[jira] [Updated] (UIMA-769) AnnotationEditor should support undo and redo

["Richard Eckart de Castilho (JIRA)" <de...@uima.apache.org>]

     [ https://issues.apache.org/jira/browse/UIMA-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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