Autosave function

admin/form.autosave.php

+<?php
+
+session_start();
+
+function isAjax() { 
+	return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && 
+	$_SERVER ['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'; 
+}
+
+function saveForm() {
+	$type = getMethod();
+	$id = ($type=='GET') ? $_GET['autosaveid'] : $_POST['autosaveid'];
+	$_SESSION[$id] = $_SERVER['QUERY_STRING'];
+	echo date('H:i | d/m/y',time());
+}
+
+function loadForm() {
+	$type = getMethod();
+	$id = ($type=='GET') ? $_GET['autosaveid'] : $_POST['autosaveid'];
+	if(isset($_SESSION[$id]))
+		echo $_SESSION[$id];
+}
+
+function isLoad() {
+	$type = getMethod();
+	if($type=='GET' and isset($_GET['autosave'])) return true;
+	elseif(isset($_POST['autosave'])) return true;
+	return false;
+}
+
+function getMethod() {
+	return $_SERVER['REQUEST_METHOD'];
+}
+
+if(isAjax()) {
+	if(isLoad()) loadForm();
+	else saveForm();
+}
+
+exit;
+
+?>

admin/index.php

 		<script language="javascript" type="text/javascript" src="<?php echo $conf->urlGelato;?>/admin/scripts/tools.js"></script>
 		<script language="javascript" type="text/javascript" src="<?php echo $conf->urlGelato;?>/admin/scripts/mootools.js"></script>
 		<script language="javascript" type="text/javascript" src="<?php echo $conf->urlGelato;?>/admin/scripts/slimbox.js"></script>
+		<script language="javascript" type="text/javascript" src="<?php echo $conf->urlGelato;?>/admin/scripts/prototype.js"></script>
+		<script language="javascript" type="text/javascript" src="<?php echo $conf->urlGelato;?>/admin/scripts/form.autosave.js"></script>
 		<script language="javascript" type="text/javascript">
 		<!--
 			function exit(el, path) {
 						}
 					}					
 ?>					
-					<form action="index.php" method="post" <?php echo (isset($_GET["new"]) && $_GET["new"]=="photo") ? "enctype=\"multipart/form-data\"" : ""?> name="frmAdd" class="newpost">
+					<form action="index.php" method="post" <?php echo (isset($_GET["new"]) && $_GET["new"]=="photo") ? "enctype=\"multipart/form-data\"" : ""?> name="frmAdd" id="autosave" class="newpost">
 						<fieldset>
+						<div id="update" style="display:none;" class="exito"></div><br />
 <?php
 							if ($isEdition) {
 ?>
 								</p>
 						</fieldset>
 					</form>
+					<div id="serialize"></div>
+					<script type="text/javascript" language="javascript" charset="utf-8">
+					// <![CDATA[
+						//id: formulario, id: info, options
+						new Form.autoSave('autosave','update',{});
+					// ]]>
+					</script>
 					
 					<div class="footer-box">&nbsp;</div>
 				</div>

admin/scripts/form.autosave.js

+/*  Autocompleter.editor, version 1.0: http://icebeat.bitacoras.com
+ *  (c) 2005 Daniel Mota aka IceBeat <daniel.mota@gmail.com>
+ *
+/*--------------------------------------------------------------------------*/
+Form.autoSave = Class.create();
+Form.autoSave.prototype = {
+	/*	
+	*	Inicializamos la clase y preparamos parametros
+	*/
+  initialize: function(element, update, options) {
+    this.element = $(element);
+    this.update = $(update);
+    this.options = $H({
+			url: 'form.autosave.php',
+			frequency: 30,
+			method: 'get',
+			msg: {
+			  loading:  'Filling form',
+			  loaded:   'Form filled',
+			  sending:  'Sending form',
+			  update:   'Form saved at: '
+			}
+		}).merge(options);
+		this.msg = this.options.msg;
+		this.message(this.msg.loading);
+    new Ajax.Request(this.options.url, { method: this.options.method, parameters:"autosave=true&autosaveid="+this.element.id, onSuccess: this.autoFill.bind(this) });
+  },
+  message: function(msg) {
+    Element.show(this.update);
+    this.update.innerHTML = msg;
+  },
+  send: function(element,value) {
+    this.message(this.msg.sending);
+    new Ajax.Request(this.options.url, { method: this.options.method, parameters:"autosaveid="+element.id+'&'+value, onSuccess: this.updateForm.bind(this) });
+  },
+  updateForm: function(resp) {
+    if(resp.responseText) {
+      this.message(this.msg.update+resp.responseText);
+    }
+  },
+  autoFill: function(resp) {
+    if(resp.responseText) {
+      this.message(this.msg.loaded);
+      Form.Unserialize(this.element,resp.responseText);
+    } else {
+      Element.hide(this.update);
+    }
+    new Form.Observer(this.element,this.options.frequency,this.send.bind(this));
+  }
+};
+
+Form.Unserialize = function(form,queryComponents) {
+  var elements = Form.getElements($(form));
+  var queryComponents = queryComponents.toQueryParams();
+  for (var i = 0; i < elements.length; i++) {
+    var element = elements[i];
+    var name = element.name;
+    if(queryComponents[name]) {
+      var method = element.tagName.toLowerCase();
+      var value = decodeURIComponent(queryComponents[name]);
+      Form.Element.Unserializers[method](element,value);
+    }
+  }
+};
+
+Form.Element.Unserializers = {
+  input: function(element,value) {
+    switch (element.type.toLowerCase()) {
+      case 'submit':
+      case 'hidden':
+      case 'password':
+      case 'text':
+        return Form.Element.Unserializers.textarea(element,value);
+      case 'checkbox':
+      case 'radio':
+        return Form.Element.Unserializers.inputSelector(element,value);
+    }
+    return false;
+  },
+
+  inputSelector: function(element,value) {
+    if (element.value == value)
+        element.checked = 'checked';
+  },
+
+  textarea: function(element,value) {
+    element.value = value;
+  },
+
+  select: function(element,value) {
+    for (var i = 0; i < element.length; i++) {
+      var opt = element.options[i];
+      if(opt.value == value || opt.text == value) 
+        opt.selected = 'selected';
+    }
+  }
+}

notice.txt

-== CREDITS==
+== CREDITS==
 Gelato developers and designers (in chronological order):
 
 Pedro Santana [ http://www.pecesama.net/weblog/ ]
 Jorge Condomí [ http://www.raven.com.ar/ ]
 Víctor de la Rocha [ http://blog.mis-algoritmos.com/ ]
 Victor Bracco [ http://www.vbracco.com.ar/blog/ ]
+Matt Heitzenroder [ http://www.globaljourney.net/ ]
 
 = COPYRIGHT NOTICES =
 This product includes code and libraries developed by third parties, which are governed by different licenses.  These components, and their licenses, are listed below.
 = PHP-gettext =
 Copyright (c) 2003 Danilo Segan, http://savannah.nongnu.org/projects/php-gettext/
 Copyright (c) 2005 Nico Kaiser
-PHP-gettext available under GNU General Public License.
+PHP-gettext available under GNU General Public License.
+
+= form.autosave =
+Copyright (c) Daniel Mota Leiva, http://icebeat.bitacoras.com/app/autosave/
+form.autosave available under Creative Commons Attribution-ShareAlike License.