From 20f850685595c96616f76a80016d2ea447450f32 Mon Sep 17 00:00:00 2001
From: yan-shuifeng <yanshuifeng@huawei.com>
Date: Mon, 30 Dec 2024 15:24:21 +0800
Subject: [PATCH] enable LazyForEach

Signed-off-by: yan-shuifeng <yanshuifeng@huawei.com>
---
 arkoala-arkts/arkui/src/LazyForEach.ts | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/arkoala-arkts/arkui/src/LazyForEach.ts b/arkoala-arkts/arkui/src/LazyForEach.ts
index 01ffee274..fdd7efa63 100644
--- a/arkoala-arkts/arkui/src/LazyForEach.ts
+++ b/arkoala-arkts/arkui/src/LazyForEach.ts
@@ -49,7 +49,7 @@ export type DataChangeListener = Object
 }
 
 class LazyForEachManager {
-    static isDummy: boolean = true
+    static isDummy: boolean = false
      // Special pointer to mark that more elements needed.
     static specialPointer: pointer = 1
     static OnRangeUpdate(parent: pointer, totalCount: int32, updater: (currentIndex: int32, currentMark: pointer) => void) {
@@ -81,7 +81,7 @@ export function LazyForEach<T>(dataSource: IDataSource<T>,
     itemGenerator: (item: T, index: number) => void,
     keyGenerator?: (item: T, index: number) => string,
 ) {
-    let current = rememberMutableState<int32>(0)
+    let current = rememberMutableState<int32>(-1)
     let mark = rememberMutableState<pointer>(nullptr)
 	let version = rememberMutableState<int32>(0)
 	console.log(`LazyForEach current=${current.value} version=${version.value} mark=${mark.value}`)
@@ -102,18 +102,31 @@ export function LazyForEach<T>(dataSource: IDataSource<T>,
     let markUp = mark.value
     let markDown = mark.value
 
-    const needFillUp = remember(() => () => {
+    // const needFillUp = remember(() => () => {
+    //     let more = LazyForEachManager.NeedMoreElements(parentPtr, markUp, 0)
+    //     if (more == nullptr) return false
+    //     markUp = more
+    //     return true
+    // })
+    // const needFillDown = remember(() => () => {
+    //     let more = LazyForEachManager.NeedMoreElements(parentPtr, markDown, 1)
+    //     if (more == nullptr) return false
+    //     markDown = more
+    //     return true
+    // })
+
+    const needFillUp = () => {
         let more = LazyForEachManager.NeedMoreElements(parentPtr, markUp, 0)
         if (more == nullptr) return false
         markUp = more
         return true
-    })
-    const needFillDown = remember(() => () => {
+    }
+    const needFillDown = () => {
         let more = LazyForEachManager.NeedMoreElements(parentPtr, markDown, 1)
         if (more == nullptr) return false
         markDown = more
         return true
-    })
+    }
 
     let indexUp = current.value
     let indexDown = current.value
-- 
Gitee