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// Copyright (c) 2011 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 "webkit/plugins/ppapi/ppb_file_system_impl.h"
#include "base/memory/ref_counted.h"
#include "ppapi/c/dev/ppb_file_system_dev.h"
#include "ppapi/c/pp_completion_callback.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
#include "webkit/fileapi/file_system_types.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/file_callbacks.h"
#include "webkit/plugins/ppapi/plugin_delegate.h"
#include "webkit/plugins/ppapi/plugin_module.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/ppb_directory_reader_impl.h"
#include "webkit/plugins/ppapi/resource.h"
#include "webkit/plugins/ppapi/resource_tracker.h"
namespace webkit {
namespace ppapi {
namespace {
PP_Resource Create(PP_Instance instance, PP_FileSystemType_Dev type) {
PluginInstance* plugin_instance =
ResourceTracker::Get()->GetInstance(instance);
if (!plugin_instance)
return 0;
if (type != PP_FILESYSTEMTYPE_EXTERNAL &&
type != PP_FILESYSTEMTYPE_LOCALPERSISTENT &&
type != PP_FILESYSTEMTYPE_LOCALTEMPORARY)
return 0;
PPB_FileSystem_Impl* file_system =
new PPB_FileSystem_Impl(plugin_instance, type);
return file_system->GetReference();
}
PP_Bool IsFileSystem(PP_Resource resource) {
scoped_refptr<PPB_FileSystem_Impl> file_system(
Resource::GetAs<PPB_FileSystem_Impl>(resource));
return BoolToPPBool(!!file_system.get());
}
int32_t Open(PP_Resource file_system_id,
int64 expected_size,
PP_CompletionCallback callback) {
scoped_refptr<PPB_FileSystem_Impl> file_system(
Resource::GetAs<PPB_FileSystem_Impl>(file_system_id));
if (!file_system)
return PP_ERROR_BADRESOURCE;
// Should not allow multiple opens.
if (file_system->called_open())
return PP_ERROR_FAILED;
file_system->set_called_open();
if ((file_system->type() != PP_FILESYSTEMTYPE_LOCALPERSISTENT) &&
(file_system->type() != PP_FILESYSTEMTYPE_LOCALTEMPORARY))
return PP_ERROR_FAILED;
PluginInstance* instance = file_system->instance();
fileapi::FileSystemType file_system_type =
(file_system->type() == PP_FILESYSTEMTYPE_LOCALTEMPORARY ?
fileapi::kFileSystemTypeTemporary :
fileapi::kFileSystemTypePersistent);
if (!instance->delegate()->OpenFileSystem(
instance->container()->element().document().frame()->url(),
file_system_type, expected_size,
new FileCallbacks(instance->module()->AsWeakPtr(), file_system_id,
callback, NULL, file_system, NULL)))
return PP_ERROR_FAILED;
return PP_ERROR_WOULDBLOCK;
}
PP_FileSystemType_Dev GetType(PP_Resource resource) {
scoped_refptr<PPB_FileSystem_Impl> file_system(
Resource::GetAs<PPB_FileSystem_Impl>(resource));
if (!file_system)
return PP_FILESYSTEMTYPE_INVALID;
return file_system->type();
}
const PPB_FileSystem_Dev ppb_filesystem = {
&Create,
&IsFileSystem,
&Open,
&GetType
};
} // namespace
PPB_FileSystem_Impl::PPB_FileSystem_Impl(PluginInstance* instance,
PP_FileSystemType_Dev type)
: Resource(instance),
instance_(instance),
type_(type),
opened_(false),
called_open_(false) {
DCHECK(type_ != PP_FILESYSTEMTYPE_INVALID);
}
PPB_FileSystem_Impl* PPB_FileSystem_Impl::AsPPB_FileSystem_Impl() {
return this;
}
const PPB_FileSystem_Dev* PPB_FileSystem_Impl::GetInterface() {
return &ppb_filesystem;
}
} // namespace ppapi
} // namespace webkit
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