TreeView with mixed cell types

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  I have a TreeView with classes CellFactory and TreeCell custom, which has been implemented in JavaFX 2.2 and works perfectly. However, after I upgraded to 8 JavaFX. This tree is completely messed up. If I develop a nodes, there will be duplicate tree nodes in the tree. Here is a simplified version of the source code. If not use a method setGraphic() in class TreeCell, it works fine.

  package test;
  
  
  import javafx.application.Application;
  import javafx.scene.Scene;
  import javafx.scene.control.TreeCell;
  import javafx.scene.control.TreeItem;
  import javafx.scene.control.TreeView;
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  If you have a bug in your code: you need

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              public TreeCell call(TreeView param) {
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                              setText(null);
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  You lucky in JavaFX2.2 that the re-use of cell does not seem to affect your bug. improving the effectiveness of the re-use of the cell in JavaFX 8 has exposed the problem.

  Furthermore, it is generally a bit pointless to re - create the nodes each time than updateItem (...) is called (frequently), rather than create them once when the cell is created (much less often). So consider

  tree.setCellFactory(new Callback, TreeCell>() {
  
              public TreeCell call(TreeView param) {
                  return new TreeCell() {
                      private ImageView imageView = new ImageView(image);
                      @Override
                      protected void updateItem(String item, boolean empty) {
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                          if (!empty) {
                              setText(item);
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                          } else {
                              setText(null);
                              setGraphic(null);
                          }
                      }
                  };
              }
          });
  

  Instead

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  A1 
  A2 
  A3 
  A4 
     
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  B2  =RANDBETWEEN(0,5)
  B3  =RANDBETWEEN(0,5)
  B4  =RANDBETWEEN(0,5)
     
  C1  =RANDBETWEEN(0,5)
  C2  =RANDBETWEEN(0,5)
  C3  =RANDBETWEEN(0,5)
  C4  =RANDBETWEEN(0,5)
     
  D1 
  D2 
  D3 
  D4 
     
  E1  =RANDBETWEEN(0,5)
  E2  =RANDBETWEEN(0,5)
  E3  =RANDBETWEEN(0,5)
  E4  =RANDBETWEEN(0,5)
     
  F1 
  F2 
  F3 
  F4 
     
  G1  =SUM(B1:B32)*SUM(E)
  G2  =SUM(C1:C32)*SUM(E)
  G3 
  G4 
  

  * Table is designed with numbers v2.

  Kind regards

  H

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  DBMS_XSLPROCESSOR.clob2file(
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  Wrote file afiedt.buf
  
    1  declare
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    4    --
    5    v_clob    clob;
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