我(几乎)找到了我想要的东西:
我的-tab.fxml:
<HBox>
<fx:define>
<Label fx:id="arrow" alignment="center" text="" maxWidth="Infinity" VBox.vgrow="ALWAYS" HBox.hgrow="ALWAYS">
<graphic>
<ImageView fitWidth="100" preserveRatio="true" smooth="true">
<image>
<Image url="peet/resources/images/arrow_right.png"/>
</image>
</ImageView>
</graphic>
</Label>
</fx:define>
<children>
<Button wrapText="true" text="AAA" maxHeight="Infinity" maxWidth="Infinity" VBox.vgrow="ALWAYS" HBox.hgrow="ALWAYS" />
<fx:reference source="arrow" />
<Button text="BBB" wrapText="true" minHeight="150" minWidth="100" maxWidth="Infinity" VBox.vgrow="ALWAYS" HBox.hgrow="ALWAYS" />
<fx:reference source="arrow" />
<Button text="CCC" wrapText="true" minHeight="150" minWidth="100" maxWidth="Infinity" VBox.vgrow="ALWAYS" HBox.hgrow="ALWAYS" />
<fx:reference source="arrow" />
<Button text="DDD" wrapText="true" minHeight="150" minWidth="100" maxWidth="Infinity" VBox.vgrow="ALWAYS" HBox.hgrow="ALWAYS" />
</children>
</HBox>
这仅在我们仅进行 1 次引用时才有效。如果我们进行 3 次引用,就像这里一样,我们会得到这个异常:
Children: duplicate children added: parent = HBox@2df02fde
file:/C:/.../my-tab.fxml:48
file:/C:/.../Xxx.jar!/xxx/client/MainTabs.fxml:16
at javafx.scene.Parent$1.onProposedChange(Parent.java:307)
at com.sun.javafx.collections.VetoableObservableList.add(VetoableObservableList.java:165)
at com.sun.javafx.collections.ObservableListWrapper.add(ObservableListWrapper.java:144)
at javafx.fxml.FXMLLoader$Element.add(FXMLLoader.java:130)
at javafx.fxml.FXMLLoader$PropertyElement.add(FXMLLoader.java:1179)
at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:609)
at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2430)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2136)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2028)
at javafx.fxml.FXMLLoader$IncludeElement.constructValue(FXMLLoader.java:937)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:567)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2314)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2131)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2028)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2742)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2721)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2694)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2683)
at xxx.client.XXX.start(XXX.java:21)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:206)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:173)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:67)
at java.lang.Thread.run(Thread.java:722)
有什么选择吗?