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1
30 package com.genimen.djeneric.web.renderers.tree;
31
32 import java.util.HashMap  ;
33
34 import org.w3c.dom.DOMException ;
35 import org.w3c.dom.Document ;
36 import org.w3c.dom.Element ;
37
38 import com.genimen.djeneric.language.Messages;
39 import com.genimen.djeneric.repository.DjObject;
40 import com.genimen.djeneric.repository.DjSession;
41 import com.genimen.djeneric.repository.exceptions.DjenericException;
42 import com.genimen.djeneric.repository.exceptions.NotPersistedException;
43 import com.genimen.djeneric.repository.exceptions.ObjectNotDefinedException;
44 import com.genimen.djeneric.structure.ExtentUsage;
45 import com.genimen.djeneric.structure.RelationUsage;
46 import com.genimen.djeneric.tools.specifier.interfaces.DjenericObjectContainer;
47
48 public class WebNode extends AbstractWebNode implements DjenericObjectContainer
49 {
50 DjObject _obj;
51 boolean _deleted = false;
52
53 public WebNode(DjSession session)
54 {
55 super(session);
56 }
57
58 public DjObject getObject()
59 {
60 return _obj;
61 }
62
63 public void setObject(DjObject obj)
64 {
65 _obj = obj;
66 }
67
68 public String toString()
69 {
70 if (_deleted) return Messages.getString("global.Deleted");
71 if (_obj == null) return "null";
72 if (_obj.isMarkedForDelete()) return Messages.getString("global.Deleted");
73 return _obj.getDescriptor(getExtentUsage().getDescriptorExpression());
74 }
75
76 public boolean notInTreeAnymore()
77 {
78 return getParent() == null;
79 }
80
81 public void reload() throws DjenericException
82 {
83 _alreadyLoaded = false;
84 try
85 {
86 getObject().reload();
87 }
88 catch (NotPersistedException npe)
89 {
90 _deleted = true;
91 removeAllChildren();
92 }
93 setExpanded(true);
94 }
95
96 public void load() throws DjenericException
97 {
98 if (_alreadyLoaded) return;
99
100 ExtentUsage taus = getExtentUsage();
101 if (taus != null)
102 {
103 removeAllChildren();
104
105 for (int i = 0; i < taus.getDetailRelationCount(); i++)
106 {
107 RelationUsage usage = taus.getDetailRelation(i);
108 String className = usage.getDetail().getCustomNodeClass();
109
110 WebFolder folder = new WebFolder(getSession());
111
112 folder.setVia(usage);
113 insertAsChild(folder);
114 }
115 }
116 _alreadyLoaded = true;
117 }
118
119 public void delete() throws DjenericException
120 {
121 getObject().markForDelete();
122 getSession().commit();
123 AbstractWebNode parent = getParent();
124 if (parent != null) parent.removeChild(this);
125 }
126
127 public boolean canCopy() throws DjenericException
128 {
129 return canEdit() && canCreate() && getExtentUsage().getEditorTarget() == null;
130 }
131
132 public boolean canExport()
133 {
134 return getExtentUsage() != null && getExtentUsage().getEditor() != null;
135 }
136
137 protected void collectParameters(HashMap parentIds)
138 {
139 if (getObject() != null && !parentIds.containsKey(getExtentUsage().getId()))
140 {
141 parentIds.put(getExtentUsage().getId(), getObject());
142 }
143 super.collectParameters(parentIds);
144 }
145
146 public Element asXml(Document doc) throws DOMException , DjenericException
147 {
148 Element node = doc.createElement("node");
149
150 node.setAttribute("title", toString());
151 node.setAttribute("nodeid", String.valueOf(getPath()));
152 node.setAttribute("expandable", String.valueOf(isExpandable()));
153 node.setAttribute("expanded", String.valueOf(isExpanded()));
154 node.setAttribute("canedit", String.valueOf(canEdit()));
155 node.setAttribute("candelete", String.valueOf(canDelete()));
156 node.setAttribute("cancreate", String.valueOf(canCreate()));
157 node.setAttribute("canfilter", String.valueOf(canFilter()));
158 node.setAttribute("cancopy", String.valueOf(canCopy()));
159 node.setAttribute("canexport", String.valueOf(canExport()));
160 node.setAttribute("canimport", String.valueOf(getSession().canModify() && getSession().canCreate()));
161
162 if (getExtentUsage() != null && getExtentUsage().getImageIconResource() != null)
163 {
164 node.setAttribute("image", getExtentUsage().getImageIconResource().getAbsolutePath());
165 }
166 if (isExpanded())
167 {
168 for (int i = 0; i < getChildCount(); i++)
169 {
170 node.appendChild(getChildAt(i).asXml(doc));
171 }
172 }
173
174 return node;
175 }
176
177 public void setExpanded(boolean expand) throws DjenericException
178 {
179 if (expand && !_alreadyLoaded)
180 {
181 load();
182 }
183 _expanded = expand;
184 }
185
186 public boolean isExpandable()
187 {
188 return (_alreadyLoaded && getChildCount() > 0) || getExtentUsage().getDetailRelationCount() > 0;
189 }
190
191 public DjObject getTargetObject() throws ObjectNotDefinedException, DjenericException
192 {
193 String editorTarget = getExtentUsage().getEditorTarget();
194 DjObject obj = getObject();
195
196 if (editorTarget != null)
197 {
198 obj = (DjObject) obj.get(editorTarget);
199 }
200 return obj;
201 }
202
203 } |
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