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// Copyright 2015 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 "components/resource_provider/public/cpp/resource_loader.h"
#include <stddef.h>
#include <utility>
#include "base/bind.h"
#include "base/files/file.h"
#include "mojo/common/common_type_converters.h"
#include "mojo/platform_handle/platform_handle_functions.h"
#include "mojo/shell/public/cpp/application_impl.h"
#include "mojo/shell/public/cpp/connect.h"
#include "mojo/shell/public/interfaces/service_provider.mojom.h"
#include "mojo/shell/public/interfaces/shell.mojom.h"
namespace resource_provider {
namespace {
base::File GetFileFromHandle(mojo::ScopedHandle handle) {
CHECK(handle.is_valid());
MojoPlatformHandle platform_handle;
CHECK(MojoExtractPlatformHandle(handle.release().value(),
&platform_handle) == MOJO_RESULT_OK);
return base::File(platform_handle);
}
}
ResourceLoader::ResourceLoader(mojo::ApplicationImpl* app,
const std::set<std::string>& paths)
: loaded_(false), did_block_(false) {
app->ConnectToService("mojo:resource_provider", &resource_provider_);
std::vector<std::string> paths_vector(paths.begin(), paths.end());
resource_provider_->GetResources(
mojo::Array<mojo::String>::From(paths_vector),
base::Bind(&ResourceLoader::OnGotResources, base::Unretained(this),
paths_vector));
}
ResourceLoader::~ResourceLoader() {
}
bool ResourceLoader::BlockUntilLoaded() {
if (did_block_ || loaded_)
return loaded_;
did_block_ = true;
resource_provider_.WaitForIncomingResponse();
return loaded_;
}
base::File ResourceLoader::ReleaseFile(const std::string& path) {
CHECK(resource_map_.count(path));
scoped_ptr<base::File> file_wrapper(std::move(resource_map_[path]));
resource_map_.erase(path);
return std::move(*file_wrapper);
}
void ResourceLoader::OnGotResources(const std::vector<std::string>& paths,
mojo::Array<mojo::ScopedHandle> resources) {
CHECK(!resources.is_null());
CHECK_EQ(resources.size(), paths.size());
for (size_t i = 0; i < resources.size(); ++i) {
resource_map_[paths[i]].reset(
new base::File(GetFileFromHandle(std::move(resources[i]))));
}
loaded_ = true;
}
} // namespace resource_provider
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