From 6379d7a81d8fb8417977d40031cf587d50f69812 Mon Sep 17 00:00:00 2001
From: Tevin <tingquanren@163.com>
Date: Mon, 31 Jul 2023 17:15:08 +0800
Subject: [PATCH] 地址联动组件再优化,所有方法都改用异步回调

---
 forms/chinaArea/ChinaLocations.js |  211 +++++++++++++++++++++++++++-------------------------
 1 files changed, 108 insertions(+), 103 deletions(-)

diff --git a/forms/chinaArea/ChinaLocations.js b/forms/chinaArea/ChinaLocations.js
index b2e6c4e..ff1efb2 100644
--- a/forms/chinaArea/ChinaLocations.js
+++ b/forms/chinaArea/ChinaLocations.js
@@ -11,7 +11,7 @@
 let locationTreeLv3 = [];
 let locationTreeLv4 = [];
 let locationRes = {};
-let readyCallback = () => { };
+let readyCallbacks = [];
 
 Taro.request({
     url: $hostBoot.getHost() + project.host.assetsPath + '/datas/ChinaLocations.lv4.min.json',
@@ -26,7 +26,7 @@
     method: 'GET',
     success: response => {
         locationRes = response.data;
-        readyCallback();
+        readyCallbacks.forEach(callback => callback());
     }
 });
 
@@ -34,7 +34,7 @@
 
     onReady(callback) {
         if (Tools.isEmptyObject(locationRes)) {
-            readyCallback = callback;
+            readyCallbacks.push(callback);
         } else {
             callback();
         }
@@ -100,138 +100,143 @@
         return treeDatas;
     }
 
-    getLocationTree(level) {
-        if (level === 3) {
-            if (locationTreeLv3.length === 0) {
-                locationTreeLv3 = this._createLocationTree(3);
+    getLocationTree(level, callback) {
+        this.onReady(() => {
+            if (level === 3) {
+                if (locationTreeLv3.length === 0) {
+                    locationTreeLv3 = this._createLocationTree(3);
+                }
+                callback(locationTreeLv3);
+            } else if (level === 4) {
+                if (locationTreeLv4.length === 0) {
+                    locationTreeLv4 = this._createLocationTree(4);
+                }
+                callback(locationTreeLv4);
             }
-            return locationTreeLv3;
-        } else if (level === 4) {
-            if (locationTreeLv4.length === 0) {
-                locationTreeLv4 = this._createLocationTree(4);
-            }
-            return locationTreeLv4;
-        }
+        });
     }
 
     // 获取省市区拼合文本
     getRegionText(regions, callback) {
-        if (regions.length === 0) {
-            return '';
-        }
-        let address = '';
-        let tempLocationData = locationRes;
-        regions.forEach((code) => {
-            if (!code || !tempLocationData[code]) {
-                address.push('');
-                tempLocationData = [];
-            } else {
-                if (typeof tempLocationData[code].name === 'string') {
-                    address += tempLocationData[code].name;
-                } else {
-                    address += tempLocationData[code];
-                }
-                tempLocationData = tempLocationData[code].children;
-            }
+        this.getRegionNames(regions, address => {
+            callback(address.join(''));
         });
-        return address;
     }
 
     // 省市区名称
     getRegionNames(regions, callback) {
-        if (typeof regions === 'string') {
-            regions = regions.split(',');
-        }
-        if (!regions || regions.length === 0 || !regions[0]) {
-            return [];
-        }
-        let address = [];
-        let tempLocationData = locationRes;
-        regions.forEach((code) => {
-            if (!code || !tempLocationData[code]) {
-                address.push('');
-                tempLocationData = [];
-            } else {
-                if (typeof tempLocationData[code].name === 'string') {
-                    address.push(tempLocationData[code].name);
-                } else {
-                    address.push(tempLocationData[code]);
-                }
-                tempLocationData = tempLocationData[code].children;
+        this.onReady(() => {
+            if (typeof regions === 'string') {
+                regions = regions.split(',');
             }
+            if (!regions || regions.length === 0 || !regions[0]) {
+                callback([]);
+            }
+            let address = [];
+            let tempLocationData = locationRes;
+            regions.forEach((code) => {
+                if (!code || !tempLocationData[code]) {
+                    address.push('');
+                    tempLocationData = [];
+                } else {
+                    if (typeof tempLocationData[code].name === 'string') {
+                        address.push(tempLocationData[code].name);
+                    } else {
+                        address.push(tempLocationData[code]);
+                    }
+                    tempLocationData = tempLocationData[code].children;
+                }
+            });
+            callback(address);
         });
-        return address;
     }
 
     // 省市区文本转code
     getRegionCodes(regions, callback) {
-        if (typeof regions === 'string') {
-            regions = regions.split(',');
-        }
-        if (!regions || regions.length === 0 || !regions[0]) {
-            return '';
-        }
-        const codes = [];
-        // 省
-        for (let provinceCode in locationRes) {
-            if (locationRes.hasOwnProperty(provinceCode)) {
-                if (locationRes[provinceCode].name === regions[0]) {
-                    codes[0] = provinceCode;
-                    // 市
-                    const provinceChildren = locationRes[provinceCode].children;
-                    for (let cityCode in provinceChildren) {
-                        if (provinceChildren.hasOwnProperty(cityCode)) {
-                            if (provinceChildren[cityCode].name === regions[1]) {
-                                codes[1] = cityCode;
-                                // 区
-                                const areaChildren = provinceChildren[cityCode].children || [];
-                                for (let areaCode in areaChildren) {
-                                    if (areaChildren.hasOwnProperty(areaCode)) {
-                                        if (areaChildren[areaCode] === regions[2]) {
-                                            codes[2] = areaCode;
-                                            break;
+        this.onReady(() => {
+            if (typeof regions === 'string') {
+                regions = regions.split(',');
+            }
+            if (!regions || regions.length === 0 || !regions[0]) {
+                callback([]);
+            }
+            const codes = [];
+            // 省
+            for (let provinceCode in locationRes) {
+                if (locationRes.hasOwnProperty(provinceCode)) {
+                    if (locationRes[provinceCode].name === regions[0]) {
+                        codes[0] = provinceCode;
+                        // 市
+                        const provinceContainer = locationRes[provinceCode].children;
+                        for (let cityCode in provinceContainer) {
+                            if (provinceContainer.hasOwnProperty(cityCode)) {
+                                if (provinceContainer[cityCode].name === regions[1]) {
+                                    codes[1] = cityCode;
+                                    // 区
+                                    const distContainer = provinceContainer[cityCode].children;
+                                    for (let distCode in distContainer) {
+                                        if (distContainer.hasOwnProperty(distCode)) {
+                                            if (distContainer[distCode] === regions[2]) {
+                                                codes[2] = distCode;
+                                                break;
+                                            }
+                                            if (distContainer[distCode].name === regions[2]) {
+                                                codes[2] = distCode;
+                                                // 如果存在街道,继续转街道
+                                                if (regions[3]) {
+                                                    const streetContainer = distContainer[distCode].children;
+                                                    Object.keys(streetContainer).forEach(streetCode => {
+                                                        if (streetContainer[streetCode] === regions[3]) {
+                                                            codes[3] = streetCode;
+                                                        }
+                                                    });
+                                                }
+                                                break;
+                                            }
                                         }
                                     }
+                                    break;
                                 }
-                                break;
                             }
                         }
+                        break;
                     }
-                    break;
                 }
             }
-        }
-        return codes;
+            callback(codes);
+        });
     }
 
     // 电话区码
-    getRegionsArea(regions) {
-        if (typeof regions === 'string') {
-            regions = regions.split(',');
-        }
-        if (!regions || regions.length === 0 || !regions[0]) {
-            return '';
-        }
-        let area = '';
-        // 省
-        for (let provinceCode in locationRes) {
-            if (locationRes.hasOwnProperty(provinceCode)) {
-                if (provinceCode === regions[0]) {
-                    // 市
-                    const provinceChildren = locationRes[provinceCode].children;
-                    for (let cityCode in provinceChildren) {
-                        if (provinceChildren.hasOwnProperty(cityCode)) {
-                            if (cityCode === regions[1]) {
-                                area = provinceChildren[cityCode].area;
-                                break;
+    getRegionsArea(regions, callback) {
+        this.onReady(() => {
+            if (typeof regions === 'string') {
+                regions = regions.split(',');
+            }
+            if (!regions || regions.length === 0 || !regions[0]) {
+                callback('');
+            }
+            let area = '';
+            // 省
+            for (let provinceCode in locationRes) {
+                if (locationRes.hasOwnProperty(provinceCode)) {
+                    if (provinceCode === regions[0]) {
+                        // 市
+                        const provinceChildren = locationRes[provinceCode].children;
+                        for (let cityCode in provinceChildren) {
+                            if (provinceChildren.hasOwnProperty(cityCode)) {
+                                if (cityCode === regions[1]) {
+                                    area = provinceChildren[cityCode].area;
+                                    break;
+                                }
                             }
                         }
+                        break;
                     }
-                    break;
                 }
             }
-        }
-        return area;
+            callback(area);
+        });
     }
 };
 

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