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// Copyright 2013 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 "apps/app_launcher.h"
#include "apps/pref_names.h"
#include "base/command_line.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/threading/sequenced_worker_pool.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/host_desktop.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/browser/browser_thread.h"
#if defined(OS_WIN)
#include "chrome/installer/launcher_support/chrome_launcher_support.h"
#include "chrome/installer/util/browser_distribution.h"
#endif
namespace apps {
namespace {
enum AppLauncherState {
APP_LAUNCHER_UNKNOWN,
APP_LAUNCHER_ENABLED,
APP_LAUNCHER_DISABLED,
};
AppLauncherState SynchronousAppLauncherChecks() {
#if defined(USE_ASH) && !defined(OS_WIN)
return APP_LAUNCHER_ENABLED;
#elif !defined(OS_WIN)
return APP_LAUNCHER_DISABLED;
#else
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kShowAppListShortcut)) {
return APP_LAUNCHER_ENABLED;
}
#if defined(USE_ASH)
if (chrome::GetActiveDesktop() == chrome::HOST_DESKTOP_TYPE_ASH)
return APP_LAUNCHER_ENABLED;
#endif
if (!BrowserDistribution::GetDistribution()->AppHostIsSupported())
return APP_LAUNCHER_DISABLED;
return APP_LAUNCHER_UNKNOWN;
#endif
}
#if defined(OS_WIN)
void UpdatePrefAndCallCallbackOnUI(
bool result,
const OnAppLauncherEnabledCompleted& completion_callback) {
PrefService* prefs = g_browser_process->local_state();
prefs->SetBoolean(prefs::kAppLauncherIsEnabled, result);
completion_callback.Run(result);
}
void IsAppLauncherInstalledOnBlockingPool(
const OnAppLauncherEnabledCompleted& completion_callback) {
DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
bool result = chrome_launcher_support::IsAppLauncherPresent();
content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
base::Bind(UpdatePrefAndCallCallbackOnUI, result, completion_callback));
}
#endif
} // namespace
bool MaybeIsAppLauncherEnabled() {
return SynchronousAppLauncherChecks() == APP_LAUNCHER_ENABLED;
}
void GetIsAppLauncherEnabled(
const OnAppLauncherEnabledCompleted& completion_callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
AppLauncherState state = SynchronousAppLauncherChecks();
if (state != APP_LAUNCHER_UNKNOWN) {
bool is_enabled = state == APP_LAUNCHER_ENABLED;
PrefService* prefs = g_browser_process->local_state();
prefs->SetBoolean(prefs::kAppLauncherIsEnabled, is_enabled);
completion_callback.Run(is_enabled);
return;
}
#if defined(OS_WIN)
content::BrowserThread::PostBlockingPoolTask(
FROM_HERE,
base::Bind(&IsAppLauncherInstalledOnBlockingPool,
completion_callback));
#else
// SynchronousAppLauncherChecks() never returns APP_LAUNCHER_UNKNOWN on
// !defined(OS_WIN), so this path is never reached.
NOTREACHED();
#endif
}
bool WasAppLauncherEnabled() {
PrefService* prefs = g_browser_process->local_state();
// In some tests, the prefs aren't initialised.
if (!prefs)
return SynchronousAppLauncherChecks() == APP_LAUNCHER_ENABLED;
return prefs->GetBoolean(prefs::kAppLauncherIsEnabled);
}
} // namespace apps
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