source: extensions/jiwigo/trunk/src/main/java/fr/mael/jiwigo/ui/mainframe/CategoriesTree.java @ 6821

package fr.mael.jiwigo.ui.mainframe;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.List;

import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import fr.mael.jiwigo.om.Category;
import fr.mael.jiwigo.service.CategoryService;
import fr.mael.jiwigo.transverse.util.Messages;
import fr.mael.jiwigo.transverse.util.Outil;

/**
   Copyright (c) 2010, Mael
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of jiwigo nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL Mael BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   
 * @author mael
 * Arbre des catégories
 */
public class CategoriesTree extends JPanel implements TreeSelectionListener, MouseListener, ActionListener {

    /**
     * Logger
     */
    public static final org.apache.commons.logging.Log LOG = org.apache.commons.logging.LogFactory
            .getLog(CategoriesTree.class);
    /**
     *  L'arbre
     */
    private JTree tree;
    /**
     * le menu permettant d'ajouter une catégorie
     */
    private JMenuItem menuAjouter;
    /**
     * Le menu permettant d'actualiser les catégories
     */
    private JMenuItem menuActualiser;
    /**
     * la racine du tree, qu'on n'affiche pas
     */
    private DefaultMutableTreeNode root = new DefaultMutableTreeNode("");
    /**
     * La catégorie selectionnée
     */
    private Category selectedCategory;

    /**
     * Constructeur
     */
    public CategoriesTree() {
        super(new BorderLayout());
        //creation de l'arbre
        createNodes(root);
        tree = new JTree(root);
        tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
        tree.addTreeSelectionListener(this);
        tree.setRootVisible(false);
        tree.addMouseListener(this);
        JScrollPane treeView = new JScrollPane(tree);
        Dimension minimumSize = new Dimension(100, 50);
        treeView.setMinimumSize(minimumSize);
        add(treeView, BorderLayout.CENTER);
    }

    /**
     * Methode qui permet de mettre à jour l'arbre
     */
    public void setUpUi() {
        root.removeAllChildren();
        createNodes(root);
        DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
        model.nodeStructureChanged(root);
    }

    /* (non-Javadoc)
     * @see javax.swing.event.TreeSelectionListener#valueChanged(javax.swing.event.TreeSelectionEvent)
     */
    public void valueChanged(TreeSelectionEvent e) {
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
        //
        if (node == null)
            return;
        Object catSelectionnee = node.getUserObject();
        Category category = (Category) catSelectionnee;
        MainFrame.imagesPanel.rafraichir(category.getIdentifiant(), false);
    }

    /**
     * Creation des noeuds
     * @param root noeud racine
     */
    private void createNodes(DefaultMutableTreeNode root) {
        DefaultMutableTreeNode category = null;
        try {
            List<Category> list = CategoryService.getInstance().construireArbre();
            for (Category cat : list) {
                if (cat.getCategoriesMeres().size() == 0) {
                    category = new DefaultMutableTreeNode(cat);
                    root.add(category);
                    recursiveNodeCreation(category, cat);
                }

            }
        } catch (Exception e) {
            LOG.error(Outil.getStackTrace(e));
            JOptionPane.showMessageDialog(null, Messages.getMessage("treeCreationError"), Messages.getMessage("error"),
                    JOptionPane.ERROR_MESSAGE);
        }

    }

    /**
     * Méthode récursive de creation des noeuds de l'arbre
     * @param categoryNode
     * @param category
     */
    private void recursiveNodeCreation(DefaultMutableTreeNode categoryNode, Category category) {
        for (Category cat : category.getCategoriesFilles()) {
            DefaultMutableTreeNode node = new DefaultMutableTreeNode(cat);
            categoryNode.add(node);
            recursiveNodeCreation(node, cat);
        }
    }

    @Override
    public void mouseClicked(MouseEvent arg0) {

    }

    @Override
    public void mouseEntered(MouseEvent arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mouseExited(MouseEvent arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void mousePressed(MouseEvent e) {
        int selRow = tree.getRowForLocation(e.getX(), e.getY());
        TreePath selPath = tree.getPathForLocation(e.getX(), e.getY());
        if (selRow != -1) {
            if (e.getButton() == 3) {
                JPopupMenu popup = new JPopupMenu();
                menuAjouter = new JMenuItem(Messages.getMessage("categories_add"));
                menuAjouter.addActionListener(this);
                popup.add(menuAjouter);
                menuActualiser = new JMenuItem(Messages.getMessage("categories_update"));
                menuActualiser.addActionListener(this);
                popup.add(menuActualiser);
                popup.show(tree, e.getX(), e.getY());
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) (selPath.getLastPathComponent());
                this.selectedCategory = (Category) node.getUserObject();
            }
        }

    }

    @Override
    public void mouseReleased(MouseEvent arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void actionPerformed(ActionEvent arg0) {
        if (arg0.getSource().equals(menuAjouter)) {
            String nomcategorie = JOptionPane.showInputDialog(null, Messages.getMessage("categories_enterName"),
                    Messages.getMessage("categories_add"), JOptionPane.INFORMATION_MESSAGE);
            if (!(nomcategorie == null) && !nomcategorie.equals("")) {
                if (CategoryService.getInstance().creer(nomcategorie, selectedCategory.getIdentifiant())) {
                    setUpUi();
                } else {
                    JOptionPane.showMessageDialog(null, Messages.getMessage("categoryCreationError"), Messages
                            .getMessage("error"), JOptionPane.ERROR_MESSAGE);

                }
            }
        } else if (arg0.getSource().equals(menuActualiser)) {
            setUpUi();
        }
    }
}