how to get find out the keyboard shortcut for the paste action?
Jeremy Wood
mickleness at gmail.com
Fri Mar 8 23:40:08 UTC 2024
Alexey,
> Does the input map of JTextArea contain shortcuts for Cut, Copy and
Paste?
When I call (on my Mac, using openJDK 17)
UIManager.getDefaults().get("TextArea.focusInputMap”)
… I get an InputMap with: “copy-to-clipboard”, “cut-to-clipboard”, and
“paste-from-clipboard”.
The code I tested against is:
InputMap inputMap = (InputMap) UIManager.getDefaults().get("TextArea.focusInputMap");
Map<Object, Collection<KeyStroke>> map = new TreeMap<>();
for (KeyStroke keyStroke : inputMap.keys()) {
Object key = inputMap.get(keyStroke);
Collection value = map.get(key);
if (value == null) {
value = new HashSet();
map.put(key, value);
}
value.add(keyStroke);
}
for (Map.Entry<Object, Collection<KeyStroke>> e : map.entrySet()) {
System.out.println(e);
}
Previous tests showed the same naming convention on Windows for
JTextFields; I don’t know how standardized that naming convention is
across all platforms / L&F’s.
- Jeremy
------ Original Message ------
>From mark.yagnatinsky at barclays.com
To alexey.ivanov at oracle.com; mickleness at gmail.com;
client-libs-dev at openjdk.org
Date 3/5/24, 11:48:48 AM
Subject RE: how to get find out the keyboard shortcut for the paste
action?
>Thanks, this was educational. I never even thought about how localization might affect all this.
>
>-----Original Message-----
>From: Aleksei Ivanov <alexey.ivanov at oracle.com>
>Sent: Tuesday, March 5, 2024 10:41 AM
>To: Yagnatinsky, Mark : Markets Pre Trade <mark.yagnatinsky at barclays.com>; mickleness at gmail.com; client-libs-dev at openjdk.org
>Subject: Re: how to get find out the keyboard shortcut for the paste action?
>
>
>CAUTION: This email originated from outside our organisation - alexey.ivanov at oracle.com Do not click on links, open attachments, or respond unless you recognize the sender and can validate the content is safe.
>Hello Mark,
>
>As far as I know, the shortcuts are localisable. For example, you use
>Ctrl+S to save a file in an English version, yet users of Spanish
>version of Windows use Ctrl+G (for Guardar) instead.
>
>At the same time, the most common actions — Cut, Copy and Paste as well as Undo and Redo — usually have the same shortcuts across all languages and OS, although macOS uses Cmd instead of Ctrl. However, the shortcut for Redo is not as standard, Ctrl+Shift+Z and Ctrl+Y are used, both could be mapped at the same time.
>
>I wonder what is the shortcut for Undo in German versions since German keyboard layout has Z and Y keys swapped. Does anyone know?
>
>So, the shortcuts used in an application are controlled by the application and the shortcuts can be localised.
>
>For this reason, the shortcuts are usually “hardcoded”.
>
>
>@Jeremy
>Does the input map of JTextArea contain shortcuts for Cut, Copy and Paste?
>
>On 2024-03-04 20:42, mark.yagnatinsky at barclays.com wrote:
>>
>> Thanks! I don’t have a particularly deep motivation here, other than
>> curiosity.
>>
>> If you’re wondering how my curiosity got piqued initially, it was
>> something like this:
>>
>> A while ago, someone at work was adding copy/paste support to some
>> component that didn’t have it.
>>
>> I noticed that they “hardcoded” the shortcut “ctrl C”.
>>
>> And I thought to myself:
>>
>> Swing already “knows” that this is the right keyboard shortcut, in the
>> sense that all components that support copy/paste “out of the box” use it.
>>
>> It would be nice if there was some way to ASK it to tell me what it
>> “knows”.
>>
>> *From:* Jeremy Wood <mickleness at gmail.com>
>> *Sent:* Sunday, March 3, 2024 11:30 PM
>> *To:* Yagnatinsky, Mark : Markets Pre Trade
>> <mark.yagnatinsky at barclays.com>; client-libs-dev at openjdk.org
>> *Subject:* Re[2]: how to get find out the keyboard shortcut for the
>> paste action?
>>
>> CAUTION: This email originated from outside our organisation -
>>mickleness at gmail.com Do not click on links, open attachments, or
>> respond unless you recognize the sender and can validate the content
>> is safe.
>>
>> > But now I have a new question…
>>
>> > Is there any way to get the “usual” letter for a “common” operation?
>>
>> Hmm. Good question. Not that I know of.
>>
>> > Again, one could create a scratch text area and grovel through its
>> input map, but that seems hacky.
>>
>> I agree sifting through the L&F seems hacky.
>>
>> I don’t think I understand exactly what you’re trying to implement
>> here. If you give me a more concrete example: maybe I (or someone on
>> this list) can offer a more concrete suggestion?
>>
>> I’ll add some context in case this speaks to your question.
>>
>> By default Swing gets this information in places like
>> BasicTextUI#getInputMap(), which calls:
>>
>> InputMap shared= (InputMap)DefaultLookup./get/(editor, this,
>> getPropertyPrefix() + ".focusInputMap”);
>>
>> The following works on my Mac & Windows machine (I think using JDK
>> 19), but I wouldn’t be surprised if it fails in other platforms /
>> L&F’s. It feels brittle, but it might (?) have potential:
>>
>> private KeyStroke getCopyKeyStroke() {
>>
>> InputMap inputMap = (InputMap)
>> UIManager.getDefaults().get("TextField.focusInputMap"); for (KeyStroke
>> keyStroke : inputMap.keys()) { Object action =
>> inputMap.get(keyStroke); if ("copy-to-clipboard".equals(action)) {
>> return keyStroke; } } /// this will show all the default
>> keystrokes // System.out.println(Arrays.asList(inputMap.allKeys()));
>> /return null; }
>>
>> Regards,
>>
>> - Jeremy
>>
>> ------ Original Message ------
>>
>> From mark.yagnatinsky at barclays.com
>>
>> To mickleness at gmail.com; client-libs-dev at openjdk.org
>>
>> Date 3/3/24, 6:00:46 PM
>>
>> Subject RE: how to get find out the keyboard shortcut for the paste
>> action?
>>
>> Thanks for the response! I didn’t expect to get one at this point
>> J
>>
>> It does indeed answer my question!
>>
>> (Though you didn’t quite get the name right: there’s no Ex at the
>> end…
>>
>> I take it you’ve done some Windows programming at some point)
>>
>> But now I have a new question…
>>
>> Is there any way to get the “usual” letter for a “common” operation?
>>
>> For instance, lots of programs support copy and paste.
>>
>> Is there a way to ask Java “what is the standard letter for paste”
>> and get back “V”?
>>
>> Again, one could create a scratch text area and grovel through its
>> input map, but that seems hacky.
>>
>--
>Regards,
>Alexey
>
>This message is for information purposes only. It is not a recommendation, advice, offer or solicitation to buy or sell a product or service, nor an official confirmation of any transaction. It is directed at persons who are professionals and is intended for the recipient(s) only. It is not directed at retail customers. This message is subject to the terms at: https://www.ib.barclays/disclosures/web-and-email-disclaimer.html.
>
>For important disclosures, please see: https://www.ib.barclays/disclosures/sales-and-trading-disclaimer.html regarding marketing commentary from Barclays Sales and/or Trading desks, who are active market participants; https://www.ib.barclays/disclosures/barclays-global-markets-disclosures.html regarding our standard terms for Barclays Investment Bank where we trade with you in principal-to-principal wholesale markets transactions; and in respect to Barclays Research, including disclosures relating to specific issuers, see: http://publicresearch.barclays.com.
>__________________________________________________________________________________
>If you are incorporated or operating in Australia, read these important disclosures: https://www.ib.barclays/disclosures/important-disclosures-asia-pacific.html.
>__________________________________________________________________________________
>For more details about how we use personal information, see our privacy notice: https://www.ib.barclays/disclosures/personal-information-use.html.
>__________________________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/client-libs-dev/attachments/20240308/efe6cbdb/attachment-0001.htm>
More information about the client-libs-dev
mailing list