| /******************************************************************************* |
| * Copyright (c) 2007 Oracle Corporation. |
| * 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 |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| * |
| ********************************************************************************/ |
| |
| package org.eclipse.jst.jsf.taglibprocessing.attributevalues; |
| |
| /** |
| * Meta-data processing type representing an length attribute value runtime type. |
| * Does not support min and max values from MD. Length must be positive. |
| * that implements IValidValues, IDefaultValue, IValidELValues. |
| */ |
| public class LengthType extends IntegerType { |
| private static final String INVALID_LENGTH = Messages.LengthType_invalid_integer; |
| /** |
| * Type coercion according to JSP 2.0 spec: JSP.1.14.2.1 Conversions from String values |
| * Allows a percentage. |
| * @see org.eclipse.jst.jsf.metadataprocessors.features.IValidValues#isValidValue(java.lang.String) |
| **/ |
| public boolean isValidValue(String value) { |
| //FIXME: this is not right... px, em, etc. are also valid... and spaces between # and units are not |
| //see http://www.w3.org/TR/html401/types.html#h-6.6 |
| if (value == null) return true; |
| String aValue = stripPercentIfPresent(value); |
| try { |
| int anInt = Integer.valueOf(aValue).intValue(); |
| if (anInt < 0) |
| addNewValidationMessage(INVALID_LENGTH); |
| |
| return getValidationMessages().isEmpty(); |
| } catch (NumberFormatException e) { |
| addNewValidationMessage(INVALID_LENGTH); |
| return false; |
| } |
| |
| } |
| //will strip '%' if at end of string. If string is only '%', then will return empty which will be invalid. |
| private String stripPercentIfPresent(String value) { |
| //"%" is allowed at end |
| if (value.length() > 0 |
| && value.lastIndexOf('%') == value.length() - 1) |
| return value.replaceFirst("%",""); //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| return value; |
| } |
| |
| } |