// Copyright 2004, 2005 The Apache Software Foundation
//
// 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 org.apache.tapestry.contrib.form.checkboxes;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.tapestry.BaseComponent;
import org.apache.tapestry.IForm;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.form.Checkbox;
/**
* @author mb
* @since 4.0
*/
public abstract class ControlledCheckbox extends BaseComponent
{
public abstract CheckboxGroup getGroup();
public String getCheckboxName()
{
Checkbox checkbox = (Checkbox) getComponent("checkbox");
String name = checkbox.getName();
return name;
}
public IForm getForm()
{
Checkbox checkbox = (Checkbox) getComponent("checkbox");
IForm form = checkbox.getForm();
return form;
}
/**
* @see org.apache.tapestry.BaseComponent#renderComponent(org.apache.tapestry.IMarkupWriter,
* org.apache.tapestry.IRequestCycle)
*/
protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
{
super.renderComponent(writer, cycle);
registerCheckbox();
}
protected void registerCheckbox()
{
getCheckboxGroup().registerControlledCheckbox(this);
}
public CheckboxGroup getCheckboxGroup()
{
CheckboxGroup group = getGroup();
if (group == null)
{
IRequestCycle cycle = getPage().getRequestCycle();
group = (CheckboxGroup) cycle
.getAttribute(CheckboxGroup.CHECKBOX_GROUP_ATTRIBUTE);
}
if (group == null)
throw new ApplicationRuntimeException(
"The component "
+ getExtendedId()
+ " must be wrapped by a CheckboxGroup or the 'group' parameter must be set.");
return group;
}
}