TreeController class - interactive_tree_view library

Constructors

TreeController.new({required List<TreeNode<Object?>> initialNodes, void onAttached(TreeNode<Object?> node, TreeNode<Object?>? parent)?, void onRemoved(TreeNode<Object?> node, TreeNode<Object?>? parent)?, void onChanged()?, void onMoved(TreeNode<Object?> node, int position, TreeNode<Object?>? oldParent, TreeNode<Object?>? newParent)?}): Wraps a Tree and exposes methods to control or read certain aspects of this tree.

Properties

hashCode → int: The hash code for this object.
no setterinherited
hasListeners → bool: Whether any listeners are currently registered.
no setterinherited
rootCount → int: The number of rootnodes in the tree.
no setter
rootNodes → List<TreeNode<Object?>>: The rootnodes of this tree.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

addListener(VoidCallback listener) → void: Register a closure to be called when the object changes.
inherited
attachRoot(TreeNode<Object?> node, {bool notify = true}) → void: Add a node to the root of this tree
collapseAll({bool notify = true}) → void: Collapses all nodes in the tree.
dispose() → void: Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
expandAll({bool notify = true}) → void: Expands all nodes in the tree.
getByIdentifier(Object identifier, {bool notify = true}) → TreeNode<Object?>: Get a node registered in this controller by its identifier.
maybeGetByIdentifier(Object identifier) → TreeNode<Object?>?: Get a node registered in this controller by its identifier. Returns null if no corresponding node is found.
move(TreeNode<Object?> node, int index, {TreeNode<Object?>? newParent, bool notify = true}) → void: Move a node to a new position in the tree, takes the following arguments:
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void: Call all the registered listeners.
inherited
remove(TreeNode<Object?> node, {bool notify = true}) → void: Remove a node from this tree
removeListener(VoidCallback listener) → void: Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
swap(TreeNode<Object?> node1, TreeNode<Object?> node2, {bool notify = true}) → void: Swap two nodes in the tree. This moves node1 to the position of node2 and node2 to the position of node1.
toString() → String: A string representation of this object.
inherited
traverse(void action(TreeNode<Object?>)) → void: Traverses all the nodes attached to the tree. Calling back action on each node hit.

Operators

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