ASPxClientDiagramRequestEditOperationEventArgs.operation Property
In This Article
Identifies the operation currently being processed.
#Declaration
TypeScript
operation: DiagramEditOperation
#Property Value
Type | Description |
---|---|
Diagram |
The operation. |
#Remarks
Use the operation property to determine the operation currently being processed in the RequestEditOperation event.
function onRequestEditOperation(s, e) {
if(e.operation === DiagramEditOperation.ResizeShape) {
if(e.args.newSize.width < 1 || e.args.newSize.height < 0.75) {
if(e.reason !== DiagramRequestEditOperationReason.CheckUIElementAvailability)
showWarning("The shape size is too small.");
e.allowed = false;
}
}
else if(e.operation === DiagramEditOperation.ChangeShapeText) {
if(e.args.text === "") {
if(e.reason !== DiagramRequestEditOperationReason.CheckUIElementAvailability)
showWarning("A shape text cannot be empty.");
e.allowed = false;
}
}
...
}
Note that if you want to disable a specific operation type for the entire diagram, you can also set an Allow{Operation} property to false
. The table below lists the available operations, their descriptions, and corresponding Allow{Operation} properties.
Operation | User action / IU update operation causes the event to be raised | Allow{Operation} property |
---|---|---|
Add |
A user is about to add a shape / The control determines the Paste command’s visibility. | Allow |
Add |
The control determines the visibility of a shape in the toolbox or context toolbox. | Allow |
Before |
A user is about to edit a connector’s text. | Allow |
Before |
A user is about to edit a shape’s text. | Allow |
Change |
A user is about to link or delink a connector from a shape / The control determines a connection point’s visibility. | Allow |
Change |
A user changed a connector’s points. | Allow |
Change |
A user changed a connector’s text. | Allow |
Change |
A user changed a shape’s text. | Allow |
Delete |
A user is about to delete a connector / The control determines the Cut and Delete commands’ visibility. | Allow |
Delete |
A user is about to delete a shape / The control determines the visibility of the Cut and Delete commands. | Allow |
Move |
A user moved a shape. | Allow |
Resize |
A user resized a shape. | Allow |
The operation property value defines the type of the args property value.
See Also