优化虚拟滚动逻辑

packages/form/src/form-config-item.ts

@@ -12,7 +12,6 @@ import { VxeFormConstructor, VxeFormDefines, VxeFormPrivateMethods, SlotVNodeTyp
 const VxeFormConfigItem = defineComponent({
   name: 'VxeFormConfigItem',
   props: {
-    itemConfig2: Object,
     itemConfig: Object as PropType<VxeFormDefines.ItemInfo>
   },
   setup (props) {
@@ -124,9 +123,7 @@ const VxeFormConfigItem = defineComponent({
             'is--active': isActivetem($xeform, item),
             'is--error': showError
           }
-        ],
-        itemConfig: item,
-        key: item.id
+        ]
       }, [
         h('div', {
           class: 'vxe-form--item-inner'

packages/form/src/form.ts

@@ -591,7 +591,6 @@ export default defineComponent({
         }, customLayout ? (defaultSlot ? defaultSlot({}) : []) : formItems.map((item, index) => {
           return h(VxeFormConfigItem, {
             key: index,
-            itemConfig2: item,
             itemConfig: item
           })
         })),

packages/list/src/list.ts

@@ -254,7 +254,8 @@ export default defineComponent({
           visibleSize: 0
         })
         internalData.fullData = fullData
-        reactData.scrollYLoad = !!sYOpts.enabled && sYOpts.gt > -1 && sYOpts.gt <= fullData.length
+        // 如果gt为0，则总是启用
+        reactData.scrollYLoad = !!sYOpts.enabled && sYOpts.gt > -1 && (sYOpts.gt === 0 || sYOpts.gt <= fullData.length)
         handleData()
         return computeScrollLoad().then(() => {
           refreshScroll()

packages/table/src/table.ts

@@ -2291,7 +2291,8 @@ export default defineComponent({
         })
       }
       const visibleColumn = leftList.concat(centerList).concat(rightList)
-      const scrollXLoad = !!sXOpts.enabled && sXOpts.gt > -1 && sXOpts.gt < tableFullColumn.length
+      // 如果gt为0，则总是启用
+      const scrollXLoad = !!sXOpts.enabled && sXOpts.gt > -1 && (sXOpts.gt === 0 || sXOpts.gt < tableFullColumn.length)
       reactData.hasFixedColumn = leftList.length > 0 || rightList.length > 0
       Object.assign(columnStore, { leftList, centerList, rightList })
       if (scrollXLoad) {
@@ -2370,7 +2371,8 @@ export default defineComponent({
       const sYOpts = computeSYOpts.value
       const treeOpts = computeTreeOpts.value
       const { transform } = treeOpts
-      const scrollYLoad = (transform || !treeConfig) && !!sYOpts.enabled && sYOpts.gt > -1 && sYOpts.gt < fullData.length
+      // 如果gt为0，则总是启用
+      const scrollYLoad = (transform || !treeConfig) && !!sYOpts.enabled && sYOpts.gt > -1 && (sYOpts.gt === 0 || sYOpts.gt < fullData.length)
       reactData.scrollYLoad = scrollYLoad
       return scrollYLoad
     }
@@ -2499,7 +2501,7 @@ export default defineComponent({
 
     tableMethods = {
       dispatchEvent (type, params, evnt) {
-        emit(type, Object.assign({ $table: $xetable, $event: evnt }, params))
+        emit(type, Object.assign({ $table: $xetable, $grid: $xegrid, $event: evnt }, params))
       },
       /**
        * 重置表格的一切数据状态