001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.devutils.debugbar;
018
019import org.apache.wicket.Component;
020import org.apache.wicket.Page;
021import org.apache.wicket.devutils.pagestore.PageStorePage;
022import org.apache.wicket.model.IModel;
023import org.apache.wicket.pageStore.IPersistentPageStore;
024import org.apache.wicket.request.resource.PackageResourceReference;
025import org.apache.wicket.request.resource.ResourceReference;
026
027/**
028 * A panel that adds a link to persisted pages to the debug bar.
029 */
030public class PageStoreDebugPanel extends StandardDebugPanel
031{
032        private static final long serialVersionUID = 1L;
033
034        /** */
035        public static final IDebugBarContributor DEBUG_BAR_CONTRIB = new IDebugBarContributor()
036        {
037                private static final long serialVersionUID = 1L;
038
039                @Override
040                public Component createComponent(final String id, final DebugBar debugBar)
041                {
042                        return new PageStoreDebugPanel(id);
043                }
044        };
045
046        /**
047         * Construct.
048         * 
049         * @param id
050         *          The component id
051         */
052        public PageStoreDebugPanel(final String id)
053        {
054                super(id);
055        }
056
057        @Override
058        protected Class<? extends Page> getLinkPageClass()
059        {
060                return PageStorePage.class;
061        }
062
063        @Override
064        protected ResourceReference getImageResourceReference()
065        {
066                return new PackageResourceReference(PageStoreDebugPanel.class, "harddrive.png");
067        }
068
069        @Override
070        protected IModel<String> getDataModel()
071        {
072                return new IModel<String>()
073                {
074                        private static final long serialVersionUID = 1L;
075
076                        @Override
077                        public String getObject()
078                        {
079                                IPersistentPageStore store = PageStorePage.getPersistentPageStore();
080                                return String.format("Persisted pages: %s", store == null ? "N/A" : store.getTotalSize());
081                        }
082                };
083        }
084}