/*
* 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.examples.ajax.builtin;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.extensions.ajax.markup.html.form.upload.UploadProgressBar;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.form.upload.FileUpload;
import org.apache.wicket.markup.html.form.upload.FileUploadField;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.util.lang.Bytes;
import org.apache.wicket.validation.validator.StringValidator;
/**
* Demos ajax handling of a multipart form
*
* @author igor.vaynberg
*/
public class FileUploadPage extends BasePage
{
private static final long serialVersionUID = 1L;
private final FileUploadField file;
private final TextField<String> text;
/**
* Constructor
*/
public FileUploadPage()
{
// create a feedback panel
final Component feedback = new FeedbackPanel("feedback").setOutputMarkupId(true);
add(feedback);
// create the form
final Form<?> form = new Form<Void>("form")
{
private static final long serialVersionUID = 1L;
/**
* @see org.apache.wicket.markup.html.form.Form#onSubmit()
*/
@Override
protected void onSubmit()
{
// display uploaded info
info("Text: " + text.getModelObject());
FileUpload upload = file.getFileUpload();
if (upload == null)
{
info("No file uploaded");
}
else
{
info("File-Name: " + upload.getClientFileName() + " File-Size: " +
Bytes.bytes(upload.getSize()).toString());
}
}
};
form.setMaxSize(Bytes.megabytes(1));
add(form);
// create a textfield to demo non-file content
form.add(text = new TextField<String>("text", new Model<String>()));
text.add(StringValidator.minimumLength(2));
// create the file upload field
form.add(file = new FileUploadField("file"));
form.add(new Label("max", new AbstractReadOnlyModel<String>()
{
private static final long serialVersionUID = 1L;
@Override
public String getObject()
{
return form.getMaxSize().toString();
}
}));
form.add(new UploadProgressBar("progress", form, file));
// create the ajax button used to submit the form
form.add(new AjaxButton("ajaxSubmit")
{
private static final long serialVersionUID = 1L;
@Override
protected void onSubmit(AjaxRequestTarget target, Form<?> form)
{
info("This request was processed using AJAX");
// ajax-update the feedback panel
target.add(feedback);
}
@Override
protected void onError(AjaxRequestTarget target, Form<?> form)
{
// update feedback to display errors
target.add(feedback);
}
});
}
}