content/renderer/pepper/pepper_plugin_instance_impl.h

   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_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
   7
   8 #include <list>
   9 #include <set>
  10 #include <string>
  11 #include <vector>
  12
  13 #include "base/callback.h"
  14 #include "base/compiler_specific.h"
  15 #include "base/memory/ref_counted.h"
  16 #include "base/memory/scoped_ptr.h"
  17 #include "base/memory/weak_ptr.h"
  18 #include "base/strings/string16.h"
  19 #include "cc/layers/content_layer_client.h"
  20 #include "cc/layers/texture_layer_client.h"
  21 #include "content/common/content_export.h"
  22 #include "content/public/renderer/pepper_plugin_instance.h"
  23 #include "content/public/renderer/render_frame_observer.h"
  24 #include "content/renderer/mouse_lock_dispatcher.h"
  25 #include "ppapi/c/dev/pp_cursor_type_dev.h"
  26 #include "ppapi/c/dev/ppp_printing_dev.h"
  27 #include "ppapi/c/dev/ppp_selection_dev.h"
  28 #include "ppapi/c/dev/ppp_text_input_dev.h"
  29 #include "ppapi/c/dev/ppp_zoom_dev.h"
  30 #include "ppapi/c/pp_completion_callback.h"
  31 #include "ppapi/c/pp_instance.h"
  32 #include "ppapi/c/pp_time.h"
  33 #include "ppapi/c/pp_var.h"
  34 #include "ppapi/c/ppb_audio_config.h"
  35 #include "ppapi/c/ppb_gamepad.h"
  36 #include "ppapi/c/ppb_input_event.h"
  37 #include "ppapi/c/ppp_graphics_3d.h"
  38 #include "ppapi/c/ppp_input_event.h"
  39 #include "ppapi/c/ppp_mouse_lock.h"
  40 #include "ppapi/c/private/ppb_content_decryptor_private.h"
  41 #include "ppapi/c/private/ppp_find_private.h"
  42 #include "ppapi/c/private/ppp_instance_private.h"
  43 #include "ppapi/c/private/ppp_pdf.h"
  44 #include "ppapi/shared_impl/ppb_instance_shared.h"
  45 #include "ppapi/shared_impl/ppb_view_shared.h"
  46 #include "ppapi/shared_impl/singleton_resource_id.h"
  47 #include "ppapi/shared_impl/tracked_callback.h"
  48 #include "ppapi/thunk/ppb_gamepad_api.h"
  49 #include "ppapi/thunk/resource_creation_api.h"
  50 #include "skia/ext/refptr.h"
  51 #include "third_party/WebKit/public/platform/WebCanvas.h"
  52 #include "third_party/WebKit/public/platform/WebString.h"
  53 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  54 #include "third_party/WebKit/public/platform/WebURLResponse.h"
  55 #include "third_party/WebKit/public/web/WebPlugin.h"
  56 #include "third_party/WebKit/public/web/WebUserGestureToken.h"
  57 #include "ui/base/ime/text_input_type.h"
  58 #include "ui/events/latency_info.h"
  59 #include "ui/gfx/rect.h"
  60 #include "url/gurl.h"
  61
  62 struct PP_Point;
  63 struct _NPP;
  64
  65 class SkBitmap;
  66 class TransportDIB;
  67
  68 namespace blink {
  69 class WebInputEvent;
  70 class WebLayer;
  71 class WebMouseEvent;
  72 class WebPluginContainer;
  73 class WebURLLoader;
  74 class WebURLResponse;
  75 struct WebCompositionUnderline;
  76 struct WebCursorInfo;
  77 struct WebURLError;
  78 struct WebPrintParams;
  79 }
  80
  81 namespace cc {
  82 class TextureLayer;
  83 }
  84
  85 namespace gfx {
  86 class Range;
  87 }
  88
  89 namespace ppapi {
  90 class Resource;
  91 struct InputEventData;
  92 struct PPP_Instance_Combined;
  93 class ScopedPPVar;
  94 }
  95
  96 namespace v8 {
  97 class Isolate;
  98 }
  99
 100 namespace content {
 101
 102 class ContentDecryptorDelegate;
 103 class FullscreenContainer;
 104 class MessageChannel;
 105 class PepperGraphics2DHost;
 106 class PluginModule;
 107 class PluginObject;
 108 class PPB_Graphics3D_Impl;
 109 class PPB_ImageData_Impl;
 110 class PPB_URLLoader_Impl;
 111 class RenderFrameImpl;
 112 class RenderViewImpl;
 113
 114 // Represents one time a plugin appears on one web page.
 115 //
 116 // Note: to get from a PP_Instance to a PepperPluginInstance*, use the
 117 // ResourceTracker.
 118 class CONTENT_EXPORT PepperPluginInstanceImpl
 119     : public base::RefCounted<PepperPluginInstanceImpl>,
 120       public NON_EXPORTED_BASE(PepperPluginInstance),
 121       public ppapi::PPB_Instance_Shared,
 122       public NON_EXPORTED_BASE(cc::TextureLayerClient),
 123       public RenderFrameObserver {
 124  public:
 125   // Create and return a PepperPluginInstanceImpl object which supports the most
 126   // recent version of PPP_Instance possible by querying the given
 127   // get_plugin_interface function. If the plugin does not support any valid
 128   // PPP_Instance interface, returns NULL.
 129   static PepperPluginInstanceImpl* Create(RenderFrameImpl* render_frame,
 130                                           PluginModule* module,
 131                                           blink::WebPluginContainer* container,
 132                                           const GURL& plugin_url);
 133   RenderFrameImpl* render_frame() const { return render_frame_; }
 134   PluginModule* module() const { return module_.get(); }
 135   MessageChannel& message_channel() { return *message_channel_; }
 136
 137   blink::WebPluginContainer* container() const { return container_; }
 138
 139   // Returns the PP_Instance uniquely identifying this instance. Guaranteed
 140   // nonzero.
 141   PP_Instance pp_instance() const { return pp_instance_; }
 142
 143   ppapi::thunk::ResourceCreationAPI& resource_creation() {
 144     return *resource_creation_.get();
 145   }
 146
 147   // Does some pre-destructor cleanup on the instance. This is necessary
 148   // because some cleanup depends on the plugin instance still existing (like
 149   // calling the plugin's DidDestroy function). This function is called from
 150   // the WebPlugin implementation when WebKit is about to remove the plugin.
 151   void Delete();
 152
 153   // Returns true if Delete() has been called on this object.
 154   bool is_deleted() const;
 155
 156   // Paints the current backing store to the web page.
 157   void Paint(blink::WebCanvas* canvas,
 158              const gfx::Rect& plugin_rect,
 159              const gfx::Rect& paint_rect);
 160
 161   // Schedules a paint of the page for the given region. The coordinates are
 162   // relative to the top-left of the plugin. This does nothing if the plugin
 163   // has not yet been positioned. You can supply an empty gfx::Rect() to
 164   // invalidate the entire plugin.
 165   void InvalidateRect(const gfx::Rect& rect);
 166
 167   // Schedules a scroll of the plugin.  This uses optimized scrolling only for
 168   // full-frame plugins, as otherwise there could be other elements on top.  The
 169   // slow path can also be triggered if there is an overlapping frame.
 170   void ScrollRect(int dx, int dy, const gfx::Rect& rect);
 171
 172   // Commit the backing texture to the screen once the side effects some
 173   // rendering up to an offscreen SwapBuffers are visible.
 174   void CommitBackingTexture();
 175
 176   // Called when the out-of-process plugin implementing this instance crashed.
 177   void InstanceCrashed();
 178
 179   // PPB_Instance and PPB_Instance_Private implementation.
 180   bool full_frame() const { return full_frame_; }
 181   const ppapi::ViewData& view_data() const { return view_data_; }
 182
 183   // PPP_Instance and PPP_Instance_Private.
 184   bool Initialize(const std::vector<std::string>& arg_names,
 185                   const std::vector<std::string>& arg_values,
 186                   bool full_frame);
 187   bool HandleDocumentLoad(const blink::WebURLResponse& response);
 188   bool HandleInputEvent(const blink::WebInputEvent& event,
 189                         blink::WebCursorInfo* cursor_info);
 190   PP_Var GetInstanceObject();
 191   void ViewChanged(const gfx::Rect& position,
 192                    const gfx::Rect& clip,
 193                    const std::vector<gfx::Rect>& cut_outs_rects);
 194
 195   // Handlers for composition events.
 196   bool HandleCompositionStart(const base::string16& text);
 197   bool HandleCompositionUpdate(
 198       const base::string16& text,
 199       const std::vector<blink::WebCompositionUnderline>& underlines,
 200       int selection_start,
 201       int selection_end);
 202   bool HandleCompositionEnd(const base::string16& text);
 203   bool HandleTextInput(const base::string16& text);
 204
 205   // Gets the current text input status.
 206   ui::TextInputType text_input_type() const { return text_input_type_; }
 207   gfx::Rect GetCaretBounds() const;
 208   bool IsPluginAcceptingCompositionEvents() const;
 209   void GetSurroundingText(base::string16* text, gfx::Range* range) const;
 210
 211   // Notifications about focus changes, see has_webkit_focus_ below.
 212   void SetWebKitFocus(bool has_focus);
 213   void SetContentAreaFocus(bool has_focus);
 214
 215   // Notification about page visibility. The default is "visible".
 216   void PageVisibilityChanged(bool is_visible);
 217
 218   // Notifications that the view has started painting, and has flushed the
 219   // painted content to the screen. These messages are used to send Flush
 220   // callbacks to the plugin for DeviceContext2D/3D.
 221   void ViewInitiatedPaint();
 222   void ViewFlushedPaint();
 223
 224   // Tracks all live PluginObjects.
 225   void AddPluginObject(PluginObject* plugin_object);
 226   void RemovePluginObject(PluginObject* plugin_object);
 227
 228   base::string16 GetSelectedText(bool html);
 229   base::string16 GetLinkAtPosition(const gfx::Point& point);
 230   void RequestSurroundingText(size_t desired_number_of_characters);
 231   void Zoom(double factor, bool text_only);
 232   bool StartFind(const base::string16& search_text,
 233                  bool case_sensitive,
 234                  int identifier);
 235   void SelectFindResult(bool forward);
 236   void StopFind();
 237
 238   bool SupportsPrintInterface();
 239   bool IsPrintScalingDisabled();
 240   int PrintBegin(const blink::WebPrintParams& print_params);
 241   bool PrintPage(int page_number, blink::WebCanvas* canvas);
 242   void PrintEnd();
 243
 244   bool CanRotateView();
 245   void RotateView(blink::WebPlugin::RotationType type);
 246
 247   // There are 2 implementations of the fullscreen interface
 248   // PPB_FlashFullscreen is used by Pepper Flash.
 249   // PPB_Fullscreen is intended for other applications including NaCl.
 250   // The two interface are mutually exclusive.
 251
 252   // Implementation of PPB_FlashFullscreen.
 253
 254   // Because going to fullscreen is asynchronous (but going out is not), there
 255   // are 3 states:
 256   // - normal            : fullscreen_container_ == NULL
 257   //                       flash_fullscreen_ == false
 258   // - fullscreen pending: fullscreen_container_ != NULL
 259   //                       flash_fullscreen_ == false
 260   // - fullscreen        : fullscreen_container_ != NULL
 261   //                       flash_fullscreen_ == true
 262   //
 263   // In normal state, events come from webkit and painting goes back to it.
 264   // In fullscreen state, events come from the fullscreen container, and
 265   // painting goes back to it.
 266   // In pending state, events from webkit are ignored, and as soon as we
 267   // receive events from the fullscreen container, we go to the fullscreen
 268   // state.
 269   bool FlashIsFullscreenOrPending();
 270
 271   // Updates |flash_fullscreen_| and sends focus change notification if
 272   // necessary.
 273   void UpdateFlashFullscreenState(bool flash_fullscreen);
 274
 275   FullscreenContainer* fullscreen_container() const {
 276     return fullscreen_container_;
 277   }
 278
 279   // Implementation of PPB_Fullscreen.
 280
 281   // Because going to/from fullscreen is asynchronous, there are 4 states:
 282   // - normal            : desired_fullscreen_state_ == false
 283   //                       view_data_.is_fullscreen == false
 284   // - fullscreen pending: desired_fullscreen_state_ == true
 285   //                       view_data_.is_fullscreen == false
 286   // - fullscreen        : desired_fullscreen_state_ == true
 287   //                       view_data_.is_fullscreen == true
 288   // - normal pending    : desired_fullscreen_state_ = false
 289   //                       view_data_.is_fullscreen = true
 290   bool IsFullscreenOrPending();
 291
 292   bool flash_fullscreen() const { return flash_fullscreen_; }
 293
 294   // Switches between fullscreen and normal mode. The transition is
 295   // asynchronous. WebKit will trigger corresponding VewChanged calls.
 296   // Returns true on success, false on failure (e.g. trying to enter fullscreen
 297   // when not processing a user gesture or trying to set fullscreen when
 298   // already in fullscreen mode).
 299   bool SetFullscreen(bool fullscreen);
 300
 301   // Send the message on to the plugin.
 302   void HandleMessage(ppapi::ScopedPPVar message);
 303
 304   // Returns true if the plugin is processing a user gesture.
 305   bool IsProcessingUserGesture();
 306
 307   // Returns the user gesture token to use for creating a WebScopedUserGesture,
 308   // if IsProcessingUserGesture returned true.
 309   blink::WebUserGestureToken CurrentUserGestureToken();
 310
 311   // A mouse lock request was pending and this reports success or failure.
 312   void OnLockMouseACK(bool succeeded);
 313   // A mouse lock was in place, but has been lost.
 314   void OnMouseLockLost();
 315   // A mouse lock is enabled and mouse events are being delivered.
 316   void HandleMouseLockedInputEvent(const blink::WebMouseEvent& event);
 317
 318   // Simulates an input event to the plugin by passing it down to WebKit,
 319   // which sends it back up to the plugin as if it came from the user.
 320   void SimulateInputEvent(const ppapi::InputEventData& input_event);
 321
 322   // Simulates an IME event at the level of RenderView which sends it back up to
 323   // the plugin as if it came from the user.
 324   bool SimulateIMEEvent(const ppapi::InputEventData& input_event);
 325   void SimulateImeSetCompositionEvent(const ppapi::InputEventData& input_event);
 326
 327   // The document loader is valid when the plugin is "full-frame" and in this
 328   // case is non-NULL as long as the corresponding loader resource is alive.
 329   // This pointer is non-owning, so the loader must use set_document_loader to
 330   // clear itself when it is destroyed.
 331   blink::WebURLLoaderClient* document_loader() const {
 332     return document_loader_;
 333   }
 334   void set_document_loader(blink::WebURLLoaderClient* loader) {
 335     document_loader_ = loader;
 336   }
 337
 338   ContentDecryptorDelegate* GetContentDecryptorDelegate();
 339
 340   // PluginInstance implementation
 341   virtual RenderView* GetRenderView() OVERRIDE;
 342   virtual blink::WebPluginContainer* GetContainer() OVERRIDE;
 343   virtual v8::Isolate* GetIsolate() const OVERRIDE;
 344   virtual ppapi::VarTracker* GetVarTracker() OVERRIDE;
 345   virtual const GURL& GetPluginURL() OVERRIDE;
 346   virtual base::FilePath GetModulePath() OVERRIDE;
 347   virtual PP_Resource CreateImage(gfx::ImageSkia* source_image,
 348                                   float scale) OVERRIDE;
 349   virtual PP_ExternalPluginResult SwitchToOutOfProcessProxy(
 350       const base::FilePath& file_path,
 351       ppapi::PpapiPermissions permissions,
 352       const IPC::ChannelHandle& channel_handle,
 353       base::ProcessId plugin_pid,
 354       int plugin_child_id) OVERRIDE;
 355   virtual void SetAlwaysOnTop(bool on_top) OVERRIDE;
 356   virtual bool IsFullPagePlugin() OVERRIDE;
 357   virtual bool FlashSetFullscreen(bool fullscreen, bool delay_report) OVERRIDE;
 358   virtual bool IsRectTopmost(const gfx::Rect& rect) OVERRIDE;
 359   virtual int32_t Navigate(const ppapi::URLRequestInfoData& request,
 360                            const char* target,
 361                            bool from_user_action) OVERRIDE;
 362   virtual int MakePendingFileRefRendererHost(const base::FilePath& path)
 363       OVERRIDE;
 364   virtual void SetEmbedProperty(PP_Var key, PP_Var value) OVERRIDE;
 365   virtual void SetSelectedText(const base::string16& selected_text) OVERRIDE;
 366   virtual void SetLinkUnderCursor(const std::string& url) OVERRIDE;
 367   virtual void SetTextInputType(ui::TextInputType type) OVERRIDE;
 368   virtual void PostMessageToJavaScript(PP_Var message) OVERRIDE;
 369
 370   // PPB_Instance_API implementation.
 371   virtual PP_Bool BindGraphics(PP_Instance instance,
 372                                PP_Resource device) OVERRIDE;
 373   virtual PP_Bool IsFullFrame(PP_Instance instance) OVERRIDE;
 374   virtual const ppapi::ViewData* GetViewData(PP_Instance instance) OVERRIDE;
 375   virtual PP_Bool FlashIsFullscreen(PP_Instance instance) OVERRIDE;
 376   virtual PP_Var GetWindowObject(PP_Instance instance) OVERRIDE;
 377   virtual PP_Var GetOwnerElementObject(PP_Instance instance) OVERRIDE;
 378   virtual PP_Var ExecuteScript(PP_Instance instance,
 379                                PP_Var script,
 380                                PP_Var* exception) OVERRIDE;
 381   virtual uint32_t GetAudioHardwareOutputSampleRate(PP_Instance instance)
 382       OVERRIDE;
 383   virtual uint32_t GetAudioHardwareOutputBufferSize(PP_Instance instance)
 384       OVERRIDE;
 385   virtual PP_Var GetDefaultCharSet(PP_Instance instance) OVERRIDE;
 386   virtual void SetPluginToHandleFindRequests(PP_Instance) OVERRIDE;
 387   virtual void NumberOfFindResultsChanged(PP_Instance instance,
 388                                           int32_t total,
 389                                           PP_Bool final_result) OVERRIDE;
 390   virtual void SelectedFindResultChanged(PP_Instance instance,
 391                                          int32_t index) OVERRIDE;
 392   virtual void SetTickmarks(PP_Instance instance,
 393                             const PP_Rect* tickmarks,
 394                             uint32_t count) OVERRIDE;
 395   virtual PP_Bool IsFullscreen(PP_Instance instance) OVERRIDE;
 396   virtual PP_Bool SetFullscreen(PP_Instance instance,
 397                                 PP_Bool fullscreen) OVERRIDE;
 398   virtual PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size) OVERRIDE;
 399   virtual ppapi::Resource* GetSingletonResource(PP_Instance instance,
 400                                                 ppapi::SingletonResourceID id)
 401       OVERRIDE;
 402   virtual int32_t RequestInputEvents(PP_Instance instance,
 403                                      uint32_t event_classes) OVERRIDE;
 404   virtual int32_t RequestFilteringInputEvents(PP_Instance instance,
 405                                               uint32_t event_classes) OVERRIDE;
 406   virtual void ClearInputEventRequest(PP_Instance instance,
 407                                       uint32_t event_classes) OVERRIDE;
 408   virtual void StartTrackingLatency(PP_Instance instance) OVERRIDE;
 409   virtual void ZoomChanged(PP_Instance instance, double factor) OVERRIDE;
 410   virtual void ZoomLimitsChanged(PP_Instance instance,
 411                                  double minimum_factor,
 412                                  double maximum_factor) OVERRIDE;
 413   virtual void PostMessage(PP_Instance instance, PP_Var message) OVERRIDE;
 414   virtual int32_t RegisterMessageHandler(PP_Instance instance,
 415                                          void* user_data,
 416                                          const PPP_MessageHandler_0_1* handler,
 417                                          PP_Resource message_loop) OVERRIDE;
 418   virtual void UnregisterMessageHandler(PP_Instance instance) OVERRIDE;
 419   virtual PP_Bool SetCursor(PP_Instance instance,
 420                             PP_MouseCursor_Type type,
 421                             PP_Resource image,
 422                             const PP_Point* hot_spot) OVERRIDE;
 423   virtual int32_t LockMouse(PP_Instance instance,
 424                             scoped_refptr<ppapi::TrackedCallback> callback)
 425       OVERRIDE;
 426   virtual void UnlockMouse(PP_Instance instance) OVERRIDE;
 427   virtual void SetTextInputType(PP_Instance instance,
 428                                 PP_TextInput_Type type) OVERRIDE;
 429   virtual void UpdateCaretPosition(PP_Instance instance,
 430                                    const PP_Rect& caret,
 431                                    const PP_Rect& bounding_box) OVERRIDE;
 432   virtual void CancelCompositionText(PP_Instance instance) OVERRIDE;
 433   virtual void SelectionChanged(PP_Instance instance) OVERRIDE;
 434   virtual void UpdateSurroundingText(PP_Instance instance,
 435                                      const char* text,
 436                                      uint32_t caret,
 437                                      uint32_t anchor) OVERRIDE;
 438   virtual PP_Var ResolveRelativeToDocument(PP_Instance instance,
 439                                            PP_Var relative,
 440                                            PP_URLComponents_Dev* components)
 441       OVERRIDE;
 442   virtual PP_Bool DocumentCanRequest(PP_Instance instance, PP_Var url) OVERRIDE;
 443   virtual PP_Bool DocumentCanAccessDocument(PP_Instance instance,
 444                                             PP_Instance target) OVERRIDE;
 445   virtual PP_Var GetDocumentURL(PP_Instance instance,
 446                                 PP_URLComponents_Dev* components) OVERRIDE;
 447   virtual PP_Var GetPluginInstanceURL(PP_Instance instance,
 448                                       PP_URLComponents_Dev* components)
 449       OVERRIDE;
 450   virtual PP_Var GetPluginReferrerURL(PP_Instance instance,
 451                                       PP_URLComponents_Dev* components)
 452       OVERRIDE;
 453
 454   // PPB_ContentDecryptor_Private implementation.
 455   virtual void SessionCreated(PP_Instance instance,
 456                               uint32_t session_id,
 457                               PP_Var web_session_id_var) OVERRIDE;
 458   virtual void SessionMessage(PP_Instance instance,
 459                               uint32_t session_id,
 460                               PP_Var message,
 461                               PP_Var destination_url) OVERRIDE;
 462   virtual void SessionReady(PP_Instance instance, uint32_t session_id) OVERRIDE;
 463   virtual void SessionClosed(PP_Instance instance,
 464                              uint32_t session_id) OVERRIDE;
 465   virtual void SessionError(PP_Instance instance,
 466                             uint32_t session_id,
 467                             int32_t media_error,
 468                             uint32_t system_code) OVERRIDE;
 469   virtual void DeliverBlock(PP_Instance instance,
 470                             PP_Resource decrypted_block,
 471                             const PP_DecryptedBlockInfo* block_info) OVERRIDE;
 472   virtual void DecoderInitializeDone(PP_Instance instance,
 473                                      PP_DecryptorStreamType decoder_type,
 474                                      uint32_t request_id,
 475                                      PP_Bool success) OVERRIDE;
 476   virtual void DecoderDeinitializeDone(PP_Instance instance,
 477                                        PP_DecryptorStreamType decoder_type,
 478                                        uint32_t request_id) OVERRIDE;
 479   virtual void DecoderResetDone(PP_Instance instance,
 480                                 PP_DecryptorStreamType decoder_type,
 481                                 uint32_t request_id) OVERRIDE;
 482   virtual void DeliverFrame(PP_Instance instance,
 483                             PP_Resource decrypted_frame,
 484                             const PP_DecryptedFrameInfo* frame_info) OVERRIDE;
 485   virtual void DeliverSamples(PP_Instance instance,
 486                               PP_Resource audio_frames,
 487                               const PP_DecryptedSampleInfo* sample_info)
 488       OVERRIDE;
 489
 490   // Reset this instance as proxied. Assigns the instance a new module, resets
 491   // cached interfaces to point to the out-of-process proxy and re-sends
 492   // DidCreate, DidChangeView, and HandleDocumentLoad (if necessary).
 493   // This should be used only when switching an in-process instance to an
 494   // external out-of-process instance.
 495   PP_ExternalPluginResult ResetAsProxied(scoped_refptr<PluginModule> module);
 496
 497   // Checks whether this is a valid instance of the given module. After calling
 498   // ResetAsProxied above, a NaCl plugin instance's module changes, so external
 499   // hosts won't recognize it as a valid instance of the original module. This
 500   // method fixes that be checking that either module_ or original_module_ match
 501   // the given module.
 502   bool IsValidInstanceOf(PluginModule* module);
 503
 504   // Returns the plugin NPP identifier that this plugin will use to identify
 505   // itself when making NPObject scripting calls to WebBindings.
 506   struct _NPP* instanceNPP();
 507
 508   // cc::TextureLayerClient implementation.
 509   virtual bool PrepareTextureMailbox(
 510       cc::TextureMailbox* mailbox,
 511       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
 512       bool use_shared_memory) OVERRIDE;
 513
 514   // RenderFrameObserver
 515   virtual void OnDestruct() OVERRIDE;
 516
 517   void AddLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info);
 518
 519  private:
 520   friend class base::RefCounted<PepperPluginInstanceImpl>;
 521   friend class PpapiUnittest;
 522
 523   // Delete should be called by the WebPlugin before this destructor.
 524   virtual ~PepperPluginInstanceImpl();
 525
 526   // Class to record document load notifications and play them back once the
 527   // real document loader becomes available. Used only by external instances.
 528   class ExternalDocumentLoader : public blink::WebURLLoaderClient {
 529    public:
 530     ExternalDocumentLoader();
 531     virtual ~ExternalDocumentLoader();
 532
 533     void ReplayReceivedData(WebURLLoaderClient* document_loader);
 534
 535     // blink::WebURLLoaderClient implementation.
 536     virtual void didReceiveData(blink::WebURLLoader* loader,
 537                                 const char* data,
 538                                 int data_length,
 539                                 int encoded_data_length);
 540     virtual void didFinishLoading(blink::WebURLLoader* loader,
 541                                   double finish_time,
 542                                   int64_t total_encoded_data_length);
 543     virtual void didFail(blink::WebURLLoader* loader,
 544                          const blink::WebURLError& error);
 545
 546    private:
 547     std::list<std::string> data_;
 548     bool finished_loading_;
 549     scoped_ptr<blink::WebURLError> error_;
 550   };
 551
 552   // Implements PPB_Gamepad_API. This is just to avoid having an excessive
 553   // number of interfaces implemented by PepperPluginInstanceImpl.
 554   class GamepadImpl : public ppapi::thunk::PPB_Gamepad_API,
 555                       public ppapi::Resource {
 556    public:
 557     GamepadImpl();
 558     // Resource implementation.
 559     virtual ppapi::thunk::PPB_Gamepad_API* AsPPB_Gamepad_API() OVERRIDE;
 560     virtual void Sample(PP_Instance instance,
 561                         PP_GamepadsSampleData* data) OVERRIDE;
 562
 563    private:
 564     virtual ~GamepadImpl();
 565   };
 566
 567   // See the static Create functions above for creating PepperPluginInstanceImpl
 568   // objects. This constructor is private so that we can hide the
 569   // PPP_Instance_Combined details while still having 1 constructor to maintain
 570   // for member initialization.
 571   PepperPluginInstanceImpl(RenderFrameImpl* render_frame,
 572                            PluginModule* module,
 573                            ppapi::PPP_Instance_Combined* instance_interface,
 574                            blink::WebPluginContainer* container,
 575                            const GURL& plugin_url);
 576
 577   bool LoadFindInterface();
 578   bool LoadInputEventInterface();
 579   bool LoadMouseLockInterface();
 580   bool LoadPdfInterface();
 581   bool LoadPrintInterface();
 582   bool LoadPrivateInterface();
 583   bool LoadSelectionInterface();
 584   bool LoadTextInputInterface();
 585   bool LoadZoomInterface();
 586
 587   // Update any transforms that should be applied to the texture layer.
 588   void UpdateLayerTransform();
 589
 590   // Determines if we think the plugin has focus, both content area and webkit
 591   // (see has_webkit_focus_ below).
 592   bool PluginHasFocus() const;
 593   void SendFocusChangeNotification();
 594
 595   void UpdateTouchEventRequest();
 596
 597   // Returns true if the plugin has registered to accept wheel events.
 598   bool IsAcceptingWheelEvents() const;
 599
 600   void ScheduleAsyncDidChangeView();
 601   void SendAsyncDidChangeView();
 602   void SendDidChangeView();
 603
 604   // Reports the current plugin geometry to the plugin by calling
 605   // DidChangeView.
 606   void ReportGeometry();
 607
 608   // Queries the plugin for supported print formats and sets |format| to the
 609   // best format to use. Returns false if the plugin does not support any
 610   // print format that we can handle (we can handle only PDF).
 611   bool GetPreferredPrintOutputFormat(PP_PrintOutputFormat_Dev* format);
 612   bool PrintPDFOutput(PP_Resource print_output, blink::WebCanvas* canvas);
 613
 614   // Updates the layer for compositing. This creates a layer and attaches to the
 615   // container if:
 616   // - we have a bound Graphics3D and the Graphics3D has a texture, OR
 617   //   we have a bound Graphics2D and are using software compositing
 618   // - we are not in Flash full-screen mode (or transitioning to it)
 619   // Otherwise it destroys the layer.
 620   // It does either operation lazily.
 621   void UpdateLayer();
 622
 623   // Internal helper function for PrintPage().
 624   bool PrintPageHelper(PP_PrintPageNumberRange_Dev* page_ranges,
 625                        int num_ranges,
 626                        blink::WebCanvas* canvas);
 627
 628   void DoSetCursor(blink::WebCursorInfo* cursor);
 629
 630   // Internal helper functions for HandleCompositionXXX().
 631   bool SendCompositionEventToPlugin(PP_InputEvent_Type type,
 632                                     const base::string16& text);
 633   bool SendCompositionEventWithUnderlineInformationToPlugin(
 634       PP_InputEvent_Type type,
 635       const base::string16& text,
 636       const std::vector<blink::WebCompositionUnderline>& underlines,
 637       int selection_start,
 638       int selection_end);
 639
 640   // Internal helper function for XXXInputEvents().
 641   void RequestInputEventsHelper(uint32_t event_classes);
 642
 643   // Checks if the security origin of the document containing this instance can
 644   // assess the security origin of the main frame document.
 645   bool CanAccessMainFrame() const;
 646
 647   // Returns true if the WebView the plugin is in renders via the accelerated
 648   // compositing path.
 649   bool IsViewAccelerated();
 650
 651   // Track, set and reset size attributes to control the size of the plugin
 652   // in and out of fullscreen mode.
 653   void KeepSizeAttributesBeforeFullscreen();
 654   void SetSizeAttributesForFullscreen();
 655   void ResetSizeAttributesAfterFullscreen();
 656
 657   bool IsMouseLocked();
 658   bool LockMouse();
 659   MouseLockDispatcher* GetMouseLockDispatcher();
 660   MouseLockDispatcher::LockTarget* GetOrCreateLockTargetAdapter();
 661   void UnSetAndDeleteLockTargetAdapter();
 662
 663   void DidDataFromWebURLResponse(const blink::WebURLResponse& response,
 664                                  int pending_host_id,
 665                                  const ppapi::URLResponseInfoData& data);
 666
 667   RenderFrameImpl* render_frame_;
 668   base::Closure instance_deleted_callback_;
 669   scoped_refptr<PluginModule> module_;
 670   scoped_ptr<ppapi::PPP_Instance_Combined> instance_interface_;
 671   // If this is the NaCl plugin, we create a new module when we switch to the
 672   // IPC-based PPAPI proxy. Store the original module and instance interface
 673   // so we can shut down properly.
 674   scoped_refptr<PluginModule> original_module_;
 675   scoped_ptr<ppapi::PPP_Instance_Combined> original_instance_interface_;
 676
 677   PP_Instance pp_instance_;
 678
 679   // NULL until we have been initialized.
 680   blink::WebPluginContainer* container_;
 681   scoped_refptr<cc::TextureLayer> texture_layer_;
 682   scoped_ptr<blink::WebLayer> web_layer_;
 683   bool layer_bound_to_fullscreen_;
 684   bool layer_is_hardware_;
 685
 686   // Plugin URL.
 687   GURL plugin_url_;
 688
 689   // Indicates whether this is a full frame instance, which means it represents
 690   // an entire document rather than an embed tag.
 691   bool full_frame_;
 692
 693   // Stores the current state of the plugin view.
 694   ppapi::ViewData view_data_;
 695   // The last state sent to the plugin. It is only valid after
 696   // |sent_initial_did_change_view_| is set to true.
 697   ppapi::ViewData last_sent_view_data_;
 698
 699   // Indicates if we've ever sent a didChangeView to the plugin. This ensures we
 700   // always send an initial notification, even if the position and clip are the
 701   // same as the default values.
 702   bool sent_initial_did_change_view_;
 703
 704   // The current device context for painting in 2D and 3D.
 705   scoped_refptr<PPB_Graphics3D_Impl> bound_graphics_3d_;
 706   PepperGraphics2DHost* bound_graphics_2d_platform_;
 707
 708   // We track two types of focus, one from WebKit, which is the focus among
 709   // all elements of the page, one one from the browser, which is whether the
 710   // tab/window has focus. We tell the plugin it has focus only when both of
 711   // these values are set to true.
 712   bool has_webkit_focus_;
 713   bool has_content_area_focus_;
 714
 715   // The id of the current find operation, or -1 if none is in process.
 716   int find_identifier_;
 717
 718   // Helper object that creates resources.
 719   scoped_ptr<ppapi::thunk::ResourceCreationAPI> resource_creation_;
 720
 721   // The plugin-provided interfaces.
 722   // When adding PPP interfaces, make sure to reset them in ResetAsProxied.
 723   const PPP_Find_Private* plugin_find_interface_;
 724   const PPP_InputEvent* plugin_input_event_interface_;
 725   const PPP_MouseLock* plugin_mouse_lock_interface_;
 726   const PPP_Pdf* plugin_pdf_interface_;
 727   const PPP_Instance_Private* plugin_private_interface_;
 728   const PPP_Selection_Dev* plugin_selection_interface_;
 729   const PPP_TextInput_Dev* plugin_textinput_interface_;
 730   const PPP_Zoom_Dev* plugin_zoom_interface_;
 731
 732   // Flags indicating whether we have asked this plugin instance for the
 733   // corresponding interfaces, so that we can ask only once.
 734   // When adding flags, make sure to reset them in ResetAsProxied.
 735   bool checked_for_plugin_input_event_interface_;
 736   bool checked_for_plugin_pdf_interface_;
 737
 738   // This is only valid between a successful PrintBegin call and a PrintEnd
 739   // call.
 740   PP_PrintSettings_Dev current_print_settings_;
 741 #if defined(OS_MACOSX)
 742   // On the Mac, when we draw the bitmap to the PDFContext, it seems necessary
 743   // to keep the pixels valid until CGContextEndPage is called. We use this
 744   // variable to hold on to the pixels.
 745   scoped_refptr<PPB_ImageData_Impl> last_printed_page_;
 746 #endif  // defined(OS_MACOSX)
 747   // Always when printing to PDF on Linux and when printing for preview on Mac
 748   // and Win, the entire document goes into one metafile.  However, when users
 749   // print only a subset of all the pages, it is impossible to know if a call
 750   // to PrintPage() is the last call. Thus in PrintPage(), just store the page
 751   // number in |ranges_|. The hack is in PrintEnd(), where a valid |canvas_|
 752   // is preserved in PrintWebViewHelper::PrintPages. This makes it possible
 753   // to generate the entire PDF given the variables below:
 754   //
 755   // The most recently used WebCanvas, guaranteed to be valid.
 756   skia::RefPtr<blink::WebCanvas> canvas_;
 757   // An array of page ranges.
 758   std::vector<PP_PrintPageNumberRange_Dev> ranges_;
 759
 760   scoped_refptr<ppapi::Resource> gamepad_impl_;
 761   scoped_refptr<ppapi::Resource> uma_private_impl_;
 762
 763   // The plugin print interface.
 764   const PPP_Printing_Dev* plugin_print_interface_;
 765
 766   // The plugin 3D interface.
 767   const PPP_Graphics3D* plugin_graphics_3d_interface_;
 768
 769   // Contains the cursor if it's set by the plugin.
 770   scoped_ptr<blink::WebCursorInfo> cursor_;
 771
 772   // Set to true if this plugin thinks it will always be on top. This allows us
 773   // to use a more optimized painting path in some cases.
 774   bool always_on_top_;
 775   // Even if |always_on_top_| is true, the plugin is not fully visible if there
 776   // are some cut-out areas (occupied by iframes higher in the stacking order).
 777   // This information is used in the optimized painting path.
 778   std::vector<gfx::Rect> cut_outs_rects_;
 779
 780   // Implementation of PPB_FlashFullscreen.
 781
 782   // Plugin container for fullscreen mode. NULL if not in fullscreen mode. Note:
 783   // there is a transition state where fullscreen_container_ is non-NULL but
 784   // flash_fullscreen_ is false (see above).
 785   FullscreenContainer* fullscreen_container_;
 786
 787   // True if we are in "flash" fullscreen mode. False if we are in normal mode
 788   // or in transition to fullscreen. Normal fullscreen mode is indicated in
 789   // the ViewData.
 790   bool flash_fullscreen_;
 791
 792   // Implementation of PPB_Fullscreen.
 793
 794   // Since entering fullscreen mode is an asynchronous operation, we set this
 795   // variable to the desired state at the time we issue the fullscreen change
 796   // request. The plugin will receive a DidChangeView event when it goes
 797   // fullscreen.
 798   bool desired_fullscreen_state_;
 799
 800   // WebKit does not resize the plugin when going into fullscreen mode, so we do
 801   // this here by modifying the various plugin attributes and then restoring
 802   // them on exit.
 803   blink::WebString width_before_fullscreen_;
 804   blink::WebString height_before_fullscreen_;
 805   blink::WebString border_before_fullscreen_;
 806   blink::WebString style_before_fullscreen_;
 807   gfx::Size screen_size_for_fullscreen_;
 808
 809   // The MessageChannel used to implement bidirectional postMessage for the
 810   // instance.
 811   scoped_ptr<MessageChannel> message_channel_;
 812
 813   // Bitmap for crashed plugin. Lazily initialized, non-owning pointer.
 814   SkBitmap* sad_plugin_;
 815
 816   typedef std::set<PluginObject*> PluginObjectSet;
 817   PluginObjectSet live_plugin_objects_;
 818
 819   // Classes of events that the plugin has registered for, both for filtering
 820   // and not. The bits are PP_INPUTEVENT_CLASS_*.
 821   uint32_t input_event_mask_;
 822   uint32_t filtered_input_event_mask_;
 823
 824   // Text composition status.
 825   ui::TextInputType text_input_type_;
 826   gfx::Rect text_input_caret_;
 827   gfx::Rect text_input_caret_bounds_;
 828   bool text_input_caret_set_;
 829
 830   // Text selection status.
 831   std::string surrounding_text_;
 832   size_t selection_caret_;
 833   size_t selection_anchor_;
 834
 835   scoped_refptr<ppapi::TrackedCallback> lock_mouse_callback_;
 836
 837   // Track pending user gestures so out-of-process plugins can respond to
 838   // a user gesture after it has been processed.
 839   PP_TimeTicks pending_user_gesture_;
 840   blink::WebUserGestureToken pending_user_gesture_token_;
 841
 842   // We store the arguments so we can re-send them if we are reset to talk to
 843   // NaCl via the IPC NaCl proxy.
 844   std::vector<std::string> argn_;
 845   std::vector<std::string> argv_;
 846
 847   // Non-owning pointer to the document loader, if any.
 848   blink::WebURLLoaderClient* document_loader_;
 849   // State for deferring document loads. Used only by external instances.
 850   blink::WebURLResponse external_document_response_;
 851   scoped_ptr<ExternalDocumentLoader> external_document_loader_;
 852   bool external_document_load_;
 853
 854   // The ContentDecryptorDelegate forwards PPP_ContentDecryptor_Private
 855   // calls and handles PPB_ContentDecryptor_Private calls.
 856   scoped_ptr<ContentDecryptorDelegate> content_decryptor_delegate_;
 857
 858   // The link currently under the cursor.
 859   base::string16 link_under_cursor_;
 860
 861   // Dummy NPP value used when calling in to WebBindings, to allow the bindings
 862   // to correctly track NPObjects belonging to this plugin instance.
 863   scoped_ptr<struct _NPP> npp_;
 864
 865   // We store the isolate at construction so that we can be sure to use the
 866   // Isolate in which this Instance was created when interacting with v8.
 867   v8::Isolate* isolate_;
 868
 869   scoped_ptr<MouseLockDispatcher::LockTarget> lock_target_;
 870
 871   bool is_deleted_;
 872
 873   // The text that is currently selected in the plugin.
 874   base::string16 selected_text_;
 875
 876   int64 last_input_number_;
 877
 878   bool is_tracking_latency_;
 879
 880   // We use a weak ptr factory for scheduling DidChangeView events so that we
 881   // can tell whether updates are pending and consolidate them. When there's
 882   // already a weak ptr pending (HasWeakPtrs is true), code should update the
 883   // view_data_ but not send updates. This also allows us to cancel scheduled
 884   // view change events.
 885   base::WeakPtrFactory<PepperPluginInstanceImpl> view_change_weak_ptr_factory_;
 886   base::WeakPtrFactory<PepperPluginInstanceImpl> weak_factory_;
 887
 888   friend class PpapiPluginInstanceTest;
 889   DISALLOW_COPY_AND_ASSIGN(PepperPluginInstanceImpl);
 890 };
 891
 892 }  // namespace content
 893
 894 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_