/**

  * Copyright 2009 Martin Vysny.

  *

  * This file is part of WebVM.

  *

  * WebVM is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * WebVM is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with WebVM.  If not, see <http://www.gnu.org/licenses/>.

  */

 package sk.baka.webvm;

 import sk.baka.webvm.analyzer.ProblemReport;

 import java.util.List;

 import org.apache.wicket.behavior.SimpleAttributeModifier;

 import org.apache.wicket.markup.html.basic.Label;

 import org.apache.wicket.markup.html.list.ListItem;

 import org.apache.wicket.markup.html.list.ListView;

 import org.apache.wicket.model.IModel;

 import org.apache.wicket.model.LoadableDetachableModel;

 /**

  * Shows the "Problems" page and provides the problems analysis.

  * @author Martin Vysny

  */

 public final class Problems extends WebVMPage {

     private static final long serialVersionUID = 1L;

     /**

      * Creates new instance

      */

     public Problems() {

         final IModel<List<ProblemReport>> model = new ProblemsModel();

         final ListView<ProblemReport> list = new ProblemsListView("problemList", model);

         border.add(list);

     }

     /**

      * Provides a list of model. Stateless.

      */

     private static class ProblemsModel extends LoadableDetachableModel<List<ProblemReport>> {

         private static final long serialVersionUID = 1L;

         @Override

         protected List<ProblemReport> load() {

             return WicketApplication.getAnalyzer().getProblems(WicketApplication.getHistory().getVmstatHistory());

         }

     }

     public static final String DARK_GREEN = "#28cb17";

     public static final String LIGHT_RED = "#d24343";

     /**

      * Shows a list of problem reports.

      */

     private static class ProblemsListView extends ListView<ProblemReport> {

         public ProblemsListView(String id, IModel<? extends List<? extends ProblemReport>> model) {

             super(id, model);

         }

         private static final long serialVersionUID = 1L;

         @Override

         protected void populateItem(ListItem<ProblemReport> item) {

             final ProblemReport pr = item.getModelObject();

             item.add(new Label("problemClass", pr.pclass));

             final Label l = new Label("problemSeverity", pr.isProblem ? "WARN" : "OK");

             l.add(new SimpleAttributeModifier("bgcolor", pr.isProblem ? LIGHT_RED : DARK_GREEN));

             item.add(l);

             final Label desc = new Label("problemDesc", pr.desc);

             desc.setEscapeModelStrings(false);

             item.add(desc);

             item.add(new Label("problemDiagnosis", pr.diagnosis));

         }

     }

 }