org.opencms.gwt.client.ui.input.CmsSimpleTextBox Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (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
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* 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 org.opencms.gwt.client.ui.input;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.user.client.ui.TextBox;
/**
* A simple text box firing change events whenever a key is pressed and the value has changed.
*/
public class CmsSimpleTextBox extends TextBox {
/** The previous value. */
private String m_previousValue;
/**
* Constructor.
*/
public CmsSimpleTextBox() {
super();
addDomHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
fireChange();
}
}, KeyUpEvent.getType());
}
/**
* @see com.google.gwt.user.client.ui.ValueBoxBase#setValue(java.lang.Object, boolean)
*/
@Override
public void setValue(String value, boolean fireEvents) {
m_previousValue = value;
super.setValue(value, fireEvents);
}
/**
* Triggered on key press to fire event if the value changed.
*/
void fireChange() {
ValueChangeEvent.fireIfNotEqual(this, m_previousValue, getValue());
m_previousValue = getValue();
}
}