mirror of
https://github.com/twbs/bootstrap.git
synced 2024-12-13 01:08:58 +01:00
335 lines
10 KiB
JavaScript
335 lines
10 KiB
JavaScript
(function (global, factory) {
|
|
if (typeof define === 'function' && define.amd) {
|
|
define(['exports', 'module', './util'], factory);
|
|
} else if (typeof exports !== 'undefined' && typeof module !== 'undefined') {
|
|
factory(exports, module, require('./util'));
|
|
} else {
|
|
var mod = {
|
|
exports: {}
|
|
};
|
|
factory(mod.exports, mod, global.Util);
|
|
global.scrollspy = mod.exports;
|
|
}
|
|
})(this, function (exports, module, _util) {
|
|
'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 _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
|
|
|
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
|
|
|
|
var _Util = _interopRequireDefault(_util);
|
|
|
|
/**
|
|
* --------------------------------------------------------------------------
|
|
* 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['default'].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['default'].getUID(NAME);
|
|
$(config.target).attr('id', id);
|
|
}
|
|
config.target = '#' + id;
|
|
}
|
|
|
|
_Util['default'].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: '_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]();
|
|
}
|
|
});
|
|
}
|
|
}, {
|
|
key: 'VERSION',
|
|
|
|
// getters
|
|
|
|
get: function () {
|
|
return VERSION;
|
|
}
|
|
}, {
|
|
key: 'Default',
|
|
get: function () {
|
|
return Default;
|
|
}
|
|
}]);
|
|
|
|
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);
|
|
|
|
module.exports = ScrollSpy;
|
|
});
|