英文:
Remove a button by clicking on it in JavaFX
问题
我正在使用 JavaFX 构建一个日历/计划应用程序。该应用程序包含一个单独的 GridPane，其中有 35 个 (7x5) VBox。在这些 VBox 中有 TaskButton（在下面实现）。当我右键点击一个 TaskBox 时，它将把文本变成灰色，而当我左键点击 TaskButton 时，我希望能够删除该按钮。我已经了解的内容如下：
- AnchorPaneNode（扩展自 VBox）没有静态的 getChildren() 方法。
- 我不能为 pane 创建单独的实例变量，因为我不知道会有多少个实例。
- getParent().getChildren() 不起作用，因为父类的 getChildren() 方法不可见。
- VBox 有一个公共的 getChildren() 方法，但它不是静态的。
- 我尝试创建一个静态访问器来获取 getChildren()，但未成功。
还有什么其他方法可以尝试，在右键点击时删除该按钮？感谢您的帮助！
英文:
I am building a calander/planner application using JavaFX. The app consists of a single GridPane with 35 (7x5) VBox's. Within these VBox's are TaskButtons (implemented below). When I right click a TaskBox it will turn the text to grey and when I left click the TsskButton I want it to delete the button. Things I know already.
- AnchorPaneNode (extends VBox) doesn't have a static getChildren() method.
- I cannot create a separate instance variable for pane since I will not know how many I will have.
- getParent().getChildren() doesn't work because the parents method of getChildren() is not visible.
- VBox has a public getChildren(), but it is not static.
- I tried to make a static accessor to getChildren(), but was unable to.
What else can I try to get this button removed when right clicking? Thank you for your help!
public class TaskButton extends Button {
protected int buttonNum = AnchorPaneNode.listIndex;
public TaskButton(String str)
{
super(str);
setStyle("-fx-background-color: transparent;");
setOnMouseClicked(e -> {
if(e.getButton() == MouseButton.SECONDARY)
{
//I want to remove this button from the VBox, neither of these work
AnchorPaneNode.getChildren().remove(this);
//or
getParent().getChildren().remove(this);
}
else if(e.getButton() == MouseButton.PRIMARY)
{
setStyle("-fx-background-color: transparent; -fx-text-fill: #666666;");
}
});
}
}
答案1
得分: 2
找到了我自己问题的答案！
对于那些遇到相同问题的人，这是我解决它的方法：
setOnMouseClicked(e -> {
if (e.getButton() == MouseButton.SECONDARY) {
//我想要将此按钮从VBox中移除，但以下两种方法都不起作用
//AnchorPaneNode.getChildren().remove(this);
//或者
VBox vbox = (VBox) getParent();
vbox.getChildren().remove(this);
} else if (e.getButton() == MouseButton.PRIMARY) {
setStyle("-fx-background-color: transparent; -fx-text-fill: #666666;");
}
});
我需要访问 VBox 提供的 public getChildren() 方法，我通过将 (this)getParent() 强制转换为 VBox 来实现。然后，我可以使用 getChildren() 来移除 "this"。
英文:
Found the answer to my own question!
For those that run into the same issue this is what I did to solve it:
setOnMouseClicked(e -> {
if (e.getButton() == MouseButton.SECONDARY) {
//I want to remove this button from the VBox, neither of these work
//AnchorPaneNode.getChildren().remove(this);
//or
VBox vbox = (VBox) getParent();
vbox.getChildren().remove(this);
} else if (e.getButton() == MouseButton.PRIMARY) {
setStyle("-fx-background-color: transparent; -fx-text-fill: #666666;");
}
});
I needed to access the public getChildren() that VBox provides and I did so by casting (this)getParent() to a VBox. From there I was able to getChildren() and remove "this".
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