Application: gvSIG desktop

package com.iver.cit.gvsig.gui.preferencespage;

import java.awt.GridBagConstraints;

import java.awt.Insets;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.util.Iterator;

import javax.swing.ImageIcon;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JPanel;

import com.iver.andami.PluginServices;

import com.iver.andami.plugins.IExtension;

import com.iver.andami.preferences.AbstractPreferencePage;

import com.iver.andami.preferences.StoreException;

import com.iver.cit.gvsig.fmap.layers.order.DefaultOrderManager;

import com.iver.cit.gvsig.fmap.layers.order.OrderManager;

import com.iver.utiles.extensionPoints.ExtensionPoint;

import com.iver.utiles.extensionPoints.ExtensionPointsSingleton;

public class LayerOrderPage extends AbstractPreferencePage implements ItemListener {

        private static final long serialVersionUID = 1L;

        private ImageIcon icon = null;

        private boolean initialized = false;

        private JComboBox managerCombo = null;

        protected boolean changed = false;

        public void setChangesApplied() {

        }

        public LayerOrderPage() {

                super();

                setParentID(ViewPage.class.getName());

        }

        public void storeValues() throws StoreException {

                Object object = managerCombo.getSelectedItem();

                if (object instanceof OrderManager) {

                        OrderManager manager = (OrderManager) object;

                        IExtension ext = PluginServices.getExtension(com.iver.cit.gvsig.LayerOrderExtension.class);

                        com.iver.cit.gvsig.LayerOrderExtension orderExt = (com.iver.cit.gvsig.LayerOrderExtension) ext;

                        orderExt.setDefaultOrderManager(manager);

                }

                changed = false;

        }

        public String getID() {

                return getClass().getName();

        }

        public ImageIcon getIcon() {

                if (icon==null) {

//                        icon = new ImageIcon(this.getClass().getClassLoader().getResource("images/orderManager.png"));

                        icon = PluginServices.getIconTheme().get("layer-order-manager");

                }

                return icon;

        }

        public JPanel getPanel() {

                return this;

        }

        public String getTitle() {

                return PluginServices.getText(this, "Layer_loading_order");

        }

        public void initializeDefaults() {

        }

        public void initializeValues() {

                if (!initialized) {

                        initialized = true;

                        createUI();

                }

        }

        private void createUI() {

                JLabel label = new JLabel(PluginServices.getText(this, "Default_order_manager"));

                managerCombo = new JComboBox();

                try {

                        ExtensionPoint ep =

                                (ExtensionPoint) ExtensionPointsSingleton.getInstance().

                                get(DefaultOrderManager.getExtensionPointName());

                        IExtension ext = PluginServices.getExtension(com.iver.cit.gvsig.LayerOrderExtension.class);

                        com.iver.cit.gvsig.LayerOrderExtension orderExt = (com.iver.cit.gvsig.LayerOrderExtension) ext;

                        String defaultManager = null;

                        if (orderExt.existsDefaultOrderManager()) {

                                // only set the item if there is a configured default order manager,

                                // otherwise we would set DefaultOrderManager() as user preference

                                defaultManager = orderExt.getDefaultOrderManager().getCode();

                        }

                        Iterator iterator = ep.values().iterator();

                        while (iterator.hasNext()) {

                                Object object = iterator.next();

                                if (object instanceof OrderManager) {

                                        OrderManager manager = (OrderManager) object;

                                        managerCombo.addItem(object);

                                        if (defaultManager!=null

                                                        && manager.getCode().equals(defaultManager)) {

                                                managerCombo.setSelectedItem(object);

                                        }

                                }

                        }

                }

                catch (Exception ex) {

                        PluginServices.getLogger().warn("Error getting layer order managers", ex);

                }

                managerCombo.addItemListener(this);

                this.addComponent(label, managerCombo, GridBagConstraints.NONE, new Insets(8, 8, 8, 8));

        }

        public boolean isValueChanged() {

                return changed;

        }

        public void itemStateChanged(ItemEvent e) {

                changed = true;

        }

}