Examples of javax.swing.undo.UndoManager.canUndo()

javax.swing.undo.UndoManager.canUndo()


    am.put("Undo", new AbstractAction() {
      @Override
      public void actionPerformed(ActionEvent e) {
        try {
          if (undoManager.canUndo()) {
            undoManager.undo();
          }
        } catch (CannotUndoException exp) {
          exp.printStackTrace();
        }

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        final Action undoAction = new AbstractAction(UIMessages.instance.getString("GenericUndoName")) { //$NON-NLS-1$
            private static final long serialVersionUID = -2135822508998640523L;


                public void actionPerformed(ActionEvent e) {
                    try {
                        if (undoManager.canUndo()) {
                            undoManager.undo();
                        }
                    }
                    catch (CannotUndoException ex) {
                    }

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          undo = ((WoPeDUndoManager) undoManager).canUndo(am.getUi()
              .getEditorFocus().getModelProcessor()
              .getElementContainer());  
      
        else
        undo = undoManager.canUndo();
        redo = undoManager.canRedo();
      }
    }
    
    setStatus(CAN_UNDO, undo);

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            redoButton.setEnabled(false);
            redoMenu.setEnabled(false);
            redoButton.setToolTipText(GT.get("No redo possible"));
        }


        if (undoManager.canUndo()) {
            undoButton.setEnabled(true);
            undoMenu.setEnabled(true);
            undoButton.setToolTipText(GT.get("Undo")+": "+undoManager.getUndoPresentationName());
        } else {
            undoButton.setEnabled(false);

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