| /* |
| * Copyright (C) 2014 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.fuelgauge.batterysaver; |
| |
| import android.app.settings.SettingsEnums; |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.provider.SearchIndexableResource; |
| import android.text.Annotation; |
| import android.text.Spannable; |
| import android.text.SpannableStringBuilder; |
| import android.text.Spanned; |
| import android.text.TextPaint; |
| import android.text.TextUtils; |
| import android.text.style.URLSpan; |
| import android.view.View; |
| |
| import androidx.annotation.VisibleForTesting; |
| import androidx.fragment.app.Fragment; |
| |
| import com.android.settings.R; |
| import com.android.settings.dashboard.DashboardFragment; |
| import com.android.settings.search.BaseSearchIndexProvider; |
| import com.android.settings.search.Indexable; |
| import com.android.settingslib.HelpUtils; |
| import com.android.settingslib.search.SearchIndexable; |
| import com.android.settingslib.widget.FooterPreference; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Battery saver settings page |
| */ |
| @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC) |
| public class BatterySaverSettings extends DashboardFragment { |
| private static final String TAG = "BatterySaverSettings"; |
| public static final String KEY_FOOTER_PREFERENCE = "footer_preference"; |
| private SpannableStringBuilder mFooterText; |
| private String mHelpUri; |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| setupFooter(); |
| } |
| |
| @Override |
| public int getMetricsCategory() { |
| return SettingsEnums.FUELGAUGE_BATTERY_SAVER; |
| } |
| |
| @Override |
| protected int getPreferenceScreenResId() { |
| return R.xml.battery_saver_settings; |
| } |
| |
| @Override |
| protected String getLogTag() { |
| return TAG; |
| } |
| |
| @Override |
| public int getHelpResource() { |
| return R.string.help_url_battery_saver_settings; |
| } |
| |
| /** |
| * For Search. |
| */ |
| public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = |
| new BaseSearchIndexProvider() { |
| @Override |
| public List<SearchIndexableResource> getXmlResourcesToIndex( |
| Context context, boolean enabled) { |
| final SearchIndexableResource sir = new SearchIndexableResource(context); |
| sir.xmlResId = R.xml.battery_saver_settings; |
| return Arrays.asList(sir); |
| } |
| }; |
| |
| // Updates the footer for this page. |
| @VisibleForTesting |
| void setupFooter() { |
| mFooterText = new SpannableStringBuilder(getText( |
| com.android.internal.R.string.battery_saver_description_with_learn_more)); |
| mHelpUri = getString(R.string.help_url_battery_saver_settings); |
| if (!TextUtils.isEmpty(mHelpUri)) { |
| addHelpLink(); |
| } |
| } |
| |
| // Changes the text to include a learn more link if possible. |
| @VisibleForTesting |
| void addHelpLink() { |
| FooterPreference pref = getPreferenceScreen().findPreference(KEY_FOOTER_PREFERENCE); |
| if (pref != null) { |
| SupportPageLearnMoreSpan.linkify(mFooterText, this, mHelpUri); |
| pref.setTitle(mFooterText); |
| } |
| } |
| |
| /** |
| * A {@link URLSpan} that opens a support page when clicked |
| */ |
| public static class SupportPageLearnMoreSpan extends URLSpan { |
| |
| |
| private static final String ANNOTATION_URL = "url"; |
| private final Fragment mFragment; |
| private final String mUriString; |
| |
| public SupportPageLearnMoreSpan(Fragment fragment, String uriString) { |
| // sets the url to empty string so we can prevent any other span processing from |
| // from clearing things we need in this string. |
| super(""); |
| mFragment = fragment; |
| mUriString = uriString; |
| } |
| |
| @Override |
| public void onClick(View widget) { |
| if (mFragment != null) { |
| // launch the support page |
| mFragment.startActivityForResult(HelpUtils.getHelpIntent(mFragment.getContext(), |
| mUriString, ""), 0); |
| } |
| } |
| |
| @Override |
| public void updateDrawState(TextPaint ds) { |
| super.updateDrawState(ds); |
| // remove underline |
| ds.setUnderlineText(false); |
| } |
| |
| /** |
| * This method takes a string and turns it into a url span that will launch a support page |
| * @param msg The text to turn into a link |
| * @param fragment The fragment which contains this span |
| * @param uriString The URI string of the help article to open when clicked |
| * @return A CharSequence containing the original text content as a url |
| */ |
| public static CharSequence linkify(Spannable msg, Fragment fragment, String uriString) { |
| Annotation[] spans = msg.getSpans(0, msg.length(), Annotation.class); |
| for (Annotation annotation : spans) { |
| int start = msg.getSpanStart(annotation); |
| int end = msg.getSpanEnd(annotation); |
| if (ANNOTATION_URL.equals(annotation.getValue())) { |
| SupportPageLearnMoreSpan link = |
| new SupportPageLearnMoreSpan(fragment, uriString); |
| msg.removeSpan(annotation); |
| msg.setSpan(link, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } |
| } |
| return msg; |
| } |
| } |
| } |