/*
* 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));
}
}