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
| export function ChildrenMixin(parent, options = {}) {
| const indexKey = options.indexKey || 'index';
| return {
| inject: {
| [parent]: {
| default: null,
| },
| },
| mounted() {
| this.parent = this[parent];
| this.bindRelation();
| },
| // #ifdef VUE2
| beforeDestroy() {
| if (this.parent) {
| this.parent.children = this.parent.children.filter(
| (item) => item !== this
| );
| uni.$emit("childrenReady" + this.parent._uid, this);
| }
| },
| // #endif
| // #ifdef VUE3
| beforeUnmount() {
| if (this.parent) {
| this.parent.children = this.parent.children.filter(
| (item) => item !== this
| );
| uni.$emit("childrenReady" + this.parent._uid, this);
| }
| },
| // #endif
| methods: {
| bindRelation() {
| if (!this.parent || this.parent.children.indexOf(this) !== -1) {
| return;
| }
| const children = [...this.parent.children, this];
| this.parent.children = children;
| this.index = this.parent.children.indexOf(this);
| uni.$emit("childrenReady" + this.parent._uid, this);
| },
| },
| };
| }
|
| export function ParentMixin(parent) {
| return {
| provide() {
| return {
| [parent]: this,
| };
| },
| created() {
| this.children = [];
| },
| // #ifdef VUE2
| beforeDestroy() {
| uni.$off("childrenReady" + this._uid)
| },
| // #endif
| // #ifdef VUE3
| beforeUnmount() {
| uni.$off("childrenReady" + this._uid)
| },
| // #endif
| };
| }
|
|
