/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.wicket.request.target.component;
import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.Page;
import org.apache.wicket.RequestCycle;
import org.apache.wicket.Component.IVisitor;
import org.apache.wicket.feedback.IFeedback;
/**
* Default implementation of {@link org.apache.wicket.request.target.component.IComponentRequestTarget}.
* Target that denotes a single component instance.
*
* @author Eelco Hillenius
*/
public class ComponentRequestTarget implements IComponentRequestTarget
{
/** the component instance. */
private final Component component;
/**
* Construct.
*
* @param component
* the component instance
*/
public ComponentRequestTarget(final Component component)
{
if (component == null)
{
throw new IllegalArgumentException("Argument 'component' must be not null");
}
this.component = component;
}
/**
* @see org.apache.wicket.IRequestTarget#respond(org.apache.wicket.RequestCycle)
*/
public void respond(final RequestCycle requestCycle)
{
// Initialize temporary variables
Page page = component.getPage();
if (page != null)
{
page.startComponentRender(component);
}
// Let component render itself
if (component instanceof Page)
{
// Use the default Page request target, if component is a Page
new PageRequestTarget((Page)component).respond(requestCycle);
}
else
{
// Render the component
try
{
// collect feedback
if (component instanceof MarkupContainer)
{
MarkupContainer container = (MarkupContainer)component;
container.visitChildren(IFeedback.class, new IVisitor()
{
public Object component(Component component)
{
((IFeedback)component).updateFeedback();
return IVisitor.CONTINUE_TRAVERSAL;
}
});
}
if (component instanceof IFeedback)
{
((IFeedback)component).updateFeedback();
}
// attach
component.attach();
// Render the component
component.renderComponent();
}
finally
{
component.getPage().detach();
}
}
if (page != null)
{
page.endComponentRender(component);
}
}
/**
* @see org.apache.wicket.request.target.component.IComponentRequestTarget#getComponent()
*/
public final Component getComponent()
{
return component;
}
/**
* @see org.apache.wicket.IRequestTarget#detach(org.apache.wicket.RequestCycle)
*/
public void detach(final RequestCycle requestCycle)
{
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(final Object obj)
{
if (obj instanceof ComponentRequestTarget)
{
ComponentRequestTarget that = (ComponentRequestTarget)obj;
return component.equals(that.component);
}
return false;
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode()
{
int result = "ComponentRequestTarget".hashCode();
result += component.hashCode();
return 17 * result;
}
/**
* @see java.lang.Object#toString()
*/
public String toString()
{
return "[ComponentRequestTarget@" + hashCode() + " " + component + "]";
}
}