Prevent empty category nodes from being dragged into the workflow #1760
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The current check for deciding whether a toolbox node can be dragged into the workflow was based on testing for number of children, i.e. operator nodes are always leaf nodes either in hierarchical or search mode.
However, category nodes can also be leaf nodes if there are no operators of that category. This can easily happen for the
Workflow
andSubject
categories. An additional restriction to prevent this is to check whether the node actually has a non-null contentTag
.Fixes #1759