001 /** 002 * =========================================== 003 * LibLayout : a free Java layouting library 004 * =========================================== 005 * 006 * Project Info: http://reporting.pentaho.org/liblayout/ 007 * 008 * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors. 009 * 010 * This library is free software; you can redistribute it and/or modify it under the terms 011 * of the GNU Lesser General Public License as published by the Free Software Foundation; 012 * either version 2.1 of the License, or (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 016 * See the GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public License along with this 019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 020 * Boston, MA 02111-1307, USA. 021 * 022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 023 * in the United States and other countries.] 024 * 025 * ------------ 026 * $Id: DocumentContextUtility.java 3524 2007-10-16 11:26:31Z tmorgner $ 027 * ------------ 028 * (C) Copyright 2006-2007, by Pentaho Corporation. 029 */ 030 package org.jfree.layouting; 031 032 import java.util.Date; 033 034 import org.jfree.layouting.layouter.context.DocumentContext; 035 import org.jfree.layouting.layouter.context.LayoutStyle; 036 import org.jfree.layouting.layouter.i18n.DefaultLocalizationContext; 037 import org.jfree.layouting.layouter.i18n.LocalizationContext; 038 import org.jfree.layouting.layouter.style.resolver.SimpleStyleRuleMatcher; 039 import org.jfree.layouting.layouter.style.resolver.StyleRuleMatcher; 040 import org.jfree.resourceloader.ResourceKey; 041 import org.jfree.resourceloader.ResourceManager; 042 043 /** 044 * Creation-Date: 13.04.2006, 12:11:20 045 * 046 * @author Thomas Morgner 047 */ 048 public class DocumentContextUtility 049 { 050 private DocumentContextUtility() 051 { 052 } 053 054 055 public static ResourceKey getBaseResource(final DocumentContext context) 056 { 057 final Object o = context.getMetaAttribute 058 (DocumentContext.BASE_RESOURCE_ATTR); 059 if (o instanceof ResourceKey == false) 060 { 061 return null; 062 } 063 return (ResourceKey) o; 064 } 065 066 public static LocalizationContext getLocalizationContext(final DocumentContext context) 067 { 068 final Object o = context.getMetaAttribute 069 (DocumentContext.LOCALIZATION_ATTR); 070 if (o instanceof LocalizationContext == false) 071 { 072 final DefaultLocalizationContext value = new DefaultLocalizationContext(); 073 context.setMetaAttribute(DocumentContext.LOCALIZATION_ATTR, value); 074 return value; 075 } 076 return (LocalizationContext) o; 077 } 078 079 public static ResourceManager getResourceManager(final DocumentContext context) 080 { 081 final Object o = context.getMetaAttribute(DocumentContext.RESOURCE_MANAGER_ATTR); 082 if (o instanceof ResourceManager == false) 083 { 084 final ResourceManager value = new ResourceManager(); 085 value.registerDefaults(); 086 context.setMetaAttribute(DocumentContext.RESOURCE_MANAGER_ATTR, value); 087 return value; 088 } 089 return (ResourceManager) o; 090 } 091 092 public static Date getDate(final DocumentContext context) 093 { 094 final Object o = context.getMetaAttribute(DocumentContext.DATE_ATTR); 095 if (o instanceof Date == false) 096 { 097 final Date value = new Date(); 098 context.setMetaAttribute(DocumentContext.DATE_ATTR, value); 099 return value; 100 } 101 return (Date) o; 102 } 103 104 public static StyleRuleMatcher getStyleRuleMatcher(final DocumentContext context) 105 { 106 final Object o = context.getMetaAttribute(DocumentContext.STYLE_MATCHER_ATTR); 107 if (o instanceof StyleRuleMatcher == false) 108 { 109 final StyleRuleMatcher value = new SimpleStyleRuleMatcher(); 110 context.setMetaAttribute(DocumentContext.STYLE_MATCHER_ATTR, value); 111 return value; 112 } 113 return (StyleRuleMatcher) o; 114 } 115 116 public static LayoutStyle getInitialStyle(final DocumentContext context) 117 { 118 final Object o = context.getMetaAttribute(DocumentContext.INITIAL_STYLE); 119 if (o instanceof LayoutStyle == false) 120 { 121 throw new IllegalStateException(); 122 } 123 return (LayoutStyle) o; 124 } 125 126 }