/*
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* Copyright (C) 2018 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.utils;
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import android.content.ActivityNotFoundException;
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import android.content.Context;
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import android.content.Intent;
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import android.text.Annotation;
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import android.text.SpannableString;
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import android.text.SpannableStringBuilder;
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import android.text.TextPaint;
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import android.text.style.URLSpan;
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import android.util.Log;
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import android.view.View;
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/**
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* This class is used to add {@link View.OnClickListener} for the text been wrapped by
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* annotation.
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*/
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public class AnnotationSpan extends URLSpan {
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private final View.OnClickListener mClickListener;
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private AnnotationSpan(View.OnClickListener lsn) {
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super((String) null);
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mClickListener = lsn;
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}
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@Override
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public void onClick(View widget) {
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if (mClickListener != null) {
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mClickListener.onClick(widget);
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}
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}
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@Override
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public void updateDrawState(TextPaint ds) {
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super.updateDrawState(ds);
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ds.setUnderlineText(false);
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}
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public static CharSequence linkify(CharSequence rawText, LinkInfo... linkInfos) {
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SpannableString msg = new SpannableString(rawText);
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Annotation[] spans = msg.getSpans(0, msg.length(), Annotation.class);
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SpannableStringBuilder builder = new SpannableStringBuilder(msg);
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for (Annotation annotation : spans) {
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final String key = annotation.getValue();
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int start = msg.getSpanStart(annotation);
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int end = msg.getSpanEnd(annotation);
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AnnotationSpan link = null;
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for (LinkInfo linkInfo : linkInfos) {
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if (linkInfo.mAnnotation.equals(key)) {
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link = new AnnotationSpan(linkInfo.mListener);
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break;
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}
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}
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if (link != null) {
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builder.setSpan(link, start, end, msg.getSpanFlags(link));
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}
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}
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return builder;
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}
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/**
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* Data class to store the annotation and the click action
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*/
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public static class LinkInfo {
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private static final String TAG = "AnnotationSpan.LinkInfo";
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public static final String DEFAULT_ANNOTATION = "link";
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private final String mAnnotation;
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private final Boolean mActionable;
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private final View.OnClickListener mListener;
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public LinkInfo(String annotation, View.OnClickListener listener) {
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mAnnotation = annotation;
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mListener = listener;
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mActionable = true; // assume actionable
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}
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public LinkInfo(Context context, String annotation, Intent intent) {
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mAnnotation = annotation;
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if (intent != null) {
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mActionable = context.getPackageManager()
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.resolveActivity(intent, 0 /* flags */) != null;
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} else {
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mActionable = false;
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}
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if (!mActionable) {
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mListener = null;
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} else {
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mListener = view -> {
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try {
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view.startActivityForResult(intent, 0);
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} catch (ActivityNotFoundException e) {
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Log.w(TAG, "Activity was not found for intent, " + intent);
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}
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};
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}
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}
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public boolean isActionable() {
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return mActionable;
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}
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}
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}
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