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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 CONTENT_CHILD_QUOTA_DISPATCHER_H_
#define CONTENT_CHILD_QUOTA_DISPATCHER_H_
#include <map>
#include <set>
#include "base/basictypes.h"
#include "base/id_map.h"
#include "base/memory/ref_counted.h"
#include "webkit/child/worker_task_runner.h"
#include "webkit/common/quota/quota_types.h"
class GURL;
namespace IPC {
class Message;
}
namespace blink {
class WebStorageQuotaCallbacks;
}
namespace content {
class ThreadSafeSender;
class QuotaMessageFilter;
// Dispatches and sends quota related messages sent to/from a child
// process from/to the main browser process. There is one instance
// per each thread. Thread-specific instance can be obtained by
// ThreadSpecificInstance().
class QuotaDispatcher : public webkit_glue::WorkerTaskRunner::Observer {
public:
class Callback {
public:
virtual ~Callback() {}
virtual void DidQueryStorageUsageAndQuota(int64 usage, int64 quota) = 0;
virtual void DidGrantStorageQuota(int64 granted_quota) = 0;
virtual void DidFail(quota::QuotaStatusCode status) = 0;
};
QuotaDispatcher(ThreadSafeSender* thread_safe_sender,
QuotaMessageFilter* quota_message_filter);
virtual ~QuotaDispatcher();
// |thread_safe_sender| and |quota_message_filter| are used if
// calling this leads to construction.
static QuotaDispatcher* ThreadSpecificInstance(
ThreadSafeSender* thread_safe_sender,
QuotaMessageFilter* quota_message_filter);
// webkit_glue::WorkerTaskRunner::Observer implementation.
virtual void OnWorkerRunLoopStopped() OVERRIDE;
void OnMessageReceived(const IPC::Message& msg);
void QueryStorageUsageAndQuota(const GURL& gurl,
quota::StorageType type,
Callback* callback);
void RequestStorageQuota(int render_view_id,
const GURL& gurl,
quota::StorageType type,
int64 requested_size,
Callback* callback);
// Creates a new Callback instance for WebStorageQuotaCallbacks.
static Callback* CreateWebStorageQuotaCallbacksWrapper(
blink::WebStorageQuotaCallbacks* callbacks);
private:
// Message handlers.
void DidQueryStorageUsageAndQuota(int request_id,
int64 current_usage,
int64 current_quota);
void DidGrantStorageQuota(int request_id,
int64 granted_quota);
void DidFail(int request_id,
quota::QuotaStatusCode error);
IDMap<Callback, IDMapOwnPointer> pending_quota_callbacks_;
scoped_refptr<ThreadSafeSender> thread_safe_sender_;
scoped_refptr<QuotaMessageFilter> quota_message_filter_;
DISALLOW_COPY_AND_ASSIGN(QuotaDispatcher);
};
} // namespace content
#endif // CONTENT_CHILD_QUOTA_DISPATCHER_H_
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