在同一场景的另一个JavaFX控制器中进行更改
这就是我的观点: 解释 整个窗口本身在一个名为CartWindowController的控制器上运行,而产品列表本身是一个名为CartItemComponent的JavaFX自定义控件,它有自己的控制器。因此,当我以编程方式创建实例并填充VBox时,列表中的每个项都有自己的控制器实例 问题 我不知道当用户单击X按钮时如何通知CartWindowController,该按钮由CartItemComponent控制器处理。如果有人能告诉我如何解决这个问题,我将不胜感激 以下是我的FXML在整个窗口中的外观: cartwindown.fxml CartItemComponent.java:在同一场景的另一个JavaFX控制器中进行更改,java,javafx,javafx-8,Java,Javafx,Javafx 8,这就是我的观点: 解释 整个窗口本身在一个名为CartWindowController的控制器上运行,而产品列表本身是一个名为CartItemComponent的JavaFX自定义控件,它有自己的控制器。因此,当我以编程方式创建实例并填充VBox时,列表中的每个项都有自己的控制器实例 问题 我不知道当用户单击X按钮时如何通知CartWindowController,该按钮由CartItemComponent控制器处理。如果有人能告诉我如何解决这个问题,我将不胜感激 以下是我的FXML在整个窗口中
您可以尝试将CartWindowController传递到CartItemComponent构造函数中,然后当您需要通知CartWindowController时,您可以调用方法、设置标志或触发事件,这是您的选择!您只需向CartItemComponent添加一个CartWindowController类型的参数,然后保存引用即可。假设CartState的属性是可观察的,类似这样的内容。item.setQuantity0;this.cartState.updateItemthis.item;可能会成功。我建议看一看和:ListView会自动更新它的列表单元格,并且可以从aListCellviacell.getListView访问ListView。使用自定义的ListView可能比自己实现功能简单得多。非常感谢,它工作得很好。出于某种原因,我从来没有想过。再次感谢!嘿,没问题!任何时候我能帮忙,就告诉我。我喜欢它,当我可以帮助轻Bub来了!!!
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.ScrollPane?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.VBox?>
<AnchorPane id="AnchorPane" fx:id="parent" prefHeight="400.0" prefWidth="600.0" styleClass="pane" stylesheets="@../assets/userwindow.css" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="ordermanagementsystem.controllers.CartWindowController">
<children>
<Button layoutX="25.0" layoutY="25.0" mnemonicParsing="false" onAction="#exitWindow" prefHeight="35.0" prefWidth="20.0" styleClass="back-button" />
<Label layoutX="262.0" layoutY="17.0" styleClass="heading" text="Cart" />
<ScrollPane hbarPolicy="NEVER" layoutY="97.0" prefHeight="315.0" prefWidth="600.0" styleClass="no-padding">
<content>
<AnchorPane prefWidth="600.0" styleClass="no-padding">
<children>
<VBox fx:id="productList" layoutX="25.0" prefWidth="350.0" />
<AnchorPane layoutX="425.0" layoutY="25.0" prefWidth="150.0" styleClass="no-padding">
<children>
<Label layoutX="18.0" styleClass="heading-sub" text="Summary" />
<Label layoutX="1.0" layoutY="55.0" text="Gross:" />
<Label fx:id="grossTotal" alignment="CENTER_RIGHT" layoutX="47.0" layoutY="55.0" prefHeight="17.0" prefWidth="103.0" text="RM0.00" />
<Label layoutX="1.0" layoutY="75.0" text="Packaging:" />
<Label fx:id="packagingTotal" alignment="CENTER_RIGHT" layoutX="73.0" layoutY="75.0" prefHeight="17.0" prefWidth="77.0" text="RM0.00" />
<Label layoutX="1.0" layoutY="95.0" text="Total:" />
<Label fx:id="total" alignment="CENTER_RIGHT" layoutX="40.0" layoutY="95.0" prefHeight="17.0" prefWidth="110.0" styleClass="green-text" text="RM0.00" />
<Button layoutY="125.0" mnemonicParsing="false" onAction="#checkout" prefHeight="39.0" prefWidth="150.0" styleClass="action-button" text="Check Out" />
</children>
</AnchorPane>
</children>
</AnchorPane>
</content>
</ScrollPane>
</children>
</AnchorPane>
package ordermanagementsystem.controllers;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import ordermanagementsystem.cart.CartState;
import ordermanagementsystem.orders.models.OrderItem;
import ordermanagementsystem.viewcomponents.CartItemComponent;
public class CartWindowController extends ViewController implements Initializable {
@FXML
public Parent parent;
@FXML
private VBox productList;
@FXML
private Label grossTotal;
@FXML
private Label packagingTotal;
@FXML
private Label total;
private CartState cartState;
@FXML
private void exitWindow(ActionEvent event) {
try {
this.openPage(this.parent, "MainWindow.fxml");
} catch (IOException ex) {
ex.printStackTrace();
}
}
@FXML
private void checkout(ActionEvent event) {
}
@Override
public void initialize(URL url, ResourceBundle rb) {
this.cartState = CartState.getInstance();
for (OrderItem item : this.cartState.getItems()) {
this.productList.getChildren().add(new CartItemComponent(item));
}
}
}
package ordermanagementsystem.viewcomponents;
import java.io.IOException;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.AnchorPane;
import ordermanagementsystem.DialogBox;
import ordermanagementsystem.cart.CartState;
import ordermanagementsystem.orders.models.OrderItem;
public class CartItemComponent extends AnchorPane {
@FXML
private AnchorPane frame;
@FXML
private TextField quantity;
@FXML
private Label total;
@FXML
private Label productName;
private OrderItem item;
private CartState cartState;
public CartItemComponent(OrderItem item) {
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/ordermanagementsystem/views/components/CartItemComponent.fxml"));
fxmlLoader.setRoot(this);
fxmlLoader.setController(this);
try {
fxmlLoader.load();
} catch (IOException exception) {
exception.getStackTrace();
}
this.cartState = CartState.getInstance();
this.item = item;
this.setQuantity(1);
this.quantity.setEditable(false);
this.productName.setText(this.item.getProduct().getName());
}
private void setQuantity(int quantity) {
this.quantity.setText(String.valueOf(quantity));
this.item.setQuantity(quantity);
this.cartState.updateItem(this.item);
this.total.setText("RM" + String.format("%.2f", item.getProduct().getPrice() * quantity));
}
private int getQuantity() {
return Integer.parseInt(this.quantity.getText());
}
private void updateSummary() {
}
@FXML
private void add(ActionEvent event) {
int quantity = this.getQuantity();
if (quantity == 99) {
DialogBox.showValidationDialog("The quantity cannot be over 99.");
} else {
this.setQuantity(quantity + 1);
}
}
@FXML
private void substract(ActionEvent event) {
int quantity = this.getQuantity();
if (quantity == 1) {
DialogBox.showValidationDialog("The quantity cannot be below 1.");
} else {
this.setQuantity(quantity - 1);
}
}
}