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// Copyright (c) 2012 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.
#include "ppapi/proxy/ppb_network_monitor_private_proxy.h"
#include "ppapi/proxy/enter_proxy.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/proxy_lock.h"
#include "ppapi/thunk/ppb_network_monitor_private_api.h"
namespace ppapi {
namespace proxy {
class PPB_NetworkMonitor_Private_Proxy::NetworkMonitor
: public Resource,
public thunk::PPB_NetworkMonitor_Private_API,
public base::SupportsWeakPtr<
PPB_NetworkMonitor_Private_Proxy::NetworkMonitor> {
public:
NetworkMonitor(PP_Instance instance,
PPB_NetworkMonitor_Private_Proxy* proxy,
PPB_NetworkMonitor_Callback callback,
void* user_data)
: Resource(OBJECT_IS_PROXY, instance),
proxy_(proxy),
callback_(callback),
user_data_(user_data) {
}
virtual ~NetworkMonitor() {
proxy_->OnNetworkMonitorDeleted(this, pp_instance());
}
// Resource overrides.
virtual ppapi::thunk::PPB_NetworkMonitor_Private_API*
AsPPB_NetworkMonitor_Private_API() OVERRIDE {
return this;
}
// This is invoked when a network list is received for this monitor (either
// initially or on a change). It acquires the ProxyLock inside because
// ObserverListThreadSafe does not support Bind/Closure, otherwise we would
// wrap the call with a lock using RunWhileLocked.
void OnNetworkListReceivedLocks(
const scoped_refptr<NetworkListStorage>& list) {
ProxyAutoLock lock;
PP_Resource list_resource =
PPB_NetworkList_Private_Shared::Create(
OBJECT_IS_PROXY, pp_instance(), list);
CallWhileUnlocked(callback_, user_data_, list_resource);
}
private:
PPB_NetworkMonitor_Private_Proxy* proxy_;
PPB_NetworkMonitor_Callback callback_;
void* user_data_;
DISALLOW_COPY_AND_ASSIGN(NetworkMonitor);
};
PPB_NetworkMonitor_Private_Proxy::PPB_NetworkMonitor_Private_Proxy(
Dispatcher* dispatcher)
: InterfaceProxy(dispatcher),
monitors_(new ObserverListThreadSafe<NetworkMonitor>()),
monitors_count_(0) {
}
PPB_NetworkMonitor_Private_Proxy::~PPB_NetworkMonitor_Private_Proxy() {
monitors_->AssertEmpty();
}
// static
PP_Resource PPB_NetworkMonitor_Private_Proxy::CreateProxyResource(
PP_Instance instance,
PPB_NetworkMonitor_Callback callback,
void* user_data) {
// TODO(dmichael): Check that this thread has a valid message loop associated
// with it.
if (!callback)
return 0;
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
if (!dispatcher)
return 0;
PPB_NetworkMonitor_Private_Proxy* proxy =
static_cast<PPB_NetworkMonitor_Private_Proxy*>(
dispatcher->GetInterfaceProxy(kApiID));
if (!proxy)
return 0;
scoped_refptr<NetworkMonitor> result(
new NetworkMonitor(instance, proxy, callback, user_data));
proxy->monitors_->AddObserver(result.get());
proxy->monitors_count_++;
if (proxy->monitors_count_ == 1) {
// If that is the first network monitor then send Start message.
PluginGlobals::Get()->GetBrowserSender()->Send(
new PpapiHostMsg_PPBNetworkMonitor_Start(
dispatcher->plugin_dispatcher_id()));
// We could have received network list message after sending the
// previous Stop message. This list is stale now, so reset it
// here.
proxy->current_list_ = NULL;
} else if (proxy->current_list_.get()) {
MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
&NetworkMonitor::OnNetworkListReceivedLocks,
result->AsWeakPtr(), proxy->current_list_));
}
return result->GetReference();
}
bool PPB_NetworkMonitor_Private_Proxy::OnMessageReceived(
const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_NetworkMonitor_Private_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiMsg_PPBNetworkMonitor_NetworkList,
OnPluginMsgNetworkList)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PPB_NetworkMonitor_Private_Proxy::OnPluginMsgNetworkList(
uint32 plugin_dispatcher_id,
const ppapi::NetworkList& list) {
scoped_refptr<NetworkListStorage> list_storage(new NetworkListStorage(list));
current_list_ = list_storage;
monitors_->Notify(&NetworkMonitor::OnNetworkListReceivedLocks, list_storage);
}
void PPB_NetworkMonitor_Private_Proxy::OnNetworkMonitorDeleted(
NetworkMonitor* monitor,
PP_Instance instance) {
monitors_->RemoveObserver(monitor);
monitors_count_--;
if (monitors_count_ == 0) {
// Send Stop message if that was the last NetworkMonitor.
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
if (dispatcher) {
PluginGlobals::Get()->GetBrowserSender()->Send(
new PpapiHostMsg_PPBNetworkMonitor_Stop(
dispatcher->plugin_dispatcher_id()));
}
current_list_ = NULL;
}
}
} // namespace proxy
} // namespace ppapi
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