097472fc4a
Fix for Select-To-Speak, Talkback, and Magify app. Bug: 147793421 Bug: 147709365 Bug: 147708796 Test: Manual test Change-Id: Id7b62c96df869cbd35f2ffbb442b0a4eb7e0393d
280 lines
10 KiB
Java
280 lines
10 KiB
Java
/*
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* Copyright (C) 2013 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.content.ComponentName;
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import android.content.ContentResolver;
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import android.content.Intent;
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import android.content.pm.ResolveInfo;
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import android.graphics.drawable.Drawable;
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import android.net.Uri;
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import android.os.Bundle;
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import android.text.Html;
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import android.text.TextUtils;
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import android.view.View;
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import android.widget.ImageView;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import com.android.settings.R;
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import com.android.settings.SettingsActivity;
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import com.android.settings.SettingsPreferenceFragment;
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import com.android.settings.widget.SwitchBar;
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import com.android.settings.widget.ToggleSwitch;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.StringJoiner;
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public abstract class ToggleFeaturePreferenceFragment extends SettingsPreferenceFragment {
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protected SwitchBar mSwitchBar;
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protected ToggleSwitch mToggleSwitch;
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protected String mPreferenceKey;
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protected CharSequence mSettingsTitle;
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protected Intent mSettingsIntent;
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protected ComponentName mComponentName;
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protected Uri mImageUri;
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protected CharSequence mStaticDescription;
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protected CharSequence mHtmlDescription;
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private static final String ANCHOR_TAG = "a";
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private static final String DRAWABLE_FOLDER = "drawable";
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// For html description of accessibility service, third party developer must follow the rule,
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// such as <img src="R.drawable.fileName"/>, a11y settings will get third party resources
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// by this.
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private static final String IMG_PREFIX = "R.drawable.";
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private ImageView mImageGetterCacheView;
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private final Html.ImageGetter mImageGetter = (String str) -> {
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if (str != null && str.startsWith(IMG_PREFIX)) {
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final String fileName = str.substring(IMG_PREFIX.length());
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return getDrawableFromUri(Uri.parse(
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ContentResolver.SCHEME_ANDROID_RESOURCE + "://"
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+ mComponentName.getPackageName() + "/" + DRAWABLE_FOLDER + "/"
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+ fileName));
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}
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return null;
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};
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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final int resId = getPreferenceScreenResId();
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if (resId <= 0) {
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PreferenceScreen preferenceScreen = getPreferenceManager().createPreferenceScreen(
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getActivity());
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setPreferenceScreen(preferenceScreen);
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}
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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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SettingsActivity activity = (SettingsActivity) getActivity();
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mSwitchBar = activity.getSwitchBar();
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mToggleSwitch = mSwitchBar.getSwitch();
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onProcessArguments(getArguments());
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updateSwitchBarText(mSwitchBar);
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PreferenceScreen preferenceScreen = getPreferenceScreen();
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// Show the "Settings" menu as if it were a preference screen
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if (mSettingsTitle != null && mSettingsIntent != null) {
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Preference settingsPref = new Preference(preferenceScreen.getContext());
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settingsPref.setTitle(mSettingsTitle);
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settingsPref.setIconSpaceReserved(true);
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settingsPref.setIntent(mSettingsIntent);
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preferenceScreen.addPreference(settingsPref);
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}
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if (mImageUri != null) {
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final AnimatedImagePreference animatedImagePreference = new AnimatedImagePreference(
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preferenceScreen.getContext());
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animatedImagePreference.setImageUri(mImageUri);
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animatedImagePreference.setDividerAllowedAbove(true);
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preferenceScreen.addPreference(animatedImagePreference);
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}
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if (mStaticDescription != null) {
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final StaticTextPreference staticTextPreference = new StaticTextPreference(
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preferenceScreen.getContext());
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staticTextPreference.setSelectable(/* selectable= */ false);
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staticTextPreference.setSummary(mStaticDescription);
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preferenceScreen.addPreference(staticTextPreference);
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}
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if (mHtmlDescription != null) {
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// For accessibility service, avoid malicious links made by third party developer
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final List<String> unsupportedTagList = new ArrayList<>();
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unsupportedTagList.add(ANCHOR_TAG);
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final HtmlTextPreference htmlTextPreference = new HtmlTextPreference(
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preferenceScreen.getContext());
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htmlTextPreference.setSelectable(/* selectable= */ false);
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htmlTextPreference.setSummary(mHtmlDescription);
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htmlTextPreference.setImageGetter(mImageGetter);
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htmlTextPreference.setUnsupportedTagList(unsupportedTagList);
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htmlTextPreference.setDividerAllowedAbove(true);
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preferenceScreen.addPreference(htmlTextPreference);
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}
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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installActionBarToggleSwitch();
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}
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@Override
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public void onDestroyView() {
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super.onDestroyView();
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removeActionBarToggleSwitch();
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}
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protected void updateSwitchBarText(SwitchBar switchBar) {
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// Implement this to provide meaningful text in switch bar
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switchBar.setSwitchBarText(R.string.accessibility_service_master_switch_title,
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R.string.accessibility_service_master_switch_title);
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}
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protected abstract void onPreferenceToggled(String preferenceKey, boolean enabled);
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protected void onInstallSwitchBarToggleSwitch() {
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// Implement this to set a checked listener.
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}
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protected void onRemoveSwitchBarToggleSwitch() {
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// Implement this to reset a checked listener.
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}
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private void installActionBarToggleSwitch() {
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mSwitchBar.show();
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onInstallSwitchBarToggleSwitch();
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}
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private void removeActionBarToggleSwitch() {
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mToggleSwitch.setOnBeforeCheckedChangeListener(null);
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onRemoveSwitchBarToggleSwitch();
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mSwitchBar.hide();
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}
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public void setTitle(String title) {
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getActivity().setTitle(title);
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}
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protected void onProcessArguments(Bundle arguments) {
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// Key.
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mPreferenceKey = arguments.getString(AccessibilitySettings.EXTRA_PREFERENCE_KEY);
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// Enabled.
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if (arguments.containsKey(AccessibilitySettings.EXTRA_CHECKED)) {
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final boolean enabled = arguments.getBoolean(AccessibilitySettings.EXTRA_CHECKED);
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mSwitchBar.setCheckedInternal(enabled);
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}
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// Title.
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if (arguments.containsKey(AccessibilitySettings.EXTRA_RESOLVE_INFO)) {
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ResolveInfo info = arguments.getParcelable(AccessibilitySettings.EXTRA_RESOLVE_INFO);
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getActivity().setTitle(info.loadLabel(getPackageManager()).toString());
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} else if (arguments.containsKey(AccessibilitySettings.EXTRA_TITLE)) {
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setTitle(arguments.getString(AccessibilitySettings.EXTRA_TITLE));
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}
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// Summary.
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if (arguments.containsKey(AccessibilitySettings.EXTRA_SUMMARY_RES)) {
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final int summary = arguments.getInt(AccessibilitySettings.EXTRA_SUMMARY_RES);
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mStaticDescription = getText(summary);
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} else if (arguments.containsKey(AccessibilitySettings.EXTRA_SUMMARY)) {
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final CharSequence summary = arguments.getCharSequence(
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AccessibilitySettings.EXTRA_SUMMARY);
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mStaticDescription = summary;
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}
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}
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private Drawable getDrawableFromUri(Uri imageUri) {
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if (mImageGetterCacheView == null) {
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mImageGetterCacheView = new ImageView(getContext());
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}
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mImageGetterCacheView.setAdjustViewBounds(true);
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mImageGetterCacheView.setImageURI(imageUri);
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final Drawable drawable = mImageGetterCacheView.getDrawable().mutate();
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if (drawable != null) {
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drawable.setBounds(/* left= */0, /* top= */0, drawable.getIntrinsicWidth(),
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drawable.getIntrinsicHeight());
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}
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mImageGetterCacheView.setImageURI(null);
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mImageGetterCacheView.setImageDrawable(null);
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return drawable;
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}
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static final class AccessibilityUserShortcutType {
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private static final char COMPONENT_NAME_SEPARATOR = ':';
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private static final TextUtils.SimpleStringSplitter sStringColonSplitter =
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new TextUtils.SimpleStringSplitter(COMPONENT_NAME_SEPARATOR);
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private String mComponentName;
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private int mUserShortcutType;
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AccessibilityUserShortcutType(String componentName, int userShortcutType) {
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this.mComponentName = componentName;
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this.mUserShortcutType = userShortcutType;
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}
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AccessibilityUserShortcutType(String flattenedString) {
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sStringColonSplitter.setString(flattenedString);
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if (sStringColonSplitter.hasNext()) {
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this.mComponentName = sStringColonSplitter.next();
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this.mUserShortcutType = Integer.parseInt(sStringColonSplitter.next());
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}
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}
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String getComponentName() {
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return mComponentName;
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}
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void setComponentName(String componentName) {
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this.mComponentName = componentName;
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}
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int getUserShortcutType() {
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return mUserShortcutType;
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}
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void setUserShortcutType(int userShortcutType) {
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this.mUserShortcutType = userShortcutType;
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}
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String flattenToString() {
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final StringJoiner joiner = new StringJoiner(String.valueOf(COMPONENT_NAME_SEPARATOR));
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joiner.add(mComponentName);
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joiner.add(String.valueOf(mUserShortcutType));
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return joiner.toString();
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}
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}
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}
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