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Diffstat (limited to 'js/dist/scrollspy.js')
| -rw-r--r-- | js/dist/scrollspy.js | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/js/dist/scrollspy.js b/js/dist/scrollspy.js new file mode 100644 index 0000000000..b214f86eeb --- /dev/null +++ b/js/dist/scrollspy.js @@ -0,0 +1,315 @@ +'use strict'; + +var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); + +function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } + +/** + * -------------------------------------------------------------------------- + * Bootstrap (v4.0.0): scrollspy.js + * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) + * -------------------------------------------------------------------------- + */ + +var ScrollSpy = (function ($) { + + /** + * ------------------------------------------------------------------------ + * Constants + * ------------------------------------------------------------------------ + */ + + var NAME = 'scrollspy'; + var VERSION = '4.0.0'; + var DATA_KEY = 'bs.scrollspy'; + var EVENT_KEY = '.' + DATA_KEY; + var DATA_API_KEY = '.data-api'; + var JQUERY_NO_CONFLICT = $.fn[NAME]; + + var Default = { + offset: 10, + method: 'auto', + target: '' + }; + + var DefaultType = { + offset: 'number', + method: 'string', + target: '(string|element)' + }; + + var Event = { + ACTIVATE: 'activate' + EVENT_KEY, + SCROLL: 'scroll' + EVENT_KEY, + LOAD_DATA_API: 'load' + EVENT_KEY + '' + DATA_API_KEY + }; + + var ClassName = { + DROPDOWN_MENU: 'dropdown-menu', + ACTIVE: 'active' + }; + + var Selector = { + DATA_SPY: '[data-spy="scroll"]', + ACTIVE: '.active', + LI: 'li', + LI_DROPDOWN: 'li.dropdown', + NAV_ANCHORS: '.nav li > a' + }; + + var OffsetMethod = { + OFFSET: 'offset', + POSITION: 'position' + }; + + /** + * ------------------------------------------------------------------------ + * Class Definition + * ------------------------------------------------------------------------ + */ + + var ScrollSpy = (function () { + function ScrollSpy(element, config) { + _classCallCheck(this, ScrollSpy); + + this._element = element; + this._scrollElement = element.tagName === 'BODY' ? window : element; + this._config = this._getConfig(config); + this._selector = '' + this._config.target + ' ' + Selector.NAV_ANCHORS; + this._offsets = []; + this._targets = []; + this._activeTarget = null; + this._scrollHeight = 0; + + $(this._scrollElement).on(Event.SCROLL, $.proxy(this._process, this)); + + this.refresh(); + this._process(); + } + + _createClass(ScrollSpy, [{ + key: 'refresh', + + // public + + value: function refresh() { + var _this = this; + + var autoMethod = this._scrollElement !== this._scrollElement.window ? OffsetMethod.POSITION : OffsetMethod.OFFSET; + + var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method; + + var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0; + + this._offsets = []; + this._targets = []; + + this._scrollHeight = this._getScrollHeight(); + + var targets = $.makeArray($(this._selector)); + + targets.map(function (element) { + var target = undefined; + var targetSelector = Util.getSelectorFromElement(element); + + if (targetSelector) { + target = $(targetSelector)[0]; + } + + if (target && (target.offsetWidth || target.offsetHeight)) { + // todo (fat): remove sketch reliance on jQuery position/offset + return [$(target)[offsetMethod]().top + offsetBase, targetSelector]; + } + }).filter(function (item) { + return item; + }).sort(function (a, b) { + return a[0] - b[0]; + }).forEach(function (item) { + _this._offsets.push(item[0]); + _this._targets.push(item[1]); + }); + } + }, { + key: 'dispose', + value: function dispose() { + $.removeData(this._element, DATA_KEY); + $(this._scrollElement).off(EVENT_KEY); + + this._element = null; + this._scrollElement = null; + this._config = null; + this._selector = null; + this._offsets = null; + this._targets = null; + this._activeTarget = null; + this._scrollHeight = null; + } + }, { + key: '_getConfig', + + // private + + value: function _getConfig(config) { + config = $.extend({}, Default, config); + + if (typeof config.target !== 'string') { + var id = $(config.target).attr('id'); + if (!id) { + id = Util.getUID(NAME); + $(config.target).attr('id', id); + } + config.target = '#' + id; + } + + Util.typeCheckConfig(NAME, config, DefaultType); + + return config; + } + }, { + key: '_getScrollTop', + value: function _getScrollTop() { + return this._scrollElement === window ? this._scrollElement.scrollY : this._scrollElement.scrollTop; + } + }, { + key: '_getScrollHeight', + value: function _getScrollHeight() { + return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight); + } + }, { + key: '_process', + value: function _process() { + var scrollTop = this._getScrollTop() + this._config.offset; + var scrollHeight = this._getScrollHeight(); + var maxScroll = this._config.offset + scrollHeight - this._scrollElement.offsetHeight; + + if (this._scrollHeight !== scrollHeight) { + this.refresh(); + } + + if (scrollTop >= maxScroll) { + var target = this._targets[this._targets.length - 1]; + + if (this._activeTarget !== target) { + this._activate(target); + } + } + + if (this._activeTarget && scrollTop < this._offsets[0]) { + this._activeTarget = null; + this._clear(); + return; + } + + for (var i = this._offsets.length; i--;) { + var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (this._offsets[i + 1] === undefined || scrollTop < this._offsets[i + 1]); + + if (isActiveTarget) { + this._activate(this._targets[i]); + } + } + } + }, { + key: '_activate', + value: function _activate(target) { + this._activeTarget = target; + + this._clear(); + + var selector = '' + this._selector + '[data-target="' + target + '"],' + ('' + this._selector + '[href="' + target + '"]'); + + // todo (fat): getting all the raw li's up the tree is not great. + var parentListItems = $(selector).parents(Selector.LI); + + for (var i = parentListItems.length; i--;) { + $(parentListItems[i]).addClass(ClassName.ACTIVE); + + var itemParent = parentListItems[i].parentNode; + + if (itemParent && $(itemParent).hasClass(ClassName.DROPDOWN_MENU)) { + var closestDropdown = $(itemParent).closest(Selector.LI_DROPDOWN)[0]; + $(closestDropdown).addClass(ClassName.ACTIVE); + } + } + + $(this._scrollElement).trigger(Event.ACTIVATE, { + relatedTarget: target + }); + } + }, { + key: '_clear', + value: function _clear() { + var activeParents = $(this._selector).parentsUntil(this._config.target, Selector.ACTIVE); + + for (var i = activeParents.length; i--;) { + $(activeParents[i]).removeClass(ClassName.ACTIVE); + } + } + }], [{ + key: 'VERSION', + + // getters + + get: function () { + return VERSION; + } + }, { + key: 'Default', + get: function () { + return Default; + } + }, { + key: '_jQueryInterface', + + // static + + value: function _jQueryInterface(config) { + return this.each(function () { + var data = $(this).data(DATA_KEY); + var _config = typeof config === 'object' && config || null; + + if (!data) { + data = new ScrollSpy(this, _config); + $(this).data(DATA_KEY, data); + } + + if (typeof config === 'string') { + data[config](); + } + }); + } + }]); + + return ScrollSpy; + })(); + + /** + * ------------------------------------------------------------------------ + * Data Api implementation + * ------------------------------------------------------------------------ + */ + + $(window).on(Event.LOAD_DATA_API, function () { + var scrollSpys = $.makeArray($(Selector.DATA_SPY)); + + for (var i = scrollSpys.length; i--;) { + var $spy = $(scrollSpys[i]); + ScrollSpy._jQueryInterface.call($spy, $spy.data()); + } + }); + + /** + * ------------------------------------------------------------------------ + * jQuery + * ------------------------------------------------------------------------ + */ + + $.fn[NAME] = ScrollSpy._jQueryInterface; + $.fn[NAME].Constructor = ScrollSpy; + $.fn[NAME].noConflict = function () { + $.fn[NAME] = JQUERY_NO_CONFLICT; + return ScrollSpy._jQueryInterface; + }; + + return ScrollSpy; +})(jQuery); +//# sourceMappingURL=scrollspy.js.map
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