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Getting the cursor position in the current editor [message #518241]

Wed, 03 March 2010 10:17

Eclipse User

Hi ,

I am making some application in Java in which I have to get the cursor position or a mouseclick position in the current active editor... I created a very small code to start with

public class MouseTest {

public static void main(String[] args) {

System.out.println(PlatformUI.isWorkbenchRunning());
IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActi vePage().getActiveEditor();
if (editor instanceof ITextEditor) {
ISelectionProvider selectionProvider = ((ITextEditor)editor).getSelectionProvider();
ISelection selection = selectionProvider.getSelection();
if (selection instanceof ITextSelection) {
ITextSelection textSelection = (ITextSelection)selection;
int offset = textSelection.getOffset(); // etc.
}
}
System.out.println( "hi --");
}
}

But when I run this application I get an error
Exception in thread "main" java.lang.IllegalStateException: Workbench has not been created yet.

Re: Getting the cursor position in the current editor [message #518543 is a reply to message #518241]

Thu, 04 March 2010 07:38

Eclipse User

sameer wrote on Wed, 03 March 2010 10:17

But when I run this application I get an error
Exception in thread "main" java.lang.IllegalStateException: Workbench has not been created yet.

Sameer, as the error implies, the workbench is not up. Generally speaking, you cannot refer to random Eclipse APIs in the context of a generic Java application. All you have is a main method. You need to be running from an OSGi. Instead of writing a regular Java application with a main method, you should be creating plug-ins that contribute functionality instead.

Re: Getting the cursor position in the current editor [message #518885 is a reply to message #518543]

Fri, 05 March 2010 06:25

Eclipse User

hey thanx ... I was not getting it earlier .... I was making a java application ..
I made it as a plug in and then was able to run it successfully ...

Re: Getting the cursor position in the current editor [message #519453 is a reply to message #518885]

Mon, 08 March 2010 16:01

Eclipse User

Hi,
I need to do the same thing (get the current line and columnnumber).
With textSelection.getStartLine (plus 1) I get the current line.
How about the current column where the cursor is ? I mean textSelection.getOffset returns the offset, where a tab is one position, as on the screen a tab is more then one position.

Is there a way to prevent Tab-characters in the editor-text (when the user presses the Tab-button that it is converted to the right number of spaces) ?

Re: Getting the cursor position in the current editor [message #527458 is a reply to message #519453]

Thu, 15 April 2010 06:55

Eclipse User

Hello Kitesurfer

I make a editor too and i dont know to gets of columnos number

have you make this??

Thanks a lot

Jose

[Updated on: Thu, 15 April 2010 06:55] by Moderator

Re: Getting the cursor position in the current editor [message #527817 is a reply to message #527458]

Fri, 16 April 2010 11:03

Eclipse User

With this code you can the current linenumber and offset (offset is offset in the whole editortext) :
lcSelectionProvider = ((ITextEditor)lcEditor).getSelectionProvider();
selection = lcSelectionProvider.getSelection();
if (selection instanceof ITextSelection) {
textSelection = (ITextSelection)selection;
offSet = textSelection.getOffset(); // etc.
lineNr = textSelection.getStartLine();
}

You can get the number of spaces for each tab-char in file : \WORKSPACE Java\.settings\org.eclipse.ui.editors.prefs
Lines:
spacesForTabs=true
tabWidth=13 (when it's not there its value is 4)

So with this info you can do it all.

PS. It would have been handier if they added a getColumn method to ITextSelection.

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