ucoruh commented on issue #3962:
URL: https://github.com/apache/netbeans/issues/3962#issuecomment-1936436308
I get all comments there and also clipboard code and ask chatgpt to
summarize and find a solution and I think these are can help to solve issue.
Here is the suggestion
To address common issues directly within the provided NbClipboard code, such
as synchronization with the system clipboard and potential improvements for
reliability, let's apply some modifications. These changes aim to refine the
clipboard handling, focusing on synchronization, error handling, and ensuring
the class behaves more predictably across different platforms and scenarios.
## Improved Synchronization with System Clipboard
Enhance the flavorsChanged method to ensure the clipboard contents are
updated more reliably when clipboard events occur.
``` java
@Override
public void flavorsChanged(FlavorEvent e) {
// Immediate synchronization with the system clipboard upon flavor change
scheduleGetFromSystemClipboard(true);
fireChange();
}
```
## Enhanced Error Handling for Clipboard Access
Implement a retry mechanism for setting and getting contents from the system
clipboard to handle temporary unavailability or delays.
``` java
private final int MAX_RETRY_COUNT = 3;
private final long RETRY_DELAY_MS = 100;
private void retrySetContents(final Transferable contents, final
ClipboardOwner owner) {
RP.post(new Runnable() {
int retryCount = 0;
@Override
public void run() {
try {
systemClipboard.setContents(contents, owner);
} catch (IllegalStateException ex) {
if (retryCount < MAX_RETRY_COUNT) {
retryCount++;
log.log(Level.WARNING, "Retrying to set system clipboard
contents. Attempt " + retryCount, ex);
RP.post(this, RETRY_DELAY_MS);
} else {
log.log(Level.SEVERE, "Failed to set system clipboard
contents after retries.", ex);
}
}
}
});
}
@Override
public void setContents(Transferable contents, ClipboardOwner owner) {
retrySetContents(contents, owner);
super.setContents(contents, owner); // Ensure superclass behavior is
preserved
}
```
## Optimize Clipboard Content Conversion
For the resultChanged method, ensure that the convertors array is
efficiently updated without unnecessary array copies.
``` java
@Override
public synchronized void resultChanged(LookupEvent ev) {
Collection<? extends ExClipboard.Convertor> c = result.allInstances();
convertors = c.toArray(new ExClipboard.Convertor[0]);
}
```
## Refine Logging Strategy
Ensure logging is informative and efficient, focusing on areas that are
critical for understanding clipboard operations.
``` java
private void logFlavors (Transferable trans, Level level, boolean content) {
if (log.isLoggable(level) && trans != null) {
DataFlavor[] flavors = trans.getTransferDataFlavors();
for (DataFlavor flavor : flavors) {
log.log(level, "Flavor: " + flavor.getHumanPresentableName());
if (content) {
try {
Object data = trans.getTransferData(flavor);
log.log(level, "Content: " + data.toString());
} catch (Exception e) {
log.log(Level.SEVERE, "Error logging flavor content", e);
}
}
}
}
}
```
## Conclusion
These modifications aim to enhance the NbClipboard class by making it more
robust and responsive to changes in the system clipboard, improving error
handling, and ensuring that logging provides valuable insights without
overwhelming the application's performance. Testing these changes thoroughly in
your development environment is crucial to validate their effectiveness and to
ensure they meet your specific needs without introducing new issues.
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