DiagramEditorControl

DiagramEditorControl

public DiagramEditorControl()

diagramEditorControl = DiagramEditorControl()

Initializes a new instance of the DiagramEditorControl.

CanPaste

public bool CanPaste { get; }

value = diagramEditorControl.CanPaste

Whether paste is available.

CanRedo

public bool CanRedo { get; }

value = diagramEditorControl.CanRedo

Whether redo is available.

CanUndo

public bool CanUndo { get; }

value = diagramEditorControl.CanUndo

Whether undo is available.

Composition

public CompositionDiagramElement Composition { get; set; }

value = diagramEditorControl.Composition
diagramEditorControl.Composition = value

The composition element being edited.

IsEditing

public bool IsEditing { get; set; }

value = diagramEditorControl.IsEditing
diagramEditorControl.IsEditing = value

Whether editing is enabled.

Panel

public DiagramPanel Panel { get; }

value = diagramEditorControl.Panel

The diagram panel.

SelectedElement

public DiagramElement SelectedElement { get; }

value = diagramEditorControl.SelectedElement

Selected element.

SelectedNodeKey

public string SelectedNodeKey { get; }

value = diagramEditorControl.SelectedNodeKey

Selected node key.

ShowToolbar

public bool ShowToolbar { get; set; }

value = diagramEditorControl.ShowToolbar
diagramEditorControl.ShowToolbar = value

Whether to show the toolbar.

Zoom

public double Zoom { get; set; }

value = diagramEditorControl.Zoom
diagramEditorControl.Zoom = value

Current zoom level.

AddElement

public void AddElement(DiagramElement element)

diagramEditorControl.AddElement(element)

Adds an element to the diagram at default position (0, 0).

element

The element to add.

AddElementAt

public void AddElementAt(DiagramElement element, double x, double y)

diagramEditorControl.AddElementAt(element, x, y)

Adds an element to the diagram at specified position.

element

The element to add.

x

X position on canvas (diagram coordinates).

y

Y position on canvas (diagram coordinates).

ClearDiagram

public void ClearDiagram()

diagramEditorControl.ClearDiagram()

Clear all elements from the diagram.

ConnectPalette

public void ConnectPalette(DiagramPaletteControl palette)

diagramEditorControl.ConnectPalette(palette)

Connects a palette control to this editor for drag-drop support.

palette

The palette control to connect.

Copy

public void Copy()

diagramEditorControl.Copy()

Copy selected elements to clipboard.

Cut

public void Cut()

diagramEditorControl.Cut()

Cut selected elements to clipboard.

Delete

public void Delete()

diagramEditorControl.Delete()

Delete selected elements.

DisconnectPalette

public void DisconnectPalette(DiagramPaletteControl palette)

diagramEditorControl.DisconnectPalette(palette)

Disconnects a palette control from this editor.

palette

The palette control to disconnect.

ExportToImage

public void ExportToImage(string filePath, ExportOptions options)

diagramEditorControl.ExportToImage(filePath, options)

Export the diagram to an image file.

filePath

The output file path.

options

Export options. If null, uses defaults.

ExportToImageBytes

public byte[] ExportToImageBytes(ExportOptions options)

result = diagramEditorControl.ExportToImageBytes(options)

Export the diagram to a byte array.

options

Export options. If null, uses defaults.

Returns: The image data as bytes, or null if export failed.

ExportToImageStream

public void ExportToImageStream(Stream stream, ExportOptions options)

diagramEditorControl.ExportToImageStream(stream, options)

Export the diagram to an image stream.

stream

The output stream.

options

Export options. If null, uses defaults.

HandleDrop

public void HandleDrop(DragEventArgs e)

diagramEditorControl.HandleDrop(e)

Handle drop event on the panel. Call this from DragOver/Drop events.

HandlePaletteDrop

public DiagramElement HandlePaletteDrop(PaletteItem item, Point dropPosition)

result = diagramEditorControl.HandlePaletteDrop(item, dropPosition)

Handles drag events from a palette control. Call this from the palette's DragStarted event handler.

item

The palette item being dragged.

dropPosition

The position on the panel where the item was dropped (screen coordinates).

Returns: The created element, or null if creation failed.

LoadFromFile

public static DiagramFileData LoadFromFile(string filePath)

result = DiagramEditorControl.LoadFromFile(filePath)

Load diagram data from a file. Note: This only returns the data structure. Use composition loading for full restore.

filePath

The file path to load from.

Returns: Diagram file data, or null if invalid.

LoadFromStream

public static DiagramFileData LoadFromStream(Stream stream)

result = DiagramEditorControl.LoadFromStream(stream)

Load diagram data from a stream. Note: This only returns the data structure. Use composition loading for full restore.

stream

The stream to read from.

Returns: Diagram file data, or null if invalid.

OnPropertyChanged

protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)

diagramEditorControl.OnPropertyChanged(change)

Paste

public void Paste()

diagramEditorControl.Paste()

Paste elements from clipboard.

Redo

public void Redo()

diagramEditorControl.Redo()

Redo the last undone operation.

RestoreDiagram

public bool RestoreDiagram(DiagramFileData data, ElementFactory elementFactory)

result = diagramEditorControl.RestoreDiagram(data, elementFactory)

Restore a diagram from file data into the current composition.

data

The file data to restore from.

elementFactory

Optional factory for creating elements by type.

Returns: True if restore was successful.

RestoreFromFile

public bool RestoreFromFile(string filePath, ElementFactory elementFactory)

result = diagramEditorControl.RestoreFromFile(filePath, elementFactory)

Restore a diagram from a file into the current composition.

filePath

The file path to restore from.

elementFactory

Optional factory for creating elements by type.

Returns: True if restore was successful.

SaveToFile

public void SaveToFile(string filePath)

diagramEditorControl.SaveToFile(filePath)

Save the diagram to a file.

filePath

The file path to save to.

SaveToStream

public void SaveToStream(Stream stream)

diagramEditorControl.SaveToStream(stream)

Save the diagram to a stream.

stream

The stream to write to.

SaveToString

public string SaveToString()

result = diagramEditorControl.SaveToString()

Save the diagram to a JSON string.

Returns: JSON representation of the diagram.

SelectAll

public void SelectAll()

diagramEditorControl.SelectAll()

Select all elements.

Undo

public void Undo()

diagramEditorControl.Undo()

Undo the last operation.

ModelModified

public event EventHandler ModelModified

diagramEditorControl.ModelModified += handler

Occurs when the diagram model is modified.

SelectionChanged

public event EventHandler<DiagramElement> SelectionChanged

diagramEditorControl.SelectionChanged += handler

Occurs when the selected diagram element changes.

CompositionProperty

public static readonly StyledProperty<CompositionDiagramElement> CompositionProperty

value = DiagramEditorControl.CompositionProperty

Identifies the Composition dependency property.

IsEditingProperty

public static readonly StyledProperty<bool> IsEditingProperty

value = DiagramEditorControl.IsEditingProperty

Identifies the IsEditing dependency property.

ShowToolbarProperty

public static readonly StyledProperty<bool> ShowToolbarProperty

value = DiagramEditorControl.ShowToolbarProperty

Identifies the ShowToolbar dependency property.