a) set the first column to be uneditable in jtable.
/ ** Table Model of the table. * /
Final DefaultTableModel Datamodel = New DefaultTableModel
New Object [] [] {{1, "=", "}},
New string [] {"criterion ID", "Operation Name", "Value"}
) {
// set col 0 to unloadITable.
Public Boolean IscelleDitable (int Row, Int col) {
IF (col! = 0) {
Return True;
} else {
Return False;
}
}
b) Implement TreeView by Use JButton / Graphics2D / Line2D.double.
Fig1. The picture of tre.
1) CREATE CLASS Node Which Contain these Variable and methods.
Node ParentNode;
Node rootnode;
List
Int Layer, Level;
Line2D.double line;
Public void addchild (node childnode);
Public void setPrentlevel ()
2) Implement the addchild & setparentlevel method.
Public void addchild (node childnode) {
// make Sure the child node is not exist.
// set the layer of child node to be layer of parent plus 1.
// set the level of child node to be the number of child node in this layer currently.
// if the child node is leaf node, The set the level of perent node recursively.
}
Public void setparentLevel () {
// Make Sure the Parent is not null
// set the level of pent to be the mid-level of all the children totally.
// Call setParentLevel of this Parent Node. Recursive Call.
}
c) Implement add / del row in jtable.
// Handler "New criterion" Event.
Buttonnewcriterion.AddActionListener (new activityListener () {
Public Void ActionPerformed (ActionEvent E) {
IndexOfcrienterion ;
DataModel.inSertrow (TableView.Getrowcount (), new object [] {new jbutton ("="), "=", "});
TableView.selectrowSelectionInterval (TableView.Getrowcount () - 1, TableView.GetrowCount () - 1);
});
// Handler "new condition" Event.
Buttonnewcondition.AddActionListener (New ActionListener () {
Public Void ActionPerformed (ActionEvent E) {
Int selectedrow = TableView.getSelectedRow ();
Integer criterionIndex = (Integer) (SELECTEDROW, 0));
DataModel.inSertrow (SELECTEDROW 1, New Object [] {criterionIndex, "=", "});
TableView.setrowSelectionInterval (SELECTEDROW 1);
}
});
// Handler "delete conputing" event.
ButtOndelcondition.AddActionListener (new activityListener () {
Public Void ActionPerformed (ActionEvent E) {
IF (TableView.getSelectedRow ()! = -1) {
Int selectedrow = TableView.getSelectedRow ();
DataModel.RemOverow (SELECTEDROW);
IF (SELECTEDROW> 0) {
TableView.selectRowSelectionInterval (SELECTEDROW - 1, SELECTEDROW - 1);
} else if (TableView.GetrowCount ()> 0) {
TableView.setrowSelectionInterval (0, 0);
}
}
}
});
