tree_view_package library

A powerful tree view package for Flutter with animations, drag-and-drop, and customizable indentation guides.

Classes

AbstractLinesGuide
Base class for indent guides that paint lines.
AnimatedTreeView<T extends Object>
A TreeView that animates expansion state changes.
ConnectingLinesGuide
Indent guide that draws connecting lines between nodes.
DefaultIndentGuide
Provides a default IndentGuide to descendant widgets.
FolderButton
An animated button that shows different icons based on folder state.
IndentGuide
Configuration for indenting and painting guides for tree nodes.
ScopingLinesGuide
Indent guide that draws vertical scoping lines.
SliverAnimatedTree<T extends Object>
A sliver tree with animated expand/collapse transitions.
SliverTree<T extends Object>
A sliver that displays a tree structure.
TreeCheckboxScope
An InheritedWidget that provides checkbox builder to descendants.
TreeController<T extends Object>
A controller for managing the state of a tree structure.
TreeDragAndDropDetails<T extends Object>
Details of a drag-and-drop operation.
TreeDraggable<T extends Object>
A widget that makes tree nodes draggable.
TreeDragTarget<T extends Object>
A widget that accepts dragged tree nodes.
TreeDropdown<T extends Object>
A dropdown widget that displays items in a tree structure with connecting lines.
TreeDropdownController<T extends Object>
Controller for managing TreeDropdown state.
TreeEntry<T extends Object>
Stores contextual information about a node in the tree.
TreeIndentation
Widget for indenting tree nodes with optional visual guides.
TreeSearchMatch
Details of a search match for a single node.
TreeSearchResult<T extends Object>
Result of a tree search operation.
TreeView<T extends Object>
A scrollable widget that displays a tree structure.
TreeViewScope<T extends Object>
An InheritedWidget that provides tree controller access to descendants.

Constants

largestPositiveInteger → const int
Maximum positive integer constant.
treeRootLevel → const int
The default level used for root nodes when flattening the tree.

Functions

defaultFolderButtonTransitionBuilder(Widget child, Animation<double> animation) → Widget
Default transition builder for FolderButton.
defaultTreeTransitionBuilder(BuildContext context, Widget child, Animation<double> animation) → Widget
Default transition builder using SizeTransition.

Typedefs

CheckboxBuilder = Widget Function()
Signature for building checkbox widgets.
ChildrenProvider<T> = Iterable<T> Function(T node)
Signature for a function that returns the children of a node.
ParentProvider<T> = T? Function(T node)
Signature for a function that returns the parent of a node.
PathModifier = Path Function(Path path)
Signature for modifying paths before painting.
TreeDraggableBuilder<T extends Object> = Widget Function(BuildContext context, TreeDragAndDropDetails<T>? details)
Builder for tree draggable widgets.
TreeDragTargetNodeAccepted<T extends Object> = void Function(TreeDragAndDropDetails<T> details)
Callback when a node is accepted by a drag target.
TreeNodeBuilder<T extends Object> = Widget Function(BuildContext context, TreeEntry<T> entry)
Signature for building tree node widgets.
TreeTransitionBuilder = Widget Function(BuildContext context, Widget child, Animation<double> animation)
Signature for transition builders.
ValuePredicate<T> = bool Function(T value)
Signature for predicate functions.
Visitor<T> = void Function(T node)
Signature for visiting nodes during traversal.