first commit

hrmsEjb/net/sf/jasperreports/engine/fill/JRFillElementGroup.java

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+package net.sf.jasperreports.engine.fill;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import net.sf.jasperreports.engine.JRChild;
+import net.sf.jasperreports.engine.JRElement;
+import net.sf.jasperreports.engine.JRElementGroup;
+import net.sf.jasperreports.engine.JRVisitable;
+import net.sf.jasperreports.engine.JRVisitor;
+
+public class JRFillElementGroup implements JRElementGroup, JRFillCloneable {
+  protected List children = new ArrayList();
+  
+  protected JRElementGroup elementGroup = null;
+  
+  protected JRFillElement[] elements = null;
+  
+  private JRElement topElementInGroup = null;
+  
+  private JRElement bottomElementInGroup = null;
+  
+  private int stretchHeightDiff = 0;
+  
+  protected JRFillElementGroup(JRElementGroup elementGrp, JRFillObjectFactory factory) {
+    factory.put(elementGrp, this);
+    if (elementGrp != null) {
+      List list = elementGrp.getChildren();
+      if (list != null && list.size() > 0)
+        for (int i = 0; i < list.size(); i++) {
+          JRChild child = list.get(i);
+          child = (JRChild)factory.getVisitResult((JRVisitable)child);
+          this.children.add(child);
+        }  
+      getElements();
+      this.elementGroup = (JRElementGroup)factory.getVisitResult((JRVisitable)elementGrp.getElementGroup());
+    } 
+  }
+  
+  protected JRFillElementGroup(JRFillElementGroup elementGrp, JRFillCloneFactory factory) {
+    factory.put(elementGrp, this);
+    List list = elementGrp.getChildren();
+    if (list != null)
+      for (int i = 0; i < list.size(); i++) {
+        JRFillCloneable child = list.get(i);
+        JRFillCloneable clone = child.createClone(factory);
+        this.children.add(clone);
+      }  
+    getElements();
+    this.elementGroup = (JRFillElementGroup)factory.getClone((JRFillElementGroup)elementGrp.getElementGroup());
+  }
+  
+  public List getChildren() {
+    return this.children;
+  }
+  
+  public JRElementGroup getElementGroup() {
+    return this.elementGroup;
+  }
+  
+  public JRElement[] getElements() {
+    if (this.elements == null)
+      if (this.children != null) {
+        List allElements = new ArrayList();
+        Object child = null;
+        JRElement[] childElementArray = null;
+        for (int i = 0; i < this.children.size(); i++) {
+          child = this.children.get(i);
+          if (child instanceof JRFillElement) {
+            allElements.add(child);
+          } else if (child instanceof JRFillElementGroup) {
+            childElementArray = ((JRFillElementGroup)child).getElements();
+            if (childElementArray != null)
+              allElements.addAll(Arrays.asList((Object[])childElementArray)); 
+          } 
+        } 
+        this.elements = new JRFillElement[allElements.size()];
+        allElements.toArray(this.elements);
+      }  
+    return (JRElement[])this.elements;
+  }
+  
+  public JRElement getElementByKey(String key) {
+    return null;
+  }
+  
+  protected void reset() {
+    this.topElementInGroup = null;
+  }
+  
+  protected int getStretchHeightDiff() {
+    if (this.topElementInGroup == null) {
+      this.stretchHeightDiff = 0;
+      setTopBottomElements();
+      JRElement[] allElements = getElements();
+      if (allElements != null && allElements.length > 0) {
+        JRFillElement topElem = null;
+        JRFillElement bottomElem = null;
+        for (int i = 0; i < allElements.length; i++) {
+          JRFillElement element = (JRFillElement)allElements[i];
+          if (element.isToPrint()) {
+            if (topElem == null || (topElem != null && element.getRelativeY() + element.getStretchHeight() < topElem.getRelativeY() + topElem.getStretchHeight()))
+              topElem = element; 
+            if (bottomElem == null || (bottomElem != null && element.getRelativeY() + element.getStretchHeight() > bottomElem.getRelativeY() + bottomElem.getStretchHeight()))
+              bottomElem = element; 
+          } 
+        } 
+        if (topElem != null)
+          this.stretchHeightDiff = bottomElem.getRelativeY() + bottomElem.getStretchHeight() - topElem.getRelativeY() - this.bottomElementInGroup.getY() + this.bottomElementInGroup.getHeight() - this.topElementInGroup.getY(); 
+        if (this.stretchHeightDiff < 0)
+          this.stretchHeightDiff = 0; 
+      } 
+    } 
+    return this.stretchHeightDiff;
+  }
+  
+  private void setTopBottomElements() {
+    JRElement[] allElements = getElements();
+    if (allElements != null && allElements.length > 0)
+      for (int i = 0; i < allElements.length; i++) {
+        if (this.topElementInGroup == null || (this.topElementInGroup != null && allElements[i].getY() + allElements[i].getHeight() < this.topElementInGroup.getY() + this.topElementInGroup.getHeight()))
+          this.topElementInGroup = allElements[i]; 
+        if (this.bottomElementInGroup == null || (this.bottomElementInGroup != null && allElements[i].getY() + allElements[i].getHeight() > this.bottomElementInGroup.getY() + this.bottomElementInGroup.getHeight()))
+          this.bottomElementInGroup = allElements[i]; 
+      }  
+  }
+  
+  public void visit(JRVisitor visitor) {
+    visitor.visitElementGroup(this);
+  }
+  
+  public JRFillCloneable createClone(JRFillCloneFactory factory) {
+    return new JRFillElementGroup(this, factory);
+  }
+  
+  public Object clone() {
+    return null;
+  }
+  
+  public Object clone(JRElementGroup parentGroup) {
+    return null;
+  }
+}