Initial extension bindings for Media Gallery API.

BUG=110823
TEST=NONE


Review URL: https://chromiumcodereview.appspot.com/10256015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136677 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 97 insertions, 0 deletions

diff --git a/chrome/renderer/extensions/extension_dispatcher.cc b/chrome/renderer/extensions/extension_dispatcher.cc
index 2d61902..1d96259 100644
--- a/chrome/renderer/extensions/extension_dispatcher.cc
+++ b/chrome/renderer/extensions/extension_dispatcher.cc
@@ -31,6 +31,7 @@
 #include "chrome/renderer/extensions/file_browser_handler_custom_bindings.h"
 #include "chrome/renderer/extensions/file_browser_private_custom_bindings.h"
 #include "chrome/renderer/extensions/i18n_custom_bindings.h"
+#include "chrome/renderer/extensions/media_gallery_custom_bindings.h"
 #include "chrome/renderer/extensions/miscellaneous_bindings.h"
 #include "chrome/renderer/extensions/page_actions_custom_bindings.h"
 #include "chrome/renderer/extensions/page_capture_custom_bindings.h"
@@ -77,6 +78,7 @@ using extensions::FileBrowserHandlerCustomBindings;
 using extensions::FileBrowserPrivateCustomBindings;
 using extensions::I18NCustomBindings;
 using extensions::MiscellaneousBindings;
+using extensions::MediaGalleryCustomBindings;
 using extensions::PageActionsCustomBindings;
 using extensions::PageCaptureCustomBindings;
 using extensions::SendRequestNatives;
@@ -469,6 +471,8 @@ void ExtensionDispatcher::RegisterNativeHandlers(ModuleSystem* module_system,
   module_system->RegisterNativeHandler("extension",
       scoped_ptr<NativeHandler>(
           new ExtensionCustomBindings(this)));
+  module_system->RegisterNativeHandler("experimental_mediaGalleries",
+      scoped_ptr<NativeHandler>(new MediaGalleryCustomBindings()));
   module_system->RegisterNativeHandler("experimental_usb",
       scoped_ptr<NativeHandler>(new ExperimentalUsbCustomBindings()));
   module_system->RegisterNativeHandler("file_browser_handler",
@@ -518,6 +522,8 @@ void ExtensionDispatcher::PopulateSourceMap() {
   source_map_.RegisterSource("declarativeWebRequest",
                              IDR_DECLARATIVE_WEBREQUEST_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("devtools", IDR_DEVTOOLS_CUSTOM_BINDINGS_JS);
+  source_map_.RegisterSource("experimental.mediaGalleries",
+                             IDR_MEDIA_GALLERY_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("experimental.offscreen",
                              IDR_EXPERIMENTAL_OFFSCREENTABS_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("experimental.runtime",
diff --git a/chrome/renderer/extensions/media_gallery_custom_bindings.cc b/chrome/renderer/extensions/media_gallery_custom_bindings.cc
new file mode 100644
index 0000000..e87b9e40
--- /dev/null
+++ b/chrome/renderer/extensions/media_gallery_custom_bindings.cc
@@ -0,0 +1,57 @@
+// 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.
+
+#include "chrome/renderer/extensions/media_gallery_custom_bindings.h"
+
+#include "content/public/renderer/render_view.h"
+#include "grit/renderer_resources.h"
+#include "v8/include/v8.h"
+
+namespace extensions {
+
+MediaGalleryCustomBindings::MediaGalleryCustomBindings()
+    : ChromeV8Extension(NULL) {
+  RouteFunction(
+      "GetMediaFileSystemObject",
+      base::Bind(&MediaGalleryCustomBindings::GetMediaFileSystemObject,
+                 base::Unretained(this)));
+  RouteFunction(
+      "ExtractEmbeddedThumbnails",
+      base::Bind(&MediaGalleryCustomBindings::ExtractEmbeddedThumbnails,
+                 base::Unretained(this)));
+}
+
+v8::Handle<v8::Value> MediaGalleryCustomBindings::GetMediaFileSystemObject(
+    const v8::Arguments& args) {
+  if (args.Length() != 1) {
+    NOTREACHED();
+    return v8::Undefined();
+  }
+  if (!args[0]->IsString()) {
+    NOTREACHED();
+    return v8::Undefined();
+  }
+
+  std::string file_system_url;
+  file_system_url = *v8::String::Utf8Value(args[1]->ToString());
+  if (file_system_url.empty())
+    return v8::Undefined();
+
+  // TODO(vandebo) Create and return a FileSystem object.
+  return v8::Undefined();
+}
+
+v8::Handle<v8::Value> MediaGalleryCustomBindings::ExtractEmbeddedThumbnails(
+    const v8::Arguments& args) {
+  if (args.Length() != 1) {
+    NOTREACHED() << "Bad arguments";
+    return v8::Undefined();
+  }
+  // TODO(vandebo) Check that the object is a FileEntry.
+
+  // TODO(vandebo) Create and return a Directory entry object.
+  return v8::Null();
+}
+
+}  // namespace extensions
diff --git a/chrome/renderer/extensions/media_gallery_custom_bindings.h b/chrome/renderer/extensions/media_gallery_custom_bindings.h
new file mode 100644
index 0000000..4e3744e
--- /dev/null
+++ b/chrome/renderer/extensions/media_gallery_custom_bindings.h
@@ -0,0 +1,34 @@
+// 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 CHROME_RENDERER_EXTENSIONS_MEDIA_GALLERY_CUSTOM_BINDINGS_H_
+#define CHROME_RENDERER_EXTENSIONS_MEDIA_GALLERY_CUSTOM_BINDINGS_H_
+#pragma once
+
+#include "chrome/renderer/extensions/chrome_v8_extension.h"
+
+namespace extensions {
+
+// Implements custom bindings for the media gallery API.
+class MediaGalleryCustomBindings : public ChromeV8Extension {
+ public:
+  MediaGalleryCustomBindings();
+
+ private:
+  // FileSystemObject GetMediaFileSystem(string file_system_url): construct
+  // a file system object from a file system url.
+  v8::Handle<v8::Value> GetMediaFileSystemObject(const v8::Arguments& args);
+
+  // DirectoryReader GetMediaFileSystem(FileEntry): synchronously return a
+  // directory reader for a virtual directory.  The directory will contain
+  // all of the thumbnails embedded in the passed file.
+  v8::Handle<v8::Value> ExtractEmbeddedThumbnails(const v8::Arguments& args);
+
+  DISALLOW_COPY_AND_ASSIGN(MediaGalleryCustomBindings);
+};
+
+}  // extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_MEDIA_GALLERY_CUSTOM_BINDINGS_H_
+