RFR: 8155030: The Menu Mnemonics are always displayed for GTK LAF [v6]

[Abhishek Kumar]

On Tue, 18 Jun 2024 16:28:50 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   condition update
>
> src/java.desktop/share/classes/javax/swing/plaf/synth/SynthRootPaneUI.java line 115:
> 
>> 113:             KeyboardFocusManager.getCurrentKeyboardFocusManager().
>> 114:                     addKeyEventPostProcessor(altProcessor);
>> 115:         }
> 
> Can this lead to installing `altProcessor` twice or more?

Added flag variable to check of it is installed or not.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18992#discussion_r1647253418