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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.
#include "chromeos/geolocation/simple_geolocation_provider.h"
#include <algorithm>
#include <iterator>
#include "base/bind.h"
#include "chromeos/geolocation/geoposition.h"
#include "net/url_request/url_request_context_getter.h"
namespace chromeos {
namespace {
const char kDefaultGeolocationProviderUrl[] =
"https://www.googleapis.com/geolocation/v1/geolocate?";
} // namespace
SimpleGeolocationProvider::SimpleGeolocationProvider(
net::URLRequestContextGetter* url_context_getter,
const GURL& url)
: url_context_getter_(url_context_getter), url_(url) {
}
SimpleGeolocationProvider::~SimpleGeolocationProvider() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void SimpleGeolocationProvider::RequestGeolocation(
base::TimeDelta timeout,
SimpleGeolocationRequest::ResponseCallback callback) {
DCHECK(thread_checker_.CalledOnValidThread());
SimpleGeolocationRequest* request(
new SimpleGeolocationRequest(url_context_getter_.get(), url_, timeout));
requests_.push_back(request);
// SimpleGeolocationProvider owns all requests. It is safe to pass unretained
// "this" because destruction of SimpleGeolocationProvider cancels all
// requests.
SimpleGeolocationRequest::ResponseCallback callback_tmp(
base::Bind(&SimpleGeolocationProvider::OnGeolocationResponse,
base::Unretained(this),
request,
callback));
request->MakeRequest(callback_tmp);
}
// static
GURL SimpleGeolocationProvider::DefaultGeolocationProviderURL() {
return GURL(kDefaultGeolocationProviderUrl);
}
void SimpleGeolocationProvider::OnGeolocationResponse(
SimpleGeolocationRequest* request,
SimpleGeolocationRequest::ResponseCallback callback,
const Geoposition& geoposition,
bool server_error,
const base::TimeDelta elapsed) {
DCHECK(thread_checker_.CalledOnValidThread());
callback.Run(geoposition, server_error, elapsed);
ScopedVector<SimpleGeolocationRequest>::iterator position =
std::find(requests_.begin(), requests_.end(), request);
DCHECK(position != requests_.end());
if (position != requests_.end()) {
std::swap(*position, *requests_.rbegin());
requests_.resize(requests_.size() - 1);
}
}
} // namespace chromeos
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