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271 lines
7.8 KiB
271 lines
7.8 KiB
<template> |
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<view class="u-radio" :style="[radioStyle]"> |
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<view class="u-radio__icon-wrap" @tap="toggle" :class="[iconClass]" :style="[iconStyle]"> |
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<u-icon |
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class="u-radio__icon-wrap__icon" |
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name="checkbox-mark" |
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:size="elIconSize" |
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:color="iconColor"/> |
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</view> |
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<view class="u-radio__label" @tap="onClickLabel" :style="{ |
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fontSize: $u.addUnit(labelSize) |
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}"> |
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<slot /> |
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</view> |
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</view> |
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</template> |
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<script> |
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/** |
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* radio 单选框 |
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* @description 单选框用于有一个选择,用户只能选择其中一个的场景。搭配u-radio-group使用 |
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* @tutorial https://www.uviewui.com/components/radio.html |
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* @property {String Number} icon-size 图标大小,单位rpx(默认24) |
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* @property {String Number} label-size label字体大小,单位rpx(默认28) |
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* @property {String Number} name radio组件的标示符 |
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* @property {String} shape 形状,见上方说明(默认circle) |
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* @property {Boolean} disabled 是否禁用(默认false) |
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* @property {Boolean} label-disabled 点击文本是否可以操作radio(默认true) |
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* @property {String} active-color 选中时的颜色,如设置parent的active-color将失效 |
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* @event {Function} change 某个radio状态发生变化时触发(选中状态) |
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* @example <u-radio :label-disabled="false">门掩黄昏,无计留春住</u-radio> |
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*/ |
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export default { |
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name: "u-radio", |
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props: { |
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// radio的名称 |
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name: { |
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type: [String, Number], |
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default: '' |
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}, |
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// 形状,square为方形,circle为原型 |
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shape: { |
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type: String, |
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default: '' |
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}, |
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// 是否禁用 |
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disabled: { |
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type: [String, Boolean], |
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default: '' |
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}, |
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// 是否禁止点击提示语选中复选框 |
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labelDisabled: { |
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type: [String, Boolean], |
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default: '' |
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}, |
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// 选中状态下的颜色,如设置此值,将会覆盖parent的activeColor值 |
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activeColor: { |
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type: String, |
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default: '' |
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}, |
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// 图标的大小,单位rpx |
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iconSize: { |
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type: [String, Number], |
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default: '' |
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}, |
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// label的字体大小,rpx单位 |
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labelSize: { |
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type: [String, Number], |
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default: '' |
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}, |
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}, |
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data() { |
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return { |
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// 父组件的默认值,因为头条小程序不支持在computed中使用this.parent.shape的形式 |
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// 故只能使用如此方法 |
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parentData: { |
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iconSize: null, |
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labelDisabled: null, |
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disabled: null, |
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shape: null, |
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activeColor: null, |
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size: null, |
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width: null, |
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height: null, |
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value: null, |
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wrap: null |
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} |
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}; |
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}, |
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created() { |
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this.parent = false; |
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// 支付宝小程序不支持provide/inject,所以使用这个方法获取整个父组件,在created定义,避免循环引用 |
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this.updateParentData(); |
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this.parent.children.push(this); |
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}, |
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computed: { |
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// 是否禁用,如果父组件u-raios-group禁用的话,将会忽略子组件的配置 |
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elDisabled() { |
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return this.disabled !== '' ? this.disabled : this.parentData.disabled !== null ? this.parentData.disabled : false; |
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}, |
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// 是否禁用label点击 |
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elLabelDisabled() { |
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return this.labelDisabled !== '' ? this.labelDisabled : this.parentData.labelDisabled !== null ? this.parentData.labelDisabled : false; |
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}, |
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// 组件尺寸,对应size的值,默认值为34rpx |
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elSize() { |
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return this.size ? this.size : (this.parentData.size ? this.parentData.size : 34); |
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}, |
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// 组件的勾选图标的尺寸,默认20 |
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elIconSize() { |
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return this.iconSize ? this.iconSize : (this.parentData.iconSize ? this.parentData.iconSize : 20); |
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}, |
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// 组件选中激活时的颜色 |
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elActiveColor() { |
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return this.activeColor ? this.activeColor : (this.parentData.activeColor ? this.parentData.activeColor : 'primary'); |
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}, |
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// 组件的形状 |
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elShape() { |
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return this.shape ? this.shape : (this.parentData.shape ? this.parentData.shape : 'circle'); |
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}, |
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// 设置radio的状态,要求radio的name等于parent的value时才为选中状态 |
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iconStyle() { |
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let style = {}; |
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if (this.elActiveColor && this.parentData.value == this.name && !this.elDisabled) { |
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style.borderColor = this.elActiveColor; |
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style.backgroundColor = this.elActiveColor; |
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} |
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style.width = this.$u.addUnit(this.elSize); |
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style.height = this.$u.addUnit(this.elSize); |
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return style; |
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}, |
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iconColor() { |
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return this.name == this.parentData.value ? '#ffffff' : 'transparent'; |
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}, |
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iconClass() { |
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let classes = []; |
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classes.push('u-radio__icon-wrap--' + this.elShape); |
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if (this.name == this.parentData.value) classes.push('u-radio__icon-wrap--checked'); |
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if (this.elDisabled) classes.push('u-radio__icon-wrap--disabled'); |
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if (this.name == this.parentData.value && this.elDisabled) classes.push( |
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'u-radio__icon-wrap--disabled--checked'); |
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// 支付宝小程序无法动态绑定一个数组类名,否则解析出来的结果会带有",",而导致失效 |
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return classes.join(' '); |
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}, |
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radioStyle() { |
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let style = {}; |
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if (this.parentData.width) { |
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style.width = this.$u.addUnit(this.parentData.width); |
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// #ifdef MP |
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// 各家小程序因为它们特殊的编译结构,使用float布局 |
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style.float = 'left'; |
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// #endif |
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// #ifndef MP |
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// H5和APP使用flex布局 |
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style.flex = `0 0 ${this.$u.addUnit(this.parentData.width)}`; |
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// #endif |
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} |
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if (this.parentData.wrap) { |
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style.width = '100%'; |
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// #ifndef MP |
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// H5和APP使用flex布局,将宽度设置100%,即可自动换行 |
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style.flex = '0 0 100%'; |
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// #endif |
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} |
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return style; |
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} |
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}, |
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methods: { |
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updateParentData() { |
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this.getParentData('u-radio-group'); |
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}, |
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onClickLabel() { |
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if (!this.elLabelDisabled && !this.elDisabled) { |
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this.setRadioCheckedStatus(); |
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} |
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}, |
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toggle() { |
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if (!this.elDisabled) { |
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this.setRadioCheckedStatus(); |
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} |
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}, |
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emitEvent() { |
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// u-radio的name不等于父组件的v-model的值时(意味着未选中),才发出事件,避免多次点击触发事件 |
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if(this.parentData.value != this.name) this.$emit('change', this.name); |
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}, |
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// 改变组件选中状态 |
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// 这里的改变的依据是,更改本组件的parentData.value值为本组件的name值,同时通过父组件遍历所有u-radio实例 |
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// 将本组件外的其他u-radio的parentData.value都设置为空(由computed计算后,都被取消选中状态),因而只剩下一个为选中状态 |
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setRadioCheckedStatus() { |
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this.emitEvent(); |
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if(this.parent) { |
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this.parent.setValue(this.name); |
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this.parentData.value = this.name; |
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} |
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} |
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} |
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}; |
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</script> |
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<style lang="scss" scoped> |
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@import "../../libs/css/style.components.scss"; |
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.u-radio { |
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/* #ifndef APP-NVUE */ |
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display: inline-flex; |
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/* #endif */ |
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align-items: center; |
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overflow: hidden; |
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user-select: none; |
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line-height: 1.8; |
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&__icon-wrap { |
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color: $u-content-color; |
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@include vue-flex; |
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flex: none; |
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align-items: center; |
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justify-content: center; |
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box-sizing: border-box; |
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width: 42rpx; |
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height: 42rpx; |
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color: transparent; |
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text-align: center; |
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transition-property: color, border-color, background-color; |
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font-size: 20px; |
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border: 1px solid #c8c9cc; |
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transition-duration: 0.2s; |
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/* #ifdef MP-TOUTIAO */ |
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// 头条小程序兼容性问题,需要设置行高为0,否则图标偏下 |
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&__icon { |
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line-height: 0; |
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} |
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/* #endif */ |
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&--circle { |
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border-radius: 100%; |
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} |
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&--square { |
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border-radius: 3px; |
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} |
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&--checked { |
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color: #fff; |
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background-color: #2979ff; |
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border-color: #2979ff; |
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} |
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&--disabled { |
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background-color: #ebedf0; |
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border-color: #c8c9cc; |
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} |
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&--disabled--checked { |
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color: #c8c9cc !important; |
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} |
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} |
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&__label { |
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word-wrap: break-word; |
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margin-left: 10rpx; |
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margin-right: 24rpx; |
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color: $u-content-color; |
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font-size: 30rpx; |
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&--disabled { |
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color: #c8c9cc; |
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} |
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} |
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} |
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</style>
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