/* * To change this template, choose Tools | Templates * and open the template in the editor. */ /* * SiteChooser.java * * Created on Sep 22, 2009, 5:02:41 PM */ package usda.weru.weps.location.chooser; import java.awt.Component; import java.awt.Dimension; import java.awt.Font; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.beans.Beans; import java.util.Arrays; import java.util.LinkedList; import javax.swing.ComboBoxModel; import javax.swing.DefaultComboBoxModel; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.ListCellRenderer; import org.apache.log4j.Logger; import usda.weru.util.WepsComboBox; import usda.weru.weps.location.Site; /** * * @author Joseph Levin */ public class SiteChooser extends javax.swing.JPanel { private static final Logger LOGGER = Logger.getLogger(SiteChooser.class); public static final String PROP_ROOT_SITE = "rootSite"; public static final String PROP_SELECTED_SITE = "selectedSite"; private Site c_rootSite; private ChainedComboBox c_rootComboBox; private Site c_selectedSite; /** Creates new form SiteChooser */ public SiteChooser() { initComponents(); c_rootComboBox = new ChainedComboBox(); add(c_rootComboBox); //c_rootComboBox.setEnabled(false); if(!Beans.isDesignTime()){ setRootSite(null); } } @Override public Dimension getPreferredSize() { Dimension temp = super.getPreferredSize(); return new Dimension(0, temp.height); } @Override public Dimension getMinimumSize() { Dimension temp = super.getMinimumSize(); return new Dimension(0, temp.height); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // //GEN-BEGIN:initComponents private void initComponents() { labelPanel = new javax.swing.JPanel(); labelPanel.setLayout(new java.awt.GridLayout(0, 1)); setFont(getFont().deriveFont(getFont().getStyle() & ~java.awt.Font.BOLD)); setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.Y_AXIS)); }// //GEN-END:initComponents public void setRootSite(Site root){ Site old = c_rootSite; c_rootSite = root; //TODO: update the display choices c_rootComboBox.setModel(new SiteComboBoxModel(getChildren(root))); c_rootComboBox.setSelectedIndex(-1); firePropertyChange(PROP_ROOT_SITE, old, c_rootSite); } public Site getRootSite(){ return c_rootSite; } public void setSelectedSite(Site site){ try{ if(site == null){ c_rootComboBox.setSelectedIndex(-1); return; } LinkedList chain = new LinkedList(); //need to build the chain from the site Site temp = site; while(temp != null){ if(temp.equals(c_rootSite)){ //don't go above the root site break; } chain.add(0, temp); temp = temp.getParent(); } //the top of the chain should be a child of the root site if(c_rootSite != null){ boolean isChild = false; for(Site child : c_rootSite.getSubDivisions()){ if(child.equals(chain.getFirst())){ isChild = true; break; } } if(!isChild){ LOGGER.warn("Unable to set site choice. " + chain.getFirst().getDisplayName() + " is not a division of " + c_rootSite.getDisplayName()); c_rootComboBox.setSelectedIndex(-1); return; } } ChainedComboBox combo = c_rootComboBox; for (Site choice : chain){ combo.setSelectedItem(choice); combo = combo.c_downStream; } if(combo != null){ combo.setSelectedItem(null); } } finally{ setSelectedSite2(site); } } private void setSelectedSite2(Site site){ Site old = c_selectedSite; c_selectedSite = site; firePropertyChange(PROP_SELECTED_SITE, old, c_selectedSite); } public Site getSelectedSite(){ return c_selectedSite; } private Site[] getChildren(Site site){ Site[] children; if(site != null){ children = site.getSubDivisions(); } else{ children = Site.countries(); } Arrays.sort(children); return children; } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JPanel labelPanel; // End of variables declaration//GEN-END:variables private class ChainedComboBox extends WepsComboBox implements ItemListener{ private ChainedComboBox c_downStream; private JLabel c_label; public ChainedComboBox(){ initilize(); } private void initilize(){ //create and add label c_label = new JLabel("Site"); labelPanel.add(c_label); setFont(getFont().deriveFont(Font.PLAIN)); addItemListener(this); setRenderer(getRendererInstance()); } @Override public void itemStateChanged(ItemEvent e) { //create the down stream Site selected = getSelectedSite(); Site[] children = selected != null ? getChildren(selected) : null; if(children != null && children.length > 0){ if(c_downStream == null){ addDownStream(); } c_downStream.setModel(new SiteComboBoxModel(children)); if(children.length == 1){ c_downStream.setSelectedIndex(0); } else{ c_downStream.setSelectedIndex(-1); } } else{ removeDownstream(); } setSelectedSite2(selected); } @Override public void setModel(ComboBoxModel aModel) { super.setModel(aModel); updateLabel(); } private void addDownStream(){ c_downStream = new ChainedComboBox(); SiteChooser.this.add(c_downStream); } public void removeDownstream(){ if(c_downStream != null){ c_downStream.removeDownstream(); //remove the label labelPanel.remove(c_downStream.c_label); SiteChooser.this.remove(c_downStream); c_downStream = null; } } private void updateLabel(){ try{ if(c_label == null){ return; } Object o = getModel().getSize() > 0 ? getModel().getElementAt(0) : null; Site firstSiteInModel = null; if(o instanceof Site){ firstSiteInModel = (Site) o; } String designation = firstSiteInModel != null ? firstSiteInModel.getDesgination().name() : "Site"; c_label.setText(designation + ":" ); } catch(Exception e){ LOGGER.warn("Unable to determine site label.", e); } } public Site getSelectedSite(){ if(getSelectedItem() instanceof Site){ return (Site) getSelectedItem(); } else{ return null; } } } private class SiteComboBoxModel extends DefaultComboBoxModel{ public SiteComboBoxModel(Site[] sites) { super(sites); } } private InternalCellRenderer c_renderer; private synchronized InternalCellRenderer getRendererInstance(){ if(c_renderer == null){ c_renderer = new InternalCellRenderer(); } return c_renderer; } private class InternalCellRenderer extends JLabel implements ListCellRenderer{ public InternalCellRenderer(){ setOpaque(true); } @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { setBackground(isSelected ? list.getSelectionBackground() : list.getBackground()); setForeground(isSelected ? list.getSelectionForeground(): list.getForeground()); if (value instanceof Site){ Site site = (Site) value; setText(" " + site.getDisplayName().toUpperCase()); } else{ setText(""); } return this; } } public JPanel getLabelPanel(){ return labelPanel; } }