// http://jquery.com/docs/ajax/
if ( typeof XMLHttpRequest == 'undefined' && typeof window.ActiveXObject == 'function') {
- var XMLHttpRequest = function() {
+ XMLHttpRequest = function() {
return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') >= 0) ?
"Microsoft.XMLHTTP" : "Msxml2.XMLHTTP");
};
}
-//
// Counter for holding the active query's
$.xmlActive=0;
$.xml = function( type, url, data, ret ) {
+ if ( !url ) {
+ ret = type.onComplete;
+ var onSuccess = type.onSuccess;
+ var onError = type.onError;
+ data = type.data;
+ url = type.url;
+ type = type.type;
+ }
+
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 )
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');
- /* Force "Connection: close" for Mozilla browsers to work around
+ /* Borrowed from Prototype:
+ * Force "Connection: close" for Mozilla browsers to work around
* a bug where XMLHttpReqeuest sends an incorrect Content-length
* header. See Mozilla Bugzilla #246651.
*/
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
+ }
+
+ if ( xml.status && xml.status >= 200 && xml.status < 300 ) {
+ if ( onSuccess )
+ onSuccess( xml );
+ } else if ( onError ) {
+ onError( xml );
}
+
+ // Process result
+ if ( ret )
+ ret(xml);
}
};
$.get = function( url, ret, type ) {
$.xml( "GET", url, null, function(r) {
- if ( ret ) ret( $.httpData(r,type) );
+ if ( ret ) { ret( $.httpData(r,type) ); }
});
};
$.post = function( url, data, ret, type ) {
$.xml( "POST", url, $.param(data), function(r) {
- if ( ret ) ret( $.httpData(r,type) );
+ if ( ret ) { ret( $.httpData(r,type) ); }
});
};
$.param = function(a) {
var s = [];
if (a && typeof a == 'object' && a.constructor == Array) {
- for ( var i=0; i < a.length; i++ )
- s[s.length] = a[i]['name'] + "=" + encodeURIComponent( a[i]['value'] );
+ for ( var i=0; i < a.length; i++ ) {
+ s[s.length] = a[i].name + "=" + encodeURIComponent( a[i].value );
+ }
} else {
- for ( var i in a )
- s[s.length] = i + "=" + encodeURIComponent( a[i] );
+ for ( var j in a ) {
+ s[s.length] = j + "=" + encodeURIComponent( a[j] );
+ }
}
return s.join("&");
};
// Arrrrghhhhhhhh!!
// I overwrote the event plugin's .load
// this won't happen again, I hope -John
- if ( a && a.constructor == Function )
+ if ( a && a.constructor == Function ) {
return this.bind("load", a);
+ }
var t = "GET";
if ( o && o.constructor == Function ) {
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){
- var 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 = new Array();
- this.find("input[@type='submit'],input[@type='hidden'],textarea,input[@checked],input[@type='password'],input[@type='text'],option[@selected]")
- .filter(":enabled").each(function() {
- 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;
+ }
+ }
+ }
+
+ 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;
- //
- // Callback handler
- if (fncCallback) fncCallback();
+ 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;
+}
git.asbjorn.biz / jquery.git / blobdiff