radio-group.vue
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<template>
<div
:class="classes" tabindex="0"
@keydown.left="onLeft"
@keydown.right="onRight"
@keydown.up="onUp"
@keydown.down="onDown"
@keydown.tab="onTab">
<slot></slot>
</div>
</template>
<script>
import { oneOf, findComponentsDownward } from '../../utils/assist';
import Emitter from '../../mixins/emitter';
const prefixCls = 'ivu-radio-group';
export default {
name: 'RadioGroup',
mixins: [ Emitter ],
props: {
value: {
type: [String, Number],
default: ''
},
size: {
validator (value) {
return oneOf(value, ['small', 'large', 'default']);
}
},
type: {
validator (value) {
return oneOf(value, ['button']);
}
},
vertical: {
type: Boolean,
default: false
}
},
data () {
return {
currentValue: this.value,
childrens: [],
preventDefaultTab: true
};
},
computed: {
classes () {
return [
`${prefixCls}`,
{
[`${prefixCls}-${this.size}`]: !!this.size,
[`ivu-radio-${this.size}`]: !!this.size,
[`${prefixCls}-${this.type}`]: !!this.type,
[`${prefixCls}-vertical`]: this.vertical
}
];
}
},
mounted () {
this.updateValue();
},
methods: {
updateValue () {
const value = this.value;
this.childrens = findComponentsDownward(this, 'Radio');
if (this.childrens) {
this.childrens.forEach(child => {
child.currentValue = value === child.label;
child.group = true;
});
}
},
change (data) {
this.currentValue = data.value;
this.updateValue();
this.$emit('input', data.value);
this.$emit('on-change', data.value);
this.dispatch('FormItem', 'on-form-change', data.value);
},
findRadio(value) {
return this.childrens && this.childrens.length ? this.childrens.find((child) => child.value === value) : undefined;
},
findIndexRadio(value) {
return this.childrens && this.childrens.length ? this.childrens.findIndex((child) => child.value === value) : -1;
},
includesRadio(value) {
return this.childrens && this.childrens.length ? this.childrens.includes((child) => child.value === value) : false;
},
nextRadio() {
if (this.includesRadio(this.currentValue)) {
console.log('get next');
} else {
return this.childrens && this.childrens.length ? this.childrens[0] : undefined;
}
},
onLeft() {
console.log('left', this.currentValue);
},
onRight() {
console.log('right', this.currentValue);
},
onUp() {
console.log('up', this.currentValue);
},
onDown() {
console.log('down', this.currentValue);
},
onTab(event) {
if (!this.preventDefaultTab) {
return;
}
event.preventDefault();
this.preventDefaultTab = false;
this.currentValue = this.nextRadio();
if (this.currentValue) {
this.change({
value: this.currentValue.label
});
}
console.log('tab', this);
},
},
watch: {
value () {
this.updateValue();
}
}
};
</script>