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25 package org.ofbiz.webapp.region;
26
27 import java.net.URL  ;
28 import java.util.HashMap ;
29 import java.util.Iterator ;
30 import java.util.List ;
31 import java.util.Map ;
32
33 import org.ofbiz.base.util.Debug;
34 import org.ofbiz.base.util.UtilValidate;
35 import org.ofbiz.base.util.UtilXml;
36 import org.ofbiz.base.util.cache.UtilCache;
37
38 import org.w3c.dom.Document ;
39 import org.w3c.dom.Element ;
40
41
48 public class RegionManager {
49
50 public static final String module = RegionManager.class.getName();
51
52 protected static UtilCache regionCache = new UtilCache("webapp.Regions.Config", 0, 0);
53
54 protected URL regionFile = null;
55
56 public RegionManager(URL regionFile) {
57 this.regionFile = regionFile;
58 if (regionFile == null) throw new IllegalArgumentException ("regionFile cannot be null");
59
60 regionCache.put(regionFile, readRegionXml(regionFile));
63 }
64
65 public Map getRegions() {
66 Map regions = (Map ) regionCache.get(regionFile);
67 if (regions == null) {
68 synchronized (this) {
69 regions = (Map ) regionCache.get(regionFile);
70 if (regions == null) {
71 if (Debug.verboseOn()) Debug.logVerbose("Regions not loaded for " + regionFile + ", loading now", module);
72 regions = readRegionXml(regionFile);
73 regionCache.put(regionFile, regions);
74 }
75 }
76 }
77 return regions;
78 }
79
80 public Region getRegion(String regionName) {
81 if (regionFile == null) return null;
82 return (Region) getRegions().get(regionName);
83 }
84
85 public void putRegion(Region region) {
86 getRegions().put(region.getId(), region);
87 }
88
89 public Map readRegionXml(URL regionFile) {
90 Map regions = new HashMap ();
91
92 Document document = null;
93
94 try {
95 document = UtilXml.readXmlDocument(regionFile, true);
96 } catch (java.io.IOException e) {
97 Debug.logError(e, module);
98 } catch (org.xml.sax.SAXException e) {
99 Debug.logError(e, module);
100 } catch (javax.xml.parsers.ParserConfigurationException e) {
101 Debug.logError(e, module);
102 }
103
104 if (document == null) return regions;
105
106 Element rootElement = document.getDocumentElement();
107
108 List defineElements = UtilXml.childElementList(rootElement, "define");
109 Iterator defineIter = defineElements.iterator();
110
111 while (defineIter.hasNext()) {
112 Element defineElement = (Element ) defineIter.next();
113
114 addRegion(defineElement, regions);
115 }
116
117 return regions;
118 }
119
120 protected void addRegion(Element defineElement, Map regions) {
121 Region newRegion = null;
122
123 String idAttr = defineElement.getAttribute("id");
124 String templateAttr = defineElement.getAttribute("template");
125 String regionAttr = defineElement.getAttribute("region");
126
127 if (UtilValidate.isNotEmpty(templateAttr) && UtilValidate.isNotEmpty(regionAttr)) {
128 throw new IllegalArgumentException ("Cannot use both template and region attributes");
129 }
130
131 if (UtilValidate.isNotEmpty(templateAttr)) {
132 newRegion = new Region(idAttr, templateAttr, null);
133 } else {
134 if (UtilValidate.isNotEmpty(regionAttr)) {
135 Region parentRegion = (Region) regions.get(regionAttr);
136
137 if (parentRegion == null) {
138 throw new IllegalArgumentException ("can't find page definition attribute with this key: " + regionAttr);
139 }
140 newRegion = new Region(idAttr, parentRegion.getContent(), parentRegion.getSections());
141 } else {
142 throw new IllegalArgumentException ("Must specify either the template or the region attribute");
143 }
144 }
145
146 regions.put(idAttr, newRegion);
147
148 List putElements = UtilXml.childElementList(defineElement, "put");
149 Iterator putIter = putElements.iterator();
150
151 while (putIter.hasNext()) {
152 Element putElement = (Element ) putIter.next();
153
154 newRegion.put(makeSection(putElement));
155 }
156 }
157
158 protected Section makeSection(Element putElement) {
159 String bodyContent = UtilXml.elementValue(putElement);
160 String section = putElement.getAttribute("section");
161 String info = putElement.getAttribute("info");
162 String content = putElement.getAttribute("content");
163 String type = putElement.getAttribute("type");
164
165 if (UtilValidate.isEmpty(type)) type = "default";
166
167 if (UtilValidate.isNotEmpty(bodyContent) && UtilValidate.isNotEmpty(content)) {
168 throw new IllegalArgumentException ("Cannot use both content attribute and tag body text");
169 }
170
171 if (UtilValidate.isNotEmpty(bodyContent)) {
172 content = bodyContent;
173 type = "direct";
174 }
175
176 return new Section(section, info, content, type, this);
177 }
178
179 public static Region getRegion(URL regionFile, String regionName) {
180 if (regionFile == null) return null;
181 Map regions = (Map ) regionCache.get(regionFile);
182 if (regions == null) return null;
183 return (Region) regions.get(regionName);
184 }
185 }
186 |
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