Dialog弹窗

• 创建Dialog弹窗泛型代表弹窗关闭后的返回值类型Dialog<ButtonType> dialog = new Dialog<>();

• 添加按钮并获取

  dialog.getDialogPane().getButtonTypes().add(ButtonType.CLOSE);  
  dialog.getDialogPane().getButtonTypes().add(ButtonType.OK);  
  Button close = (Button) dialog.getDialogPane().lookupButton(ButtonType.CLOSE);  
  Button ok = (Button) dialog.getDialogPane().lookupButton(ButtonType.OK);
  

• 设置文本和标题

  dialog.setHeaderText("I'm headerText");  
  dialog.setTitle("dialog");  
  dialog.setContentText("I'm content");
  

• 设置图标dialog.setGraphic(new Button("icon"));

• 设置界面大小dialog.getDialogPane().setPrefSize(300,300);

• 设置按钮点击后的效果（务必在show之前声明）

  dialog.showAndWait().ifPresent(buttonType -> {  
      switch (buttonType.getButtonData()) {  
          case OK_DONE:  
              dialog.setContentText("We are reader");  
              break;  
          case CANCEL_CLOSE:  
              dialog.setContentText("You are gay");  
              break;  
          default:  
      }  
  });
  

• 展示dialog.show();

• 设置界面大小（在show()后设置才有效果）

  dialog.setWidth(300);  
  dialog.setHeight(300);
  

• 以显示器为准设置位置

  dialog.setX(100);  
  dialog.setY(100);
  

• 窗口关闭监听

  dialog.setOnCloseRequest(event1 -> {  
      System.out.println("关闭");  
  });
  

• 获取点击的按钮

  dialog.setResultConverter(new Callback<ButtonType, ButtonType>() {  
      @Override  
      public ButtonType call(ButtonType param) {  
          System.out.println("param = " + param);  
          return param;  
      }  
  });