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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.
#ifndef CHROME_BROWSER_CHROMEOS_GVIEW_REQUEST_INTERCEPTOR_H__
#define CHROME_BROWSER_CHROMEOS_GVIEW_REQUEST_INTERCEPTOR_H__
#include <string>
#include "base/compiler_specific.h"
#include "base/hash_tables.h"
#include "net/url_request/url_request_job_factory.h"
namespace chromeos {
// This class integrates the Google Document Viewer into ChromeOS,
// enabling the viewing of supported document types that the user
// clicks on. This class will intercept requests to supported
// document types (such as PDF) and redirect the request to the Google
// Document Viewer, including the document's original URL as a
// parameter.
class GViewRequestInterceptor : public net::URLRequestJobFactory::Interceptor {
public:
GViewRequestInterceptor();
virtual ~GViewRequestInterceptor();
// Always returns NULL because we don't want to attempt a redirect
// before seeing the detected mime type of the request.
virtual net::URLRequestJob* MaybeIntercept(
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const OVERRIDE;
// Always returns NULL.
virtual net::URLRequestJob* MaybeInterceptRedirect(
const GURL& location,
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const OVERRIDE;
// Determines if the requested document can be viewed by the Google
// Document Viewer. If it can, returns a net::URLRequestJob that
// redirects the browser to the view URL.
virtual net::URLRequestJob* MaybeInterceptResponse(
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const OVERRIDE;
private:
bool ShouldUsePdfPlugin(net::URLRequest* request) const;
bool ShouldInterceptScheme(const std::string& scheme) const;
// The list of supported mime types.
base::hash_set<std::string> supported_mime_types_;
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_GVIEW_REQUEST_INTERCEPTOR_H__
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