1 files changed, 116 insertions, 0 deletions
diff --git a/static/functions/class_ajax.js b/static/functions/class_ajax.js
new file mode 100644
index 0000000..e1d4611
--- /dev/null
+++ b/static/functions/class_ajax.js
@@ -0,0 +1,116 @@
+/*
+	TODO: Further optimize serialize function
+	
+	UPDATE: We were forced to create an individual XHR for each request 
+	to avoid race conditions on slower browsers where the request would 
+	be overwritten before the callback triggered, and leave it hanging. 
+	This only happened in FF3.0 that we tested.
+
+	Example usage 1:
+	ajax.handle = function () {
+		$('#preview' + postid).raw().innerHTML = ajax.response;
+		$('#editbox' + postid).hide();	
+	}
+	ajax.post("ajax.php?action=preview","#form-id" + postid);
+	
+	Example usage 2:
+	ajax.handle = function() {
+		$('#quickpost').raw().value = "[quote="+username+"]" + ajax.response + "[/quote]";
+	}
+	ajax.get("?action=get_post&post=" + postid);
+	
+*/
+"use strict";
+var json = {
+	encode: function (object) {
+		try {
+			return JSON.stringify(object);
+		} catch (err) {
+			return '';
+		}
+	},
+	decode: function (string) {
+		if (window.JSON && JSON.parse) {
+			return JSON.parse(string);
+		} else {
+			return eval("(" + string + ")");
+			//return (new Function("return " + data))();
+		}
+	}
+};
+
+var ajax = {
+	get: function (url, callback) {
+		var req = (typeof(window.ActiveXObject) === 'undefined') ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
+		if (callback !== undefined) {
+			req.onreadystatechange = function () {
+				if (req.readyState !== 4 || req.status !== 200) {
+					return;
+				}
+				callback(req.responseText);
+			};
+		}
+		req.open("GET", url, true);
+		req.send(null);
+	},
+	post: function (url, data, callback) {
+		var req = isset(window.ActiveXObject) ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
+		var params = ajax.serialize(data);
+		if (callback !== undefined) {
+			req.onreadystatechange = function () {
+				if (req.readyState !== 4 || req.status !== 200) {
+					return;
+				}
+				callback(req.responseText);
+			};
+		}
+		req.open('POST', url, true);
+		req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
+		req.send(params);
+	},
+	serialize: function (data) {
+		var query = '',
+			elements;
+		if (is_array(data)) {
+			for (var key in data) {
+				query += key + '=' + encodeURIComponent(data[key]) + '&';
+			}
+		} else {
+			elements = document.getElementById(data).elements;
+			for (var i = 0, il = elements.length; i < il; i++) {
+				var element = elements[i];
+				if (!isset(element) || element.disabled || element.name === '') {
+					continue;
+				}
+				switch (element.type) {
+					case 'text':
+					case 'hidden':
+					case 'password':
+					case 'textarea':
+					case 'select-one':
+						query += element.name + '=' + encodeURIComponent(element.value) + '&';
+						break;
+					case 'select-multiple':
+						for (var j = 0, jl = element.options.length; j < jl; j++) {
+							var current = element.options[j];
+							if (current.selected) {
+								query += element.name + '=' + encodeURIComponent(current.value) + '&';
+							}
+						}
+						break;
+					case 'radio':
+						if (element.checked) {
+							query += element.name + '=' + encodeURIComponent(element.value) + '&';
+						}
+						break;
+					case 'checkbox':
+						if (element.checked) {
+							query += element.name + '=' + encodeURIComponent(element.value) + '&';
+						}
+						break;
+				}
+			}
+		}
+		return query.substr(0, query.length - 1);
+	}
+};