java 如何绑定逆布尔值，JavaFX
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how to bind inverse boolean, JavaFX
提问by Tomasz Mularczyk
My goal is to bind these two properties such as when checkboxis selected then paneWithControlsis enabled and vice-versa.
我的目标是绑定这两个属性，例如何时checkbox选择然后paneWithControls启用，反之亦然。
CheckBox checkbox = new CheckBox("click me");
Pane paneWithControls = new Pane();
checkbox.selectedProperty().bindBidirectional(paneWithControls.disableProperty());
with this code however its opposite to what I want. I need something like inverse boolean binding. Is it possible or do I have to make a method to deal with it?
使用此代码但是它与我想要的相反。我需要类似反向布尔绑定的东西。是否有可能或我必须制定一种方法来处理它？
回答by James_D
If you want only a one-way binding, you can use the not()method defined in BooleanProperty:
如果您只需要单向绑定，则可以使用中not()定义的方法BooleanProperty：
paneWithControls.disableProperty().bind(checkBox.selectedProperty().not());
This is probably what you want, unless you really have other mechanisms for changing the disableProperty()that do not involve the checkBox. In that case, you need to use two listeners:
这可能就是您想要的，除非您确实有其他disableProperty()不涉及checkBox. 在这种情况下，您需要使用两个侦听器：
checkBox.selectedProperty().addListener((obs, wasSelected, isNowSelected) ->
paneWithControls.setDisable(! isNowSelected));
paneWithControls.disableProperty().addListener((obs, wasDisabled, isNowDisabled) ->
checkBox.setSelected(! isNowDisabled));
回答by Ingo
checkbox.selectedProperty().bindBidirectional(paneWithControls.disableProperty().not());
should work
应该管用
回答by Mustafa
Using the EasyBind libraryone can easily create a new ObservableValue that from checkbox.selectedProperty()that has the invert of its values.
使用EasyBind 库可以很容易地创建一个新的 ObservableValue，checkbox.selectedProperty()它的值取反。
paneWithControls.disableProperty().bind(EasyBind.map(checkbox.selectedProperty(), Boolean.FALSE::equals));
回答by borovsky
Something like that? See link below http://docs.oracle.com/javase/8/javafx/api/javafx/beans/binding/BooleanExpression.html#not--
类似的东西？请参阅下面的链接 http://docs.oracle.com/javase/8/javafx/api/javafx/beans/binding/BooleanExpression.html#not--
