Make COPY_LINE_UP/DOWN and JOIN_LINES commands state dependent

This will (de)activate them accordingly together with the editor.

Author: rubenporras

bundles/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/texteditor/AbstractTextEditor.java

@@ -5976,10 +5976,12 @@ public void setSelection(ISelection selection) {
 		markAsStateDependentAction(ITextEditorActionConstants.DELETE_LINE_TO_END, true);
 		markAsStateDependentAction(ITextEditorActionConstants.MOVE_LINE_UP, true);
 		markAsStateDependentAction(ITextEditorActionConstants.MOVE_LINE_DOWN, true);
+		markAsStateDependentAction(ITextEditorActionConstants.COPY_LINE_UP, true);
+		markAsStateDependentAction(ITextEditorActionConstants.COPY_LINE_DOWN, true);
 		markAsStateDependentAction(ITextEditorActionConstants.CUT_LINE, true);
 		markAsStateDependentAction(ITextEditorActionConstants.CUT_LINE_TO_BEGINNING, true);
 		markAsStateDependentAction(ITextEditorActionConstants.CUT_LINE_TO_END, true);
-
+		markAsStateDependentAction(ITextEditorActionConstants.JOIN_LINES, true);
 		setActionActivationCode(ITextEditorActionConstants.SHIFT_RIGHT_TAB,'\t', -1, SWT.NONE);
 		setActionActivationCode(ITextEditorActionConstants.SHIFT_LEFT, '\t', -1, SWT.SHIFT);
 	}