feat(controller): allow swiping up and down

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [1.1.0]
+
+- Add option to slide up and down through controller
+
 ## [1.0.2]
 
 - Make all callbacks type-safe

README.md

@@ -110,6 +110,8 @@ The ```Controller``` is used to swipe the card from outside of the widget. You c
 | swipe      | Changes the state of the controller to swipe and swipes the card in your selected direction.
 | swipeLeft      | Changes the state of the controller to swipe left and swipes the card to the left side.
 | swipeRight      | Changes the state of the controller to swipe right and swipes the card to the right side.
+| swipeTop      | Changes the state of the controller to swipe top and swipes the card to the top side.
+| swipeBottom      | Changes the state of the controller to swipe bottom and swipes the card to the | swipeBottom      | Changes the state of the controller to swipe bottom and swipes the card to the right side.
 
 <hr/>
 

example/lib/main.dart

@@ -57,6 +57,14 @@ class _ExamplePageState extends State<Example> {
                     onPressed: controller.swipeRight,
                     child: Icon(Icons.keyboard_arrow_right),
                   ),
+                  FloatingActionButton(
+                    onPressed: controller.swipeTop,
+                    child: Icon(Icons.keyboard_arrow_up),
+                  ),
+                  FloatingActionButton(
+                    onPressed: controller.swipeBottom,
+                    child: Icon(Icons.keyboard_arrow_down),
+                  ),
                 ],
               ),
             )

lib/src/card_swiper.dart

@@ -92,49 +92,26 @@ class _CardSwiperState extends State<CardSwiper>
     super.initState();
 
     if (widget.controller != null) {
-      widget.controller!
       //swipe widget from the outside
-        ..addListener(() {
-          if (widget.controller!.state == CardSwiperState.swipe) {
-            if (widget.cards.isNotEmpty) {
-              switch (widget.direction) {
-                case CardSwiperDirection.right:
-                  _swipeHorizontal(context);
+      widget.controller!.addListener(() {
+        switch (widget.controller!.state) {
+          case CardSwiperState.swipe:
+            _swipe(context, widget.direction);
             break;
-                case CardSwiperDirection.left:
-                  _swipeHorizontal(context);
+          case CardSwiperState.swipeLeft:
+            _swipe(context, CardSwiperDirection.left);
             break;
-                case CardSwiperDirection.top:
-                  _swipeVertical(context);
+          case CardSwiperState.swipeRight:
+            _swipe(context, CardSwiperDirection.right);
             break;
-                case CardSwiperDirection.bottom:
-                  _swipeVertical(context);
+          case CardSwiperState.swipeTop:
+            _swipe(context, CardSwiperDirection.top);
             break;
-                case CardSwiperDirection.none:
+          case CardSwiperState.swipeBottom:
+            _swipe(context, CardSwiperDirection.bottom);
+            break;
+          default:
             break;
-              }
-              _animationController.forward();
-            }
-          }
-        })
-        //swipe widget left from the outside
-        ..addListener(() {
-          if (widget.controller!.state == CardSwiperState.swipeLeft) {
-            if (widget.cards.isNotEmpty) {
-              _left = -1;
-              _swipeHorizontal(context);
-              _animationController.forward();
-            }
-          }
-        })
-        //swipe widget right from the outside
-        ..addListener(() {
-          if (widget.controller!.state == CardSwiperState.swipeRight) {
-            if (widget.cards.isNotEmpty) {
-              _left = widget.threshold + 1;
-              _swipeHorizontal(context);
-              _animationController.forward();
-            }
         }
       });
     }
@@ -340,6 +317,32 @@ class _CardSwiperState extends State<CardSwiper>
     }
   }
 
+  void _swipe(BuildContext context, CardSwiperDirection direction) {
+    if (widget.cards.isEmpty) return;
+
+    switch (direction) {
+      case CardSwiperDirection.left:
+        _left = -1;
+        _swipeHorizontal(context);
+        break;
+      case CardSwiperDirection.right:
+        _left = widget.threshold + 1;
+        _swipeHorizontal(context);
+        break;
+      case CardSwiperDirection.top:
+        _top = -1;
+        _swipeVertical(context);
+        break;
+      case CardSwiperDirection.bottom:
+        _top = widget.threshold + 1;
+        _swipeVertical(context);
+        break;
+      default:
+        break;
+    }
+    _animationController.forward();
+  }
+
   //moves the card away to the top or bottom
   void _swipeVertical(BuildContext context) {
     setState(() {

lib/src/card_swiper_controller.dart

@@ -1,7 +1,7 @@
-//to call the swipe function from outside of the CardSwiper
 import 'package:flutter/widgets.dart';
 import 'package:flutter_card_swiper/src/enums.dart';
 
+//to call the swipe function from outside of the CardSwiper
 class CardSwiperController extends ChangeNotifier {
   CardSwiperState? state;
 
@@ -22,4 +22,16 @@ class CardSwiperController extends ChangeNotifier {
     state = CardSwiperState.swipeRight;
     notifyListeners();
   }
+
+  //swipe the card to the top side by changing the status of the controller
+  void swipeTop() {
+    state = CardSwiperState.swipeTop;
+    notifyListeners();
+  }
+
+  //swipe the card to the bottom side by changing the status of the controller
+  void swipeBottom() {
+    state = CardSwiperState.swipeBottom;
+    notifyListeners();
+  }
 }

lib/src/enums.dart

@@ -1,4 +1,4 @@
-enum CardSwiperState { swipe, swipeLeft, swipeRight }
+enum CardSwiperState { swipe, swipeLeft, swipeRight, swipeTop, swipeBottom }
 
 enum CardSwiperDirection { none, left, right, top, bottom }