorDelegate) {
91 public:
92  virtual ~WebContentsImpl();
93
94  static WebContentsImpl* CreateWithOpener(
95      const WebContents::CreateParams& params,
96      WebContentsImpl* opener);
97
98  // Returns the opener WebContentsImpl, if any. This can be set to null if the
99  // opener is closed or the page clears its window.opener.
100  WebContentsImpl* opener() const { return opener_; }
101
102  // Creates a swapped out RenderView. This is used by the browser plugin to
103  // create a swapped out RenderView in the embedder render process for the
104  // guest, to expose the guest's window object to the embedder.
105  // This returns the routing ID of the newly created swapped out RenderView.
106  int CreateSwappedOutRenderView(SiteInstance* instance);
107
108  // Complex initialization here. Specifically needed to avoid having
109  // members call back into our virtual functions in the constructor.
110  virtual void Init(const WebContents::CreateParams& params);
111
112  // Returns the SavePackage which manages the page saving job. May be NULL.
113  SavePackage* save_package() const { return save_package_.get(); }
114
115#if defined(OS_ANDROID)
116  // In Android WebView, the RenderView needs created even there is no
117  // navigation entry, this allows Android WebViews to use
118  // javascript: URLs that load into the DOMWindow before the first page
119  // load. This is not safe to do in any context that a web page could get a
120  // reference to the DOMWindow before the first page load.
121  bool CreateRenderViewForInitialEmptyDocument();
122#endif
123
124  // Expose the render manager for testing.
125  // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
126  RenderFrameHostManager* GetRenderManagerForTesting();
127
128  // Returns guest browser plugin object, or NULL if this WebContents is not a
129  // guest.
130  BrowserPluginGuest* GetBrowserPluginGuest() const;
131
132  // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
133  // has a BrowserPluginGuest then that implies that it is being hosted by
134  // a BrowserPlugin object in an embedder renderer process.
135  void SetBrowserPluginGuest(BrowserPluginGuest* guest);
136
137  // Returns embedder browser plugin object, or NULL if this WebContents is not
138  // an embedder.
139  BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
140
141  // Gets the current fullscreen render widget's routing ID. Returns
142  // MSG_ROUTING_NONE when there is no fullscreen render widget.
143  int GetFullscreenWidgetRoutingID() const;
144
145  // Invoked when visible SSL state (as defined by SSLStatus) changes.
146  void DidChangeVisibleSSLState();
147
148  // Informs the render view host and the BrowserPluginEmbedder, if present, of
149  // a Drag Source End.
150  void DragSourceEndedAt(int client_x, int client_y, int screen_x,
151      int screen_y, blink::WebDragOperation operation);
152
153  // A response has been received for a resource request.
154  void DidGetResourceResponseStart(
155      const ResourceRequestDetails& details);
156
157  // A redirect was received while requesting a resource.
158  void DidGetRedirectForResourceRequest(
159      RenderViewHost* render_view_host,
160      const ResourceRedirectDetails& details);
161
162  WebContentsView* GetView() const;
163
164  GeolocationDispatcherHost* geolocation_dispatcher_host() {
165    return geolocation_dispatcher_host_.get();
166  }
167
168  bool should_normally_be_visible() { return should_normally_be_visible_; }
169
170  // WebContents ------------------------------------------------------
171  virtual WebContentsDelegate* GetDelegate() OVERRIDE;
172  virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
173  virtual NavigationControllerImpl& GetController() OVERRIDE;
174  virtual const NavigationControllerImpl& GetController() const OVERRIDE;
175  virtual BrowserContext* GetBrowserContext() const OVERRIDE;
176  virtual const GURL& GetURL() const OVERRIDE;
177  virtual const GURL& GetVisibleURL() const OVERRIDE;
178  virtual const GURL& GetLastCommittedURL() const OVERRIDE;
179  virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
180  virtual RenderFrameHost* GetMainFrame() OVERRIDE;
181  virtual RenderFrameHost* GetFocusedFrame() OVERRIDE;
182  virtual void ForEachFrame(
183      const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
184  virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
185  virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
186  virtual int GetRoutingID() const OVERRIDE;
187  virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE;
188  virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const
189      OVERRIDE;
190  virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE;
191  virtual WebUI* GetWebUI() const OVERRIDE;
192  virtual WebUI* GetCommittedWebUI() const OVERRIDE;
193  virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;
194  virtual const std::string& GetUserAgentOverride() const OVERRIDE;
195#if defined(OS_WIN)
196  virtual void SetParentNativeViewAccessible(
197      gfx::NativeViewAccessible accessible_parent) OVERRIDE;
198#endif
199  virtual const base::string16& GetTitle() const OVERRIDE;
200  virtual int32 GetMaxPageID() OVERRIDE;
201  virtual int32 GetMaxPageIDForSiteInstance(
202      SiteInstance* site_instance) OVERRIDE;
203  virtual SiteInstance* GetSiteInstance() const OVERRIDE;
204  virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE;
205  virtual bool IsLoading() const OVERRIDE;
206  virtual bool IsLoadingToDifferentDocument() const OVERRIDE;
207  virtual bool IsWaitingForResponse() const OVERRIDE;
208  virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
209  virtual const base::string16& GetLoadStateHost() const OVERRIDE;
210  virtual uint64 GetUploadSize() const OVERRIDE;
211  virtual uint64 GetUploadPosition() const OVERRIDE;
212  virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
213  virtual const std::string& GetEncoding() const OVERRIDE;
214  virtual bool DisplayedInsecureContent() const OVERRIDE;
215  virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
216  virtual void DecrementCapturerCount() OVERRIDE;
217  virtual int GetCapturerCount() const OVERRIDE;
218  virtual bool IsCrashed() const OVERRIDE;
219  virtual void SetIsCrashed(base::TerminationStatus status,
220                            int error_code) OVERRIDE;
221  virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
222  virtual bool IsBeingDestroyed() const OVERRIDE;
223  virtual void NotifyNavigationStateChanged(unsigned changed_flags) OVERRIDE;
224  virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
225  virtual void WasShown() OVERRIDE;
226  virtual void WasHidden() OVERRIDE;
227  virtual bool NeedToFireBeforeUnload() OVERRIDE;
228  virtual void DispatchBeforeUnload(bool for_cross_site_transition) OVERRIDE;
229  virtual void Stop() OVERRIDE;
230  virtual WebContents* Clone() OVERRIDE;
231  virtual void ReloadFocusedFrame(bool ignore_cache) OVERRIDE;
232  virtual void Undo() OVERRIDE;
233  virtual void Redo() OVERRIDE;
234  virtual void Cut() OVERRIDE;
235  virtual void Copy() OVERRIDE;
236  virtual void CopyToFindPboard() OVERRIDE;
237  virtual void Paste() OVERRIDE;
238  virtual void PasteAndMatchStyle() OVERRIDE;
239  virtual void Delete() OVERRIDE;
240  virtual void SelectAll() OVERRIDE;
241  virtual void Unselect() OVERRIDE;
242  virtual void Replace(const base::string16& word) OVERRIDE;
243  virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE;
244  virtual void NotifyContextMenuClosed(
245      const CustomContextMenuContext& context) OVERRIDE;
246  virtual void ExecuteCustomContextMenuCommand(
247      int action, const CustomContextMenuContext& context) OVERRIDE;
248  virtual gfx::NativeView GetNativeView() OVERRIDE;
249  virtual gfx::NativeView GetContentNativeView() OVERRIDE;
250  virtual gfx::NativeWindow GetTopLevelNativeWindow() OVERRIDE;
251  virtual gfx::Rect GetContainerBounds() OVERRIDE;
252  virtual gfx::Rect GetViewBounds() OVERRIDE;
253  virtual DropData* GetDropData() OVERRIDE;
254  virtual void Focus() OVERRIDE;
255  virtual void SetInitialFocus() OVERRIDE;
256  virtual void StoreFocus() OVERRIDE;
257  virtual void RestoreFocus() OVERRIDE;
258  virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
259  virtual bool ShowingInterstitialPage() const OVERRIDE;
260  virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
261  virtual bool IsSavable() OVERRIDE;
262  virtual void OnSavePage() OVERRIDE;
263  virtual bool SavePage(const base::FilePath& main_file,
264                        const base::FilePath& dir_path,
265                        SavePageType save_type) OVERRIDE;
266  virtual void SaveFrame(const GURL& url,
267                         const Referrer& referrer) OVERRIDE;
268  virtual void GenerateMHTML(
269      const base::FilePath& file,
270      const base::Callback<void(int64)>& callback)
271          OVERRIDE;
272  virtual const std::string& GetContentsMimeType() const OVERRIDE;
273  virtual bool WillNotifyDisconnection() const OVERRIDE;
274  virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
275  virtual void ResetOverrideEncoding() OVERRIDE;
276  virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
277  virtual void Close() OVERRIDE;
278  virtual void SystemDragEnded() OVERRIDE;
279  virtual void UserGestureDone() OVERRIDE;
280  virtual void SetClosedByUserGesture(bool value) OVERRIDE;
281  virtual bool GetClosedByUserGesture() const OVERRIDE;
282  virtual int GetZoomPercent(bool* enable_increment,
283                             bool* enable_decrement) const OVERRIDE;
284  virtual void ViewSource() OVERRIDE;
285  virtual void ViewFrameSource(const GURL& url,
286                               const PageState& page_state) OVERRIDE;
287  virtual int GetMinimumZoomPercent() const OVERRIDE;
288  virtual int GetMaximumZoomPercent() const OVERRIDE;
289  virtual gfx::Size GetPreferredSize() const OVERRIDE;
290  virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
291  virtual bool HasOpener() const OVERRIDE;
292  virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
293  virtual void DidEndColorChooser() OVERRIDE;
294  virtual int DownloadImage(const GURL& url,
295                            bool is_favicon,
296                            uint32_t max_bitmap_size,
297                            const ImageDownloadCallback& callback) OVERRIDE;
298  virtual bool IsSubframe() const OVERRIDE;
299  virtual void Find(int request_id,
300                    const base::string16& search_text,
301                    const blink::WebFindOptions& options) OVERRIDE;
302  virtual void StopFinding(StopFindAction action) OVERRIDE;
303  virtual void InsertCSS(const std::string& css) OVERRIDE;
304#if defined(OS_ANDROID)
305  virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
306      OVERRIDE;
307#elif defined(OS_MACOSX)
308  virtual void SetAllowOverlappingViews(bool overlapping) OVERRIDE;
309  virtual bool GetAllowOverlappingViews() OVERRIDE;
310  virtual void SetOverlayView(WebContents* overlay,
311                              const gfx::Point& offset) OVERRIDE;
312  virtual void RemoveOverlayView() OVERRIDE;
313#endif
314
315  // Implementation of PageNavigator.
316  virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
317
318  // Implementation of IPC::Sender.
319  virtual bool Send(IPC::Message* message) OVERRIDE;
320
321  // RenderFrameHostDelegate ---------------------------------------------------
322  virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
323                                 const IPC::Message& message) OVERRIDE;
324  virtual const GURL& GetMainFrameLastCommittedURL() const OVERRIDE;
325  virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
326  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
327  virtual void DidStartLoading(RenderFrameHost* render_frame_host,
328                               bool to_different_document) OVERRIDE;
329  virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE;
330  virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE;
331  virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
332                               const ContextMenuParams& params) OVERRIDE;
333  virtual void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
334                                    const base::string16& message,
335                                    const base::string16& default_prompt,
336                                    const GURL& frame_url,
337                                    JavaScriptMessageType type,
338                                    IPC::Message* reply_msg) OVERRIDE;
339  virtual void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
340                                      const base::string16& message,
341                                      bool is_reload,
342                                      IPC::Message* reply_msg) OVERRIDE;
343  virtual void DidAccessInitialDocument() OVERRIDE;
344  virtual void DidDisownOpener(RenderFrameHost* render_frame_host) OVERRIDE;
345  virtual void DocumentOnLoadCompleted(
346      RenderFrameHost* render_frame_host) OVERRIDE;
347  virtual void UpdateTitle(RenderFrameHost* render_frame_host,
348                           int32 page_id,
349                           const base::string16& title,
350                           base::i18n::TextDirection title_direction) OVERRIDE;
351  virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
352                              const std::string& encoding) OVERRIDE;
353  virtual WebContents* GetAsWebContents() OVERRIDE;
354  virtual bool IsNeverVisible() OVERRIDE;
355
356  // RenderViewHostDelegate ----------------------------------------------------
357  virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
358  virtual bool OnMessageReceived(RenderViewHost* render_view_host,
359                                 const IPC::Message& message) OVERRIDE;
360  // RenderFrameHostDelegate has the same method, so list it there because this
361  // interface is going away.
362  // virtual WebContents* GetAsWebContents() OVERRIDE;
363  virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
364  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
365  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
366  virtual void RenderViewTerminated(RenderViewHost* render_view_host,
367                                    base::TerminationStatus status,
368                                    int error_code) OVERRIDE;
369  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
370  virtual void UpdateState(RenderViewHost* render_view_host,
371                           int32 page_id,
372                           const PageState& page_state) OVERRIDE;
373  virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
374  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
375  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
376  virtual void DidCancelLoading() OVERRIDE;
377  virtual void DocumentAvailableInMainFrame(
378      RenderViewHost* render_view_host) OVERRIDE;
379  virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
380  virtual void RouteMessageEvent(
381      RenderViewHost* rvh,
382      const ViewMsg_PostMessage_Params& params) OVERRIDE;
383  virtual bool AddMessageToConsole(int32 level,
384                                   const base::string16& message,
385                                   int32 line_no,
386                                   const base::string16& source_id) OVERRIDE;
387  virtual RendererPreferences GetRendererPrefs(
388      BrowserContext* browser_context) const OVERRIDE;
389  virtual WebPreferences GetWebkitPrefs() OVERRIDE;
390  virtual void OnUserGesture() OVERRIDE;
391  virtual void OnIgnoredUIEvent() OVERRIDE;
392  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
393                                    bool is_during_beforeunload,
394                                    bool is_during_unload) OVERRIDE;
395  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
396  virtual void LoadStateChanged(const GURL& url,
397                                const net::LoadStateWithParam& load_state,
398                                uint64 upload_position,
399                                uint64 upload_size) OVERRIDE;
400  virtual void Activate() OVERRIDE;
401  virtual void Deactivate() OVERRIDE;
402  virtual void LostCapture() OVERRIDE;
403  virtual void HandleMouseDown() OVERRIDE;
404  virtual void HandleMouseUp() OVERRIDE;
405  virtual void HandlePointerActivate() OVERRIDE;
406  virtual void HandleGestureBegin() OVERRIDE;
407  virtual void HandleGestureEnd() OVERRIDE;
408  virtual void RunFileChooser(
409      RenderViewHost* render_view_host,
410      const FileChooserParams& params) OVERRIDE;
411  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
412  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
413  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
414  virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
415  virtual void RequestToLockMouse(bool user_gesture,
416                                  bool last_unlocked_by_target) OVERRIDE;
417  virtual void LostMouseLock() OVERRIDE;
418  virtual void CreateNewWindow(
419      int render_process_id,
420      int route_id,
421      int main_frame_route_id,
422      const ViewHostMsg_CreateWindow_Params& params,
423      SessionStorageNamespace* session_storage_namespace) OVERRIDE;
424  virtual void CreateNewWidget(int render_process_id,
425                               int route_id,
426                               blink::WebPopupType popup_type) OVERRIDE;
427  virtual void CreateNewFullscreenWidget(int render_process_id,
428                                         int route_id) OVERRIDE;
429  virtual void ShowCreatedWindow(int route_id,
430                                 WindowOpenDisposition disposition,
431                                 const gfx::Rect& initial_pos,
432                                 bool user_gesture) OVERRIDE;
433  virtual void ShowCreatedWidget(int route_id,
434                                 const gfx::Rect& initial_pos) OVERRIDE;
435  virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
436  virtual void RequestMediaAccessPermission(
437      const MediaStreamRequest& request,
438      const MediaResponseCallback& callback) OVERRIDE;
439  virtual SessionStorageNamespace* GetSessionStorageNamespace(
440      SiteInstance* instance) OVERRIDE;
441  virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap() OVERRIDE;
442  virtual FrameTree* GetFrameTree() OVERRIDE;
443  virtual void AccessibilityEventReceived(
444      const std::vector<AXEventNotificationDetails>& details) OVERRIDE;
445
446  // NavigatorDelegate ---------------------------------------------------------
447
448  virtual void DidStartProvisionalLoad(
449      RenderFrameHostImpl* render_frame_host,
450      int parent_routing_id,
451      const GURL& validated_url,
452      bool is_error_page,
453      bool is_iframe_srcdoc) OVERRIDE;
454  virtual void DidFailProvisionalLoadWithError(
455      RenderFrameHostImpl* render_frame_host,
456      const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
457      OVERRIDE;
458  virtual void DidFailLoadWithError(
459      RenderFrameHostImpl* render_frame_host,
460      const GURL& url,
461      int error_code,
462      const base::string16& error_description) OVERRIDE;
463  virtual void DidRedirectProvisionalLoad(
464      RenderFrameHostImpl* render_frame_host,
465      const GURL& validated_target_url) OVERRIDE;
466  virtual void DidCommitProvisionalLoad(
467      RenderFrameHostImpl* render_frame_host,
468      const base::string16& frame_unique_name,
469      bool is_main_frame,
470      const GURL& url,
471      PageTransition transition_type) OVERRIDE;
472  virtual void DidNavigateMainFramePreCommit(
473      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
474  virtual void DidNavigateMainFramePostCommit(
475      const LoadCommittedDetails& details,
476      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
477  virtual void DidNavigateAnyFramePostCommit(
478      RenderFrameHostImpl* render_frame_host,
479      const LoadCommittedDetails& details,
480      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
481  virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
482  virtual bool CanOverscrollContent() const OVERRIDE;
483  virtual void NotifyChangedNavigationState(
484      InvalidateTypes changed_flags) OVERRIDE;
485  virtual void AboutToNavigateRenderFrame(
486      RenderFrameHostImpl* render_frame_host) OVERRIDE;
487  virtual void DidStartNavigationToPendingEntry(
488      RenderFrameHostImpl* render_frame_host,
489      const GURL& url,
490      NavigationController::ReloadType reload_type) OVERRIDE;
491  virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
492                              const OpenURLParams& params) OVERRIDE;
493  virtual bool ShouldPreserveAbortedURLs() OVERRIDE;
494
495  // RenderWidgetHostDelegate --------------------------------------------------
496
497  virtual void RenderWidgetDeleted(
498      RenderWidgetHostImpl* render_widget_host) OVERRIDE;
499  virtual bool PreHandleKeyboardEvent(
500      const NativeWebKeyboardEvent& event,
501      bool* is_keyboard_shortcut) OVERRIDE;
502  virtual void HandleKeyboardEvent(
503      const NativeWebKeyboardEvent& event) OVERRIDE;
504  virtual bool HandleWheelEvent(
505      const blink::WebMouseWheelEvent& event) OVERRIDE;
506  virtual bool PreHandleGestureEvent(
507      const blink::WebGestureEvent& event) OVERRIDE;
508  virtual bool HandleGestureEvent(
509      const blink::WebGestureEvent& event) OVERRIDE;
510  virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
511  virtual void OnTouchEmulationEnabled(bool enabled) OVERRIDE;
512#if defined(OS_WIN)
513  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
514#endif
515
516  // RenderFrameHostManager::Delegate ------------------------------------------
517
518  virtual bool CreateRenderViewForRenderManager(
519      RenderViewHost* render_view_host,
520      int opener_route_id,
521      int proxy_routing_id,
522      bool for_main_frame) OVERRIDE;
523  virtual void BeforeUnloadFiredFromRenderManager(
524      bool proceed, const base::TimeTicks& proceed_time,
525      bool* proceed_to_fire_unload) OVERRIDE;
526  virtual void RenderProcessGoneFromRenderManager(
527      RenderViewHost* render_view_host) OVERRIDE;
528  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
529  virtual void CancelModalDialogsForRenderManager() OVERRIDE;
530  virtual void NotifySwappedFromRenderManager(
531      RenderViewHost* old_host, RenderViewHost* new_host) OVERRIDE;
532  virtual int CreateOpenerRenderViewsForRenderManager(
533      SiteInstance* instance) OVERRIDE;
534  virtual NavigationControllerImpl&
535      GetControllerForRenderManager() OVERRIDE;
536  virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
537  virtual NavigationEntry*
538      GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
539  virtual bool FocusLocationBarByDefault() OVERRIDE;
540  virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
541  virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
542  virtual bool IsHidden() OVERRIDE;
543
544  // NotificationObserver ------------------------------------------------------
545
546  virtual void Observe(int type,
547                       const NotificationSource& source,
548                       const NotificationDetails& details) OVERRIDE;
549
550  // NavigationControllerDelegate ----------------------------------------------
551
552  virtual WebContents* GetWebContents() OVERRIDE;
553  virtual void NotifyNavigationEntryCommitted(
554      const LoadCommittedDetails& load_details) OVERRIDE;
555
556  // Invoked before a form repost warning is shown.
557  virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
558
559  // Activate this WebContents and show a form repost warning.
560  virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
561
562  // Whether the initial empty page of this view has been accessed by another
563  // page, making it unsafe to show the pending URL. Always false after the
564  // first commit.
565  virtual bool HasAccessedInitialDocument() OVERRIDE;
566
567  // Updates the max page ID for the current SiteInstance in this
568  // WebContentsImpl to be at least |page_id|.
569  virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
570
571  // Updates the max page ID for the given SiteInstance in this WebContentsImpl
572  // to be at least |page_id|.
573  virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
574                                              int32 page_id) OVERRIDE;
575
576  // Copy the current map of SiteInstance ID to max page ID from another tab.
577  // This is necessary when this tab adopts the NavigationEntries from
578  // |web_contents|.
579  virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
580
581  // Called by the NavigationController to cause the WebContentsImpl to navigate
582  // to the current pending entry. The NavigationController should be called
583  // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
584  // The callbacks can be inside of this function, or at some future time.
585  //
586  // The entry has a PageID of -1 if newly created (corresponding to navigation
587  // to a new URL).
588  //
589  // If this method returns false, then the navigation is discarded (equivalent
590  // to calling DiscardPendingEntry on the NavigationController).
591  virtual bool NavigateToPendingEntry(
592      NavigationController::ReloadType reload_type) OVERRIDE;
593
594  // Sets the history for this WebContentsImpl to |history_length| entries, and
595  // moves the current page_id to the last entry in the list if it's valid.
596  // This is mainly used when a prerendered page is swapped into the current
597  // tab. The method is virtual for testing.
598  virtual void SetHistoryLengthAndPrune(
599      const SiteInstance* site_instance,
600      int merge_history_length,
601      int32 minimum_page_id) OVERRIDE;
602
603  // Called by InterstitialPageImpl when it creates a RenderFrameHost.
604  virtual void RenderFrameForInterstitialPageCreated(
605      RenderFrameHost* render_frame_host) OVERRIDE;
606
607  // Sets the passed interstitial as the currently showing interstitial.
608  // No interstitial page should already be attached.
609  virtual void AttachInterstitialPage(
610      InterstitialPageImpl* interstitial_page) OVERRIDE;
611
612  // Unsets the currently showing interstitial.
613  virtual void DetachInterstitialPage() OVERRIDE;
614
615  // Changes the IsLoading state and notifies the delegate as needed.
616  // |details| is used to provide details on the load that just finished
617  // (but can be null if not applicable).
618  virtual void SetIsLoading(RenderViewHost* render_view_host,
619                            bool is_loading,
620                            bool to_different_document,
621                            LoadNotificationDetails* details) OVERRIDE;
622
623  typedef base::Callback<void(WebContents*)> CreatedCallback;
624
625  // Requests the renderer to select the region between two points in the
626  // currently focused frame.
627  void SelectRange(const gfx::Point& start, const gfx::Point& end);
628
629 private:
630  friend class TestNavigationObserver;
631  friend class WebContentsAddedObserver;
632  friend class WebContentsObserver;
633  friend class WebContents;  // To implement factory methods.
634
635  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
636  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
637  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
638  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
639                           CrossSiteCantPreemptAfterUnload);
640  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
641  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
642  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
643  FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
644  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
645  FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
646  FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
647
648  // So InterstitialPageImpl can access SetIsLoading.
649  friend class InterstitialPageImpl;
650
651  // TODO(brettw) TestWebContents shouldn't exist!
652  friend class TestWebContents;
653
654  class DestructionObserver;
655
656  // See WebContents::Create for a description of these parameters.
657  WebContentsImpl(BrowserContext* browser_context,
658                  WebContentsImpl* opener);
659
660  // Add and remove observers for page navigation notifications. The order in
661  // which notifications are sent to observers is undefined. Clients must be
662  // sure to remove the observer before they go away.
663  void AddObserver(WebContentsObserver* observer);
664  void RemoveObserver(WebContentsObserver* observer);
665
666  // Clears this tab's opener if it has been closed.
667  void OnWebContentsDestroyed(WebContentsImpl* web_contents);
668
669  // Creates and adds to the map a destruction observer watching |web_contents|.
670  // No-op if such an observer already exists.
671  void AddDestructionObserver(WebContentsImpl* web_contents);
672
673  // Deletes and removes from the map a destruction observer
674  // watching |web_contents|. No-op if there is no such observer.
675  void RemoveDestructionObserver(WebContentsImpl* web_contents);
676
677  // Traverses all the RenderFrameHosts in the FrameTree and creates a set
678  // all the unique RenderWidgetHostViews.
679  std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
680
681  // Callback function when showing JavaScript dialogs.  Takes in a routing ID
682  // pair to identify the RenderFrameHost that opened the dialog, because it's
683  // possible for the RenderFrameHost to be deleted by the time this is called.
684  void OnDialogClosed(int render_process_id,
685                      int render_frame_id,
686                      IPC::Message* reply_msg,
687                      bool dialog_was_suppressed,
688                      bool success,
689                      const base::string16& user_input);
690
691  // Callback function when requesting permission to access the PPAPI broker.
692  // |result| is true if permission was granted.
693  void OnPpapiBrokerPermissionResult(int routing_id, bool result);
694
695  bool OnMessageReceived(RenderViewHost* render_view_host,
696                         RenderFrameHost* render_frame_host,
697                         const IPC::Message& message);
698
699  // IPC message handlers.
700  void OnBrandColorChanged(SkColor brand_color);
701  void OnDidLoadResourceFromMemoryCache(const GURL& url,
702                                        const std::string& security_info,
703                                        const std::string& http_request,
704                                        const std::string& mime_type,
705                                        ResourceType::Type resource_type);
706  void OnDidDisplayInsecureContent();
707  void OnDidRunInsecureContent(const std::string& security_origin,
708                               const GURL& target_url);
709  void OnDocumentLoadedInFrame();
710  void OnDidFinishLoad(const GURL& url);
711  void OnDidStartLoading(bool to_different_document);
712  void OnDidStopLoading();
713  void OnDidChangeLoadProgress(double load_progress);
714  void OnGoToEntryAtOffset(int offset);
715  void OnUpdateZoomLimits(int minimum_percent,
716                          int maximum_percent);
717  void OnEnumerateDirectory(int request_id, const base::FilePath& path);
718
719  void OnRegisterProtocolHandler(const std::string& protocol,
720                                 const GURL& url,
721                                 const base::string16& title,
722                                 bool user_gesture);
723  void OnFindReply(int request_id,
724                   int number_of_matches,
725                   const gfx::Rect& selection_rect,
726                   int active_match_ordinal,
727                   bool final_update);
728#if defined(OS_ANDROID)
729  void OnFindMatchRectsReply(int version,
730                             const std::vector<gfx::RectF>& rects,
731                             const gfx::RectF& active_rect);
732
733  void OnOpenDateTimeDialog(
734      const ViewHostMsg_DateTimeDialogValue_Params& value);
735#endif
736  void OnPepperPluginHung(int plugin_child_id,
737                          const base::FilePath& path,
738                          bool is_hung);
739  void OnPluginCrashed(const base::FilePath& plugin_path,
740                       base::ProcessId plugin_pid);
741  void OnDomOperationResponse(const std::string& json_string,
742                              int automation_id);
743  void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
744  void OnOpenColorChooser(int color_chooser_id,
745                          SkColor color,
746                          const std::vector<ColorSuggestion>& suggestions);
747  void OnEndColorChooser(int color_chooser_id);
748  void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
749  void OnWebUISend(const GURL& source_url,
750                   const std::string& name,
751                   const base::ListValue& args);
752  void OnRequestPpapiBrokerPermission(int routing_id,
753                                      const GURL& url,
754                                      const base::FilePath& plugin_path);
755  void OnBrowserPluginMessage(const IPC::Message& message);
756  void OnDidDownloadImage(int id,
757                          int http_status_code,
758                          const GURL& image_url,
759                          const std::vector<SkBitmap>& bitmaps,
760                          const std::vector<gfx::Size>& original_bitmap_sizes);
761  void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
762  void OnFirstVisuallyNonEmptyPaint();
763  void OnMediaPlayingNotification(int64 player_cookie,
764                                  bool has_video,
765                                  bool has_audio);
766  void OnMediaPausedNotification(int64 player_cookie);
767  void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
768                               const base::string16& main_text,
769                               const base::string16& sub_text);
770  void OnHideValidationMessage();
771  void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
772
773  // Called by derived classes to indicate that we're no longer waiting for a
774  // response. This won't actually update the throbber, but it will get picked
775  // up at the next animation step if the throbber is going.
776  void SetNotWaitingForResponse() { waiting_for_response_ = false; }
777
778  // Navigation helpers --------------------------------------------------------
779  //
780  // These functions are helpers for Navigate() and DidNavigate().
781
782  // Handles post-navigation tasks in DidNavigate AFTER the entry has been
783  // committed to the navigation controller. Note that the navigation entry is
784  // not provided since it may be invalid/changed after being committed. The
785  // current navigation entry is in the NavigationController at this point.
786
787  // If our controller was restored, update the max page ID associated with the
788  // given RenderViewHost to be larger than the number of restored entries.
789  // This is called in CreateRenderView before any navigations in the RenderView
790  // have begun, to prevent any races in updating RenderView::next_page_id.
791  void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
792
793  // Saves the given title to the navigation entry and does associated work. It
794  // will update history and the view for the new title, and also synthesize
795  // titles for file URLs that have none (so we require that the URL of the
796  // entry already be set).
797  //
798  // This is used as the backend for state updates, which include a new title,
799  // or the dedicated set title message. It returns true if the new title is
800  // different and was therefore updated.
801  bool UpdateTitleForEntry(NavigationEntryImpl* entry,
802                           const base::string16& title);
803
804  // Recursively creates swapped out RenderViews for this tab's opener chain
805  // (including this tab) in the given SiteInstance, allowing other tabs to send
806  // cross-process JavaScript calls to their opener(s).  Returns the route ID of
807  // this tab's RenderView for |instance|.
808  int CreateOpenerRenderViews(SiteInstance* instance);
809
810  // Helper for CreateNewWidget/CreateNewFullscreenWidget.
811  void CreateNewWidget(int render_process_id,
812                       int route_id,
813                       bool is_fullscreen,
814                       blink::WebPopupType popup_type);
815
816  // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
817  void ShowCreatedWidget(int route_id,
818                         bool is_fullscreen,
819                         const gfx::Rect& initial_pos);
820
821  // Finds the new RenderWidgetHost and returns it. Note that this can only be
822  // called once as this call also removes it from the internal map.
823  RenderWidgetHostView* GetCreatedWidget(int route_id);
824
825  // Finds the new WebContentsImpl by route_id, initializes it for
826  // renderer-initiated creation, and returns it. Note that this can only be
827  // called once as this call also removes it from the internal map.
828  WebContentsImpl* GetCreatedWindow(int route_id);
829
830  // Tracking loading progress -------------------------------------------------
831
832  // Resets the tracking state of the current load.
833  void ResetLoadProgressState();
834
835  // Calculates the progress of the current load and notifies the delegate.
836  void SendLoadProgressChanged();
837
838  // Called once when the last frame on the page has stopped loading.
839  void DidStopLoading(RenderFrameHost* render_frame_host);
840
841  // Misc non-view stuff -------------------------------------------------------
842
843  // Helper functions for sending notifications.
844  void NotifySwapped(RenderViewHost* old_host, RenderViewHost* new_host);
845  void NotifyDisconnected();
846
847  void SetEncoding(const std::string& encoding);
848
849  // TODO(creis): This should take in a FrameTreeNode to know which node's
850  // render manager to return.  For now, we just return the root's.
851  RenderFrameHostManager* GetRenderManager() const;
852
853  RenderViewHostImpl* GetRenderViewHostImpl();
854
855  // Removes browser plugin embedder if there is one.
856  void RemoveBrowserPluginEmbedder();
857
858  // Clear |render_frame_host|'s PowerSaveBlockers.
859  void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
860
861  // Clear all PowerSaveBlockers, leave power_save_blocker_ empty.
862  void ClearAllPowerSaveBlockers();
863
864  // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
865  gfx::Size GetSizeForNewRenderView();
866
867  void OnFrameRemoved(RenderViewHostImpl* render_view_host,
868                      int frame_routing_id);
869
870  // Helper method that's called whenever |preferred_size_| or
871  // |preferred_size_for_capture_| changes, to propagate the new value to the
872  // |delegate_|.
873  void OnPreferredSizeChanged(const gfx::Size& old_size);
874
875  // Adds/removes a callback called on creation of each new WebContents.
876  // Deprecated, about to remove.
877  static void AddCreatedCallback(const CreatedCallback& callback);
878  static void RemoveCreatedCallback(const CreatedCallback& callback);
879
880  // Data for core operation ---------------------------------------------------
881
882  // Delegate for notifying our owner about stuff. Not owned by us.
883  WebContentsDelegate* delegate_;
884
885  // Handles the back/forward list and loading.
886  NavigationControllerImpl controller_;
887
888  // The corresponding view.
889  scoped_ptr<WebContentsView> view_;
890
891  // The view of the RVHD. Usually this is our WebContentsView implementation,
892  // but if an embedder uses a different WebContentsView, they'll need to
893  // provide this.
894  RenderViewHostDelegateView* render_view_host_delegate_view_;
895
896  // Tracks created WebContentsImpl objects that have not been shown yet. They
897  // are identified by the route ID passed to CreateNewWindow.
898  typedef std::map<int, WebContentsImpl*> PendingContents;
899  PendingContents pending_contents_;
900
901  // These maps hold on to the widgets that we created on behalf of the renderer
902  // that haven't shown yet.
903  typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
904  PendingWidgetViews pending_widget_views_;
905
906  typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
907  DestructionObservers destruction_observers_;
908
909  // A list of observers notified when page state changes. Weak references.
910  // This MUST be listed above frame_tree_ since at destruction time the
911  // latter might cause RenderViewHost's destructor to call us and we might use
912  // the observer list then.
913  ObserverList<WebContentsObserver> observers_;
914
915  // The tab that opened this tab, if any.  Will be set to null if the opener
916  // is closed.
917  WebContentsImpl* opener_;
918
919  // True if this tab was opened by another tab. This is not unset if the opener
920  // is closed.
921  bool created_with_opener_;
922
923#if defined(OS_WIN)
924  gfx::NativeViewAccessible accessible_parent_;
925#endif
926
927  // Helper classes ------------------------------------------------------------
928
929  // Maps the RenderFrameHost to its media_player_cookie and PowerSaveBlocker
930  // pairs. Key is the RenderFrameHost, value is the map which maps
931  // player_cookie on to PowerSaveBlocker.
932  typedef std::map<RenderFrameHost*, std::map<int64, PowerSaveBlocker*> >
933      PowerSaveBlockerMap;
934  PowerSaveBlockerMap power_save_blockers_;
935
936  // Manages the frame tree of the page and process swaps in each node.
937  FrameTree frame_tree_;
938
939  // SavePackage, lazily created.
940  scoped_refptr<SavePackage> save_package_;
941
942  // Data for loading state ----------------------------------------------------
943
944  // Indicates whether we're currently loading a resource.
945  bool is_loading_;
946
947  // Indicates whether the current load is to a different document. Only valid
948  // if is_loading_ is true.
949  bool is_load_to_different_document_;
950
951  // Indicates if the tab is considered crashed.
952  base::TerminationStatus crashed_status_;
953  int crashed_error_code_;
954
955  // Whether this WebContents is waiting for a first-response for the
956  // main resource of the page. This controls whether the throbber state is
957  // "waiting" or "loading."
958  bool waiting_for_response_;
959
960  // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
961  // to a given tab and SiteInstance, and must be valid for the lifetime of the
962  // WebContentsImpl.
963  std::map<int32, int32> max_page_ids_;
964
965  // The current load state and the URL associated with it.
966  net::LoadStateWithParam load_state_;
967  base::string16 load_state_host_;
968
969  // LoadingProgressMap maps FrameTreeNode IDs to a double representing that
970  // frame's completion (from 0 to 1).
971  typedef base::hash_map<int64, double> LoadingProgressMap;
972  LoadingProgressMap loading_progresses_;
973  double loading_total_progress_;
974
975  base::TimeTicks loading_last_progress_update_;
976
977  base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
978
979  // Counter to track how many frames have sent start notifications but not
980  // stop notifications.
981  int loading_frames_in_progress_;
982
983  // Upload progress, for displaying in the status bar.
984  // Set to zero when there is no significant upload happening.
985  uint64 upload_size_;
986  uint64 upload_position_;
987
988  // Data for current page -----------------------------------------------------
989
990  // When a title cannot be taken from any entry, this title will be used.
991  base::string16 page_title_when_no_navigation_entry_;
992
993  // When a navigation occurs, we record its contents MIME type. It can be
994  // used to check whether we can do something for some special contents.
995  std::string contents_mime_type_;
996
997  // The last reported character encoding, not canonicalized.
998  std::string last_reported_encoding_;
999
1000  // The canonicalized character encoding.
1001  std::string canonical_encoding_;
1002
1003  // True if this is a secure page which displayed insecure content.
1004  bool displayed_insecure_content_;
1005
1006  // Whether the initial empty page has been accessed by another page, making it
1007  // unsafe to show the pending URL. Usually false unless another window tries
1008  // to modify the blank page.  Always false after the first commit.
1009  bool has_accessed_initial_document_;
1010
1011  // Data for misc internal state ----------------------------------------------
1012
1013  // When > 0, the WebContents is currently being captured (e.g., for
1014  // screenshots or mirroring); and the underlying RenderWidgetHost should not
1015  // be told it is hidden.
1016  int capturer_count_;
1017
1018  // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1019  bool should_normally_be_visible_;
1020
1021  // See getter above.
1022  bool is_being_destroyed_;
1023
1024  // Indicates whether we should notify about disconnection of this
1025  // WebContentsImpl. This is used to ensure disconnection notifications only
1026  // happen if a connection notification has happened and that they happen only
1027  // once.
1028  bool notify_disconnection_;
1029
1030  // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1031  // delegate of this WebContentsImpl is nulled before its destructor is called.
1032  JavaScriptDialogManager* dialog_manager_;
1033
1034  // Set to true when there is an active "before unload" dialog.  When true,
1035  // we've forced the throbber to start in Navigate, and we need to remember to
1036  // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1037  bool is_showing_before_unload_dialog_;
1038
1039  // Settings that get passed to the renderer process.
1040  RendererPreferences renderer_preferences_;
1041
1042  // The time that this WebContents was last made active. The initial value is
1043  // the WebContents creation time.
1044  base::TimeTicks last_active_time_;
1045
1046  // See description above setter.
1047  bool closed_by_user_gesture_;
1048
1049  // Minimum/maximum zoom percent.
1050  int minimum_zoom_percent_;
1051  int maximum_zoom_percent_;
1052
1053  // The raw accumulated zoom value and the actual zoom increments made for an
1054  // an in-progress pinch gesture.
1055  float totalPinchGestureAmount_;
1056  int currentPinchZoomStepDelta_;
1057
1058  // The intrinsic size of the page.
1059  gfx::Size preferred_size_;
1060
1061  // The preferred size for content screen capture.  When |capturer_count_| > 0,
1062  // this overrides |preferred_size_|.
1063  gfx::Size preferred_size_for_capture_;
1064
1065#if defined(OS_ANDROID)
1066  // Date time chooser opened by this tab.
1067  // Only used in Android since all other platforms use a multi field UI.
1068  scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1069#endif
1070
1071  // Holds information about a current color chooser dialog, if one is visible.
1072  struct ColorChooserInfo {
1073    ColorChooserInfo(int render_process_id,
1074                     int render_frame_id,
1075                     ColorChooser* chooser,
1076                     int identifier);
1077    ~ColorChooserInfo();
1078
1079    int render_process_id;
1080    int render_frame_id;
1081
1082    // Color chooser that was opened by this tab.
1083    scoped_ptr<ColorChooser> chooser;
1084
1085    // A unique identifier for the current color chooser.  Identifiers are
1086    // unique across a renderer process.  This avoids race conditions in
1087    // synchronizing the browser and renderer processes.  For example, if a
1088    // renderer closes one chooser and opens another, and simultaneously the
1089    // user picks a color in the first chooser, the IDs can be used to drop the
1090    // "chose a color" message rather than erroneously tell the renderer that
1091    // the user picked a color in the second chooser.
1092    int identifier;
1093  };
1094
1095  scoped_ptr<ColorChooserInfo> color_chooser_info_;
1096
1097  // Manages the embedder state for browser plugins, if this WebContents is an
1098  // embedder; NULL otherwise.
1099  scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1100  // Manages the guest state for browser plugin, if this WebContents is a guest;
1101  // NULL otherwise.
1102  scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1103
1104  // This must be at the end, or else we might get notifications and use other
1105  // member variables that are gone.
1106  NotificationRegistrar registrar_;
1107
1108  // Used during IPC message dispatching from the RenderView/RenderFrame so that
1109  // the handlers can get a pointer to the RVH through which the message was
1110  // received.
1111  RenderViewHost* render_view_message_source_;
1112  RenderFrameHost* render_frame_message_source_;
1113
1114  // All live RenderWidgetHostImpls that are created by this object and may
1115  // outlive it.
1116  std::set<RenderWidgetHostImpl*> created_widgets_;
1117
1118  // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1119  int fullscreen_widget_routing_id_;
1120
1121  // Maps the ids of pending image downloads to their callbacks
1122  typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1123  ImageDownloadMap image_download_map_;
1124
1125  // Whether this WebContents is responsible for displaying a subframe in a
1126  // different process from its parent page.
1127  bool is_subframe_;
1128
1129  // Whether touch emulation is enabled in RenderWidgetHost.
1130  bool touch_emulation_enabled_;
1131
1132  // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1133  bool last_dialog_suppressed_;
1134
1135  scoped_ptr<GeolocationDispatcherHost> geolocation_dispatcher_host_;
1136
1137  scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
1138
1139  scoped_ptr<ScreenOrientationDispatcherHost>
1140      screen_orientation_dispatcher_host_;
1141
1142  DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1143};
1144
1145}  // namespace content
1146
1147#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
1148