ListView.reverse and GridView.reverse props (#2335)

* ScrollableControl.reverse

* ListView.reverse

* GridView.reverse

Author: ndonkoHenri

package/lib/src/controls/grid_view.dart

@@ -56,6 +56,7 @@ class _GridViewControlState extends State<GridViewControl> {
     final runSpacing = widget.control.attrDouble("runSpacing", 10)!;
     final padding = parseEdgeInsets(widget.control, "padding");
     final childAspectRatio = widget.control.attrDouble("childAspectRatio", 1)!;
+    final reverse = widget.control.attrBool("reverse", false)!;
 
     List<Control> visibleControls =
         widget.children.where((c) => c.isVisible).toList();
@@ -84,6 +85,7 @@ class _GridViewControlState extends State<GridViewControl> {
         Widget child = GridView.builder(
           scrollDirection: horizontal ? Axis.horizontal : Axis.vertical,
           controller: _controller,
+          reverse: reverse,
           shrinkWrap: shrinkWrap,
           padding: padding,
           gridDelegate: gridDelegate,

package/lib/src/controls/list_view.dart

@@ -56,6 +56,7 @@ class _ListViewControlState extends State<ListViewControl> {
     final firstItemPrototype =
         widget.control.attrBool("firstItemPrototype", false)!;
     final padding = parseEdgeInsets(widget.control, "padding");
+    final reverse = widget.control.attrBool("reverse", false)!;
 
     List<Control> visibleControls =
         widget.children.where((c) => c.isVisible).toList();
@@ -72,6 +73,7 @@ class _ListViewControlState extends State<ListViewControl> {
         Widget child = spacing > 0
             ? ListView.separated(
                 controller: _controller,
+                reverse: reverse,
                 scrollDirection: horizontal ? Axis.horizontal : Axis.vertical,
                 shrinkWrap: shrinkWrap,
                 padding: padding,
@@ -94,6 +96,7 @@ class _ListViewControlState extends State<ListViewControl> {
               )
             : ListView.builder(
                 controller: _controller,
+                reverse: reverse,
                 scrollDirection: horizontal ? Axis.horizontal : Axis.vertical,
                 shrinkWrap: shrinkWrap,
                 padding: padding,

sdk/python/packages/flet-core/src/flet_core/grid_view.py

@@ -93,6 +93,7 @@ def __init__(
         # ScrollableControl specific
         #
         auto_scroll: Optional[bool] = None,
+        reverse: Optional[bool] = None,
         on_scroll_interval: OptionalNumber = None,
         on_scroll: Any = None,
         #
@@ -138,6 +139,7 @@ def __init__(
         ScrollableControl.__init__(
             self,
             auto_scroll=auto_scroll,
+            reverse=reverse,
             on_scroll_interval=on_scroll_interval,
             on_scroll=on_scroll,
         )

sdk/python/packages/flet-core/src/flet_core/list_view.py

@@ -85,6 +85,7 @@ def __init__(
         # ScrollableControl specific
         #
         auto_scroll: Optional[bool] = None,
+        reverse: Optional[bool] = None,
         on_scroll_interval: OptionalNumber = None,
         on_scroll: Any = None,
         #
@@ -129,6 +130,7 @@ def __init__(
         ScrollableControl.__init__(
             self,
             auto_scroll=auto_scroll,
+            reverse=reverse,
             on_scroll_interval=on_scroll_interval,
             on_scroll=on_scroll,
         )

sdk/python/packages/flet-core/src/flet_core/scrollable_control.py

@@ -14,6 +14,7 @@ def __init__(
         self,
         scroll: Optional[ScrollMode] = None,
         auto_scroll: Optional[bool] = None,
+        reverse: Optional[bool] = None,
         on_scroll_interval: OptionalNumber = None,
         on_scroll: Any = None,
     ):
@@ -26,6 +27,7 @@ def convert_on_scroll_event_data(e):
 
         self.scroll = scroll
         self.auto_scroll = auto_scroll
+        self.reverse = reverse
         self.on_scroll_interval = on_scroll_interval
         self.on_scroll = on_scroll
 
@@ -95,13 +97,22 @@ def __set_scroll(self, value: Optional[ScrollModeString]):
 
     # auto_scroll
     @property
-    def auto_scroll(self) -> Optional[bool]:
-        return self._get_attr("autoScroll")
+    def auto_scroll(self) -> Optional[str]:
+        return self._get_attr("autoScroll", data_type="bool", def_value=False)
 
     @auto_scroll.setter
     def auto_scroll(self, value: Optional[bool]):
         self._set_attr("autoScroll", value)
 
+    # reverse
+    @property
+    def reverse(self) -> Optional[bool]:
+        return self._get_attr("reverse", data_type="bool", def_value=False)
+
+    @reverse.setter
+    def reverse(self, value: Optional[bool]):
+        self._set_attr("reverse", value)
+
     # on_scroll_interval
     @property
     def on_scroll_interval(self) -> OptionalNumber: