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// Copyright 2014 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_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
#define CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
#include <list>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
#include "base/time/time.h"
#include "content/browser/shared_worker/shared_worker_message_filter.h"
#include "content/browser/worker_host/worker_document_set.h"
class GURL;
namespace IPC {
class Message;
}
namespace content {
class SharedWorkerMessageFilter;
class SharedWorkerInstance;
// The SharedWorkerHost is the interface that represents the browser side of
// the browser <-> worker communication channel.
class SharedWorkerHost {
public:
SharedWorkerHost(SharedWorkerInstance* instance,
SharedWorkerMessageFilter* filter,
int worker_route_id);
~SharedWorkerHost();
// Sends |message| to the SharedWorker.
bool Send(IPC::Message* message);
// Starts the SharedWorker in the renderer process which is associated with
// |filter_|.
void Start(bool pause_on_start);
// Returns true iff the given message from a renderer process was forwarded to
// the worker.
bool FilterMessage(const IPC::Message& message,
SharedWorkerMessageFilter* filter);
// Handles the shutdown of the filter. If the worker has no other client,
// sends TerminateWorkerContext message to shut it down.
void FilterShutdown(SharedWorkerMessageFilter* filter);
// Shuts down any shared workers that are no longer referenced by active
// documents.
void DocumentDetached(SharedWorkerMessageFilter* filter,
unsigned long long document_id);
void WorkerContextClosed();
void WorkerScriptLoaded();
void WorkerScriptLoadFailed();
void WorkerConnected(int message_port_id);
void WorkerContextDestroyed();
void AllowDatabase(const GURL& url,
const base::string16& name,
const base::string16& display_name,
unsigned long estimated_size,
bool* result);
void AllowFileSystem(const GURL& url, bool* result);
void AllowIndexedDB(const GURL& url,
const base::string16& name,
bool* result);
// Terminates the given worker, i.e. based on a UI action.
void TerminateWorker();
void AddFilter(SharedWorkerMessageFilter* filter, int route_id);
SharedWorkerInstance* instance() { return instance_.get(); }
WorkerDocumentSet* worker_document_set() const {
return worker_document_set_.get();
}
SharedWorkerMessageFilter* container_render_filter() const {
return container_render_filter_;
}
int process_id() const { return worker_process_id_; }
int worker_route_id() const { return worker_route_id_; }
bool load_failed() const { return load_failed_; }
bool closed() const { return closed_; }
private:
// Unique identifier for a worker client.
class FilterInfo {
public:
FilterInfo(SharedWorkerMessageFilter* filter, int route_id)
: filter_(filter), route_id_(route_id), message_port_id_(0) {}
SharedWorkerMessageFilter* filter() const { return filter_; }
int route_id() const { return route_id_; }
int message_port_id() const { return message_port_id_; }
void set_message_port_id(int id) { message_port_id_ = id; }
private:
SharedWorkerMessageFilter* filter_;
int route_id_;
int message_port_id_;
};
typedef std::list<FilterInfo> FilterList;
// Relays |message| to the SharedWorker. Takes care of parsing the message if
// it contains a message port and sending it a valid route id.
void RelayMessage(const IPC::Message& message,
SharedWorkerMessageFilter* incoming_filter);
// Return a vector of all the render process/render frame IDs.
std::vector<std::pair<int, int> > GetRenderFrameIDsForWorker();
void RemoveFilters(SharedWorkerMessageFilter* filter);
bool HasFilter(SharedWorkerMessageFilter* filter, int route_id) const;
void SetMessagePortID(SharedWorkerMessageFilter* filter,
int route_id,
int message_port_id);
scoped_ptr<SharedWorkerInstance> instance_;
scoped_refptr<WorkerDocumentSet> worker_document_set_;
FilterList filters_;
SharedWorkerMessageFilter* container_render_filter_;
int worker_process_id_;
int worker_route_id_;
bool load_failed_;
bool closed_;
const base::TimeTicks creation_time_;
DISALLOW_COPY_AND_ASSIGN(SharedWorkerHost);
};
} // namespace content
#endif // CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
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