// 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.wml;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.hivemind.HiveMind;
import org.apache.tapestry.AbstractComponent;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.Tapestry;
/**
* A deck contains a collection of cards. There is a variety of card types, each specifying a
* different mode of user interaction.
*
* @author David Solis
* @since 3.0
*/
public abstract class Card extends AbstractComponent
{
private static final String ATTRIBUTE_NAME = "org.apache.tapestry.wml.Card";
/**
* @see AbstractComponent#renderComponent(IMarkupWriter, IRequestCycle)
*/
protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
{
if (cycle.getAttribute(ATTRIBUTE_NAME) != null)
throw new ApplicationRuntimeException(Tapestry.getMessage("Card.cards-may-not-nest"),
this, null, null);
cycle.setAttribute(ATTRIBUTE_NAME, this);
writer.begin("card");
String title = getTitle();
if (HiveMind.isNonBlank(title))
writer.attribute("title", title);
renderInformalParameters(writer, cycle);
IMarkupWriter nestedWriter = writer.getNestedWriter();
renderBody(nestedWriter, cycle);
nestedWriter.close();
writer.end();
cycle.removeAttribute(ATTRIBUTE_NAME);
}
public abstract String getTitle();
}