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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/json/json_writer.h"
#include "chrome/browser/extensions/extension_event_router.h"
#include "chrome/browser/profiles/profile.h"
namespace events {
// TODO(miket): This should be generic, but at the moment only socket sends
// onEvent events. We'll fix this when serial becomes nonblocking.
const char kOnAPIResourceEvent[] = "experimental.socket.onEvent";
};
namespace extensions {
const char kEventTypeKey[] = "type";
const char kEventTypeConnectComplete[] = "connectComplete";
const char kEventTypeDataRead[] = "dataRead";
const char kEventTypeWriteComplete[] = "writeComplete";
const char kSrcIdKey[] = "srcId";
const char kIsFinalEventKey[] = "isFinalEvent";
const char kResultCodeKey[] = "resultCode";
const char kDataKey[] = "data";
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) {}
APIResourceEventNotifier::~APIResourceEventNotifier() {}
void APIResourceEventNotifier::OnConnectComplete(int result_code) {
SendEventWithResultCode(API_RESOURCE_EVENT_CONNECT_COMPLETE, result_code);
}
void APIResourceEventNotifier::OnDataRead(int result_code,
const std::string& data) {
// 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)
return;
DictionaryValue* event = CreateAPIResourceEvent(
API_RESOURCE_EVENT_DATA_READ);
event->SetInteger(kResultCodeKey, result_code);
event->SetString(kDataKey, data);
DispatchEvent(event);
}
void APIResourceEventNotifier::OnWriteComplete(int result_code) {
SendEventWithResultCode(API_RESOURCE_EVENT_WRITE_COMPLETE, result_code);
}
void APIResourceEventNotifier::SendEventWithResultCode(
APIResourceEventType event_type,
int result_code) {
if (src_id_ < 0)
return;
DictionaryValue* event = CreateAPIResourceEvent(event_type);
event->SetInteger(kResultCodeKey, result_code);
DispatchEvent(event);
}
void APIResourceEventNotifier::DispatchEvent(DictionaryValue* event) {
ListValue args;
args.Set(0, event);
std::string json_args;
base::JSONWriter::Write(&args, &json_args);
router_->DispatchEventToExtension(src_extension_id_,
events::kOnAPIResourceEvent,
json_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;
}
// 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;
}
NOTREACHED();
return std::string();
}
} // namespace extensions
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