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337 lines
11 KiB
337 lines
11 KiB
<template> |
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<view |
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class="u-radio" |
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@tap.stop="wrapperClickHandler" |
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:style="[radioStyle]" |
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:class="[`u-radio-label--${parentData.iconPlacement}`, parentData.borderBottom && parentData.placement === 'column' && 'u-border-bottom']" |
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> |
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<view |
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class="u-radio__icon-wrap" |
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@tap.stop="iconClickHandler" |
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:class="iconClasses" |
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:style="[iconWrapStyle]" |
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> |
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<slot name="icon"> |
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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="elIconColor" |
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/> |
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</slot> |
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</view> |
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<text |
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class="u-radio__text" |
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@tap.stop="labelClickHandler" |
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:style="{ |
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color: elDisabled ? elInactiveColor : elLabelColor, |
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fontSize: elLabelSize, |
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lineHeight: elLabelSize |
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}" |
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>{{label}}</text> |
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</view> |
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</template> |
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<script> |
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import props from './props.js'; |
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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} name radio的名称 |
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* @property {String} shape 形状，square为方形，circle为圆型 |
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* @property {Boolean} disabled 是否禁用 |
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* @property {String | Boolean} labelDisabled 是否禁止点击提示语选中单选框 |
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* @property {String} activeColor 选中时的颜色，如设置parent的active-color将失效 |
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* @property {String} inactiveColor 未选中的颜色 |
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* @property {String | Number} iconSize 图标大小，单位px |
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* @property {String | Number} labelSize label字体大小，单位px |
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* @property {String | Number} label label提示文字，因为nvue下，直接slot进来的文字，由于特殊的结构，无法修改样式 |
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* @property {String | Number} size 整体的大小 |
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* @property {String} iconColor 图标颜色 |
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* @property {String} labelColor label的颜色 |
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* @property {Object} customStyle 组件的样式，对象形式 |
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* |
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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 :labelDisabled="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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mixins: [uni.$u.mpMixin, uni.$u.mixin,props], |
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data() { |
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return { |
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checked: false, |
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// 当你看到这段代码的时候， |
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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: 12, |
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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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inactiveColor: null, |
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size: 18, |
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value: null, |
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iconColor: null, |
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placement: 'row', |
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borderBottom: false, |
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iconPlacement: 'left' |
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} |
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} |
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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 : |
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false; |
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}, |
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// 组件尺寸，对应size的值，默认值为21px |
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elSize() { |
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return this.size ? this.size : (this.parentData.size ? this.parentData.size : 21); |
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}, |
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// 组件的勾选图标的尺寸，默认12px |
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elIconSize() { |
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return this.iconSize ? this.iconSize : (this.parentData.iconSize ? this.parentData.iconSize : 12); |
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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 : '#2979ff'); |
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}, |
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// 组件选未中激活时的颜色 |
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elInactiveColor() { |
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return this.inactiveColor ? this.inactiveColor : (this.parentData.inactiveColor ? this.parentData.inactiveColor : |
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'#c8c9cc'); |
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}, |
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// label的颜色 |
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elLabelColor() { |
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return this.labelColor ? this.labelColor : (this.parentData.labelColor ? this.parentData.labelColor : '#606266') |
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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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// label大小 |
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elLabelSize() { |
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return uni.$u.addUnit(this.labelSize ? this.labelSize : (this.parentData.labelSize ? this.parentData.labelSize : |
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'15')) |
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}, |
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elIconColor() { |
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const iconColor = this.iconColor ? this.iconColor : (this.parentData.iconColor ? this.parentData.iconColor : |
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'#ffffff'); |
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// 图标的颜色 |
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if (this.elDisabled) { |
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// disabled状态下，已勾选的radio图标改为elInactiveColor |
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return this.checked ? this.elInactiveColor : 'transparent' |
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} else { |
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return this.checked ? iconColor : 'transparent' |
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} |
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}, |
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iconClasses() { |
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let classes = [] |
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// 组件的形状 |
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classes.push('u-radio__icon-wrap--' + this.elShape) |
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if (this.elDisabled) { |
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classes.push('u-radio__icon-wrap--disabled') |
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} |
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if (this.checked && this.elDisabled) { |
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classes.push('u-radio__icon-wrap--disabled--checked') |
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} |
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// 支付宝，头条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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// #ifdef MP-ALIPAY || MP-TOUTIAO |
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classes = classes.join(' ') |
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// #endif |
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return classes |
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}, |
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iconWrapStyle() { |
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// radio的整体样式 |
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const style = {} |
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style.backgroundColor = this.checked && !this.elDisabled ? this.elActiveColor : '#ffffff' |
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style.borderColor = this.checked && !this.elDisabled ? this.elActiveColor : this.elInactiveColor |
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style.width = uni.$u.addUnit(this.elSize) |
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style.height = uni.$u.addUnit(this.elSize) |
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// 如果是图标在右边的话，移除它的右边距 |
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if (this.parentData.iconPlacement === 'right') { |
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style.marginRight = 0 |
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} |
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return style |
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}, |
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radioStyle() { |
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const style = {} |
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if(this.parentData.borderBottom && this.parentData.placement === 'row') { |
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uni.$u.error('检测到您将borderBottom设置为true，需要同时将u-radio-group的placement设置为column才有效') |
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} |
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// 当父组件设置了显示下边框并且排列形式为纵向时，给内容和边框之间加上一定间隔 |
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if(this.parentData.borderBottom && this.parentData.placement === 'column') { |
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// ios像素密度高，需要多一点的距离 |
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style.paddingBottom = uni.$u.os() === 'ios' ? '12px' : '8px' |
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} |
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return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle)) |
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} |
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}, |
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mounted() { |
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this.init() |
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}, |
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methods: { |
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init() { |
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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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if (!this.parent) { |
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uni.$u.error('u-radio必须搭配u-radio-group组件使用') |
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} |
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// 设置初始化时，是否默认选中的状态 |
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this.checked = this.name === this.parentData.value |
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}, |
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updateParentData() { |
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this.getParentData('u-radio-group') |
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}, |
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// 点击图标 |
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iconClickHandler(e) { |
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this.preventEvent(e) |
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// 如果整体被禁用，不允许被点击 |
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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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// 横向两端排列时，点击组件即可触发选中事件 |
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wrapperClickHandler(e) { |
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this.parentData.iconPlacement === 'right' && this.iconClickHandler(e) |
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}, |
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// 点击label |
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labelClickHandler(e) { |
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this.preventEvent(e) |
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// 如果按钮整体被禁用或者label被禁用，则不允许点击文字修改状态 |
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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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emitEvent() { |
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// u-radio的checked不为true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.checked) { |
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this.$emit('change', this.name) |
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// 尝试调用u-form的验证方法，进行一定延迟，否则微信小程序更新可能会不及时 |
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this.$nextTick(() => { |
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uni.$u.formValidate(this, 'change') |
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}) |
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} |
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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checked值为true，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checked都设置为false(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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// 将本组件标记为选中状态 |
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this.checked = true |
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typeof this.parent.unCheckedOther === 'function' && this.parent.unCheckedOther(this) |
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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/components.scss"; |
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$u-radio-wrap-margin-right:6px !default; |
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$u-radio-wrap-font-size:20px !default; |
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$u-radio-wrap-border-width:1px !default; |
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$u-radio-wrap-border-color: #c8c9cc !default; |
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$u-radio-line-height:0 !default; |
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$u-radio-circle-border-radius:100% !default; |
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$u-radio-square-border-radius:3px !default; |
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$u-radio-checked-color:#fff !default; |
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$u-radio-checked-background-color:red !default; |
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$u-radio-checked-border-color: #2979ff !default; |
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$u-radio-disabled-background-color:#ebedf0 !default; |
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$u-radio-disabled--checked-color:#c8c9cc !default; |
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$u-radio-label-margin-left: 5px !default; |
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$u-radio-label-margin-right:12px !default; |
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$u-radio-label-color:$u-content-color !default; |
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$u-radio-label-font-size:15px !default; |
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$u-radio-label-disabled-color:#c8c9cc !default; |
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.u-radio { |
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/* #ifndef APP-NVUE */ |
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@include flex(row); |
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/* #endif */ |
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overflow: hidden; |
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flex-direction: row; |
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align-items: center; |
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&-label--left { |
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flex-direction: row |
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} |
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&-label--right { |
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flex-direction: row-reverse; |
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justify-content: space-between |
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} |
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&__icon-wrap { |
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/* #ifndef APP-NVUE */ |
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box-sizing: border-box; |
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// nvue下，border-color过渡有问题 |
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transition-property: border-color, background-color, color; |
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transition-duration: 0.2s; |
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/* #endif */ |
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color: $u-content-color; |
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@include flex; |
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align-items: center; |
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justify-content: center; |
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color: transparent; |
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text-align: center; |
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margin-right: $u-radio-wrap-margin-right; |
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font-size: $u-radio-wrap-font-size; |
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border-width: $u-radio-wrap-border-width; |
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border-color: $u-radio-wrap-border-color; |
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border-style: solid; |
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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: $u-radio-line-height; |
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} |
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/* #endif */ |
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&--circle { |
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border-radius: $u-radio-circle-border-radius; |
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} |
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&--square { |
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border-radius: $u-radio-square-border-radius; |
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} |
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&--checked { |
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color: $u-radio-checked-color; |
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background-color: $u-radio-checked-background-color; |
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border-color: $u-radio-checked-border-color; |
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} |
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&--disabled { |
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background-color: $u-radio-disabled-background-color !important; |
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} |
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&--disabled--checked { |
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color: $u-radio-disabled--checked-color !important; |
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} |
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} |
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&__label { |
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/* #ifndef APP-NVUE */ |
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word-wrap: break-word; |
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/* #endif */ |
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margin-left: $u-radio-label-margin-left; |
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margin-right: $u-radio-label-margin-right; |
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color: $u-radio-label-color; |
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font-size: $u-radio-label-font-size; |
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&--disabled { |
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color: $u-radio-label-disabled-color; |
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} |
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} |
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} |
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</style>
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