rate.vue
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<template>
<div :class="classes" @mouseleave="handleMouseleave">
<div
v-for="item in count"
:class="starCls(item)"
@mousemove="handleMousemove(item, $event)"
@click="handleClick(item)">
<span :class="[prefixCls + '-star-content']" type="half"></span>
</div>
<div :class="[prefixCls + '-text']" v-if="showText" v-show="currentValue > 0">
<slot>{{ currentValue }} <template v-if="currentValue <= 1">{{ t('i.rate.star') }}</template><template v-else>{{ t('i.rate.stars') }}</template></slot>
</div>
</div>
</template>
<script>
import Locale from '../../mixins/locale';
import Emitter from '../../mixins/emitter';
const prefixCls = 'ivu-rate';
export default {
mixins: [ Locale, Emitter ],
props: {
count: {
type: Number,
default: 5
},
value: {
type: Number,
default: 0
},
allowHalf: {
type: Boolean,
default: false
},
disabled: {
type: Boolean,
default: false
},
showText: {
type: Boolean,
default: false
}
},
data () {
return {
prefixCls: prefixCls,
hoverIndex: -1,
isHover: false,
isHalf: false,
currentValue: this.value
};
},
computed: {
classes () {
return [
`${prefixCls}`,
{
[`${prefixCls}-disabled`]: this.disabled
}
];
}
},
watch: {
value (val) {
this.currentValue = val;
},
currentValue (val) {
this.setHalf(val);
}
},
methods: {
starCls (value) {
const hoverIndex = this.hoverIndex;
const currentIndex = this.isHover ? hoverIndex : this.currentValue;
let full = false;
let isLast = false;
if (currentIndex >= value) full = true;
if (this.isHover) {
isLast = currentIndex === value;
} else {
isLast = Math.ceil(this.currentValue) === value;
}
return [
`${prefixCls}-star`,
{
[`${prefixCls}-star-full`]: (!isLast && full) || (isLast && !this.isHalf),
[`${prefixCls}-star-half`]: isLast && this.isHalf,
[`${prefixCls}-star-zero`]: !full
}
];
},
handleMousemove(value, event) {
if (this.disabled) return;
this.isHover = true;
if (this.allowHalf) {
const type = event.target.getAttribute('type') || false;
this.isHalf = type === 'half';
} else {
this.isHalf = false;
}
this.hoverIndex = value;
},
handleMouseleave () {
if (this.disabled) return;
this.isHover = false;
this.setHalf(this.currentValue);
this.hoverIndex = -1;
},
setHalf (val) {
this.isHalf = val.toString().indexOf('.') >= 0;
},
handleClick (value) {
if (this.disabled) return;
// value++;
if (this.isHalf) value -= 0.5;
this.currentValue = value;
this.$emit('input', value);
this.$emit('on-change', value);
// @todo
// this.$dispatch('on-form-change', value);
}
}
};
</script>