Dismissible.confirmDismiss prop

package/lib/src/controls/create_control.dart

@@ -1,19 +1,18 @@
 import 'dart:math';
 
-import 'package:flutter/material.dart';
-
 import 'package:collection/collection.dart';
+import 'package:flutter/material.dart';
 import 'package:flutter_redux/flutter_redux.dart';
 
 import '../flet_app_services.dart';
+import '../flet_server.dart';
 import '../models/app_state.dart';
 import '../models/control.dart';
 import '../models/control_view_model.dart';
 import '../models/page_media_view_model.dart';
 import '../utils/animations.dart';
 import '../utils/theme.dart';
 import '../utils/transforms.dart';
-
 import 'alert_dialog.dart';
 import 'animated_switcher.dart';
 import 'audio.dart';
@@ -131,8 +130,8 @@ Widget createControl(Control? parent, String id, bool parentDisabled,
       }
 
       // create control widget
-      var widget = createWidget(
-          controlKey, controlView, parent, parentDisabled, nextChild);
+      var widget = createWidget(controlKey, controlView, parent, parentDisabled,
+          nextChild, FletAppServices.of(context).server);
 
       // no theme defined? return widget!
       if (id == "page" || controlView.control.attrString("theme") == null) {
@@ -170,7 +169,7 @@ Widget createControl(Control? parent, String id, bool parentDisabled,
 }
 
 Widget createWidget(Key? key, ControlViewModel controlView, Control? parent,
-    bool parentDisabled, Widget? nextChild) {
+    bool parentDisabled, Widget? nextChild, FletServer server) {
   switch (controlView.control.type) {
     case "page":
       return PageControl(
@@ -611,7 +610,8 @@ Widget createWidget(Key? key, ControlViewModel controlView, Control? parent,
           parent: parent,
           control: controlView.control,
           children: controlView.children,
-          parentDisabled: parentDisabled);
+          parentDisabled: parentDisabled,
+          server: server);
     case "alertdialog":
       return AlertDialogControl(
           parent: parent,

package/lib/src/controls/dismissible.dart

@@ -1,8 +1,11 @@
-import 'package:flet/src/utils/dismissible.dart';
+import 'dart:async';
+import 'dart:convert';
+
 import 'package:flutter/material.dart';
 
-import '../flet_app_services.dart';
+import '../flet_server.dart';
 import '../models/control.dart';
+import '../utils/dismissible.dart';
 import 'create_control.dart';
 import 'error.dart';
 
@@ -11,17 +14,18 @@ class DismissibleControl extends StatelessWidget {
   final Control control;
   final List<Control> children;
   final bool parentDisabled;
+  final FletServer server;
 
   const DismissibleControl(
       {super.key,
       this.parent,
       required this.control,
       required this.children,
-      required this.parentDisabled});
+      required this.parentDisabled,
+      required this.server});
 
   @override
   Widget build(BuildContext context) {
-    var server = FletAppServices.of(context).server;
     debugPrint("Dismissible build: ${control.id}");
 
     bool disabled = control.isDisabled || parentDisabled;
@@ -45,6 +49,17 @@ class DismissibleControl extends StatelessWidget {
             control.attrString("dismissDirection", "")!.toLowerCase(),
         orElse: () => DismissDirection.horizontal);
 
+    server.controlInvokeMethods[control.id] = (methodName, args) async {
+      debugPrint("Dismissible.onMethod(${control.id})");
+      if (methodName == "confirm_dismiss") {
+        control.state["confirm_dismiss"]
+            ?.complete(bool.tryParse(args["dismiss"] ?? ""));
+        server.controlInvokeMethods.remove(control.id);
+      }
+
+      return null;
+    };
+
     return constrainedControl(
         context,
         Dismissible(
@@ -57,19 +72,47 @@ class DismissibleControl extends StatelessWidget {
                 ? createControl(
                     control, secondaryBackgroundCtrls.first.id, disabled)
                 : Container(color: Colors.transparent),
-            onDismissed: (DismissDirection d) {
-              server.sendPageEvent(
-                  eventTarget: control.id, eventName: "dismiss", eventData: d.name);
-            },
-            onResize: () {
-              server.sendPageEvent(
-                  eventTarget: control.id, eventName: "resize", eventData: "");
-            },
-            onUpdate: (DismissUpdateDetails d) {
-              server.sendPageEvent(
-                  eventTarget: control.id, eventName: "update", eventData: "");
-            },
-            // confirmDismiss: // TODO: implement
+            onDismissed: control.attrBool("onDismiss", false)!
+                ? (DismissDirection direction) {
+                    server.sendPageEvent(
+                        eventTarget: control.id,
+                        eventName: "dismiss",
+                        eventData: direction.name);
+                  }
+                : null,
+            onResize: control.attrBool("onResize", false)!
+                ? () {
+                    server.sendPageEvent(
+                        eventTarget: control.id,
+                        eventName: "resize",
+                        eventData: "");
+                  }
+                : null,
+            onUpdate: control.attrBool("onUpdate", false)!
+                ? (DismissUpdateDetails details) {
+                    server.sendPageEvent(
+                        eventTarget: control.id,
+                        eventName: "update",
+                        eventData: json.encode(DismissibleUpdateEvent(
+                                direction: details.direction.name,
+                                previousReached: details.previousReached,
+                                progress: details.progress,
+                                reached: details.reached)
+                            .toJson()));
+                  }
+                : null,
+            confirmDismiss: control.attrBool("onConfirmDismiss", false)!
+                ? (DismissDirection direction) {
+                    debugPrint("Dismissible.confirmDismiss(${control.id})");
+                    var completer = Completer<bool?>();
+                    control.state["confirm_dismiss"] = completer;
+                    server.sendPageEvent(
+                        eventTarget: control.id,
+                        eventName: "confirm_dismiss",
+                        eventData: direction.name);
+                    return completer.future;
+                  }
+                : null,
             movementDuration:
                 Duration(milliseconds: control.attrInt("duration", 200)!),
             resizeDuration:
@@ -81,3 +124,23 @@ class DismissibleControl extends StatelessWidget {
         control);
   }
 }
+
+class DismissibleUpdateEvent {
+  final String direction;
+  final bool previousReached;
+  final double progress;
+  final bool reached;
+
+  DismissibleUpdateEvent(
+      {required this.direction,
+      required this.progress,
+      required this.previousReached,
+      required this.reached});
+
+  Map<String, dynamic> toJson() => <String, dynamic>{
+        'direction': direction,
+        'progress': progress,
+        'reached': reached,
+        'previous_reached': previousReached
+      };
+}

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

@@ -76,7 +76,7 @@
     DataTable,
 )
 from flet_core.date_picker import DatePicker, DatePickerEntryMode, DatePickerMode
-from flet_core.dismissible import Dismissible, DismissibleDismissEvent
+from flet_core.dismissible import Dismissible, DismissibleDismissEvent, DismissibleUpdateEvent
 from flet_core.divider import Divider
 from flet_core.drag_target import DragTarget, DragTargetAcceptEvent
 from flet_core.draggable import Draggable

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

@@ -1,4 +1,5 @@
-from typing import Any, Optional, Dict, Union
+import json
+from typing import Any, Dict, Optional, Union
 
 from flet_core.constrained_control import ConstrainedControl
 from flet_core.control import Control, OptionalNumber
@@ -7,11 +8,11 @@
 from flet_core.ref import Ref
 from flet_core.snack_bar import DismissDirection
 from flet_core.types import (
-    ResponsiveNumber,
-    ScaleValue,
     AnimationValue,
-    RotateValue,
     OffsetValue,
+    ResponsiveNumber,
+    RotateValue,
+    ScaleValue,
 )
 
 
@@ -70,6 +71,7 @@ def __init__(
         cross_axis_end_offset: OptionalNumber = None,
         on_update=None,
         on_dismiss=None,
+        on_confirm_dismiss=None,
         on_resize=None,
     ):
         ConstrainedControl.__init__(
@@ -103,7 +105,16 @@ def __init__(
         )
 
         self.__on_dismiss = EventHandler(lambda e: DismissibleDismissEvent(e.data))
+        self.__on_update = EventHandler(lambda e: DismissibleUpdateEvent(**json.loads(e.data)))
+        self.__on_confirm_dismiss = EventHandler(
+            lambda e: DismissibleDismissEvent(e.data)
+        )
+
         self._add_event_handler("dismiss", self.__on_dismiss.get_handler())
+        self._add_event_handler("update", self.__on_update.get_handler())
+        self._add_event_handler(
+            "confirm_dismiss", self.__on_confirm_dismiss.get_handler()
+        )
 
         self.content = content
         self.background = background
@@ -115,6 +126,7 @@ def __init__(
         self.cross_axis_end_offset = cross_axis_end_offset
         self.on_update = on_update
         self.on_dismiss = on_dismiss
+        self.on_confirm_dismiss = on_confirm_dismiss
         self.on_resize = on_resize
 
     def _get_control_name(self):
@@ -137,6 +149,16 @@ def _before_build_command(self):
         super()._before_build_command()
         self._set_attr_json("dismissThresholds", self.__dismiss_thresholds)
 
+    def confirm_dismiss(self, dismiss: bool):
+        self.page.invoke_method(
+            "confirm_dismiss", {"dismiss": str(dismiss).lower()}, control_id=self.uid
+        )
+
+    async def confirm_dismiss_async(self, dismiss: bool):
+        await self.page.invoke_method_async(
+            "confirm_dismiss", {"dismiss": str(dismiss).lower()}, control_id=self.uid
+        )
+
     # content
     @property
     def content(self) -> Control:
@@ -223,7 +245,17 @@ def on_dismiss(self):
     @on_dismiss.setter
     def on_dismiss(self, handler):
         self.__on_dismiss.subscribe(handler)
-        self._set_attr("dismiss", True if handler is not None else None)
+        self._set_attr("onDismiss", True if handler is not None else None)
+
+    # on_confirm_dismiss
+    @property
+    def on_confirm_dismiss(self):
+        return self._get_event_handler("confirm_dismiss")
+
+    @on_confirm_dismiss.setter
+    def on_confirm_dismiss(self, handler):
+        self.__on_confirm_dismiss.subscribe(handler)
+        self._set_attr("onConfirmDismiss", True if handler is not None else None)
 
     # on_update
     @property
@@ -232,7 +264,8 @@ def on_update(self):
 
     @on_update.setter
     def on_update(self, handler):
-        self._add_event_handler("update", handler)
+        self.__on_update.subscribe(handler)
+        self._set_attr("onUpdate", True if handler is not None else None)
 
     # on_resize
     @property
@@ -242,8 +275,19 @@ def on_resize(self):
     @on_resize.setter
     def on_resize(self, handler):
         self._add_event_handler("resize", handler)
+        self._set_attr("onResize", True if handler is not None else None)
 
 
 class DismissibleDismissEvent(ControlEvent):
-    def __init__(self, d: str) -> None:
-        self.direction: DismissDirection = DismissDirection(d)
+    def __init__(self, direction: str) -> None:
+        self.direction: DismissDirection = DismissDirection(direction)
+
+
+class DismissibleUpdateEvent(ControlEvent):
+    def __init__(
+        self, direction: str, progress: float, reached: bool, previous_reached: bool
+    ) -> None:
+        self.direction: DismissDirection = DismissDirection(direction)
+        self.progress = progress
+        self.reached = reached
+        self.previous_reached = previous_reached