/*
* 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.progressbar.examples;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton;
import org.apache.wicket.markup.html.form.Form;
import org.wicketstuff.progressbar.ProgressBar;
import org.wicketstuff.progressbar.Progression;
import org.wicketstuff.progressbar.ProgressionModel;
/**
* <p>
* Simple example of an active progress bar without using a dedicated Spring task service.
* </p>
*
* <p>
* The progress is stored directly in the page and the task is started in a new thread (this is not
* suited for production!).
* </p>
*
* @author Christopher Hlubek (hlubek)
*
*/
public class SimpleProgressExamplePage extends PageSupport
{
private static final long serialVersionUID = 1L;
/**
* The current progress is stored here
*/
int progress = 0;
int item = 0;
public SimpleProgressExamplePage()
{
final Form<Void> form = new Form<Void>("form");
final ProgressBar bar;
form.add(bar = new ProgressBar("bar", new ProgressionModel()
{
private static final long serialVersionUID = 1L;
// Get current progress from page field
@Override
protected Progression getProgression()
{
return new Progression(progress, "Item " + item);
}
})
{
private static final long serialVersionUID = 1L;
@Override
protected void onFinished(AjaxRequestTarget target)
{
// Hide progress bar after finish
setVisible(false);
// Add some JavaScript after finish
target.appendJavaScript("alert('Task done!')");
// re-enable button
Component button = form.get("submit");
button.setEnabled(true);
target.add(button);
}
});
// Hide progress bar initially
bar.setVisible(false);
form.add(new IndicatingAjaxButton("submit", form)
{
private static final long serialVersionUID = 1L;
@Override
protected void onSubmit(AjaxRequestTarget target, Form<?> form)
{
// Start the progress bar, will set visibility to true
bar.start(target);
// Thread holds reference to page :(
new Thread()
{
@Override
public void run()
{
for (int i = 0; i <= 50; i++)
{
try
{
Thread.sleep(400);
}
catch (InterruptedException e)
{
}
item = i;
progress = i * 2;
}
// The bar is stopped automatically, if progress is done
}
}.start();
// disable button
setEnabled(false);
}
@Override
protected void onError(AjaxRequestTarget target, Form<?> form)
{
target.prependJavaScript("alert('Failed to update progress');");
}
});
form.setOutputMarkupId(true);
add(form);
}
}