Bug 65031 [Preferences] Local History preference page doesn't use dialog font
RC1 see attached screen shot
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/FileStatesPage.java
private long validateLongTextEntry(Text text) {
		long value;
		try {
			value = Long.parseLong(text.getText());
		} catch (NumberFormatException exception) {
			setErrorMessage(
				MessageFormat.format(
					INVALID_VALUE_MESSAGE,
					new Object[] { exception.getLocalizedMessage()}));
			return FAILED_VALUE;
		}
		
		if (value <= 0) {
			setErrorMessage(POSITIVE_MESSAGE);
			return FAILED_VALUE;
		}
		return value;
	}
	/**
	 * Validate the maximum file states.
	 * Return the value if successful, otherwise
	 * return FAILED_VALUE.
	 * Set the error message if it fails.
	 * @return int
	 */
	private int validateMaxFileStates() {
		int maxFileStates = validateIntegerTextEntry(this.maxStatesText);
		if (maxFileStates == FAILED_VALUE)
			return maxFileStates;
		if (maxFileStates > FILE_STATES_MAXIMUM) {