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 "chrome/common/extensions/extension_constants.h"
  10 #include "third_party/WebKit/public/web/WebDocument.h"
  11 #include "third_party/WebKit/public/web/WebFrame.h"
  12 #include "v8/include/v8.h"
  13 #include "webkit/common/fileapi/file_system_util.h"
  14
  15 namespace extensions {
  16
  17 namespace {
  18
  19 // FileSystemObject GetMediaFileSystem(string file_system_url): construct
  20 // a file system object from a file system url.
  21 void GetMediaFileSystemObject(const v8::FunctionCallbackInfo<v8::Value>& args) {
  22   if (args.Length() != 1) {
  23     NOTREACHED();
  24     return;
  25   }
  26   if (!args[0]->IsString()) {
  27     NOTREACHED();
  28     return;
  29   }
  30
  31   std::string fsid(*v8::String::Utf8Value(args[0]));
  32   if (fsid.empty()) {
  33     NOTREACHED();
  34     return;
  35   }
  36
  37   blink::WebFrame* webframe = blink::WebFrame::frameForCurrentContext();
  38   const GURL origin = GURL(webframe->document().securityOrigin().toString());
  39   const std::string fs_name = fileapi::GetIsolatedFileSystemName(origin, fsid);
  40   const std::string root_url =
  41       fileapi::GetIsolatedFileSystemRootURIString(
  42           origin, fsid, extension_misc::kMediaFileSystemPathPart);
  43   args.GetReturnValue().Set(
  44       webframe->createFileSystem(blink::WebFileSystemTypeIsolated,
  45                                  blink::WebString::fromUTF8(fs_name),
  46                                  blink::WebString::fromUTF8(root_url)));
  47 }
  48
  49 }  // namespace
  50
  51 MediaGalleriesCustomBindings::MediaGalleriesCustomBindings(
  52     Dispatcher* dispatcher, ChromeV8Context* context)
  53     : ChromeV8Extension(dispatcher, context) {
  54   RouteFunction("GetMediaFileSystemObject",
  55                 base::Bind(&GetMediaFileSystemObject));
  56 }
  57
  58 }  // namespace extensions