view java/src/uk/ac/qmul/eecs/ccmi/checkboxtree/CheckBoxTreeCellRenderer.java @ 8:ea7885bd9bff tip

fixed bug : render solid line as dotted/dashed when moving the stylus from dotted/dashed to solid

/*  
 CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
  
 Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)

 This program 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.

 This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package uk.ac.qmul.eecs.ccmi.checkboxtree;

import java.awt.Component;

import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;


/**
 * A tree cell renderer which renders {@code CheckBoxTreeNode} objects like a {@code JCheckBox}:
 * thick box (showing whether the node is selected or not) followed by a label (same label it would
 * appear with a default {@code DefaultTreeCellRenderer}.
 *
 */
@SuppressWarnings("serial")
public class CheckBoxTreeCellRenderer extends DefaultTreeCellRenderer {
	
	public CheckBoxTreeCellRenderer(){
		checkBox = new JCheckBox();
		checkBox.setBorder(BorderFactory.createLineBorder(this.getBorderSelectionColor()));
	}
	/**
	 * Returns the {@code Component} that the renderer uses to draw the value
	 * 
	 * @throws ClassCastException  if {@code value} is not an instance of {@code CheckoxTreeNode}
     * @see javax.swing.tree.TreeCellRenderer#getTreeCellRendererComponent(JTree, Object, boolean, boolean, boolean, int, boolean)
     * @return the {@code Component} that the renderer uses to draw the value
	 */
	@Override
	public Component getTreeCellRendererComponent(JTree tree,
            Object value,
            boolean selected,
            boolean expanded,
            boolean leaf,
            int row,
            boolean hasFocus){
		
		CheckBoxTreeNode treeNode = (CheckBoxTreeNode)value;  
		if(!treeNode.isSelectable())
			return super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);

		checkBox.setSelected(treeNode.isSelected());
		checkBox.setText(value.toString());
		if(selected){
			checkBox.setBackground(getBackgroundSelectionColor());
			checkBox.setBorderPainted(true);
		}else{
			checkBox.setBackground(getBackgroundNonSelectionColor());
			checkBox.setBorderPainted(false);
		}
		return checkBox;
	}

	private JCheckBox checkBox;
}