如何獲取Eclipse中的光標列位置TextEditor

Question

我想開發一個eclipse插件，需要根據光標在texteditor中的位置進行一些操作。 看起來很容易得到光標的行位置，請參閱： How to get cursor position in an eclipse TextEditor

但是如何獲取列位置？

Answer 1

下面的代碼似乎工作：

package plugin_test.handlers; 

import org.eclipse.core.commands.AbstractHandler; 
import org.eclipse.core.commands.ExecutionEvent; 
import org.eclipse.core.commands.ExecutionException; 
import org.eclipse.jface.dialogs.MessageDialog; 
import org.eclipse.jface.text.BadLocationException; 
import org.eclipse.jface.text.IDocument; 
import org.eclipse.jface.text.ITextSelection; 
import org.eclipse.jface.viewers.ISelection; 
import org.eclipse.jface.viewers.ISelectionProvider; 
import org.eclipse.ui.IEditorPart; 
import org.eclipse.ui.IWorkbench; 
import org.eclipse.ui.IWorkbenchPage; 
import org.eclipse.ui.IWorkbenchWindow; 
import org.eclipse.ui.PlatformUI; 
import org.eclipse.ui.texteditor.IDocumentProvider; 
import org.eclipse.ui.texteditor.ITextEditor; 


/** 
* Our sample handler extends AbstractHandler, an IHandler base class. 
* @see org.eclipse.core.commands.IHandler 
* @see org.eclipse.core.commands.AbstractHandler 
*/ 
public class SampleHandler extends AbstractHandler { 
    /** 
    * The constructor. 
    */ 
    public SampleHandler() { 
    } 

    /** 
    * the command has been executed, so extract extract the needed information 
    * from the application context. 
    */ 
    public Object execute(ExecutionEvent event) throws ExecutionException { 
     IWorkbench wb = PlatformUI.getWorkbench(); 
     IWorkbenchWindow win = wb.getActiveWorkbenchWindow(); 
     IWorkbenchPage page = win.getActivePage(); 
     IEditorPart editor = page.getActiveEditor(); 
     if(editor instanceof ITextEditor){ 
      ISelectionProvider selectionProvider = ((ITextEditor)editor).getSelectionProvider(); 
      ISelection selection = selectionProvider.getSelection(); 
      if (selection instanceof ITextSelection) { 
       ITextSelection textSelection = (ITextSelection)selection; 
       IDocumentProvider provider = ((ITextEditor)editor).getDocumentProvider(); 
       IDocument document = provider.getDocument(editor.getEditorInput()); 
       int line = textSelection.getStartLine(); 
       int column =0; 
       try { 
        column = textSelection.getOffset() - document.getLineOffset(line); 
       } catch (BadLocationException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 

       MessageDialog.openInformation(
         win.getShell(), 
         "Plugin_test", 
         "line:"+(line+1) + 
         " column:"+ (column+1)); 
      } 
     } 



     return null; 
    } 
}