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511 lines
15 KiB
511 lines
15 KiB
/* ******************************
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Nag
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Author: Jack Lukic
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Notes: First Commit July 19, 2012
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Simple fixed position nag
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****************************** */
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;(function ($, window, document, undefined) {
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$.fn.nag = function(parameters) {
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var
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$allModules = $(this),
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settings = $.extend(true, {}, $.fn.nag.settings, parameters),
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className = settings.className,
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selector = settings.selector,
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error = settings.errors,
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namespace = settings.namespace,
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eventNamespace = '.' + namespace,
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moduleNamespace = namespace + '-module',
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moduleSelector = $allModules.selector || '',
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time = new Date().getTime(),
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performance = [],
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query = arguments[0],
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methodInvoked = (typeof query == 'string'),
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queryArguments = [].slice.call(arguments, 1),
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invokedResponse
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;
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$(this)
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.each(function() {
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var
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$module = $(this),
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$close = $module.find(selector.close),
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$context = $(settings.context),
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element = this,
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instance = $module.data(moduleNamespace),
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moduleOffset,
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moduleHeight,
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contextWidth,
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contextHeight,
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contextOffset,
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yOffset,
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yPosition,
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timer,
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module,
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requestAnimationFrame = window.requestAnimationFrame
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|| window.mozRequestAnimationFrame
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|| window.webkitRequestAnimationFrame
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|| window.msRequestAnimationFrame
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|| function(callback) { setTimeout(callback, 0); }
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;
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module = {
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initialize: function() {
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module.verbose('Initializing element');
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// calculate module offset once
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moduleOffset = $module.offset();
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moduleHeight = $module.outerHeight();
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contextWidth = $context.outerWidth();
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contextHeight = $context.outerHeight();
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contextOffset = $context.offset();
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$module
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.data(moduleNamespace, module)
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;
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$close
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.on('click' + eventNamespace, module.dismiss)
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;
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// lets avoid javascript if we dont need to reposition
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if(settings.context == window && settings.position == 'fixed') {
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$module
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.addClass(className.fixed)
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;
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}
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if(settings.sticky) {
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module.verbose('Adding scroll events');
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// retrigger on scroll for absolute
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if(settings.position == 'absolute') {
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$context
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.on('scroll' + eventNamespace, module.event.scroll)
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.on('resize' + eventNamespace, module.event.scroll)
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;
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}
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// fixed is always relative to window
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else {
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$(window)
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.on('scroll' + eventNamespace, module.event.scroll)
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.on('resize' + eventNamespace, module.event.scroll)
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;
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}
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// fire once to position on init
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$.proxy(module.event.scroll, this)();
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}
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if(settings.displayTime > 0) {
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setTimeout(module.hide, settings.displayTime);
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}
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if(module.should.show()) {
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if( !$module.is(':visible') ) {
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module.show();
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}
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}
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else {
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module.hide();
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}
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},
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destroy: function() {
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module.verbose('Destroying instance');
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$module
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.removeData(moduleNamespace)
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.off(eventNamespace)
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;
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if(settings.sticky) {
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$context
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.off(eventNamespace)
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;
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}
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},
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refresh: function() {
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module.debug('Refreshing cached calculations');
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moduleOffset = $module.offset();
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moduleHeight = $module.outerHeight();
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contextWidth = $context.outerWidth();
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contextHeight = $context.outerHeight();
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contextOffset = $context.offset();
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},
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show: function() {
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module.debug('Showing nag', settings.animation.show);
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if(settings.animation.show == 'fade') {
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$module
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.fadeIn(settings.duration, settings.easing)
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;
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}
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else {
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$module
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.slideDown(settings.duration, settings.easing)
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;
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}
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},
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hide: function() {
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module.debug('Showing nag', settings.animation.hide);
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if(settings.animation.show == 'fade') {
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$module
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.fadeIn(settings.duration, settings.easing)
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;
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}
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else {
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$module
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.slideUp(settings.duration, settings.easing)
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;
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}
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},
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onHide: function() {
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module.debug('Removing nag', settings.animation.hide);
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$module.remove();
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if (settings.onHide) {
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settings.onHide();
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}
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},
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stick: function() {
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module.refresh();
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if(settings.position == 'fixed') {
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var
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windowScroll = $(window).prop('pageYOffset') || $(window).scrollTop(),
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fixedOffset = ( $module.hasClass(className.bottom) )
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? contextOffset.top + (contextHeight - moduleHeight) - windowScroll
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: contextOffset.top - windowScroll
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;
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$module
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.css({
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position : 'fixed',
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top : fixedOffset,
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left : contextOffset.left,
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width : contextWidth - settings.scrollBarWidth
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})
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;
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}
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else {
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$module
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.css({
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top : yPosition
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})
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;
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}
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},
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unStick: function() {
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$module
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.css({
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top : ''
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})
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;
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},
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dismiss: function(event) {
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if(settings.storageMethod) {
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module.storage.set(settings.storedKey, settings.storedValue);
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}
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module.hide();
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event.stopImmediatePropagation();
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event.preventDefault();
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},
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should: {
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show: function() {
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if(settings.persist) {
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module.debug('Persistent nag is set, can show nag');
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return true;
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}
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if(module.storage.get(settings.storedKey) != settings.storedValue) {
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module.debug('Stored value is not set, can show nag', module.storage.get(settings.storedKey));
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return true;
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}
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module.debug('Stored value is set, cannot show nag', module.storage.get(settings.storedKey));
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return false;
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},
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stick: function() {
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yOffset = $context.prop('pageYOffset') || $context.scrollTop();
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yPosition = ( $module.hasClass(className.bottom) )
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? (contextHeight - $module.outerHeight() ) + yOffset
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: yOffset
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;
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// absolute position calculated when y offset met
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if(yPosition > moduleOffset.top) {
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return true;
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}
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else if(settings.position == 'fixed') {
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return true;
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}
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return false;
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}
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},
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storage: {
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set: function(key, value) {
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module.debug('Setting stored value', key, value, settings.storageMethod);
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if(settings.storageMethod == 'local' && window.store !== undefined) {
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window.store.set(key, value);
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}
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// store by cookie
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else if($.cookie !== undefined) {
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$.cookie(key, value);
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}
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else {
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module.error(error.noStorage);
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}
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},
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get: function(key) {
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module.debug('Getting stored value', key, settings.storageMethod);
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if(settings.storageMethod == 'local' && window.store !== undefined) {
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return window.store.get(key);
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}
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// get by cookie
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else if($.cookie !== undefined) {
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return $.cookie(key);
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}
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else {
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module.error(error.noStorage);
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}
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}
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},
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event: {
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scroll: function() {
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if(timer !== undefined) {
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clearTimeout(timer);
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}
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timer = setTimeout(function() {
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if(module.should.stick() ) {
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requestAnimationFrame(module.stick);
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}
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else {
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module.unStick();
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}
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}, settings.lag);
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}
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},
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setting: function(name, value) {
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module.debug('Changing setting', name, value);
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if(value !== undefined) {
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if( $.isPlainObject(name) ) {
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$.extend(true, settings, name);
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}
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else {
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settings[name] = value;
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}
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}
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else {
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return settings[name];
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}
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},
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internal: function(name, value) {
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module.debug('Changing internal', name, value);
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if(value !== undefined) {
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if( $.isPlainObject(name) ) {
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$.extend(true, module, name);
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}
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else {
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module[name] = value;
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}
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}
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else {
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return module[name];
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}
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},
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debug: function() {
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if(settings.debug) {
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if(settings.performance) {
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module.performance.log(arguments);
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}
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else {
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module.debug = Function.prototype.bind.call(console.info, console, settings.moduleName + ':');
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}
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}
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},
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verbose: function() {
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if(settings.verbose && settings.debug) {
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if(settings.performance) {
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module.performance.log(arguments);
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}
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else {
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module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':');
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}
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}
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},
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error: function() {
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module.error = Function.prototype.bind.call(console.log, console, settings.moduleName + ':');
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},
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performance: {
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log: function(message) {
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var
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currentTime,
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executionTime,
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previousTime
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;
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if(settings.performance) {
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currentTime = new Date().getTime();
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previousTime = time || currentTime;
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executionTime = currentTime - previousTime;
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time = currentTime;
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performance.push({
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'Element' : element,
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'Name' : message[0],
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'Arguments' : [].slice.call(message, 1) || '',
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'Execution Time' : executionTime
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});
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}
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clearTimeout(module.performance.timer);
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module.performance.timer = setTimeout(module.performance.display, 100);
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},
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display: function() {
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var
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title = settings.moduleName + ':',
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totalTime = 0
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;
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time = false;
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clearTimeout(module.performance.timer);
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$.each(performance, function(index, data) {
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totalTime += data['Execution Time'];
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});
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title += ' ' + totalTime + 'ms';
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if(moduleSelector) {
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title += ' \'' + moduleSelector + '\'';
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}
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if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
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console.groupCollapsed(title);
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if(console.table) {
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console.table(performance);
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}
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else {
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$.each(performance, function(index, data) {
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console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
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});
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}
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console.groupEnd();
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}
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performance = [];
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}
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},
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invoke: function(query, passedArguments, context) {
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var
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maxDepth,
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found
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;
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passedArguments = passedArguments || queryArguments;
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context = element || context;
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if(typeof query == 'string' && instance !== undefined) {
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query = query.split(/[\. ]/);
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maxDepth = query.length - 1;
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$.each(query, function(depth, value) {
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if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
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instance = instance[value];
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return true;
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}
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else if( instance[value] !== undefined ) {
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found = instance[value];
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return true;
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}
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module.error(error.method);
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return false;
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});
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}
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if ( $.isFunction( found ) ) {
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return found.apply(context, passedArguments);
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}
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return found || false;
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}
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};
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if(methodInvoked) {
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if(instance === undefined) {
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module.initialize();
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}
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invokedResponse = module.invoke(query);
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}
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else {
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if(instance !== undefined) {
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module.destroy();
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}
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module.initialize();
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}
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})
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;
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return (invokedResponse)
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? invokedResponse
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: this
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;
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};
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$.fn.nag.settings = {
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moduleName : 'Nag',
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verbose : true,
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debug : true,
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performance : true,
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namespace : 'Nag',
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// allows cookie to be overriden
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persist : false,
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// set to zero to manually dismiss, otherwise hides on its own
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displayTime : 0,
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animation : {
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show: 'slide',
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hide: 'slide'
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},
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// method of stickyness
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position : 'fixed',
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scrollBarWidth : 18,
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// type of storage to use
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storageMethod : 'cookie',
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// value to store in dismissed localstorage/cookie
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storedKey : 'nag',
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storedValue : 'dismiss',
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// need to calculate stickyness on scroll
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sticky : false,
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// how often to check scroll event
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lag : 0,
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// context for scroll event
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context : window,
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error: {
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noStorage : 'Neither $.cookie or store is defined. A storage solution is required for storing state',
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method : 'The method you called is not defined.'
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},
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className : {
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bottom : 'bottom',
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fixed : 'fixed'
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},
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selector : {
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close: '.icon.close'
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},
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speed : 500,
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easing : 'easeOutQuad',
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onHide: function() {}
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};
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})( jQuery, window , document );
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