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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:NL">From:</span></b><span lang="EN-US" style="mso-fareast-language:NL"> Sjoerd Brauer
<br>
<b>Sent:</b> woensdag 13 januari 2021 09:54<br>
<b>To:</b> 'quality-discuss@openjdk.java.net' <quality-discuss@openjdk.java.net><br>
<b>Subject:</b> suggestions to improve AWT (mostly Linux related)<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’ve been working with a Raspbian CLI environment for a while and notice some unexpected behavior from AWT.Robot.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Java registers the Raspbian CLI as a headless environment even though it can be accessed directly through a keyboard and mouse (I did as well).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When fooling the java environment by setting the headless property to false it throws X11 errors because it relies on an X server to do the IO stuff.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This is the part where I believe AWT can be improved.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yes I understand AWT exists for creating a GUI and CLI is not considered a GUI.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yes I understand and agree that because using a CLI some AWT related stuff should not work.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Even though this is the case there already exists some exceptions of using AWT in a headless environment as described by Oracle:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://www.oracle.com/technical-resources/articles/javase/headless.html">https://www.oracle.com/technical-resources/articles/javase/headless.html</a> (I’m assuming OpenJDK shares this behavior but I didn’t test
this).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I suggest the following improvements to the AWT.<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo3"><span lang="EN-US">Don’t make IO simulation classes like AWT.Robot rely on the X-Server but make it work directly on the OS IO system.<o:p></o:p></span></li><ul style="margin-top:0cm" type="circle">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level2 lfo3"><span lang="EN-US"><a href="https://pypi.org/project/keyboard/">https://pypi.org/project/keyboard/</a> is a great example on how you could do this (albeit written in python).<o:p></o:p></span></li></ul>
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo3"><span lang="EN-US">Separate the headless exception into headless and a new CLIEnvironment exception.<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Because the AWT is part of the Java Foundation Classes I’m writing this to you.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hopefully you find my feedback useful.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Sjoerd Brauer <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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