index.js
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import { VantComponent } from '../common/component';
VantComponent({
props: {
info: null,
name: null,
icon: String,
dot: Boolean
},
relation: {
name: 'tabbar',
type: 'ancestor'
},
data: {
active: false
},
methods: {
onClick() {
if (this.parent) {
this.parent.onChange(this);
}
this.$emit('click');
},
updateFromParent() {
const { parent } = this;
if (!parent) {
return;
}
const index = parent.children.indexOf(this);
const parentData = parent.data;
const { data } = this;
const active = (data.name || index) === parentData.active;
const patch = {};
if (active !== data.active) {
patch.active = active;
}
if (parentData.activeColor !== data.activeColor) {
patch.activeColor = parentData.activeColor;
}
if (parentData.inactiveColor !== data.inactiveColor) {
patch.inactiveColor = parentData.inactiveColor;
}
return Object.keys(patch).length > 0
? this.set(patch)
: Promise.resolve();
}
}
});