View Issue Details

IDProjectCategoryView StatusLast Update
0004338Slicer4Core: MRMLpublic2017-10-18 01:18
Reporterjohan.andruejolAssigned Toalexy 
PrioritynormalSeverityfeatureReproducibilityN/A
Status assignedResolutionopen 
Product VersionSlicer 4.7.0 
Target VersionbacklogFixed in Version 
Summary0004338: Node should be notified they are being referenced/unreferenced
Description

As of now, it is possible to catch event whenever you add/modify/remove a reference on a node. The problem is that this event is only sent on the node that starts/modifies/ends the referencing.

It would be great if the referenced node also got notifications that it's being referenced/unreferenced.
For example:
transformableNode->SetAndObserveTransformID(transform->GetID())
-> The transformable node gets an event that a reference was added to it but the
transform doesn't know that it's being referenced.

Steps To Reproduce

Example:
| transformableNode->SetAndObserveTransformID(transform->GetID())
-> The transformable node gets an event that a reference was added to it but the
transform doesn't know that it's being referenced.

Ideally, the transform node would also receive an event (NodeReferencedEvent/NodeUnReferencedEvent ?) it could act on.

TagsNo tags attached.

Activities

lassoan

lassoan

2017-06-16 20:50

developer   ~0014901

The motivation for this is the transform's module interaction widget extent update: when a transformable is added under a transform node, the interaction widget's bounding box needs to be updated. However, the transform node doesn't know when a transformable node sets it as its parent. The current implementation requires the user to manually reset the bounding box, which is not too bad (sometimes it is good that the bounding box is only recomputed on request).

Issue History

Date Modified Username Field Change
2017-02-03 12:08 johan.andruejol New Issue
2017-02-03 12:08 johan.andruejol Status new => assigned
2017-02-03 12:08 johan.andruejol Assigned To => alexy
2017-06-16 20:50 lassoan Note Added: 0014901
2017-10-18 01:18 jcfr Product Version Slicer 4.8.1 => Slicer 4.7.0
2017-10-18 01:18 jcfr Target Version Slicer 4.8.1 => backlog