IDiagramModelAdapter

CanRedo

public bool CanRedo { get; }

value = iDiagramModelAdapter.CanRedo

Gets whether an undone adapter operation can be redone.

CanUndo

public bool CanUndo { get; }

value = iDiagramModelAdapter.CanUndo

Gets whether an adapter operation can be undone.

Links

public IReadOnlyList<ICompositionModelLink> Links { get; }

value = iDiagramModelAdapter.Links

Gets a current snapshot of diagram links.

Model

public ICompositionModel Model { get; }

value = iDiagramModelAdapter.Model

Gets the underlying composition model.

Nodes

public IReadOnlyList<ICompositionModelNode> Nodes { get; }

value = iDiagramModelAdapter.Nodes

Gets a current snapshot of diagram nodes.

AddElement

public string AddElement(DiagramElement element, PointF location)

result = iDiagramModelAdapter.AddElement(element, location)

Adds an element as one undoable operation.

element

Element to add.

location

Diagram-space location.

Возвращает: New node key.

FindNode

public ICompositionModelNode FindNode(string key)

result = iDiagramModelAdapter.FindNode(key)

Finds a node by its stable model key.

key

Node key.

Возвращает: The node, or when it is absent.

ImportFragmentAsync

public ValueTask<IReadOnlyList<string>> ImportFragmentAsync(ICompositionModel fragment, PointF offset, CancellationToken cancellationToken)

result = iDiagramModelAdapter.ImportFragmentAsync(fragment, offset, cancellationToken)

Imports every node and internal link from a canonical fragment in one transaction.

fragment

Deserialized canonical fragment model.

offset

Coordinate offset.

cancellationToken

CancellationToken

Возвращает: New target node keys.

MoveNodes

public void MoveNodes(IReadOnlyDictionary<string, PointF> originalLocations, PointF delta, double gridSize)

iDiagramModelAdapter.MoveNodes(originalLocations, delta, gridSize)

Moves a group while preserving its relative coordinates and snapping the anchor.

originalLocations

Original locations keyed by node key.

delta

Requested group displacement.

gridSize

Snap grid size, or zero to disable snapping.

Redo

public void Redo()

iDiagramModelAdapter.Redo()

Redoes the last undone adapter operation.

Remove

public void Remove(IEnumerable<string> nodeKeys, IEnumerable<ICompositionModelLink> links)

iDiagramModelAdapter.Remove(nodeKeys, links)

Removes nodes with every link connected to them, and links of their own, in one model transaction that is one step to undo.

nodeKeys

Node keys to remove.

links

Links to remove besides those of the nodes.

SnapDisplacement

public PointF SnapDisplacement(IReadOnlyDictionary<string, PointF> originalLocations, PointF delta, double gridSize)

result = iDiagramModelAdapter.SnapDisplacement(originalLocations, delta, gridSize)

Finds how far a group lands from where it was when its anchor is snapped, as Double) places it.

originalLocations

Original locations keyed by node key.

delta

Requested group displacement.

gridSize

Snap grid size, or zero to disable snapping.

Возвращает: The displacement with the anchor snapped.

TryConnect

public bool TryConnect(string firstNodeKey, string firstSocketId, string secondNodeKey, string secondSocketId, DiagramConnectionResults result)

result = iDiagramModelAdapter.TryConnect(firstNodeKey, firstSocketId, secondNodeKey, secondSocketId, result)

Validates and creates a directed output-to-input connection.

firstNodeKey

First endpoint node key.

firstSocketId

First endpoint socket identifier.

secondNodeKey

Second endpoint node key.

secondSocketId

Second endpoint socket identifier.

result

Connection validation result.

Возвращает: when the connection was created.

TryRelink

public bool TryRelink(ICompositionModelLink link, string firstNodeKey, string firstSocketId, string secondNodeKey, string secondSocketId, DiagramConnectionResults result)

result = iDiagramModelAdapter.TryRelink(link, firstNodeKey, firstSocketId, secondNodeKey, secondSocketId, result)

Replaces both endpoints of an existing link in one model transaction.

link

Existing link.

firstNodeKey

First new endpoint node key.

firstSocketId

First new endpoint socket identifier.

secondNodeKey

Second new endpoint node key.

secondSocketId

Second new endpoint socket identifier.

result

Connection validation result.

Возвращает: when the link was replaced.

Undo

public void Undo()

iDiagramModelAdapter.Undo()

Undoes the last adapter operation.

ValidateConnection

public DiagramConnectionResults ValidateConnection(string firstNodeKey, string firstSocketId, string secondNodeKey, string secondSocketId, ICompositionModelLink ignoredLink)

result = iDiagramModelAdapter.ValidateConnection(firstNodeKey, firstSocketId, secondNodeKey, secondSocketId, ignoredLink)

Validates a directed output-to-input connection without changing the model.

firstNodeKey

First endpoint node key.

firstSocketId

First endpoint socket identifier.

secondNodeKey

Second endpoint node key.

secondSocketId

Second endpoint socket identifier.

ignoredLink

Existing link ignored while validating a relink operation.

Возвращает: Validation result. Connected means valid.

Changed

public event EventHandler Changed

iDiagramModelAdapter.Changed += handler

Occurs after model data relevant to the diagram changes.