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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/app_mode/kiosk_session_plugin_handler.h"
#include <algorithm>
#include "base/functional/bind.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chrome/browser/chromeos/app_mode/kiosk_session_plugin_handler_delegate.h"
namespace chromeos {
namespace {
// Seconds to wait after a plugin hung is detected.
const int kHungWaitSeconds = 20;
} // namespace
KioskSessionPluginHandler::Observer::Observer(content::WebContents* contents,
KioskSessionPluginHandler* owner)
: content::WebContentsObserver(contents), owner_(owner) {}
KioskSessionPluginHandler::Observer::~Observer() = default;
std::set<int> KioskSessionPluginHandler::Observer::GetHungPluginsForTesting()
const {
return hung_plugins_;
}
void KioskSessionPluginHandler::Observer::OnHungWaitTimer() {
owner_->OnPluginHung(hung_plugins_);
}
void KioskSessionPluginHandler::Observer::PluginCrashed(
const base::FilePath& plugin_path,
base::ProcessId plugin_pid) {
if (!owner_->delegate_->ShouldHandlePlugin(plugin_path)) {
return;
}
owner_->OnPluginCrashed(plugin_path);
}
void KioskSessionPluginHandler::Observer::PluginHungStatusChanged(
int plugin_child_id,
const base::FilePath& plugin_path,
bool is_hung) {
if (!owner_->delegate_->ShouldHandlePlugin(plugin_path)) {
return;
}
if (is_hung) {
hung_plugins_.insert(plugin_child_id);
} else {
hung_plugins_.erase(plugin_child_id);
}
if (!hung_plugins_.empty()) {
if (!hung_wait_timer_.IsRunning()) {
hung_wait_timer_.Start(
FROM_HERE, base::Seconds(kHungWaitSeconds), this,
&KioskSessionPluginHandler::Observer::OnHungWaitTimer);
}
} else {
hung_wait_timer_.Stop();
}
}
void KioskSessionPluginHandler::Observer::WebContentsDestroyed() {
owner_->OnWebContentsDestroyed(this);
}
std::vector<KioskSessionPluginHandler::Observer*>
KioskSessionPluginHandler::GetWatchersForTesting() const {
std::vector<KioskSessionPluginHandler::Observer*> observers;
for (const auto& watcher : watchers_) {
observers.push_back(watcher.get());
}
return observers;
}
KioskSessionPluginHandler::KioskSessionPluginHandler(
KioskSessionPluginHandlerDelegate* delegate)
: delegate_(delegate) {}
KioskSessionPluginHandler::~KioskSessionPluginHandler() = default;
void KioskSessionPluginHandler::Observe(content::WebContents* contents) {
watchers_.push_back(std::make_unique<Observer>(contents, this));
}
void KioskSessionPluginHandler::OnPluginCrashed(
const base::FilePath& plugin_path) {
delegate_->OnPluginCrashed(plugin_path);
}
void KioskSessionPluginHandler::OnPluginHung(
const std::set<int>& hung_plugins) {
delegate_->OnPluginHung(hung_plugins);
}
void KioskSessionPluginHandler::OnWebContentsDestroyed(Observer* observer) {
for (auto it = watchers_.begin(); it != watchers_.end(); ++it) {
if (it->get() == observer) {
it->release();
watchers_.erase(it);
// Schedule the delete later after `observer`'s WebContentsDestroyed
// finishes.
base::SingleThreadTaskRunner::GetCurrentDefault()->DeleteSoon(FROM_HERE,
observer);
return;
}
}
}
} // namespace chromeos
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