如何在javafx中禁用最大化选项?

我正在创建一个javafx程序。我使用了.fxml代码来设计页面,但是有一个问题,每当我运行程序时,它在默认高度和宽度下都可以正常工作,但是当我最大化这个结果时,按钮和其他内容仍然保持在默认高度和宽度的原始位置。它们没有随高度和宽度而调整。因为它是一个MP3播放器,可以执行其他一些小功能,所以我希望它的大小不能扩展(它不能最大化)。这也能解决我的问题。

FXML代码

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.text.Font?>

<GridPane alignment="top_left" hgap="10" prefHeight="475.0" prefWidth="800.0" style="-fx-background-color: white;" vgap="10" xmlns="http://javafx.com/javafx/8.0.121" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
   <columnConstraints>
      <ColumnConstraints />
   </columnConstraints>
   <rowConstraints>
      <RowConstraints />
      <RowConstraints />
   </rowConstraints>
   <children>
      <Label prefHeight="49.0" prefWidth="800.0" text="Spotify Downloader Music Player">
         <font>
            <Font name="Comic Sans MS" size="24.0" />
         </font>
         <GridPane.margin>
            <Insets left="10.0" />
         </GridPane.margin></Label>
      <GridPane GridPane.rowIndex="1">
        <columnConstraints>
          <ColumnConstraints hgrow="SOMETIMES" maxWidth="392.0" minWidth="10.0" prefWidth="253.0" />
          <ColumnConstraints hgrow="SOMETIMES" maxWidth="551.0" minWidth="10.0" prefWidth="391.0" />
            <ColumnConstraints hgrow="SOMETIMES" maxWidth="551.0" minWidth="10.0" prefWidth="217.0" />
        </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>
         <children>
            <Button mnemonicParsing="false" prefHeight="30.0" prefWidth="275.0" text="Home">
               <font>
                  <Font size="14.0" />
               </font>
            </Button>
            <Button mnemonicParsing="false" prefHeight="45.0" prefWidth="257.0" text="Playlist" GridPane.rowIndex="1">
               <font>
                  <Font size="14.0" />
               </font>
            </Button>
            <Button mnemonicParsing="false" prefHeight="47.0" prefWidth="257.0" text="Settings" GridPane.rowIndex="2">
               <font>
                  <Font size="14.0" />
               </font>
            </Button>
            <Button mnemonicParsing="false" prefHeight="51.0" prefWidth="257.0" text="About" GridPane.rowIndex="3">
               <font>
                  <Font size="14.0" />
               </font>
            </Button>
            <Label prefHeight="33.0" prefWidth="253.0" text="Music name" GridPane.columnIndex="1">
               <font>
                  <Font size="14.0" />
               </font>
               <GridPane.margin>
                  <Insets left="10.0" />
               </GridPane.margin>
            </Label>
            <TextField prefHeight="34.0" prefWidth="543.0" GridPane.columnIndex="1" GridPane.rowIndex="1">
               <font>
                  <Font size="14.0" />
               </font>
               <GridPane.margin>
                  <Insets left="10.0" />
               </GridPane.margin>
            </TextField>
            <Button mnemonicParsing="false" text="Search" GridPane.columnIndex="2" GridPane.rowIndex="1">
               <GridPane.margin>
                  <Insets left="10.0" />
               </GridPane.margin>
            </Button>
         </children>
      </GridPane>
   </children>
</GridPane>

如何在javafx中禁用最大化选项?

请同时提出以下问题的答案: 如何通过大小扩展来改变内容的位置?

提前谢谢。