Import from DCARF SVN

include/pear/data/HTML_AJAX/js/clientPool.js

@@ -0,0 +1,56 @@
+HTML_AJAX_Client_Pool = function(maxClients, startingClients)
+{
+	this.maxClients = maxClients;
+	this._clients = [];
+	this._len = 0;
+	while (--startingClients > 0) {
+		this.addClient();
+	}
+}
+
+HTML_AJAX_Client_Pool.prototype = {
+	isEmpty: function()
+	{
+		return this._len == 0;
+	},
+	addClient: function()
+	{
+		if (this.maxClients != 0 && this._len > this.maxClients) {
+			return false;
+		}
+		var key = this._len++;
+		this._clients[key] = new HTML_AJAX_HttpClient();
+		return this._clients[key];
+	},
+	getClient: function ()
+	{
+		for (var i = 0; i < this._len; i++) {
+			if (!this._clients[i].callInProgress() && this._clients[i].callbackComplete) {
+				return this._clients[i];
+			}
+		}
+		var client = this.addClient();
+		if (client) {
+			return client;
+		}
+		return false;
+	},
+	removeClient: function (client)
+	{
+		for (var i = 0; i < this._len; i++) {
+			if (!this._clients[i] == client) {
+				this._clients.splice(i, 1);
+				return true;
+			}
+		}
+		return false;
+	},
+	clear: function ()
+	{
+		this._clients = [];
+		this._len = 0;
+	}
+};
+
+// create a default client pool with unlimited clients
+HTML_AJAX.clientPools['default'] = new HTML_AJAX_Client_Pool(0);