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Let jquery.AreYouSure work after DOM manipulations. #94

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Let jquery.AreYouSure work after DOM manipulations. #94

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66 changes: 50 additions & 16 deletions jquery.are-you-sure.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,9 @@
* Date: 13th August 2014
*/
(function($) {

$.fn.areYouSure = function(options) {

var settings = $.extend(
{
'message' : 'You have unsaved changes!',
Expand Down Expand Up @@ -64,33 +64,58 @@
return val;
};

var storeOrigValue = function($field) {
$field.data('ays-orig', getValue($field));
var storeOrigValue = function($field, $form) {
// If possible, save the field data on the form to be able to check the
// field value when DOM manipulations occur within the form.
var field_value = getValue($field);
if ($field.attr('id')) {
$form.data('ays-orig-field-id-' + $field.attr('id'), field_value);
}
else if ($field.attr('type') !== 'radio' && $field.attr('name')) {
// Dont't do this for radio buttons because radio button group input
// elements have the same name.
$form.data('ays-orig-field-name-' + $field.attr('name'), field_value);
}
else {
$field.data('ays-orig', field_value);
}
};

var getOrigValue = function($field, $form) {
if ($field.attr('id')) {
return $form.data('ays-orig-field-id-' + $field.attr('id'));
}
else if ($field.attr('type') !== 'radio' && $field.attr('name')) {
return $form.data('ays-orig-field-name-' + $field.attr('name'));
}
else {
return $field.data('ays-orig');
}
}

var checkForm = function(evt) {

var isFieldDirty = function($field) {
var origValue = $field.data('ays-orig');
var isFieldDirty = function($field, $form) {
var origValue = getOrigValue($field, $form);
if (undefined === origValue) {
return false;
}
return (getValue($field) != origValue);
};

var $form = ($(this).is('form'))
var $form = ($(this).is('form'))
? $(this)
: $(this).parents('form');

// Test on the target first as it's the most likely to be dirty
if (isFieldDirty($(evt.target))) {
if (isFieldDirty($(evt.target), $form)) {
setDirtyStatus($form, true);
return;
}

$fields = $form.find(settings.fieldSelector);

if (settings.addRemoveFieldsMarksDirty) {
if (settings.addRemoveFieldsMarksDirty) {
// Check if field count has changed
var origCount = $form.data("ays-orig-field-count");
if (origCount != $fields.length) {
Expand All @@ -103,18 +128,18 @@
var isDirty = false;
$fields.each(function() {
$field = $(this);
if (isFieldDirty($field)) {
if (isFieldDirty($field, $form)) {
isDirty = true;
return false; // break
}
});

setDirtyStatus($form, isDirty);
};

var initForm = function($form) {
var fields = $form.find(settings.fieldSelector);
$(fields).each(function() { storeOrigValue($(this)); });
$(fields).each(function() { storeOrigValue($(this), $form); });
$(fields).unbind(settings.fieldEvents, checkForm);
$(fields).bind(settings.fieldEvents, checkForm);
$form.data("ays-orig-field-count", $(fields).length);
Expand All @@ -124,7 +149,7 @@
var setDirtyStatus = function($form, isDirty) {
var changed = isDirty != $form.hasClass(settings.dirtyClass);
$form.toggleClass(settings.dirtyClass, isDirty);

// Fire change event if required
if (changed) {
if (settings.change) settings.change.call($form, $form);
Expand All @@ -140,8 +165,8 @@
var fields = $form.find(settings.fieldSelector);
$(fields).each(function() {
var $field = $(this);
if (!$field.data('ays-orig')) {
storeOrigValue($field);
if (!getOrigValue($field, $form)) {
storeOrigValue($field, $form);
$field.bind(settings.fieldEvents, checkForm);
}
});
Expand All @@ -153,6 +178,14 @@
initForm($(this));
}

// Only binding the events to the fields. Can be used after DOM manipulations.
var bindEvents = function() {
var $form = $(this);
var fields = $form.find(settings.fieldSelector);
$(fields).unbind(settings.fieldEvents, checkForm);
$(fields).bind(settings.fieldEvents, checkForm);
}

if (!settings.silent && !window.aysUnloadSet) {
window.aysUnloadSet = true;
$(window).bind('beforeunload', function() {
Expand All @@ -177,7 +210,7 @@
return;
}
var $form = $(this);

$form.submit(function() {
$form.removeClass(settings.dirtyClass);
});
Expand All @@ -186,6 +219,7 @@
$form.bind('rescan.areYouSure', rescan);
$form.bind('reinitialize.areYouSure', reinitialize);
$form.bind('checkform.areYouSure', checkForm);
$form.bind('bindEvents.areYouSure', bindEvents);
initForm($form);
});
};
Expand Down