/*
    * Copyright (c) 2003-2008 by Cosylab d. d.
    *
    * This file is part of CosyBeans-Common.
    *
    * CosyBeans-Common 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, or
    * (at your option) any later version.
   *
   * CosyBeans-Common 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 CosyBeans-Common.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package com.cosylab.gui.property.editors;
  
  import java.awt.Component;
  import java.awt.Font;
  import java.awt.GraphicsEnvironment;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  
  import javax.swing.DefaultComboBoxModel;
  import javax.swing.DefaultListCellRenderer;
  import javax.swing.JList;
  
  import com.cosylab.gui.components.SimpleButton;
  import com.cosylab.gui.components.SimpleComboBox;
  import com.cosylab.gui.components.util.CosyUIElements;
  import com.cosylab.gui.components.util.FontHelper;
  
  /**
   * A property editor for selecting Fonts using a combo box.
   * 
   * @author <a href="mailto:jernej.kamenik@cosylab.com">Jernej Kamenik</a>
   * @version $id$
   */
  public class FontEditor extends SimpleComboBox implements PropertyEditor {
  	private class FontEditorUI extends SimpleComboBox.DropComboBoxUI {
  		/**
  		 * @see com.cosylab.gui.components.SimpleComboBox.DropComboBoxUI#getDropButton()
  		 */
  		protected SimpleButton getDropButton() {
  			return extendButton;
  		}
  	}
  
  	private class FontRenderer extends DefaultListCellRenderer {
  		/**
  		 * Returns a component displaying the font's name by using font itself.
  		 * 
  		 * @param list
  		 *            containing values to be rendered
  		 * @param value
  		 *            to be rednered (Font)
  		 * @param index
  		 *            of value
  		 * @param isSelected
  		 *            true if renderer is selected
  		 * @param cellHasFocus
  		 *            tue if renderer has focus
  		 * 
  		 * @return a label displaying the Font
  		 */
  		public Component getListCellRendererComponent(JList list, Object value,
  				int index, boolean isSelected, boolean cellHasFocus) {
  			String name = (String) value;
  			super.getListCellRendererComponent(list, value, index, isSelected,
  					cellHasFocus);
  
  			// if (isSelected || !FontEditor.this.hasFocus())
  			// FontEditor.this.setFont(Font.decode(name));
  			setFont(Font.decode(name));
  
  			if (!isPopupVisible()) {
  				setBackground(FontEditor.this.getBackground());
  			}
  
  			return this;
  		}
  	}
  
  	/** Both drop-down selection and button for the dialog. */
  	public static final int MODE_BOTH = 0;
  
  	/** Only the drop-down selection */
  	public static final int MODE_COMBO = 1;
  
  	private Font value = null;
  
  	private SimpleButton extendButton = null;
  
  	private String[] fonts;
  
 	private int mode = -1;
 
 	/**
 	 * Creates a new FontEditor object.
 	 */
 	public FontEditor() {
 		super();
 		fonts = GraphicsEnvironment.getLocalGraphicsEnvironment()
 				.getAvailableFontFamilyNames();
 		setModel(new DefaultComboBoxModel(fonts));
 		setRenderer(new FontRenderer());
 		setEditable(false);
 		initialize();
 		setPropertyValue(FontHelper.getDefaultFont().getFamily());
 	}
 
 	/**
 	 * @see com.cosylab.gui.property.editors.PropertyEditor#setDescription(java.lang.String)
 	 */
 	public void setDescription(String description) {
 	}
 
 	/**
 	 * @see com.cosylab.gui.property.editors.PropertyEditor#getDescription()
 	 */
 	public String getDescription() {
 		return null;
 	}
 
 	/**
 	 * Sets the ComboBox mode. Overriden to implement FontEditorUI UI.
 	 * 
 	 * @param mode
 	 *            to be set.
 	 */
 	public void setMode(int mode) {
 		if (mode != this.mode) {
 			int old = this.mode;
 			this.mode = mode;
 
 			if (mode == MODE_BOTH) {
 				setUI(new FontEditorUI());
 			} else if (mode == MODE_COMBO) {
 				setStyle(SimpleComboBox.DROP_DOWN_STYLE);
 			}
 
 			firePropertyChange("mode", old, mode);
 		}
 	}
 
 	/**
 	 * @see com.cosylab.gui.property.editors.PropertyEditor#setPropertyValue(java.lang.Object)
 	 */
 	public boolean setPropertyValue(Object value) {
 		if (value instanceof Font) {
 			Font daNew = (Font) value;
 			Font old = this.value;
 			this.value = daNew;
 			setFont(daNew);
 			setSelectedItem(((Font) value).getFamily());
 			extendButton.repaint();
 			firePropertyChange(PROPERTY_VALUE_NAME, old, daNew);
 
 			return true;
 		}
 
 		return false;
 	}
 
 	/**
 	 * Returns the selected font.
 	 * 
 	 * @return the selected font.
 	 */
 	public Object getPropertyValue() {
 		return value;
 	}
 
 	private void initialize() {
 		setBorder(CosyUIElements.getPlainBorder(false));
 		addActionListener(new ActionListener() {
 			/**
 			 * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
 			 */
 			public void actionPerformed(ActionEvent e) {
 				setPropertyValue(Font.decode((String) getSelectedItem()));
 			}
 		});
 		initializeComboListeners();
 		extendButton = new SimpleButton("...");
 		extendButton.setBorder(CosyUIElements.getPlainBorder(true));
 		extendButton.setPressedBorder(null);
 		extendButton.setActionMode(SimpleButton.FAST_ACTION_MODE);
 		extendButton.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent e) {
 				// TODO implement fontChooser dialog
 				// Font c = FontChooser.showDialog(FontEditor.this, "Choose the
 				// desired font", value);
 				// setPropertyValue(c);
 			}
 		});
 		setMode(MODE_BOTH);
 	}
 
 	private void initializeComboListeners() {
 	}
 }
 
 /* __oOo__ */