CollapseTransition.vue
2.37 KB
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
<template>
<transition mode="out-in" v-on="on">
<slot></slot>
</transition>
</template>
<script lang="ts">
import { defineComponent } from 'vue';
import { addClass, removeClass } from '/@/utils/domUtils';
export default defineComponent({
name: 'CollapseTransition',
setup() {
return {
on: {
beforeEnter(el) {
addClass(el, 'collapse-transition');
if (!el.dataset) el.dataset = {};
el.dataset.oldPaddingTop = el.style.paddingTop;
el.dataset.oldPaddingBottom = el.style.paddingBottom;
el.style.height = '0';
el.style.paddingTop = 0;
el.style.paddingBottom = 0;
},
enter(el) {
el.dataset.oldOverflow = el.style.overflow;
if (el.scrollHeight !== 0) {
el.style.height = el.scrollHeight + 'px';
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
} else {
el.style.height = '';
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
}
el.style.overflow = 'hidden';
},
afterEnter(el) {
removeClass(el, 'collapse-transition');
el.style.height = '';
el.style.overflow = el.dataset.oldOverflow;
},
beforeLeave(el) {
if (!el.dataset) el.dataset = {};
el.dataset.oldPaddingTop = el.style.paddingTop;
el.dataset.oldPaddingBottom = el.style.paddingBottom;
el.dataset.oldOverflow = el.style.overflow;
el.style.height = el.scrollHeight + 'px';
el.style.overflow = 'hidden';
},
leave(el) {
if (el.scrollHeight !== 0) {
addClass(el, 'collapse-transition');
el.style.height = 0;
el.style.paddingTop = 0;
el.style.paddingBottom = 0;
}
},
afterLeave(el) {
removeClass(el, 'collapse-transition');
el.style.height = '';
el.style.overflow = el.dataset.oldOverflow;
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
},
},
};
},
});
</script>