java - SceneBuilder 节点不可选择

标签 java javafx javafx-8 fxml scenebuilder

在我的 JavaFX 应用程序中，某些节点显示在预览中，但不可选择，也不会显示在层次结构中。 SceneBuilder 不可定位示例:

SceneBuilder untargetable example

在此示例中，“名字”列不可定位，并且不会显示在层次结构中，即使它与“姓氏”列具有相同的代码。 “新建...”和“编辑...”按钮也是如此。

我的SceneBuilder版本是8.3.0。 我正在使用 eclipse，并且如果必须手动执行此操作，我会通过 FXGraph 编辑 fxml。

FXML:

<AnchorPane xmlns:fx="http://javafx.com/fxml" fx:controller="de.is2.address.view.PersonOverviewController" prefHeight="300.0" prefWidth="600.0">

<children>
    <SplitPane dividerPositions="0.29797979797979796" layoutX="130.0" layoutY="70.0" prefHeight="300.0" prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0"> 
        <items>
            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0"> 
                <children>
                    <TableView fx:id="personTable" layoutX="-25.0" layoutY="-21.0" prefHeight="200.0" prefWidth="200.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0"> 
                        <columns>
                            <TableColumn fx:id="firstNameColumn" prefWidth="75.0" text="First Name"/> 
                        </columns>
                        <columns>
                            <TableColumn fx:id="lastNameColumn" prefWidth="75.0" text="Last Name"/> 
                        </columns>
                        <columnResizePolicy><TableView fx:constant="CONSTRAINED_RESIZE_POLICY" /></columnResizePolicy>
                    </TableView>
                </children>
            </AnchorPane>
            <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0"> 
                <children>
                    <Label layoutX="54.0" layoutY="37.0" text="Person Details" AnchorPane.leftAnchor="5.0" AnchorPane.topAnchor="5.0"/> 
                    <GridPane layoutX="67.0" layoutY="78.0" AnchorPane.leftAnchor="5.0" AnchorPane.rightAnchor="5.0" AnchorPane.topAnchor="30.0"> 
                        <columnConstraints>
                            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0"/> 
                        </columnConstraints>
                        <columnConstraints>
                            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0"/> 
                        </columnConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <rowConstraints>
                            <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES"/> 
                        </rowConstraints>
                        <children>
                            <Label text="First Name"/> 
                            <Label text="Last Name" GridPane.rowIndex="1"/> 
                            <Label text="Street" GridPane.rowIndex="2"/> 
                            <Label text="City" GridPane.rowIndex="3"/> 
                            <Label text="Postal Code" GridPane.rowIndex="4"/> 
                            <Label text="Birthday" GridPane.rowIndex="5"/> 
                            <Label fx:id="firstNameLabel" text="Label" GridPane.columnIndex="1"/> 
                            <Label fx:id="lastNameLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="1"/> 
                            <Label fx:id="streetLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="2"/> 
                            <Label fx:id="cityLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="3"/> 
                            <Label fx:id="postalCodeLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="4"/> 
                            <Label fx:id="birthdayLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="5"/> 
                        </children>
                    </GridPane>
                    <ButtonBar layoutX="203.0" layoutY="244.0" prefHeight="39.0" prefWidth="265.0" AnchorPane.bottomAnchor="5.0" AnchorPane.rightAnchor="10.0"> 
                        <buttons>
                            <Button mnemonicParsing="false" text="New..."/> 
                        </buttons>
                        <buttons>
                            <Button mnemonicParsing="false" text="Edit..."/> 
                        </buttons>
                        <buttons>
                            <Button mnemonicParsing="false" onAction="#handleDeletePerson" text="Delete"/> 
                        </buttons>
                    </ButtonBar>
                </children>
            </AnchorPane>
        </items>
    </SplitPane>
</children>

最佳答案

在 FXML 中的多个位置，您重复定义相同标记的内容，如下所示(片段):

<columns>
   <TableColumn fx:id="firstNameColumn" prefWidth="75.0" text="First Name"/> 
</columns>
<columns> <!-- repetition!! -->  
   <TableColumn fx:id="lastNameColumn" prefWidth="75.0" text="Last Name"/> 
</columns>

这是不正确的 - 您应该打开一次标签，然后指定所有子级，然后关闭一次。您为 GridPane 的子级执行的操作正确，例如:

<GridPane layoutX="67.0" layoutY="78.0" AnchorPane.leftAnchor="5.0" AnchorPane.rightAnchor="5.0" AnchorPane.topAnchor="30.0"> 
    <children>
        <Label text="First Name"/> 
        <Label text="Last Name" GridPane.rowIndex="1"/> 
        <Label text="Street" GridPane.rowIndex="2"/> 
        ...
    </children>
</GridPane>

根据我的经验，JavaFx 本身接受(如预期的那样显示)一些非常有趣的 FXML 构造，但 SceneBuilder 往往更加保守，只接受典型的构造。这可能就是为什么预览看起来不错，但层次结构不完整的原因。如果您手动编辑 FXML，请首先查看 SceneBuilder 创建相同结构的方式 - 这就是它所期望的方式。

如果您更正各处的嵌套，则生成的 FXML 为:

<AnchorPane xmlns:fx="http://javafx.com/fxml" fx:controller="de.is2.address.view.PersonOverviewController"
    prefHeight="300.0" prefWidth="600.0">

    <children>
        <SplitPane dividerPositions="0.29797979797979796" layoutX="130.0" layoutY="70.0" prefHeight="300.0"
            prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0"
            AnchorPane.topAnchor="0.0">
            <items>
                <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
                    <children>
                        <TableView fx:id="personTable" layoutX="-25.0" layoutY="-21.0" prefHeight="200.0"
                            prefWidth="200.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0"
                            AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                            <columns>
                                <TableColumn fx:id="firstNameColumn" prefWidth="75.0" text="First Name" />
                                <TableColumn fx:id="lastNameColumn" prefWidth="75.0" text="Last Name" />
                            </columns>
                            <columnResizePolicy>
                                <TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
                            </columnResizePolicy>
                        </TableView>
                    </children>
                </AnchorPane>
                <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
                    <children>
                        <Label layoutX="54.0" layoutY="37.0" text="Person Details" AnchorPane.leftAnchor="5.0"
                            AnchorPane.topAnchor="5.0" />
                        <GridPane layoutX="67.0" layoutY="78.0" AnchorPane.leftAnchor="5.0"
                            AnchorPane.rightAnchor="5.0" AnchorPane.topAnchor="30.0">
                            <columnConstraints>
                                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
                            </columnConstraints>
                            <rowConstraints>
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
                            </rowConstraints>
                            <children>
                                <Label text="First Name" />
                                <Label text="Last Name" GridPane.rowIndex="1" />
                                <Label text="Street" GridPane.rowIndex="2" />
                                <Label text="City" GridPane.rowIndex="3" />
                                <Label text="Postal Code" GridPane.rowIndex="4" />
                                <Label text="Birthday" GridPane.rowIndex="5" />
                                <Label fx:id="firstNameLabel" text="Label" GridPane.columnIndex="1" />
                                <Label fx:id="lastNameLabel" text="Label" GridPane.columnIndex="1"
                                    GridPane.rowIndex="1" />
                                <Label fx:id="streetLabel" text="Label" GridPane.columnIndex="1"
                                    GridPane.rowIndex="2" />
                                <Label fx:id="cityLabel" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="3" />
                                <Label fx:id="postalCodeLabel" text="Label" GridPane.columnIndex="1"
                                    GridPane.rowIndex="4" />
                                <Label fx:id="birthdayLabel" text="Label" GridPane.columnIndex="1"
                                    GridPane.rowIndex="5" />
                            </children>
                        </GridPane>
                        <ButtonBar layoutX="203.0" layoutY="244.0" prefHeight="39.0" prefWidth="265.0"
                            AnchorPane.bottomAnchor="5.0" AnchorPane.rightAnchor="10.0">
                            <buttons>
                                <Button mnemonicParsing="false" text="New..." />
                                <Button mnemonicParsing="false" text="Edit..." />
                                <Button mnemonicParsing="false" onAction="#handleDeletePerson" text="Delete" />
                            </buttons>
                        </ButtonBar>
                    </children>
                </AnchorPane>
            </items>
        </SplitPane>
    </children>
</AnchorPane>

这在 SceneBuilder 8.4.1 中为我提供了所需的结果:所有表格列和 ButtonBar 中的所有按钮都在层次结构中显示并可供选择。

关于java - SceneBuilder 节点不可选择，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46910581/

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