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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.accessibility;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.annotation.Nullable;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.os.Bundle;
import android.os.UserHandle;
import android.provider.Settings;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;
import android.view.accessibility.AccessibilityManager;
import android.widget.Switch;
import com.android.internal.accessibility.AccessibilityShortcutController;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.settings.R;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settingslib.accessibility.AccessibilityUtils;
/**
* Settings page for accessibility shortcut
*/
public class AccessibilityShortcutPreferenceFragment extends ToggleFeaturePreferenceFragment
implements Indexable {
public static final String SHORTCUT_SERVICE_KEY = "accessibility_shortcut_service";
public static final String ON_LOCK_SCREEN_KEY = "accessibility_shortcut_on_lock_screen";
private Preference mServicePreference;
private SwitchPreference mOnLockScreenSwitchPreference;
@Override
public int getMetricsCategory() {
return MetricsEvent.ACCESSIBILITY_TOGGLE_GLOBAL_GESTURE;
}
@Override
public int getHelpResource() {
return R.string.help_url_accessibility_shortcut;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mServicePreference = findPreference(SHORTCUT_SERVICE_KEY);
mOnLockScreenSwitchPreference = (SwitchPreference) findPreference(ON_LOCK_SCREEN_KEY);
mOnLockScreenSwitchPreference.setOnPreferenceChangeListener((Preference p, Object o) -> {
Settings.Secure.putInt(getContentResolver(),
Settings.Secure.ACCESSIBILITY_SHORTCUT_ON_LOCK_SCREEN,
((Boolean) o) ? 1 : 0);
return true;
});
mFooterPreferenceMixin.createFooterPreference()
.setTitle(R.string.accessibility_shortcut_description);
}
@Override
public void onResume() {
super.onResume();
updatePreferences();
}
@Override
protected int getPreferenceScreenResId() {
return R.xml.accessibility_shortcut_settings;
}
@Override
protected void onInstallSwitchBarToggleSwitch() {
super.onInstallSwitchBarToggleSwitch();
mSwitchBar.addOnSwitchChangeListener((Switch switchView, boolean enabled) -> {
Context context = getContext();
if (enabled && !shortcutFeatureAvailable(context)) {
// If no service is configured, we'll disable the shortcut shortly. Give the
// user a chance to select a service. We'll update the preferences when we resume.
Settings.Secure.putInt(
getContentResolver(), Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, 1);
mServicePreference.setEnabled(true);
mServicePreference.performClick();
} else {
onPreferenceToggled(Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, enabled);
}
});
}
@Override
protected void onPreferenceToggled(String preferenceKey, boolean enabled) {
Settings.Secure.putInt(getContentResolver(), preferenceKey, enabled ? 1 : 0);
updatePreferences();
}
private void updatePreferences() {
ContentResolver cr = getContentResolver();
Context context = getContext();
mServicePreference.setSummary(getServiceName(context));
if (!shortcutFeatureAvailable(context)) {
// If no service is configured, make sure the overall shortcut is turned off
Settings.Secure.putInt(
getContentResolver(), Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, 0);
}
boolean isEnabled = Settings.Secure
.getInt(cr, Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, 1) == 1;
mSwitchBar.setChecked(isEnabled);
mOnLockScreenSwitchPreference.setChecked(Settings.Secure.getInt(
cr, Settings.Secure.ACCESSIBILITY_SHORTCUT_ON_LOCK_SCREEN, 0) == 1);
// Only enable changing the service and lock screen behavior if the shortcut is on
mServicePreference.setEnabled(mToggleSwitch.isChecked());
mOnLockScreenSwitchPreference.setEnabled(mToggleSwitch.isChecked());
}
/**
* Get the user-visible name of the service currently selected for the shortcut.
*
* @param context The current context
* @return The name of the service or a string saying that none is selected.
*/
public static CharSequence getServiceName(Context context) {
if (!shortcutFeatureAvailable(context)) {
return context.getString(R.string.accessibility_no_service_selected);
}
AccessibilityServiceInfo shortcutServiceInfo = getServiceInfo(context);
if (shortcutServiceInfo != null) {
return shortcutServiceInfo.getResolveInfo().loadLabel(context.getPackageManager());
}
return AccessibilityShortcutController.getFrameworkShortcutFeaturesMap()
.get(getShortcutComponent(context)).getLabel(context);
}
private static AccessibilityServiceInfo getServiceInfo(Context context) {
return AccessibilityManager.getInstance(context)
.getInstalledServiceInfoWithComponentName(getShortcutComponent(context));
}
private static boolean shortcutFeatureAvailable(Context context) {
ComponentName shortcutFeature = getShortcutComponent(context);
if (shortcutFeature == null) return false;
if (AccessibilityShortcutController.getFrameworkShortcutFeaturesMap()
.containsKey(shortcutFeature)) {
return true;
}
return getServiceInfo(context) != null;
}
private static @Nullable ComponentName getShortcutComponent(Context context) {
String componentNameString = AccessibilityUtils.getShortcutTargetServiceComponentNameString(
context, UserHandle.myUserId());
if (componentNameString == null) return null;
return ComponentName.unflattenFromString(componentNameString);
}
public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
// This fragment is for details of the shortcut. Only the shortcut itself needs
// to be indexed.
protected boolean isPageSearchEnabled(Context context) {
return false;
}
};
}
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