# Classes R–U Import these from `@grafloria/engine`. ## Classes ### `ResizeNodeCommand` Also has every member of `Command`, listed on its own entry. ```ts class ResizeNodeCommand extends Command ``` **Methods** - `constructor( private nodeId: string, newSize: Size, oldSize?: Size )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override canMergeWith(other: Command): boolean` — Check if can merge with another command - `override mergeWith(other: Command): Command` — Merge with another command - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `RotateNodeCommand` Also has every member of `Command`, listed on its own entry. Rotate a node to an absolute angle (degrees), undoable. Mirrors {@link ResizeNodeCommand }: `oldRotation` is captured on first execute when the caller did not supply it, so a command built from a live gesture (the model already sits at its final angle) still restores the pre-gesture angle. ```ts class RotateNodeCommand extends Command ``` **Methods** - `constructor( private nodeId: string, newRotation: number, oldRotation?: number, options: RotateNodeCommandOptions = {} )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override canMergeWith(other: Command): boolean` — Check if can merge with another command - `override mergeWith(other: Command): Command` — Merge with another command - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SendNodeToBackCommand` Also has every member of `Command`, listed on its own entry. Drop a node behind every other node in the diagram. ```ts class SendNodeToBackCommand extends NodeZOrderCommand ``` **Methods** - `constructor(nodeId: string)` - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone ### `SetFlexItemCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetFlexItemCommand extends Command ``` **Methods** - `constructor( private nodeId: string, private flexConfig: FlexItemConfig )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetGridItemCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetGridItemCommand extends Command ``` **Methods** - `constructor( private nodeId: string, private gridConfig: GridItemConfig )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetLayoutCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetLayoutCommand extends Command ``` **Methods** - `constructor( private groupId: string, private layoutType: 'flexbox' | 'grid', private layoutConfig: LayoutConfig )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetLinkDisplayLabelCommand` Also has every member of `Command`, listed on its own entry. Set a link's display label — the `metadata.label` dialect — undoable. Links carry TWO label dialects: the POSITIONED `labels[]` collection ({@link SetLinkLabelCommand } edits those) and the canonical display label every spec input writes (`edges: [{ label: 'in stock' }]` → `link.setLabel()` → `metadata.label`, painted at the path's midpoint by the SVG renderer). The second dialect had no command at all, so the label a demo/e2e/user actually SEES on an edge could not be edited undoably — the in-place editor only knew `labels[]`, which that edge does not have. The exact twin of {@link SetNodeLabelCommand }, for the same reason. ```ts class SetLinkDisplayLabelCommand extends Command ``` **Methods** - `constructor( private linkId: string, newLabel: string, oldLabel?: string )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override canMergeWith(): boolean` — One editor session = one undo step. - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetLinkLabelCommand` Also has every member of `Command`, listed on its own entry. Set the text of one of a link's labels, undoable. The inline label editor commits through this command, so an edge-label edit is one undo step like every other direct-manipulation edit. ```ts class SetLinkLabelCommand extends Command ``` **Methods** - `constructor( private linkId: string, private labelIndex: number, newText: string, oldText?: string )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override canMergeWith(): boolean` — One editor session = one undo step. - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetLinkLabelsCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetLinkLabelsCommand extends Command ``` **Methods** - `constructor( private readonly linkId: string, private readonly labels: LinkLabel[] )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetLinkPathTypeCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetLinkPathTypeCommand extends Command ``` **Methods** - `constructor( private readonly linkId: string, private readonly pathType: LinkPathType )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetNodeDataCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetNodeDataCommand extends Command ``` **Methods** - `constructor( nodeId: string | readonly string[], private readonly data: Readonly> )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetNodeLabelCommand` Also has every member of `Command`, listed on its own entry. Set a node's label text, undoable. A node's label lives in metadata under `label` (that is what `SVGRenderer.renderNodeLabel` reads), so this command is the metadata write plus the dirty flag the renderer needs to repaint. It exists because in-place text editing must be ONE undo step like every other direct manipulation — before this, nothing in the command layer could touch a label. ```ts class SetNodeLabelCommand extends Command ``` **Methods** - `constructor( private nodeId: string, newLabel: string, oldLabel?: string )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override canMergeWith(): boolean` — Never merge: each committed edit (one editor session) is one undo step. - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetNodeShapeConfigCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetNodeShapeConfigCommand extends Command ``` **Methods** - `constructor( private readonly nodeId: string, private readonly patch: Readonly> )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetNodeStyleCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetNodeStyleCommand extends Command ``` **Methods** - `constructor( nodeId: string | readonly string[], private readonly style: Partial )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `SetNodeZIndexCommand` Also has every member of `Command`, listed on its own entry. Set a node's stacking index to an explicit value. ```ts class SetNodeZIndexCommand extends NodeZOrderCommand ``` **Methods** - `constructor(nodeId: string, private zIndex: number)` - `override canMergeWith(other: Command): boolean` — Check if can merge with another command - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone ### `SetParentCommand` Also has every member of `Command`, listed on its own entry. ```ts class SetParentCommand extends Command ``` **Methods** - `constructor( private nodeId: string, private newParentId?: string )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI ### `UpdateLinkStyleCommand` Also has every member of `Command`, listed on its own entry. ```ts class UpdateLinkStyleCommand extends Command ``` **Methods** - `constructor( private readonly linkId: string, private readonly style: Partial )` - `override execute(context: CommandContext): void` — Execute the command - `override undo(context: CommandContext): void` — Undo the command - `override canExecute(context: CommandContext): boolean` — Check if command can be executed - `override canUndo(context: CommandContext): boolean` — Check if command can be undone - `override serialize(): SerializedCommand` — Serialize command - `override getDescription(): string` — Get description for UI