mirror of
https://github.com/twbs/bootstrap.git
synced 2024-12-01 13:24:25 +01:00
411 lines
15 KiB
JavaScript
411 lines
15 KiB
JavaScript
/*!
|
|
* Bootstrap scrollspy.js v5.0.0-alpha1 (https://getbootstrap.com/)
|
|
* Copyright 2011-2020 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
|
|
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
|
|
*/
|
|
(function (global, factory) {
|
|
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./dom/data.js'), require('./dom/event-handler.js'), require('./dom/manipulator.js'), require('./dom/selector-engine.js')) :
|
|
typeof define === 'function' && define.amd ? define(['./dom/data.js', './dom/event-handler.js', './dom/manipulator.js', './dom/selector-engine.js'], factory) :
|
|
(global = global || self, global.ScrollSpy = factory(global.Data, global.EventHandler, global.Manipulator, global.SelectorEngine));
|
|
}(this, (function (Data, EventHandler, Manipulator, SelectorEngine) { 'use strict';
|
|
|
|
Data = Data && Object.prototype.hasOwnProperty.call(Data, 'default') ? Data['default'] : Data;
|
|
EventHandler = EventHandler && Object.prototype.hasOwnProperty.call(EventHandler, 'default') ? EventHandler['default'] : EventHandler;
|
|
Manipulator = Manipulator && Object.prototype.hasOwnProperty.call(Manipulator, 'default') ? Manipulator['default'] : Manipulator;
|
|
SelectorEngine = SelectorEngine && Object.prototype.hasOwnProperty.call(SelectorEngine, 'default') ? SelectorEngine['default'] : SelectorEngine;
|
|
|
|
/**
|
|
* --------------------------------------------------------------------------
|
|
* Bootstrap (v5.0.0-alpha1): util/index.js
|
|
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
|
|
* --------------------------------------------------------------------------
|
|
*/
|
|
var MAX_UID = 1000000;
|
|
|
|
var toType = function toType(obj) {
|
|
if (obj === null || obj === undefined) {
|
|
return "" + obj;
|
|
}
|
|
|
|
return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
|
|
};
|
|
/**
|
|
* --------------------------------------------------------------------------
|
|
* Public Util Api
|
|
* --------------------------------------------------------------------------
|
|
*/
|
|
|
|
|
|
var getUID = function getUID(prefix) {
|
|
do {
|
|
prefix += Math.floor(Math.random() * MAX_UID);
|
|
} while (document.getElementById(prefix));
|
|
|
|
return prefix;
|
|
};
|
|
|
|
var getSelector = function getSelector(element) {
|
|
var selector = element.getAttribute('data-target');
|
|
|
|
if (!selector || selector === '#') {
|
|
var hrefAttr = element.getAttribute('href');
|
|
selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
|
|
}
|
|
|
|
return selector;
|
|
};
|
|
|
|
var getSelectorFromElement = function getSelectorFromElement(element) {
|
|
var selector = getSelector(element);
|
|
|
|
if (selector) {
|
|
return document.querySelector(selector) ? selector : null;
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
var isElement = function isElement(obj) {
|
|
return (obj[0] || obj).nodeType;
|
|
};
|
|
|
|
var typeCheckConfig = function typeCheckConfig(componentName, config, configTypes) {
|
|
Object.keys(configTypes).forEach(function (property) {
|
|
var expectedTypes = configTypes[property];
|
|
var value = config[property];
|
|
var valueType = value && isElement(value) ? 'element' : toType(value);
|
|
|
|
if (!new RegExp(expectedTypes).test(valueType)) {
|
|
throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
|
|
}
|
|
});
|
|
};
|
|
|
|
var getjQuery = function getjQuery() {
|
|
var _window = window,
|
|
jQuery = _window.jQuery;
|
|
|
|
if (jQuery && !document.body.hasAttribute('data-no-jquery')) {
|
|
return jQuery;
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
|
|
|
|
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
|
|
|
|
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
|
|
|
|
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); } }
|
|
|
|
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Constants
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
var NAME = 'scrollspy';
|
|
var VERSION = '5.0.0-alpha1';
|
|
var DATA_KEY = 'bs.scrollspy';
|
|
var EVENT_KEY = "." + DATA_KEY;
|
|
var DATA_API_KEY = '.data-api';
|
|
var Default = {
|
|
offset: 10,
|
|
method: 'auto',
|
|
target: ''
|
|
};
|
|
var DefaultType = {
|
|
offset: 'number',
|
|
method: 'string',
|
|
target: '(string|element)'
|
|
};
|
|
var EVENT_ACTIVATE = "activate" + EVENT_KEY;
|
|
var EVENT_SCROLL = "scroll" + EVENT_KEY;
|
|
var EVENT_LOAD_DATA_API = "load" + EVENT_KEY + DATA_API_KEY;
|
|
var CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';
|
|
var CLASS_NAME_ACTIVE = 'active';
|
|
var SELECTOR_DATA_SPY = '[data-spy="scroll"]';
|
|
var SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
|
|
var SELECTOR_NAV_LINKS = '.nav-link';
|
|
var SELECTOR_NAV_ITEMS = '.nav-item';
|
|
var SELECTOR_LIST_ITEMS = '.list-group-item';
|
|
var SELECTOR_DROPDOWN = '.dropdown';
|
|
var SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
|
|
var METHOD_OFFSET = 'offset';
|
|
var METHOD_POSITION = 'position';
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Class Definition
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
var ScrollSpy = /*#__PURE__*/function () {
|
|
function ScrollSpy(element, config) {
|
|
var _this = this;
|
|
|
|
this._element = element;
|
|
this._scrollElement = element.tagName === 'BODY' ? window : element;
|
|
this._config = this._getConfig(config);
|
|
this._selector = this._config.target + " " + SELECTOR_NAV_LINKS + "," + (this._config.target + " " + SELECTOR_LIST_ITEMS + ",") + (this._config.target + " ." + CLASS_NAME_DROPDOWN_ITEM);
|
|
this._offsets = [];
|
|
this._targets = [];
|
|
this._activeTarget = null;
|
|
this._scrollHeight = 0;
|
|
EventHandler.on(this._scrollElement, EVENT_SCROLL, function (event) {
|
|
return _this._process(event);
|
|
});
|
|
this.refresh();
|
|
|
|
this._process();
|
|
|
|
Data.setData(element, DATA_KEY, this);
|
|
} // Getters
|
|
|
|
|
|
var _proto = ScrollSpy.prototype;
|
|
|
|
// Public
|
|
_proto.refresh = function refresh() {
|
|
var _this2 = this;
|
|
|
|
var autoMethod = this._scrollElement === this._scrollElement.window ? METHOD_OFFSET : METHOD_POSITION;
|
|
var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
|
|
var offsetBase = offsetMethod === METHOD_POSITION ? this._getScrollTop() : 0;
|
|
this._offsets = [];
|
|
this._targets = [];
|
|
this._scrollHeight = this._getScrollHeight();
|
|
var targets = SelectorEngine.find(this._selector);
|
|
targets.map(function (element) {
|
|
var target;
|
|
var targetSelector = getSelectorFromElement(element);
|
|
|
|
if (targetSelector) {
|
|
target = SelectorEngine.findOne(targetSelector);
|
|
}
|
|
|
|
if (target) {
|
|
var targetBCR = target.getBoundingClientRect();
|
|
|
|
if (targetBCR.width || targetBCR.height) {
|
|
return [Manipulator[offsetMethod](target).top + offsetBase, targetSelector];
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}).filter(function (item) {
|
|
return item;
|
|
}).sort(function (a, b) {
|
|
return a[0] - b[0];
|
|
}).forEach(function (item) {
|
|
_this2._offsets.push(item[0]);
|
|
|
|
_this2._targets.push(item[1]);
|
|
});
|
|
};
|
|
|
|
_proto.dispose = function dispose() {
|
|
Data.removeData(this._element, DATA_KEY);
|
|
EventHandler.off(this._scrollElement, 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;
|
|
} // Private
|
|
;
|
|
|
|
_proto._getConfig = function _getConfig(config) {
|
|
config = _objectSpread(_objectSpread({}, Default), typeof config === 'object' && config ? config : {});
|
|
|
|
if (typeof config.target !== 'string' && isElement(config.target)) {
|
|
var id = config.target.id;
|
|
|
|
if (!id) {
|
|
id = getUID(NAME);
|
|
config.target.id = id;
|
|
}
|
|
|
|
config.target = "#" + id;
|
|
}
|
|
|
|
typeCheckConfig(NAME, config, DefaultType);
|
|
return config;
|
|
};
|
|
|
|
_proto._getScrollTop = function _getScrollTop() {
|
|
return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
|
|
};
|
|
|
|
_proto._getScrollHeight = function _getScrollHeight() {
|
|
return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
|
|
};
|
|
|
|
_proto._getOffsetHeight = function _getOffsetHeight() {
|
|
return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
|
|
};
|
|
|
|
_proto._process = function _process() {
|
|
var scrollTop = this._getScrollTop() + this._config.offset;
|
|
|
|
var scrollHeight = this._getScrollHeight();
|
|
|
|
var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
|
|
|
|
if (this._scrollHeight !== scrollHeight) {
|
|
this.refresh();
|
|
}
|
|
|
|
if (scrollTop >= maxScroll) {
|
|
var target = this._targets[this._targets.length - 1];
|
|
|
|
if (this._activeTarget !== target) {
|
|
this._activate(target);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 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] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
|
|
|
|
if (isActiveTarget) {
|
|
this._activate(this._targets[i]);
|
|
}
|
|
}
|
|
};
|
|
|
|
_proto._activate = function _activate(target) {
|
|
this._activeTarget = target;
|
|
|
|
this._clear();
|
|
|
|
var queries = this._selector.split(',').map(function (selector) {
|
|
return selector + "[data-target=\"" + target + "\"]," + selector + "[href=\"" + target + "\"]";
|
|
});
|
|
|
|
var link = SelectorEngine.findOne(queries.join(','));
|
|
|
|
if (link.classList.contains(CLASS_NAME_DROPDOWN_ITEM)) {
|
|
SelectorEngine.findOne(SELECTOR_DROPDOWN_TOGGLE, link.closest(SELECTOR_DROPDOWN)).classList.add(CLASS_NAME_ACTIVE);
|
|
link.classList.add(CLASS_NAME_ACTIVE);
|
|
} else {
|
|
// Set triggered link as active
|
|
link.classList.add(CLASS_NAME_ACTIVE);
|
|
SelectorEngine.parents(link, SELECTOR_NAV_LIST_GROUP).forEach(function (listGroup) {
|
|
// Set triggered links parents as active
|
|
// With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
|
|
SelectorEngine.prev(listGroup, SELECTOR_NAV_LINKS + ", " + SELECTOR_LIST_ITEMS).forEach(function (item) {
|
|
return item.classList.add(CLASS_NAME_ACTIVE);
|
|
}); // Handle special case when .nav-link is inside .nav-item
|
|
|
|
SelectorEngine.prev(listGroup, SELECTOR_NAV_ITEMS).forEach(function (navItem) {
|
|
SelectorEngine.children(navItem, SELECTOR_NAV_LINKS).forEach(function (item) {
|
|
return item.classList.add(CLASS_NAME_ACTIVE);
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
EventHandler.trigger(this._scrollElement, EVENT_ACTIVATE, {
|
|
relatedTarget: target
|
|
});
|
|
};
|
|
|
|
_proto._clear = function _clear() {
|
|
SelectorEngine.find(this._selector).filter(function (node) {
|
|
return node.classList.contains(CLASS_NAME_ACTIVE);
|
|
}).forEach(function (node) {
|
|
return node.classList.remove(CLASS_NAME_ACTIVE);
|
|
});
|
|
} // Static
|
|
;
|
|
|
|
ScrollSpy.jQueryInterface = function jQueryInterface(config) {
|
|
return this.each(function () {
|
|
var data = Data.getData(this, DATA_KEY);
|
|
|
|
var _config = typeof config === 'object' && config;
|
|
|
|
if (!data) {
|
|
data = new ScrollSpy(this, _config);
|
|
}
|
|
|
|
if (typeof config === 'string') {
|
|
if (typeof data[config] === 'undefined') {
|
|
throw new TypeError("No method named \"" + config + "\"");
|
|
}
|
|
|
|
data[config]();
|
|
}
|
|
});
|
|
};
|
|
|
|
ScrollSpy.getInstance = function getInstance(element) {
|
|
return Data.getData(element, DATA_KEY);
|
|
};
|
|
|
|
_createClass(ScrollSpy, null, [{
|
|
key: "VERSION",
|
|
get: function get() {
|
|
return VERSION;
|
|
}
|
|
}, {
|
|
key: "Default",
|
|
get: function get() {
|
|
return Default;
|
|
}
|
|
}]);
|
|
|
|
return ScrollSpy;
|
|
}();
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* Data Api implementation
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
|
|
EventHandler.on(window, EVENT_LOAD_DATA_API, function () {
|
|
SelectorEngine.find(SELECTOR_DATA_SPY).forEach(function (spy) {
|
|
return new ScrollSpy(spy, Manipulator.getDataAttributes(spy));
|
|
});
|
|
});
|
|
var $ = getjQuery();
|
|
/**
|
|
* ------------------------------------------------------------------------
|
|
* jQuery
|
|
* ------------------------------------------------------------------------
|
|
*/
|
|
|
|
/* istanbul ignore if */
|
|
|
|
if ($) {
|
|
var JQUERY_NO_CONFLICT = $.fn[NAME];
|
|
$.fn[NAME] = ScrollSpy.jQueryInterface;
|
|
$.fn[NAME].Constructor = ScrollSpy;
|
|
|
|
$.fn[NAME].noConflict = function () {
|
|
$.fn[NAME] = JQUERY_NO_CONFLICT;
|
|
return ScrollSpy.jQueryInterface;
|
|
};
|
|
}
|
|
|
|
return ScrollSpy;
|
|
|
|
})));
|
|
//# sourceMappingURL=scrollspy.js.map
|