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/**
* @author Stéphane Roucheray
* @extends jQuery
*/
jQuery.fn.dynamicForm = function (plusElmnt, minusElmnt, options){
var source = jQuery(this),
minus = jQuery(minusElmnt),
plus = jQuery(plusElmnt),
template = source.clone(true),
fieldId = 0,
formFields = "input, checkbox, select, textarea",
insertBefore = source.next(),
clones = [],
defaults = {
duration:1000
};
// Extend default options with those provided
options = $.extend(defaults, options);
isPlusDescendentOfTemplate = source.find("*").filter(function(){
return this == plus.get(0);
});
isPlusDescendentOfTemplate = isPlusDescendentOfTemplate.length > 0 ? true : false;
function normalizeElmnt(elmnt){
elmnt.find(formFields).each(function(){
var nameAttr = jQuery(this).attr("name"),
idAttr = jQuery(this).attr("id");
/* Normalize field name attributes */
if (!nameAttr) {
jQuery(this).attr("name", "field" + fieldId + "[]");
}
if (!/\[\]$/.exec(nameAttr)) {
jQuery(this).attr("name", nameAttr + "[]");
}
/* Normalize field id attributes */
if (idAttr) {
/* Normalize attached label */
jQuery("label[for='"+idAttr+"']").each(function(){
jQuery(this).attr("for", idAttr + fieldId);
});
jQuery(this).attr("id", idAttr + fieldId);
}
fieldId++;
});
};
/* Hide minus element */
minus.hide();
/* If plus element is within the template */
if (isPlusDescendentOfTemplate) {
function clickOnPlus(event){
var clone,
currentClone = clones[clones.length -1] || source;
event.preventDefault();
/* On first add, normalize source */
if (clones.length == 0) {
normalizeElmnt(source);
currentClone.find(minusElmnt).hide();
currentClone.find(plusElmnt).hide();
}else{
currentClone.find(plusElmnt).hide();
}
/* Clone template and normalize it */
clone = template.clone(true).insertAfter(clones[clones.length - 1] || source);
normalizeElmnt(clone);
/* Normalize template id attribute */
if (clone.attr("id")) {
clone.attr("id", clone.attr("id") + clones.length);
}
plus = clone.find(plusElmnt);
minus = clone.find(minusElmnt);
minus.get(0).removableClone = clone;
minus.click(clickOnMinus);
plus.click(clickOnPlus);
if (options.limit && (options.limit - 2) > clones.length) {
plus.show();
}else{
plus.hide();
}
clones.push(clone);
}
function clickOnMinus(event){
event.preventDefault();
if (this.removableClone.effect && options.removeColor) {
that = this;
this.removableClone.effect("highlight", {
color: options.removeColor
}, options.duration, function(){that.removableClone.remove();});
} else {
this.removableClone.remove();
}
clones.splice(clones.indexOf(this.removableClone),1);
if (clones.length == 0){
source.find(plusElmnt).show();
}else{
clones[clones.length -1].find(plusElmnt).show();
}
}
/* Handle click on plus */
plus.click(clickOnPlus);
/* Handle click on minus */
minus.click(function(event){
});
}else{
/* If plus element is out of the template */
/* Handle click on plus */
plus.click(function(event){
var clone;
event.preventDefault();
/* On first add, normalize source */
if (clones.length == 0) {
normalizeElmnt(source);
jQuery(minusElmnt).show();
}
/* Clone template and normalize it */
clone = template.clone(true).insertAfter(clones[clones.length - 1] || source);
if (clone.effect && options.createColor) {
clone.effect("highlight", {color:options.createColor}, options.duration);
}
normalizeElmnt(clone);
/* Normalize template id attribute */
if (clone.attr("id")) {
clone.attr("id", clone.attr("id") + clones.length);
}
if (options.limit && (options.limit - 3) < clones.length) {
plus.hide();
}
clones.push(clone);
});
/* Handle click on minus */
minus.click(function(event){
event.preventDefault();
var clone = clones.pop();
if (clones.length >= 0) {
if (clone.effect && options.removeColor) {
that = this;
clone.effect("highlight", {
color: options.removeColor, mode:"hide"
}, options.duration, function(){clone.remove();});
} else {
clone.remove();
}
}
if (clones.length == 0) {
jQuery(minusElmnt).hide();
}
plus.show();
});
}
};
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