svn commit: samba r9134 - in branches/SAMBA_4_0/swat/scripting: . client

[tridge at samba.org]

Author: tridge
Date: 2005-08-05 19:16:13 +0000 (Fri, 05 Aug 2005)
New Revision: 9134

WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=9134

Log:
added the client side js library code for handling remote 'AJAJ' calls
into our web server

Added:
   branches/SAMBA_4_0/swat/scripting/client/
   branches/SAMBA_4_0/swat/scripting/client/call.js
   branches/SAMBA_4_0/swat/scripting/client/encoder.js


Changeset:
Added: branches/SAMBA_4_0/swat/scripting/client/call.js
===================================================================
--- branches/SAMBA_4_0/swat/scripting/client/call.js	2005-08-05 19:11:26 UTC (rev 9133)
+++ branches/SAMBA_4_0/swat/scripting/client/call.js	2005-08-05 19:16:13 UTC (rev 9134)
@@ -0,0 +1,38 @@
+/*
+	client side js functions for remote calls into the server
+
+	Copyright Andrew Tridgell 2005
+	released under the GNU GPL Version 2 or later
+*/
+
+
+/*
+	usage:
+
+	  server_call(url, func, callback, ...);
+
+	'func' is a function name to call on the server
+	any additional arguments are passed to func() on the server
+
+	The callback() function is called with the returned
+	object. 'callback' may be null.
+*/
+function server_call(url, func, callback) {
+	var req = new XMLHttpRequest();
+	req.open("POST", url, true);
+	req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
+	var args = new Object();
+	var i;
+	for (i=3;i<arguments.length;i++) {
+		args[i-3] = arguments[i];
+	}
+	args.length = i-3;
+	req.send("func=" + func + "&args=" + encodeObject(args));
+	req.onreadystatechange = function() { 
+		if (4 == req.readyState && callback != null) {
+			var o = decodeObject(req.responseText);
+			callback(o.res);
+		}
+	}
+}
+

Added: branches/SAMBA_4_0/swat/scripting/client/encoder.js
===================================================================
--- branches/SAMBA_4_0/swat/scripting/client/encoder.js	2005-08-05 19:11:26 UTC (rev 9133)
+++ branches/SAMBA_4_0/swat/scripting/client/encoder.js	2005-08-05 19:16:13 UTC (rev 9134)
@@ -0,0 +1,84 @@
+/*
+	client side js functions for encoding/decoding objects into linear strings
+
+	Copyright Andrew Tridgell 2005
+	released under the GNU GPL Version 2 or later
+*/
+/*
+	usage:
+
+	  enc = encodeObject(obj);
+	  obj = decodeObject(enc);
+
+       The encoded format of the object is a string that is safe to
+       use in URLs
+
+       Note that only data elements are encoded, not functions
+*/
+
+function count_members(o) {
+	var i, count = 0;
+	for (i in o) { 
+		count++;  
+	}
+	return count;
+}
+
+function encodeObject(o) {
+	var i, r = count_members(o) + ":";
+	for (i in o) {
+		var t = typeof(o[i]);
+		if (t == 'object') {
+			r = r + "" + i + ":" + t + ":" + encodeObject(o[i]);
+		} else if (t == 'string') {
+			var s = encodeURIComponent(o[i]).replace(/%/g,'#');
+			r = r + "" + i + ":" + t + ":" + s + ":";
+		} else if (t == 'boolean' || t == 'number') {
+			r = r + "" + i + ":" + t + ":" + o[i] + ":";
+		} else if (t == 'undefined' || t == 'null') {
+			r = r + "" + i + ":" + t + ":";
+		} else {
+			alert("Unable to encode type " + t);
+		}
+	}
+	return r;
+}
+
+function decodeObjectArray(a) {
+	var o = new Object();
+	var i, count = a[a.i]; a.i++;
+	for (i=0;i<count;i++) {
+		var name  = a[a.i]; a.i++;
+		var type  = a[a.i]; a.i++;
+		var value;
+		if (type == 'object') {
+			o[name] = decodeObjectArray(a);
+		} else if (type == "string") {
+			value = decodeURIComponent(a[a.i].replace(/#/g,'%')); a.i++;
+			o[name] = value;
+		} else if (type == "boolean") {
+			value = a[a.i]; a.i++;
+			if (value == 'true') {
+				o[name] = true;
+			} else {
+				o[name] = false;
+			}
+		} else if (type == "undefined") {
+			o[name] = undefined;
+		} else if (type == "null") {
+			o[name] = null;
+		} else if (type == "number") {
+			value = a[a.i]; a.i++;
+			o[name] = value * 1;
+		} else {
+			alert("Unable to delinearise type " + t);
+		}
+	}
+	return o;
+}
+
+function decodeObject(str) {
+	var a = str.split(':');
+	a.i = 0;
+	return decodeObjectArray(a);
+}