如何在JavaFX8的TableView上拦截MouseEvent.MOUSE_CLICKED [英] How to intercept MouseEvent.MOUSE_CLICKED on TableView on JavaFX8

问题描述

我正在创建一个自定义CheckBoxTableView，其中所选项目与CheckBox一起显示.如果选择项目后用户尝试对表格进行排序，则该表格看起来很混乱.我想提示用户，看看他们是否要继续.如果是这样，我想清除选择，如果没有，请仅使用该事件，这样就不会发生排序.

I am creating a custom CheckBoxTableView where the selected items are displayed with a CheckBox. If the user attempts to sort the table once items are selected, it appears to mess up. I would like to prompt the user to see if they would like to continue. If so, I would like to clear the selection, if not, simply consume the event so the sorting doesn't happen.

不幸的是，排序完成后，我的EventFilter似乎启动了.

Unfortunately - my EventFilter seems to fire after the sort was completed.

在TableView构造函数上，我放置了以下代码:

On the TableView constructor, I placed the following code:

addEventFilter(MouseEvent.MOUSE_CLICKED, event -> {
    if(event.getTarget() instanceof TableColumnHeader) {
        Alert a = new Alert(Alert.AlertType.CONFIRMATION);
        a.setContextText("you sure?");
        Optional<ButtonType> bt = a.showAndWait();
        if(bt.isPresent() && bt.get() == ButtonType.OK){
            //Clear selection
            getSelectionModel().clearSelection();
        }else {
            event.consume();
        }
    }
});

但是，当我的EventFilter触发时，该表已被排序.

But by the time my EventFilter fires, the table has been sorted.

有什么想法吗?

推荐答案

使用MouseEvent.MOUSE_PRESSED

MouseEvent.MOUSE_CLICKED在MouseEvent.MOUSE_RELEASED之后触发，为时已晚，无法拦截侦听器和侦听器:)

MouseEvent.MOUSE_CLICKED is fired after MouseEvent.MOUSE_RELEASED that's too late to intercept listeners and listeners :)

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