Question

有人可以建议如何在JavaFX中动态地将TableColumn添加到TableView中吗？

我需要在tableView上显示类Row，但我知道另一个动作后的节点数。当我尝试使用Node中的StringProperty来设置CellValueFactory时，我遇到了麻烦。从Node类我需要只显示保留和可靠性。

public class Row {
private int step;
private Node[] nodes;
private double p = 1;
private double c;
private StringProperty stepProperty;
private StringProperty pProperty;
private StringProperty cProperty;

Row(int step, Node[] nodes, double c){
    this.step = step;
    this.nodes = nodes;
    for (Node node:
         nodes) {
        p *= node.getReliability();
    }
    this.c = c;
}

public int getStep() {return step;}

public Node getNode(int index) {return nodes[index];}

public double getP() {return p;}

public double getC() {return c;}

public StringProperty stepProperty() {
    this.stepProperty = new SimpleStringProperty(step + "");
    return stepProperty;
}

public StringProperty pProperty() {
    this.pProperty = new SimpleStringProperty(p + "");
    return pProperty;
}

public StringProperty cProperty() {
    this.cProperty = new SimpleStringProperty(c + "");
    return cProperty;
} }

public class Node {
private StringProperty reserved;
private StringProperty reliability;
private StringProperty price;

Node(String reserved, String reliability, String price){
    this.reserved = new SimpleStringProperty(reserved);
    this.reliability = new SimpleStringProperty(reliability);
    this.price = new SimpleStringProperty(price);
}

public StringProperty reliabilityProperty() {
    return reliability;
}

public StringProperty priceProperty() {
    return price;
}

public StringProperty reservedProperty() {
    return reserved;
}

public double getReliability(){
return Double.parseDouble(reliability.get());}

public int getPrice(){return Integer.parseInt(price.get());}

public int getReserved(){return Integer.parseInt(reserved.get());}
}

Answer 1

您只需要以下几行：

TableView<Row> table = new TableView<>();

int numNodes = ... ;

TableColumn<Row, Number> stepCol = new TableColumn<>("Step");
stepCol.setCellValueFactory(cellData -> cellData.getValue().stepProperty());
table.getColumn().add(stepCol);

for (int n = 0 ; n < numNodes ; n++) {
    final int nodeIndex = n ;
    TableColumn<Row, String> reservedCol = new TableColumn<>("Reserved - "+nodeIndex);
    reservedCol.setCellValueFactory(cellData -> cellData.getValue().getNode(nodeIndex).reservedProperty());

    TableColumn<Row, String> reliabilityCol = new TableColumn<>("Reliability - "+nodeIndex);
    reliabilityCol.setCellValueFactory(cellData -> cellData.getValue().getNode(nodeIndex).reliabilityProperty());

    table.getColumns().add(reservedCol);
    table.getColumns().add(reliabilityCol);
}

TableColumn<Row, String> pCol = new TableColumn<>("P");
stepCol.setCellValueFactory(cellData -> cellData.getValue().pProperty());
table.getColumn().add(pCol);

TableColumn<Row, String> cCol = new TableColumn<>("C");
stepCol.setCellValueFactory(cellData -> cellData.getValue().cProperty());
table.getColumn().add(cCol);

如何在JavaFX中动态地将TableColumn添加到TableView？

1 个答案: