- /*! RateIt | v1.1.2 / 03/28/2019
- https://github.com/gjunge/rateit.js | Twitter: @gjunge
- */
- (function ($) {
- $.rateit = {
- aria: {
- resetLabel: 'reset rating',
- ratingLabel: 'rating'
- }
- };
- $.fn.rateit = function (p1, p2) {
- //quick way out.
- var index = 1;
- var options = {}; var mode = 'init';
- var capitaliseFirstLetter = function (string) {
- return string.charAt(0).toUpperCase() + string.substr(1);
- };
- if (this.length === 0) { return this; }
- var tp1 = $.type(p1);
- if (tp1 == 'object' || p1 === undefined || p1 === null) {
- options = $.extend({}, $.fn.rateit.defaults, p1); //wants to init new rateit plugin(s).
- }
- else if (tp1 == 'string' && p1 !== 'reset' && p2 === undefined) {
- return this.data('rateit' + capitaliseFirstLetter(p1)); //wants to get a value.
- }
- else if (tp1 == 'string') {
- mode = 'setvalue';
- }
- return this.each(function () {
- var item = $(this);
- //shorten all the item.data('rateit-XXX'), will save space in closure compiler, will be like item.data('XXX') will become x('XXX')
- var itemdata = function (key, value) {
- if (value != null) {
- //update aria values
- var ariakey = 'aria-value' + ((key == 'value') ? 'now' : key);
- var range = item.find('.rateit-range');
- if (range.attr(ariakey) != undefined) {
- range.attr(ariakey, value);
- }
- }
- arguments[0] = 'rateit' + capitaliseFirstLetter(key);
- return item.data.apply(item, arguments); ////Fix for WI: 523
- };
- //handle programmatic reset
- if (p1 == 'reset') {
- var setup = itemdata('init'); //get initial value
- for (var prop in setup) {
- item.data(prop, setup[prop]);
- }
- if (itemdata('backingfld')) { //reset also backingfield
- var fld = $(itemdata('backingfld'));
- // If backing field is a select box with valuesrc option set to "index", reset its selectedIndex property; otherwise, reset its value.
- if (fld[0].nodeName == 'SELECT' && fld[0].getAttribute('data-rateit-valuesrc') === 'index') {
- fld.prop('selectedIndex', itemdata('value'));
- }
- else {
- fld.val(itemdata('value'));
- }
- fld.trigger('change');
- if (fld[0].min) { fld[0].min = itemdata('min'); }
- if (fld[0].max) { fld[0].max = itemdata('max'); }
- if (fld[0].step) { fld[0].step = itemdata('step'); }
- }
- item.trigger('reset');
- }
- //add the rate it class.
- if (!item.hasClass('rateit')) { item.addClass('rateit'); }
- var ltr = item.css('direction') != 'rtl';
- // set value mode
- if (mode == 'setvalue') {
- if (!itemdata('init')) { throw 'Can\'t set value before init'; }
- //if readonly now and it wasn't readonly, remove the eventhandlers.
- if (p1 == 'readonly' && p2 == true && !itemdata('readonly')) {
- item.find('.rateit-range').unbind();
- itemdata('wired', false);
- }
- //when we receive a null value, reset the score to its min value.
- if (p1 == 'value') {
- p2 = (p2 == null) ? itemdata('min') : Math.max(itemdata('min'), Math.min(itemdata('max'), p2));
- }
- if (itemdata('backingfld')) {
- //if we have a backing field, check which fields we should update.
- //In case of input[type=range], although we did read its attributes even in browsers that don't support it (using fld.attr())
- //we only update it in browser that support it (&& fld[0].min only works in supporting browsers), not only does it save us from checking if it is range input type, it also is unnecessary.
- var fld = $(itemdata('backingfld'));
- // If backing field is a select box with valuesrc option set to "index", update its selectedIndex property; otherwise, update its value.
- if (fld[0].nodeName == 'SELECT' && fld[0].getAttribute('data-rateit-valuesrc') === 'index') {
- if (p1 == 'value') { fld.prop('selectedIndex', p2); }
- }
- else {
- if (p1 == 'value') { fld.val(p2); }
- }
- if (p1 == 'min' && fld[0].min) { fld[0].min = p2; }
- if (p1 == 'max' && fld[0].max) { fld[0].max = p2;}
- if (p1 == 'step' && fld[0].step) { fld[0].step = p2; }
- }
- itemdata(p1, p2);
- }
- //init rateit plugin
- if (!itemdata('init')) {
- //get our values, either from the data-* html5 attribute or from the options.
- itemdata('mode', itemdata('mode') || options.mode)
- itemdata('icon', itemdata('icon') || options.icon)
- itemdata('min', isNaN(itemdata('min')) ? options.min : itemdata('min'));
- itemdata('max', isNaN(itemdata('max')) ? options.max : itemdata('max'));
- itemdata('step', itemdata('step') || options.step);
- itemdata('readonly', itemdata('readonly') !== undefined ? itemdata('readonly') : options.readonly);
- itemdata('resetable', itemdata('resetable') !== undefined ? itemdata('resetable') : options.resetable);
- itemdata('backingfld', itemdata('backingfld') || options.backingfld);
- itemdata('starwidth', itemdata('starwidth') || options.starwidth);
- itemdata('starheight', itemdata('starheight') || options.starheight);
- itemdata('value', Math.max(itemdata('min'), Math.min(itemdata('max'), (!isNaN(itemdata('value')) ? itemdata('value') : (!isNaN(options.value) ? options.value : options.min)))));
- itemdata('ispreset', itemdata('ispreset') !== undefined ? itemdata('ispreset') : options.ispreset);
- //are we LTR or RTL?
- if (itemdata('backingfld')) {
- //if we have a backing field, hide it, override defaults if range or select.
- var fld = $(itemdata('backingfld')).hide();
- if (fld.attr('disabled') || fld.attr('readonly')) {
- itemdata('readonly', true); //http://rateit.codeplex.com/discussions/362055 , if a backing field is disabled or readonly at instantiation, make rateit readonly.
- }
- if (fld[0].nodeName == 'INPUT') {
- if (fld[0].type == 'range' || fld[0].type == 'text') { //in browsers not support the range type, it defaults to text
- itemdata('min', parseInt(fld.attr('min')) || itemdata('min')); //if we would have done fld[0].min it wouldn't have worked in browsers not supporting the range type.
- itemdata('max', parseInt(fld.attr('max')) || itemdata('max'));
- itemdata('step', parseInt(fld.attr('step')) || itemdata('step'));
- }
- }
- if (fld[0].nodeName == 'SELECT' && fld[0].options.length > 1) {
- // If backing field is a select box with valuesrc option set to "index", use the indexes of its options; otherwise, use the values.
- if (fld[0].getAttribute('data-rateit-valuesrc') === 'index') {
- itemdata('min', (!isNaN(itemdata('min')) ? itemdata('min') : Number(fld[0].options[0].index)));
- itemdata('max', Number(fld[0].options[fld[0].length - 1].index));
- itemdata('step', Number(fld[0].options[1].index) - Number(fld[0].options[0].index));
- }
- else {
- itemdata('min', (!isNaN(itemdata('min')) ? itemdata('min') : Number(fld[0].options[0].value)));
- itemdata('max', Number(fld[0].options[fld[0].length - 1].value));
- itemdata('step', Number(fld[0].options[1].value) - Number(fld[0].options[0].value));
- }
- //see if we have a option that as explicity been selected
- var selectedOption = fld.find('option[selected]');
- if (selectedOption.length == 1) {
- // If backing field is a select box with valuesrc option set to "index", use the index of selected option; otherwise, use the value.
- if (fld[0].getAttribute('data-rateit-valuesrc') === 'index') {
- itemdata('value', selectedOption[0].index);
- }
- else {
- itemdata('value', selectedOption.val());
- }
- }
- }
- else {
- //if it is not a select box, we can get's it's value using the val function.
- //If it is a selectbox, we always get a value (the first one of the list), even if it was not explicity set.
- itemdata('value', fld.val());
- }
- }
- //Create the necessary tags. For ARIA purposes we need to give the items an ID. So we use an internal index to create unique ids
- var element = item[0].nodeName == 'DIV' ? 'div' : 'span';
- index++;
- // tabindex="0" gets only added in readonly mode. When keyboard tabbing, no focus is needed in readonly mode.
- var html = '<button id="rateit-reset-{{index}}" type="button" data-role="none" class="rateit-reset" aria-label="' + $.rateit.aria.resetLabel + '" aria-controls="rateit-range-{{index}}"><span></span></button><{{element}} id="rateit-range-{{index}}" class="rateit-range"' + (itemdata('readonly') == true ? '' : ' tabindex="0"') + ' role="slider" aria-label="' + $.rateit.aria.ratingLabel + '" aria-owns="rateit-reset-{{index}}" aria-valuemin="' + itemdata('min') + '" aria-valuemax="' + itemdata('max') + '" aria-valuenow="' + itemdata('value') + '"><{{element}} class="rateit-empty"></{{element}}><{{element}} class="rateit-selected"></{{element}}><{{element}} class="rateit-hover"></{{element}}></{{element}}>';
- item.append(html.replace(/{{index}}/gi, index).replace(/{{element}}/gi, element));
- //if we are in RTL mode, we have to change the float of the "reset button"
- if (!ltr) {
- item.find('.rateit-reset').css('float', 'right');
- item.find('.rateit-selected').addClass('rateit-selected-rtl');
- item.find('.rateit-hover').addClass('rateit-hover-rtl');
- }
- if (itemdata('mode') == 'font') {
- item.addClass('rateit-font').removeClass('rateit-bg');
- }
- else {
- item.addClass('rateit-bg').removeClass('rateit-font');
- }
- itemdata('init', JSON.parse(JSON.stringify(item.data()))); //cheap way to create a clone
- }
- var isfont = itemdata('mode') == 'font';
- //resize the height of all elements,
- if (!isfont) {
- item.find('.rateit-selected, .rateit-hover').height(itemdata('starheight'));
- }
- var range = item.find('.rateit-range');
- if (isfont) {
- //fill the ranges with the icons
- var icon = itemdata('icon');
- var stars = itemdata('max') - itemdata('min');
- var txt = '';
- for(var i = 0; i< stars; i++){
- txt += icon;
- }
- range.find('> *').text(txt);
- itemdata('starwidth', range.width() / (itemdata('max') - itemdata('min')))
- }
- else {
- //set the range element to fit all the stars.
- range.width(itemdata('starwidth') * (itemdata('max') - itemdata('min'))).height(itemdata('starheight'));
- }
- //add/remove the preset class
- var presetclass = 'rateit-preset' + ((ltr) ? '' : '-rtl');
- if (itemdata('ispreset')) {
- item.find('.rateit-selected').addClass(presetclass);
- }
- else {
- item.find('.rateit-selected').removeClass(presetclass);
- }
- //set the value if we have it.
- if (itemdata('value') != null) {
- var score = (itemdata('value') - itemdata('min')) * itemdata('starwidth');
- item.find('.rateit-selected').width(score);
- }
- //setup the reset button
- var resetbtn = item.find('.rateit-reset');
- if (resetbtn.data('wired') !== true) {
- resetbtn.bind('click', function (e) {
- e.preventDefault();
- resetbtn.blur();
- var event = $.Event('beforereset');
- item.trigger(event);
- if (event.isDefaultPrevented()) {
- return false;
- }
- item.rateit('value', null);
- item.trigger('reset');
- }).data('wired', true);
- }
- //this function calculates the score based on the current position of the mouse.
- var calcRawScore = function (element, event) {
- var pageX = (event.changedTouches) ? event.changedTouches[0].pageX : event.pageX;
- var offsetx = pageX - $(element).offset().left;
- if (!ltr) { offsetx = range.width() - offsetx };
- if (offsetx > range.width()) { offsetx = range.width(); }
- if (offsetx < 0) { offsetx = 0; }
- return score = Math.ceil(offsetx / itemdata('starwidth') * (1 / itemdata('step')));
- };
- //sets the hover element based on the score.
- var setHover = function (score) {
- var w = score * itemdata('starwidth') * itemdata('step');
- var h = range.find('.rateit-hover');
- if (h.data('width') != w) {
- range.find('.rateit-selected').hide();
- h.width(w).show().data('width', w);
- var data = [(score * itemdata('step')) + itemdata('min')];
- item.trigger('hover', data).trigger('over', data);
- }
- };
- var setSelection = function (value) {
- var event = $.Event('beforerated');
- item.trigger(event, [value]);
- if (event.isDefaultPrevented()) {
- return false;
- }
- itemdata('value', value);
- if (itemdata('backingfld')) {
- // If backing field is a select box with valuesrc option set to "index", update its selectedIndex property; otherwise, update its value.
- if (fld[0].nodeName == 'SELECT' && fld[0].getAttribute('data-rateit-valuesrc') === 'index') {
- $(itemdata('backingfld')).prop('selectedIndex', value).trigger('change');
- }
- else {
- $(itemdata('backingfld')).val(value).trigger('change');
- }
- }
- if (itemdata('ispreset')) { //if it was a preset value, unset that.
- range.find('.rateit-selected').removeClass(presetclass);
- itemdata('ispreset', false);
- }
- range.find('.rateit-hover').hide();
- range.find('.rateit-selected').width(value * itemdata('starwidth') - (itemdata('min') * itemdata('starwidth'))).show();
- item.trigger('hover', [null]).trigger('over', [null]).trigger('rated', [value]);
- return true;
- };
- if (!itemdata('readonly')) {
- //if we are not read only, add all the events
- //if we have a reset button, set the event handler.
- if (!itemdata('resetable')) {
- resetbtn.hide();
- }
- //when the mouse goes over the range element, we set the "hover" stars.
- if (!itemdata('wired')) {
- range.bind('touchmove touchend', touchHandler); //bind touch events
- range.mousemove(function (e) {
- var score = calcRawScore(this, e);
- setHover(score);
- });
- //when the mouse leaves the range, we have to hide the hover stars, and show the current value.
- range.mouseleave(function (e) {
- range.find('.rateit-hover').hide().width(0).data('width', '');
- item.trigger('hover', [null]).trigger('over', [null]);
- range.find('.rateit-selected').show();
- });
- //when we click on the range, we have to set the value, hide the hover.
- range.mouseup(function (e) {
- var score = calcRawScore(this, e);
- var value = (score * itemdata('step')) + itemdata('min');
- setSelection(value);
- range.blur();
- });
- //support key nav
- range.keyup(function (e) {
- if (e.which == 38 || e.which == (ltr ? 39 : 37)) {
- setSelection(Math.min(itemdata('value') + itemdata('step'), itemdata('max')));
- }
- if (e.which == 40 || e.which == (ltr ? 37 : 39)) {
- setSelection(Math.max(itemdata('value') - itemdata('step'), itemdata('min')));
- }
- });
- itemdata('wired', true);
- }
- if (itemdata('resetable')) {
- resetbtn.show();
- }
- }
- else {
- resetbtn.hide();
- }
- range.attr('aria-readonly', itemdata('readonly'));
- });
- };
- //touch converter http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
- function touchHandler(event) {
- var touches = event.originalEvent.changedTouches,
- first = touches[0],
- type = "";
- switch (event.type) {
- case "touchmove": type = "mousemove"; break;
- case "touchend": type = "mouseup"; break;
- default: return;
- }
- var simulatedEvent = document.createEvent("MouseEvent");
- simulatedEvent.initMouseEvent(type, true, true, window, 1,
- first.screenX, first.screenY,
- first.clientX, first.clientY, false,
- false, false, false, 0/*left*/, null);
- first.target.dispatchEvent(simulatedEvent);
- event.preventDefault();
- };
- //some default values.
- $.fn.rateit.defaults = { min: 0, max: 5, step: 0.5, mode: 'bg', icon: '★'�', starwidth: 16, starheight: 16, readonly: false, resetable: true, ispreset: false };
- //invoke it on all .rateit elements. This could be removed if not wanted.
- .
- $(function () { $('div.rateit, span.rateit').rateit(); });
- })(jQuery
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