Implement pepper::FileIO.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/3329014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@59045 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 62 insertions, 1 deletions

diff --git a/chrome/renderer/pepper_plugin_delegate_impl.cc b/chrome/renderer/pepper_plugin_delegate_impl.cc
index 8e6763c..a3f2735 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.cc
+++ b/chrome/renderer/pepper_plugin_delegate_impl.cc
@@ -5,6 +5,7 @@
 #include "chrome/renderer/pepper_plugin_delegate_impl.h"
 
 #include "app/surface/transport_dib.h"
+#include "base/file_path.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
@@ -12,12 +13,14 @@
 #include "chrome/common/render_messages_params.h"
 #include "chrome/renderer/audio_message_filter.h"
 #include "chrome/renderer/command_buffer_proxy.h"
+#include "chrome/renderer/render_thread.h"
 #include "chrome/renderer/render_view.h"
 #include "chrome/renderer/webplugin_delegate_proxy.h"
 #include "third_party/ppapi/c/dev/pp_video_dev.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFileChooserCompletion.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFileChooserParams.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebPluginContainer.h"
+#include "webkit/glue/plugins/pepper_file_io.h"
 #include "webkit/glue/plugins/pepper_plugin_instance.h"
 #include "webkit/glue/plugins/webplugin.h"
 
@@ -472,7 +475,8 @@ class PlatformVideoDecoderImpl
 }  // namespace
 
 PepperPluginDelegateImpl::PepperPluginDelegateImpl(RenderView* render_view)
-    : render_view_(render_view) {
+    : render_view_(render_view),
+      id_generator_(0) {
 }
 
 void PepperPluginDelegateImpl::ViewInitiatedPaint() {
@@ -609,3 +613,31 @@ bool PepperPluginDelegateImpl::RunFileChooser(
     WebKit::WebFileChooserCompletion* chooser_completion) {
   return render_view_->runFileChooser(params, chooser_completion);
 }
+
+bool PepperPluginDelegateImpl::AsyncOpenFile(const FilePath& path,
+                                             int flags,
+                                             AsyncOpenFileCallback* callback) {
+  int message_id = id_generator_++;
+  DCHECK(!messages_waiting_replies_.Lookup(message_id));
+  messages_waiting_replies_.AddWithID(callback, message_id);
+  IPC::Message* msg = new ViewHostMsg_AsyncOpenFile(
+      render_view_->routing_id(), path, flags, message_id);
+  return render_view_->Send(msg);
+}
+
+void PepperPluginDelegateImpl::OnAsyncFileOpened(
+    base::PlatformFileError error_code,
+    base::PlatformFile file,
+    int message_id) {
+  AsyncOpenFileCallback* callback =
+      messages_waiting_replies_.Lookup(message_id);
+  DCHECK(callback);
+  messages_waiting_replies_.Remove(message_id);
+  callback->Run(error_code, file);
+  delete callback;
+}
+
+scoped_refptr<base::MessageLoopProxy>
+PepperPluginDelegateImpl::GetFileThreadMessageLoopProxy() {
+  return RenderThread::current()->GetFileThreadMessageLoopProxy();
+}
diff --git a/chrome/renderer/pepper_plugin_delegate_impl.h b/chrome/renderer/pepper_plugin_delegate_impl.h
index 1930fa8..ebc19ee 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.h
+++ b/chrome/renderer/pepper_plugin_delegate_impl.h
@@ -9,14 +9,17 @@
 #include <set>
 
 #include "base/basictypes.h"
+#include "base/id_map.h"
 #include "base/weak_ptr.h"
 #include "third_party/ppapi/c/pp_errors.h"
 #include "webkit/glue/plugins/pepper_plugin_delegate.h"
 #include "webkit/glue/plugins/pepper_plugin_instance.h"
 
+class FilePath;
 class RenderView;
 
 namespace pepper {
+class FileIO;
 class PluginInstance;
 }
 
@@ -37,6 +40,11 @@ class PepperPluginDelegateImpl
   void ViewInitiatedPaint();
   void ViewFlushedPaint();
 
+  // Called by RenderView when ViewMsg_AsyncOpenFile_ACK.
+  void OnAsyncFileOpened(base::PlatformFileError error_code,
+                         base::PlatformFile file,
+                         int message_id);
+
   // pepper::PluginDelegate implementation.
   virtual void InstanceCreated(pepper::PluginInstance* instance);
   virtual void InstanceDeleted(pepper::PluginInstance* instance);
@@ -55,6 +63,10 @@ class PepperPluginDelegateImpl
   virtual bool RunFileChooser(
       const WebKit::WebFileChooserParams& params,
       WebKit::WebFileChooserCompletion* chooser_completion);
+  virtual bool AsyncOpenFile(const FilePath& path,
+                             int flags,
+                             AsyncOpenFileCallback* callback);
+  virtual scoped_refptr<base::MessageLoopProxy> GetFileThreadMessageLoopProxy();
 
  private:
   // Pointer to the RenderView that owns us.
@@ -62,6 +74,9 @@ class PepperPluginDelegateImpl
 
   std::set<pepper::PluginInstance*> active_instances_;
 
+  int id_generator_;
+  IDMap<AsyncOpenFileCallback> messages_waiting_replies_;
+
   DISALLOW_COPY_AND_ASSIGN(PepperPluginDelegateImpl);
 };
 
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 0f40d00..ed19289 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -805,6 +805,7 @@ void RenderView::OnMessageReceived(const IPC::Message& message) {
                         OnAccessibilityObjectChildrenChangeAck)
     IPC_MESSAGE_HANDLER(ViewMsg_OpenFileSystemRequest_Complete,
                         OnOpenFileSystemRequestComplete)
+    IPC_MESSAGE_HANDLER(ViewMsg_AsyncOpenFile_ACK, OnAsyncFileOpened)
 
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(RenderWidget::OnMessageReceived(message))
@@ -5689,3 +5690,12 @@ void RenderView::OnOpenFileSystemRequestComplete(
   request->callbacks = NULL;
   pending_file_system_requests_.Remove(request_id);
 }
+
+void RenderView::OnAsyncFileOpened(base::PlatformFileError error_code,
+                                   IPC::PlatformFileForTransit file_for_transit,
+                                   int message_id) {
+  pepper_delegate_.OnAsyncFileOpened(
+      error_code,
+      IPC::PlatformFileForTransitToPlatformFile(file_for_transit),
+      message_id);
+}
diff --git a/chrome/renderer/render_view.h b/chrome/renderer/render_view.h
index cf06c09..cd57b10 100644
--- a/chrome/renderer/render_view.h
+++ b/chrome/renderer/render_view.h
@@ -855,6 +855,10 @@ class RenderView : public RenderWidget,
 #endif
   void OnZoom(PageZoom::Function function);
 
+  void OnAsyncFileOpened(base::PlatformFileError error_code,
+                         IPC::PlatformFileForTransit file_for_transit,
+                         int message_id);
+
   // Adding a new message handler? Please add it in alphabetical order above
   // and put it in the same position in the .cc file.