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package de.danoeh.antennapod.util.playback;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.Log;
import android.util.TypedValue;
import org.apache.commons.lang3.Validate;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import de.danoeh.antennapod.BuildConfig;
import de.danoeh.antennapod.util.Converter;
import de.danoeh.antennapod.util.ShownotesProvider;
/**
* Connects chapter information and shownotes of a shownotesProvider, for example by making it possible to use the
* shownotes to navigate to another position in the podcast or by highlighting certain parts of the shownotesProvider's
* shownotes.
* <p/>
* A timeline object needs a shownotesProvider from which the chapter information is retrieved and shownotes are generated.
*/
public class Timeline {
private static final String TAG = "Timeline";
private static final String WEBVIEW_STYLE = "@font-face { font-family: 'Roboto-Light'; src: url('file:///android_asset/Roboto-Light.ttf'); } * { color: %s; font-family: roboto-Light; font-size: 11pt; } a { font-style: normal; text-decoration: none; font-weight: normal; color: #00A8DF; } a.timecode { color: #669900; } img { display: block; margin: 10 auto; max-width: %s; height: auto; } body { margin: %dpx %dpx %dpx %dpx; }";
private ShownotesProvider shownotesProvider;
private final String colorString;
private final int pageMargin;
public Timeline(Context context, ShownotesProvider shownotesProvider) {
if (shownotesProvider == null) throw new IllegalArgumentException("shownotesProvider = null");
this.shownotesProvider = shownotesProvider;
TypedArray res = context
.getTheme()
.obtainStyledAttributes(
new int[]{android.R.attr.textColorPrimary});
int colorResource = res.getColor(0, 0);
colorString = String.format("#%06X",
0xFFFFFF & colorResource);
res.recycle();
pageMargin = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 8, context.getResources()
.getDisplayMetrics()
);
}
private static final Pattern TIMECODE_LINK_REGEX = Pattern.compile("antennapod://timecode/((\\d+))");
private static final String TIMECODE_LINK = "<a class=\"timecode\" href=\"antennapod://timecode/%d\">%s</a>";
private static final Pattern TIMECODE_REGEX = Pattern.compile("\\b(?:(?:(([0-9][0-9])):))?(([0-9][0-9])):(([0-9][0-9]))\\b");
/**
* Applies an app-specific CSS stylesheet and adds timecode links (optional).
* <p/>
* This method does NOT change the original shownotes string of the shownotesProvider object and it should
* also not be changed by the caller.
*
* @param addTimecodes True if this method should add timecode links
* @return The processed HTML string.
*/
public String processShownotes(final boolean addTimecodes) {
final Playable playable = (shownotesProvider instanceof Playable) ? (Playable) shownotesProvider : null;
// load shownotes
String shownotes;
try {
shownotes = shownotesProvider.loadShownotes().call();
} catch (Exception e) {
e.printStackTrace();
return null;
}
if (shownotes == null) {
if (BuildConfig.DEBUG)
Log.d(TAG, "shownotesProvider contained no shownotes. Returning empty string");
return "";
}
Document document = Jsoup.parse(shownotes);
// apply style
String styleStr = String.format(WEBVIEW_STYLE, colorString, "100%", pageMargin,
pageMargin, pageMargin, pageMargin);
document.head().appendElement("style").attr("type", "text/css").text(styleStr);
// apply timecode links
if (addTimecodes) {
Elements elementsWithTimeCodes = document.body().getElementsMatchingOwnText(TIMECODE_REGEX);
if (BuildConfig.DEBUG)
Log.d(TAG, "Recognized " + elementsWithTimeCodes.size() + " timecodes");
for (Element element : elementsWithTimeCodes) {
Matcher matcherLong = TIMECODE_REGEX.matcher(element.text());
StringBuffer buffer = new StringBuffer();
while (matcherLong.find()) {
String h = matcherLong.group(1);
String group = matcherLong.group(0);
int time = (h != null) ? Converter.durationStringLongToMs(group) :
Converter.durationStringShortToMs(group);
String rep;
if (playable == null || playable.getDuration() > time) {
rep = String.format(TIMECODE_LINK, time, group);
} else {
rep = group;
}
matcherLong.appendReplacement(buffer, rep);
}
matcherLong.appendTail(buffer);
element.html(buffer.toString());
}
}
Log.i(TAG, "Out: " + document.toString());
return document.toString();
}
/**
* Returns true if the given link is a timecode link.
*/
public static boolean isTimecodeLink(String link) {
return link != null && link.matches(TIMECODE_LINK_REGEX.pattern());
}
/**
* Returns the time in milliseconds that is attached to this link or -1
* if the link is no valid timecode link.
*/
public static int getTimecodeLinkTime(String link) {
if (isTimecodeLink(link)) {
Matcher m = TIMECODE_LINK_REGEX.matcher(link);
try {
if (m.find()) {
return Integer.valueOf(m.group(1));
}
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
return -1;
}
public void setShownotesProvider(ShownotesProvider shownotesProvider) {
Validate.notNull(shownotesProvider);
this.shownotesProvider = shownotesProvider;
}
}
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