chrome/renderer/extensions/media_galleries_custom_bindings.cc

   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 #include "chrome/renderer/extensions/media_galleries_custom_bindings.h"
   6
   7 #include <string>
   8
   9 #include "extensions/renderer/script_context.h"
  10 #include "storage/common/fileapi/file_system_util.h"
  11 #include "third_party/WebKit/public/web/WebDOMFileSystem.h"
  12 #include "third_party/WebKit/public/web/WebDocument.h"
  13 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  14 #include "v8/include/v8.h"
  15
  16 namespace extensions {
  17
  18 MediaGalleriesCustomBindings::MediaGalleriesCustomBindings(
  19     ScriptContext* context)
  20     : ObjectBackedNativeHandler(context) {
  21   RouteFunction(
  22       "GetMediaFileSystemObject",
  23       base::Bind(&MediaGalleriesCustomBindings::GetMediaFileSystemObject,
  24                  base::Unretained(this)));
  25 }
  26
  27 // FileSystemObject GetMediaFileSystem(string file_system_url): construct
  28 // a file system object from a file system url.
  29 void MediaGalleriesCustomBindings::GetMediaFileSystemObject(
  30     const v8::FunctionCallbackInfo<v8::Value>& args) {
  31   CHECK_EQ(1, args.Length());
  32   CHECK(args[0]->IsString());
  33
  34   std::string fs_mount(*v8::String::Utf8Value(args[0]));
  35   CHECK(!fs_mount.empty());
  36
  37   blink::WebLocalFrame* webframe =
  38       blink::WebLocalFrame::frameForCurrentContext();
  39   const GURL origin = GURL(webframe->document().securityOrigin().toString());
  40   std::string fs_name =
  41       storage::GetFileSystemName(origin, storage::kFileSystemTypeExternal);
  42   fs_name.append("_");
  43   fs_name.append(fs_mount);
  44   const GURL root_url(
  45       storage::GetExternalFileSystemRootURIString(origin, fs_mount));
  46   args.GetReturnValue().Set(
  47       blink::WebDOMFileSystem::create(webframe,
  48                                       blink::WebFileSystemTypeExternal,
  49                                       blink::WebString::fromUTF8(fs_name),
  50                                       root_url)
  51           .toV8Value(context()->v8_context()->Global(), args.GetIsolate()));
  52 }
  53
  54 }  // namespace extensions