Highlighting a row in table view in javafx [duplicate] - javafx

Question

I need to add color to row and column based on pnl value. How can I change the color of the row and how do I get pnl value for determining change in the color of the row.
TreeTableColumn<ClosedTradesPnL, String> symColumn = new TreeTableColumn<>("Symbol");
symColumn.setPrefWidth(100);
symColumn.setCellValueFactory(
(TreeTableColumn.CellDataFeatures<ClosedTradesPnL, String> param) ->
new ReadOnlyStringWrapper(param.getValue().getValue().getSymbol())
);
TreeTableColumn<ClosedTradesPnL, Date> expiryColumn =
new TreeTableColumn<>("Expiry Date");
expiryColumn.setPrefWidth(100);
expiryColumn.setCellValueFactory(
(TreeTableColumn.CellDataFeatures<ClosedTradesPnL, Date> param) ->
new ReadOnlyObjectWrapper(param.getValue().getValue().getExpiry_date())
);
TreeTableColumn<ClosedTradesPnL, String> pnlColumn =
new TreeTableColumn<>("PnL");
pnlColumn.setPrefWidth(100);
// pnlColumn.setStyle(" -fx-background-color: red ;");
// pnlColumn.setCellValueFactory(
// (TreeTableColumn.CellDataFeatures<ClosedTradesPnL, String> param) ->
// new ReadOnlyStringWrapper(param.getValue().getValue().getRealized_PNL())
// );
pnlColumn.setCellValueFactory(new Callback<CellDataFeatures<ClosedTradesPnL, String>, ObservableValue<String>>() {
#Override
public ObservableValue<String> call(CellDataFeatures<ClosedTradesPnL, String> p) {
int foo = Integer.parseInt(p.getValue().getValue().getRealized_PNL().replace(",", "").replace(".", ""));
if( foo == 0){
System.out.println("color app"+p.getValue().getValue().getRealized_PNL());
pnlColumn.setStyle(" -fx-background-color: red ;");
}else{
pnlColumn.setStyle("-fx-background-color: white ;");
}
System.out.println(p.getValue().getValue().getRealized_PNL());
return new ReadOnlyObjectWrapper(p.getValue().getValue().getRealized_PNL());
}
});
TreeTableView<ClosedTradesPnL> treeTableView = new TreeTableView<>(root);
treeTableView.getColumns().setAll(symColumn, expiryColumn,pnlColumn);
// pnlColumn.setStyle("-fx-alignment: center-right;-fx-control-inner-background: slateblue;");
sceneRoot.getChildren().add(treeTableView);
// if (treeTableView.getRow(root)){treeTableView.setBackground(Background.RED);}
stage.setScene(scene);
stage.show();
}

Answer 1

This should be self explanatory, I've included a few comments.
import java.util.Date;
import javafx.application.Application;
import javafx.beans.property.ReadOnlyDoubleWrapper;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.beans.property.ReadOnlyStringWrapper;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.scene.Scene;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeTableCell;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeTableRow;
import javafx.scene.control.TreeTableView;
import javafx.stage.Stage;
public class StyleTableRow extends Application {
#Override
public void start(Stage primaryStage) {
TreeTableView<ClosedTradesPnL> ttv = new TreeTableView<>(new TreeItem<>(new ClosedTradesPnL()));
for (int i=0;i<10;i++) ttv.getRoot().getChildren().add(new TreeItem<>(new ClosedTradesPnL()));
ttv.getRoot().setExpanded(true);
TreeTableColumn<ClosedTradesPnL, String> symColumn = new TreeTableColumn<>("Symbol");
symColumn.setCellValueFactory((param) ->
new ReadOnlyStringWrapper(param.getValue().getValue().getSymbol())
);
TreeTableColumn<ClosedTradesPnL, Date> expiryColumn = new TreeTableColumn<>("Expiry Date");
expiryColumn.setCellValueFactory((param) ->
new ReadOnlyObjectWrapper<>(param.getValue().getValue().getExpiry_date())
);
//use Number for type of data in column
TreeTableColumn<ClosedTradesPnL, Number> pnlColumn = new TreeTableColumn<>("PnL");
pnlColumn.setCellValueFactory((param) ->
new ReadOnlyDoubleWrapper(param.getValue().getValue().getRealized_PNL())
);
//now use a cellFactory to style the cell
//you can get the row and style it as well
pnlColumn.setCellFactory((TreeTableColumn<ClosedTradesPnL, Number> param) -> {
TreeTableCell cell = new TreeTableCell<ClosedTradesPnL, Number>(){
#Override
//by using Number we don't have to parse a String
protected void updateItem(Number item, boolean empty) {
super.updateItem(item, empty);
TreeTableRow<ClosedTradesPnL> ttr = getTreeTableRow();
if (item == null || empty){
setText(null);
ttr.setStyle("");
setStyle("");
} else {
ttr.setStyle(item.doubleValue() > 0
? "-fx-background-color:lightgreen"
: "-fx-background-color:pink");
setText(item.toString());
setStyle(item.doubleValue() > 0
? "-fx-background-color:green"
: "-fx-background-color:red");
}
}
};
return cell;
});
ttv.getColumns().setAll(symColumn, expiryColumn,pnlColumn);
Scene scene = new Scene(ttv, 500, 500);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
private static class ClosedTradesPnL{
private SimpleStringProperty symbol = new SimpleStringProperty("symbol");
private SimpleObjectProperty<Date> expiry_date = new SimpleObjectProperty<>(new Date(System.currentTimeMillis()));
private SimpleDoubleProperty realized_PNL= new SimpleDoubleProperty(Math.random()-0.5);
public String getSymbol() {return symbol.get();}
public Date getExpiry_date() {return expiry_date.get();}
public double getRealized_PNL() {return realized_PNL.get();}
}
}