/**
* Original author: Mathis Moder (mathis.moder at gmail.com)
* Date: 07/19/2008
*/
var layers = app.project.activeItem.layers;
var out = filePutDialog("Select an Output File", "texts_"+app.project.activeItem.name+".xml", "xml");

if (out == null){
	alert("No output file selected. Aborting."); 
} else {

out.open("w");
	out.writeln('<?xml version="1.0" encoding="UTF-8"?>');
	out.writeln('<tags>');
	out.writeln('<!-- source="'+app.project.activeItem.name+'"-->');

	var textIndex = 0;
	
	for(var i=1;i<=layers.length; i++){
		var layer = layers[i];
		if (layer.sourceText == null) continue;
		var sourceText = layer.property('Source Text').value;	
		writeMetaTag(layer, "text"+textIndex, {fade:"in", text:sourceText.text}, layer.inPoint);
		writeMetaTag(layer, "text"+textIndex, {fade:"out", text:sourceText.text}, layer.outPoint);
		textIndex++;
	}
	out.write("</tags>");
	out.close();
}

function writeMetaTag(layer, name, parameters, time){
	if (out != null){
		// position is lower left corner of textfield
		parameters.position = layer.property('position').valueAtTime(time,true);
		time = Math.round(time*1000); 
		out.writeln('<metatag event="onCuePoint" overwrite="true">');
		out.writeln("<timestamp>" + time + "</timestamp>");
		out.writeln("<name>" + name + "</name>");
		out.writeln("<type>event</type>");
		out.writeln("<parameters>");
		for (var j in parameters){
				out.write("<"+j+">");
				out.write(parameters[j]);
				out.writeln("</"+j+">");
		}
		out.writeln("</parameters>");
	}
}