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Add pointer events #57

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Add pointer events #57

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3 changes: 3 additions & 0 deletions lib/drag_and_drop_builder_parameters.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import 'package:flutter/widgets.dart';
typedef void OnPointerMove(PointerMoveEvent event);
typedef void OnPointerUp(PointerUpEvent event);
typedef void OnPointerDown(PointerDownEvent event);
typedef void OnPointerCancel(PointerCancelEvent event);
typedef void OnItemReordered(
DragAndDropItem reorderedItem,
DragAndDropItem receiverItem,
Expand All @@ -26,6 +27,7 @@ class DragAndDropBuilderParameters {
final OnPointerMove? onPointerMove;
final OnPointerUp? onPointerUp;
final OnPointerDown? onPointerDown;
final OnPointerCancel? onPointerCancel;
final OnItemReordered? onItemReordered;
final OnItemDropOnLastTarget? onItemDropOnLastTarget;
final OnListReordered? onListReordered;
Expand Down Expand Up @@ -64,6 +66,7 @@ class DragAndDropBuilderParameters {
this.onPointerMove,
this.onPointerUp,
this.onPointerDown,
this.onPointerCancel,
this.onItemReordered,
this.onItemDropOnLastTarget,
this.onListReordered,
Expand Down
1 change: 1 addition & 0 deletions lib/drag_and_drop_list_wrapper.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,7 @@ class _DragAndDropListWrapper extends State<DragAndDropListWrapper>
onPointerMove: _onPointerMove,
onPointerDown: widget.parameters.onPointerDown,
onPointerUp: widget.parameters.onPointerUp,
onPointerCancel: widget.parameters.onPointerCancel,
),
];

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17 changes: 17 additions & 0 deletions lib/drag_and_drop_lists.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,16 @@ class DragAndDropLists extends StatefulWidget {
/// https://github.com/flutter/flutter/issues/14842#issuecomment-371344881
final bool removeTopPadding;

/// Respond to the DragAndDropLists' onPointerMove event. This exists to work
/// around a conflict in the Flutter engine where multiple Listeners at
/// different levels in the widget hierarchy cannot work together.
final OnPointerMove? listsOnPointerMove;

/// Respond to the DragAndDropLists' onPointerCancel event. This exists to
/// work around a conflict in the Flutter engine where multiple Listeners at
/// different levels in the widget hierarchy cannot work together.
final OnPointerCancel? listsOnPointerCancel;

DragAndDropLists({
required this.children,
required this.onItemReorder,
Expand Down Expand Up @@ -336,6 +346,8 @@ class DragAndDropLists extends StatefulWidget {
this.itemDragHandle,
this.constrainDraggingAxis = true,
this.removeTopPadding = false,
this.listsOnPointerMove,
this.listsOnPointerCancel,
Key? key,
}) : super(key: key) {
if (listGhost == null &&
Expand Down Expand Up @@ -394,6 +406,7 @@ class DragAndDropListsState extends State<DragAndDropLists> {
onPointerDown: _onPointerDown,
onPointerUp: _onPointerUp,
onPointerMove: _onPointerMove,
onPointerCancel: widget.listsOnPointerCancel,
onItemReordered: _internalOnItemReorder,
onItemDropOnLastTarget: _internalOnItemDropOnLastTarget,
onListReordered: _internalOnListReorder,
Expand Down Expand Up @@ -680,6 +693,10 @@ class DragAndDropListsState extends State<DragAndDropLists> {

_scrollList();
}

if (widget.listsOnPointerMove != null) {
widget.listsOnPointerMove!(event);
}
}

_onPointerDown(PointerDownEvent event) {
Expand Down