hostenv_dashboard.js

dojo与json创建无限级树的时候,当在父结点下添加了一个新结点,我怎么让父亲结点重新调用json加载一下子结点内容.

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.render.name = dojo.hostenv.name_ = "dashboard";

dojo.hostenv.println = function(/*String*/ message){
	// summary: Prints a message to the OS X console
	return alert(message); // null
}

dojo.hostenv.getXmlhttpObject = function(/*Object*/ kwArgs){
	// summary: Returns the appropriate transfer object for the call type
	if(widget.system && kwArgs){
		if((kwArgs.contentType && kwArgs.contentType.indexOf("text/") != 0) || (kwArgs.headers && kwArgs.headers["content-type"] && kwArgs.headers["content-type"].indexOf("text/") != 0)){
			var curl = new dojo.hostenv.CurlRequest;
			curl._save = true;
			return curl;
		}else if(kwArgs.method && kwArgs.method.toUpperCase() == "HEAD"){
			return new dojo.hostenv.CurlRequest;
		}else if(kwArgs.headers && kwArgs.header.referer){
			return new dojo.hostenv.CurlRequest; 
		}
	}
	return new XMLHttpRequest; // XMLHttpRequest
}

dojo.hostenv.CurlRequest = function(){
	// summary: Emulates the XMLHttpRequest Object
	this.onreadystatechange = null;
	this.readyState = 0;
	this.responseText = "";
	this.responseXML = null;
	this.status = 0;
	this.statusText = "";
	this._method = "";
	this._url = "";
	this._async = true;
	this._referrer = "";
	this._headers = [];
	this._save = false;
	this._responseHeader = "";
	this._responseHeaders = {};
	this._fileName = "";
	this._username = "";
	this._password = "";
}

dojo.hostenv.CurlRequest.prototype.open = function(/*String*/ method, /*URL*/ url, /*Boolean?*/ async, /*String?*/ username, /*String?*/ password){
	this._method = method;
	this._url = url;
	if(async){
		this._async = async;
	}
	if(username){
		this._username = username;
	}
	if(password){
		this._password = password;
	}
}

dojo.hostenv.CurlRequest.prototype.setRequestHeader = function(/*String*/ label, /*String*/ value){
	switch(label){
		case "Referer":
			this._referrer = value;
			break;
		case "content-type":
			break;
		default:
			this._headers.push(label + "=" + value);
			break;
	}
}

dojo.hostenv.CurlRequest.prototype.getAllResponseHeaders = function(){
	return this._responseHeader; // String
}

dojo.hostenv.CurlRequest.prototype.getResponseHeader = function(/*String*/ headerLabel){
	return this._responseHeaders[headerLabel]; // String
}

// -sS = Show only errors in errorString
// -i = Display headers with return
// -e = Referrer URI
// -H = Headers
// -d = data to be sent (forces POST)
// -G = forces GET
// -o = Writes to file (in the cache directory)
// -I = Only load headers
// -u = user:password
dojo.hostenv.CurlRequest.prototype.send = function(/*String*/ content){
	this.readyState = 1;
	if(this.onreadystatechange){
		this.onreadystatechange.call(this);
	}
	var query = {sS: ""};
	if(this._referrer){
		query.e = this._referrer;
	}
	if(this._headers.length){
		query.H = this._headers.join("&");
	}
	if(this._username){
		if(this._password){
			query.u = this._username + ":" + this._password;
		}else{
			query.u = this._username;
		}
	}
	if(content){
		query.d = this.content;
		if(this._method != "POST"){
			query.G = "";
		}
	}
	if(this._method == "HEAD"){
		query.I = "";
	}else{
		if(this._save){
			query.I = ""; // Get the headers in the initial query
		}else{
			query.i = "";
		}
	}

	var system = widget.system(dojo.hostenv.CurlRequest._formatCall(query, this._url), null);
	this.readyState = 2;
	if(this.onreadystatechange){
		this.onreadystatechange.call(this);
	}
	if(system.errorString){
		this.responseText = system.errorString;
		this.status = 0;
	}else{
		if(this._save){
			this._responseHeader = system.outputString;
		}else{
			var split = system.outputString.replace(/\r/g, "").split("\n\n", 2);
			this._responseHeader = split[0];
			this.responseText = split[1];
		}
		split = this._responseHeader.split("\n");
		this.statusText = split.shift();
		this.status = this.statusText.split(" ")[1];
		for(var i = 0, header; header = split[i]; i++){
			var header_split = header.split(": ", 2);
			this._responseHeaders[header_split[0]] = header_split[1];
		}
		if(this._save){
			widget.system("/bin/mkdir cache", null);
			// First, make a file name
			this._fileName = this._url.split("/").pop().replace(/\W/g, "");
			// Then, get its extension
			this._fileName += "." + this._responseHeaders["Content-Type"].replace(/[\r\n]/g, "").split("/").pop()
			delete query.I;
			query.o = "cache/" + this._fileName; // Tell it where to be saved.
			system = widget.system(dojo.hostenv.CurlRequest._formatCall(query, this._url), null);
			if(!system.errorString){
				this.responseText = "cache/" + this._fileName;
			}
		}else if(this._method == "HEAD"){
			this.responseText = this._responseHeader;
		}
	}

	this.readyState = 4;
	if(this.onreadystatechange){
		this.onreadystatechange.call(this);
	}
}

dojo.hostenv.CurlRequest._formatCall = function(query, url){
	var call = ["/usr/bin/curl"];
	for(var key in query){
		if(query[key] != ""){
			call.push("-" + key + " '" + query[key].replace(/'/g, "\'") + "'");
		}else{
			call.push("-" + key);
		}
	}
	call.push("'" + url.replace(/'/g, "\'") + "'");
	return call.join(" ");
}

dojo.hostenv.exit = function(){
	if(widget.system){
		widget.system("/bin/rm -rf cache/*", null);
	}
}