o2.widget = o2.widget || {};
o2.widget.JsonParse = new Class({
	Implements: [Options, Events],
	options: {
		"topkey": "JSON"
	},
	initialize: function(json, jsonObjectNode, jsonStringNode, options){
		this.setOptions(options);
		this.json = json;
		this.jsonObjectNode = jsonObjectNode;
		this.jsonStringNode = jsonStringNode;
		this.stopParseJson = false;
	},
	load: function(){
		this.jsonString = JSON.encode(this.json);
		if (this.jsonStringNode) this.jsonStringNode.set("text", JSON.format(this.json));
		if (this.jsonObjectNode) this.loadObjectTree();
	},
	loadObjectTree: function(){
		if (this.objectTree){
			this.objectTree.node.destroy();
			this.objectTree = null;
		} 
		o2.require("o2.widget.Tree", function(){
			this.objectTree = new o2.widget.Tree(this.jsonObjectNode, {"style": "jsonview", "text": "text",
				"onQueryExpand": function(node){
					if (node.firstChild){
                        if (node.firstChild.options.text==="loadding..."){
                            node.firstChild.destroy();
                            var data = node.options.value;
                            var level = node.options.level+1;
                            switch (typeOf(data)){
								case "object":
                                    for (i in data) this.parseJsonObject(level, node, i, i, data[i], false);
									break;
								case "array":
                                    data.each(function(v, i){
                                        this.parseJsonObject(level, node, i, i, v, false);
									}.bind(this));
									break;
							}


						}
					}
				}.bind(this)
			});
			this.objectTree.load();

            var jsonStr = JSON.stringify(this.json,null,2);
			var str = this.parseJsonObject(0, this.objectTree, "",  this.options.topkey || "JSON", this.json, true);
			// var jsonStr = str.substring(0, str.length-2);


			if (!this.stopParseJson){
				if (this.jsonStringNode) this.jsonStringNode.set("text", jsonStr);
			}else{
				this.stopParseJson = false;
			}
			
		}.bind(this));
	},
	
	parseJsonObject: function(level, treeNode, title, p, v, expand){
		if (this.stopParseJson){
		//	alert(this.stopParseJson);
			return false;
		}
		var o = {
			"expand": expand,
			"title": "",
			"text": "",
			"action": "",
			"icon": "",
			"value": v,
			"level": level
		};
		var tab = "";
		for (var i=0; i<level; i++) tab+="  ";
		var title = title;
		if (title) title="\""+title+"\": ";
		var jsonStr = "";
		var nextLevel = level+1;

		switch (typeOf(v)){
			case "object":
				o.text = p;
				o.icon = "object.png";
				var node = treeNode.appendChild(o);

								
				var jsonStrBegin = tab+title+"{";
				var jsonStrEnd = tab+"}";

                if (expand){
                    for (i in v) jsonStr += this.parseJsonObject(nextLevel, node, i, i, v[i], false);
				}else{
                    if (Object.keys(v).length) node.appendChild({ "expand": false, "text": "loadding..."});
				}

				jsonStr = jsonStrBegin+"\n"+jsonStr.substring(0, jsonStr.length-2)+"\n"+jsonStrEnd+",\n";
				break;
				
			case "array":
				o.text = p;
				o.icon = "array.png";
				var node = treeNode.appendChild(o);
				
				var jsonStrBegin = tab+title+"[";
				var jsonStrEnd = tab+"]";

                if (expand){
                    v.each(function(item, idx){
                        jsonStr += this.parseJsonObject(nextLevel, node, "", "["+idx+"]", item, false);
                    }.bind(this));
                }else{
                    if (v.length) node.appendChild({ "expand": false, "text": "loadding..."});
                }

				jsonStr = jsonStrBegin+"\n"+jsonStr.substring(0, jsonStr.length-2)+"\n"+jsonStrEnd+",\n";
				break;
				
			case "string":
				jsonStr += tab+title+"\""+v+"\",\n";
				o.text = p + " : \""+v+"\"";
				o.icon = "string.png";
				var node = treeNode.appendChild(o);
				break;
			case "date":	
				jsonStr += tab+title+"\""+v+"\",\n";
				o.text = p + " : \""+v+"\"";
				o.icon = "string.png";
				var node = treeNode.appendChild(o);
				break;
            case "number":
                jsonStr += tab+title+""+v+",\n";
                o.text = p + " : "+v+"";
                o.icon = "string.png";
                var node = treeNode.appendChild(o);
                break;
			default: 
				jsonStr += tab+title+v+",\n";
				o.text = p + " : "+v;
				o.icon = "string.png";
				var node = treeNode.appendChild(o);
		}
		return jsonStr;
	}
});