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// Copyright (c) 2013 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 "ppapi/proxy/directory_reader_resource.h"
#include "base/bind.h"
#include "ipc/ipc_message.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/proxy/dispatch_reply_message.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppb_file_ref_proxy.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/resource_tracker.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_file_ref_api.h"
using ppapi::proxy::PPB_FileRef_Proxy;
namespace ppapi {
namespace proxy {
namespace {
void ReleaseEntries(const std::vector<PP_DirectoryEntry_Dev>& entries) {
ResourceTracker* tracker = PpapiGlobals::Get()->GetResourceTracker();
for (std::vector<PP_DirectoryEntry_Dev>::const_iterator it = entries.begin();
it != entries.end(); ++it)
tracker->ReleaseResource(it->file_ref);
}
} // namespace
DirectoryReaderResource::DirectoryReaderResource(
Connection connection,
PP_Instance instance,
PP_Resource directory_ref)
: PluginResource(connection, instance) {
directory_resource_ =
PpapiGlobals::Get()->GetResourceTracker()->GetResource(directory_ref);
}
DirectoryReaderResource::~DirectoryReaderResource() {
}
thunk::PPB_DirectoryReader_API*
DirectoryReaderResource::AsPPB_DirectoryReader_API() {
return this;
}
int32_t DirectoryReaderResource::ReadEntries(
const PP_ArrayOutput& output,
scoped_refptr<TrackedCallback> callback) {
if (TrackedCallback::IsPending(callback_))
return PP_ERROR_INPROGRESS;
callback_ = callback;
if (!sent_create_to_renderer())
SendCreate(RENDERER, PpapiHostMsg_DirectoryReader_Create());
PpapiHostMsg_DirectoryReader_GetEntries msg(
directory_resource_->host_resource());
Call<PpapiPluginMsg_DirectoryReader_GetEntriesReply>(
RENDERER, msg,
base::Bind(&DirectoryReaderResource::OnPluginMsgGetEntriesReply,
this, output));
return PP_OK_COMPLETIONPENDING;
}
void DirectoryReaderResource::OnPluginMsgGetEntriesReply(
const PP_ArrayOutput& output,
const ResourceMessageReplyParams& params,
const std::vector<ppapi::PPB_FileRef_CreateInfo>& infos,
const std::vector<PP_FileType>& file_types) {
CHECK_EQ(infos.size(), file_types.size());
std::vector<PP_DirectoryEntry_Dev> entries;
for (std::vector<ppapi::PPB_FileRef_CreateInfo>::size_type i = 0;
i < infos.size(); ++i) {
PP_DirectoryEntry_Dev entry;
entry.file_ref = PPB_FileRef_Proxy::DeserializeFileRef(infos[i]);
entry.file_type = file_types[i];
entries.push_back(entry);
}
if (!TrackedCallback::IsPending(callback_)) {
ReleaseEntries(entries);
entries.clear();
return;
}
ArrayWriter writer(output);
if (!writer.is_valid()) {
ReleaseEntries(entries);
entries.clear();
callback_->Run(PP_ERROR_FAILED);
return;
}
writer.StoreVector(entries);
entries.clear();
callback_->Run(params.result());
}
} // namespace proxy
} // namespace ppapi
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