webkit/plugins/ppapi/ppb_file_system_impl.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 "webkit/plugins/ppapi/ppb_file_system_impl.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "ppapi/c/pp_completion_callback.h"
   9 #include "ppapi/c/ppb_file_system.h"
  10 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
  11 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
  12 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
  13 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
  14 #include "webkit/fileapi/file_system_types.h"
  15 #include "webkit/plugins/ppapi/common.h"
  16 #include "webkit/plugins/ppapi/file_callbacks.h"
  17 #include "webkit/plugins/ppapi/plugin_delegate.h"
  18 #include "webkit/plugins/ppapi/plugin_module.h"
  19 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
  20 #include "webkit/plugins/ppapi/resource_helper.h"
  21
  22 using ppapi::thunk::PPB_FileSystem_API;
  23 using ppapi::TrackedCallback;
  24
  25 namespace webkit {
  26 namespace ppapi {
  27
  28 PPB_FileSystem_Impl::PPB_FileSystem_Impl(PP_Instance instance,
  29                                          PP_FileSystemType type)
  30     : Resource(::ppapi::OBJECT_IS_IMPL, instance),
  31       type_(type),
  32       opened_(false),
  33       called_open_(false) {
  34   DCHECK(type_ != PP_FILESYSTEMTYPE_INVALID);
  35 }
  36
  37 PPB_FileSystem_Impl::~PPB_FileSystem_Impl() {
  38 }
  39
  40 // static
  41 PP_Resource PPB_FileSystem_Impl::Create(PP_Instance instance,
  42                                         PP_FileSystemType type) {
  43   if (type != PP_FILESYSTEMTYPE_EXTERNAL &&
  44       type != PP_FILESYSTEMTYPE_LOCALPERSISTENT &&
  45       type != PP_FILESYSTEMTYPE_LOCALTEMPORARY)
  46     return 0;
  47   return (new PPB_FileSystem_Impl(instance, type))->GetReference();
  48 }
  49
  50 PPB_FileSystem_API* PPB_FileSystem_Impl::AsPPB_FileSystem_API() {
  51   return this;
  52 }
  53
  54 int32_t PPB_FileSystem_Impl::Open(int64_t expected_size,
  55                                   scoped_refptr<TrackedCallback> callback) {
  56   // Should not allow multiple opens.
  57   if (called_open_)
  58     return PP_ERROR_INPROGRESS;
  59   called_open_ = true;
  60
  61   fileapi::FileSystemType file_system_type;
  62   switch (type_) {
  63     case PP_FILESYSTEMTYPE_LOCALTEMPORARY:
  64       file_system_type = fileapi::kFileSystemTypeTemporary;
  65       break;
  66     case PP_FILESYSTEMTYPE_LOCALPERSISTENT:
  67       file_system_type = fileapi::kFileSystemTypePersistent;
  68       break;
  69     case PP_FILESYSTEMTYPE_EXTERNAL:
  70       file_system_type = fileapi::kFileSystemTypeExternal;
  71       break;
  72     default:
  73       return PP_ERROR_FAILED;
  74   }
  75
  76  PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
  77   if (!plugin_instance)
  78     return PP_ERROR_FAILED;
  79
  80   if (!plugin_instance->delegate()->OpenFileSystem(
  81       GURL(plugin_instance->container()->element().document().url()).
  82           GetOrigin(),
  83       file_system_type, expected_size,
  84       new FileCallbacks(this, callback, NULL,
  85                         scoped_refptr<PPB_FileSystem_Impl>(this))))
  86     return PP_ERROR_FAILED;
  87   return PP_OK_COMPLETIONPENDING;
  88 }
  89
  90 PP_FileSystemType PPB_FileSystem_Impl::GetType() {
  91   return type_;
  92 }
  93
  94 }  // namespace ppapi
  95 }  // namespace webkit