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2024-03-15 17:20:54 +08:00
parent b9335b4ff8
commit 633cff358d
1423 changed files with 35817 additions and 19 deletions
--- a/miniprogram_npm/@vant/weapp/mixins/page-scroll.js
+++ b/miniprogram_npm/@vant/weapp/mixins/page-scroll.js
@@ -0,0 +1,47 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.pageScrollMixin = void 0;
+var validator_1 = require("../common/validator");
+var utils_1 = require("../common/utils");
+function onPageScroll(event) {
+    var _a = (0, utils_1.getCurrentPage)().vanPageScroller, vanPageScroller = _a === void 0 ? [] : _a;
+    vanPageScroller.forEach(function (scroller) {
+        if (typeof scroller === 'function') {
+            // @ts-ignore
+            scroller(event);
+        }
+    });
+}
+function pageScrollMixin(scroller) {
+    return Behavior({
+        attached: function () {
+            var page = (0, utils_1.getCurrentPage)();
+            if (!(0, utils_1.isDef)(page)) {
+                return;
+            }
+            var _scroller = scroller.bind(this);
+            var _a = page.vanPageScroller, vanPageScroller = _a === void 0 ? [] : _a;
+            if ((0, validator_1.isFunction)(page.onPageScroll) && page.onPageScroll !== onPageScroll) {
+                vanPageScroller.push(page.onPageScroll.bind(page));
+            }
+            vanPageScroller.push(_scroller);
+            page.vanPageScroller = vanPageScroller;
+            page.onPageScroll = onPageScroll;
+            this._scroller = _scroller;
+        },
+        detached: function () {
+            var _this = this;
+            var page = (0, utils_1.getCurrentPage)();
+            if (!(0, utils_1.isDef)(page) || !(0, utils_1.isDef)(page.vanPageScroller)) {
+                return;
+            }
+            var vanPageScroller = page.vanPageScroller;
+            var index = vanPageScroller.findIndex(function (v) { return v === _this._scroller; });
+            if (index > -1) {
+                page.vanPageScroller.splice(index, 1);
+            }
+            this._scroller = undefined;
+        },
+    });
+}
+exports.pageScrollMixin = pageScrollMixin;