GraphApi<T, C> extension

Graph-level operations for NodeFlowController.

This extension provides methods for:

• Loading and exporting complete graphs
• Graph analysis and validation
• Layout and arrangement operations
• Batch selection operations
• Theme and event configuration
• Keyboard shortcuts

on

• NodeFlowController<T, C>

Properties

nodesBounds → Rect

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Gets the bounding rectangle that encompasses all nodes in the graph.

no setter

Methods

arrangeNodesHierarchically() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Arranges nodes hierarchically by type.

arrangeNodesInGrid({double spacing = 150.0}) → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Arranges all nodes in a grid layout.

clearGraph() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Clears the entire graph, removing all nodes, connections, and selections.

clearSelection() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Clears all selections (nodes and connections) and exits any active editing mode.

deleteSelectedWithConfirmation() → Future<void>

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Deletes all selected nodes and connections with lock check and confirmation.

detectCycles() → List<List<String>>

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Detects cycles in the graph using depth-first search.

exportGraph() → NodeGraph<T, C>

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Exports the current graph state including all nodes, connections, and viewport.

getConnectionsInBounds(Rect bounds, {String? excludeNodeId}) → List<Connection<C>>

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Gets all connections whose segment bounds intersect with the given bounds.

getFirstConnectionInBounds(Rect bounds, {String? excludeNodeId}) → Connection<C>?

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Finds the first connection whose segment bounds intersect with the given bounds.

getOrphanNodes() → List<Node<T>>

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Gets all nodes that have no connections.

hitTestConnections(Offset graphPosition) → String?

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Tests if a point hits any connection.

hitTestPort(Offset graphPosition) → ({bool isOutput, String nodeId, String portId})?

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Hit test for a port at the given graph position.

invertSelection() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Inverts the current node selection.

loadGraph(NodeGraph<T, C> graph) → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Loads a complete graph into the controller.

selectAllConnections() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Selects all connections in the graph.

selectAllNodes() → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Selects all selectable nodes in the graph.

selectNodesByType(String type) → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Selects all nodes of a specific type.

selectSpecificNodes(List<String> nodeIds) → void

Available on NodeFlowController<T, C>, provided by the GraphApi extension

Selects only the specified nodes, clearing any existing selection.