[jira] [Created] (FLEX-34344) DropDownList keeps acting on keyDown and other events after being removed from stage

["Mihai Chira (JIRA)" <ji...@apache.org>]

Mihai Chira created FLEX-34344:
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             Summary: DropDownList keeps acting on keyDown and other events after being removed from stage
                 Key: FLEX-34344
                 URL: https://issues.apache.org/jira/browse/FLEX-34344
             Project: Apache Flex
          Issue Type: Bug
          Components: Spark: DropDownList
    Affects Versions: Apache Flex 4.12.0
            Reporter: Mihai Chira
             Fix For: Apache Flex 4.13.0
         Attachments: _DropDownListListeningTooMuch.fxp

*Steps to reproduce*:
1. Import and run the attached project.
2. Click on the dropdown and select an item.
3. Right click on the dropdown, which removes it from stage.
4. Press UP/DOWN.

*Actual behaviour*: the dropdown's _proposedSelectedIndex keeps changing, showing the dropdown is still acting on keyboard events.
*Desired behaviour*: once it's off stage, the dropdown should not react to keyboard - or any other - events.

*Notes*:
-the same behaviour can be made visible by placing a breakpoint in DropDownListBase.keyDownHandler after step 3.
-I noticed that UIComponent adds event listeners for KEY_DOWN, KEY_UP, FOCUS_IN and FOCUS_OUT, but never removes them. Is the expectation that components themselves will remove these listeners when they're off stage, or is it an omission?



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