1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
|
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
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-alpha.6): dropdown.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
var Dropdown = function ($) {
/**
* Check for Popper dependency
* Popper - https://popper.js.org
*/
if (typeof Popper === 'undefined') {
throw new Error('Bootstrap dropdown require Popper.js (https://popper.js.org)');
}
/**
* ------------------------------------------------------------------------
* Constants
* ------------------------------------------------------------------------
*/
var NAME = 'dropdown';
var VERSION = '4.0.0-alpha.6';
var DATA_KEY = 'bs.dropdown';
var EVENT_KEY = '.' + DATA_KEY;
var DATA_API_KEY = '.data-api';
var JQUERY_NO_CONFLICT = $.fn[NAME];
var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key
var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key
var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key
var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key
var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)
var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + '|' + ARROW_DOWN_KEYCODE + '|' + ESCAPE_KEYCODE);
var Event = {
HIDE: 'hide' + EVENT_KEY,
HIDDEN: 'hidden' + EVENT_KEY,
SHOW: 'show' + EVENT_KEY,
SHOWN: 'shown' + EVENT_KEY,
CLICK: 'click' + EVENT_KEY,
CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY,
KEYDOWN_DATA_API: 'keydown' + EVENT_KEY + DATA_API_KEY,
KEYUP_DATA_API: 'keyup' + EVENT_KEY + DATA_API_KEY
};
var ClassName = {
DISABLED: 'disabled',
SHOW: 'show',
DROPUP: 'dropup',
MENURIGHT: 'dropdown-menu-right',
MENULEFT: 'dropdown-menu-left'
};
var Selector = {
DATA_TOGGLE: '[data-toggle="dropdown"]',
FORM_CHILD: '.dropdown form',
MENU: '.dropdown-menu',
NAVBAR_NAV: '.navbar-nav',
VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
};
var AttachmentMap = {
TOP: 'top-start',
TOPEND: 'top-end',
BOTTOM: 'bottom-start',
BOTTOMEND: 'bottom-end'
};
var Default = {
placement: AttachmentMap.BOTTOM,
offset: 0,
flip: true
};
var DefaultType = {
placement: 'string',
offset: '(number|string)',
flip: 'boolean'
/**
* ------------------------------------------------------------------------
* Class Definition
* ------------------------------------------------------------------------
*/
};
var Dropdown = function () {
function Dropdown(element, config) {
_classCallCheck(this, Dropdown);
this._element = element;
this._popper = null;
this._config = this._getConfig(config);
this._menu = this._getMenuElement();
this._inNavbar = this._detectNavbar();
this._addEventListeners();
}
// getters
// public
Dropdown.prototype.toggle = function toggle() {
if (this._element.disabled || $(this._element).hasClass(ClassName.DISABLED)) {
return;
}
var parent = Dropdown._getParentFromElement(this._element);
var isActive = $(this._menu).hasClass(ClassName.SHOW);
Dropdown._clearMenus();
if (isActive) {
return;
}
var relatedTarget = {
relatedTarget: this._element
};
var showEvent = $.Event(Event.SHOW, relatedTarget);
$(parent).trigger(showEvent);
if (showEvent.isDefaultPrevented()) {
return;
}
var element = this._element;
// for dropup with alignment we use the parent as popper container
if ($(parent).hasClass(ClassName.DROPUP)) {
if ($(this._menu).hasClass(ClassName.MENULEFT) || $(this._menu).hasClass(ClassName.MENURIGHT)) {
element = parent;
}
}
this._popper = new Popper(element, this._menu, this._getPopperConfig());
// if this is a touch-enabled device we add extra
// empty mouseover listeners to the body's immediate children;
// only needed because of broken event delegation on iOS
// https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
if ('ontouchstart' in document.documentElement && !$(parent).closest(Selector.NAVBAR_NAV).length) {
$('body').children().on('mouseover', null, $.noop);
}
this._element.focus();
this._element.setAttribute('aria-expanded', true);
$(this._menu).toggleClass(ClassName.SHOW);
$(parent).toggleClass(ClassName.SHOW).trigger($.Event(Event.SHOWN, relatedTarget));
};
Dropdown.prototype.dispose = function dispose() {
$.removeData(this._element, DATA_KEY);
$(this._element).off(EVENT_KEY);
this._element = null;
this._menu = null;
if (this._popper !== null) {
this._popper.destroy();
}
this._popper = null;
};
Dropdown.prototype.update = function update() {
this._inNavbar = this._detectNavbar();
if (this._popper !== null) {
this._popper.scheduleUpdate();
}
};
// private
Dropdown.prototype._addEventListeners = function _addEventListeners() {
var _this = this;
$(this._element).on(Event.CLICK, function (event) {
event.preventDefault();
event.stopPropagation();
_this.toggle();
});
};
Dropdown.prototype._getConfig = function _getConfig(config) {
var elementData = $(this._element).data();
if (elementData.placement !== undefined) {
elementData.placement = AttachmentMap[elementData.placement.toUpperCase()];
}
config = $.extend({}, this.constructor.Default, $(this._element).data(), config);
Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
return config;
};
Dropdown.prototype._getMenuElement = function _getMenuElement() {
if (!this._menu) {
var parent = Dropdown._getParentFromElement(this._element);
this._menu = $(parent).find(Selector.MENU)[0];
}
return this._menu;
};
Dropdown.prototype._getPlacement = function _getPlacement() {
var $parentDropdown = $(this._element).parent();
var placement = this._config.placement;
// Handle dropup
if ($parentDropdown.hasClass(ClassName.DROPUP) || this._config.placement === AttachmentMap.TOP) {
placement = AttachmentMap.TOP;
if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
placement = AttachmentMap.TOPEND;
}
} else if ($(this._menu).hasClass(ClassName.MENURIGHT)) {
placement = AttachmentMap.BOTTOMEND;
}
return placement;
};
Dropdown.prototype._detectNavbar = function _detectNavbar() {
return $(this._element).closest('.navbar').length > 0;
};
Dropdown.prototype._getPopperConfig = function _getPopperConfig() {
var _this2 = this;
var popperConfig = {
placement: this._getPlacement(),
modifiers: {
offset: {
offset: this._config.offset
},
flip: {
enabled: this._config.flip
}
}
};
if (this._inNavbar) {
popperConfig.modifiers.AfterApplyStyle = {
enabled: true,
order: 901, // ApplyStyle order + 1
fn: function fn() {
// reset Popper styles
$(_this2._menu).attr('style', '');
}
};
}
return popperConfig;
};
// static
Dropdown._jQueryInterface = function _jQueryInterface(config) {
return this.each(function () {
var data = $(this).data(DATA_KEY);
var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' ? config : null;
if (!data) {
data = new Dropdown(this, _config);
$(this).data(DATA_KEY, data);
}
if (typeof config === 'string') {
if (data[config] === undefined) {
throw new Error('No method named "' + config + '"');
}
data[config]();
}
});
};
Dropdown._clearMenus = function _clearMenus(event) {
if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
return;
}
var toggles = $.makeArray($(Selector.DATA_TOGGLE));
for (var i = 0; i < toggles.length; i++) {
var parent = Dropdown._getParentFromElement(toggles[i]);
var context = $(toggles[i]).data(DATA_KEY);
var relatedTarget = {
relatedTarget: toggles[i]
};
if (!context) {
continue;
}
var dropdownMenu = context._menu;
if (!$(parent).hasClass(ClassName.SHOW)) {
continue;
}
if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $.contains(parent, event.target)) {
continue;
}
var hideEvent = $.Event(Event.HIDE, relatedTarget);
$(parent).trigger(hideEvent);
if (hideEvent.isDefaultPrevented()) {
continue;
}
// if this is a touch-enabled device we remove the extra
// empty mouseover listeners we added for iOS support
if ('ontouchstart' in document.documentElement) {
$('body').children().off('mouseover', null, $.noop);
}
toggles[i].setAttribute('aria-expanded', 'false');
$(dropdownMenu).removeClass(ClassName.SHOW);
$(parent).removeClass(ClassName.SHOW).trigger($.Event(Event.HIDDEN, relatedTarget));
}
};
Dropdown._getParentFromElement = function _getParentFromElement(element) {
var parent = void 0;
var selector = Util.getSelectorFromElement(element);
if (selector) {
parent = $(selector)[0];
}
return parent || element.parentNode;
};
Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
if (!REGEXP_KEYDOWN.test(event.which) || /button/i.test(event.target.tagName) && event.which === SPACE_KEYCODE || /input|textarea/i.test(event.target.tagName)) {
return;
}
event.preventDefault();
event.stopPropagation();
if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {
return;
}
var parent = Dropdown._getParentFromElement(this);
var isActive = $(parent).hasClass(ClassName.SHOW);
if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
if (event.which === ESCAPE_KEYCODE) {
var toggle = $(parent).find(Selector.DATA_TOGGLE)[0];
$(toggle).trigger('focus');
}
$(this).trigger('click');
return;
}
var items = $(parent).find(Selector.VISIBLE_ITEMS).get();
if (!items.length) {
return;
}
var index = items.indexOf(event.target);
if (event.which === ARROW_UP_KEYCODE && index > 0) {
// up
index--;
}
if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
// down
index++;
}
if (index < 0) {
index = 0;
}
items[index].focus();
};
_createClass(Dropdown, null, [{
key: 'VERSION',
get: function get() {
return VERSION;
}
}, {
key: 'Default',
get: function get() {
return Default;
}
}, {
key: 'DefaultType',
get: function get() {
return DefaultType;
}
}]);
return Dropdown;
}();
/**
* ------------------------------------------------------------------------
* Data Api implementation
* ------------------------------------------------------------------------
*/
$(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API + ' ' + Event.KEYUP_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
event.preventDefault();
event.stopPropagation();
Dropdown._jQueryInterface.call($(this), 'toggle');
}).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
e.stopPropagation();
}
/**
* ------------------------------------------------------------------------
* jQuery
* ------------------------------------------------------------------------
*/
);$.fn[NAME] = Dropdown._jQueryInterface;
$.fn[NAME].Constructor = Dropdown;
$.fn[NAME].noConflict = function () {
$.fn[NAME] = JQUERY_NO_CONFLICT;
return Dropdown._jQueryInterface;
};
return Dropdown;
}(jQuery); /* global Popper */
//# sourceMappingURL=dropdown.js.map
|