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https://issues.apache.org/jira/browse/UIMA-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Eckart de Castilho updated UIMA-769:
--------------------------------------------
Labels: Stale (was: )
This issue is marked as "stale" due to inactivity for 5 years or longer. If no
further activity is detected on this issue, it is scheduled be closed as
'unresolved' in 3 months time from now (Dec 2016).
> AnnotationEditor should support undo and redo
> ---------------------------------------------
>
> Key: UIMA-769
> URL: https://issues.apache.org/jira/browse/UIMA-769
> Project: UIMA
> Issue Type: Improvement
> Components: CAS Editor
> Affects Versions: 2.3
> Reporter: Joern Kottmann
> Assignee: Joern Kottmann
> Priority: Minor
> Labels: Stale
>
> Modifications in the Annotation Editor should be undone and redone.
> To support undo and redo the Annotation Editor needs to track all
> modifications done to the CAS. That is only possible if the changed event is
> not triggered, which does not specify what changed. When this event is
> triggered the history (and redo list) can just be cleaned.
> A user might add an annotation accidentally and quickly wants to remove it
> again. In many tools undo is a commonly used command for this.
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