问题描述
我是JavaFX的新手，我无法为Controleur类中的按钮设置事件处理程序，而该类必须由vue和modele的Controleur的构造函数来操作.
I am new to JavaFX and I cannot set the eventhandler for the buttons in the class Controleur that has to manipulate with the Contructor of Controleur of vue and modele.
问题是如何在GUI类中创建对象以与Controleur类中的Controleur的构造方法匹配?
The question how can i create the object in class GUI to match with the Constructor of Controleur in class Controleur?
任何帮助将不胜感激.
这是我的课程 GUI :
public class GUI extends Application implements IView{
TextField textfield1, textfield2, textfield3, textfield4, textfield5;
Button button0, button1, button2, button3, button4, button5, button6, button7, button8, button9;
Button button_add,button_sub,button_div,button_mult,button_virgule,button_neg,button_push,button_clear,button_backspace;
// TODO Auto-generated method stub
@Override
public void start(Stage primaryStage) throws Exception {
// TODO Auto-generated method stub
AnchorPane anchorPane= new AnchorPane();
//error place as i have no idea to create object controleur with parameter vue and modele
Controleur controleur=new Controleur();
Scene sc = new Scene(anchorPane, 400.0, 375.0);
primaryStage.setTitle("Ma calculette");
primaryStage.setScene(sc);
primaryStage.show();
textfield1= new TextField();
textfield1.setPrefHeight(27.0);
textfield1.setPrefWidth(400.0);
textfield1.setLayoutY(109.0);
textfield1.setEditable(false);
textfield1.setAlignment(Pos.CENTER_RIGHT);
textfield1.setId("textfield1");
anchorPane.getChildren().add(textfield1);
textfield2= new TextField();
textfield2.setPrefHeight(27.0);
textfield2.setPrefWidth(400.0);
textfield2.setLayoutY(82.0);
textfield2.setEditable(false);
textfield2.setAlignment(Pos.CENTER_RIGHT);
textfield2.setId("textfield2");
anchorPane.getChildren().add(textfield2);
button7 = new Button("7");
button7.setPrefHeight(34.0);
button7.setPrefWidth(82.0);
button7.setLayoutY(207.0);
button7.setLayoutX(21.0);
button7.setMnemonicParsing(false);
button7.setId("seven");
//button7.setOnAction(handle);
anchorPane.getChildren().add(button7);
button4 = new Button("4");
button4.setPrefHeight(34.0);
button4.setPrefWidth(82.0);
button4.setLayoutY(241.0);
button4.setLayoutX(21.0);
button4.setMnemonicParsing(false);
//button4.setOnAction(handle);
button4.setId("four");
}
这是我的课程 Controleur :
public class Controleur implements ActionListener{
GUI vue;
Accumulateur modele;
public Controleur(GUI vue, Accumulateur modele) {
this.vue=vue;
this.modele=modele;
}
@Override
public void actionPerformed(ActionEvent event) {
// TODO Auto-generated method stub
if(vue.textfield1.getText().isEmpty() || modele.pile.empty()) {
if (event.getSource() == vue.button1) {
vue.textfield1.setText(vue.textfield1.getText()+ "1");
}else if (event.getSource() == vue.button2) {
vue.textfield1.setText(vue.textfield1.getText() + "2");
}else if (event.getSource() == vue.button3) {
vue.textfield1.setText(vue.textfield1.getText() + "3");
}else if (event.getSource() == vue.button4) {
vue.textfield1.setText(vue.textfield1.getText() + "4");
}else if (event.getSource() == vue.button5) {
vue.textfield1.setText(vue.textfield1.getText() + "5");
}else if (event.getSource() == vue.button6) {
vue.textfield1.setText(vue.textfield1.getText() + "6");
}else if (event.getSource() == vue.button7) {
vue.textfield1.setText(vue.textfield1.getText() + "7");
}else if (event.getSource() == vue.button8) {
vue.textfield1.setText(vue.textfield1.getText() + "8");
}else if (event.getSource() == vue.button9) {
vue.textfield1.setText(vue.textfield1.getText() + "9");
}else if (event.getSource() == vue.button0) {
vue.textfield1.setText(vue.textfield1.getText() + "0");
}else if (event.getSource() == vue.button_virgule) {
if(!vue.textfield1.getText().contains(".")) {
vue.textfield1.setText(vue.textfield1.getText() + ".");
}else {
}
}else if (event.getSource() == vue.button_push) {
modele.pile.push(Double.parseDouble(vue.textfield1.getText()));
}else if (event.getSource() == vue.button_backspace) {
if(!vue.textfield1.getText().isEmpty()) {
vue.textfield1.setText(""+vue.textfield1.getText().substring(0, vue.textfield1.getText().length() - 1));
}else {
}
}
}
推荐答案
JavaFX包含EventHandler，因此您无需使用awt库.另外，您声明了Controleur的实例，但没有提及任何内容作为参数，因此会出现编译错误.下一步在Gui类中:
JavaFX includes EventHandler , so you don’t need to use awt libraries.Also, you declared instance of Controleur but didn’t mentioned anything as argument, so there will be compiling error. Do nextIn Gui class :
Controleur controleur = new Controleur(this);
button.setOnAction(controleur);
在控制人员课程中:
Gui parent;
Accumulator accumulator;
public Controleur(Gui parent){
this.parent = parent;
accumulator = new Accumulator ();
}
public void handle(Event event){
Object ob = event.getSource();
//here we communicate through reference parent
if(ob == parent.button){
String data = parent.textField.getText();
// here we add value to list in Accumulator class through accumulator reference
accumulator.list.add(data);
}
}
在Accumulator类(它是模型)中:
In Accumulator class (which is model) :
List list;
Accumulator (){
list = new ArrayList();
}
当您按下按钮时，通过Controleur类父级的引用，它询问控制器已按下了哪个按钮?然后，通过参考累加器，取决于所按下的按钮，控制器将值通过累加器传递到Accimulator类(为model)中的List，以将数据保存在list中.这样便可以将值从GUI传递到Controller到Model.
When you press button ,through the reference of Controleur class parent it asks Controller what button has been pressed? Then , through the reference accumulator , depends on what button has been pressed, Controler pass value through accumulator to List in Accimulator class(which is model ) to save data in list. That’s how you can pass value from GUI to Controller to Model.
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