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// Copyright (c) 2010 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_RENDERER_HOST_OFFLINE_RESOURCE_HANDLER_H_
#define CHROME_BROWSER_RENDERER_HOST_OFFLINE_RESOURCE_HANDLER_H_
#include <string>
#include "base/ref_counted.h"
#include "chrome/browser/chromeos/offline/offline_load_page.h"
#include "chrome/browser/renderer_host/resource_handler.h"
class MessageLoop;
class ResourceDispatcherHost;
class URLRequest;
// Used to show an offline interstitial page when the network is not available.
class OfflineResourceHandler : public ResourceHandler,
public chromeos::OfflineLoadPage::Delegate {
public:
OfflineResourceHandler(ResourceHandler* handler,
int host_id,
int render_view_id,
ResourceDispatcherHost* rdh,
URLRequest* request);
~OfflineResourceHandler() {}
// ResourceHandler implementation:
virtual bool OnUploadProgress(int request_id, uint64 position, uint64 size);
virtual bool OnRequestRedirected(int request_id, const GURL& new_url,
ResourceResponse* response, bool* defer);
virtual bool OnResponseStarted(int request_id, ResourceResponse* response);
virtual bool OnWillStart(int request_id, const GURL& url, bool* defer);
virtual bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
int min_size);
virtual bool OnReadCompleted(int request_id, int* bytes_read);
virtual bool OnResponseCompleted(int request_id,
const URLRequestStatus& status,
const std::string& security_info);
virtual void OnRequestClosed();
// chromeos::OfflineLoadPage::Delegate
virtual void OnBlockingPageComplete(bool proceed);
private:
// Erease the state assocaited with a deferred load request.
void ClearRequestInfo();
bool IsRemote(const GURL& url) const;
// Resume the deferred load request.
void Resume();
// Tells if chrome should show the offline page.
bool ShouldShowOfflinePage(const GURL& url) const;
// Shows the offline interstitinal page in UI thread.
void ShowOfflinePage();
scoped_refptr<ResourceHandler> next_handler_;
int process_host_id_;
int render_view_id_;
ResourceDispatcherHost* rdh_;
URLRequest* request_;
// The state for deferred load quest.
int deferred_request_id_;
GURL deferred_url_;
DISALLOW_COPY_AND_ASSIGN(OfflineResourceHandler);
};
#endif // CHROME_BROWSER_RENDERER_HOST_OFFLINE_RESOURCE_HANDLER_H_
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