/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package de.odysseus.calyxo.forms.taglib.html;
import de.odysseus.calyxo.base.conf.ConfigException;
import de.odysseus.calyxo.forms.view.DefaultGroupModel;
import de.odysseus.calyxo.forms.view.GroupComponent;
import de.odysseus.calyxo.forms.view.GroupModel;
/**
* HTML checkbox tag.
*
* @author Oliver Stuhr
*/
public class CheckboxTag extends RadioTag implements GroupComponent {
/**
* Default constructor
*/
public CheckboxTag() {
super("checkbox");
}
/* (non-Javadoc)
* @see de.odysseus.calyxo.forms.view.GroupComponent#isSelectable(java.lang.String)
*/
public boolean isSelectable(String value) {
return value != null;
}
protected void checkMultiple() throws Exception {
if (getContext().isMultiple(this)) {
if (getValue() == null) {
throw new ConfigException("An array checkbox requires a value!");
}
}
}
/**
* Get checked attribute
*/
protected String getCheckedAttribute() throws Exception {
if (getContext().isMultiple(this)) {
GroupModel group = (GroupModel)getContext().getComponentData(this);
if (group == null) {
group = new DefaultGroupModel(getContext(), this);
getContext().putComponentData(this, group);
}
if (group.isSelected(getValue())) {
return "checked";
} else if (!group.isSelectionAvailable() && getChecked() != null) {
return "checked";
}
return null;
} else {
return super.getCheckedAttribute();
}
}
/**
* Get value attribute
*/
protected String getValueAttribute() throws Exception {
return getValue() == null ? "true" : super.getValueAttribute();
}
}