Package com.alkacon.geranium.client.ui.input.impl

Source Code of com.alkacon.geranium.client.ui.input.impl.LabelNonTextOverflowImpl

/*
* This library is part of Geranium -
* an open source UI library for GWT.
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)-
*
* This library 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 library 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.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

package com.alkacon.geranium.client.ui.input.impl;

import com.alkacon.geranium.client.ui.input.Label;
import com.alkacon.geranium.client.util.ClientStringUtil;
import com.alkacon.geranium.client.util.TextMetrics;

import com.google.gwt.dom.client.Element;

/**
* Single line label implementation for gecko based browsers which don't support CSS property 'text-overflow'.<p>
*/
public class LabelNonTextOverflowImpl extends Label {

    /**
     * Creates an empty label.<p>
     */
    public LabelNonTextOverflowImpl() {

        super();
    }

    /**
     * Creates an empty label using the given element.<p>
     *
     * @param element the element to use
     */
    public LabelNonTextOverflowImpl(Element element) {

        super(element);
    }

    /**
     * Creates a label with the specified text.<p>
     *
     * @param text the new label's text
     */
    public LabelNonTextOverflowImpl(String text) {

        super(text);
    }

    /**
     * @see com.alkacon.geranium.client.ui.I_Truncable#truncate(java.lang.String, int)
     */
    @Override
    public void truncate(String textMetricsKey, int labelWidth) {

        super.setText(m_originalText);

        // measure the actual text width
        Element element = getElement();
        TextMetrics tm = TextMetrics.get(element, textMetricsKey);
        String text = element.getInnerText();
        int textWidth = tm.getWidth(text);
        tm.release();

        if (labelWidth >= textWidth) {
            updateTitle(false);
            return;
        }
        updateTitle(true);

        // if the text does not have enough space, fix it
        int maxChars = (int)(((float)labelWidth / (float)textWidth) * text.length());
        if (maxChars < 1) {
            maxChars = 1;
        }
        // use html instead of text because of the entities
        setHTML(ClientStringUtil.shortenString(text, maxChars));
    }

}
TOP

Related Classes of com.alkacon.geranium.client.ui.input.impl.LabelNonTextOverflowImpl

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.