Enum fields trimmed when they shouldn't be

[irierr]

MBBO ZRST-FFST fields in an IOC can be defined with trailing whitespace, and Phoebus correctly reads these in.
However, it appears that when Phoebus writes these strings to a PV it trims the whitespace, and sends this to try and match the value with the IOC, but it no longer matches as it is missing the trailing whitespace.
This causes the following error in the IOC:

recGblRecordError: <string_to_you_tried_to_set> Illegal choice PV: <record_name>

and the following error in Phoebus (when using CA):

Exception occured, code: gov.aps.jca.CAStatus\[PUTFAIL=20,WARNING=0\]=Could not perform a database value put for that channel, message: '<record_name>'.

or if using PVA it causes a much longer error message (~700 lines). Here is a snippet of that error:

WARNING [org.csstudio.display.builder.runtime] Widget Combo Box write error for value short test
java.lang.Exception: Cannot write <string_to_you_tried_to_set> to PV pva://<record_name>
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:114)
        at org.csstudio.display.builder.runtime.WidgetRuntime.writePrimaryPV(WidgetRuntime.java:382)
        at org.csstudio.display.builder.runtime.RuntimeUtil$1.handleWrite(RuntimeUtil.java:52)
        at org.csstudio.display.builder.representation.ToolkitRepresentation.fireWrite(ToolkitRepresentation.java:682)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.confirm(ComboRepresentation.java:198)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.lambda$createJFXNode$0(ComboRepresentation.java:78)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:138)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.util.concurrent.TimeoutException
        at java.base/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:2006)
        at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2141)
        at org.phoebus.pv.pva.PVA_PV.write(PVA_PV.java:197)
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:110)
        ... 12 more

I would imagine removing whitespace trimming when getting Enum string values would fix this but I am not familiar with Phoebus code.

[eddybl]

actually reading in the strings work if I remember correctlly, so for example an mbbi record will be displayed correctly, but changing/sending the data from Phoebus does not work.

I assume this behaviour makes sense for the text input widget, but should probably not be applied to other widgets without user-based text input options