/**
 *    Javascript2.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.actions;

import javax.script.Invocable;

import org.expeditee.gui.Frame;
import org.expeditee.gui.MessageBay;
import org.expeditee.items.Item;

/**
 * Javascript parser.
 * Works differently to the other Javascript class in that it
 * parses a frame as a whole rather than parsing individual text items as separate statements
 * 
 * @author jts21
 */
public class Javascript2 extends ScriptBase {
	
    protected void init() {
	ERROR_FRAMESET = "JavascriptErrors";
	scriptEngine = scriptEngineManager.getEngineByMimeType("application/javascript");
	scriptEngine.put("invocable", (Invocable) scriptEngine);
    }
	
    public static void printJSFrame(Item item) {
	if(item.getChild() == null) {
	    // if the user clicked on the action without an item on their cursor
	    if(item.hasAction()) {
		boolean isThis = false;
		for(String s : item.getAction()) {
		    if(s.equalsIgnoreCase("printJSFrame")) {
			isThis = true;
			break;
		    }
		}
		if(isThis) {
		    System.out.println(new Javascript2(item.getParentOrCurrentFrame(), true));
		    return;
		}
	    }
	    MessageBay.warningMessage("Requires either an item with a link to a frame, or no item (will run the current frame)");
	} else {
	    System.out.println(new Javascript2(item.getChild(), true));
	}
    }
	
    public static void runJSFrame(Item item) throws Exception {
	if(item.getChild() == null) {
	    // if the user clicked on the action without an item on their cursor
	    if(item.hasAction()) {
		boolean isThis = false;
		for(String s : item.getAction()) {
		    if(s.equalsIgnoreCase("runJSFrame")) {
			isThis = true;
			break;
		    }
		}
		if(isThis) {
		    Javascript2.runFrameFollow(item.getParentOrCurrentFrame());
		    return;
		}
	    }
	    MessageBay.warningMessage("Requires either an item with a link to a frame, or no item (will run the current frame)");
	} else {
	    Javascript2.runFrameFollow(item.getChild());
	}
    }
	
	
    private static synchronized void runFrameFollow(Frame frame) throws Exception {
	Javascript2 js = new Javascript2(frame, true);
	js.runFrame(frame,true);	
    }
	

    private Javascript2(Frame frame, boolean followLinks) {
	super(frame,followLinks);
    }
    
}