/**
 * AutoSourcing (Opensource ver)
 * @author gony (AjaxUI3 Team)
 */

var AutoSourcing = {
	div      : null,
	id       : "",
	timer    : null,
	regex    : null,
	strings  : [],
	skip     : false,
	handlers : {},

	init : function(format, enable) {
		var t = this;
		var n = navigator;
		var is_safari = (n.userAgent.indexOf("WebKit") > -1 && n.vendor.indexOf("Apple") > -1);

		this.div = document.createElement("div");
		this.div.className = (/MSIE|Gecko/.test(n.userAgent)&&!is_safari)?"autosourcing-stub":"autosourcing-stub-extra";

		// 임시 아이디 부여
		this.id = "autosourcing_tmp_"+(Math.random()*10000);
		
		// 형식을 정규식으로 만든다. 일단은 특수문자 처리 생략
		this.regex = new RegExp(format.replace("%id%", "(\\d+)"));
		
		// bind functions
		this.handlers.copy     = function(){ t.copy() };
		this.handlers.keydown  = function(evt){ t.keydown(evt) };
		this.handlers.keypress = function(evt){ t.keypress(evt) };

		// enable
		if(typeof enable == "undefined") enable = true;
		this.setEnable(enable);
	},
	setEnable : function(bool) {
		if (bool) {
			if (typeof document.body.oncopy != "undefined") {
				// Internet Explorer, Safari
				this.addEvent(document.body, "copy", this.handlers.copy);
			} else {
				this.addEvent(document, "keydown", this.handlers.keydown);
				this.addEvent(document, "keypress", this.handlers.keypress);
				this.addEvent(document, "contextmenu", this.handlers.copy);
			}
		} else {
			if (typeof document.body.oncopy != "undefined") {
				// Internet Explorer, Safari
				this.removeEvent(document.body, "copy", this.handlers.copy);
			} else {
				this.removeEvent(document, "keydown", this.handlers.keydown);
				this.removeEvent(document, "keypress", this.handlers.keypress);
				this.removeEvent(document, "contextmenu", this.handlers.copy);
			}
		}
	},
	getId : function(rng) {
		var range_s, range_e, par, id;
		
		// 시작노드에 대해서
		range_s = this.cloneRange(rng)
		range_s.collapse(true); // collapse to start point
		
		par = this.getParentElement(range_s);
		while(par && par.parentNode) {
			if (par.nodeType == 1 && this.regex.test(par.id)) {
				id = parseInt(RegExp.$1);
				return isNaN(id)?0:id;
			}
			par = par.parentNode;
		}
		
		// 시작노드에 없어? 그럼 끝노드에 대해서
		range_e = this.cloneRange(rng)
		range_e.collapse(false); // collapse to end point
		
		par = this.getParentElement(range_e);
		while(par && par.parentNode) {
			if (par.nodeType == 1 && this.regex.test(par.id)) {
				id = parseInt(RegExp.$1);
				return isNaN(id)?0:id;
			}
			par = par.parentNode;
		}
		
		return 0;
	},
	getSelection : function() {
		if (window.getSelection) {
			return window.getSelection();
		} else {
			return document.selection;
		}
	},
	getRange : function(selection) {
		selection = selection || this.getSelection();
	
		if (selection.getRangeAt) {
			return selection.getRangeAt(0);
		} else {
			return selection.createRange();
		}
	},
	cloneRange : function(rng) {
		rng = rng || this.getRange();
		
		if (rng.duplicate) {
			return rng.duplicate();
		} else {
			return rng.cloneRange();
		}
	},
	getParentElement : function(range) {
		var par = range.parentElement?range.parentElement():range.commonAncestorContainer;
		
		if (!par) return null;
		while(par.nodeType != 1) {
			par = par.parentNode;
		}
		
		return par;
	},
	setString : function(id, sTitle, sName, sLink) {
		var data = { name : sName, link : sLink, title : sTitle };
	
		this.strings[id] = this._template.replace(/\{(\w+)\}/g,function(m0,m1){
			return data[m1]?data[m1]:"";
		});
	},
	copy : function(evt) {
		var evt    = evt || window.event;
		var self   = this;
		var sel    = this.getSelection();
		var rng    = this.getRange(sel);
		var rngtmp = this.cloneRange(rng);
		var regcopy= /(?:p|<div)[^<>]+class\s*=\s*"?autosourcing\-stub(?:\-extra)?\-saved(?:\b|")/i;
		var regtag = /textarea|input/i;
		var id     = this.getId(rng);
		var node_rng;

		this.skip = false;
		clearTimeout(this.timer);

		if (id == 0) {
			try { this.div.parentNode.removeChild(this.div) }catch(e){};
			return;
		}

		if (evt && evt.srcElement && evt.srcElement.tagName.toUpperCase() == "A") return;
		
		this.div.innerHTML = this.strings[id];

		if (window.getSelection) {
			var html = (window.XMLSerializer)?new XMLSerializer().serializeToString(rng.cloneContents()):"";
			if (regcopy.test(html) || regtag.test(rng.commonAncestorContainer.tagName)) {
				this.skip = true;
				return;
			}
		
			rngtmp.collapse(false);
			rngtmp.insertNode(this.div);

			if (this.div.nextSibling) {
				rng.setEndBefore(this.div.nextSibling);
			} else {
				rng.setEndAfter(this.div);
			}

			sel.removeAllRanges();
			sel.addRange(rng);
		} else if (document.selection) {
			var body = document.body || document.getElementsByTagName("body")[0];
			var div  = document.createElement("div");
			var span = document.createElement("span");
			span.id = this.id;
			
			if (regcopy.test(rng.htmlText) || regtag.test(rng.parentElement().tagName)) {
				this.skip = true;
				return;
			}
			
			rngtmp.collapse(false);
			rngtmp.pasteHTML(span.outerHTML+'&nbsp;<a></a>'); // <a>는 노드를 나누기 위해 삽입
			//rngtmp.pasteHTML(span.outerHTML);

			span = document.getElementById(this.id);
			(span || rngtmp.parentElement()).insertAdjacentElement("afterEnd",this.div);

			do {
				rng.moveEnd("character", 1);
				(rngtmp = rng.duplicate()).collapse(false);
			} while(rngtmp.offsetLeft == 0);

			try { rng.select(); } catch(e){}
			
			// 블로그를 위한 패치 - 이래도 되는건가...
			if (span && span.parentNode) {
				span.parentNode.removeChild(span.nextSibling.nextSibling);
				span.parentNode.removeChild(span.nextSibling.nextSibling);
				span.parentNode.removeChild(span);
			}

			if (div.parentNode) {
				div.parentNode.removeChild(div);
			}
		}
		
		if (typeof document.body.oncopy != "undefined") {
			this.timer = setTimeout(function(){ self.aftercopy(rng); }, 1);
		}
	},
	aftercopy : function(rng) {
		if (this.skip) return;
		try {
			this.div.parentNode.removeChild(this.div);

			if (/WebKit/.test(navigator.userAgent)) {
				var sel = this.getSelection();
				sel.removeAllRanges();
				sel.addRange(rng);
			}
		} catch(e) { }
	},
	keydown : function(e) {
		if ((e.ctrlKey || e.metaKey) && e.keyCode == 67) {
			this.copy();
		}
	},
	keypress : function(e) {
		if ((e.ctrlKey || e.metaKey) && e.keyCode == 67) {
			var t = this;
			this.timer = setTimeout(function(){ t.aftercopy(); }, 10);
		}
    },
	mousedown : function(e) {
	},
	setTemplate : function(html) {
		this._template = html;
	},
	addEvent : function(obj, sEvent, pFunc) {
		function addEventIE(obj, sEvent, pFunc) {
			obj.attachEvent("on"+sEvent, pFunc);
		}
		
		function addEventFF(obj, sEvent, pFunc) {
			obj.addEventListener(sEvent, pFunc, false);
		}
		
		if (obj.attachEvent) this.addEvent = addEventIE;
		else this.addEvent = addEventFF;
		
		this.addEvent(obj, sEvent, pFunc);
	},
	removeEvent : function(obj, sEvent, pFunc) {
		function removeEventIE(obj, sEvent, pFunc) {
			obj.detachEvent("on"+sEvent, pFunc);
		}
		
		function removeEventFF(obj, sEvent, pFunc) {
			obj.removeEventListener(sEvent, pFunc, false);
		}
		
		if (obj.detachEvent) this.removeEvent = removeEventIE;
		else this.removeEvent = removeEventFF;
	}
}