/*
* 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.wicketstuff.jquery.block;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.AjaxCallListener;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.request.resource.PackageResourceReference;
import org.apache.wicket.request.resource.ResourceReference;
import org.apache.wicket.resource.JQueryResourceReference;
public abstract class BlockingAjaxLink<T> extends AjaxLink<T>
{
private static final long serialVersionUID = 1L;
public static final ResourceReference BLOCK_JS = new PackageResourceReference(
BlockingAjaxLink.class, "jquery.blockUI.js");
final BlockOptions options;
public BlockingAjaxLink(final String id, BlockOptions options)
{
super(id, null);
this.options = options;
}
public BlockingAjaxLink(final String id, String message)
{
this(id, new BlockOptions().setMessage(message));
}
@Override
public void renderHead(IHeaderResponse response)
{
response.render(JavaScriptHeaderItem.forReference(JQueryResourceReference.get()));
response.render(JavaScriptHeaderItem.forReference(BLOCK_JS));
}
/**
* Returns ajax call decorator that will be used to decorate the ajax call.
*
* @return ajax call decorator
*/
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes attributes)
{
super.updateAjaxAttributes(attributes);
AjaxCallListener ajaxCallListener = new AjaxCallListener();
StringBuilder js = new StringBuilder();
CharSequence sel = getBlockElementsSelector();
if (sel != null)
{
js.append("$('").append(sel).append("').block( ");
}
else
{
js.append("$.blockUI( ");
}
js.append(options.toString()).append(" ); ");
ajaxCallListener.onBefore(js);
}
public CharSequence getBlockElementsSelector()
{
return null;
}
@Override
final public void onClick(final AjaxRequestTarget target)
{
doClick(target);
CharSequence sel = getBlockElementsSelector();
if (sel != null)
{
target.appendJavaScript("$('" + sel + "').unblock(); ");
}
else
{
target.appendJavaScript("$.unblockUI(); ");
}
}
public abstract void doClick(final AjaxRequestTarget target);
}