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[news.eclipse.newcomer] Re: How can I get notified when CTRL+click (open declaration) is executed?
Bogdan Dit wrote: 
Hi Dani,

I added a part listener so that I can find out when the editor was opened/activated. However, I don't know how to look in the stack to see the event that triggers it. Can you please tell me the class name of the stack/listener?
It's nothing Eclipse specific - just pure Java. You can either use "new Throwable().getStackTrace()" which has the drawback of not always looking the same due to VM differences or you can use "java.lang.SecurityManager.getClassContext()".

Dani 

Here is my part listener code:

IWorkbenchPage page=window.getActivePage();
page.addPartListener(new IPartListener()
{
//...other methods partOpened, partDeactivated, partClosed, partBroughtToTop
public void partActivated(IWorkbenchPart part)
{
if (part instanceof EditorPart)
{
//a new file was activated in the editor
//How can I look at the stack to see what triggered?
}
}
});

Thank you,
Bogdan

Daniel Megert wrote:

Bogdan Dit wrote: 
Hi Dani,

I am conducting a study that analyzes how people open files in Eclipse. I just want to be notified when the user is opening a declaration (using CTRL+click) so that I can capture this interaction in a log file. I already know how to capture the interaction when the user opens a declaration using F3 or the menu "Navigate->Open Declaration".
There's no hook to detect that the hyperlink got clicked. You could add a part listener and then look in the stack what triggered it.

Dani 
Thank you
Bogdan

Daniel Megert wrote:

Bogdan wrote: 
Hello,

I am writing a plug-in (using Eclipse 3.4) and I want to be notified if a user opens a file using CTRL+click (open declaration) in a Java source code file.
What exactly do you want to achieve?

Dani

So far, I added a IExecutionListener to a ICommandService for the current workbench window:

IWorkbenchWindow window = PlatformUI.getWorkbench().getWorkbenchWindows()[0];

ICommandService service = (ICommandService) window.getService(ICommandService.class);
service.addExecutionListener(new IExecutionListener() {

//ￜ other methods (notHandled, postExecuteFailure, postExecuteSuccess)

public void preExecute(String commandId, ExecutionEvent event) {
//check for "open declaration" events
}
});

This code works fine (I triggers an ￜopen declarationￜ event which I catch it inside the preExecute function) but ONLY in the following TWO cases: 1) if I press F3 (Open declaration) or 2) Go to menu ￜNavigate->Open Declaration F3ￜ. However, when I use CTRL+click (which the documentation says should do the same thing (open declaration)), that event does not trigger my preExecute function.

I also added an IPartListener to the active Workbench page to notify me when a new file is being opened. This notifies me when a new file was opened, but it does not tell me the source of the event (whether it was CTRL+click, a file opened from the Package Explorer, a file opened from Tabs, etc.)

IWorkbenchPage page=window.getActivePage();
page.addPartListener(new IPartListener()
{
//...other methods partOpened, partDeactivated, partClosed, partBroughtToTop
public void partActivated(IWorkbenchPart arg0)
{
// notifies if a file was opened
//does not provide the source of the event (CTRL+click, package explorer, opened files in tabs)

}
});

I was wondering if there is any other mechanism (listener) that could notify me when the user presses CTRL+click, such as a listener for actions, a source for where the action was generated or triggered, or anything else. I searched for hyperlinks, editor listener, mouse hover, etc., but nothing worked.

I would really appreciate any information that could help me solve this.

Thank you