// 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.tapestry.AbstractComponent;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.form.IPropertySelectionModel;
/**
* A high level component used to render a drop-down list of options that the user may select.
*
* Informal parameters are applied to the <select> tag. To have greater control over the
* <option> tags, you must use a Select and Option or a concrete class
* of {@link org.apache.tapestry.link.ILinkRenderer} with the {@link OptionRenderer}.
*
* @author David Solis
*/
public abstract class PropertySelection extends AbstractComponent
{
/**
* @see AbstractComponent#renderComponent(IMarkupWriter, IRequestCycle)
**/
protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
{
boolean render = !cycle.isRewinding();
if (render)
{
IPropertySelectionModel model = getModel();
writer.begin("select");
writer.attribute("name", getName());
renderInformalParameters(writer, cycle);
writer.println();
int count = model.getOptionCount();
for (int i = 0; i < count; i++)
{
writer.begin("option");
writer.attribute("value", model.getValue(i));
writer.print(model.getLabel(i));
writer.end();
writer.println();
}
writer.end();
}
}
public abstract IPropertySelectionModel getModel();
public abstract String getName();
}