package org.jtheque.core.managers.view.impl.components.model;

 /*

  * This file is part of JTheque.

  *

  * JTheque 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.

  *

  * JTheque 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 JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import org.jtheque.core.managers.Managers;

 import org.jtheque.core.managers.module.beans.ModuleContainer;

 import org.jtheque.core.managers.update.IUpdateManager;

 import org.jtheque.core.managers.update.Updatable;

 import org.jtheque.utils.bean.Version;

 import javax.swing.DefaultComboBoxModel;

 import java.util.ArrayList;

 import java.util.List;

 /**

  * A combo box model to display versions.

  *

  * @author Baptiste Wicht

  */

 public final class VersionsComboBoxModel extends DefaultComboBoxModel {

     private Mode mode;

     private ModuleContainer currentModule;

     private Updatable currentUpdatable;

     private final List<Version> versions = new ArrayList<Version>(5);

     /**

      * The mode of the model.

      */

     enum Mode {

         KERNEL,

         MODULE,

         UPDATABLE

     }

     @Override

     public Object getElementAt(int index) {

         return versions.get(index);

     }

     @Override

     public int getIndexOf(Object object) {

         Version version = (Version) object;

         return versions.indexOf(version);

     }

     @Override

     public int getSize() {

         return versions.size();

     }

     /**

      * Load kernel versions into the model.

      */

     public void loadKernelVersions() {

         if (mode != Mode.KERNEL) {

             mode = Mode.KERNEL;

             versions.clear();

             versions.addAll(Managers.getManager(IUpdateManager.class).getVersions(Managers.getCore()));

         }

     }

     /**

      * Load module versions into the model.

      *

      * @param value The module to load the versions from.

      */

     public void loadModuleVersions(ModuleContainer value) {

         if (mode != Mode.MODULE || !currentModule.equals(value)) {

             mode = Mode.MODULE;

             currentModule = value;

             versions.clear();

             versions.addAll(Managers.getManager(IUpdateManager.class).getVersions(currentModule));

         }

     }

     /**

      * Load module versions into the model.

      *

      * @param value The module to load the versions from.

      */

     public void loadUpdatableVersions(Updatable value) {

         if (mode != Mode.UPDATABLE || !currentUpdatable.equals(value)) {

             mode = Mode.UPDATABLE;

             currentUpdatable = value;

             versions.clear();

             versions.addAll(Managers.getManager(IUpdateManager.class).getVersions(currentUpdatable));

         }

     }

     /**

      * Return the selected version.

      *

      * @return The selected version.

      */

     public Version getSelectedVersion() {

         return (Version) getSelectedItem();

     }

 }