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      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_RENDERER_RENDER_VIEW_IMPL_H_
      6 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
      7 
      8 #include <deque>
      9 #include <map>
     10 #include <set>
     11 #include <string>
     12 #include <vector>
     13 
     14 #include "base/basictypes.h"
     15 #include "base/gtest_prod_util.h"
     16 #include "base/id_map.h"
     17 #include "base/memory/linked_ptr.h"
     18 #include "base/memory/weak_ptr.h"
     19 #include "base/observer_list.h"
     20 #include "base/process/process.h"
     21 #include "base/strings/string16.h"
     22 #include "base/timer/timer.h"
     23 #include "build/build_config.h"
     24 #include "cc/input/top_controls_state.h"
     25 #include "cc/resources/shared_bitmap.h"
     26 #include "content/common/content_export.h"
     27 #include "content/common/drag_event_source_info.h"
     28 #include "content/common/edit_command.h"
     29 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
     30 #include "content/common/navigation_gesture.h"
     31 #include "content/common/view_message_enums.h"
     32 #include "content/public/common/page_zoom.h"
     33 #include "content/public/common/referrer.h"
     34 #include "content/public/common/renderer_preferences.h"
     35 #include "content/public/common/stop_find_action.h"
     36 #include "content/public/common/top_controls_state.h"
     37 #include "content/public/renderer/render_view.h"
     38 #include "content/renderer/mouse_lock_dispatcher.h"
     39 #include "content/renderer/render_frame_impl.h"
     40 #include "content/renderer/render_widget.h"
     41 #include "content/renderer/renderer_date_time_picker.h"
     42 #include "content/renderer/stats_collection_observer.h"
     43 #include "ipc/ipc_platform_file.h"
     44 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
     45 #include "third_party/WebKit/public/web/WebAXObject.h"
     46 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
     47 #include "third_party/WebKit/public/web/WebDataSource.h"
     48 #include "third_party/WebKit/public/web/WebElement.h"
     49 #include "third_party/WebKit/public/web/WebHistoryItem.h"
     50 #include "third_party/WebKit/public/web/WebIconURL.h"
     51 #include "third_party/WebKit/public/web/WebInputEvent.h"
     52 #include "third_party/WebKit/public/web/WebNavigationType.h"
     53 #include "third_party/WebKit/public/web/WebNode.h"
     54 #include "third_party/WebKit/public/web/WebPageSerializerClient.h"
     55 #include "third_party/WebKit/public/web/WebPageVisibilityState.h"
     56 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
     57 #include "third_party/WebKit/public/web/WebViewClient.h"
     58 #include "ui/base/window_open_disposition.h"
     59 #include "ui/surface/transport_dib.h"
     60 #include "webkit/common/webpreferences.h"
     61 
     62 #if defined(OS_ANDROID)
     63 #include "content/renderer/android/content_detector.h"
     64 #include "third_party/WebKit/public/web/WebContentDetectionResult.h"
     65 #endif
     66 
     67 #if defined(COMPILER_MSVC)
     68 // RenderViewImpl is a diamond-shaped hierarchy, with WebWidgetClient at the
     69 // root. VS warns when we inherit the WebWidgetClient method implementations
     70 // from RenderWidget.  It's safe to ignore that warning.
     71 #pragma warning(disable: 4250)
     72 #endif
     73 
     74 class PepperDeviceTest;
     75 class SkBitmap;
     76 struct PP_NetAddress_Private;
     77 struct FrameMsg_Navigate_Params;
     78 struct ViewMsg_PostMessage_Params;
     79 struct ViewMsg_StopFinding_Params;
     80 
     81 namespace base {
     82 class CommandLine;
     83 }
     84 
     85 namespace ui {
     86 struct SelectedFileInfo;
     87 }  // namespace ui
     88 
     89 namespace blink {
     90 class WebApplicationCacheHost;
     91 class WebApplicationCacheHostClient;
     92 class WebDOMMessageEvent;
     93 class WebDataSource;
     94 class WebDateTimeChooserCompletion;
     95 class WebDragData;
     96 class WebGestureEvent;
     97 class WebIconURL;
     98 class WebImage;
     99 class WebPeerConnection00Handler;
    100 class WebPeerConnection00HandlerClient;
    101 class WebMouseEvent;
    102 class WebPeerConnectionHandler;
    103 class WebPeerConnectionHandlerClient;
    104 class WebSocketStreamHandle;
    105 class WebSpeechRecognizer;
    106 class WebStorageNamespace;
    107 class WebTouchEvent;
    108 class WebURLRequest;
    109 struct WebActiveWheelFlingParameters;
    110 struct WebDateTimeChooserParams;
    111 struct WebFileChooserParams;
    112 struct WebFindOptions;
    113 struct WebMediaPlayerAction;
    114 struct WebPluginAction;
    115 struct WebPoint;
    116 struct WebWindowFeatures;
    117 
    118 #if defined(OS_ANDROID)
    119 class WebHitTestResult;
    120 #endif
    121 }
    122 
    123 namespace webkit_glue {
    124 class WebURLResponseExtraDataImpl;
    125 }
    126 
    127 namespace content {
    128 class BrowserPluginManager;
    129 class DevToolsAgent;
    130 class DocumentState;
    131 class ExternalPopupMenu;
    132 class FaviconHelper;
    133 class HistoryController;
    134 class HistoryEntry;
    135 class ImageResourceFetcher;
    136 class MediaStreamDispatcher;
    137 class MouseLockDispatcher;
    138 class NavigationState;
    139 class PepperPluginInstanceImpl;
    140 class PushMessagingDispatcher;
    141 class RenderViewObserver;
    142 class RenderViewTest;
    143 class RendererAccessibility;
    144 class RendererDateTimePicker;
    145 class RendererWebColorChooserImpl;
    146 class SpeechRecognitionDispatcher;
    147 class WebPluginDelegateProxy;
    148 struct DropData;
    149 struct FaviconURL;
    150 struct FileChooserParams;
    151 struct RenderViewImplParams;
    152 
    153 #if defined(OS_ANDROID)
    154 class WebMediaPlayerProxyAndroid;
    155 #endif
    156 
    157 //
    158 // RenderView is an object that manages a WebView object, and provides a
    159 // communication interface with an embedding application process
    160 //
    161 class CONTENT_EXPORT RenderViewImpl
    162     : public RenderWidget,
    163       NON_EXPORTED_BASE(public blink::WebViewClient),
    164       NON_EXPORTED_BASE(public blink::WebPageSerializerClient),
    165       public RenderView,
    166       public base::SupportsWeakPtr<RenderViewImpl> {
    167  public:
    168   // Creates a new RenderView. |opener_id| is the routing ID of the RenderView
    169   // responsible for creating this RenderView. Note that if the original opener
    170   // has been closed, |window_was_created_with_opener| will be true and
    171   // |opener_id| will be MSG_ROUTING_NONE. When |swapped_out| is true, the
    172   // |proxy_routing_id| is specified, so a RenderFrameProxy can be created for
    173   // this RenderView's main RenderFrame.
    174   static RenderViewImpl* Create(int32 opener_id,
    175                                 bool window_was_created_with_opener,
    176                                 const RendererPreferences& renderer_prefs,
    177                                 const WebPreferences& webkit_prefs,
    178                                 int32 routing_id,
    179                                 int32 main_frame_routing_id,
    180                                 int32 surface_id,
    181                                 int64 session_storage_namespace_id,
    182                                 const base::string16& frame_name,
    183                                 bool is_renderer_created,
    184                                 bool swapped_out,
    185                                 int32 proxy_routing_id,
    186                                 bool hidden,
    187                                 bool never_visible,
    188                                 int32 next_page_id,
    189                                 const blink::WebScreenInfo& screen_info,
    190                                 AccessibilityMode accessibility_mode);
    191 
    192   // Used by content_layouttest_support to hook into the creation of
    193   // RenderViewImpls.
    194   static void InstallCreateHook(
    195       RenderViewImpl* (*create_render_view_impl)(RenderViewImplParams*));
    196 
    197   // Returns the RenderViewImpl containing the given WebView.
    198   static RenderViewImpl* FromWebView(blink::WebView* webview);
    199 
    200   // Returns the RenderViewImpl for the given routing ID.
    201   static RenderViewImpl* FromRoutingID(int routing_id);
    202 
    203   static size_t GetRenderViewCount();
    204 
    205   // May return NULL when the view is closing.
    206   blink::WebView* webview() const;
    207 
    208   int history_list_offset() const { return history_list_offset_; }
    209 
    210   const WebPreferences& webkit_preferences() const {
    211     return webkit_preferences_;
    212   }
    213 
    214   const RendererPreferences& renderer_preferences() const {
    215     return renderer_preferences_;
    216   }
    217 
    218   void set_send_content_state_immediately(bool value) {
    219     send_content_state_immediately_ = value;
    220   }
    221 
    222   RenderFrameImpl* main_render_frame() { return main_render_frame_.get(); }
    223 
    224   // TODO(jam): move to RenderFrameImpl
    225   MediaStreamDispatcher* media_stream_dispatcher() {
    226     return media_stream_dispatcher_;
    227   }
    228 
    229   AccessibilityMode accessibility_mode() {
    230     return accessibility_mode_;
    231   }
    232 
    233   RendererAccessibility* renderer_accessibility() {
    234     return renderer_accessibility_;
    235   }
    236 
    237   MouseLockDispatcher* mouse_lock_dispatcher() {
    238     return mouse_lock_dispatcher_;
    239   }
    240 
    241   HistoryController* history_controller() {
    242     return history_controller_.get();
    243   }
    244 
    245   // Lazily initialize this view's BrowserPluginManager and return it.
    246   BrowserPluginManager* GetBrowserPluginManager();
    247 
    248   // Functions to add and remove observers for this object.
    249   void AddObserver(RenderViewObserver* observer);
    250   void RemoveObserver(RenderViewObserver* observer);
    251 
    252   // Returns the StatsCollectionObserver associated with this view, or NULL
    253   // if one wasn't created;
    254   StatsCollectionObserver* GetStatsCollectionObserver() {
    255     return stats_collection_observer_.get();
    256   }
    257 
    258   // Adds the given file chooser request to the file_chooser_completion_ queue
    259   // (see that var for more) and requests the chooser be displayed if there are
    260   // no other waiting items in the queue.
    261   //
    262   // Returns true if the chooser was successfully scheduled. False means we
    263   // didn't schedule anything.
    264   bool ScheduleFileChooser(const FileChooserParams& params,
    265                            blink::WebFileChooserCompletion* completion);
    266 
    267 #if defined(OS_ANDROID)
    268   void DismissDateTimeDialog();
    269 #endif
    270 #if defined(OS_MACOSX) || defined(OS_ANDROID)
    271   void DidHideExternalPopupMenu();
    272 #endif
    273 
    274   bool is_loading() const { return frames_in_progress_ != 0; }
    275 
    276   void FrameDidStartLoading(blink::WebFrame* frame);
    277   void FrameDidStopLoading(blink::WebFrame* frame);
    278 
    279   // Plugin-related functions --------------------------------------------------
    280 
    281 #if defined(ENABLE_PLUGINS)
    282   // Get/set the plugin which will be used as to handle document find requests.
    283   void set_plugin_find_handler(PepperPluginInstanceImpl* plugin) {
    284     plugin_find_handler_ = plugin;
    285   }
    286   PepperPluginInstanceImpl* plugin_find_handler() {
    287     return plugin_find_handler_;
    288   }
    289 
    290   PepperPluginInstanceImpl* focused_pepper_plugin() {
    291     return focused_pepper_plugin_;
    292   }
    293   PepperPluginInstanceImpl* pepper_last_mouse_event_target() {
    294     return pepper_last_mouse_event_target_;
    295   }
    296   void set_pepper_last_mouse_event_target(PepperPluginInstanceImpl* plugin) {
    297     pepper_last_mouse_event_target_ = plugin;
    298   }
    299 
    300 #if defined(OS_MACOSX) || defined(OS_WIN)
    301   // Informs the render view that the given plugin has gained or lost focus.
    302   void PluginFocusChanged(bool focused, int plugin_id);
    303 #endif
    304 
    305 #if defined(OS_MACOSX)
    306   // Starts plugin IME.
    307   void StartPluginIme();
    308 #endif
    309 
    310   // Indicates that the given instance has been created.
    311   void PepperInstanceCreated(PepperPluginInstanceImpl* instance);
    312 
    313   // Indicates that the given instance is being destroyed. This is called from
    314   // the destructor, so it's important that the instance is not dereferenced
    315   // from this call.
    316   void PepperInstanceDeleted(PepperPluginInstanceImpl* instance);
    317 
    318   // Notification that the given plugin is focused or unfocused.
    319   void PepperFocusChanged(PepperPluginInstanceImpl* instance, bool focused);
    320 
    321   void RegisterPluginDelegate(WebPluginDelegateProxy* delegate);
    322   void UnregisterPluginDelegate(WebPluginDelegateProxy* delegate);
    323 #endif  // ENABLE_PLUGINS
    324 
    325   void TransferActiveWheelFlingAnimation(
    326       const blink::WebActiveWheelFlingParameters& params);
    327 
    328   // Returns true if the focused element is editable text from the perspective
    329   // of IME support (also used for on-screen keyboard). Works correctly inside
    330   // supported PPAPI plug-ins.
    331   bool HasIMETextFocus();
    332 
    333   // Callback for use with GetWindowSnapshot.
    334   typedef base::Callback<void(
    335       const gfx::Size&, const std::vector<unsigned char>&)>
    336       WindowSnapshotCallback;
    337 
    338   void GetWindowSnapshot(const WindowSnapshotCallback& callback);
    339 
    340   // Dispatches the current navigation state to the browser. Called on a
    341   // periodic timer so we don't send too many messages.
    342   void SyncNavigationState();
    343 
    344   // Returns the length of the session history of this RenderView. Note that
    345   // this only coincides with the actual length of the session history if this
    346   // RenderView is the currently active RenderView of a WebContents.
    347   unsigned GetLocalSessionHistoryLengthForTesting() const;
    348 
    349   // Invokes OnSetFocus and marks the widget as active depending on the value
    350   // of |enable|. This is used for layout tests that need to control the focus
    351   // synchronously from the renderer.
    352   void SetFocusAndActivateForTesting(bool enable);
    353 
    354   // Change the device scale factor and force the compositor to resize.
    355   void SetDeviceScaleFactorForTesting(float factor);
    356 
    357   // Change screen orientation and force the compositor to resize.
    358   void SetScreenOrientationForTesting(
    359       const blink::WebScreenOrientationType& orientation);
    360 
    361   // Change the device ICC color profile while running a layout test.
    362   void SetDeviceColorProfileForTesting(const std::vector<char>& color_profile);
    363 
    364   // Used to force the size of a window when running layout tests.
    365   void ForceResizeForTesting(const gfx::Size& new_size);
    366 
    367   void UseSynchronousResizeModeForTesting(bool enable);
    368 
    369   // Control autoresize mode.
    370   void EnableAutoResizeForTesting(const gfx::Size& min_size,
    371                                   const gfx::Size& max_size);
    372   void DisableAutoResizeForTesting(const gfx::Size& new_size);
    373 
    374   // IPC::Listener implementation ----------------------------------------------
    375 
    376   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
    377 
    378   // blink::WebWidgetClient implementation ------------------------------------
    379 
    380   // Most methods are handled by RenderWidget.
    381   virtual void didFocus();
    382   virtual void didBlur();
    383   virtual void show(blink::WebNavigationPolicy policy);
    384   virtual void runModal();
    385   virtual bool enterFullScreen();
    386   virtual void exitFullScreen();
    387   virtual bool requestPointerLock();
    388   virtual void requestPointerUnlock();
    389   virtual bool isPointerLocked();
    390   virtual void didHandleGestureEvent(const blink::WebGestureEvent& event,
    391                                      bool event_cancelled) OVERRIDE;
    392   virtual void initializeLayerTreeView() OVERRIDE;
    393 
    394   // blink::WebViewClient implementation --------------------------------------
    395 
    396   virtual blink::WebView* createView(blink::WebLocalFrame* creator,
    397                                      const blink::WebURLRequest& request,
    398                                      const blink::WebWindowFeatures& features,
    399                                      const blink::WebString& frame_name,
    400                                      blink::WebNavigationPolicy policy,
    401                                      bool suppress_opener);
    402   virtual blink::WebWidget* createPopupMenu(blink::WebPopupType popup_type);
    403   virtual blink::WebExternalPopupMenu* createExternalPopupMenu(
    404       const blink::WebPopupMenuInfo& popup_menu_info,
    405       blink::WebExternalPopupMenuClient* popup_menu_client);
    406   virtual blink::WebStorageNamespace* createSessionStorageNamespace();
    407   virtual void printPage(blink::WebLocalFrame* frame);
    408   virtual bool enumerateChosenDirectory(
    409       const blink::WebString& path,
    410       blink::WebFileChooserCompletion* chooser_completion);
    411   virtual void didCancelCompositionOnSelectionChange();
    412   virtual bool handleCurrentKeyboardEvent();
    413   virtual bool runFileChooser(
    414       const blink::WebFileChooserParams& params,
    415       blink::WebFileChooserCompletion* chooser_completion);
    416   virtual void showValidationMessage(const blink::WebRect& anchor_in_root_view,
    417                                      const blink::WebString& main_text,
    418                                      const blink::WebString& sub_text,
    419                                      blink::WebTextDirection hint) OVERRIDE;
    420   virtual void hideValidationMessage() OVERRIDE;
    421   virtual void moveValidationMessage(
    422       const blink::WebRect& anchor_in_root_view) OVERRIDE;
    423   virtual void setStatusText(const blink::WebString& text);
    424   virtual void setMouseOverURL(const blink::WebURL& url);
    425   virtual void setKeyboardFocusURL(const blink::WebURL& url);
    426   virtual void startDragging(blink::WebLocalFrame* frame,
    427                              const blink::WebDragData& data,
    428                              blink::WebDragOperationsMask mask,
    429                              const blink::WebImage& image,
    430                              const blink::WebPoint& imageOffset);
    431   virtual bool acceptsLoadDrops();
    432   virtual void focusNext();
    433   virtual void focusPrevious();
    434   virtual void focusedNodeChanged(const blink::WebNode& node);
    435   virtual void didUpdateLayout();
    436 #if defined(OS_ANDROID)
    437   virtual bool didTapMultipleTargets(
    438       const blink::WebGestureEvent& event,
    439       const blink::WebVector<blink::WebRect>& target_rects);
    440 #endif
    441   virtual blink::WebString acceptLanguages();
    442   virtual void navigateBackForwardSoon(int offset);
    443   virtual int historyBackListCount();
    444   virtual int historyForwardListCount();
    445   virtual void postAccessibilityEvent(
    446       const blink::WebAXObject& obj, blink::WebAXEvent event);
    447   virtual void didUpdateInspectorSetting(const blink::WebString& key,
    448                                          const blink::WebString& value);
    449   virtual blink::WebSpeechRecognizer* speechRecognizer();
    450   virtual void zoomLimitsChanged(double minimum_level, double maximum_level);
    451   virtual void zoomLevelChanged();
    452   virtual double zoomLevelToZoomFactor(double zoom_level) const;
    453   virtual double zoomFactorToZoomLevel(double factor) const;
    454   virtual void registerProtocolHandler(const blink::WebString& scheme,
    455                                        const blink::WebURL& base_url,
    456                                        const blink::WebURL& url,
    457                                        const blink::WebString& title);
    458   virtual blink::WebPageVisibilityState visibilityState() const;
    459   virtual blink::WebPushClient* webPushClient();
    460   virtual void draggableRegionsChanged();
    461 
    462 #if defined(OS_ANDROID)
    463   virtual void scheduleContentIntent(const blink::WebURL& intent);
    464   virtual void cancelScheduledContentIntents();
    465   virtual blink::WebContentDetectionResult detectContentAround(
    466       const blink::WebHitTestResult& touch_hit);
    467 
    468   // Only used on Android since all other platforms implement
    469   // date and time input fields using MULTIPLE_FIELDS_UI
    470   virtual bool openDateTimeChooser(const blink::WebDateTimeChooserParams&,
    471                                    blink::WebDateTimeChooserCompletion*);
    472   virtual void didScrollWithKeyboard(const blink::WebSize& delta);
    473 #endif
    474 
    475   // blink::WebPageSerializerClient implementation ----------------------------
    476 
    477   virtual void didSerializeDataForFrame(
    478       const blink::WebURL& frame_url,
    479       const blink::WebCString& data,
    480       PageSerializationStatus status) OVERRIDE;
    481 
    482   // RenderView implementation -------------------------------------------------
    483 
    484   virtual bool Send(IPC::Message* message) OVERRIDE;
    485   virtual RenderFrame* GetMainRenderFrame() OVERRIDE;
    486   virtual int GetRoutingID() const OVERRIDE;
    487   virtual int GetPageId() const OVERRIDE;
    488   virtual gfx::Size GetSize() const OVERRIDE;
    489   virtual WebPreferences& GetWebkitPreferences() OVERRIDE;
    490   virtual void SetWebkitPreferences(const WebPreferences& preferences) OVERRIDE;
    491   virtual blink::WebView* GetWebView() OVERRIDE;
    492   virtual blink::WebElement GetFocusedElement() const OVERRIDE;
    493   virtual bool IsEditableNode(const blink::WebNode& node) const OVERRIDE;
    494   virtual bool ShouldDisplayScrollbars(int width, int height) const OVERRIDE;
    495   virtual int GetEnabledBindings() const OVERRIDE;
    496   virtual bool GetContentStateImmediately() const OVERRIDE;
    497   virtual blink::WebPageVisibilityState GetVisibilityState() const OVERRIDE;
    498   virtual void DidStartLoading() OVERRIDE;
    499   virtual void DidStopLoading() OVERRIDE;
    500   virtual void Repaint(const gfx::Size& size) OVERRIDE;
    501   virtual void SetEditCommandForNextKeyEvent(const std::string& name,
    502                                              const std::string& value) OVERRIDE;
    503   virtual void ClearEditCommands() OVERRIDE;
    504   virtual SSLStatus GetSSLStatusOfFrame(blink::WebFrame* frame) const OVERRIDE;
    505   virtual const std::string& GetAcceptLanguages() const OVERRIDE;
    506 #if defined(OS_ANDROID)
    507   virtual void UpdateTopControlsState(TopControlsState constraints,
    508                                       TopControlsState current,
    509                                       bool animate) OVERRIDE;
    510 #endif
    511   bool uses_temporary_zoom_level() const { return uses_temporary_zoom_level_; }
    512 
    513   // Please do not add your stuff randomly to the end here. If there is an
    514   // appropriate section, add it there. If not, there are some random functions
    515   // nearer to the top you can add it to.
    516 
    517   // Cannot use std::set unfortunately since linked_ptr<> does not support
    518   // operator<.
    519   typedef std::vector<linked_ptr<ImageResourceFetcher> >
    520       ImageResourceFetcherList;
    521 
    522  protected:
    523   // RenderWidget overrides:
    524   virtual void OnClose() OVERRIDE;
    525   virtual void Close() OVERRIDE;
    526   virtual void OnResize(const ViewMsg_Resize_Params& params) OVERRIDE;
    527   virtual void DidInitiatePaint() OVERRIDE;
    528   virtual void DidFlushPaint() OVERRIDE;
    529   virtual gfx::Vector2d GetScrollOffset() OVERRIDE;
    530   virtual void DidHandleKeyEvent() OVERRIDE;
    531   virtual bool WillHandleMouseEvent(
    532       const blink::WebMouseEvent& event) OVERRIDE;
    533   virtual bool WillHandleGestureEvent(
    534       const blink::WebGestureEvent& event) OVERRIDE;
    535   virtual void DidHandleMouseEvent(const blink::WebMouseEvent& event) OVERRIDE;
    536   virtual void DidHandleTouchEvent(const blink::WebTouchEvent& event) OVERRIDE;
    537   virtual bool HasTouchEventHandlersAt(const gfx::Point& point) const OVERRIDE;
    538   virtual void OnSetFocus(bool enable) OVERRIDE;
    539   virtual void OnWasHidden() OVERRIDE;
    540   virtual void OnWasShown(bool needs_repainting) OVERRIDE;
    541   virtual GURL GetURLForGraphicsContext3D() OVERRIDE;
    542   virtual void OnImeSetComposition(
    543       const base::string16& text,
    544       const std::vector<blink::WebCompositionUnderline>& underlines,
    545       int selection_start,
    546       int selection_end) OVERRIDE;
    547   virtual void OnImeConfirmComposition(const base::string16& text,
    548                                        const gfx::Range& replacement_range,
    549                                        bool keep_selection) OVERRIDE;
    550   virtual void SetDeviceScaleFactor(float device_scale_factor) OVERRIDE;
    551   virtual bool SetDeviceColorProfile(
    552       const std::vector<char>& color_profile) OVERRIDE;
    553   virtual void OnOrientationChange() OVERRIDE;
    554   virtual ui::TextInputType GetTextInputType() OVERRIDE;
    555   virtual void GetSelectionBounds(gfx::Rect* start, gfx::Rect* end) OVERRIDE;
    556 #if defined(OS_MACOSX) || defined(USE_AURA)
    557   virtual void GetCompositionCharacterBounds(
    558       std::vector<gfx::Rect>* character_bounds) OVERRIDE;
    559   virtual void GetCompositionRange(gfx::Range* range) OVERRIDE;
    560 #endif
    561   virtual bool CanComposeInline() OVERRIDE;
    562   virtual void DidCommitCompositorFrame() OVERRIDE;
    563   virtual void InstrumentWillBeginFrame(int frame_id) OVERRIDE;
    564   virtual void InstrumentDidBeginFrame() OVERRIDE;
    565   virtual void InstrumentDidCancelFrame() OVERRIDE;
    566   virtual void InstrumentWillComposite() OVERRIDE;
    567 
    568  protected:
    569   explicit RenderViewImpl(RenderViewImplParams* params);
    570 
    571   void Initialize(RenderViewImplParams* params);
    572   virtual void SetScreenMetricsEmulationParameters(
    573       float device_scale_factor,
    574       const gfx::Point& root_layer_offset,
    575       float root_layer_scale) OVERRIDE;
    576 
    577   // Do not delete directly.  This class is reference counted.
    578   virtual ~RenderViewImpl();
    579 
    580  private:
    581   // For unit tests.
    582   friend class ExternalPopupMenuTest;
    583   friend class PepperDeviceTest;
    584   friend class RendererAccessibilityTest;
    585   friend class RenderViewTest;
    586 
    587   // TODO(nasko): Temporarily friend RenderFrameImpl, so we don't duplicate
    588   // utility functions needed in both classes, while we move frame specific
    589   // code away from this class.
    590   friend class RenderFrameImpl;
    591 
    592   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuRemoveTest, RemoveOnChange);
    593   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuTest, NormalCase);
    594   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuTest, ShowPopupThenNavigate);
    595   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, DecideNavigationPolicyForWebUI);
    596   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    597                            DidFailProvisionalLoadWithErrorForError);
    598   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    599                            DidFailProvisionalLoadWithErrorForCancellation);
    600   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    601                            DontIgnoreBackAfterNavEntryLimit);
    602   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ImeComposition);
    603   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, InsertCharacters);
    604   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, JSBlockSentAfterPageLoad);
    605   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, LastCommittedUpdateState);
    606   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnHandleKeyboardEvent);
    607   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnImeTypeChanged);
    608   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavStateChanged);
    609   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnSetAccessibilityMode);
    610   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnSetTextDirection);
    611   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnUpdateWebPreferences);
    612   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    613                            SetEditableSelectionAndComposition);
    614   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, StaleNavigationsIgnored);
    615   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, UpdateTargetURLWithInvalidURL);
    616   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    617                            GetCompositionCharacterBoundsTest);
    618   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavigationHttpPost);
    619   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    620                            DecideNavigationPolicyHandlesAllTopLevel);
    621 #if defined(OS_MACOSX)
    622   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, MacTestCmdUp);
    623 #endif
    624   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SetHistoryLengthAndPrune);
    625   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ZoomLimit);
    626   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, NavigateFrame);
    627   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, BasicRenderFrame);
    628   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, TextInputTypeWithPepper);
    629   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
    630                            MessageOrderInDidChangeSelection);
    631   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SendCandidateWindowEvents);
    632   FRIEND_TEST_ALL_PREFIXES(SuppressErrorPageTest, Suppresses);
    633   FRIEND_TEST_ALL_PREFIXES(SuppressErrorPageTest, DoesNotSuppress);
    634 
    635   typedef std::map<GURL, double> HostZoomLevels;
    636 
    637   enum ErrorPageType {
    638     DNS_ERROR,
    639     HTTP_404,
    640     CONNECTION_ERROR,
    641   };
    642 
    643   // Old WebFrameClient implementations ----------------------------------------
    644 
    645   // RenderViewImpl used to be a WebFrameClient, but now RenderFrameImpl is the
    646   // WebFrameClient. However, many implementations of WebFrameClient methods
    647   // still live here and are called from RenderFrameImpl. These implementations
    648   // are to be moved to RenderFrameImpl <http://crbug.com/361761>.
    649 
    650   void didCreateDataSource(blink::WebLocalFrame* frame,
    651                            blink::WebDataSource* datasource);
    652   void didClearWindowObject(blink::WebLocalFrame* frame);
    653   void didChangeIcon(blink::WebLocalFrame*, blink::WebIconURL::Type);
    654   void didUpdateCurrentHistoryItem(blink::WebLocalFrame* frame);
    655   void didChangeScrollOffset(blink::WebLocalFrame* frame);
    656 
    657   static bool IsReload(const FrameMsg_Navigate_Params& params);
    658 
    659   static Referrer GetReferrerFromRequest(
    660       blink::WebFrame* frame,
    661       const blink::WebURLRequest& request);
    662 
    663   static WindowOpenDisposition NavigationPolicyToDisposition(
    664       blink::WebNavigationPolicy policy);
    665 
    666   void UpdateSessionHistory(blink::WebFrame* frame);
    667   void SendUpdateState(HistoryEntry* entry);
    668 
    669   // Sends a message and runs a nested message loop.
    670   bool SendAndRunNestedMessageLoop(IPC::SyncMessage* message);
    671 
    672   // Called when the "pinned to left/right edge" state needs to be updated.
    673   void UpdateScrollState(blink::WebFrame* frame);
    674 
    675   // IPC message handlers ------------------------------------------------------
    676   //
    677   // The documentation for these functions should be in
    678   // content/common/*_messages.h for the message that the function is handling.
    679   void OnExecuteEditCommand(const std::string& name, const std::string& value);
    680   void OnMoveCaret(const gfx::Point& point);
    681   void OnScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect);
    682   void OnSetEditCommandsForNextKeyEvent(const EditCommands& edit_commands);
    683   void OnAllowBindings(int enabled_bindings_flags);
    684   void OnAllowScriptToClose(bool script_can_close);
    685   void OnCancelDownload(int32 download_id);
    686   void OnClearFocusedElement();
    687   void OnClosePage();
    688   void OnShowContextMenu(ui::MenuSourceType source_type,
    689                          const gfx::Point& location);
    690   void OnCopyImageAt(int x, int y);
    691   void OnSaveImageAt(int x, int y);
    692   void OnDeterminePageLanguage();
    693   void OnDisableScrollbarsForSmallWindows(
    694       const gfx::Size& disable_scrollbars_size_limit);
    695   void OnDragSourceEnded(const gfx::Point& client_point,
    696                          const gfx::Point& screen_point,
    697                          blink::WebDragOperation drag_operation);
    698   void OnDragSourceSystemDragEnded();
    699   void OnDragTargetDrop(const gfx::Point& client_pt,
    700                         const gfx::Point& screen_pt,
    701                         int key_modifiers);
    702   void OnDragTargetDragEnter(const DropData& drop_data,
    703                              const gfx::Point& client_pt,
    704                              const gfx::Point& screen_pt,
    705                              blink::WebDragOperationsMask operations_allowed,
    706                              int key_modifiers);
    707   void OnDragTargetDragLeave();
    708   void OnDragTargetDragOver(const gfx::Point& client_pt,
    709                             const gfx::Point& screen_pt,
    710                             blink::WebDragOperationsMask operations_allowed,
    711                             int key_modifiers);
    712   void OnEnablePreferredSizeChangedMode();
    713   void OnEnableAutoResize(const gfx::Size& min_size, const gfx::Size& max_size);
    714   void OnDisableAutoResize(const gfx::Size& new_size);
    715   void OnEnumerateDirectoryResponse(int id,
    716                                     const std::vector<base::FilePath>& paths);
    717   void OnFileChooserResponse(
    718       const std::vector<ui::SelectedFileInfo>& files);
    719   void OnFind(int request_id,
    720               const base::string16&,
    721               const blink::WebFindOptions&);
    722   void OnGetAllSavableResourceLinksForCurrentPage(const GURL& page_url);
    723   void OnGetSerializedHtmlDataForCurrentPageWithLocalLinks(
    724       const std::vector<GURL>& links,
    725       const std::vector<base::FilePath>& local_paths,
    726       const base::FilePath& local_directory_name);
    727   void OnMediaPlayerActionAt(const gfx::Point& location,
    728                              const blink::WebMediaPlayerAction& action);
    729   void OnPluginActionAt(const gfx::Point& location,
    730                         const blink::WebPluginAction& action);
    731   void OnMoveOrResizeStarted();
    732   void OnPostMessageEvent(const ViewMsg_PostMessage_Params& params);
    733   void OnReleaseDisambiguationPopupBitmap(const cc::SharedBitmapId& id);
    734   void OnResetPageEncodingToDefault();
    735   void OnSetAccessibilityMode(AccessibilityMode new_mode);
    736   void OnSetActive(bool active);
    737   void OnSetBackgroundOpaque(bool opaque);
    738   void OnExitFullscreen();
    739   void OnSetHistoryLengthAndPrune(int history_length, int32 minimum_page_id);
    740   void OnSetInitialFocus(bool reverse);
    741   void OnSetPageEncoding(const std::string& encoding_name);
    742   void OnSetRendererPrefs(const RendererPreferences& renderer_prefs);
    743   void OnSetWebUIProperty(const std::string& name, const std::string& value);
    744   void OnSetZoomLevelForLoadingURL(const GURL& url, double zoom_level);
    745   void OnSetZoomLevelForView(bool uses_temporary_zoom_level, double level);
    746   void OnStop();
    747   void OnStopFinding(StopFindAction action);
    748   void OnSuppressDialogsUntilSwapOut();
    749   void OnThemeChanged();
    750   void OnUpdateTargetURLAck();
    751   void OnUpdateWebPreferences(const WebPreferences& prefs);
    752   void OnZoom(PageZoom zoom);
    753   void OnEnableViewSourceMode();
    754   void OnDisownOpener();
    755   void OnWindowSnapshotCompleted(const int snapshot_id,
    756       const gfx::Size& size, const std::vector<unsigned char>& png);
    757   void OnSelectWordAroundCaret();
    758 #if defined(OS_ANDROID)
    759   void OnActivateNearestFindResult(int request_id, float x, float y);
    760   void OnFindMatchRects(int current_version);
    761   void OnSelectPopupMenuItems(bool canceled,
    762                               const std::vector<int>& selected_indices);
    763   void OnUndoScrollFocusedEditableNodeIntoRect();
    764   void OnUpdateTopControlsState(bool enable_hiding,
    765                                 bool enable_showing,
    766                                 bool animate);
    767   void OnExtractSmartClipData(const gfx::Rect& rect);
    768   void OnPauseVideoCaptureStream();
    769   void OnResumeVideoCaptureStream();
    770 #elif defined(OS_MACOSX)
    771   void OnPluginImeCompositionCompleted(const base::string16& text,
    772                                        int plugin_id);
    773   void OnSelectPopupMenuItem(int selected_index);
    774   void OnSetInLiveResize(bool in_live_resize);
    775   void OnSetWindowVisibility(bool visible);
    776   void OnWindowFrameChanged(const gfx::Rect& window_frame,
    777                             const gfx::Rect& view_frame);
    778 #endif
    779 
    780   // Adding a new message handler? Please add it in alphabetical order above
    781   // and put it in the same position in the .cc file.
    782 
    783   // Misc private functions ----------------------------------------------------
    784   // Check whether the preferred size has changed.
    785   void CheckPreferredSize();
    786 
    787   // This callback is triggered when DownloadFavicon completes, either
    788   // succesfully or with a failure. See DownloadFavicon for more
    789   // details.
    790   void DidDownloadFavicon(ImageResourceFetcher* fetcher,
    791                           const SkBitmap& image);
    792 
    793   // Requests to download a favicon image. When done, the RenderView is notified
    794   // by way of DidDownloadFavicon. Returns true if the request was successfully
    795   // started, false otherwise. id is used to uniquely identify the request and
    796   // passed back to the DidDownloadFavicon method. If the image has multiple
    797   // frames, the frame whose size is image_size is returned. If the image
    798   // doesn't have a frame at the specified size, the first is returned.
    799   bool DownloadFavicon(int id, const GURL& image_url, int image_size);
    800 
    801   // Called to get the WebPlugin to handle find requests in the document.
    802   // Returns NULL if there is no such WebPlugin.
    803   blink::WebPlugin* GetWebPluginForFind();
    804 
    805   // Returns true if the |params| navigation is to an entry that has been
    806   // cropped due to a recent navigation the browser did not know about.
    807   bool IsBackForwardToStaleEntry(const FrameMsg_Navigate_Params& params,
    808                                  bool is_reload);
    809 
    810   // Make the given |frame| show an empty, unscriptable page.
    811   // TODO(creis): Move this to RenderFrame.
    812   void NavigateToSwappedOutURL(blink::WebFrame* frame);
    813 
    814   // If we initiated a navigation, this function will populate |document_state|
    815   // with the navigation information saved in OnNavigate().
    816   void PopulateDocumentStateFromPending(DocumentState* document_state);
    817 
    818   // Returns a new NavigationState populated with the navigation information
    819   // saved in OnNavigate().
    820   NavigationState* CreateNavigationStateFromPending();
    821 
    822   // Processes the command-line flags --enable-viewport,
    823   // --enable-fixed-layout[=w,h] and --enable-pinch.
    824   void ProcessViewLayoutFlags(const base::CommandLine& command_line);
    825 
    826 #if defined(OS_ANDROID)
    827   // Launch an Android content intent with the given URL.
    828   void LaunchAndroidContentIntent(const GURL& intent_url, size_t request_id);
    829 #endif
    830 
    831   // Sends a reply to the current find operation handling if it was a
    832   // synchronous find request.
    833   void SendFindReply(int request_id,
    834                      int match_count,
    835                      int ordinal,
    836                      const blink::WebRect& selection_rect,
    837                      bool final_status_update);
    838 
    839   // Starts nav_state_sync_timer_ if it isn't already running.
    840   void StartNavStateSyncTimerIfNecessary();
    841 
    842 #if defined(OS_POSIX) && !defined(OS_MACOSX)
    843   void UpdateFontRenderingFromRendererPrefs();
    844 #else
    845   void UpdateFontRenderingFromRendererPrefs() {}
    846 #endif
    847 
    848   // Update the target url and tell the browser that the target URL has changed.
    849   // If |url| is empty, show |fallback_url|.
    850   void UpdateTargetURL(const GURL& url, const GURL& fallback_url);
    851 
    852   // Tells the browser what the new list of favicons for the webpage is.
    853   void SendUpdateFaviconURL(const std::vector<FaviconURL>& urls);
    854 
    855   // Invoked from DidStopLoading(). Sends the current list of loaded favicons to
    856   // the browser.
    857   void DidStopLoadingIcons();
    858 
    859   // Coordinate conversion -----------------------------------------------------
    860 
    861   gfx::RectF ClientRectToPhysicalWindowRect(const gfx::RectF& rect) const;
    862 
    863   // RenderFrameImpl accessible state ------------------------------------------
    864   // The following section is the set of methods that RenderFrameImpl needs
    865   // to access RenderViewImpl state. The set of state variables are page-level
    866   // specific, so they don't belong in RenderFrameImpl and should remain in
    867   // this object.
    868   ObserverList<RenderViewObserver>& observers() {
    869     return observers_;
    870   }
    871 
    872   // TODO(nasko): Remove this method when we move to frame proxy objects, since
    873   // the concept of swapped out will be eliminated.
    874   void set_is_swapped_out(bool swapped_out) {
    875     is_swapped_out_ = swapped_out;
    876   }
    877 
    878   NavigationGesture navigation_gesture() {
    879     return navigation_gesture_;
    880   }
    881   void set_navigation_gesture(NavigationGesture gesture) {
    882     navigation_gesture_ = gesture;
    883   }
    884 
    885   // ---------------------------------------------------------------------------
    886   // ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put
    887   // it in the same order in the .cc file as it was in the header.
    888   // ---------------------------------------------------------------------------
    889 
    890   // Settings ------------------------------------------------------------------
    891 
    892   WebPreferences webkit_preferences_;
    893   RendererPreferences renderer_preferences_;
    894 
    895   HostZoomLevels host_zoom_levels_;
    896 
    897   // Whether content state (such as form state, scroll position and page
    898   // contents) should be sent to the browser immediately. This is normally
    899   // false, but set to true by some tests.
    900   bool send_content_state_immediately_;
    901 
    902   // Bitwise-ORed set of extra bindings that have been enabled.  See
    903   // BindingsPolicy for details.
    904   int enabled_bindings_;
    905 
    906   // If true, we send IPC messages when |preferred_size_| changes.
    907   bool send_preferred_size_changes_;
    908 
    909   // If non-empty, and |send_preferred_size_changes_| is true, disable drawing
    910   // scroll bars on windows smaller than this size.  Used for windows that the
    911   // browser resizes to the size of the content, such as browser action popups.
    912   // If a render view is set to the minimum size of its content, webkit may add
    913   // scroll bars.  This makes sense for fixed sized windows, but it does not
    914   // make sense when the size of the view was chosen to fit the content.
    915   // This setting ensures that no scroll bars are drawn.  The size limit exists
    916   // because if the view grows beyond a size known to the browser, scroll bars
    917   // should be drawn.
    918   gfx::Size disable_scrollbars_size_limit_;
    919 
    920   // Loading state -------------------------------------------------------------
    921 
    922   // The gesture that initiated the current navigation.
    923   // TODO(nasko): Move to RenderFrame, as this is per-frame state.
    924   NavigationGesture navigation_gesture_;
    925 
    926   // Used for popups.
    927   bool opened_by_user_gesture_;
    928 
    929   // Whether this RenderView was created by a frame that was suppressing its
    930   // opener. If so, we may want to load pages in a separate process.  See
    931   // decidePolicyForNavigation for details.
    932   bool opener_suppressed_;
    933 
    934   // Whether we must stop creating nested message loops for modal dialogs until
    935   // OnSwapOut is called.  This is necessary because modal dialogs have a
    936   // PageGroupLoadDeferrer on the stack that interferes with swapping out.
    937   bool suppress_dialogs_until_swap_out_;
    938 
    939   // Holds state pertaining to a navigation that we initiated.  This is held by
    940   // the WebDataSource::ExtraData attribute.  We use pending_navigation_state_
    941   // as a temporary holder for the state until the WebDataSource corresponding
    942   // to the new navigation is created.  See DidCreateDataSource.
    943   // TODO(nasko): Move to RenderFrame, as this is per-frame state.
    944   scoped_ptr<FrameMsg_Navigate_Params> pending_navigation_params_;
    945 
    946   // Timer used to delay the updating of nav state (see SyncNavigationState).
    947   base::OneShotTimer<RenderViewImpl> nav_state_sync_timer_;
    948 
    949   // Page IDs ------------------------------------------------------------------
    950   // See documentation in RenderView.
    951   int32 page_id_;
    952 
    953   // Indicates the ID of the last page that we sent a FrameNavigate to the
    954   // browser for. This is used to determine if the most recent transition
    955   // generated a history entry (less than page_id_), or not (equal to or
    956   // greater than). Note that this will be greater than page_id_ if the user
    957   // goes back.
    958   int32 last_page_id_sent_to_browser_;
    959 
    960   // The next available page ID to use for this RenderView.  These IDs are
    961   // specific to a given RenderView and the frames within it.
    962   int32 next_page_id_;
    963 
    964   // The offset of the current item in the history list.
    965   int history_list_offset_;
    966 
    967   // The RenderView's current impression of the history length.  This includes
    968   // any items that have committed in this process, but because of cross-process
    969   // navigations, the history may have some entries that were committed in other
    970   // processes.  We won't know about them until the next navigation in this
    971   // process.
    972   int history_list_length_;
    973 
    974   // Counter to track how many frames have sent start notifications but not stop
    975   // notifications. TODO(avi): Remove this once DidStartLoading/DidStopLoading
    976   // are gone.
    977   int frames_in_progress_;
    978 
    979   // The list of page IDs for each history item this RenderView knows about.
    980   // Some entries may be -1 if they were rendered by other processes or were
    981   // restored from a previous session.  This lets us detect attempts to
    982   // navigate to stale entries that have been cropped from our history.
    983   std::vector<int32> history_page_ids_;
    984 
    985   // UI state ------------------------------------------------------------------
    986 
    987   // The state of our target_url transmissions. When we receive a request to
    988   // send a URL to the browser, we set this to TARGET_INFLIGHT until an ACK
    989   // comes back - if a new request comes in before the ACK, we store the new
    990   // URL in pending_target_url_ and set the status to TARGET_PENDING. If an
    991   // ACK comes back and we are in TARGET_PENDING, we send the stored URL and
    992   // revert to TARGET_INFLIGHT.
    993   //
    994   // We don't need a queue of URLs to send, as only the latest is useful.
    995   enum {
    996     TARGET_NONE,
    997     TARGET_INFLIGHT,  // We have a request in-flight, waiting for an ACK
    998     TARGET_PENDING    // INFLIGHT + we have a URL waiting to be sent
    999   } target_url_status_;
   1000 
   1001   // The URL we show the user in the status bar. We use this to determine if we
   1002   // want to send a new one (we do not need to send duplicates). It will be
   1003   // equal to either |mouse_over_url_| or |focus_url_|, depending on which was
   1004   // updated last.
   1005   GURL target_url_;
   1006 
   1007   // The URL the user's mouse is hovering over.
   1008   GURL mouse_over_url_;
   1009 
   1010   // The URL that has keyboard focus.
   1011   GURL focus_url_;
   1012 
   1013   // The next target URL we want to send to the browser.
   1014   GURL pending_target_url_;
   1015 
   1016   // Indicates whether this view overrides url-based zoom settings.
   1017   bool uses_temporary_zoom_level_;
   1018 
   1019 #if defined(OS_ANDROID)
   1020   // Cache the old top controls state constraints. Used when updating
   1021   // current value only without altering the constraints.
   1022   cc::TopControlsState top_controls_constraints_;
   1023 #endif
   1024 
   1025   // View ----------------------------------------------------------------------
   1026 
   1027   // Cache the preferred size of the page in order to prevent sending the IPC
   1028   // when layout() recomputes but doesn't actually change sizes.
   1029   gfx::Size preferred_size_;
   1030 
   1031   // Used to delay determining the preferred size (to avoid intermediate
   1032   // states for the sizes).
   1033   base::OneShotTimer<RenderViewImpl> check_preferred_size_timer_;
   1034 
   1035   // Bookkeeping to suppress redundant scroll and focus requests for an already
   1036   // scrolled and focused editable node.
   1037   bool has_scrolled_focused_editable_node_into_rect_;
   1038   gfx::Rect rect_for_scrolled_focused_editable_node_;
   1039 
   1040   // Helper objects ------------------------------------------------------------
   1041 
   1042   scoped_ptr<RenderFrameImpl> main_render_frame_;
   1043 
   1044   // The next group of objects all implement RenderViewObserver, so are deleted
   1045   // along with the RenderView automatically.  This is why we just store
   1046   // weak references.
   1047 
   1048   // The push messaging dispatcher attached to this view, lazily initialized.
   1049   PushMessagingDispatcher* push_messaging_dispatcher_;
   1050 
   1051   // The speech recognition dispatcher attached to this view, lazily
   1052   // initialized.
   1053   SpeechRecognitionDispatcher* speech_recognition_dispatcher_;
   1054 
   1055   // MediaStream dispatcher attached to this view; lazily initialized.
   1056   MediaStreamDispatcher* media_stream_dispatcher_;
   1057 
   1058   // BrowserPluginManager attached to this view; lazily initialized.
   1059   scoped_refptr<BrowserPluginManager> browser_plugin_manager_;
   1060 
   1061   DevToolsAgent* devtools_agent_;
   1062 
   1063   // The current accessibility mode.
   1064   AccessibilityMode accessibility_mode_;
   1065 
   1066   // Only valid if |accessibility_mode_| is anything other than
   1067   // AccessibilityModeOff.
   1068   RendererAccessibility* renderer_accessibility_;
   1069 
   1070   // Mouse Lock dispatcher attached to this view.
   1071   MouseLockDispatcher* mouse_lock_dispatcher_;
   1072 
   1073   scoped_ptr<HistoryController> history_controller_;
   1074 
   1075 #if defined(OS_ANDROID)
   1076   // Android Specific ---------------------------------------------------------
   1077 
   1078   // Expected id of the next content intent launched. Used to prevent scheduled
   1079   // intents to be launched if aborted.
   1080   size_t expected_content_intent_id_;
   1081 
   1082   // List of click-based content detectors.
   1083   typedef std::vector< linked_ptr<ContentDetector> > ContentDetectorList;
   1084   ContentDetectorList content_detectors_;
   1085 
   1086   // A date/time picker object for date and time related input elements.
   1087   scoped_ptr<RendererDateTimePicker> date_time_picker_client_;
   1088 #endif
   1089 
   1090   // Plugins -------------------------------------------------------------------
   1091 
   1092   // All the currently active plugin delegates for this RenderView; kept so
   1093   // that we can enumerate them to send updates about things like window
   1094   // location or tab focus and visibily. These are non-owning references.
   1095   std::set<WebPluginDelegateProxy*> plugin_delegates_;
   1096 
   1097 #if defined(OS_WIN)
   1098   // The ID of the focused NPAPI plug-in.
   1099   int focused_plugin_id_;
   1100 #endif
   1101 
   1102 #if defined(ENABLE_PLUGINS)
   1103   PepperPluginInstanceImpl* plugin_find_handler_;
   1104 
   1105   typedef std::set<PepperPluginInstanceImpl*> PepperPluginSet;
   1106   PepperPluginSet active_pepper_instances_;
   1107 
   1108   // TODO(jam): these belong on RenderFrame, once the browser knows which frame
   1109   // is focused and sends the IPCs which use these to the correct frame. Until
   1110   // then, we must store these on RenderView as that's the one place that knows
   1111   // about all the RenderFrames for a page.
   1112 
   1113   // Whether or not the focus is on a PPAPI plugin
   1114   PepperPluginInstanceImpl* focused_pepper_plugin_;
   1115 
   1116   // The plugin instance that received the last mouse event. It is set to NULL
   1117   // if the last mouse event went to elements other than Pepper plugins.
   1118   // |pepper_last_mouse_event_target_| is not owned by this class. We depend on
   1119   // the RenderFrameImpl to NULL it out when it destructs.
   1120   PepperPluginInstanceImpl* pepper_last_mouse_event_target_;
   1121 #endif
   1122 
   1123   // Misc ----------------------------------------------------------------------
   1124 
   1125   // The current and pending file chooser completion objects. If the queue is
   1126   // nonempty, the first item represents the currently running file chooser
   1127   // callback, and the remaining elements are the other file chooser completion
   1128   // still waiting to be run (in order).
   1129   struct PendingFileChooser;
   1130   std::deque< linked_ptr<PendingFileChooser> > file_chooser_completions_;
   1131 
   1132   // The current directory enumeration callback
   1133   std::map<int, blink::WebFileChooserCompletion*> enumeration_completions_;
   1134   int enumeration_completion_id_;
   1135 
   1136   // The SessionStorage namespace that we're assigned to has an ID, and that ID
   1137   // is passed to us upon creation.  WebKit asks for this ID upon first use and
   1138   // uses it whenever asking the browser process to allocate new storage areas.
   1139   int64 session_storage_namespace_id_;
   1140 
   1141   // Stores edit commands associated to the next key event.
   1142   // Shall be cleared as soon as the next key event is processed.
   1143   EditCommands edit_commands_;
   1144 
   1145 #if defined(OS_MACOSX) || defined(OS_ANDROID)
   1146   // The external popup for the currently showing select popup.
   1147   scoped_ptr<ExternalPopupMenu> external_popup_menu_;
   1148 #endif
   1149 
   1150   // All the registered observers.  We expect this list to be small, so vector
   1151   // is fine.
   1152   ObserverList<RenderViewObserver> observers_;
   1153 
   1154   // Wraps the |webwidget_| as a MouseLockDispatcher::LockTarget interface.
   1155   scoped_ptr<MouseLockDispatcher::LockTarget> webwidget_mouse_lock_target_;
   1156 
   1157   // State associated with the GetWindowSnapshot function.
   1158   int next_snapshot_id_;
   1159   typedef std::map<int, WindowSnapshotCallback> PendingSnapshotMap;
   1160   PendingSnapshotMap pending_snapshots_;
   1161 
   1162   // This field stores drag/drop related info for the event that is currently
   1163   // being handled. If the current event results in starting a drag/drop
   1164   // session, this info is sent to the browser along with other drag/drop info.
   1165   DragEventSourceInfo possible_drag_event_info_;
   1166 
   1167   // NOTE: stats_collection_observer_ should be the last members because their
   1168   // constructors call the AddObservers method of RenderViewImpl.
   1169   scoped_ptr<StatsCollectionObserver> stats_collection_observer_;
   1170 
   1171   typedef std::map<cc::SharedBitmapId, cc::SharedBitmap*> BitmapMap;
   1172   BitmapMap disambiguation_bitmaps_;
   1173 
   1174   // ---------------------------------------------------------------------------
   1175   // ADDING NEW DATA? Please see if it fits appropriately in one of the above
   1176   // sections rather than throwing it randomly at the end. If you're adding a
   1177   // bunch of stuff, you should probably create a helper class and put your
   1178   // data and methods on that to avoid bloating RenderView more.  You can
   1179   // use the Observer interface to filter IPC messages and receive frame change
   1180   // notifications.
   1181   // ---------------------------------------------------------------------------
   1182 
   1183   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
   1184 };
   1185 
   1186 }  // namespace content
   1187 
   1188 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
   1189