ReorderableBuilderController class

Handles logic to set all ReorderableEntity that are related to the children.

Every child gets a ReorderableEntity that contains information about the position, the size and so on. This is need for calculations later when the children are moving or changing their position.

Inheritance

Properties

childrenKeyMap → Map<String, ReorderableEntity>
finalinherited
childrenOrderMap → Map<int, ReorderableEntity>
finalinherited
draggedEntity ↔ ReorderableEntity?
Instance of dragged entity when dragging starts.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
isScrollableOutside ↔ bool
Defines if the scrollable part is outside of the widget.
getter/setter pairinherited
lockedIndices ↔ List<int>
Indices of children that cannot move while drag and drop.
getter/setter pairinherited
offsetMap → Map<int, Offset>
finalinherited
releasedReorderableEntity → ReleasedReorderableEntity?
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scrollOffset ↔ Offset
Holding this value for better performance.
getter/setter pairinherited
startDraggingScrollOffset ↔ Offset
Saves the state of scroll Offset when the drag and drop is starting.
getter/setter pairinherited

Methods

getReorderableEntity({required ValueKey key, required int index}) → ReorderableEntity
Creates or updates ReorderableEntity related to key and returns it.
inherited
handleCreatedChild({required Offset? offset, required Size size, required ReorderableEntity reorderableEntity}) → ReorderableEntity
Updates specific values of reorderableEntity and update maps.
inherited
handleDeviceOrientationChanged() → void
Resets all entities in childrenOrderMap and childrenKeyMap.
inherited
handleDragEnd() → List<ReorderUpdateEntity>?
inherited
handleDragStarted({required ReorderableEntity reorderableEntity, required Offset currentScrollOffset, required List<int> lockedIndices, required bool isScrollableOutside}) → void
inherited
handleDragUpdate({required PointerMoveEvent pointerMoveEvent}) → bool
inherited
handleMovingFinished({required ReorderableEntity reorderableEntity}) → ReorderableEntity
Updates offset and order id of reorderableEntity faded in.
inherited
handleOpacityFinished({required ReorderableEntity reorderableEntity}) → ReorderableEntity
Updates offset and order id of reorderableEntity faded in.
inherited
initChildren({required List<Widget> children}) → void
Adds ReorderableEntity for all children to two maps.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reorderList<T>({required List<T> items, required List<ReorderUpdateEntity> reorderUpdateEntities}) → List<T>
Reorders list of items that depends on reorderUpdateEntities.
inherited
replaceMaps({required Map<String, ReorderableEntity> updatedChildrenKeyMap, required Map<int, ReorderableEntity> updatedChildrenOrderMap}) → void
inherited
toString() → String
A string representation of this object.
inherited
updateChildren({required List<Widget> children}) → void
Iterates through children and updates childrenKeyMap and childrenOrderMap.
updateReleasedReorderableEntity({required ReleasedReorderableEntity releasedReorderableEntity}) → void
inherited
updateToActualPositions() → void
Iterates through childrenKeyMap and updates ReorderableEntity.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited