f@0: /*  
f@0:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
f@0:   
f@0:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
f@0: 
f@0:  This program is free software: you can redistribute it and/or modify
f@0:  it under the terms of the GNU General Public License as published by
f@0:  the Free Software Foundation, either version 3 of the License, or
f@0:  (at your option) any later version.
f@0: 
f@0:  This program is distributed in the hope that it will be useful,
f@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
f@0:  GNU General Public License for more details.
f@0: 
f@0:  You should have received a copy of the GNU General Public License
f@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@0: */
f@0: package uk.ac.qmul.eecs.ccmi.checkboxtree;
f@0: 
f@0: import java.awt.Component;
f@0: 
f@0: import javax.swing.BorderFactory;
f@0: import javax.swing.JCheckBox;
f@0: import javax.swing.JTree;
f@0: import javax.swing.tree.DefaultTreeCellRenderer;
f@0: 
f@0: 
f@0: /**
f@0:  * A tree cell renderer which renders {@code CheckBoxTreeNode} objects like a {@code JCheckBox}:
f@0:  * thick box (showing whether the node is selected or not) followed by a label (same label it would
f@0:  * appear with a default {@code DefaultTreeCellRenderer}.
f@0:  *
f@0:  */
f@0: @SuppressWarnings("serial")
f@0: public class CheckBoxTreeCellRenderer extends DefaultTreeCellRenderer {
f@0: 	
f@0: 	public CheckBoxTreeCellRenderer(){
f@0: 		checkBox = new JCheckBox();
f@0: 		checkBox.setBorder(BorderFactory.createLineBorder(this.getBorderSelectionColor()));
f@0: 	}
f@0: 	/**
f@0: 	 * Returns the {@code Component} that the renderer uses to draw the value
f@0: 	 * 
f@0: 	 * @throws ClassCastException  if {@code value} is not an instance of {@code CheckoxTreeNode}
f@0:      * @see javax.swing.tree.TreeCellRenderer#getTreeCellRendererComponent(JTree, Object, boolean, boolean, boolean, int, boolean)
f@0:      * @return the {@code Component} that the renderer uses to draw the value
f@0: 	 */
f@0: 	@Override
f@0: 	public Component getTreeCellRendererComponent(JTree tree,
f@0:             Object value,
f@0:             boolean selected,
f@0:             boolean expanded,
f@0:             boolean leaf,
f@0:             int row,
f@0:             boolean hasFocus){
f@0: 		
f@0: 		CheckBoxTreeNode treeNode = (CheckBoxTreeNode)value;  
f@0: 		if(!treeNode.isSelectable())
f@0: 			return super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
f@0: 
f@0: 		checkBox.setSelected(treeNode.isSelected());
f@0: 		checkBox.setText(value.toString());
f@0: 		if(selected){
f@0: 			checkBox.setBackground(getBackgroundSelectionColor());
f@0: 			checkBox.setBorderPainted(true);
f@0: 		}else{
f@0: 			checkBox.setBackground(getBackgroundNonSelectionColor());
f@0: 			checkBox.setBorderPainted(false);
f@0: 		}
f@0: 		return checkBox;
f@0: 	}
f@0: 
f@0: 	private JCheckBox checkBox;
f@0: }