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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.applications.assist;
import android.content.ComponentName;
import android.content.Context;
import android.net.Uri;
import android.os.UserHandle;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.support.v7.preference.TwoStatePreference;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.AssistUtils;
import com.android.settings.core.PreferenceController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
import java.util.Arrays;
import java.util.List;
public class AssistFlashScreenPreferenceController extends PreferenceController
implements Preference.OnPreferenceChangeListener, LifecycleObserver, OnResume, OnPause {
private static final String KEY_FLASH = "flash";
private final AssistUtils mAssistUtils;
private final SettingObserver mSettingObserver;
private PreferenceScreen mScreen;
private Preference mPreference;
public AssistFlashScreenPreferenceController(Context context, Lifecycle lifecycle) {
super(context);
mAssistUtils = new AssistUtils(context);
mSettingObserver = new SettingObserver();
if (lifecycle != null) {
lifecycle.addObserver(this);
}
}
@Override
public boolean isAvailable() {
return getCurrentAssist() != null && allowDisablingAssistDisclosure();
}
@Override
public String getPreferenceKey() {
return KEY_FLASH;
}
@Override
public void displayPreference(PreferenceScreen screen) {
mScreen = screen;
mPreference = screen.findPreference(getPreferenceKey());
super.displayPreference(screen);
}
@Override
public void onResume() {
mSettingObserver.register(mContext.getContentResolver(), true);
updatePreference();
}
@Override
public void updateState(Preference preference) {
updatePreference();
}
@Override
public void onPause() {
mSettingObserver.register(mContext.getContentResolver(), false);
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
Settings.Secure.putInt(mContext.getContentResolver(),
Settings.Secure.ASSIST_DISCLOSURE_ENABLED,
(boolean) newValue ? 1 : 0);
return true;
}
private void updatePreference() {
if (mPreference == null || !(mPreference instanceof TwoStatePreference)) {
return;
}
if (isAvailable()) {
if (mScreen.findPreference(getPreferenceKey()) == null) {
// add it if it's not on scree
mScreen.addPreference(mPreference);
}
} else {
mScreen.removePreference(mPreference);
}
ComponentName assistant = getCurrentAssist();
boolean isContextChecked = AssistContextPreferenceController.isChecked(mContext);
mPreference.setEnabled(isContextChecked && isPreInstalledAssistant(assistant));
((TwoStatePreference) mPreference).setChecked(willShowFlash(assistant));
}
@VisibleForTesting
boolean willShowFlash(ComponentName assistant) {
return AssistUtils.shouldDisclose(mContext, assistant);
}
@VisibleForTesting
boolean isPreInstalledAssistant(ComponentName assistant) {
return AssistUtils.isPreinstalledAssistant(mContext, assistant);
}
@VisibleForTesting
boolean allowDisablingAssistDisclosure() {
return AssistUtils.allowDisablingAssistDisclosure(mContext);
}
private ComponentName getCurrentAssist() {
return mAssistUtils.getAssistComponentForUser(UserHandle.myUserId());
}
class SettingObserver extends AssistSettingObserver {
private final Uri URI =
Settings.Secure.getUriFor(Settings.Secure.ASSIST_DISCLOSURE_ENABLED);
private final Uri CONTEXT_URI =
Settings.Secure.getUriFor(Settings.Secure.ASSIST_STRUCTURE_ENABLED);
@Override
protected List<Uri> getSettingUris() {
return Arrays.asList(URI, CONTEXT_URI);
}
@Override
public void onSettingChange() {
updatePreference();
}
}
}
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