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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 "chrome/browser/extensions/api/api_resource_event_notifier.h"
#include "base/bind.h"
#include "base/json/json_writer.h"
#include "base/values.h"
#include "chrome/browser/extensions/extension_event_router.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace events {
const char kExperimentalSocketOnEvent[] = "experimental.socket.onEvent";
const char kExperimentalUsbOnEvent[] = "experimental.usb.onEvent";
};
namespace extensions {
const char kEventTypeKey[] = "type";
const char kEventTypeConnectComplete[] = "connectComplete";
const char kEventTypeDataRead[] = "dataRead";
const char kEventTypeWriteComplete[] = "writeComplete";
const char kEventTypeTransferComplete[] = "transferComplete";
const char kSrcIdKey[] = "srcId";
const char kIsFinalEventKey[] = "isFinalEvent";
const char kResultCodeKey[] = "resultCode";
const char kDataKey[] = "data";
const char kAddressKey[] = "address";
const char kPortKey[] = "port";
const char kErrorKey[] = "error";
APIResourceEventNotifier::APIResourceEventNotifier(
ExtensionEventRouter* router,
Profile* profile,
const std::string& src_extension_id,
int src_id,
const GURL& src_url)
: router_(router),
profile_(profile),
src_extension_id_(src_extension_id),
src_id_(src_id),
src_url_(src_url) {
}
void APIResourceEventNotifier::OnConnectComplete(int result_code) {
SendEventWithResultCode(events::kExperimentalSocketOnEvent,
API_RESOURCE_EVENT_CONNECT_COMPLETE, result_code);
}
void APIResourceEventNotifier::OnDataRead(int result_code,
base::ListValue* data,
const std::string& address,
int port) {
// Do we have a destination for this event? There will be one if a source id
// was injected by the request handler for the resource's create method in
// schema_generated_bindings.js, which will in turn be the case if the caller
// of the create method provided an onEvent closure.
if (src_id_ < 0) {
delete data;
return;
}
DictionaryValue* event = CreateAPIResourceEvent(
API_RESOURCE_EVENT_DATA_READ);
event->SetInteger(kResultCodeKey, result_code);
event->Set(kDataKey, data);
event->SetString(kAddressKey, address);
event->SetInteger(kPortKey, port);
DispatchEvent(events::kExperimentalSocketOnEvent, event);
}
void APIResourceEventNotifier::OnWriteComplete(int result_code) {
SendEventWithResultCode(events::kExperimentalSocketOnEvent,
API_RESOURCE_EVENT_WRITE_COMPLETE, result_code);
}
void APIResourceEventNotifier::OnTransferComplete(UsbTransferStatus status,
const std::string& error,
base::BinaryValue* data) {
if (src_id_ < 0) {
delete data;
return;
}
DictionaryValue* event = CreateAPIResourceEvent(
API_RESOURCE_EVENT_TRANSFER_COMPLETE);
event->SetInteger(kResultCodeKey, status);
event->Set(kDataKey, data);
if (!error.empty()) {
event->SetString(kErrorKey, error);
}
DispatchEvent(events::kExperimentalUsbOnEvent, event);
}
// static
std::string APIResourceEventNotifier::APIResourceEventTypeToString(
APIResourceEventType event_type) {
switch (event_type) {
case API_RESOURCE_EVENT_CONNECT_COMPLETE:
return kEventTypeConnectComplete;
case API_RESOURCE_EVENT_DATA_READ:
return kEventTypeDataRead;
case API_RESOURCE_EVENT_WRITE_COMPLETE:
return kEventTypeWriteComplete;
case API_RESOURCE_EVENT_TRANSFER_COMPLETE:
return kEventTypeTransferComplete;
}
NOTREACHED();
return std::string();
}
APIResourceEventNotifier::~APIResourceEventNotifier() {}
void APIResourceEventNotifier::DispatchEvent(const std::string &extension,
DictionaryValue* event) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&APIResourceEventNotifier::DispatchEventOnUIThread, this, extension,
event));
}
void APIResourceEventNotifier::DispatchEventOnUIThread(
const std::string &extension, DictionaryValue* event) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
ListValue args;
args.Set(0, event);
router_->DispatchEventToExtension(src_extension_id_, extension, args,
profile_, src_url_);
}
DictionaryValue* APIResourceEventNotifier::CreateAPIResourceEvent(
APIResourceEventType event_type) {
DictionaryValue* event = new DictionaryValue();
event->SetString(kEventTypeKey, APIResourceEventTypeToString(event_type));
event->SetInteger(kSrcIdKey, src_id_);
// TODO(miket): Signal that it's OK to clean up onEvent listeners. This is
// the framework we'll use, but we need to start using it.
event->SetBoolean(kIsFinalEventKey, false);
// The caller owns the created event, which typically is then given to a
// ListValue to dispose of.
return event;
}
void APIResourceEventNotifier::SendEventWithResultCode(
const std::string &extension,
APIResourceEventType event_type,
int result_code) {
if (src_id_ < 0)
return;
DictionaryValue* event = CreateAPIResourceEvent(event_type);
event->SetInteger(kResultCodeKey, result_code);
DispatchEvent(extension, event);
}
} // namespace extensions
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