480 lines
14 KiB
JavaScript
480 lines
14 KiB
JavaScript
function _classCallCheck(instance, Constructor) {
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if (!(instance instanceof Constructor)) {
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throw new TypeError("Cannot call a class as a function");
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}
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}
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function _defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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function _createClass(Constructor, protoProps, staticProps) {
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if (protoProps) _defineProperties(Constructor.prototype, protoProps);
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if (staticProps) _defineProperties(Constructor, staticProps);
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return Constructor;
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}
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var defaults = {
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classNames: {
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active: 'gl-active',
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base: 'gl-star-rating',
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selected: 'gl-selected'
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},
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clearable: true,
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maxStars: 10,
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prebuilt: false,
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stars: null,
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tooltip: 'Select a Rating'
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};
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var addRemoveClass = function addRemoveClass(el, bool, className) {
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el.classList[bool ? 'add' : 'remove'](className);
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};
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var createSpanEl = function createSpanEl(attributes) {
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var el = document.createElement('span');
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attributes = attributes || {};
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for (var key in attributes) {
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el.setAttribute(key, attributes[key]);
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}
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return el;
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};
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var inRange = function inRange(value, min, max) {
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return /^\d+$/.test(value) && min <= value && value <= max;
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};
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var insertSpanEl = function insertSpanEl(el, after, attributes) {
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var newEl = createSpanEl(attributes);
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el.parentNode.insertBefore(newEl, after ? el.nextSibling : el);
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return newEl;
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};
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var merge = function merge() {
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for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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// adapted from https://github.com/firstandthird/aug
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var results = {};
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args.forEach(function (prop) {
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Object.keys(prop || {}).forEach(function (propName) {
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if (args[0][propName] === undefined) return; // restrict keys to the defaults
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var propValue = prop[propName];
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if (type(propValue) === 'Object' && type(results[propName]) === 'Object') {
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results[propName] = merge(results[propName], propValue);
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return;
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}
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results[propName] = propValue;
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});
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});
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return results;
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};
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var type = function type(value) {
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return {}.toString.call(value).slice(8, -1);
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};
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var values = function values(selectEl) {
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var values = [];
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[].forEach.call(selectEl.options, function (el) {
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var value = parseInt(el.value, 10) || 0;
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if (value > 0) {
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values.push({
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index: el.index,
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text: el.text,
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value: value
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});
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}
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});
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return values.sort(function (a, b) {
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return a.value - b.value;
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});
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};
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var Widget = /*#__PURE__*/function () {
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function Widget(el, props) {
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_classCallCheck(this, Widget);
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// (HTMLElement, object):void
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this.direction = window.getComputedStyle(el, null).getPropertyValue('direction');
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this.el = el;
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this.events = {
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change: this.onChange.bind(this),
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keydown: this.onKeyDown.bind(this),
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mousedown: this.onPointerDown.bind(this),
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mouseleave: this.onPointerLeave.bind(this),
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mousemove: this.onPointerMove.bind(this),
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reset: this.onReset.bind(this),
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touchend: this.onPointerDown.bind(this),
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touchmove: this.onPointerMove.bind(this)
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};
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this.indexActive = null; // the active span index
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this.indexSelected = null; // the selected span index
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this.props = props;
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this.tick = null;
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this.ticking = false;
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this.values = values(el);
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this.widgetEl = null;
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if (this.el.widget) {
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this.el.widget.destroy(); // remove any stale event listeners
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}
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if (inRange(this.values.length, 1, this.props.maxStars)) {
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this.build();
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} else {
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this.destroy();
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}
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}
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_createClass(Widget, [{
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key: "build",
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value: function build() {
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// ():void
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this.destroy();
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this.buildWidget();
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this.selectValue(this.indexSelected = this.selected(), false); // set the initial value but do not trigger change event
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this.handleEvents('add');
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this.el.widget = this; // store a reference to this widget on the SELECT so that we can remove stale event listeners
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}
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}, {
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key: "buildWidget",
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value: function buildWidget() {
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var _this = this;
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// ():void
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var parentEl, widgetEl;
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if (this.props.prebuilt) {
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parentEl = this.el.parentNode;
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widgetEl = parentEl.querySelector('.' + this.props.classNames.base + '--stars');
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} else {
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parentEl = insertSpanEl(this.el, false, {
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"class": this.props.classNames.base
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});
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parentEl.appendChild(this.el);
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widgetEl = insertSpanEl(this.el, true, {
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"class": this.props.classNames.base + '--stars'
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});
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this.values.forEach(function (item, index) {
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var el = createSpanEl({
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'data-index': index,
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'data-value': item.value
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});
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if ('function' === typeof _this.props.stars) {
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_this.props.stars.call(_this, el, item, index);
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}
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[].forEach.call(el.children, function (el) {
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return el.style.pointerEvents = 'none';
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});
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widgetEl.innerHTML += el.outerHTML;
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});
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}
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parentEl.dataset.starRating = '';
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parentEl.classList.add(this.props.classNames.base + '--' + this.direction);
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if (this.props.tooltip) {
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widgetEl.setAttribute('role', 'tooltip');
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}
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this.widgetEl = widgetEl;
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}
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}, {
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key: "changeIndexTo",
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value: function changeIndexTo(index, force) {
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var _this2 = this;
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// (int):void
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if (this.indexActive !== index || force) {
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[].forEach.call(this.widgetEl.children, function (el, i) {
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// i starts at zero
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addRemoveClass(el, i <= index, _this2.props.classNames.active);
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addRemoveClass(el, i === _this2.indexSelected, _this2.props.classNames.selected);
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});
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this.widgetEl.setAttribute('data-rating', index + 1);
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if ('function' !== typeof this.props.stars && !this.props.prebuilt) {
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// @v3 compat
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this.widgetEl.classList.remove('s' + 10 * (this.indexActive + 1));
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this.widgetEl.classList.add('s' + 10 * (index + 1));
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}
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if (this.props.tooltip) {
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var _this$values$index;
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var label = index < 0 ? this.props.tooltip : (_this$values$index = this.values[index]) === null || _this$values$index === void 0 ? void 0 : _this$values$index.text;
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this.widgetEl.setAttribute('aria-label', label);
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}
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this.indexActive = index;
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}
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this.ticking = false;
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}
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}, {
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key: "destroy",
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value: function destroy() {
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// ():void
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this.indexActive = null; // the active span index
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this.indexSelected = this.selected(); // the selected span index
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var parentEl = this.el.parentNode;
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if (parentEl.classList.contains(this.props.classNames.base)) {
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if (this.props.prebuilt) {
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this.widgetEl = parentEl.querySelector('.' + this.props.classNames.base + '--stars');
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parentEl.classList.remove(this.props.classNames.base + '--' + this.direction);
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delete parentEl.dataset.starRating;
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} else {
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parentEl.parentNode.replaceChild(this.el, parentEl);
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}
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this.handleEvents('remove');
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}
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delete this.el.widget; // remove the widget reference
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}
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}, {
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key: "eventListener",
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value: function eventListener(el, action, events, items) {
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var _this3 = this;
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// (HTMLElement, string, array, object):void
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events.forEach(function (ev) {
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return el[action + 'EventListener'](ev, _this3.events[ev], items || false);
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});
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}
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}, {
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key: "handleEvents",
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value: function handleEvents(action) {
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// (string):void
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var formEl = this.el.closest('form');
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if (formEl && formEl.tagName === 'FORM') {
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this.eventListener(formEl, action, ['reset']);
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}
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this.eventListener(this.el, action, ['change']); // always trigger the change event, even when SELECT is disabled
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if ('add' === action && this.el.disabled) return;
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this.eventListener(this.el, action, ['keydown']);
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this.eventListener(this.widgetEl, action, ['mousedown', 'mouseleave', 'mousemove', 'touchend', 'touchmove'], false);
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}
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}, {
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key: "indexFromEvent",
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value: function indexFromEvent(ev) {
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var _ev$touches, _ev$changedTouches;
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// (MouseEvent|TouchEvent):void
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var origin = ((_ev$touches = ev.touches) === null || _ev$touches === void 0 ? void 0 : _ev$touches[0]) || ((_ev$changedTouches = ev.changedTouches) === null || _ev$changedTouches === void 0 ? void 0 : _ev$changedTouches[0]) || ev;
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var el = document.elementFromPoint(origin.clientX, origin.clientY);
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if (el.parentNode === this.widgetEl) {
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return [].slice.call(el.parentNode.children).indexOf(el);
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}
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return this.indexActive;
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}
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}, {
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key: "onChange",
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value: function onChange() {
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// ():void
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this.changeIndexTo(this.selected(), true);
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}
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}, {
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key: "onKeyDown",
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value: function onKeyDown(ev) {
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// (KeyboardEvent):void
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var key = ev.key.slice(5);
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if (!~['Left', 'Right'].indexOf(key)) return;
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ev.preventDefault();
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var increment = key === 'Left' ? -1 : 1;
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if (this.direction === 'rtl') {
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increment *= -1;
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}
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var maxIndex = this.values.length - 1;
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var minIndex = -1;
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var index = Math.min(Math.max(this.selected() + increment, minIndex), maxIndex);
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this.selectValue(index, true); // trigger change event
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}
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}, {
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key: "onPointerDown",
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value: function onPointerDown(ev) {
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// (MouseEvent|TouchEvent):void
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ev.preventDefault(); // this.el.focus(); // highlight the rating field
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var index = this.indexFromEvent(ev);
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if (this.props.clearable && index === this.indexSelected) {
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index = -1; // remove the value
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}
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this.selectValue(index, true); // trigger change event
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}
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}, {
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key: "onPointerLeave",
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value: function onPointerLeave(ev) {
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var _this4 = this;
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// (MouseEvent):void
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ev.preventDefault();
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cancelAnimationFrame(this.tick);
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requestAnimationFrame(function () {
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return _this4.changeIndexTo(_this4.indexSelected);
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});
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}
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}, {
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key: "onPointerMove",
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value: function onPointerMove(ev) {
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var _this5 = this;
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// (MouseEvent|TouchEvent):void
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ev.preventDefault();
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if (!this.ticking) {
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this.tick = requestAnimationFrame(function () {
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return _this5.changeIndexTo(_this5.indexFromEvent(ev));
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});
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this.ticking = true;
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}
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}
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}, {
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key: "onReset",
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value: function onReset() {
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var _this$el$querySelecto;
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// ():void
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var index = this.valueIndex((_this$el$querySelecto = this.el.querySelector('[selected]')) === null || _this$el$querySelecto === void 0 ? void 0 : _this$el$querySelecto.value);
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this.selectValue(index || -1, false); // do not trigger change event
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}
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}, {
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key: "selected",
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value: function selected() {
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// ():int
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return this.valueIndex(this.el.value); // get the selected span index
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}
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}, {
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key: "selectValue",
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value: function selectValue(index, triggerChangeEvent) {
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var _this$values$index2;
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// (int, bool):void
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this.el.value = ((_this$values$index2 = this.values[index]) === null || _this$values$index2 === void 0 ? void 0 : _this$values$index2.value) || ''; // first set the new value
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this.indexSelected = this.selected(); // get the actual index from the selected value
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if (false === triggerChangeEvent) {
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this.changeIndexTo(this.selected(), true);
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} else {
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this.el.dispatchEvent(new Event('change'));
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}
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}
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}, {
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key: "valueIndex",
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value: function valueIndex(value) {
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return this.values.findIndex(function (val) {
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return val.value === +value;
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});
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}
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}]);
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return Widget;
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}();
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var StarRating = /*#__PURE__*/function () {
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function StarRating(selector, props) {
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_classCallCheck(this, StarRating);
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// (HTMLSelectElement|NodeList|string, object):void
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this.destroy = this.destroy.bind(this);
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this.props = props;
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this.rebuild = this.rebuild.bind(this);
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this.selector = selector;
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this.widgets = [];
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this.build();
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}
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_createClass(StarRating, [{
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key: "build",
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value: function build() {
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var _this = this;
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// (HTMLSelectElement|NodeList|string, object):void
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this.queryElements(this.selector).forEach(function (el) {
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var options = merge(defaults, _this.props, JSON.parse(el.getAttribute('data-options')));
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if ('SELECT' === el.tagName && !el.widget) {
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// check for an existing Widget reference
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if (!options.prebuilt && el.parentNode.classList.contains(options.classNames.base)) {
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_this.unwrap(el);
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}
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_this.widgets.push(new Widget(el, options));
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}
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});
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}
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}, {
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key: "destroy",
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value: function destroy() {
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// ():void
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this.widgets.forEach(function (widget) {
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return widget.destroy();
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});
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this.widgets = [];
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}
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}, {
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key: "queryElements",
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value: function queryElements(selector) {
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// (HTMLSelectElement|NodeList|string):array
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if ('HTMLSelectElement' === type(selector)) {
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return [selector];
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}
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if ('NodeList' === type(selector)) {
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return [].slice.call(selector);
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}
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if ('String' === type(selector)) {
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return [].slice.call(document.querySelectorAll(selector));
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}
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return [];
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}
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}, {
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key: "rebuild",
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value: function rebuild() {
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// ():void
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this.destroy();
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this.build();
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}
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}, {
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key: "unwrap",
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value: function unwrap(el) {
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var removeEl = el.parentNode;
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var parentEl = removeEl.parentNode;
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parentEl.insertBefore(el, removeEl);
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parentEl.removeChild(removeEl);
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}
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}]);
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return StarRating;
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}();
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export default StarRating;
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