[jira] [Commented] (CB-11394) backbutton eventlistener should be able to let cordova execute the default native behaviour

["Joe Bowser (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CB-11394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15456354#comment-15456354 ] 

Joe Bowser commented on CB-11394:
---------------------------------

Is this about the backbutton or menubutton?

> backbutton eventlistener should be able to let cordova execute the default native behaviour
> -------------------------------------------------------------------------------------------
>
>                 Key: CB-11394
>                 URL: https://issues.apache.org/jira/browse/CB-11394
>             Project: Apache Cordova
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Android
>            Reporter: Philipp Kursawe
>
> When we override the "menubutton" with a custom handler, cordova completly skips handling of the native behaviour (as written in the docs).
> It does this even though the events `defaultPrevented` property is set to `false`. A proper implementation of event handling would look into this property  and act accordingly.
> Not sure how this could be introduced now without breaking old code.
> Probably old code never returns a value from the event handler. So a patch could check if the return value is `===true` then it should perform the default native behaviour of that button.



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