enterprise/profiler.j2ee/src/org/netbeans/modules/profiler/j2ee/DirectorySelectorCombo.java - netbeans - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */

 package org.netbeans.modules.profiler.j2ee;

 import java.awt.Component;
 import java.awt.event.KeyEvent;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;
 import javax.swing.DefaultComboBoxModel;
 import javax.swing.DefaultListCellRenderer;
 import javax.swing.JFileChooser;
 import javax.swing.JList;
 import javax.swing.JSeparator;
 import javax.swing.ListCellRenderer;
 import javax.swing.SwingUtilities;
 import javax.swing.filechooser.FileFilter;
 import org.openide.util.NbBundle;

 /**
  *
  * @author  Jaroslav Bachorik
  */
 @NbBundle.Messages({
     "DirectorySelectorCombo_SelectActionString=Select action",
     "DirectorySelectorCombo_NoneString=<None>",
     "DirectorySelectorCombo_ActionString=Action...",
     "DirectorySelectorCombo_DialogCaption=Browse",
     "DirectorySelectorCombo_DialogFilter=Supported files"
 })
 public class DirectorySelectorCombo extends javax.swing.JPanel {
   public static final String PROPERTY_SELECTEDPATH = "selectedPath"; // NOI18N

   // <editor-fold defaultstate="collapsed" desc="Inner classes">
   private class SeparatedListCellRenderer implements ListCellRenderer {
     private ListCellRenderer delegate;

     public SeparatedListCellRenderer() {
       delegate = new DefaultListCellRenderer();
     }

     public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
       if (value instanceof JSeparator)
         return (Component)value;

       return delegate.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
     }
   }

   private abstract class ComboListElement {
     private Object value;
     private boolean asVolatile;

     public abstract void onSelection();

     public ComboListElement(Object object) {
       this(object, false);
     }

     public ComboListElement(Object object, boolean asVolatile) {
       value = object;
       this.asVolatile = asVolatile;
     }

     public void select() {
       onSelection();
       String oldVal = (propertyChangeTracker != null ? propertyChangeTracker.toString() : ""); // NOI18N
       String newVal = isValidSelection() ? (lastSelectedObject != null ? lastSelectedObject.toString() : "") : null; // NOI18N
       firePropertyChange(PROPERTY_SELECTEDPATH, oldVal, newVal);
       propertyChangeTracker = newVal;
     }
     public Object getValue() {
       return value;
     }
     public boolean isVolatile() {
       return asVolatile;
     }
     public String toString() {
       return value != null ? value.toString() : ""; // NOI18N
     }
     public boolean equals(Object other) {
       if (!(other instanceof ComboListElement))
         return false;
       if (value == null || other == null || ((ComboListElement)other).getValue() == null)
         return false;

       return (value.equals(((ComboListElement)other).getValue()));
     }
   }

   private class StringComboListElement extends ComboListElement {
     public StringComboListElement(Object object) {
       super(object, false);
     }

     public StringComboListElement(Object object, boolean asVolatile) {
       super(object, asVolatile);
     }

     public void onSelection() {
       lastSelectedObject = this;
       validSelection = true;
       if (lastSelectedObject != null) {
         fileMRU.setToolTipText(lastSelectedObject.toString());
       }
     };
   }
   // </editor-fold>

   private Object lastSelectedObject = null, propertyChangeTracker = null;
   private int lastKeypress = 0;

   private String actionText, welcomeText, noneText;
   private int itemCountLimit;
   private boolean showWelcome;
   private boolean validSelection;
   private String lastSelectedPath;
   private Set<String> supportedExtensions;

   /** Creates new form DirectorySelectorCombo */
   public DirectorySelectorCombo() {
     initComponents();
     initCustom();
   }

   /** 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.
    */
     // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
     private void initComponents() {

         fileMRU = new javax.swing.JComboBox();

         fileMRU.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
         fileMRU.setRenderer(new SeparatedListCellRenderer());
         fileMRU.addPopupMenuListener(new javax.swing.event.PopupMenuListener() {
             public void popupMenuWillBecomeVisible(javax.swing.event.PopupMenuEvent evt) {
                 fileMRUPopupMenuWillBecomeVisible(evt);
             }
             public void popupMenuWillBecomeInvisible(javax.swing.event.PopupMenuEvent evt) {
                 fileMRUPopupMenuWillBecomeInvisible(evt);
             }
             public void popupMenuCanceled(javax.swing.event.PopupMenuEvent evt) {
             }
         });
         fileMRU.addActionListener(new java.awt.event.ActionListener() {
             public void actionPerformed(java.awt.event.ActionEvent evt) {
                 fileMRUActionPerformed(evt);
             }
         });
         fileMRU.addKeyListener(new java.awt.event.KeyAdapter() {
             public void keyPressed(java.awt.event.KeyEvent evt) {
                 fileMRUKeyPressed(evt);
             }
         });

         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
         this.setLayout(layout);
         layout.setHorizontalGroup(
             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addComponent(fileMRU, 0, 207, Short.MAX_VALUE)
         );
         layout.setVerticalGroup(
             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addComponent(fileMRU, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
         );

         fileMRU.getAccessibleContext().setAccessibleName(org.openide.util.NbBundle.getMessage(DirectorySelectorCombo.class, "DirectorySelectorCombo.fileMRU.AccessibleContext.accessibleName")); // NOI18N
         fileMRU.getAccessibleContext().setAccessibleDescription(org.openide.util.NbBundle.getMessage(DirectorySelectorCombo.class, "DirectorySelectorCombo.fileMRU.AccessibleContext.accessibleDescription")); // NOI18N
     }// </editor-fold>//GEN-END:initComponents

   private void fileMRUPopupMenuWillBecomeVisible(javax.swing.event.PopupMenuEvent evt) {//GEN-FIRST:event_fileMRUPopupMenuWillBecomeVisible
     DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
     Collection mukls = new ArrayList();
     for(int i=0;i<model.getSize();i++) {
       if (!(model.getElementAt(i) instanceof ComboListElement))
         continue;
       if (((ComboListElement)model.getElementAt(i)).isVolatile())
         mukls.add(model.getElementAt(i));
     }
     for (Iterator it = mukls.iterator(); it.hasNext();) {
       Object elem = (Object) it.next();
       model.removeElement(elem);
       it.remove();
     }
   }//GEN-LAST:event_fileMRUPopupMenuWillBecomeVisible

   private void fileMRUPopupMenuWillBecomeInvisible(javax.swing.event.PopupMenuEvent evt) {//GEN-FIRST:event_fileMRUPopupMenuWillBecomeInvisible
     if (!(fileMRU.getSelectedItem() instanceof ComboListElement))
       return;

     SwingUtilities.invokeLater(new Runnable() {
       public void run() {
         ((ComboListElement)fileMRU.getSelectedItem()).select();
       }
     });
   }//GEN-LAST:event_fileMRUPopupMenuWillBecomeInvisible

   private void fileMRUKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_fileMRUKeyPressed
     switch(evt.getKeyCode()) {
       case KeyEvent.VK_UP:
         lastKeypress = 1;
         break;
       case KeyEvent.VK_DOWN:
         lastKeypress = 2;
         break;
       default:
         lastKeypress = 0;
     }
   }//GEN-LAST:event_fileMRUKeyPressed

   private void fileMRUActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileMRUActionPerformed
     if(fileMRU.getSelectedItem() == null)
       return;

     if (fileMRU.getSelectedItem() instanceof JSeparator) {
       int currentIndex = fileMRU.getSelectedIndex();
       if (lastKeypress == 1) {
         currentIndex--;
       } else if (lastKeypress == 2) {
         currentIndex++;
       }
       if (currentIndex < 0) {
         currentIndex = fileMRU.getItemCount() - 1;
       } else if (currentIndex >= fileMRU.getItemCount()) {
         currentIndex = 0;
       }

       fileMRU.setSelectedIndex(currentIndex);
     }
   }//GEN-LAST:event_fileMRUActionPerformed


     // Variables declaration - do not modify//GEN-BEGIN:variables
     private javax.swing.JComboBox fileMRU;
     // End of variables declaration//GEN-END:variables


   private void initCustom() {
     showWelcome = true;
     welcomeText = Bundle.DirectorySelectorCombo_SelectActionString();
     noneText = Bundle.DirectorySelectorCombo_NoneString();
     actionText = Bundle.DirectorySelectorCombo_ActionString();
     itemCountLimit = 2;
     supportedExtensions = new HashSet<String>();
   }

   private void changeModel() {
     DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
     model.removeAllElements();
     if (isShowWelcome()) {
       model.addElement(new StringComboListElement(getWelcomeText(), true));
     }
     model.addElement(new ComboListElement(getNoneText()) {
       public void onSelection() {
         validSelection = false;
       }
     });
     JSeparator separ = new JSeparator();
     model.addElement(separ);
     model.addElement(new ComboListElement(getActionText()) {
       public void onSelection() {
         validSelection = false;
         browseFiles();
       }
     });
   }

   private void browseFiles() {
     final JFileChooser chooser = new JFileChooser();

     chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);

     chooser.setDialogType(JFileChooser.OPEN_DIALOG);
     chooser.setDialogTitle(Bundle.DirectorySelectorCombo_DialogCaption());
     chooser.setSelectedFile(new File(lastSelectedPath));
     chooser.setFileFilter(new FileFilter() {
       public boolean accept(File f) {
         if (f.isDirectory())
           return true;
         String path = f.getAbsolutePath();
         String ext = path.substring(path.lastIndexOf('.') + 1); // NOI18N
         return supportedExtensions.contains(ext);
       }
       public String getDescription() {
         return Bundle.DirectorySelectorCombo_DialogFilter();
       }
     });
     final int returnVal = chooser.showOpenDialog(this);
     if (returnVal == JFileChooser.APPROVE_OPTION) {
       final File dir = chooser.getSelectedFile();
       ComboListElement newPath = addPath(dir.getAbsolutePath());
       fileMRU.setSelectedItem(newPath);
       newPath.select();
     } else if (returnVal == JFileChooser.CANCEL_OPTION) {
       fileMRU.setSelectedItem(lastSelectedObject);
     }
   }

   private ComboListElement addPath(String path) {
     DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
     ComboListElement newPath = new StringComboListElement(path);
     int index = model.getIndexOf(newPath);
     if (index == -1) {
       model.insertElementAt(newPath, 1);
     }
     if (model.getSize() > itemCountLimit + 3) {
       model.removeElementAt(model.getSize() - 3);
     }
     return newPath;
   }

   public String getActionText() {
     return actionText;
   }
   public void setActionText(String value) {
     actionText = value;
     changeModel();
   }

   public String getWelcomeText() {
     return welcomeText;
   }
   public void setWelcomeText(String value) {
     welcomeText = value;
     changeModel();
   }

   public String getNoneText() {
     return noneText;
   }
   public void setNoneText(String value) {
     noneText = value;
     changeModel();
   }

   public int getItemCountLimit() {
     return itemCountLimit;
   }
   public void setItemCountLimit(int value) {
     if (value < 2) {
       value = 2;
     }
     itemCountLimit = value;
   }

   public boolean isShowWelcome() {
     return showWelcome;
   }
   public void setShowWelcome(boolean value) {
     showWelcome = value;
   }

   public boolean isEditable() {
     return fileMRU.isEditable();
   }
   public void setEditable(boolean value) {
     fileMRU.setEditable(value);
   }

   public boolean isValidSelection() {
     return validSelection;
   }

   public void setSupportedExtensions(Set<String> supportedExtensions) {
     this.supportedExtensions.clear();
     this.supportedExtensions.addAll(supportedExtensions);
   }

   public Set<String> getSupportedExtensions() {
     return supportedExtensions;
   }

   public String getSelectedPath() {
     if (isValidSelection()) {
       lastSelectedPath = fileMRU.getSelectedItem().toString();
       return fileMRU.getSelectedItem().toString();
     } else {
       return ""; // TODO throw an exception
     }
   }

   public void setStartDir(final String path) {
     lastSelectedPath = path;
   }

   public String getStartDir() {
     return lastSelectedPath;
   }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the
	* "License"); you may not use this file except in compliance
	* with the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*/

	package org.netbeans.modules.profiler.j2ee;

	import java.awt.Component;
	import java.awt.event.KeyEvent;
	import java.io.File;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.HashSet;
	import java.util.Iterator;
	import java.util.Set;
	import javax.swing.DefaultComboBoxModel;
	import javax.swing.DefaultListCellRenderer;
	import javax.swing.JFileChooser;
	import javax.swing.JList;
	import javax.swing.JSeparator;
	import javax.swing.ListCellRenderer;
	import javax.swing.SwingUtilities;
	import javax.swing.filechooser.FileFilter;
	import org.openide.util.NbBundle;

	/**
	*
	* @author Jaroslav Bachorik
	*/
	@NbBundle.Messages({
	"DirectorySelectorCombo_SelectActionString=Select action",
	"DirectorySelectorCombo_NoneString=<None>",
	"DirectorySelectorCombo_ActionString=Action...",
	"DirectorySelectorCombo_DialogCaption=Browse",
	"DirectorySelectorCombo_DialogFilter=Supported files"
	})
	public class DirectorySelectorCombo extends javax.swing.JPanel {
	public static final String PROPERTY_SELECTEDPATH = "selectedPath"; // NOI18N

	// <editor-fold defaultstate="collapsed" desc="Inner classes">
	private class SeparatedListCellRenderer implements ListCellRenderer {
	private ListCellRenderer delegate;

	public SeparatedListCellRenderer() {
	delegate = new DefaultListCellRenderer();
	}

	public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
	if (value instanceof JSeparator)
	return (Component)value;

	return delegate.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
	}
	}

	private abstract class ComboListElement {
	private Object value;
	private boolean asVolatile;

	public abstract void onSelection();

	public ComboListElement(Object object) {
	this(object, false);
	}

	public ComboListElement(Object object, boolean asVolatile) {
	value = object;
	this.asVolatile = asVolatile;
	}

	public void select() {
	onSelection();
	String oldVal = (propertyChangeTracker != null ? propertyChangeTracker.toString() : ""); // NOI18N
	String newVal = isValidSelection() ? (lastSelectedObject != null ? lastSelectedObject.toString() : "") : null; // NOI18N
	firePropertyChange(PROPERTY_SELECTEDPATH, oldVal, newVal);
	propertyChangeTracker = newVal;
	}
	public Object getValue() {
	return value;
	}
	public boolean isVolatile() {
	return asVolatile;
	}
	public String toString() {
	return value != null ? value.toString() : ""; // NOI18N
	}
	public boolean equals(Object other) {
	if (!(other instanceof ComboListElement))
	return false;
	if (value == null \|\| other == null \|\| ((ComboListElement)other).getValue() == null)
	return false;

	return (value.equals(((ComboListElement)other).getValue()));
	}
	}

	private class StringComboListElement extends ComboListElement {
	public StringComboListElement(Object object) {
	super(object, false);
	}

	public StringComboListElement(Object object, boolean asVolatile) {
	super(object, asVolatile);
	}

	public void onSelection() {
	lastSelectedObject = this;
	validSelection = true;
	if (lastSelectedObject != null) {
	fileMRU.setToolTipText(lastSelectedObject.toString());
	}
	};
	}
	// </editor-fold>

	private Object lastSelectedObject = null, propertyChangeTracker = null;
	private int lastKeypress = 0;

	private String actionText, welcomeText, noneText;
	private int itemCountLimit;
	private boolean showWelcome;
	private boolean validSelection;
	private String lastSelectedPath;
	private Set<String> supportedExtensions;

	/** Creates new form DirectorySelectorCombo */
	public DirectorySelectorCombo() {
	initComponents();
	initCustom();
	}

	/** 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.
	*/
	// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
	private void initComponents() {

	fileMRU = new javax.swing.JComboBox();

	fileMRU.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
	fileMRU.setRenderer(new SeparatedListCellRenderer());
	fileMRU.addPopupMenuListener(new javax.swing.event.PopupMenuListener() {
	public void popupMenuWillBecomeVisible(javax.swing.event.PopupMenuEvent evt) {
	fileMRUPopupMenuWillBecomeVisible(evt);
	}
	public void popupMenuWillBecomeInvisible(javax.swing.event.PopupMenuEvent evt) {
	fileMRUPopupMenuWillBecomeInvisible(evt);
	}
	public void popupMenuCanceled(javax.swing.event.PopupMenuEvent evt) {
	}
	});
	fileMRU.addActionListener(new java.awt.event.ActionListener() {
	public void actionPerformed(java.awt.event.ActionEvent evt) {
	fileMRUActionPerformed(evt);
	}
	});
	fileMRU.addKeyListener(new java.awt.event.KeyAdapter() {
	public void keyPressed(java.awt.event.KeyEvent evt) {
	fileMRUKeyPressed(evt);
	}
	});

	javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
	this.setLayout(layout);
	layout.setHorizontalGroup(
	layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
	.addComponent(fileMRU, 0, 207, Short.MAX_VALUE)
	);
	layout.setVerticalGroup(
	layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
	.addComponent(fileMRU, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
	);

	fileMRU.getAccessibleContext().setAccessibleName(org.openide.util.NbBundle.getMessage(DirectorySelectorCombo.class, "DirectorySelectorCombo.fileMRU.AccessibleContext.accessibleName")); // NOI18N
	fileMRU.getAccessibleContext().setAccessibleDescription(org.openide.util.NbBundle.getMessage(DirectorySelectorCombo.class, "DirectorySelectorCombo.fileMRU.AccessibleContext.accessibleDescription")); // NOI18N
	}// </editor-fold>//GEN-END:initComponents

	private void fileMRUPopupMenuWillBecomeVisible(javax.swing.event.PopupMenuEvent evt) {//GEN-FIRST:event_fileMRUPopupMenuWillBecomeVisible
	DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
	Collection mukls = new ArrayList();
	for(int i=0;i<model.getSize();i++) {
	if (!(model.getElementAt(i) instanceof ComboListElement))
	continue;
	if (((ComboListElement)model.getElementAt(i)).isVolatile())
	mukls.add(model.getElementAt(i));
	}
	for (Iterator it = mukls.iterator(); it.hasNext();) {
	Object elem = (Object) it.next();
	model.removeElement(elem);
	it.remove();
	}
	}//GEN-LAST:event_fileMRUPopupMenuWillBecomeVisible

	private void fileMRUPopupMenuWillBecomeInvisible(javax.swing.event.PopupMenuEvent evt) {//GEN-FIRST:event_fileMRUPopupMenuWillBecomeInvisible
	if (!(fileMRU.getSelectedItem() instanceof ComboListElement))
	return;

	SwingUtilities.invokeLater(new Runnable() {
	public void run() {
	((ComboListElement)fileMRU.getSelectedItem()).select();
	}
	});
	}//GEN-LAST:event_fileMRUPopupMenuWillBecomeInvisible

	private void fileMRUKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_fileMRUKeyPressed
	switch(evt.getKeyCode()) {
	case KeyEvent.VK_UP:
	lastKeypress = 1;
	break;
	case KeyEvent.VK_DOWN:
	lastKeypress = 2;
	break;
	default:
	lastKeypress = 0;
	}
	}//GEN-LAST:event_fileMRUKeyPressed

	private void fileMRUActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileMRUActionPerformed
	if(fileMRU.getSelectedItem() == null)
	return;

	if (fileMRU.getSelectedItem() instanceof JSeparator) {
	int currentIndex = fileMRU.getSelectedIndex();
	if (lastKeypress == 1) {
	currentIndex--;
	} else if (lastKeypress == 2) {
	currentIndex++;
	}
	if (currentIndex < 0) {
	currentIndex = fileMRU.getItemCount() - 1;
	} else if (currentIndex >= fileMRU.getItemCount()) {
	currentIndex = 0;
	}

	fileMRU.setSelectedIndex(currentIndex);
	}
	}//GEN-LAST:event_fileMRUActionPerformed


	// Variables declaration - do not modify//GEN-BEGIN:variables
	private javax.swing.JComboBox fileMRU;
	// End of variables declaration//GEN-END:variables


	private void initCustom() {
	showWelcome = true;
	welcomeText = Bundle.DirectorySelectorCombo_SelectActionString();
	noneText = Bundle.DirectorySelectorCombo_NoneString();
	actionText = Bundle.DirectorySelectorCombo_ActionString();
	itemCountLimit = 2;
	supportedExtensions = new HashSet<String>();
	}

	private void changeModel() {
	DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
	model.removeAllElements();
	if (isShowWelcome()) {
	model.addElement(new StringComboListElement(getWelcomeText(), true));
	}
	model.addElement(new ComboListElement(getNoneText()) {
	public void onSelection() {
	validSelection = false;
	}
	});
	JSeparator separ = new JSeparator();
	model.addElement(separ);
	model.addElement(new ComboListElement(getActionText()) {
	public void onSelection() {
	validSelection = false;
	browseFiles();
	}
	});
	}

	private void browseFiles() {
	final JFileChooser chooser = new JFileChooser();

	chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);

	chooser.setDialogType(JFileChooser.OPEN_DIALOG);
	chooser.setDialogTitle(Bundle.DirectorySelectorCombo_DialogCaption());
	chooser.setSelectedFile(new File(lastSelectedPath));
	chooser.setFileFilter(new FileFilter() {
	public boolean accept(File f) {
	if (f.isDirectory())
	return true;
	String path = f.getAbsolutePath();
	String ext = path.substring(path.lastIndexOf('.') + 1); // NOI18N
	return supportedExtensions.contains(ext);
	}
	public String getDescription() {
	return Bundle.DirectorySelectorCombo_DialogFilter();
	}
	});
	final int returnVal = chooser.showOpenDialog(this);
	if (returnVal == JFileChooser.APPROVE_OPTION) {
	final File dir = chooser.getSelectedFile();
	ComboListElement newPath = addPath(dir.getAbsolutePath());
	fileMRU.setSelectedItem(newPath);
	newPath.select();
	} else if (returnVal == JFileChooser.CANCEL_OPTION) {
	fileMRU.setSelectedItem(lastSelectedObject);
	}
	}

	private ComboListElement addPath(String path) {
	DefaultComboBoxModel model = (DefaultComboBoxModel)fileMRU.getModel();
	ComboListElement newPath = new StringComboListElement(path);
	int index = model.getIndexOf(newPath);
	if (index == -1) {
	model.insertElementAt(newPath, 1);
	}
	if (model.getSize() > itemCountLimit + 3) {
	model.removeElementAt(model.getSize() - 3);
	}
	return newPath;
	}

	public String getActionText() {
	return actionText;
	}
	public void setActionText(String value) {
	actionText = value;
	changeModel();
	}

	public String getWelcomeText() {
	return welcomeText;
	}
	public void setWelcomeText(String value) {
	welcomeText = value;
	changeModel();
	}

	public String getNoneText() {
	return noneText;
	}
	public void setNoneText(String value) {
	noneText = value;
	changeModel();
	}

	public int getItemCountLimit() {
	return itemCountLimit;
	}
	public void setItemCountLimit(int value) {
	if (value < 2) {
	value = 2;
	}
	itemCountLimit = value;
	}

	public boolean isShowWelcome() {
	return showWelcome;
	}
	public void setShowWelcome(boolean value) {
	showWelcome = value;
	}

	public boolean isEditable() {
	return fileMRU.isEditable();
	}
	public void setEditable(boolean value) {
	fileMRU.setEditable(value);
	}

	public boolean isValidSelection() {
	return validSelection;
	}

	public void setSupportedExtensions(Set<String> supportedExtensions) {
	this.supportedExtensions.clear();
	this.supportedExtensions.addAll(supportedExtensions);
	}

	public Set<String> getSupportedExtensions() {
	return supportedExtensions;
	}

	public String getSelectedPath() {
	if (isValidSelection()) {
	lastSelectedPath = fileMRU.getSelectedItem().toString();
	return fileMRU.getSelectedItem().toString();
	} else {
	return ""; // TODO throw an exception
	}
	}

	public void setStartDir(final String path) {
	lastSelectedPath = path;
	}

	public String getStartDir() {
	return lastSelectedPath;
	}
	}