Bug 169696 [Preferences] EncodingFieldEditor.setEnabled(false) has no effect
3.3 M4 Calling EncodingFieldEditor.setEnabled(false, parent) has no effect i.e. the control is still enabled.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/dialogs/AbstractEncodingFieldEditor.java
/*******************************************************************************
 * Copyright (c) 2004, 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.ui.ide.dialogs;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.util.List;
import org.eclipse.jface.preference.FieldEditor;