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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">Greetings!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">Thank you for proposing a solution, Florian. I wonder if we should extrapolate the problem further. Given the fact that app developers always need access to platform specific APIs,
be it integration with Mac menu, perhaps we should consider a way to do so in such a way that does not require various tricks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">For example, we might invent a way to query whether we are running on a certain platform and get the corresponding APIs. Let's say the class is PlatformAPI:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">These methods allow for querying whether the specific platform APIs are available<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">PlatformAPI.isWindows();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">PlatformAPI.isMacOS();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">PlatformAPI.isLinux(); // isUnix()? isPosix() ?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">and these will actually return a service object that provides access to the APIs, or throws some kind of exception:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">IWindowsAPI PlatformAPI.getWindowsAPI();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">IMacOSAPI PlatformAPI.getMacOSAPI();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">the service object returned by one of these methods might provide further information about the platform version, as well as access to platform-specific APIs.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">Another thought is perhaps we ought to think about expanding functionality that became available on every platform in the XXI century (example: going to sleep/hibernate). Possibly
external shutdown via Mac menu or a signal discussed by the OP would be considered as platform-independent.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">What do you think?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New"">-andy<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">openjfx-dev <openjfx-dev-retn@openjdk.org> on behalf of Florian Kirmaier <florian.kirmaier@gmail.com><br>
<b>Date: </b>Tuesday, 2022/09/13 at 08:11<br>
<b>To: </b>openjfx-dev@openjdk.java.net <openjfx-dev@openjdk.java.net><br>
<b>Subject: </b>Provide Quit handler for system menu bar<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Everyone,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><br>
In one project, we have to handle the quit-logic for MacOS ourselves,<br>
when the <quit app> menu entry is used.<br>
As background information - this menu entry is set in the class com.sun.glass.ui.mac.MacApplication.<br>
It's basically hard coded. Currently, in this project, the menu entry doesn't work in some cases.<br>
<br>
My Solution would be:<br>
<br>
Provide a method "Platform.setQuiteHandler(Supplier<Boolean>)"<br>
This handler is called when quit <appname> from the menu is called.<br>
If the handler returns true, all windows are closed. Otherwise, nothing happens.<br>
<br>
It would look like the following:<br>
```<br>
/**<br>
* Sets the handler to be called when the application is about to quit.<br>
* Currently, this can only happen on MacOS.<br>
*<br>
* This handler is called, when the user selects<br>
* the "Quit <appname>" from the application menu.<br>
* When the provided handler returns true,<br>
* the application will close all windows.<br>
* If the handler returns false, the application will not quit.<br>
*<br>
* @param The new quit handler.<br>
*/<br>
public static void setQuitHandler(Supplier x) {<br>
...<br>
}<br>
```<br>
I've created a ticket for this topic. <a href="https://bugs.openjdk.org/browse/JDK-8293700">https://bugs.openjdk.org/browse/JDK-8293700</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><br>
I've got a working version for this change. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">According to Kevin Rushforth this need a prior dicussion on the mailing list.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Any opinion regarding this?<br>
<br>
I could provide a pullrequest, if someone is interested.<br>
<br>
Florian Kirmaier<o:p></o:p></span></p>
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