智慧宿舍系统小程序

wechat/miniprogram/node_modules/@vant/weapp/dist/common/relation.js

@@ -0,0 +1,64 @@
+export function useParent(name, onEffect) {
+  const path = `../${name}/index`;
+  return {
+    relations: {
+      [path]: {
+        type: 'ancestor',
+        linked() {
+          onEffect && onEffect.call(this);
+        },
+        linkChanged() {
+          onEffect && onEffect.call(this);
+        },
+        unlinked() {
+          onEffect && onEffect.call(this);
+        },
+      },
+    },
+    mixin: Behavior({
+      created() {
+        Object.defineProperty(this, 'parent', {
+          get: () => this.getRelationNodes(path)[0],
+        });
+        Object.defineProperty(this, 'index', {
+          // @ts-ignore
+          get: () => {
+            var _a, _b;
+            return (_b =
+              (_a = this.parent) === null || _a === void 0
+                ? void 0
+                : _a.children) === null || _b === void 0
+              ? void 0
+              : _b.indexOf(this);
+          },
+        });
+      },
+    }),
+  };
+}
+export function useChildren(name, onEffect) {
+  const path = `../${name}/index`;
+  return {
+    relations: {
+      [path]: {
+        type: 'descendant',
+        linked(target) {
+          onEffect && onEffect.call(this, target);
+        },
+        linkChanged(target) {
+          onEffect && onEffect.call(this, target);
+        },
+        unlinked(target) {
+          onEffect && onEffect.call(this, target);
+        },
+      },
+    },
+    mixin: Behavior({
+      created() {
+        Object.defineProperty(this, 'children', {
+          get: () => this.getRelationNodes(path) || [],
+        });
+      },
+    }),
+  };
+}