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
|
import utils from './utils';
import { SELECTED_CLASS, IGNORE_CLASS } from './constants';
class DropDown {
constructor(list, config = { }) {
this.currentIndex = 0;
this.hidden = true;
this.list = typeof list === 'string' ? document.querySelector(list) : list;
this.items = [];
this.eventWrapper = {};
this.hideOnClick = config.hideOnClick !== false;
if (config.addActiveClassToDropdownButton) {
this.dropdownToggle = this.list.parentNode.querySelector('.js-dropdown-toggle');
}
this.getItems();
this.initTemplateString();
this.addEvents();
this.initialState = list.innerHTML;
}
getItems() {
this.items = [].slice.call(this.list.querySelectorAll('li'));
return this.items;
}
initTemplateString() {
const items = this.items || this.getItems();
let templateString = '';
if (items.length > 0) templateString = items[items.length - 1].outerHTML;
this.templateString = templateString;
return this.templateString;
}
clickEvent(e) {
if (e.target.tagName === 'UL') return;
if (e.target.closest(`.${IGNORE_CLASS}`)) return;
const selected = e.target.closest('li');
if (!selected) return;
this.addSelectedClass(selected);
e.preventDefault();
if (this.hideOnClick) {
this.hide();
}
const listEvent = new CustomEvent('click.dl', {
detail: {
list: this,
selected,
data: e.target.dataset,
},
});
this.list.dispatchEvent(listEvent);
}
addSelectedClass(selected) {
this.removeSelectedClasses();
selected.classList.add(SELECTED_CLASS);
}
removeSelectedClasses() {
const items = this.items || this.getItems();
items.forEach(item => item.classList.remove(SELECTED_CLASS));
}
addEvents() {
this.eventWrapper.clickEvent = this.clickEvent.bind(this);
this.eventWrapper.closeDropdown = this.closeDropdown.bind(this);
this.list.addEventListener('click', this.eventWrapper.clickEvent);
this.list.addEventListener('keyup', this.eventWrapper.closeDropdown);
}
closeDropdown(event) {
// `ESC` key closes the dropdown.
if (event.keyCode === 27) {
event.preventDefault();
return this.toggle();
}
return true;
}
setData(data) {
this.data = data;
this.render(data);
}
addData(data) {
this.data = (this.data || []).concat(data);
this.render(this.data);
}
render(data) {
const children = data ? data.map(this.renderChildren.bind(this)) : [];
const renderableList = this.list.querySelector('ul[data-dynamic]') || this.list;
renderableList.innerHTML = children.join('');
const listEvent = new CustomEvent('render.dl', {
detail: {
list: this,
},
});
this.list.dispatchEvent(listEvent);
}
renderChildren(data) {
const html = utils.template(this.templateString, data);
const template = document.createElement('div');
template.innerHTML = html;
DropDown.setImagesSrc(template);
template.firstChild.style.display = data.droplab_hidden ? 'none' : 'block';
return template.firstChild.outerHTML;
}
show() {
if (!this.hidden) return;
this.list.style.display = 'block';
this.currentIndex = 0;
this.hidden = false;
if (this.dropdownToggle) this.dropdownToggle.classList.add('active');
}
hide() {
if (this.hidden) return;
this.list.style.display = 'none';
this.currentIndex = 0;
this.hidden = true;
if (this.dropdownToggle) this.dropdownToggle.classList.remove('active');
}
toggle() {
if (this.hidden) return this.show();
return this.hide();
}
destroy() {
this.hide();
this.list.removeEventListener('click', this.eventWrapper.clickEvent);
this.list.removeEventListener('keyup', this.eventWrapper.closeDropdown);
}
static setImagesSrc(template) {
const images = [...template.querySelectorAll('img[data-src]')];
images.forEach((image) => {
const img = image;
img.src = img.getAttribute('data-src');
img.removeAttribute('data-src');
});
}
}
export default DropDown;
|
