/*
* 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.devutils.debugbar;
import org.apache.wicket.Component;
import org.apache.wicket.Page;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.request.resource.PackageResourceReference;
import org.apache.wicket.request.resource.ResourceReference;
import org.apache.wicket.util.lang.Bytes;
import org.apache.wicket.core.util.lang.WicketObjects;
/**
* A panel for the debug bar that shows the size of the currently shown page.
* <p>
* <strong>Note</strong>: this size includes the size of the debug bar itself too!
*/
public class PageSizeDebugPanel extends StandardDebugPanel
{
private static final long serialVersionUID = 1L;
/** */
public static final IDebugBarContributor DEBUG_BAR_CONTRIB = new IDebugBarContributor()
{
private static final long serialVersionUID = 1L;
public Component createComponent(final String id, final DebugBar debugBar)
{
return new PageSizeDebugPanel(id);
}
};
/**
* Construct.
*
* @param id
*/
public PageSizeDebugPanel(final String id)
{
super(id);
}
@Override
protected Class<? extends Page> getLinkPageClass()
{
// not used
return WebPage.class;
}
// Disable the link because there is no page with more detailed information
@Override
protected BookmarkablePageLink<Void> createLink(final String id)
{
BookmarkablePageLink<Void> bookmarkablePageLink = super.createLink(id);
bookmarkablePageLink.setEnabled(false);
return bookmarkablePageLink;
}
@Override
protected ResourceReference getImageResourceReference()
{
// TODO: need better image for this:
return new PackageResourceReference(SessionSizeDebugPanel.class, "harddrive.png");
}
@Override
protected IModel<String> getDataModel()
{
return new AbstractReadOnlyModel<String>()
{
private static final long serialVersionUID = 1L;
@Override
public String getObject()
{
Page enclosingPage = getPage();
long pageSize = WicketObjects.sizeof(enclosingPage);
Bytes pageSizeInBytes = (pageSize > -1 ? Bytes.bytes(pageSize) : null);
String pageSizeAsString = pageSizeInBytes != null ? pageSizeInBytes.toString()
: "unknown";
return "Page: " + pageSizeAsString;
}
};
}
}