source: trunk/src/org/expeditee/items/JSPanel.java@ 1506

/**
 *    JSPanel.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    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 org.expeditee.items;

import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.script.Invocable;
import javax.swing.JPanel;

public class JSPanel extends JPanel {

        private static final long serialVersionUID = 1L;
        
        private final Invocable invocable;
        private final String functionName;
        private boolean autoPaint;
        
        public JSPanel(Invocable invocable, String functionName, boolean autoPaint) {
                super();
                this.invocable = invocable;
                this.functionName = functionName;
                this.autoPaint = autoPaint;
                this.setIgnoreRepaint(true);
        }
        
        public JSPanel(Invocable invocable, String functionName) {
                this(invocable, functionName, true);
        }
        
        private boolean paintNext = false;
        @Override
        public void paintComponent(Graphics g) {
                if(!autoPaint && !paintNext)
                        return;
                paintNext = false;
                try {
                        invocable.invokeFunction(functionName, (Graphics2D) g);
                } catch (Exception e) {
                        e.printStackTrace();
                }
        }
        
        /**
         * Calls paintComponent()
         * The only way to cause a repaint if autoPaint is false
         */
        public void doPaint() {
                paintNext = true;
                this.repaint();
        }
        
        public void setAutoPaint(boolean autoPaint) {
                this.autoPaint = autoPaint;
        }
        
        public boolean getAutoPaint() {
                return autoPaint;
        }
        
        /**
         * Make some padding around the drawable area so we don't fight with the item outline
         */
        @Override
        public int getX() {
                return super.getX() + 5;
        }
        
        @Override
        public int getY() {
                return super.getY() + 5;
        }
        
        @Override
        public int getWidth() {
                return super.getWidth() - 10;
        }
        
        @Override
        public int getHeight() {
                return super.getHeight() - 10;
        }
}