forked from ktquez/vue-head
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathvue-head-es6.js
240 lines (218 loc) · 5.32 KB
/
vue-head-es6.js
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
/* eslint-disable */
;(() => {
'use strict'
const opt = {
complement: window.document.title,
separator: '|'
}
const diffTitle = {}
let els = []
let diffEls = []
let installed = false
const util = {
/**
* Shorthand
* @type {Object}
*/
shorthand: {
ch: 'charset',
tg: 'target',
n: 'name',
he: 'http-equiv',
ip: 'itemprop',
c: 'content',
p: 'property',
sc: 'scheme',
r: 'rel',
h: 'href',
sz: 'sizes',
t: 'type',
s: 'src',
a: 'async',
d: 'defer',
i: 'inner'
},
/**
* This function return the element <head>
* @type {Function}
* @return {Object}
*/
getPlace (place) {
return window.document.getElementsByTagName(place)[0]
},
/**
* Undo the window.document title for previous state
* @type {Function}
* @param {Object} state
*/
undoTitle (state) {
if (!state.before) return
window.document.title = state.before
},
/**
* Undo elements to its previous state
* @type {Function}
*/
undo () {
if (!els.length) return
els.map(el => {
el.parentElement.removeChild(el)
})
els = []
},
/**
* Set attributes in element
* @type {Function}
* @param {Object} obj
* @param {HTMLElement} el
* @return {HTMLElement} with defined attributes
*/
prepareElement (obj, el) {
Object.keys(obj).map(prop => {
let sh = (this.shorthand[prop] || prop)
if (sh.match(/(body|undo|replace)/g)) return
if (sh === 'inner') {
el.textContent = obj[prop]
return
}
el.setAttribute(sh, obj[prop])
})
return el
},
/**
* Change window.document title
* @type {Function}
* @param {Object} val
*/
title (val) {
if (!val) return
diffTitle.before = opt.complement
window.document.title = `${val.inner} ${val.separator || opt.separator} ${val.complement || opt.complement}`
},
update () {
if (!els.length) return
els.forEach((el, key) => {
if (diffEls[key] && !diffEls[key].isEqualNode(el)) {
el.parentElement.replaceChild(diffEls[key], els[key])
els.splice(key, 1, diffEls[key])
return
}
})
diffEls = []
},
add (obj, el, parent) {
parent.appendChild(el)
// Fixed elements that do not suffer removal
if (obj.undo !== undefined && !obj.undo) return
// Elements which are removed
els.push(el)
},
/**
* Handle of create elements
* @type {Function}
* @param {Array} arr
* @param {String} tag - style, link, meta, script, base
* @param {String} place - Default 'head'
* @param {Boolean} update
*/
handle (arr, tag, place, update) {
if (!arr) return
arr.map(obj => {
let parent = (obj.body) ? this.getPlace('body') : this.getPlace(place)
let el = window.document.getElementById(obj.id) || window.document.createElement(tag)
// Elements that will substitute data
if (el.hasAttribute('id') || obj.id) {
this.prepareElement(obj, el)
return
}
// Other elements
this.prepareElement(obj, el)
// Updated elements
if (update) {
diffEls.push(el)
return
}
// Add elements in Node
this.add(obj, el, parent)
})
}
}
/**
* Plugin | vue-head
* @param {Function} Vue
* @param {Object} options
*/
const VueHead = (Vue, options) => {
if (installed) return
installed = true
if (options) {
Vue.util.extend(opt, options)
}
function init (update) {
let head = this.$options.head
if (!head) return
Object.keys(head).map(key => {
let prop = head[key]
if (!prop) return
let obj = (typeof prop === 'function') ? head[key].bind(this)() : head[key]
if (key === 'title') {
util[key](obj)
return
}
util.handle(obj, key, 'head', update)
})
this.$emit('okHead')
}
function destroy (head) {
if (!this.$options.head) return
util.undoTitle(diffTitle)
util.undo()
}
// v1
if (Vue.version.match(/[1].(.)+/g)) {
Vue.mixin({
ready () {
init.bind(this)()
},
destroyed () {
destroy(this.$options.head)
},
events: {
updateHead () {
init.bind(this)(true)
util.update()
}
}
})
}
// v2
if (Vue.version.match(/[2].(.)+/g)) {
Vue.mixin({
created () {
this.$on('updateHead', () => {
init.bind(this)(true)
util.update()
})
},
mounted () {
init.bind(this)()
},
beforeDestroy () {
destroy.bind(this)()
}
})
}
}
VueHead.version = '2.0.10'
// auto install
if (typeof Vue !== 'undefined') {
Vue.use(VueHead)
}
if(typeof exports === 'object' && typeof module === 'object') {
module.exports = VueHead
} else if(typeof define === 'function' && define.amd) {
define(function () { return VueHead })
} else if (typeof window !== 'undefined') {
window.VueHead = VueHead
}
})()