X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=ajax%2Fajax.js;h=21a993498c5e2c43220a0bc613e8eaa3e728d1f6;hb=582075e965a7df985aede0e088928c486fe9ce06;hp=257ae02b26582e7bc8733901aa26da30c463e5ea;hpb=4986837802a65ced713c2dac2ff7d80e42fd7807;p=jquery.git

diff --git a/ajax/ajax.js b/ajax/ajax.js
index 257ae02..21a9934 100644
--- a/ajax/ajax.js
+++ b/ajax/ajax.js
@@ -9,7 +9,6 @@ if ( typeof XMLHttpRequest == 'undefined' && typeof window.ActiveXObject == 'fun
 	};
 }
 
-//
 // Counter for holding the active query's
 $.xmlActive=0;
 
@@ -17,25 +16,11 @@ $.xml = function( type, url, data, ret ) {
 	var xml = new XMLHttpRequest();
 
 	if ( xml ) {
-		//
-		// Increase the query counter
-		$.xmlActive++;
-
-		//
-		// Show loader if needed
-		if ($.xmlCreate) {
-			$.xmlCreate();
-		}
-
-		//
 		// Open the socket
 		xml.open(type || "GET", url, true);
-
-		if ( data ) {
+		if ( data )
 			xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
-		}
 
-		//
 		// Set header so calling script knows that it's an XMLHttpRequest
 		xml.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
 
@@ -43,29 +28,38 @@ $.xml = function( type, url, data, ret ) {
 		 * a bug where XMLHttpReqeuest sends an incorrect Content-length
 		 * header. See Mozilla Bugzilla #246651.
 		 */
-		if ( xml.overrideMimeType ) {
+		if ( xml.overrideMimeType )
 			xml.setRequestHeader('Connection', 'close');
-		}
 
 		xml.onreadystatechange = function() {
-			if ( xml.readyState == 4 ) {
-				if ( ret ) { ret(xml); }
+			// Socket is openend
+			if ( xml.readyState == 1 ) {
+				// Increase counter
+				$.xmlActive++;
+
+				// Show loader if needed
+				if ( ($.xmlActive >= 1) && ($.xmlCreate) )
+					$.xmlCreate();
+			}
 
-				//
+			// Socket is closed and data is available
+			if ( xml.readyState == 4 ) {
 				// Decrease counter
 				$.xmlActive--;
 
-				//
 				// Hide loader if needed
-				if ($.xmlActive <= 0) {
-					if ($.xmlDestroy) {
-						$.xmlDestroy();
-					}
+				if ( ($.xmlActive <= 0) && ($.xmlDestroy) ) {
+					$.xmlDestroy();
+					$.xmlActive = 0
 				}
+
+				// Process result
+				if ( ret )
+					ret(xml);
 			}
 		};
 
-		xml.send(data);
+		xml.send(data)
 	}
 };
 
@@ -121,60 +115,209 @@ $.fn.load = function(a,o,f) {
 		f = o;
 		o = null;
 	}
-	if (o !== null) {
+	if (typeof o !== 'undefined') {
 		o = $.param(o);
 		t = "POST";
 	}
 	var self = this;
-	$.xml(t,a,o,function(h){
-		h = h.responseText;
-		self.html(h).find("script").each(function(){
-			try {
-				$.eval( this.text || this.textContent || this.innerHTML );
-			} catch(e){}
+	$.xml(t,a,o,function(res){
+		// Assign it and execute all scripts
+		self.html(res.responseText).find("script").each(function(){
+			try { eval( this.text || this.textContent || this.innerHTML || ""); } catch(e){}
 		});
-		if(f){f(h);}
+
+		// Callback function
+		if (f && f.constructor == Function)
+			f(res.responseText);
 	});
 	return this;
 };
 
 /**
- * function:	$.fn.formValues
- * usage: 		$('#frmLogin').formValues()
- * docs:			Gets the form values and creates a key=>value array of the found values (only for ENABLED elements!)
+ * Initial frontend function to submit form variables. This function
+ * is for registering coordinates, in the case of an image being used
+ * as the submit element, and sets up an event to listen and wait for
+ * a form submit click. It then calls any following chained functions
+ * to actually gather the variables and submit them.
+ *
+ * Usage examples, when used with getForm().putForm():
+ *
+ * 1. Just eval the results returned from the backend.
+ *    $('#form-id').form();
+ *
+ * 2. Render backend results directly to target ID (expects (x)HTML).
+ *    $('#form-id').form('#target-id');
+ *
+ * 3. Submit to backend URL (form action) then call this function.
+ *    $('#form-id').form(post_callback);
+ *
+ * 4. Load target ID with backend results then call a function.
+ *    $('#form-id').form('#target-id', null, post_callback);
+ *
+ * 5. Call a browser function (for validation) and then (optionally)
+ *    load server results to target ID.
+ *    $('#form-id').form('#target-id', pre_callback);
+ *
+ * 6. Call validation function first then load server results to
+ *    target ID and then also call a browser function.
+ *    $('#form-id').form('#target-id', pre_callback, post_callback);
+ *
+ * @param target   arg for the target id element to render
+ * @param pre_cb   callback function before submission
+ * @param post_cb  callback after any results are returned
+ * @return         "this" object
+ * @see            getForm(), putForm()
+ * @author         Mark Constable (markc@renta.net)
+ * @author         G. vd Hoven, Mike Alsup, Sam Collett
+ * @version        20060606
  */
-$.fn.formValues = function() {
-	var a = [];
-	this.find("input[@type='submit'],input[@type='hidden'],textarea,input[@checked],input[@type='password'],input[@type='text'],option[@selected]").filter(":enabled").each(function() {
-			var o = {};
-			o.name = this.name || this.id || this.parentNode.name || this.parentNode.id;
-			o.value = this.value;
-			a.push(o);
-		});
-	return a;
+$.fn.form = function(target, pre_cb, post_cb) {
+	$('input[@type="submit"],input[@type="image"]', this).click(function(ev){
+		this.form.clicked = this;
+		if (ev.offsetX != undefined) {
+			this.form.clicked_x = ev.offsetX;
+			this.form.clicked_y = ev.offsetY;
+		} else {
+			this.form.clicked_x = ev.pageX - this.offsetLeft;
+			this.form.clicked_y = ev.pageY - this.offsetTop;
+		}
+	});
+	this.submit(function(e){
+		e.preventDefault();
+		$(this).getForm().putForm(target, pre_cb, post_cb);
+		return this;
+  });
 };
 
 /**
- * function:	$.update
- * usage:		$.update('someJQueryObject', 'someurl', 'array');
- * docs:			Mimics the ajaxUpdater from prototype. Posts the key=>value array to the url and
- *					puts the results from that call in the jQuery object specified.
- *					--> If you set the blnNoEval to true, the script tags are NOT evaluated.
+ * This function gathers form element variables into an array that
+ * is embedded into the current "this" variable as "this.vars". It
+ * is normally used in conjunction with form() and putForm() but can
+ * be used standalone as long as an image is not used for submission.
+ *
+ * Standalone usage examples:
+ *
+ * 1. Gather form vars and return array to LHS variable.
+ *    var myform = $('#form-id').getForm();
+ *
+ * 2. Provide a serialized URL-ready string (after 1. above).
+ *    var mystring = $.param(myform.vars);
+ *
+ * 3. Gather form vars and send to RHS plugin via "this.vars".
+ *    $('#form-id').getForm().some_other_plugin();
+ *
+ * @return         "this" object
+ * @see            form(), putForm()
+ * @author         Mark Constable (markc@renta.net)
+ * @author         G. vd Hoven, Mike Alsup, Sam Collett
+ * @version        20060606
  */
-$.update = function(objElement, strURL, arrValues, fncCallback) {
-	$.post(strURL, arrValues, function(strHTML) {
-		//
-		// Update the element with the new HTML
-		objElement.html(strHTML);
-
-		//
-		// Evaluate the scripts
-		objElement.html(strHTML).find("script").each(function(){
-			try { $.eval( this.text || this.textContent || this.innerHTML ); } catch(e){}
-		});
+$.fn.getForm = function() {
+  var a = [];
+  var ok = {INPUT:true, TEXTAREA:true, OPTION:true};
+  $('*', this).each(function() {
+    if (this.disabled || this.type == 'reset' || (this.type == 'checkbox' && !this.checked) || (this.type == 'radio' && !this.checked))
+    	return;
+
+    if (this.type == 'submit' || this.type == 'image') {
+      if (this.form.clicked != this)
+      	return;
+
+      if (this.type == 'image') {
+        if (this.form.clicked_x) {
+					a.push({name: this.name+'_x', value: this.form.clicked_x});
+					a.push({name: this.name+'_y', value: this.form.clicked_y});
+					return;
+				}
+			}
+		}
 
-		//
-		// Callback handler
-		if (fncCallback) { fncCallback(); }
+		if (!ok[this.nodeName.toUpperCase()])
+			return;
+
+		var par = this.parentNode;
+		var p = par.nodeName.toUpperCase();
+		if ((p == 'SELECT' || p == 'OPTGROUP') && !this.selected)
+			return;
+
+		var n = this.name || par.name;
+		if (!n && p == 'OPTGROUP' && (par = par.parentNode))
+			n = par.name;
+
+		if (n == undefined)
+			return;
+
+		a.push({name: n, value: this.value});
 	});
-};
+
+	this.vars = a;
+
+	return this;
+}
+
+/**
+ * Final form submission plugin usually used in conjunction with
+ * form() and getForm(). If a second argument is a valid function
+ * then it will be called before the form vars are sent to the
+ * backend. If this pre-submit function returns exactly "false"
+ * then it will abort further processing otherwise the process
+ * will continue according to the first and third arguments.
+ *
+ * If the first argument is a function, and it exists, then the form
+ * values will be submitted and that callback function called. If
+ * the first argument is a string value then the "load()" plugin
+ * will be called which will populate the innerHTML of the indicated
+ * element and a callback will be called if there is third argument.
+ * If there are no arguments then the form values are submitted with
+ * an additional variable (evaljs=1) which indicates to the backend
+ * to to prepare the returned results for evaluation, ie; the result
+ * needs to be valid javascript all on a single line.
+ *
+ * Usage example:
+ *
+ * $.fn.myvars = function() {
+ *   this.vars = [];
+ *   for (var i in this) {
+ *     if (this[i] instanceof Function || this[i] == null) continue;
+ *     this.vars.push({name: i, value: this[i].length});
+ *   }
+ *   return this;
+ * }
+ *
+ * precb = function(vars) {
+ *   return confirm('Submit these values?\n\n'+$.param(vars));
+ * }
+ *
+ * $('*').myvars().putForm('#mytarget',precb,null,'myhandler.php');
+ *
+ * @param target   arg for the target id element to render
+ * @param pre_cb   callback function before submission
+ * @param post_cb  callback after any results are returned
+ * @param url      form action override
+ * @param mth      form method override
+ * @return         "this" object
+ * @see            form(), getForm(), load(), xml()
+ * @author         Mark Constable (markc@renta.net)
+ * @author         G. vd Hoven, Mike Alsup, Sam Collett
+ * @version        20060606
+ */
+$.fn.putForm = function(target, pre_cb, post_cb, url, mth) {
+	if (pre_cb && pre_cb.constructor == Function)
+		if (pre_cb(this.vars) === false)
+			return;
+
+	var f = this.get(0);
+	var url = url || f.action || '';
+	var mth = mth || f.method || 'POST';
+
+	if (target && target.constructor == Function) {
+		$.xml(mth, url, $.param(this.vars), target);
+	} else if (target && target.constructor == String) {
+		$(target).load(url, this.vars, post_cb);
+	} else {
+		this.vars.push({name: 'evaljs', value: 1});
+		$.xml(mth, url, $.param(this.vars), function(r) { eval(r.responseText); });
+	}
+
+	return this;
+}