buffalo.js

LyBBS基于Struts1.3/Ajax的架构

				if (typeof(obj[i]) != typeof(obj[0])) {
					canBeArray = false;
					break;
				} else {
					if (typeof(obj[i]) == 'object') {
						if (obj[0][Buffalo.BOCLASS] != obj[i][Buffalo.BOCLASS]) {
							canBeArray = false;
							break;
						}
					} 
				}
			}
			if (canBeArray) {
				type+="[";	
				obj = obj[0];
			} else {
				break;
			}
		}
		if (type.indexOf("[") == -1) return "";
		var componentType = obj[Buffalo.BOCLASS] || typeof(obj);
		if (componentType == 'object') return "";
		return type+componentType;
	},
	
	isArray: function(obj) {
		return typeof(obj) == 'object' && obj.constructor == Array; 
	},
	
	doStructXML : function(data){
		var boType = data[Buffalo.BOCLASS] || "java.util.HashMap";
		var xml = "<map>\n";
		xml += "<type>" +boType+ "</type>\n";

		for (var i in data){
			if (data[i] != boType) { 
				if (typeof(data[i]) == "function") continue; /* the function shouldn't transfered. */
				xml += this.getParamXML(this.dataTypeOf(i),i)+"\n";
				xml += this.getParamXML(this.dataTypeOf(data[i]),data[i]) + "\n";
			}
		}
		xml += "</map>\n";
		return xml;
	},
	
	doNullXML : function() {
		return "<null></null>";
	},

	getParamXML: function(type,data){
		var xml;
		switch (type){
			case "date": xml = this.doDateXML(data); break;
			case "list": xml = this.doArrayXML(data); break;
			case "map": xml = this.doStructXML(data); break;
			case "boolean": xml = this.doBooleanXML(data); break;
			case "null": xml = this.doNullXML(); break;
			default: xml = this.doValueXML(type,data); break;
		}
		return xml;
	}
}

function dateToISO8609(date){
	var year = date.getYear();
	/* Fix for Y2K */
	if (year < 2000) {
		year += 1900;
	}
	var month = leadingZero(new String(date.getMonth()+1));
	var day = leadingZero(new String(date.getDate()));
	var time = leadingZero(new String(date.getHours())) + leadingZero(new String(date.getMinutes())) + leadingZero(new String(date.getSeconds()));

	var converted = year+month+day+"T"+time+"Z";
	return converted;
} 

function leadingZero(n){
	if (n.length==1) n = "0" + n;
	return n;
}
Buffalo.Reply = Class.create();
Buffalo.Reply.prototype = {
	initialize: function(xhr) {		
		this._isFault = false;
		this._type = "null";
		this._objects = [];
		this._objectNodes = [];
    this._source = xhr.responseText;

    var root = xhr.responseXML ? xhr.responseXML.documentElement :
              this.constructNodeFromXmlStringInIEOrFF(this._source);
    
		this.dataNode = root.firstChild;
		this._type = this._getType(this.dataNode);
	},
	
	constructNodeFromXmlStringInIEOrFF: function(xmlString) {
		var xmldoc = XmlDocument.create();
		xmldoc.async=false;
		xmldoc.loadXML(xmlString);
		return xmldoc.documentElement;
	}, 

	getType: function() { return this._type; },
	
	getResult : function() { return this.deserialize(this.dataNode); },
	
	isFault : function() { return (this._type == "fault"); },
	
	isNull: function() { return (this._type == "null"); },
	
	getSource : function() { return this._source; },
	
	deserialize: function(dataNode) {
		var ret;
		var type = this._getType(dataNode);
		switch (type) {
			case "boolean": ret = this.doBoolean(dataNode); break;
			case "date": ret = this.doDate(dataNode); break;
			case "double": ret = this.doDouble(dataNode); break;
			case "int": 
			case "long": 
				ret = this.doInt(dataNode);
				break;
			case "list": ret = this.doList(dataNode); break;
			case "map": ret = this.doMap(dataNode); break;
			case "null": ret = this.doNull(dataNode); break;
			case "ref": ret = this.doRef(dataNode); break;
			case "string": ret = this.doString(dataNode);break;
			case "xml": ret = this.doXML(dataNode); break;
			case "fault": ret = this.doFault(dataNode); break;
			default: ;
		}

		return ret;
	},
	
	_getType : function(dataNode) {
		return dataNode.tagName.toLowerCase();
	},
	
	getNodeText :function(dataNode) {
		if (dataNode.childNodes.length == 0) {
			return null;
		} else 
			return dataNode.firstChild.nodeValue;
	},

	doBoolean : function (dataNode) {
		var value = this.getNodeText(dataNode);
		return (value == "1");
	},
	
	doDate : function (dataNode) {

		var dateStr = this.getNodeText(dataNode);
		var year = parseInt(dateStr.substring(0,4),"10");
		var month = parseInt(dateStr.substring(4,6),"10") - 1;
		var day = parseInt(dateStr.substring(6,8),"10");
		var hour = parseInt(dateStr.substring(9,11),"10");
		var minute = parseInt(dateStr.substring(11,13),"10");
		var second = parseInt(dateStr.substring(13,15),"10");
		
		var d = new Date(year, month, day, hour, minute, second);
		return d;
	},
	
	doDouble : function (dataNode) {
		var value = this.getNodeText(dataNode);
		return parseFloat(value);
	},
	
	doInt: function (dataNode) {
		var value = this.getNodeText(dataNode);
		return parseInt(value);
	},
	
	doList: function (dataNode) {
		var arr = new Array();
		this._objects[this._objects.length] = arr;
    
    var children = dataNode.childNodes;
    arr[Buffalo.BOCLASS] = this.getNodeText(children[0]);
		for (var i=2; i < children.length; i++) {
			arr[arr.length] = this.deserialize(children[i]);
		}

		return arr;
	},

	doMap: function (dataNode) {
	
		var obj = new Object();
		this._objects[this._objects.length] = obj;

		var attrs = dataNode.childNodes;
		obj[Buffalo.BOCLASS] = this.getNodeText(attrs[0]);
		for (var i = 1; i < attrs.length; i+=2) {
			if (attrs[i+1].hasChildNodes() ) {
				obj[this.getNodeText(attrs[i])] = this.deserialize(attrs[i+1]);
			} else {
				obj[this.getNodeText(attrs[i])] = attrs[i+1].text;
			}
		}
		
		return obj;
	},
	
	doNull: function (dataNode) { return null;	},
	
	doRef: function (dataNode) {
		var value = this.getNodeText(dataNode);
		var idx = parseInt(value);
		
		return this._objects[idx];
	},
	
	doString: function (dataNode) {
		var value = this.getNodeText(dataNode);
		if (value == null) {
			return "";
		}
		return (value);
	},
	
	doXML : function (dataNode) {
		var value = this.getNodeText(dataNode);
		return unescape(value);
	},
	
	doFault : function (dataNode) {
		var code = this.getNodeText(dataNode.childNodes[1]);
		var msg = this.getNodeText(dataNode.childNodes[3]);
		var detail = this.deserialize(dataNode.childNodes[5]);
		return new Buffalo.Fault(code, msg, detail);
	}
}

Buffalo.Fault = Class.create();
Buffalo.Fault.prototype = {
	initialize: function(code, message, detail) {
		this.code = code;
		this.message = message;
		this.detail = detail;
	},
	toString: function() {
		return "Buffalo.Fault:[code=" + this.code + ", message=" + this.message + ", detail=" + this.detail+"]";
	}
}
Object.extend(Buffalo.prototype, {
	bindReply : function(service, params, bindElemId, options) {
		this.remoteCall(service, params, function(reply) {
			Buffalo.Bind.bind(bindElemId, reply.getResult(), options);
		})
	}
});

Buffalo.Bind = {
	bind : function(elementId, bindValue, options) {
		var elem = $(elementId);
		switch(elem.tagName) {
			case "INPUT": 
				switch (elem.type.toLowerCase()) {
					
					case "text": ;
					case "hidden": ;
					case "password": Buffalo.BindFactory.bindText(elem, bindValue); break;

					case "checkbox": ;
					case "radio": Buffalo.BindFactory.bindRadioOrCheckbox(elem, bindValue); break;
				}
				break;
			case "TEXTAREA":
				Buffalo.BindFactory.bindText(elem, bindValue);
				break; 
			case "TABLE": 
				Buffalo.BindFactory.bindTable(elem, bindValue);
				break; 
			case "SELECT": 
				Buffalo.BindFactory.bindSelect(elem, bindValue, options);
				break; 
			case "DIV":
			case "SPAN":
				elem.innerHTML = bindValue;
				break;
			case "FORM":
				Buffalo.Form.bindForm(elem, bindValue);
		}
	}
}

Buffalo.BindFactory = {
	reportError: function(elem, value, msg) { 
		throw "Data bind failed: "+msg;
	},
	
	bindText: function(elem, value) { 
		elem.value = value;
	},
	
	bindRadioOrCheckbox: function(elem, value) {
		elem.checked = Buffalo.BindFactory.checkTrue(value);
	},

	bindSelect : function(elem, value, options) {
		//TODO: Check the data type
		if (typeof(value) != "object" || value.constructor != Array) {
			this.reportError(elem,value,"Array Type Needed for binding select!");
		}
		while (elem.childNodes.length > 0) {
			elem.removeChild(elem.childNodes[0]);
		}
		
		// bind data
		for (var i = 0; i < value.length; i++) {
			
			var option = document.createElement("OPTION");
			
            if (options && options.binder) {
                options.binder(value, option, i);
            } else {
                var data = value[i];
    			if (typeof(data) != 'object') {
    				option.value = data;
    				option.text = data;
    			} else {
    				option.value = data[elem.getAttribute("jvalue")];
    				option.text = data[elem.getAttribute("jtext")];
    				if (Buffalo.BindFactory.checkTrue(data.selected)) {
    					option.selected = true;	
    				}
    			}
            }
  		
			elem.options.add(option);
		}
	},

	bindTable: function(elem, value) {
		var jHeight = parseInt(elem.getAttribute("jheight"));
		var dataHeader = [];
		var tBody = elem.getElementsByTagName("TBODY")[0];
		
		// clear the generated rows
		if (elem.getElementsByTagName("TBODY").length > 0) {
			while (tBody.rows.length > jHeight) {
					tBody.deleteRow(jHeight);
			}
		}

		if (jHeight == 0) { // if table is null, push the data to the tables.

			for (var x in value[0] ) {
				dataHeader[dataHeader.length] = x;
			}

			var hTr = elem.insertRow(elem.rows.length);
			for (var i = 0; i < dataHeader.length; i++) {
				var td = hTr.insertCell(hTr.cells.length);
				td.innerHTML = dataHeader[i];
			}
			
			for (var i = 0; i < value.length; i++) {
				var tr = elem.insertRow(elem.rows.length);
				var data = value[i];
				for (x in data ) {
					var td = tr.insertCell(tr.cells.length);
					td.innerHTML = data[x];
				}