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https://issues.apache.org/jira/browse/PIVOT-994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16293487#comment-16293487
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Roger Whitcomb commented on PIVOT-994:
--------------------------------------
Note: running the "alert_prompt_test.bxml" file using ScriptApplication does
not have this problem. So, likely this has to do with the specific
code/environment in BXMLExplorer.
> BXMLExplorer is getting a null display for a visible owner window.
> ------------------------------------------------------------------
>
> Key: PIVOT-994
> URL: https://issues.apache.org/jira/browse/PIVOT-994
> Project: Pivot
> Issue Type: Bug
> Components: core-beans
> Affects Versions: 2.0.4, 2.1
> Environment: All
> Reporter: Roger Whitcomb
> Assignee: Roger Whitcomb
> Priority: Minor
> Fix For: 2.1
>
>
> Run the BXML Explorer Tutorial application. Open up the
> "org/apache/pivot/tests/alert_prompt_test.bxml" file and try to bring up any
> of the alerts or prompts. There will be an IllegalArgumentException that
> "display is null."
> The stack trace (for 2.0.x) shows this:
> java.lang.IllegalArgumentException: display is null.
> at org.apache.pivot.wtk.Window.open(Window.java:630)
> at org.apache.pivot.wtk.Dialog.open(Dialog.java:186)
> at org.apache.pivot.wtk.Alert.alert(Alert.java:359)
> at org.apache.pivot.wtk.Alert.alert(Alert.java:331)
> at jdk.nashorn.internal.scripts.Script$3$\^eval\_.:program(<eval>:1)
> at
> jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:637)
> at
> jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:494)
> at
> jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
> at
> jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:449)
> at
> jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:406)
> at
> jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:402)
> at
> jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:155)
> at javax.script.AbstractScriptEngine.eval(Unknown Source)
> at
> org.apache.pivot.beans.BXMLSerializer$AttributeInvocationHandler.invoke(BXMLSerializer.java:156)
> This sequence shows that "owner.getDisplay()" is returning null at
> Alert.open() time, even though the owner window is clearly visible at the
> time.
> This could possibly be due to Nashorn scripting issues with Java 8, since the
> "window" variable would be set in the JS namespace, but this doesn't really
> explain why the "display" value is null, and not the "window" value itself.
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