/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.jboss.ballroom.client.widgets.forms;
import java.util.Collection;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.Widget;
/**
* @author Heiko Braun
* @date 2/21/11
*/
public class ComboBoxItem extends FormItem<String> {
private ListBox listBox;
private boolean defaultToFirst;
private InputElementWrapper wrapper;
//private boolean postInit = false;
public ComboBoxItem(String name, String title) {
super(name, title);
this.listBox = new ListBox();
this.listBox.setTabIndex(0);
this.listBox.addChangeHandler(new ChangeHandler() {
@Override
public void onChange(ChangeEvent event) {
setModified(true);
setUndefined("".equals(getSelectedValue()));
}
});
this.wrapper = new InputElementWrapper(listBox.asWidget(), this);
wrapper.getElement().setAttribute("style", "width:100%");
}
@Override
public void setFiltered(boolean filtered) {
super.setFiltered(filtered);
super.toggleAccessConstraint(listBox, filtered);
listBox.setEnabled(!filtered);
wrapper.setConstraintsApply(filtered);
}
@Override
public String getValue() {
return getSelectedValue();
}
@Override
public Element getInputElement() {
return listBox.getElement();
}
private String getSelectedValue() {
int selectedIndex = listBox.getSelectedIndex();
if(selectedIndex>=0)
return listBox.getValue(selectedIndex);
else
return "";
}
@Override
public void resetMetaData() {
super.resetMetaData();
clearSelection();
setModified(false); // important: needs to be done after calling clearSelection()
}
@Override
public void setValue(String value) {
clearSelection();
for(int i=0; i< listBox.getItemCount(); i++)
{
if(listBox.getValue(i).equals(value))
{
selectItem(i);
break;
}
}
//postInit = true;
}
public void selectItem(int i) {
setUndefined(listBox.getValue(i).equals(""));
listBox.setItemSelected(i, true);
}
@Override
public Widget asWidget() {
return wrapper;
}
public void clearSelection() {
this.listBox.setSelectedIndex(0);
}
public void setDefaultToFirstOption(boolean b) {
this.defaultToFirst = b;
}
public void setValueMap(String[] values) {
listBox.clear();
//listBox.clearSelection();
if(values.length==0 || !values[0].isEmpty())
listBox.addItem("");
for(String s : values)
{
listBox.addItem(s);
}
if(defaultToFirst)
selectItem(0);
}
public void setValueMap(Collection<String> values) {
listBox.clear();
//listBox.clearSelection();
if(values.isEmpty() || !values.iterator().next().isEmpty())
listBox.addItem("");
for(String s : values)
{
listBox.addItem(s);
}
if(defaultToFirst)
selectItem(0);
}
@Override
public void setEnabled(boolean b) {
listBox.setEnabled(b);
}
@Override
public String getErrMessage() {
return "missing selection";
}
@Override
public boolean validate(String value) {
if(isRequired() && getSelectedValue().equals(""))
{
return false;
}
else
{
return true;
}
}
@Override
public void setErrMessage(final String errMessage) {
super.setErrMessage(errMessage);
wrapper.setErrMessage(errMessage);
}
@Override
public void setErroneous(boolean b) {
super.setErroneous(b);
wrapper.setErroneous(b);
}
@Override
public void clearValue() {
clearSelection();
if(defaultToFirst && listBox.getItemCount()>0)
selectItem(0);
}
/* public void addValueChangeHandler(ValueChangeHandler<String> handler) {
this.listBox.addValueChangeHandler(handler);
}*/
}