aiot-app/uni_modules/as-tree-select/components/as-tree-select/as-select-item.vue

<template>
    <view
        class="as-list-item"
		:class="{
			'focus': focusValue == data[valueKey],
			'disabled': disabled
		}">
        <view class="as-list-content" @tap="onClick">
            <view class="triangle-placeholder" v-if="hasChildren" >
                <view class="triangle-container" @tap.stop="toggle">
                    <view class="triangle" :style="{'transform': open ? 'rotate(90deg)' : 'none'}"></view>
                </view>
            </view>
            <text style="margin-left: 5px;">{{data[labelKey]}}</text>
        </view>
        <view class="as-list-border"></view>
        <view v-if="hasChildren && open" class="as-list">
            <as-select-item
                v-for="item in data.children"
                :key="item[valueKey]"
                :data="item"
                :labelKey="labelKey"
                :valueKey="valueKey"
                :checkStrictly="checkStrictly"
				:disabled="item.disabled"
                @onSelect="onSelect">
            </as-select-item>
        </view>
    </view>
</template>

<script>
    import AsSelectItem from './as-select-item.vue';
    export default{
        name: 'AsSelectItem',
        props: {
            data: {
                type: Object,
                default: function() {
                    return {}
                }
            },
            valueKey: {
                type: String,
                default: 'value'
            },
            labelKey: {
                type: String,
                default: 'label'
            },
            // 是否可以选择任意一级
            checkStrictly: {
                type: Boolean,
                default: false
            },
			disabled: {
				type: Boolean,
				default: false
			}
        },
        components: {
            AsSelectItem
        },
        data() {
            return {
                open: false,
				focusValue: null
            }
        },
        computed: {
            hasChildren: function(){
                return this.data.children && this.data.children.length
            }
        },
        methods: {
            onClick(){				
				if(!this.disabled){
					this.focusValue = this.data[this.valueKey];
					setTimeout(()=> {
						this.focusValue = null;
						if(this.checkStrictly || !this.hasChildren){
						    this.onSelect(this.data[this.valueKey]);
						}else{
						    this.toggle();
						}
					}, 100)
				}
            },
            toggle(){
                this.open = !this.open;
            },
            onSelect(val){
                this.$emit('onSelect', val);
            }
        }
    }
</script>

<style lang="scss" scoped>
    $border-color: #e5e5e5;

	
	.as-list-item{
        color: #666;
		font-size: 26rpx;
		
		.triangle-container{
			// padding: 5px 8px;
			width: 52rpx;
			height: 52rpx;
			display: flex;
			justify-content: center;
			align-items: center;;
		}
		.triangle {
			border-left: 16rpx solid #c0c4cc;
			border-top: 12rpx solid transparent;
			border-bottom: 12rpx solid transparent;
		}
	    .as-list-border{
	        position: relative;
	        margin-left: 15px;
	        
	        &:after {
	            position: absolute;
	            top: 0;
	            right: 0;
	            left: 0;
	            height: 1px;
	            content: "";
	            -webkit-transform: scaleY(.5);
	            transform: scaleY(.5);
	            background-color: $border-color;
	        }
	    }
	    
	    .as-list-content{
	        padding: 10px 15px;
	        line-height: 30px;
	        display: flex;
	        align-items: center;
	    }
		
	    .as-list{
	        padding-left: 20px;
			
	        .as-list-content{
	            position: relative;
				
	            &::before{
	                content: '';
	                border-left: 1px dashed $border-color;
	                height: 26px;
	                width: 1px;
	                position: absolute;
	                left: 8px;
	                top: 50%;
	                margin-top: -13px;
	            }
	            &::after{
	                content: '';
	                border-bottom: 1px dashed $border-color;
	                height: 1px;
	                width: 8px;
	                position: absolute;
	                top: 50%;
	                left: 9px;
	                margin-top: -1px;
	            }
	        }
	    }
	    
	    &.focus>.as-list-content{
	        background: #f1f1f1;
	    }
	    &.disabled>.as-list-content{
	        color: #c7c7c7; 
	    }
	}
</style>