Implementation of URLLoader using PluginResource/ResourceHost.

webkit/plugins/ppapi/ppapi_plugin_instance.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 28 matching lines @@
 #include "ppapi/c/private/ppb_nacl_private.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/shared_impl/ppb_instance_shared.h"
 #include "ppapi/shared_impl/ppb_view_shared.h"
 #include "ppapi/shared_impl/singleton_resource_id.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/ppb_gamepad_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebCanvas.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebURLLoaderClient.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebURLResponse.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebUserGestureToken.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/rect.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppp_pdf.h"
 #include "webkit/plugins/webkit_plugins_export.h"
 
 struct PP_Point;
 
 class SkBitmap;
 class TransportDIB;
 
 namespace WebKit {
 class WebInputEvent;
 class WebLayer;
 class WebMouseEvent;
 class WebPluginContainer;
+class WebURLLoader;
+class WebURLResponse;
 struct WebCompositionUnderline;
 struct WebCursorInfo;
+struct WebURLError;
 struct WebPrintParams;
 }
 
 namespace cc {
 class TextureLayer;
 }
 
 namespace ppapi {
 struct InputEventData;
 struct PPP_Instance_Combined;
@@ skipping 44 matching lines @@
   MessageChannel& message_channel() { return *message_channel_; }
 
   WebKit::WebPluginContainer* container() const { return container_; }
 
   void set_always_on_top(bool on_top) { always_on_top_ = on_top; }
 
   // Returns the PP_Instance uniquely identifying this instance. Guaranteed
   // nonzero.
   PP_Instance pp_instance() const { return pp_instance_; }
 
+  ::ppapi::PPP_Instance_Combined* instance_interface() const {
+    return instance_interface_.get();
+  }
+
   ::ppapi::thunk::ResourceCreationAPI& resource_creation() {
     return *resource_creation_.get();
   }
 
   // Does some pre-destructor cleanup on the instance. This is necessary
   // because some cleanup depends on the plugin instance still existing (like
   // calling the plugin's DidDestroy function). This function is called from
   // the WebPlugin implementation when WebKit is about to remove the plugin.
   void Delete();
 
@@ skipping 22 matching lines @@
   void CommitBackingTexture();
 
   // Called when the out-of-process plugin implementing this instance crashed.
   void InstanceCrashed();
 
   // PPB_Instance and PPB_Instance_Private implementation.
   const GURL& plugin_url() const { return plugin_url_; }
   bool full_frame() const { return full_frame_; }
   const ::ppapi::ViewData& view_data() const { return view_data_; }
 
-  // PPP_Instance and PPP_Instance_Private pass-through.
+  // PPP_Instance and PPP_Instance_Private.
   bool Initialize(const std::vector<std::string>& arg_names,
                   const std::vector<std::string>& arg_values,
                   bool full_frame);
-  bool HandleDocumentLoad(PPB_URLLoader_Impl* loader);
+  bool HandleDocumentLoad(const WebKit::WebURLResponse& response);
   bool HandleInputEvent(const WebKit::WebInputEvent& event,
                         WebKit::WebCursorInfo* cursor_info);
   PP_Var GetInstanceObject();
   void ViewChanged(const gfx::Rect& position, const gfx::Rect& clip,
                    const std::vector<gfx::Rect>& cut_outs_rects);
 
   // Handlers for composition events.
   bool HandleCompositionStart(const base::string16& text);
   bool HandleCompositionUpdate(
       const base::string16& text,
@@ skipping 154 matching lines @@
   // Simulates an input event to the plugin by passing it down to WebKit,
   // which sends it back up to the plugin as if it came from the user.
   void SimulateInputEvent(const ::ppapi::InputEventData& input_event);
 
   // Simulates an IME event at the level of RenderView which sends it back up to
   // the plugin as if it came from the user.
   bool SimulateIMEEvent(const ::ppapi::InputEventData& input_event);
   void SimulateImeSetCompositionEvent(
       const ::ppapi::InputEventData& input_event);
 
+  // The document loader is valid when the plugin is "full-frame" and in this
+  // case is non-NULL as long as the corresponding loader resource is alive.
+  // This pointer is non-owning, so the loader must use set_document_loader to
+  // clear itself when it is destroyed.
+  WebKit::WebURLLoaderClient* document_loader() const {
+    return document_loader_;
+  }
+  void set_document_loader(WebKit::WebURLLoaderClient* loader) {
+    document_loader_ = loader;
+  }
+
   ContentDecryptorDelegate* GetContentDecryptorDelegate();
 
   // PPB_Instance_API implementation.
   virtual PP_Bool BindGraphics(PP_Instance instance,
                                PP_Resource device) OVERRIDE;
   virtual PP_Bool IsFullFrame(PP_Instance instance) OVERRIDE;
   virtual const ::ppapi::ViewData* GetViewData(PP_Instance instance) OVERRIDE;
   virtual PP_Bool FlashIsFullscreen(PP_Instance instance) OVERRIDE;
   virtual PP_Var GetWindowObject(PP_Instance instance) OVERRIDE;
   virtual PP_Var GetOwnerElementObject(PP_Instance instance) OVERRIDE;
@@ skipping 113 matching lines @@
   // Checks whether this is a valid instance of the given module. After calling
   // ResetAsProxied above, a NaCl plugin instance's module changes, so external
   // hosts won't recognize it as a valid instance of the original module. This
   // method fixes that be checking that either module_ or original_module_ match
   // the given module.
   bool IsValidInstanceOf(PluginModule* module);
 
  private:
   friend class PpapiUnittest;
 
+  // Class to record document load notifications and play them back once the
+  // real document loader becomes available. Used only by NaCl instances.
+  class NaClDocumentLoader : public WebKit::WebURLLoaderClient {
+   public:
+    NaClDocumentLoader();
+    virtual ~NaClDocumentLoader();
+
+    void ReplayReceivedData(WebURLLoaderClient* document_loader);
+
+    // WebKit::WebURLLoaderClient implementation.
+    virtual void didReceiveData(WebKit::WebURLLoader* loader,
+                                const char* data,
+                                int data_length,
+                                int encoded_data_length);
+    virtual void didFinishLoading(WebKit::WebURLLoader* loader,
+                                  double finish_time);
+    virtual void didFail(WebKit::WebURLLoader* loader,
+                         const WebKit::WebURLError& error);
+
+   private:
+    std::list<std::string> data_;
+    bool finished_loading_;
+    scoped_ptr<WebKit::WebURLError> error_;
+  };
+
   // Implements PPB_Gamepad_API. This is just to avoid having an excessive
   // number of interfaces implemented by PluginInstance.
   class GamepadImpl : public ::ppapi::thunk::PPB_Gamepad_API,
                       public ::ppapi::Resource {
    public:
     explicit GamepadImpl(PluginDelegate* delegate);
     // Resource implementation.
     virtual ::ppapi::thunk::PPB_Gamepad_API* AsPPB_Gamepad_API() OVERRIDE;
     virtual void Sample(PP_Instance instance,
                         PP_GamepadsSampleData* data) OVERRIDE;
@@ skipping 273 matching lines @@
   // Track pending user gestures so out-of-process plugins can respond to
   // a user gesture after it has been processed.
   PP_TimeTicks pending_user_gesture_;
   WebKit::WebUserGestureToken pending_user_gesture_token_;
 
   // We store the arguments so we can re-send them if we are reset to talk to
   // NaCl via the IPC NaCl proxy.
   std::vector<std::string> argn_;
   std::vector<std::string> argv_;
 
-  // This is NULL unless HandleDocumentLoad has called. In that case, we store
-  // the pointer so we can re-send it later if we are reset to talk to NaCl.
-  scoped_refptr<PPB_URLLoader_Impl> document_loader_;
+  // Non-owning pointer to the document loader, if any.
+  WebKit::WebURLLoaderClient* document_loader_;
+  // State for deferring document loads. Used only by NaCl instances.
+  WebKit::WebURLResponse nacl_document_response_;
+  scoped_ptr<NaClDocumentLoader> nacl_document_loader_;
+  bool nacl_document_load_;
 
   // The ContentDecryptorDelegate forwards PPP_ContentDecryptor_Private
   // calls and handles PPB_ContentDecryptor_Private calls.
   scoped_ptr<ContentDecryptorDelegate> content_decryptor_delegate_;
 
   friend class PpapiPluginInstanceTest;
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_