<template>
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<span
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tabindex="0"
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:class="wrapClasses"
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:style="wrapStyles"
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@click="toggle"
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@keydown.space="toggle"
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>
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<input type="hidden" :name="name" :value="currentValue">
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<span :class="innerClasses">
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<slot name="open" v-if="currentValue === trueValue"></slot>
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<slot name="close" v-if="currentValue === falseValue"></slot>
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</span>
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</span>
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</template>
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<script>
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import { oneOf } from '../../utils/assist';
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import Emitter from '../../mixins/emitter';
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import mixinsForm from '../../mixins/form';
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const prefixCls = 'ivu-switch';
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export default {
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name: 'iSwitch',
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mixins: [ Emitter, mixinsForm ],
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props: {
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value: {
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type: [String, Number, Boolean],
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default: false
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},
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trueValue: {
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type: [String, Number, Boolean],
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default: true
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},
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falseValue: {
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type: [String, Number, Boolean],
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default: false
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},
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disabled: {
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type: Boolean,
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default: false
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},
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size: {
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validator (value) {
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return oneOf(value, ['large', 'small', 'default']);
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},
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default () {
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return !this.$IVIEW || this.$IVIEW.size === '' ? 'default' : this.$IVIEW.size;
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}
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},
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name: {
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type: String
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},
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loading: {
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type: Boolean,
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default: false
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},
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trueColor: {
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type: String
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},
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falseColor: {
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type: String
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},
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beforeChange: Function
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},
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data () {
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return {
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currentValue: this.value
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};
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},
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computed: {
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wrapClasses () {
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return [
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`${prefixCls}`,
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{
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[`${prefixCls}-checked`]: this.currentValue === this.trueValue,
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[`${prefixCls}-disabled`]: this.itemDisabled,
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[`${prefixCls}-${this.size}`]: !!this.size,
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[`${prefixCls}-loading`]: this.loading,
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}
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];
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},
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wrapStyles () {
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let style = {};
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if (this.trueColor && this.currentValue === this.trueValue) {
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style['border-color'] = this.trueColor;
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style['background-color'] = this.trueColor;
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} else if (this.falseColor && this.currentValue === this.falseValue) {
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style['border-color'] = this.falseColor;
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style['background-color'] = this.falseColor;
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}
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return style;
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},
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innerClasses () {
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return `${prefixCls}-inner`;
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}
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},
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methods: {
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handleToggle () {
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const checked = this.currentValue === this.trueValue ? this.falseValue : this.trueValue;
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this.currentValue = checked;
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this.$emit('input', checked);
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this.$emit('on-change', checked);
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this.dispatch('FormItem', 'on-form-change', checked);
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},
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toggle (event) {
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event.preventDefault();
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if (this.itemDisabled || this.loading) {
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return false;
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}
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if (!this.beforeChange) {
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return this.handleToggle();
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}
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const before = this.beforeChange();
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if (before && before.then) {
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before.then(() => {
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this.handleToggle();
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});
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} else {
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this.handleToggle();
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}
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}
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},
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watch: {
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value (val) {
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if (val !== this.trueValue && val !== this.falseValue && val !== null) {
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throw 'Value should be trueValue or falseValue.';
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}
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this.currentValue = val;
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}
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}
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};
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</script>
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