<template>
	<gui-popup 
	ref="guipopupforareapicker" 
	:isSwitchPage="true" 
	:zIndex="zIndex" 
	position="bottom">
		<view 
		class="gui-ap-body gui-bg-white gui-dark-bg-level-3" 
		@tap.stop.prevent="stopfun">
			<view 
			class="gui-ap-header gui-flex gui-row gui-space-between">
				<text 
				class="gui-ap-header-btn gui-block" 
				:class="cancelClass" 
				@tap="close">{{cancelText}}</text>
				<text 
				class="gui-ap-header-btn gui-block" 
				:class="confirmClass" 
				style="text-align:right;" 
				@tap="confirm">{{confirmText}}</text>
			</view>
			<picker-view 
			:style="{height:height+'rpx'}" 
			:indicator-style="indicatorStyle" 
			:value="defaultVal" 
			@change="change">
				<picker-view-column 
				v-if="level >= 1">
					<view 
					class="gui-picker-item" 
					:style="indicatorStyle" 
					v-for="(item, index) in province" 
					:key="index">
						<text 
						:style="indicatorStyle" 
						class="gui-block gui-picker-item">{{item.label}}</text>
					</view>
				</picker-view-column>
				<picker-view-column 
				v-if="level >= 2">
					<view 
					class="gui-picker-item"
					:style="indicatorStyle" 
					v-for="(item, index) in city[defaultVal[0]]" 
					:key="index">
						<text 
						:style="indicatorStyle" 
						class="gui-block gui-picker-item">{{item.label}}</text>
					</view>
				</picker-view-column>
				<picker-view-column 
				v-if="level >= 3">
					<view 
					class="gui-picker-item"
					:style="indicatorStyle" 
					v-for="(item, index) in area[defaultVal[0]][defaultVal[1]]" 
					:key="index">
						<text 
						:style="indicatorStyle" 
						class="gui-block gui-picker-item">{{item.label}}</text>
					</view>
				</picker-view-column>
			</picker-view>
		</view>
	</gui-popup>
</template>
<script>
import provinceData from '../data/city-data/province.js';
import cityData     from '../data/city-data/city.js';
import areaData     from '../data/city-data/area.js';
export default{
	name  : "gui-area-picker",
	props : {
		indicatorStyle : { type : String, default : 'height:36px; line-height:36px;'},
		cancelText     : { type : String, default : '取消' },
		cancelClass    : { type : Array,  default : function(){return ['gui-color-gray'];}},
		confirmText    : { type : String, default : '确定' },
		confirmClass   : { type : Array,  default : function(){return ['gui-primary-color'];}},
		value          : { type : Array , default : function(){ return ['', '', ''] }},
		level          : { type : Number, default : 3},
		height         : { type : Number, default : 550 },
		zIndex         : { type : Number, default : 1000 }
	},
	data() {
		return {
			province       : provinceData,
			city           : cityData,
			area           : areaData,
			defaultVal     : [0,0,0],
			realshow       : false
		}
	},
	watch:{
		value      : function(nv, ov){this.setDefault();},
		defaultVal : function(nv, ov){
			if(ov[0] != nv[0]){
				this.defaultVal.splice(1,1,0);
				this.defaultVal.splice(2,1,0);
			}else if(ov[1] != nv[1]){
				this.defaultVal.splice(2,1,0);
			}
		}
	},
	created() {
		this.setDefault();
	},
	methods:{
		setDefault:function(){
			if(this.value[0] == ''){return ;}
			this.$nextTick(() => {
				this.defaultVal.splice(0, 1, this.arrayIndexOf(this.province, this.value[0]));
				if(this.value[1] == ''){return ;}
				this.$nextTick(() => {
					this.defaultVal.splice(1,1, this.arrayIndexOf(this.city[this.defaultVal[0]], this.value[1]));
					if(this.value[2] == ''){return ;}
					this.$nextTick(() => {
						this.defaultVal.splice(2,1, this.arrayIndexOf(this.area[this.defaultVal[0]][this.defaultVal[1]], this.value[2]));
					})
				})
			});
		},
		arrayIndexOf : function(arr, needFind){
			var index = 0;
			for(let i = 0; i < arr.length; i++){if(arr[i].label == needFind){index = i; return i;}}
			return index;
		},
		change : function (e) {
			var res = e.detail.value;
			if(!res[0]){res[0] = 0;}
			if(!res[1]){res[1] = 0;}
			if(!res[2]){res[2] = 0;}
			this.defaultVal    = res;
		},
		confirm:function () {
			var codes = [
				provinceData[this.defaultVal[0]].value,
				cityData[this.defaultVal[0]][this.defaultVal[1]].value,
				areaData[this.defaultVal[0]][this.defaultVal[1]][this.defaultVal[2]].value ? areaData[this.defaultVal[0]][this.defaultVal[1]][this.defaultVal[2]].value : 0
			];
			var names = [
				provinceData[this.defaultVal[0]].label,
				cityData[this.defaultVal[0]][this.defaultVal[1]].label,
				areaData[this.defaultVal[0]][this.defaultVal[1]][this.defaultVal[2]].label ? areaData[this.defaultVal[0]][this.defaultVal[1]][this.defaultVal[2]].label : ''
			];
			codes = codes.splice(0, this.level);
			names = names.splice(0, this.level);
			var res = {codes : codes, names : names, indexs : this.defaultVal};
			this.$emit('confirm', res);
			this.$refs.guipopupforareapicker.close();
		},
		open : function () {
			this.$refs.guipopupforareapicker.open();
		},
		close : function () {
			this.$refs.guipopupforareapicker.close();
		},
		stopfun : function(e){e.stopPropagation(); return null;}
	},
	emits : ['confirm']
}
</script>
<style scoped>
</style>