|
1
28 package net.sf.jasperreports.engine.base;
29
30 import java.io.IOException  ;
31 import java.io.Serializable ;
32 import java.util.ArrayList ;
33 import java.util.Arrays ;
34 import java.util.List ;
35
36 import net.sf.jasperreports.crosstabs.JRCrosstab;
37 import net.sf.jasperreports.engine.JRAbstractObjectFactory;
38 import net.sf.jasperreports.engine.JRChild;
39 import net.sf.jasperreports.engine.JRConstants;
40 import net.sf.jasperreports.engine.JRElement;
41 import net.sf.jasperreports.engine.JRElementGroup;
42 import net.sf.jasperreports.engine.JRFrame;
43 import net.sf.jasperreports.engine.xml.JRXmlWriter;
44
45
46
50 public class JRBaseElementGroup implements JRElementGroup, Serializable
51 {
52
53
54
57 private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
58
59
62 protected List children = new ArrayList ();
63 protected JRElementGroup elementGroup = null;
64
65
66
69 protected JRBaseElementGroup()
70 {
71 }
72
73
74
77 protected JRBaseElementGroup(JRElementGroup elementGrp, JRBaseObjectFactory factory)
78 {
79 factory.put(elementGrp, this);
80
81
82 List list = elementGrp.getChildren();
83 if (list != null && list.size() > 0)
84 {
85 for(int i = 0; i < list.size(); i++)
86 {
87 JRChild child = (JRChild)list.get(i);
88 child = child.getCopy(factory);
89 children.add(child);
90 }
91 }
92
93 this.elementGroup = factory.getElementGroup(elementGrp.getElementGroup());
94 }
95
96
97
100 public List getChildren()
101 {
102 return this.children;
103 }
104
105
106
109 public JRElementGroup getElementGroup()
110 {
111 return this.elementGroup;
112 }
113
114
115
118 public static JRElement[] getElements(List children)
119 {
120 JRElement[] elements = null;
121
122 if (children != null)
123 {
124 List allElements = new ArrayList ();
125 Object child = null;
126 JRElement[] childElementArray = null;
127 for(int i = 0; i < children.size(); i++)
128 {
129 child = children.get(i);
130 if (child instanceof JRElement)
131 {
132 allElements.add(child);
133 }
134 else if (child instanceof JRElementGroup)
135 {
136 childElementArray = ((JRElementGroup)child).getElements();
137 if (childElementArray != null)
138 {
139 allElements.addAll( Arrays.asList(childElementArray) );
140 }
141 }
142 }
143
144 elements = new JRElement[allElements.size()];
145 allElements.toArray(elements);
146 }
147
148 return elements;
149 }
150
151
152 public JRElement[] getElements()
153 {
154 return getElements(children);
155 }
156
157
158
161 public static JRElement getElementByKey(JRElement[] elements, String key)
162 {
163 JRElement element = null;
164
165 if (key != null)
166 {
167 if (elements != null)
168 {
169 int i = 0;
170 while (element == null && i < elements.length)
171 {
172 JRElement elem = elements[i];
173 if (key.equals(elem.getKey()))
174 {
175 element = elem;
176 }
177 else if (elem instanceof JRFrame)
178 {
179 element = ((JRFrame) elem).getElementByKey(key);
180 }
181 else if (elem instanceof JRCrosstab)
182 {
183 element = ((JRCrosstab) elem).getElementByKey(key);
184 }
185 i++;
186 }
187 }
188 }
189
190 return element;
191 }
192
193
194 public JRElement getElementByKey(String key)
195 {
196 return getElementByKey(getElements(), key);
197 }
198
199
200
203 public JRChild getCopy(JRAbstractObjectFactory factory)
204 {
205 return factory.getElementGroup(this);
206 }
207
208
209
212 public void writeXml(JRXmlWriter xmlWriter) throws IOException
213 {
214 xmlWriter.writeElementGroup(this);
215 }
216
217
218 }
219 |
Popular Tags |
Java API By Example, From Geeks To Geeks.