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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.
#ifndef IOS_WEB_WEBUI_URL_FETCHER_BLOCK_ADAPTER_H_
#define IOS_WEB_WEBUI_URL_FETCHER_BLOCK_ADAPTER_H_
#import <Foundation/Foundation.h>
#include "base/mac/scoped_block.h"
#include "base/memory/scoped_ptr.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "url/gurl.h"
namespace net {
class URLFetcher;
class URLRequestContextGetter;
} // namespace net
namespace web {
// Class for use of URLFetcher from Objective-C with a completion handler block.
class URLFetcherBlockAdapter;
// Block type for URLFetcherBlockAdapter callbacks.
typedef void (^URLFetcherBlockAdapterCompletion)(NSData*,
URLFetcherBlockAdapter*);
// Class to manage retrieval of WebUI resources.
class URLFetcherBlockAdapter : public net::URLFetcherDelegate {
public:
// Creates URLFetcherBlockAdapter for resource at |url| with
// |request_context|.
// |completion_handler| is called with results of the fetch.
URLFetcherBlockAdapter(
const GURL& url,
net::URLRequestContextGetter* request_context,
web::URLFetcherBlockAdapterCompletion completion_handler);
~URLFetcherBlockAdapter() override;
// Starts the fetch.
virtual void Start();
protected:
// net::URLFetcherDelegate implementation.
void OnURLFetchComplete(const net::URLFetcher* source) override;
private:
// The URL to fetch.
const GURL url_;
// The request context.
net::URLRequestContextGetter* request_context_;
// Callback for resource load.
base::mac::ScopedBlock<web::URLFetcherBlockAdapterCompletion>
completion_handler_;
// URLFetcher for retrieving data from net stack.
scoped_ptr<net::URLFetcher> fetcher_;
};
} // namespace web
#endif // IOS_WEB_WEBUI_URL_FETCHER_BLOCK_ADAPTER_H_
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