001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package org.apache.myfaces.tobago.layout; 021 022 import org.apache.commons.lang.StringUtils; 023 import org.apache.myfaces.tobago.util.LayoutUtil; 024 025 /* 026 * User: lofwyr 027 * Date: 23.01.2008 20:12:30 028 */ 029 public abstract class Measure { 030 031 // todo: refactor and consolidate with LayoutToken 032 033 public static Measure parse(String value) { 034 if (StringUtils.isEmpty(value)) { 035 return new PixelMeasure(0); // fixme: may return a "default measure", or is Pixel the default? 036 } 037 // XXX improve code sharing with LayoutTokens.parse 038 if (LayoutUtil.isNumberAndSuffix(value.toLowerCase(), "px")) { 039 return new PixelMeasure(Integer.parseInt(LayoutUtil.removeSuffix(value, "px"))); 040 } 041 throw new IllegalArgumentException("Can't parse to any measure: '" + value + "'"); 042 } 043 044 public abstract Measure add(Measure m); 045 046 @Deprecated 047 public abstract Measure substractNotNegative(Measure m); 048 049 public abstract Measure subtractNotNegative(Measure m); 050 051 public abstract int getPixel(); 052 }