org.zanata.webtrans.client.ui.HighlightingLabel.java Source code

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Here is the source code for org.zanata.webtrans.client.ui.HighlightingLabel.java

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/*
 * Copyright 2010, Red Hat, Inc. and individual contributors as indicated by the
 * @author tags. See the copyright.txt file in the distribution for a full
 * listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This software is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
 * site: http://www.fsf.org.
 */
package org.zanata.webtrans.client.ui;

import com.google.common.base.Strings;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.HTML;

public class HighlightingLabel extends HTML implements SourceContentWrapper {

    private String plainText;

    public HighlightingLabel() {
        // workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=116083
        super("<pre></pre>");
    }

    public HighlightingLabel(String text) {
        this();
        setText(text);
    }

    @Override
    public String getText() {
        return plainText;
    }

    @Override
    public void setText(String text) {
        this.plainText = text;
        highlight();
        updateHorizontalAlignment();
    }

    private void highlight() {
        Element preElement = getElement().getFirstChildElement();
        Highlighting.syntaxHighlight(Strings.nullToEmpty(plainText), preElement);
        preElement.addClassName("cm-s-default");
        String styled = preElement.getInnerHTML().replaceAll("\\n", "<span class='newline'></span>\n");
        preElement.setInnerHTML(styled);
    }

    @Override
    public void refresh() {
        // no op
    }

    @Override
    public void highlight(String searchTerm) {
        Element element = getElement();
        if (Strings.isNullOrEmpty(searchTerm)) {
            highlight();
        } else {
            Highlighting.searchHighlight(searchTerm, element);
        }
    }
}