53a8cc0326
When both the camera flash and screen flash toggles are turned off, tapping on the preview button will have no effect and may confuse users. To avoid this, the appearance of the preview button should be updated to clearly indicated that its current state is disabled. This wil help users better understand the situation and prevent confusion. Bug: 276494146 Test: checks the UI manually Test: make RunSettingsRoboTests ROBOTEST_FILTER=FlashNotificationsPreviewPreferenceTest Change-Id: I55b11188fde6e551921a9b0f7c89daa20a8b766b
116 lines
4.2 KiB
Java
116 lines
4.2 KiB
Java
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.accessibility;
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import static com.android.settings.accessibility.FlashNotificationsUtil.ACTION_FLASH_NOTIFICATION_START_PREVIEW;
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import static com.android.settings.accessibility.FlashNotificationsUtil.EXTRA_FLASH_NOTIFICATION_PREVIEW_TYPE;
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import static com.android.settings.accessibility.FlashNotificationsUtil.TYPE_SHORT_PREVIEW;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.Intent;
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import android.database.ContentObserver;
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import android.net.Uri;
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import android.os.Handler;
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import android.os.Looper;
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import android.provider.Settings;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.VisibleForTesting;
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import androidx.lifecycle.Lifecycle;
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import androidx.lifecycle.LifecycleEventObserver;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import com.android.settings.core.BasePreferenceController;
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/**
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* Controller for flash notifications preview.
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*/
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public class FlashNotificationsPreviewPreferenceController extends
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BasePreferenceController implements LifecycleEventObserver {
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private Preference mPreference;
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private final ContentResolver mContentResolver;
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@VisibleForTesting
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final ContentObserver mContentObserver = new ContentObserver(
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new Handler(Looper.getMainLooper())) {
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@Override
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public void onChange(boolean selfChange, @Nullable Uri uri) {
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updateState(mPreference);
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}
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};
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public FlashNotificationsPreviewPreferenceController(Context context, String preferenceKey) {
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super(context, preferenceKey);
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mContentResolver = context.getContentResolver();
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}
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@Override
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public int getAvailabilityStatus() {
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return AVAILABLE;
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mPreference = screen.findPreference(getPreferenceKey());
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updateState(mPreference);
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}
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@Override
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public boolean handlePreferenceTreeClick(Preference preference) {
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if (getPreferenceKey().equals(preference.getKey())) {
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Intent intent = new Intent(ACTION_FLASH_NOTIFICATION_START_PREVIEW);
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intent.putExtra(EXTRA_FLASH_NOTIFICATION_PREVIEW_TYPE, TYPE_SHORT_PREVIEW);
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mContext.sendBroadcast(intent);
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return true;
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}
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return super.handlePreferenceTreeClick(preference);
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}
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@Override
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public void onStateChanged(@NonNull LifecycleOwner lifecycleOwner,
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@NonNull Lifecycle.Event event) {
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if (event == Lifecycle.Event.ON_RESUME) {
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mContentResolver.registerContentObserver(
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Settings.System.getUriFor(Settings.System.CAMERA_FLASH_NOTIFICATION),
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/* notifyForDescendants= */ false, mContentObserver);
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mContentResolver.registerContentObserver(
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Settings.System.getUriFor(Settings.System.SCREEN_FLASH_NOTIFICATION),
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/* notifyForDescendants= */ false, mContentObserver);
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} else if (event == Lifecycle.Event.ON_PAUSE) {
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mContentResolver.unregisterContentObserver(mContentObserver);
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}
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}
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@Override
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public void updateState(Preference preference) {
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super.updateState(preference);
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if (preference == null) {
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return;
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}
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preference.setEnabled(FlashNotificationsUtil.getFlashNotificationsState(mContext)
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!= FlashNotificationsUtil.State.OFF);
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}
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}
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