mirror of https://github.com/TeamNewPipe/NewPipe
288 lines
15 KiB
Java
288 lines
15 KiB
Java
package org.schabi.newpipe.util.external_communication;
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import android.content.Context;
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import android.text.SpannableStringBuilder;
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import android.text.method.LinkMovementMethod;
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import android.text.style.ClickableSpan;
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import android.text.style.URLSpan;
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import android.text.util.Linkify;
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import android.util.Log;
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import android.view.View;
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import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.core.text.HtmlCompat;
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import org.schabi.newpipe.extractor.Info;
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import org.schabi.newpipe.extractor.stream.StreamInfo;
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import org.schabi.newpipe.util.NavigationHelper;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import io.noties.markwon.Markwon;
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import io.noties.markwon.linkify.LinkifyPlugin;
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import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
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import io.reactivex.rxjava3.core.Single;
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import io.reactivex.rxjava3.disposables.CompositeDisposable;
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import io.reactivex.rxjava3.schedulers.Schedulers;
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import static org.schabi.newpipe.util.external_communication.InternalUrlsHandler.playOnPopup;
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public final class TextLinkifier {
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public static final String TAG = TextLinkifier.class.getSimpleName();
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private static final Pattern HASHTAGS_PATTERN = Pattern.compile("(#[A-Za-z0-9_]+)");
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private static final Pattern TIMESTAMPS_PATTERN = Pattern.compile(
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"(?:^|(?!:)\\W)(?:([0-5]?[0-9]):)?([0-5]?[0-9]):([0-5][0-9])(?=$|(?!:)\\W)");
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private TextLinkifier() {
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}
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/**
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* Create web links for contents with an HTML description.
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* <p>
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* This will call {@link TextLinkifier#changeIntentsOfDescriptionLinks(TextView, CharSequence,
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* Info, CompositeDisposable)} after having linked the URLs with
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* {@link HtmlCompat#fromHtml(String, int)}.
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*
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* @param textView the TextView to set the htmlBlock linked
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* @param htmlBlock the htmlBlock to be linked
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* @param htmlCompatFlag the int flag to be set when {@link HtmlCompat#fromHtml(String, int)}
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* will be called
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* @param relatedInfo if given, handle timestamps to open the stream in the popup player at
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* the specific time, and hashtags to search for the term in the correct
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* service
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* @param disposables disposables created by the method are added here and their lifecycle
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* should be handled by the calling class
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*/
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public static void createLinksFromHtmlBlock(@NonNull final TextView textView,
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final String htmlBlock,
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final int htmlCompatFlag,
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@Nullable final Info relatedInfo,
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final CompositeDisposable disposables) {
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changeIntentsOfDescriptionLinks(
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textView, HtmlCompat.fromHtml(htmlBlock, htmlCompatFlag), relatedInfo, disposables);
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}
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/**
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* Create web links for contents with a plain text description.
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* <p>
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* This will call {@link TextLinkifier#changeIntentsOfDescriptionLinks(TextView, CharSequence,
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* Info, CompositeDisposable)} after having linked the URLs with
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* {@link TextView#setAutoLinkMask(int)} and
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* {@link TextView#setText(CharSequence, TextView.BufferType)}.
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*
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* @param textView the TextView to set the plain text block linked
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* @param plainTextBlock the block of plain text to be linked
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* @param relatedInfo if given, handle timestamps to open the stream in the popup player at
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* the specific time, and hashtags to search for the term in the correct
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* service
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* @param disposables disposables created by the method are added here and their lifecycle
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* should be handled by the calling class
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*/
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public static void createLinksFromPlainText(@NonNull final TextView textView,
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final String plainTextBlock,
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@Nullable final Info relatedInfo,
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final CompositeDisposable disposables) {
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textView.setAutoLinkMask(Linkify.WEB_URLS);
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textView.setText(plainTextBlock, TextView.BufferType.SPANNABLE);
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changeIntentsOfDescriptionLinks(textView, textView.getText(), relatedInfo, disposables);
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}
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/**
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* Create web links for contents with a markdown description.
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* <p>
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* This will call {@link TextLinkifier#changeIntentsOfDescriptionLinks(TextView, CharSequence,
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* Info, CompositeDisposable)} after creating an {@link Markwon} object and using
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* {@link Markwon#setMarkdown(TextView, String)}.
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*
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* @param textView the TextView to set the plain text block linked
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* @param markdownBlock the block of markdown text to be linked
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* @param relatedInfo if given, handle timestamps to open the stream in the popup player at
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* the specific time, and hashtags to search for the term in the correct
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* @param disposables disposables created by the method are added here and their lifecycle
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* should be handled by the calling class
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*/
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public static void createLinksFromMarkdownText(@NonNull final TextView textView,
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final String markdownBlock,
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@Nullable final Info relatedInfo,
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final CompositeDisposable disposables) {
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final Markwon markwon = Markwon.builder(textView.getContext())
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.usePlugin(LinkifyPlugin.create()).build();
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changeIntentsOfDescriptionLinks(textView, markwon.toMarkdown(markdownBlock), relatedInfo,
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disposables);
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}
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/**
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* Add click listeners which opens a search on hashtags in a plain text.
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* <p>
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* This method finds all timestamps in the {@link SpannableStringBuilder} of the description
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* using a regular expression, adds for each a {@link ClickableSpan} which opens
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* {@link NavigationHelper#openSearch(Context, int, String)} and makes a search on the hashtag,
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* in the service of the content.
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*
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* @param context the context to use
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* @param spannableDescription the SpannableStringBuilder with the text of the
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* content description
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* @param relatedInfo used to search for the term in the correct service
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*/
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private static void addClickListenersOnHashtags(final Context context,
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@NonNull final SpannableStringBuilder
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spannableDescription,
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final Info relatedInfo) {
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final String descriptionText = spannableDescription.toString();
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final Matcher hashtagsMatches = HASHTAGS_PATTERN.matcher(descriptionText);
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while (hashtagsMatches.find()) {
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final int hashtagStart = hashtagsMatches.start(1);
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final int hashtagEnd = hashtagsMatches.end(1);
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final String parsedHashtag = descriptionText.substring(hashtagStart, hashtagEnd);
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// don't add a ClickableSpan if there is already one, which should be a part of an URL,
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// already parsed before
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if (spannableDescription.getSpans(hashtagStart, hashtagEnd,
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ClickableSpan.class).length == 0) {
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spannableDescription.setSpan(new ClickableSpan() {
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@Override
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public void onClick(@NonNull final View view) {
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NavigationHelper.openSearch(context, relatedInfo.getServiceId(),
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parsedHashtag);
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}
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}, hashtagStart, hashtagEnd, 0);
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}
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}
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}
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/**
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* Add click listeners which opens the popup player on timestamps in a plain text.
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* <p>
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* This method finds all timestamps in the {@link SpannableStringBuilder} of the description
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* using a regular expression, adds for each a {@link ClickableSpan} which opens the popup
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* player at the time indicated in the timestamps.
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*
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* @param context the context to use
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* @param spannableDescription the SpannableStringBuilder with the text of the
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* content description
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* @param relatedInfo what to open in the popup player when timestamps are clicked
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* @param disposables disposables created by the method are added here and their
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* lifecycle should be handled by the calling class
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*/
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private static void addClickListenersOnTimestamps(final Context context,
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@NonNull final SpannableStringBuilder
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spannableDescription,
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final Info relatedInfo,
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final CompositeDisposable disposables) {
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final String descriptionText = spannableDescription.toString();
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final Matcher timestampsMatches = TIMESTAMPS_PATTERN.matcher(descriptionText);
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while (timestampsMatches.find()) {
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final int timestampStart = timestampsMatches.start(2);
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final int timestampEnd = timestampsMatches.end(3);
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final String parsedTimestamp = descriptionText.substring(timestampStart, timestampEnd);
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final String[] timestampParts = parsedTimestamp.split(":");
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final int seconds;
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if (timestampParts.length == 3) { // timestamp format: XX:XX:XX
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seconds = Integer.parseInt(timestampParts[0]) * 3600 // hours
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+ Integer.parseInt(timestampParts[1]) * 60 // minutes
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+ Integer.parseInt(timestampParts[2]); // seconds
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} else if (timestampParts.length == 2) { // timestamp format: XX:XX
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seconds = Integer.parseInt(timestampParts[0]) * 60 // minutes
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+ Integer.parseInt(timestampParts[1]); // seconds
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} else {
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continue;
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}
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spannableDescription.setSpan(new ClickableSpan() {
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@Override
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public void onClick(@NonNull final View view) {
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playOnPopup(context, relatedInfo.getUrl(), relatedInfo.getService(), seconds,
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disposables);
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}
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}, timestampStart, timestampEnd, 0);
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}
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}
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/**
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* Change links generated by libraries in the description of a content to a custom link action
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* and add click listeners on timestamps in this description.
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* <p>
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* Instead of using an {@link android.content.Intent#ACTION_VIEW} intent in the description of
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* a content, this method will parse the {@link CharSequence} and replace all current web links
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* with {@link ShareUtils#openUrlInBrowser(Context, String, boolean)}.
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* This method will also add click listeners on timestamps in this description, which will play
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* the content in the popup player at the time indicated in the timestamp, by using
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* {@link TextLinkifier#addClickListenersOnTimestamps(Context, SpannableStringBuilder, Info,
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* CompositeDisposable)} method and click listeners on hashtags, by using
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* {@link TextLinkifier#addClickListenersOnHashtags(Context, SpannableStringBuilder, Info)},
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* which will open a search on the current service with the hashtag.
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* <p>
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* This method is required in order to intercept links and e.g. show a confirmation dialog
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* before opening a web link.
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*
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* @param textView the TextView in which the converted CharSequence will be applied
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* @param chars the CharSequence to be parsed
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* @param relatedInfo if given, handle timestamps to open the stream in the popup player at
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* the specific time, and hashtags to search for the term in the correct
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* service
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* @param disposables disposables created by the method are added here and their lifecycle
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* should be handled by the calling class
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*/
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private static void changeIntentsOfDescriptionLinks(final TextView textView,
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final CharSequence chars,
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@Nullable final Info relatedInfo,
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final CompositeDisposable disposables) {
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disposables.add(Single.fromCallable(() -> {
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final Context context = textView.getContext();
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// add custom click actions on web links
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final SpannableStringBuilder textBlockLinked = new SpannableStringBuilder(chars);
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final URLSpan[] urls = textBlockLinked.getSpans(0, chars.length(), URLSpan.class);
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for (final URLSpan span : urls) {
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final String url = span.getURL();
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final ClickableSpan clickableSpan = new ClickableSpan() {
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public void onClick(@NonNull final View view) {
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if (!InternalUrlsHandler.handleUrlDescriptionTimestamp(
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new CompositeDisposable(), context, url)) {
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ShareUtils.openUrlInBrowser(context, url, false);
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}
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}
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};
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textBlockLinked.setSpan(clickableSpan, textBlockLinked.getSpanStart(span),
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textBlockLinked.getSpanEnd(span), textBlockLinked.getSpanFlags(span));
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textBlockLinked.removeSpan(span);
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}
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// add click actions on plain text timestamps only for description of contents,
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// unneeded for meta-info or other TextViews
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if (relatedInfo != null) {
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if (relatedInfo instanceof StreamInfo) {
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addClickListenersOnTimestamps(context, textBlockLinked, relatedInfo,
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disposables);
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}
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addClickListenersOnHashtags(context, textBlockLinked, relatedInfo);
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}
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return textBlockLinked;
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}).subscribeOn(Schedulers.computation())
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe(
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textBlockLinked -> setTextViewCharSequence(textView, textBlockLinked),
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throwable -> {
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Log.e(TAG, "Unable to linkify text", throwable);
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// this should never happen, but if it does, just fallback to it
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setTextViewCharSequence(textView, chars);
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}));
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}
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private static void setTextViewCharSequence(@NonNull final TextView textView,
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final CharSequence charSequence) {
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textView.setText(charSequence);
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textView.setMovementMethod(LinkMovementMethod.getInstance());
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textView.setVisibility(View.VISIBLE);
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}
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}
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