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Add delay option #1

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Add delay option #1

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52 changes: 36 additions & 16 deletions jquery.formwatch.js
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Original file line number Diff line number Diff line change
@@ -1,10 +1,12 @@
/*
jQuery FormWatch: easily monitor changes in form data.
https://github.com/kylefox/jQuery-FormWatch
Version 0.1
Version 0.2
*/
(function($) {

var timeoutId;
var delay = 0;

function _eventArgs() {
return $.map(arguments, function(arg) {
if('deparam' in $) {
Expand All @@ -13,53 +15,71 @@
return arg;
});
}


function _checkChangeWithTimeout() {
if (typeof timeoutId != 'undefined') {
clearTimeout(timeoutId)
}

var that = this
timeoutId = setTimeout(function() {
_checkChange.apply(that)
}, delay)
}

function _checkChange() {
var form = $(this),
oldData = form.data('oldData'),
originalData = form.data('originalData'),
newData = form.serialize(),
args = _eventArgs(newData, oldData, originalData);

if(newData !== oldData) {
form.trigger('modified', args);
form.data('dirty', true);
}

if(form.data('dirty') && newData === originalData) {
form.trigger('reverted', args);
form.data('dirty', false);
}

form.data('oldData', newData);
};

function _watch(form) {
var formData = form.serialize();
form.bind('change', _checkChange);
form.bind('keydown', _checkChange);
form.bind('keyup', _checkChange);
form.on('change', _checkChangeWithTimeout);
form.on('keydown', _checkChangeWithTimeout);
form.on('keyup', _checkChangeWithTimeout);
form.data('dirty', false);
form.data('oldData', formData);
form.data('originalData', formData);
};

function _unwatch(form) {
form.unbind('change', _checkChange);
form.unbind('keydown', _checkChange);
form.unbind('keyup', _checkChange);
form.off('change', _checkChangeWithTimeout);
form.off('keydown', _checkChangeWithTimeout);
form.off('keyup', _checkChangeWithTimeout);
form.data('dirty', null);
form.data('oldData', null);
form.data('originalData', null);
}

$.fn.watch = function() {

$.fn.watch = function(_delay) {
if (_delay) {
delay = _delay
}

$(this).each(function(idx, elm) {
_watch($(elm));
});
};

$.fn.unwatch = function() {
$(this).each(function(idx, elm) {
_unwatch($(elm));
});
};
})(jQuery);

})(jQuery);