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1
28 package net.sf.jasperreports.engine.fill;
29
30 import java.io.IOException  ;
31 import java.util.ArrayList ;
32 import java.util.Arrays ;
33 import java.util.List ;
34
35 import net.sf.jasperreports.engine.JRAbstractObjectFactory;
36 import net.sf.jasperreports.engine.JRChild;
37 import net.sf.jasperreports.engine.JRElement;
38 import net.sf.jasperreports.engine.JRElementGroup;
39 import net.sf.jasperreports.engine.xml.JRXmlWriter;
40
41
42
46 public class JRFillElementGroup implements JRElementGroup, JRCloneable
47 {
48
49
50
53 protected List children = new ArrayList ();
54 protected JRElementGroup elementGroup = null;
55
56
59 protected JRFillElement[] elements = null;
60
61
64 private JRElement topElementInGroup = null;
65 private JRElement bottomElementInGroup = null;
66 private int stretchHeightDiff = 0;
67
68
69
72 protected JRFillElementGroup(
73 JRElementGroup elementGrp,
74 JRFillObjectFactory factory
75 )
76 {
77 factory.put(elementGrp, this);
78
79 if (elementGrp != null)
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
94 this.getElements();
95
96 this.elementGroup = factory.getElementGroup(elementGrp.getElementGroup());
97 }
98 }
99
100
101 protected JRFillElementGroup(JRFillElementGroup elementGrp, JRFillCloneFactory factory)
102 {
103 factory.put(elementGrp, this);
104
105 List list = elementGrp.getChildren();
106 if (list != null)
107 {
108 for (int i = 0; i < list.size(); i++)
109 {
110 JRCloneable child = (JRCloneable) list.get(i);
111 JRCloneable clone = child.createClone(factory);
112 children.add(clone);
113 }
114 }
115
116 getElements();
117
118 elementGroup = (JRFillElementGroup) factory.getClone((JRFillElementGroup) elementGrp.getElementGroup());
119 }
120
121
122
125 public List getChildren()
126 {
127 return this.children;
128 }
129
130
131
134 public JRElementGroup getElementGroup()
135 {
136 return this.elementGroup;
137 }
138
139
140
143 public JRElement[] getElements()
144 {
145 if (this.elements == null)
146 {
147 if (this.children != null)
148 {
149 List allElements = new ArrayList ();
150 Object child = null;
151 JRElement[] childElementArray = null;
152 for(int i = 0; i < this.children.size(); i++)
153 {
154 child = this.children.get(i);
155 if (child instanceof JRFillElement)
156 {
157 allElements.add(child);
158 }
159 else if (child instanceof JRFillElementGroup)
160 {
161 childElementArray = ((JRFillElementGroup)child).getElements();
162 if (childElementArray != null)
163 {
164 allElements.addAll( Arrays.asList(childElementArray) );
165 }
166 }
167 }
168
169 this.elements = new JRFillElement[allElements.size()];
170 allElements.toArray(this.elements);
171 }
172 }
173
174 return this.elements;
175 }
176
177
178
181 public JRElement getElementByKey(String key)
182 {
183 return null;
184 }
185
186
187
190 protected void reset()
191 {
192 topElementInGroup = null;
193 }
194
195
196
199 protected int getStretchHeightDiff()
200 {
201 if (topElementInGroup == null)
202 {
203 stretchHeightDiff = 0;
204
205 setTopBottomElements();
206
207 JRElement[] allElements = getElements();
208
209 if (allElements != null && allElements.length > 0)
210 {
211 JRFillElement topElem = null;
212 JRFillElement bottomElem = null;
213
214 for(int i = 0; i < allElements.length; i++)
215 {
216 JRFillElement element = (JRFillElement)allElements[i];
217 if (element.isToPrint())
219 {
220 if (
221 topElem == null ||
222 (topElem != null &&
223 element.getRelativeY() + element.getStretchHeight() <
224 topElem.getRelativeY() + topElem.getStretchHeight())
225 )
226 {
227 topElem = element;
228 }
229
230 if (
231 bottomElem == null ||
232 (bottomElem != null &&
233 element.getRelativeY() + element.getStretchHeight() >
234 bottomElem.getRelativeY() + bottomElem.getStretchHeight())
235 )
236 {
237 bottomElem = element;
238 }
239 }
240 }
241
242 if (topElem != null)
243 {
244 stretchHeightDiff =
245 bottomElem.getRelativeY() + bottomElem.getStretchHeight() - topElem.getRelativeY() -
246 (bottomElementInGroup.getY() + bottomElementInGroup.getHeight() - topElementInGroup.getY());
247 }
248
249 if (stretchHeightDiff < 0)
250 {
251 stretchHeightDiff = 0;
252 }
253 }
254 }
255
256 return stretchHeightDiff;
257 }
258
259
260
263 private void setTopBottomElements()
264 {
265 JRElement[] allElements = getElements();
266
267 if (allElements != null && allElements.length > 0)
268 {
269 for(int i = 0; i < allElements.length; i++)
270 {
271 if (
272 topElementInGroup == null ||
273 (topElementInGroup != null &&
274 allElements[i].getY() + allElements[i].getHeight() <
275 topElementInGroup.getY() + topElementInGroup.getHeight())
276 )
277 {
278 topElementInGroup = allElements[i];
279 }
280
281 if (
282 bottomElementInGroup == null ||
283 (bottomElementInGroup != null &&
284 allElements[i].getY() + allElements[i].getHeight() >
285 bottomElementInGroup.getY() + bottomElementInGroup.getHeight())
286 )
287 {
288 bottomElementInGroup = allElements[i];
289 }
290 }
291 }
292 }
293
294
295
298 public JRChild getCopy(JRAbstractObjectFactory factory)
299 {
300 return factory.getElementGroup(this);
301 }
302
303
304
307 public void writeXml(JRXmlWriter xmlWriter) throws IOException
308 {
309 xmlWriter.writeElementGroup(this);
310 }
311
312
313 public JRCloneable createClone(JRFillCloneFactory factory)
314 {
315 return new JRFillElementGroup(this, factory);
316 }
317 }
318 |
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