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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_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
#define CHROME_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
#pragma once
#include <vector>
#include "base/process.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/appcache/appcache_frontend_proxy.h"
#include "chrome/browser/browser_message_filter.h"
#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
#include "ipc/ipc_message.h"
#include "webkit/appcache/appcache_backend_impl.h"
class ChromeAppCacheService;
class URLRequestContextGetter;
namespace net {
class URLRequestContext;
} // namespace net
// Handles appcache related messages sent to the main browser process from
// its child processes. There is a distinct host for each child process.
// Messages are handled on the IO thread. The BrowserRenderProcessHost and
// WorkerProcessHost create an instance and delegates calls to it.
class AppCacheDispatcherHost : public BrowserMessageFilter {
public:
// Constructor for use on the IO thread.
AppCacheDispatcherHost(net::URLRequestContext* request_context,
int process_id);
// Constructor for use on the UI thread.
AppCacheDispatcherHost(URLRequestContextGetter* request_context_getter,
int process_id);
~AppCacheDispatcherHost();
// BrowserIOMessageFilter implementation
virtual void OnChannelConnected(int32 peer_pid);
virtual bool OnMessageReceived(const IPC::Message& message,
bool* message_was_ok);
private:
// BrowserMessageFilter override.
virtual void BadMessageReceived();
// IPC message handlers
void OnRegisterHost(int host_id);
void OnUnregisterHost(int host_id);
void OnSelectCache(int host_id, const GURL& document_url,
int64 cache_document_was_loaded_from,
const GURL& opt_manifest_url);
void OnSelectCacheForWorker(int host_id, int parent_process_id,
int parent_host_id);
void OnSelectCacheForSharedWorker(int host_id, int64 appcache_id);
void OnMarkAsForeignEntry(int host_id, const GURL& document_url,
int64 cache_document_was_loaded_from);
void OnGetStatus(int host_id, IPC::Message* reply_msg);
void OnStartUpdate(int host_id, IPC::Message* reply_msg);
void OnSwapCache(int host_id, IPC::Message* reply_msg);
void OnGetResourceList(
int host_id,
std::vector<appcache::AppCacheResourceInfo>* resource_infos);
void GetStatusCallback(appcache::Status status, void* param);
void StartUpdateCallback(bool result, void* param);
void SwapCacheCallback(bool result, void* param);
// This is only valid once Initialize() has been called. This MUST be defined
// before backend_impl_ since the latter maintains a (non-refcounted) pointer
// to it.
scoped_refptr<ChromeAppCacheService> appcache_service_;
AppCacheFrontendProxy frontend_proxy_;
appcache::AppCacheBackendImpl backend_impl_;
// Temporary until OnChannelConnected() can be called from the IO thread,
// which will extract the AppCacheService from the net::URLRequestContext.
scoped_refptr<net::URLRequestContext> request_context_;
scoped_refptr<URLRequestContextGetter> request_context_getter_;
scoped_ptr<appcache::GetStatusCallback> get_status_callback_;
scoped_ptr<appcache::StartUpdateCallback> start_update_callback_;
scoped_ptr<appcache::SwapCacheCallback> swap_cache_callback_;
scoped_ptr<IPC::Message> pending_reply_msg_;
// The corresponding ChildProcessHost object's id().
int process_id_;
DISALLOW_COPY_AND_ASSIGN(AppCacheDispatcherHost);
};
#endif // CHROME_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
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