TreeView

classin packageklyn.gui.windows

public class TreeView extends Widget

Widget

└ TreeView

Focusable tree widget backed by a TreeModel.

import klyn.gui.windows
import klyn.gui.windows.events

root = TreeNode("Database", "DB", "root")
root.add(TreeNode("Tables", "[]", "group"))
tree = TreeView(TreeModel(root))
tree.nodeActivated += lambda(event as TreeNodeEvent): print(event.node.text)

Properties

Modifier and Type	Member	Description
public property	activateExpandableNodes `activateExpandableNodes as Boolean = false`	Whether activation is emitted for nodes which also contain children.
public property	emptyText `emptyText as String`	Text centered in the content area when the model has no child node.
public property	model `model as TreeModel`	Tree model rendered by the widget.
public property	rootVisible `rootVisible as Boolean`	Whether the structural model root is rendered as a row.
public readonly property	selectedNode `selectedNode as TreeNode`	Currently selected node, or `null` when nothing is selected.
public property	title `title as String = "Tree"`	Header text painted above the tree rows.

Inherited Properties

Events

Modifier and Type	Member	Description
public event	nodeActivated `nodeActivated as TreeNodeEvent`	Emitted when a node is activated by double-click or Enter.
public event	nodeContextRequested `nodeContextRequested as TreeNodeContextEvent`	Emitted when a node receives a secondary-click context request.
public event	selectionChanged `selectionChanged as TreeNodeEvent`	Emitted as soon as pointer or keyboard navigation selects another node.

Inherited Events

eventInherited Events from Widget: filesDropped, focusGained, focusLost, keyPressed, keyReleased, mouseMoved, mousePressed, mouseReleased, mouseWheel, paintRequested, resized

Constructors

Modifier and Type	Member	Description
public	TreeView `TreeView(model as TreeModel = null)`	Creates a tree view with an optional model.

Methods

Modifier and Type	Member	Description
public	expandNode `expandNode(node as TreeNode, expanded as Boolean = true) as Boolean`	Expands or collapses a node and refreshes the visible rows.
public override	paint `paint(painter as Painter) as Void`	No summary.
public	refreshRows `refreshRows() as Void`	Rebuilds the visible row cache after external code changed nodes.
public	selectNode `selectNode(node as TreeNode) as Boolean`	Selects a visible node and scrolls vertically to reveal it.

Inherited Methods