Class: RestoreGeometry

Defined in: src/diagram/commands.ts:31

Command to restore element positions and sizes, link geometry (vertices) on a canvas.

Example:

const capturedGeometry = RestoreGeometry.capture(model);
// ... (move elements, change link vertices) ...
restoreGeometry = capturedGeometry.filterOutUnchanged();
if (restoreGeometry.hasChanges()) {
    model.history.registerToUndo(restoreGeometry);
}

Implements

• Command

Accessors

title

Get Signature

get title(): TranslatedText

Defined in: src/diagram/commands.ts:68

Command title to display in the UI.

Returns

TranslatedText

Command title to display in the UI.

Implementation of

Command.title

Methods

filterOutUnchanged()

filterOutUnchanged(): RestoreGeometry

Defined in: src/diagram/commands.ts:87

Creates a derived RestoreGeometry command by removing any geometry state which is equal to the current diagram content geometry state.

This is useful to avoid adding a command without actual changes to the command history and to reduce the amount of memory to store captured geometry withing the command.

Returns

RestoreGeometry

---

hasChanges()

hasChanges(): boolean

Defined in: src/diagram/commands.ts:76

Returns true if command contains any captured geometry state to restore, otherwise false.

Returns

boolean

---

invoke()

invoke(): RestoreGeometry

Defined in: src/diagram/commands.ts:101

Performs the command action.

Returns

RestoreGeometry

Inverse command to reverse changes done by the action.

Implementation of

Command.invoke

---

capture()

static capture(graph): RestoreGeometry

Defined in: src/diagram/commands.ts:46

Creates RestoreGeometry command with captured geometry for all diagram content.

Parameters

Parameter	Type
graph	GraphStructure

Returns

RestoreGeometry

---

capturePartial()

static capturePartial(elements, links): RestoreGeometry

Defined in: src/diagram/commands.ts:54

Creates RestoreGeometry command with captured geometry for the specified subset of a diagram content.

Parameters

Parameter	Type
elements	readonly Element[]
links	readonly Link[]

Returns

RestoreGeometry