66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
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import { VantComponent } from '../common/component';
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VantComponent({
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relation: {
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name: 'tabbar-item',
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type: 'descendant',
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linked(target) {
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this.children.push(target);
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target.parent = this;
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target.updateFromParent();
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},
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unlinked(target) {
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this.children = this.children.filter((item) => item !== target);
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this.updateChildren();
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}
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},
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props: {
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active: {
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type: null,
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observer: 'updateChildren'
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},
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activeColor: {
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type: String,
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observer: 'updateChildren'
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},
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inactiveColor: {
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type: String,
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observer: 'updateChildren'
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},
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fixed: {
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type: Boolean,
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value: true
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},
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border: {
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type: Boolean,
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value: true
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},
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zIndex: {
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type: Number,
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value: 1
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},
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safeAreaInsetBottom: {
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type: Boolean,
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value: true
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}
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},
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beforeCreate() {
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this.children = [];
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},
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methods: {
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updateChildren() {
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const { children } = this;
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if (!Array.isArray(children) || !children.length) {
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return Promise.resolve();
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}
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return Promise.all(children.map((child) => child.updateFromParent()));
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},
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onChange(child) {
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const index = this.children.indexOf(child);
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const active = child.data.name || index;
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if (active !== this.data.active) {
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this.$emit('change', active);
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}
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}
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}
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});
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