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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 "third_party/blink/renderer/modules/geolocation/geo_notifier.h"
#include "base/metrics/histogram_functions.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_position_options.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/modules/geolocation/geolocation.h"
#include "third_party/blink/renderer/modules/geolocation/geolocation_position_error.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
namespace blink {
GeoNotifier::GeoNotifier(Geolocation* geolocation,
V8PositionCallback* success_callback,
V8PositionErrorCallback* error_callback,
const PositionOptions* options)
: geolocation_(geolocation),
success_callback_(success_callback),
error_callback_(error_callback),
options_(options),
timer_(MakeGarbageCollected<Timer>(
geolocation->GetWindow()->GetTaskRunner(TaskType::kMiscPlatformAPI),
this,
&GeoNotifier::TimerFired)),
use_cached_position_(false) {
DCHECK(geolocation_);
DCHECK(success_callback_);
base::UmaHistogramCustomTimes(
"Geolocation.Timeout",
base::TimeDelta::FromMilliseconds(options_->timeout()),
base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(10),
/* buckets = */ 20);
}
void GeoNotifier::Trace(Visitor* visitor) const {
visitor->Trace(geolocation_);
visitor->Trace(options_);
visitor->Trace(success_callback_);
visitor->Trace(error_callback_);
visitor->Trace(timer_);
visitor->Trace(fatal_error_);
}
void GeoNotifier::SetFatalError(GeolocationPositionError* error) {
// If a fatal error has already been set, stick with it. This makes sure that
// when permission is denied, this is the error reported, as required by the
// spec.
if (fatal_error_)
return;
fatal_error_ = error;
// An existing timer may not have a zero timeout.
timer_->Stop();
timer_->StartOneShot(base::TimeDelta(), FROM_HERE);
}
void GeoNotifier::SetUseCachedPosition() {
use_cached_position_ = true;
timer_->StartOneShot(base::TimeDelta(), FROM_HERE);
}
void GeoNotifier::RunSuccessCallback(Geoposition* position) {
success_callback_->InvokeAndReportException(nullptr, position);
}
void GeoNotifier::RunErrorCallback(GeolocationPositionError* error) {
if (error_callback_)
error_callback_->InvokeAndReportException(nullptr, error);
}
void GeoNotifier::StartTimer() {
timer_->StartOneShot(base::TimeDelta::FromMilliseconds(options_->timeout()),
FROM_HERE);
}
void GeoNotifier::StopTimer() {
timer_->Stop();
}
bool GeoNotifier::IsTimerActive() const {
return timer_->IsActive();
}
void GeoNotifier::Timer::Trace(Visitor* visitor) const {
visitor->Trace(notifier_);
}
void GeoNotifier::Timer::StartOneShot(base::TimeDelta interval,
const base::Location& caller) {
DCHECK(notifier_->geolocation_->DoesOwnNotifier(notifier_));
timer_.StartOneShot(interval, caller);
}
void GeoNotifier::Timer::Stop() {
DCHECK(notifier_->geolocation_->DoesOwnNotifier(notifier_));
timer_.Stop();
}
void GeoNotifier::TimerFired(TimerBase*) {
timer_->Stop();
// As the timer fires asynchronously, it's possible that the execution context
// has already gone. Check it first.
if (!geolocation_->GetExecutionContext()) {
return; // Do not invoke anything because of no execution context.
}
// TODO(yukishiino): Remove this check once we understand the cause.
// https://crbug.com/792604
CHECK(!geolocation_->GetExecutionContext()->IsContextDestroyed());
CHECK(geolocation_->DoesOwnNotifier(this));
// Test for fatal error first. This is required for the case where the
// LocalFrame is disconnected and requests are cancelled.
if (fatal_error_) {
RunErrorCallback(fatal_error_);
// This will cause this notifier to be deleted.
geolocation_->FatalErrorOccurred(this);
return;
}
if (use_cached_position_) {
// Clear the cached position flag in case this is a watch request, which
// will continue to run.
use_cached_position_ = false;
geolocation_->RequestUsesCachedPosition(this);
return;
}
if (error_callback_) {
error_callback_->InvokeAndReportException(
nullptr, MakeGarbageCollected<GeolocationPositionError>(
GeolocationPositionError::kTimeout, "Timeout expired"));
}
base::UmaHistogramCustomTimes(
"Geolocation.TimeoutExpired",
base::TimeDelta::FromMilliseconds(options_->timeout()),
base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(10),
/* buckets = */ 20);
geolocation_->RequestTimedOut(this);
}
} // namespace blink
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