Use setMessage() instead of setText() for filter text to display as grey

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Author: elsazac

bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/p2/ui/RepositoryManipulationPage.java

@@ -217,7 +217,7 @@ protected Control createContents(Composite parent) {
 		// Filter box
 		pattern = new Text(composite, SWT.SINGLE | SWT.BORDER | SWT.SEARCH | SWT.CANCEL);
 		pattern.getAccessible().addAccessibleListener(AccessibleListener.getNameAdapter(e -> e.result = DEFAULT_FILTER_TEXT));
-		pattern.setText(DEFAULT_FILTER_TEXT);
+		pattern.setMessage(DEFAULT_FILTER_TEXT);
 		pattern.selectAll();
 		pattern.addModifyListener(e -> applyFilter());