875d3b2471
Devices without a software-rendered navigation bar will be unable to
use "Magnify with button" as no accessibility button trigger for
magnification can be shown.
In this case, we hide the setting by preventing
MagnificationPreferenceFragment from showing the list of mag
modes, instead launching directly into the PreferenceFragment for
"Magnify with triple-tap"
Bug: 36862906
Test: Manual - Configured marlin to disable the navigation bar and
verified behavior in SUW and Settings
Change-Id: Ie614ec292d7779044274b7c79eaed1df080c0fd1
219 lines
10 KiB
Java
219 lines
10 KiB
Java
/*
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* Copyright (C) 2017 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 android.accessibilityservice.AccessibilityServiceInfo;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.res.Resources;
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import android.os.Bundle;
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import android.provider.SearchIndexableResource;
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import android.provider.Settings;
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import android.support.v7.preference.Preference;
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import android.text.TextUtils;
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import android.view.View;
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import android.view.accessibility.AccessibilityManager;
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import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
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import com.android.settings.R;
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import com.android.settings.SettingsPreferenceFragment;
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import com.android.settings.search.BaseSearchIndexProvider;
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import com.android.settings.search.Indexable;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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public final class MagnificationPreferenceFragment extends SettingsPreferenceFragment implements
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Indexable {
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// Settings App preference keys
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private static final String MAGNIFICATION_GESTURES_PREFERENCE_SCREEN_KEY =
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"screen_magnification_gestures_preference_screen";
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private static final String MAGNIFICATION_NAVBAR_PREFERENCE_SCREEN_KEY =
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"screen_magnification_navbar_preference_screen";
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// Pseudo ComponentName used to represent navbar magnification in Settings.Secure.
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private static final String MAGNIFICATION_COMPONENT_ID =
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"com.android.server.accessibility.MagnificationController";
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private Preference mMagnificationGesturesPreference;
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private Preference mMagnificationNavbarPreference;
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private boolean mLaunchedFromSuw = false;
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@Override
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public void onCreatePreferences(Bundle bundle, String s) {
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addPreferencesFromResource(R.xml.accessibility_magnification_settings);
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mMagnificationGesturesPreference = findPreference(
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MAGNIFICATION_GESTURES_PREFERENCE_SCREEN_KEY);
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mMagnificationNavbarPreference = findPreference(MAGNIFICATION_NAVBAR_PREFERENCE_SCREEN_KEY);
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}
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@Override
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public void onViewCreated(View view, Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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final Bundle args = getArguments();
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if ((args != null) && args.containsKey(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW)) {
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mLaunchedFromSuw = args.getBoolean(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW);
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}
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}
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@Override
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public void onResume() {
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super.onResume();
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getActivity().setTitle(R.string.accessibility_screen_magnification_title);
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updateFeatureSummary(Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED,
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mMagnificationGesturesPreference);
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updateFeatureSummary(Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED,
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mMagnificationNavbarPreference);
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}
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@Override
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public int getMetricsCategory() {
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return MetricsEvent.ACCESSIBILITY_SCREEN_MAGNIFICATION_SETTINGS;
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}
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@Override
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public boolean onPreferenceTreeClick(Preference preference) {
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if (mLaunchedFromSuw) {
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// If invoked from SUW, redirect to fragment instrumented for Vision Settings metrics
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preference.setFragment(
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ToggleScreenMagnificationPreferenceFragmentForSetupWizard.class.getName());
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}
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if (mMagnificationGesturesPreference == preference) {
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handleMagnificationGesturesPreferenceScreenClick();
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super.onPreferenceTreeClick(mMagnificationGesturesPreference);
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return true;
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} else if (mMagnificationNavbarPreference == preference) {
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handleMagnificationNavbarPreferenceScreenClick();
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super.onPreferenceTreeClick(mMagnificationNavbarPreference);
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return true;
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}
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return super.onPreferenceTreeClick(preference);
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}
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private void updateFeatureSummary(String prefKey, Preference pref) {
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if (!mLaunchedFromSuw) {
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final boolean enabled = Settings.Secure.getInt(getContentResolver(), prefKey, 0) == 1;
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pref.setSummary(enabled ? R.string.accessibility_feature_state_on
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: R.string.accessibility_feature_state_off);
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} else {
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if (Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED.equals(prefKey)) {
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pref.setSummary(R.string.accessibility_screen_magnification_short_summary);
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} else if (Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED.equals(
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prefKey)) {
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pref.setSummary(R.string.accessibility_screen_magnification_navbar_short_summary);
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}
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}
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}
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private void handleMagnificationGesturesPreferenceScreenClick() {
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Bundle extras = mMagnificationGesturesPreference.getExtras();
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populateMagnificationGesturesPreferenceExtras(extras, getContext());
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extras.putBoolean(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW, mLaunchedFromSuw);
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}
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private void handleMagnificationNavbarPreferenceScreenClick() {
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Bundle extras = mMagnificationNavbarPreference.getExtras();
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extras.putString(AccessibilitySettings.EXTRA_PREFERENCE_KEY,
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Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED);
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extras.putString(AccessibilitySettings.EXTRA_TITLE, getString(
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R.string.accessibility_screen_magnification_navbar_title));
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extras.putCharSequence(AccessibilitySettings.EXTRA_SUMMARY,
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getActivity().getResources().getText(
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R.string.accessibility_screen_magnification_navbar_summary));
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extras.putBoolean(AccessibilitySettings.EXTRA_CHECKED,
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Settings.Secure.getInt(getContentResolver(),
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Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0)
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== 1);
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extras.putBoolean(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW, mLaunchedFromSuw);
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}
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static CharSequence getConfigurationWarningStringForSecureSettingsKey(String key,
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Context context) {
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if (!Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED.equals(key)) {
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return null;
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}
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if (Settings.Secure.getInt(context.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0) == 0) {
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return null;
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}
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final AccessibilityManager am = (AccessibilityManager) context.getSystemService(
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Context.ACCESSIBILITY_SERVICE);
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final String assignedId = Settings.Secure.getString(context.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_BUTTON_TARGET_COMPONENT);
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if (!TextUtils.isEmpty(assignedId) && !MAGNIFICATION_COMPONENT_ID.equals(assignedId)) {
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final ComponentName assignedComponentName = ComponentName.unflattenFromString(
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assignedId);
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final List<AccessibilityServiceInfo> activeServices =
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am.getEnabledAccessibilityServiceList(
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AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
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final int serviceCount = activeServices.size();
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for (int i = 0; i < serviceCount; i++) {
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final AccessibilityServiceInfo info = activeServices.get(i);
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if (info.getComponentName().equals(assignedComponentName)) {
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final CharSequence assignedServiceName = info.getResolveInfo().loadLabel(
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context.getPackageManager());
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return context.getString(
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R.string.accessibility_screen_magnification_navbar_configuration_warning,
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assignedServiceName);
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}
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}
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}
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return null;
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}
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static void populateMagnificationGesturesPreferenceExtras(Bundle extras, Context context) {
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extras.putString(AccessibilitySettings.EXTRA_PREFERENCE_KEY,
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Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED);
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extras.putString(AccessibilitySettings.EXTRA_TITLE, context.getString(
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R.string.accessibility_screen_magnification_gestures_title));
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extras.putCharSequence(AccessibilitySettings.EXTRA_SUMMARY, context.getResources().getText(
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R.string.accessibility_screen_magnification_summary));
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extras.putBoolean(AccessibilitySettings.EXTRA_CHECKED,
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Settings.Secure.getInt(context.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, 0) == 1);
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extras.putInt(AccessibilitySettings.EXTRA_VIDEO_RAW_RESOURCE_ID,
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R.raw.accessibility_screen_magnification);
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}
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/**
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* @return {@code true} if this fragment should be shown, {@code false} otherwise. This
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* fragment is shown in the case that more than one magnification mode is available.
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*/
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static boolean isApplicable(Resources res) {
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return res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);
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}
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public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
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new BaseSearchIndexProvider() {
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@Override
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public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
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boolean enabled) {
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if (isApplicable(context.getResources())) {
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final SearchIndexableResource sir = new SearchIndexableResource(context);
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sir.xmlResId = R.xml.accessibility_magnification_settings;
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return Arrays.asList(sir);
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} else {
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return Collections.emptyList();
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}
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}
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};
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}
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