Project import generated by Copybara.
GitOrigin-RevId: 63746295f1a5ab5a619056791995793d65529e62
diff --git a/node_modules/mdl-ext/es/carousel/carousel.js b/node_modules/mdl-ext/es/carousel/carousel.js
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+'use strict';
+
+var _isInteger = require('babel-runtime/core-js/number/is-integer');
+
+var _isInteger2 = _interopRequireDefault(_isInteger);
+
+var _toConsumableArray2 = require('babel-runtime/helpers/toConsumableArray');
+
+var _toConsumableArray3 = _interopRequireDefault(_toConsumableArray2);
+
+var _assign = require('babel-runtime/core-js/object/assign');
+
+var _assign2 = _interopRequireDefault(_assign);
+
+var _intervalFunction = require('../utils/interval-function');
+
+var _intervalFunction2 = _interopRequireDefault(_intervalFunction);
+
+var _easing = require('../utils/easing');
+
+var _jsonUtils = require('../utils/json-utils');
+
+var _constants = require('../utils/constants');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * @license
+ * Copyright 2016 Leif Olsen. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This code is built with Google Material Design Lite,
+ * which is Licensed under the Apache License, Version 2.0
+ */
+
+/**
+ * Image carousel
+ */
+
+var MDL_RIPPLE_CONTAINER = 'mdlext-carousel__slide__ripple-container';
+
+(function () {
+ 'use strict';
+
+ //const CAROUSEL = 'mdlext-carousel';
+
+ var SLIDE = 'mdlext-carousel__slide';
+ var ROLE = 'list';
+ var SLIDE_ROLE = 'listitem';
+
+ /**
+ * @constructor
+ * @param {Element} element The element that will be upgraded.
+ */
+ var MaterialExtCarousel = function MaterialExtCarousel(element) {
+ // Stores the element.
+ this.element_ = element;
+
+ // Default config
+ this.config_ = {
+ interactive: true,
+ autostart: false,
+ type: 'slide',
+ interval: 1000,
+ animationLoop: (0, _intervalFunction2.default)(1000)
+ };
+
+ this.scrollAnimation_ = (0, _intervalFunction2.default)(33);
+
+ // Initialize instance.
+ this.init();
+ };
+
+ window['MaterialExtCarousel'] = MaterialExtCarousel;
+
+ /**
+ * Start slideshow animation
+ * @private
+ */
+ MaterialExtCarousel.prototype.startSlideShow_ = function () {
+ var _this = this;
+
+ var nextSlide = function nextSlide() {
+ var slide = _this.element_.querySelector('.' + SLIDE + '[aria-selected]');
+ if (slide) {
+ slide.removeAttribute('aria-selected');
+ slide = slide.nextElementSibling;
+ }
+ if (!slide) {
+ slide = _this.element_.querySelector('.' + SLIDE + ':first-child');
+ _this.animateScroll_(0);
+ }
+ if (slide) {
+ _this.moveSlideIntoViewport_(slide);
+ slide.setAttribute('aria-selected', '');
+ _this.emitSelectEvent_('next', null, slide);
+ return true;
+ }
+ return false;
+ };
+
+ var nextScroll = function nextScroll(direction) {
+ var nextDirection = direction;
+
+ if ('next' === direction && _this.element_.scrollLeft === _this.element_.scrollWidth - _this.element_.clientWidth) {
+ nextDirection = 'prev';
+ } else if (_this.element_.scrollLeft === 0) {
+ nextDirection = 'next';
+ }
+ var x = 'next' === nextDirection ? Math.min(_this.element_.scrollLeft + _this.element_.clientWidth, _this.element_.scrollWidth - _this.element_.clientWidth) : Math.max(_this.element_.scrollLeft - _this.element_.clientWidth, 0);
+
+ _this.animateScroll_(x, 1000);
+ return nextDirection;
+ };
+
+ if (!this.config_.animationLoop.started) {
+ (function () {
+ _this.config_.animationLoop.interval = _this.config_.interval;
+ var direction = 'next';
+
+ if ('scroll' === _this.config_.type) {
+ _this.config_.animationLoop.start(function () {
+ direction = nextScroll(direction);
+ return true; // It runs until cancelSlideShow_ is triggered
+ });
+ } else {
+ nextSlide();
+ _this.config_.animationLoop.start(function () {
+ return nextSlide(); // It runs until cancelSlideShow_ is triggered
+ });
+ }
+ })();
+ }
+
+ // TODO: Pause animation when carousel is not in browser viewport or user changes tab
+ };
+
+ /**
+ * Cancel slideshow if running. Emmits a 'pause' event
+ * @private
+ */
+ MaterialExtCarousel.prototype.cancelSlideShow_ = function () {
+ if (this.config_.animationLoop.started) {
+ this.config_.animationLoop.stop();
+ this.emitSelectEvent_('pause', _constants.VK_ESC, this.element_.querySelector('.' + SLIDE + '[aria-selected]'));
+ }
+ };
+
+ /**
+ * Animate scroll
+ * @param newPosition
+ * @param newDuration
+ * @param completedCallback
+ * @private
+ */
+ MaterialExtCarousel.prototype.animateScroll_ = function (newPosition, newDuration, completedCallback) {
+ var _this2 = this;
+
+ var start = this.element_.scrollLeft;
+ var distance = newPosition - start;
+
+ if (distance !== 0) {
+ (function () {
+ var duration = Math.max(Math.min(Math.abs(distance), newDuration || 400), 100); // duration is between 100 and newDuration||400ms||distance
+ var t = 0;
+ _this2.scrollAnimation_.stop();
+ _this2.scrollAnimation_.start(function (timeElapsed) {
+ t += timeElapsed;
+ if (t < duration) {
+ _this2.element_.scrollLeft = (0, _easing.inOutQuintic)(t, start, distance, duration);
+ return true;
+ } else {
+ _this2.element_.scrollLeft = newPosition;
+ if (completedCallback) {
+ completedCallback();
+ }
+ return false;
+ }
+ });
+ })();
+ } else {
+ if (completedCallback) {
+ completedCallback();
+ }
+ }
+ };
+
+ /**
+ * Execute commend
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.command_ = function (event) {
+ var _this3 = this;
+
+ var x = 0;
+ var slide = null;
+ var a = event.detail.action.toLowerCase();
+
+ // Cancel slideshow if running
+ this.cancelSlideShow_();
+
+ switch (a) {
+ case 'first':
+ slide = this.element_.querySelector('.' + SLIDE + ':first-child');
+ break;
+
+ case 'last':
+ x = this.element_.scrollWidth - this.element_.clientWidth;
+ slide = this.element_.querySelector('.' + SLIDE + ':last-child');
+ break;
+
+ case 'scroll-prev':
+ x = Math.max(this.element_.scrollLeft - this.element_.clientWidth, 0);
+ break;
+
+ case 'scroll-next':
+ x = Math.min(this.element_.scrollLeft + this.element_.clientWidth, this.element_.scrollWidth - this.element_.clientWidth);
+ break;
+
+ case 'next':
+ case 'prev':
+ slide = this.element_.querySelector('.' + SLIDE + '[aria-selected]');
+ if (slide) {
+ slide = a === 'next' ? slide.nextElementSibling : slide.previousElementSibling;
+ this.setAriaSelected_(slide);
+ this.emitSelectEvent_(a, null, slide);
+ }
+ return;
+
+ case 'play':
+ (0, _assign2.default)(this.config_, event.detail);
+ this.startSlideShow_();
+ return;
+
+ case 'pause':
+ return;
+
+ default:
+ return;
+ }
+
+ this.animateScroll_(x, undefined, function () {
+ if ('scroll-next' === a || 'scroll-prev' === a) {
+ var slides = _this3.getSlidesInViewport_();
+ if (slides.length > 0) {
+ slide = 'scroll-next' === a ? slides[0] : slides[slides.length - 1];
+ }
+ }
+ _this3.setAriaSelected_(slide);
+ _this3.emitSelectEvent_(a, null, slide);
+ });
+ };
+
+ /**
+ * Handles custom command event, 'scroll-prev', 'scroll-next', 'first', 'last', next, prev, play, pause
+ * @param event. A custom event
+ * @private
+ */
+ MaterialExtCarousel.prototype.commandHandler_ = function (event) {
+ event.preventDefault();
+ event.stopPropagation();
+ if (event.detail && event.detail.action) {
+ this.command_(event);
+ }
+ };
+
+ /**
+ * Handle keypress
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.keyDownHandler_ = function (event) {
+
+ if (event && event.target && event.target !== this.element_) {
+
+ var action = 'first';
+
+ if (event.keyCode === _constants.VK_HOME || event.keyCode === _constants.VK_END || event.keyCode === _constants.VK_PAGE_UP || event.keyCode === _constants.VK_PAGE_DOWN) {
+
+ event.preventDefault();
+ if (event.keyCode === _constants.VK_END) {
+ action = 'last';
+ } else if (event.keyCode === _constants.VK_PAGE_UP) {
+ action = 'scroll-prev';
+ } else if (event.keyCode === _constants.VK_PAGE_DOWN) {
+ action = 'scroll-next';
+ }
+
+ var cmd = new CustomEvent('select', {
+ detail: {
+ action: action
+ }
+ });
+ this.command_(cmd);
+ } else if (event.keyCode === _constants.VK_TAB || event.keyCode === _constants.VK_ENTER || event.keyCode === _constants.VK_SPACE || event.keyCode === _constants.VK_ARROW_UP || event.keyCode === _constants.VK_ARROW_LEFT || event.keyCode === _constants.VK_ARROW_DOWN || event.keyCode === _constants.VK_ARROW_RIGHT) {
+
+ var slide = getSlide_(event.target);
+
+ if (!slide) {
+ return;
+ }
+
+ // Cancel slideshow if running
+ this.cancelSlideShow_();
+
+ switch (event.keyCode) {
+ case _constants.VK_ARROW_UP:
+ case _constants.VK_ARROW_LEFT:
+ action = 'prev';
+ slide = slide.previousElementSibling;
+ break;
+
+ case _constants.VK_ARROW_DOWN:
+ case _constants.VK_ARROW_RIGHT:
+ action = 'next';
+ slide = slide.nextElementSibling;
+ break;
+
+ case _constants.VK_TAB:
+ if (event.shiftKey) {
+ action = 'prev';
+ slide = slide.previousElementSibling;
+ } else {
+ action = 'next';
+ slide = slide.nextElementSibling;
+ }
+ break;
+
+ case _constants.VK_SPACE:
+ case _constants.VK_ENTER:
+ action = 'select';
+ break;
+ }
+
+ if (slide) {
+ event.preventDefault();
+ setFocus_(slide);
+ this.emitSelectEvent_(action, event.keyCode, slide);
+ }
+ }
+ }
+ };
+
+ /**
+ * Handle dragging
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.dragHandler_ = function (event) {
+ var _this4 = this;
+
+ event.preventDefault();
+
+ // Cancel slideshow if running
+ this.cancelSlideShow_();
+
+ var updating = false;
+ var rAFDragId = 0;
+
+ var startX = event.clientX || (event.touches !== undefined ? event.touches[0].clientX : 0);
+ var prevX = startX;
+ var targetElement = event.target;
+
+ var update = function update(e) {
+ var currentX = e.clientX || (e.touches !== undefined ? e.touches[0].clientX : 0);
+ var dx = prevX - currentX;
+
+ if (dx < 0) {
+ _this4.element_.scrollLeft = Math.max(_this4.element_.scrollLeft + dx, 0);
+ } else if (dx > 0) {
+ _this4.element_.scrollLeft = Math.min(_this4.element_.scrollLeft + dx, _this4.element_.scrollWidth - _this4.element_.clientWidth);
+ }
+
+ prevX = currentX;
+ updating = false;
+ };
+
+ // drag handler
+ var drag = function drag(e) {
+ e.preventDefault();
+
+ if (!updating) {
+ rAFDragId = window.requestAnimationFrame(function () {
+ return update(e);
+ });
+ updating = true;
+ }
+ };
+
+ // end drag handler
+ var endDrag = function endDrag(e) {
+ e.preventDefault();
+
+ _this4.element_.removeEventListener('mousemove', drag);
+ _this4.element_.removeEventListener('touchmove', drag);
+ window.removeEventListener('mouseup', endDrag);
+ window.removeEventListener('touchend', endDrag);
+
+ // cancel any existing drag rAF, see: http://www.html5rocks.com/en/tutorials/speed/animations/
+ window.cancelAnimationFrame(rAFDragId);
+
+ var slide = getSlide_(targetElement);
+ setFocus_(slide);
+ _this4.emitSelectEvent_('click', null, slide);
+ };
+
+ this.element_.addEventListener('mousemove', drag);
+ this.element_.addEventListener('touchmove', drag);
+ window.addEventListener('mouseup', endDrag);
+ window.addEventListener('touchend', endDrag);
+ };
+
+ /**
+ * Handle click
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.clickHandler_ = function (event) {
+ // Click is handled by drag
+ event.preventDefault();
+ };
+
+ /**
+ * Handle focus
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.focusHandler_ = function (event) {
+ var slide = getSlide_(event.target);
+ if (slide) {
+ // The last focused/selected slide has 'aria-selected', even if focus is lost
+ this.setAriaSelected_(slide);
+ slide.classList.add(_constants.IS_FOCUSED);
+ }
+ };
+
+ /**
+ * Handle blur
+ * @param event
+ * @private
+ */
+ MaterialExtCarousel.prototype.blurHandler_ = function (event) {
+ var slide = getSlide_(event.target);
+ if (slide) {
+ slide.classList.remove(_constants.IS_FOCUSED);
+ }
+ };
+
+ /**
+ * Emits a custeom 'select' event
+ * @param command
+ * @param keyCode
+ * @param slide
+ * @private
+ */
+ MaterialExtCarousel.prototype.emitSelectEvent_ = function (command, keyCode, slide) {
+
+ if (slide) {
+ this.moveSlideIntoViewport_(slide);
+
+ var evt = new CustomEvent('select', {
+ bubbles: true,
+ cancelable: true,
+ detail: {
+ command: command,
+ keyCode: keyCode,
+ source: slide
+ }
+ });
+ this.element_.dispatchEvent(evt);
+ }
+ };
+
+ /**
+ * Get the first visible slide in component viewport
+ * @private
+ */
+ MaterialExtCarousel.prototype.getSlidesInViewport_ = function () {
+ var carouselRect = this.element_.getBoundingClientRect();
+
+ var slidesInViewport = [].concat((0, _toConsumableArray3.default)(this.element_.querySelectorAll('.' + SLIDE))).filter(function (slide) {
+ var slideRect = slide.getBoundingClientRect();
+ return slideRect.left >= carouselRect.left && slideRect.right <= carouselRect.right;
+ });
+ return slidesInViewport;
+ };
+
+ /**
+ * Move slide into component viewport - if needed
+ * @param slide
+ * @private
+ */
+ MaterialExtCarousel.prototype.moveSlideIntoViewport_ = function (slide) {
+ var carouselRect = this.element_.getBoundingClientRect();
+ var slideRect = slide.getBoundingClientRect();
+
+ if (slideRect.left < carouselRect.left) {
+ var x = this.element_.scrollLeft - (carouselRect.left - slideRect.left);
+ this.animateScroll_(x);
+ } else if (slideRect.right > carouselRect.right) {
+ var _x = this.element_.scrollLeft - (carouselRect.right - slideRect.right);
+ this.animateScroll_(_x);
+ }
+ };
+
+ /**
+ * Removes 'aria-selected' from all slides in carousel
+ * @private
+ */
+ MaterialExtCarousel.prototype.setAriaSelected_ = function (slide) {
+ if (slide) {
+ [].concat((0, _toConsumableArray3.default)(this.element_.querySelectorAll('.' + SLIDE + '[aria-selected]'))).forEach(function (slide) {
+ return slide.removeAttribute('aria-selected');
+ });
+ slide.setAttribute('aria-selected', '');
+ }
+ };
+
+ /**
+ * Removes event listeners
+ * @private
+ */
+ MaterialExtCarousel.prototype.removeListeners_ = function () {
+ this.element_.removeEventListener('focus', this.focusHandler_);
+ this.element_.removeEventListener('blur', this.blurHandler_);
+ this.element_.removeEventListener('keydown', this.keyDownHandler_);
+ this.element_.removeEventListener('mousedown', this.dragHandler_);
+ this.element_.removeEventListener('touchstart', this.dragHandler_);
+ this.element_.removeEventListener('click', this.clickHandler_, false);
+ this.element_.removeEventListener('command', this.commandHandler_);
+ this.element_.removeEventListener('mdl-componentdowngraded', this.mdlDowngrade_);
+ };
+
+ // Helpers
+ var getSlide_ = function getSlide_(element) {
+ return element.closest('.' + SLIDE);
+ };
+
+ var setFocus_ = function setFocus_(slide) {
+ if (slide) {
+ slide.focus();
+ }
+ };
+
+ var addRipple_ = function addRipple_(slide) {
+ if (!slide.querySelector('.' + MDL_RIPPLE_CONTAINER)) {
+ var rippleContainer = document.createElement('span');
+ rippleContainer.classList.add(MDL_RIPPLE_CONTAINER);
+ rippleContainer.classList.add(_constants.MDL_RIPPLE_EFFECT);
+ var ripple = document.createElement('span');
+ ripple.classList.add(_constants.MDL_RIPPLE);
+ rippleContainer.appendChild(ripple);
+
+ var img = slide.querySelector('img');
+ if (img) {
+ // rippleContainer blocks image title
+ rippleContainer.title = img.title;
+ }
+ slide.appendChild(rippleContainer);
+ componentHandler.upgradeElement(rippleContainer, _constants.MDL_RIPPLE_COMPONENT);
+ }
+ };
+ // End helpers
+
+
+ // Public methods.
+
+ /**
+ * Cancel animation - if running.
+ *
+ * @public
+ */
+ MaterialExtCarousel.prototype.stopAnimation = function () {
+ this.config_.animationLoop.stop();
+ };
+ MaterialExtCarousel.prototype['stopAnimation'] = MaterialExtCarousel.prototype.stopAnimation;
+
+ /**
+ * Upgrade slides
+ * Use if more list elements are added later (dynamically)
+ *
+ * @public
+ */
+ MaterialExtCarousel.prototype.upgradeSlides = function () {
+ var _this5 = this;
+
+ var hasRippleEffect = this.element_.classList.contains(_constants.MDL_RIPPLE_EFFECT);
+
+ [].concat((0, _toConsumableArray3.default)(this.element_.querySelectorAll('.' + SLIDE))).forEach(function (slide) {
+
+ slide.setAttribute('role', SLIDE_ROLE);
+
+ if (_this5.config_.interactive) {
+ if (!slide.getAttribute('tabindex')) {
+ slide.setAttribute('tabindex', '0');
+ }
+ if (hasRippleEffect) {
+ addRipple_(slide);
+ }
+ } else {
+ slide.setAttribute('tabindex', '-1');
+ }
+ });
+ };
+ MaterialExtCarousel.prototype['upgradeSlides'] = MaterialExtCarousel.prototype.upgradeSlides;
+
+ /**
+ * Get config object
+ *
+ * @public
+ */
+ MaterialExtCarousel.prototype.getConfig = function () {
+ return this.config_;
+ };
+ MaterialExtCarousel.prototype['getConfig'] = MaterialExtCarousel.prototype.getConfig;
+
+ /**
+ * Initialize component
+ */
+ MaterialExtCarousel.prototype.init = function () {
+
+ if (this.element_) {
+ // Config
+ if (this.element_.hasAttribute('data-config')) {
+ this.config_ = (0, _jsonUtils.jsonStringToObject)(this.element_.getAttribute('data-config'), this.config_);
+ }
+
+ // Wai-Aria
+ this.element_.setAttribute('role', ROLE);
+
+ // Prefer tabindex -1
+ if (!(0, _isInteger2.default)(this.element_.getAttribute('tabindex'))) {
+ this.element_.setAttribute('tabindex', -1);
+ }
+
+ // Remove listeners, just in case ...
+ this.removeListeners_();
+
+ if (this.config_.interactive) {
+
+ // Ripple
+ var hasRippleEffect = this.element_.classList.contains(_constants.MDL_RIPPLE_EFFECT);
+ if (hasRippleEffect) {
+ this.element_.classList.add(_constants.MDL_RIPPLE_EFFECT_IGNORE_EVENTS);
+ }
+
+ // Listen to focus/blur events
+ this.element_.addEventListener('focus', this.focusHandler_.bind(this), true);
+ this.element_.addEventListener('blur', this.blurHandler_.bind(this), true);
+
+ // Listen to keyboard events
+ this.element_.addEventListener('keydown', this.keyDownHandler_.bind(this), false);
+
+ // Listen to drag events
+ this.element_.addEventListener('mousedown', this.dragHandler_.bind(this), false);
+ this.element_.addEventListener('touchstart', this.dragHandler_.bind(this), false);
+
+ // Listen to click events
+ this.element_.addEventListener('click', this.clickHandler_.bind(this), false);
+ }
+
+ // Listen to custom 'command' event
+ this.element_.addEventListener('command', this.commandHandler_.bind(this), false);
+
+ // Listen to 'mdl-componentdowngraded' event
+ this.element_.addEventListener('mdl-componentdowngraded', this.mdlDowngrade_.bind(this));
+
+ // Slides collection
+ this.upgradeSlides();
+
+ // Set upgraded flag
+ this.element_.classList.add(_constants.IS_UPGRADED);
+
+ if (this.config_.autostart) {
+ // Start slideshow
+ this.startSlideShow_();
+ }
+ }
+ };
+
+ /*
+ * Downgrade component
+ * E.g remove listeners and clean up resources
+ */
+ MaterialExtCarousel.prototype.mdlDowngrade_ = function () {
+ 'use strict';
+ //console.log('***** MaterialExtCarousel.mdlDowngrade_');
+
+ // Stop animation - if any
+
+ this.stopAnimation();
+
+ // Remove listeners
+ this.removeListeners_();
+ };
+
+ // The component registers itself. It can assume componentHandler is available
+ // in the global scope.
+ /* eslint no-undef: 0 */
+ componentHandler.register({
+ constructor: MaterialExtCarousel,
+ classAsString: 'MaterialExtCarousel',
+ cssClass: 'mdlext-js-carousel',
+ widget: true
+ });
+})();
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