如何从主控制器跨两个fxml绑定控件

问题描述

我需要在主控制器中绑定来自不同fxml的控件.我有3个名为MainView.fxml，ChildView1.fxml和ChildView2.fxml的fxml文件.

I Need to bind controls from different fxml in the main controller.I have 3 fxml files named MainView.fxml, ChildView1.fxml and ChildView2.fxml.

MainView.fxml

<AnchorPane fx:id="view" prefHeight="280.0" prefWidth="500.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="binding.example2.MainViewController">
<children>
<VBox prefHeight="280.0" prefWidth="500.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
  <children>
    <fx:include fx:id="child1" source="ChildView1.fxml" />
    <fx:include fx:id="child2" source="ChildView2.fxml" />
  </children>
</VBox>
</children>
</AnchorPane>

ChildView1.fxml

<AnchorPane fx:id="view" prefHeight="78.0" prefWidth="464.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="binding.example2.ChildView1Controller">
<children>
<HBox layoutX="32.0" layoutY="14.0" prefHeight="51.0" prefWidth="200.0" spacing="10.0">
 <children>
    <Button fx:id="button1" mnemonicParsing="false" prefHeight="37.0" text="Button1" />
    <Button fx:id="button2" mnemonicParsing="false" prefHeight="37.0" text="Button2" />
  </children>
</HBox>
</children>
</AnchorPane>

ChildView2.fxml

<AnchorPane fx:id="view" prefHeight="244.0" prefWidth="568.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="binding.example2.ChildView2Controller">
 <children>
   <TableView fx:id="tableView" prefHeight="244.0" prefWidth="568.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0" />
 </children>
</AnchorPane>

MainController.java

package binding.example2;
import javafx.fxml.FXML;
import javafx.scene.Parent;
import javafx.scene.layout.AnchorPane;        
public class MainViewController {
@FXML
private Parent view;
@FXML
private AnchorPane child1;
@FXML
private AnchorPane child2;
@FXML
private ChildView1Controller childView1Controller;
@FXML
private ChildView2Controller childView2Controller; 
@FXML
 void initialize() {
      System.out.println("MainViewController.initialize()");
   // childView1Controller.getButton1() ;
 }

public Parent getView() {
     return view;
  }

}

ChildView1Controller.java

package binding.example2;

import java.net.URL;
import java.util.ResourceBundle;

import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.control.Button;


public class ChildView1Controller {

@FXML private ResourceBundle resources;

@FXML private URL location;

@FXML private Button button1;

@FXML private Button button2;

@FXML private Node view;


@FXML
void initialize() {
    System.out.println("ChildView1Controller.initialize()");

    button1.setDisable(true);

}

 public Node getView()
 {
    return view;
 }

 public Button getButton1(){
    return button1; 
 }

}

ChildView2Controller.java

package binding.example2;


import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;


public class ChildView2Controller {

@FXML private Node view;

@FXML private TableView<Person> tableView;

ObservableList<Person> data ;

public Node getView(){
    return view ;
   }

 @FXML
 void initialize() {
    System.out.println("ChildView2Controller.initialize()");

    //populateTable();
 }

public TableView<Person> getTableView(){
    return tableView ;
}   
 }

默认情况下，从ChildView1Controller禁用button1.

By default, button1 is disabled from ChildView1Controller.

当我的另一个视图(ChildView2.fxml)中的表行被选中时，我想启用它.取消选择表格行时，再次禁用它.基本上我想绑定按钮和表格，以便在选择表格行时启用该按钮.请使用MainViewController代码帮助我绑定按钮和表格行.

I want to enable it when a table row in my other view (ChildView2.fxml) is selected. Again disable it when the table row is deselected. Basically i want to bind the button and table so that button is enabled when a table row is selected.Please help me with the MainViewController code to bind the button and the table row.

推荐答案

您可以按照此处.

然后，您可以在MainViewController的initialize方法上执行所需的绑定.考虑到子控制器使用getter方法公开了Button和TableView，因此MainViewController可以是:

Then, you can perform the desired bindings at MainViewController's initialize method. Considering that the child controllers expose the Button and the TableView with getter methods, the MainViewController could be:

public class MainViewController {
    @FXML
    private ChildView1Controller childView1Controller;
    @FXML
    private ChildView2Controller childView2Controller;

    @FXML
    public void initialize() {
        childView1Controller.getButton1().visibleProperty().bind(
            childView2Controller.getTableView().getSelectionModel().selectedItemProperty().isNotNull());
    }
}

要正确注入这些子控制器，需要更改 MainView.fxml 中的include元素，并更新其fx:id属性:

To correctly inject these child controllers, it is needed to change the include elements at MainView.fxml, updating their fx:id attribute:

<fx:include fx:id="childView1" source="ChildView1.fxml" />
<fx:include fx:id="childView2" source="ChildView2.fxml" />

@Dil的相关评论:

Relevant comment from @Dil:

要求是，如果所包含资源的fx:id为"xxx"，则相应控制器的变量名称为xxxController(因此details-> detailsController)

这篇关于如何从主控制器跨两个fxml绑定控件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！