Bug 74708 [Encoding] IDEEncodingPreferencePage does not disable OK when invalid encoding is entered
20040921-2000 If you enter an invalid encoding in the IDEEncodingsPreferencePage you will still be able to select OK STEPS 1) Open the Editors preference page 2) Type ffff 3) You are warned but OK is still enabled.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceInfoPage.java
private static String LINKED_FILE_LABEL = IDEWorkbenchMessages
			.getString("ResourceInfo.linkedFile"); 
	private static String LINKED_FOLDER_LABEL = IDEWorkbenchMessages
			.getString("ResourceInfo.linkedFolder"); 
	private static String UNKNOWN_LABEL = IDEWorkbenchMessages
			.getString("ResourceInfo.unknown"); 
	private static String NOT_LOCAL_TEXT = IDEWorkbenchMessages
			.getString("ResourceInfo.notLocal"); 
	private static String MISSING_PATH_VARIABLE_TEXT = IDEWorkbenchMessages
			.getString("ResourceInfo.undefinedPathVariable"); 
	private static String NOT_EXIST_TEXT = IDEWorkbenchMessages
			.getString("ResourceInfo.notExist"); 
	private static String PATH_TITLE = IDEWorkbenchMessages
			.getString("ResourceInfo.path"); 
	private static String TIMESTAMP_TITLE = IDEWorkbenchMessages
			.getString("ResourceInfo.lastModified"); 
	private static String FILE_NOT_EXIST_TEXT = IDEWorkbenchMessages
			.getString("ResourceInfo.fileNotExist"); 
	private static String FILE_ENCODING_TITLE = IDEWorkbenchMessages
			.getString("WorkbenchPreference.encoding"); 
	private static String CONTAINER_ENCODING_TITLE = IDEWorkbenchMessages
			.getString("ResourceInfo.fileEncodingTitle"); 
	private static String FILE_CONTENT_ENCODING_FORMAT = IDEWorkbenchMessages
			.getString("ResourceInfo.fileContentEncodingFormat"); 
	private static String FILE_CONTAINER_ENCODING_FORMAT = IDEWorkbenchMessages
			.getString("ResourceInfo.fileContainerEncodingFormat"); 
	private static String CONTAINER_ENCODING_FORMAT = IDEWorkbenchMessages
			.getString("ResourceInfo.containerEncodingFormat"); 
	
	private static final int MAX_VALUE_WIDTH = 80;