58 lines
1.8 KiB
Java
58 lines
1.8 KiB
Java
/*
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* Copyright (C) 2014 Thialfihar <thi@thialfihar.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.util;
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import android.content.Context;
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import android.text.Spannable;
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import android.text.style.ForegroundColorSpan;
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import org.sufficientlysecure.keychain.R;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class Highlighter {
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private Context mContext;
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private String mQuery;
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public Highlighter(Context context, String query) {
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mContext = context;
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mQuery = query;
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}
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public Spannable highlight(String text) {
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Spannable highlight = Spannable.Factory.getInstance().newSpannable(text);
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if (mQuery == null) {
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return highlight;
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}
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Pattern pattern = Pattern.compile("(?i)(" + mQuery.trim().replaceAll("\\s+", "|") + ")");
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Matcher matcher = pattern.matcher(text);
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while (matcher.find()) {
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highlight.setSpan(
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new ForegroundColorSpan(mContext.getResources().getColor(R.color.emphasis)),
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matcher.start(),
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matcher.end(),
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Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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return highlight;
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}
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}
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