109 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Vue
		
	
	
	
		
		
			
		
	
	
			109 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Vue
		
	
	
	
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								<template>
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									<view class="u-grid" :class="{'u-border-top u-border-left': border}" :style="[gridStyle]"><slot /></view>
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								</template>
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								<script>
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								/**
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								 * grid 宫格布局
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								 * @description 宫格组件一般用于同时展示多个同类项目的场景,可以给宫格的项目设置徽标组件(badge),或者图标等,也可以扩展为左右滑动的轮播形式。
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								 * @tutorial https://www.uviewui.com/components/grid.html
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								 * @property {String Number} col 宫格的列数(默认3)
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								 * @property {Boolean} border 是否显示宫格的边框(默认true)
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								 * @property {Boolean} hover-class 点击宫格的时候,是否显示按下的灰色背景(默认false)
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								 * @event {Function} click 点击宫格触发
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								 * @example <u-grid :col="3" @click="click"></u-grid>
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								 */
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								export default {
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									name: 'u-grid',
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									props: {
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										// 分成几列
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										col: {
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											type: [Number, String],
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											default: 3
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										},
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										// 是否显示边框
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										border: {
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											type: Boolean,
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											default: true
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										},
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										// 宫格对齐方式,表现为数量少的时候,靠左,居中,还是靠右
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										align: {
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											type: String,
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											default: 'left'
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										},
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										// 宫格按压时的样式类,"none"为无效果
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										hoverClass: {
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											type: String,
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											default: 'u-hover-class'
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										}
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									},
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									data() {
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										return {
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											index: 0,
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										}
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									},
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									watch: {
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										// 当父组件需要子组件需要共享的参数发生了变化,手动通知子组件
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										parentData() {
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											if(this.children.length) {
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												this.children.map(child => {
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													// 判断子组件(u-radio)如果有updateParentData方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
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													typeof(child.updateParentData) == 'function' && child.updateParentData();
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												})
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											}
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										},
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									},
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									created() {
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										// 如果将children定义在data中,在微信小程序会造成循环引用而报错
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										this.children = [];
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									},
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									computed: {
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										// 计算父组件的值是否发生变化
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										parentData() {
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											return [this.hoverClass, this.col, this.size, this.border];
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										},
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										// 宫格对齐方式
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										gridStyle() {
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											let style = {};
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											switch(this.align) {
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												case 'left':
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													style.justifyContent = 'flex-start';
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													break;
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												case 'center':
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													style.justifyContent = 'center';
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													break;
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												case 'right':
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													style.justifyContent = 'flex-end';
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													break;
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												default: style.justifyContent = 'flex-start';
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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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										click(index) {
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											this.$emit('click', index);
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										}
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									}
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								};
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								</script>
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								<style scoped lang="scss">
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								@import "../../libs/css/style.components.scss";
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								.u-grid {
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									width: 100%;
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									/* #ifdef MP */
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									position: relative;
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									box-sizing: border-box;
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									overflow: hidden;
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									/* #endif */
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									/* #ifndef MP */
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									@include vue-flex;
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									flex-wrap: wrap;
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									align-items: center;
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									/* #endif */
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								}
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								</style>
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