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List: openjdk-quality-discuss
Subject: Re: FW: suggestions to improve AWT (mostly Linux related)
From: deepak.n.damodaran () oracle ! com
Date: 2021-01-18 9:51:01
Message-ID: 2a670506-cfb2-7422-581e-584409c348c8 () oracle ! com
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Adding OpenJDK quality-discuss group.
Regards
Deepak
On 15/01/21 5:23 pm, deepak.n.damodaran@oracle.com wrote:
>
> Hi Sjoerd Brauer,
>
> Could you please post this in AWT dev group -
> https://mail.openjdk.java.net/pipermail/awt-dev/
> <https://mail.openjdk.java.net/pipermail/awt-dev/> ?
>
> Regards
> Deepak
>
> On 13/01/21 2:26 pm, Sjoerd Brauer wrote:
>>
>> *From:*Sjoerd Brauer
>> *Sent:* woensdag 13 januari 2021 09:54
>> *To:* 'quality-discuss@openjdk.java.net'
>> <quality-discuss@openjdk.java.net>
>> *Subject:* suggestions to improve AWT (mostly Linux related)
>>
>> Dear all,
>>
>> I’ve been working with a Raspbian CLI environment for a while and
>> notice some unexpected behavior from AWT.Robot.
>>
>> 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).
>>
>> 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.
>>
>> This is the part where I believe AWT can be improved.
>>
>> Yes I understand AWT exists for creating a GUI and CLI is not
>> considered a GUI.
>>
>> Yes I understand and agree that because using a CLI some AWT related
>> stuff should not work.
>>
>> Even though this is the case there already exists some exceptions of
>> using AWT in a headless environment as described by Oracle:
>>
>> https://www.oracle.com/technical-resources/articles/javase/headless.html
>> <https://www.oracle.com/technical-resources/articles/javase/headless.html>
>> (I’m assuming OpenJDK shares this behavior but I didn’t test this).
>>
>> I suggest the following improvements to the AWT.
>>
>> * 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 https://pypi.org/project/keyboard/
>> <https://pypi.org/project/keyboard/> is a great example on
>> how you could do this (albeit written in python).
>> * Separate the headless exception into headless and a new
>> CLIEnvironment exception.
>>
>> Because the AWT is part of the Java Foundation Classes I’m writing
>> this to you.
>>
>> Hopefully you find my feedback useful.
>>
>> Kind regards,
>>
>> Sjoerd Brauer
>>
>> Legal Disclaimer :
>> The information contained in this message may be privileged and
>> confidential.
>> It is intended to be read only by the individual or entity to whom it
>> is addressed
>> or by their designee. If the reader of this message is not the
>> intended recipient,
>> you are on notice that any distribution of this message, in any form,
>> is strictly prohibited. If you have received this message in error,
>> please immediately notify the sender and delete or destroy any copy
>> of this message!
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<p>Adding OpenJDK quality-discuss group.</p>
Regards<br>
Deepak<br>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 15/01/21 5:23 pm,
<a class="moz-txt-link-abbreviated" \
href="mailto:deepak.n.damodaran@oracle.com">deepak.n.damodaran@oracle.com</a> \
wrote:<br> </div>
<blockquote type="cite"
cite="mid:56d7e449-6773-79af-5109-1f75ff413b71@oracle.com">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<p>Hi <span lang="EN-US">Sjoerd Brauer,</span></p>
<p><span lang="EN-US">Could you please post this in AWT dev group
- <a moz-do-not-send="true"
href="https://mail.openjdk.java.net/pipermail/awt-dev/">https://mail.openjdk.java.net/pipermail/awt-dev/</a>
?<br>
</span></p>
<span lang="EN-US">Regards</span><br>
<span lang="EN-US">Deepak<br>
</span>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 13/01/21 2:26 pm, Sjoerd Brauer
wrote:<br>
</div>
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<p class="MsoNormal"><b><span
style="mso-fareast-language:NL" \
lang="EN-US">From:</span></b><span style="mso-fareast-language:NL" lang="EN-US"> \
Sjoerd Brauer <br>
<b>Sent:</b> woensdag 13 januari 2021 09:54<br>
<b>To:</b> '<a class="moz-txt-link-abbreviated"
href="mailto:quality-discuss@openjdk.java.net"
moz-do-not-send="true">quality-discuss@openjdk.java.net</a>'
<a class="moz-txt-link-rfc2396E"
href="mailto:quality-discuss@openjdk.java.net"
moz-do-not-send="true"><quality-discuss@openjdk.java.net></a><br>
<b>Subject:</b> suggestions to improve AWT (mostly
Linux related)<o:p></o:p></span></p>
</div>
</div>
<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"
moz-do-not-send="true">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/"
moz-do-not-send="true">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>
</div>
<div> Legal Disclaimer :<br>
The information contained in this message may be privileged
and confidential. <br>
It is intended to be read only by the individual or entity to
whom it is addressed <br>
or by their designee. If the reader of this message is not the
intended recipient, <br>
you are on notice that any distribution of this message, in
any form, <br>
is strictly prohibited. If you have received this message in
error, <br>
please immediately notify the sender and delete or destroy any
copy of this message!<br>
</div>
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</blockquote>
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