'Paste' is executed twice

[wahlbrink]

Text from the clipboard is pasted twice into Combo widgets when using the keyboard shortcut under certain conditions.
The issue may also affect other widgets and actions like cut.

Steps to reproduce

In the IDE:

• Copy some text -> text copied into the clipboard
• Activate the Project Explorer and make sure that nothing is selected -> the Paste command is disabled
• Open the "Install New Software" wizard
• Press shortcut for 'Paste' (Ctrl+V) to paste the text in the combo field for the repositories -> the text is pasted twice

Analysis

Paste is performed:

1. Via KeyBindingDispatcher -> HandlerService -> WidgetMethodHandler
2. Via OS event handler (key event -> paste event)

I get the impression, the problem is in KeyBindingDispatcher.

The stack trace for the first paste looks like this:

KeyBindingDispatcher.press -> KeyBindingDispatcher.executeCommand returns wrongly false even though 'Paste' is executed. So the Event in KeyBindingDispatcher.processKeyEvent is not marked as done (doit = false).
KeyBindingDispatcher.executeCommand returns false because command.isEnabled() evaluates to false. This check was added here: 35f5f09 / #3614

I am wondering if shouldn't it use

IEclipseContext staticContext = createContext(trigger);
boolean commandEnabled = handlerService.canExecute(parameterizedCommand, staticContext);

with the correct context instead of command.isEnabled() to evaluate if the command is enabled?

Tested under this environment:

Eclipse IDE
Version: 2026-06 (4.40)
Build id: I20260601-0713
Windows 11

[Phillipus]

Also pastes twice in the "type filter text" text field just below the combo in that wizard, and any text field in a child dialog from that wizard.

[HeikoKlare]

As already mentioned, this is very likely a regression from:

• Process KeyBinding Command Asyncly for Browser #3614

I will have a look at it as soon as possible.