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package com.mohammedlakkadshaw.ken; | |
import java.util.Vector; | |
import org.xml.sax.XMLReader; | |
import android.text.Editable; | |
import android.text.Html; | |
import android.text.Spannable; | |
import android.text.style.BulletSpan; | |
import android.text.style.LeadingMarginSpan; | |
import android.text.style.TypefaceSpan; | |
import android.util.Log; | |
public class HtmlTagHandler implements Html.TagHandler { | |
private int mListItemCount = 0; | |
private Vector<String> mListParents = new Vector<String>(); | |
@Override | |
public void handleTag(final boolean opening, final String tag, Editable output, final XMLReader xmlReader) { | |
if (tag.equals("ul") || tag.equals("ol") || tag.equals("dd")) { | |
if (opening) { | |
mListParents.add(tag); | |
} else mListParents.remove(tag); | |
mListItemCount = 0; | |
} else if (tag.equals("li") && !opening) { | |
handleListTag(output); | |
} | |
else if(tag.equalsIgnoreCase("code")) { | |
if(opening) { | |
output.setSpan(new TypefaceSpan("monospace"), output.length(), output.length(), Spannable.SPAN_MARK_MARK); | |
} else { | |
Log.d("COde Tag","Code tag encountered"); | |
Object obj = getLast(output, TypefaceSpan.class); | |
int where = output.getSpanStart(obj); | |
output.setSpan(new TypefaceSpan("monospace"), where, output.length(), 0); | |
} | |
} | |
} | |
private Object getLast(Editable text, Class kind) { | |
Object[] objs = text.getSpans(0, text.length(), kind); | |
if(objs.length == 0) { | |
return null; | |
} else { | |
for (int i=objs.length; i > 0; i--) { | |
if(text.getSpanFlags(objs[i-1]) == Spannable.SPAN_MARK_MARK) { | |
return objs[i-1]; | |
} | |
} | |
return null; | |
} | |
} | |
private void handleListTag(Editable output) { | |
if (mListParents.lastElement().equals("ul")) { | |
output.append("\n"); | |
String[] split = output.toString().split("\n"); | |
int lastIndex = split.length - 1; | |
int start = output.length() - split[lastIndex].length() - 1; | |
output.setSpan(new BulletSpan(15 * mListParents.size()), start, output.length(), 0); | |
} else if (mListParents.lastElement().equals("ol")) { | |
mListItemCount++; | |
output.append("\n"); | |
String[] split = output.toString().split("\n"); | |
int lastIndex = split.length - 1; | |
int start = output.length() - split[lastIndex].length() - 1; | |
output.insert(start, mListItemCount + ". "); | |
output.setSpan(new LeadingMarginSpan.Standard(15 * mListParents.size()), start, output.length(), 0); | |
} | |
} | |
} |
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