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