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<template>
<div>
<a-cascader v-model="areaCode"
ref="cascader"
:style="{width:width}"
change-on-select
:disabled="disabled"
:options="options"
:fieldNames="fieldNames"
:load-data="loadAreaData"
@change="areaChange"
placeholder="请选择">
</a-cascader>
</div>
</template>
<!--
全国地区级联选择控件，包括回显数据
-->
<script>
export default {
name: "allAreaCascader",
props: ["disabled", "value", "width"],
created() {
this.loadAreaData([{areaCode: 0}]);
},
mounted() {
this.handleAreaCode(this.value);
},
data() {
return {
areaCode: undefined,
options: [],
fieldNames: {
label: 'areaName',
value: 'areaCode',
children: 'children'
},
areaData: {},
optionsObj: {},
number3: 0,
number4: 0,
};
},
watch: {
//子组件中直接使用prop1
value(newValue, oldValue) {
this.handleAreaCode(newValue);
//this.$emit( 'propChange', newValue )
}
},
methods: {
handleAreaCode(areaCode) {
if (this.$api.utils.isBlank(areaCode)) {
this.areaCode = [];
return;
}
let level = 1;
if (areaCode.length == 2) {
this.areaCode = [areaCode];
return;
}
let provinceCode = areaCode.substring(0, 2);
let cityCodeFull = areaCode.substring(0, 4) + "00000000";
let countyCode, townshipCode, villageCode;
let countyCodeFull, townshipCodeFull;
level = 2;
if (areaCode.substring(2, 4) != '00') {
level = 3
countyCode = areaCode.substring(0, 6);
countyCodeFull = areaCode.substring(0, 6) + "000000";
if (areaCode.substring(4, 6) != '00') {
level = 4;
townshipCode = areaCode.substring(0, 9);
townshipCodeFull = areaCode.substring(0, 9) + "000";
if (areaCode.substring(6, 9) != '000') {
level = 5;
villageCode = areaCode.substring(0, 12);
}
}
}
let areaCodeList = [provinceCode, cityCodeFull, countyCodeFull, townshipCodeFull, villageCode];
if (level > 1) {
this.$api.common.fetchAreaByCode(provinceCode).then(({data = []}) => {
this.handleData(data, 2, cityCodeFull);
if (level > 2) {
this.$api.common.fetchAreaByCode(cityCodeFull).then(({data = []}) => {
this.handleData(data, 3, cityCodeFull);
if (level > 3) {
this.$api.common.fetchAreaByCode(countyCodeFull).then(({data = []}) => {
this.handleData(data, 4, countyCodeFull);
if (level > 4) {
this.$api.common.fetchAreaByCode(townshipCodeFull).then(({data = []}) => {
this.handleData(data, 5, townshipCodeFull);
this.areaCode = areaCodeList;
this.isEndHandle(provinceCode)
});
} else {
this.isEndHandle(provinceCode)
this.areaCode = areaCodeList;
}
})
} else {
this.areaCode = areaCodeList;
this.isEndHandle(provinceCode)
}
})
} else {
this.areaCode = areaCodeList;
this.isEndHandle(provinceCode)
}
})
} else {
this.areaCode = areaCodeList;
this.isEndHandle(provinceCode)
}
},
isEndHandle(provinceCode) {
this.options.forEach(x => {
if (x.areaCode == provinceCode) {
x.children = this.optionsObj;
}
})
},
handleData(data, level, areaCode) {
if (this.$api.utils.isBlank(data)) {
return;
}
data.forEach(item => {
item['isLeaf'] = item.areaLevel >= 5;
});
if (level == 2) {
this.optionsObj = data;
}
if (level == 3) {
let number3 = 0;
this.optionsObj.forEach(x => {
if (x.areaCode == areaCode) {
x.children = data;
this.number3 = number3;
}
number3++;
})
}
if (level == 4) {
let number4 = 0;
this.optionsObj[this.number3].children.forEach(x => {
if (x.areaCode == areaCode) {
x.children = data;
this.number4 = number4;
}
number4++;
})
}
if (level == 5) {
this.optionsObj[this.number3].children[this.number4].children.forEach(x => {
if (x.areaCode == areaCode) {
x.children = data;
}
})
}
},
loadAreaData(selectedOptions) {
const targetOption = selectedOptions[selectedOptions.length - 1];
targetOption.loading = true;
this.$api.common.fetchAreaByCode(targetOption.areaCode).then(({data = []}) => {
targetOption.loading = false;
if (this.$api.utils.isBlank(data)) {
return;
}
data.forEach(item => {
item['isLeaf'] = item.areaLevel >= 5;
})
if (targetOption.areaCode == 0) {
this.options = [...data];
} else {
targetOption.children = [...data]
this.options = [...this.options]
}
})
},
setValue(areaCode) {
this.handleAreaCode(areaCode);
},
getValue() {
return this.areaCode;
},
areaChange(areaCode) {
if (areaCode.length == 0) {
this.$emit("input", "");
return;
}
this.$emit("input", areaCode[areaCode.length - 1])
},
focus() {
let input = this.$refs["cascader"];
input.focus();
}
}
}
</script>
<style scoped>
</style>