envoy/src/main/resources/fxml/ChatScene.fxml

<?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.ListView?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.control.Tooltip?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>

<GridPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="400.0" minWidth="350.0" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="envoy.client.ui.controller.ChatScene">
	<columnConstraints>
		<ColumnConstraints hgrow="SOMETIMES" maxWidth="1.7976931348623157E308" minWidth="10.0" percentWidth="20.0" prefWidth="161.0" />
		<ColumnConstraints hgrow="SOMETIMES" maxWidth="1.7976931348623157E308" minWidth="10.0" percentWidth="65.0" prefWidth="357.0" />
      <ColumnConstraints hgrow="SOMETIMES" maxWidth="1.7976931348623157E308" minWidth="6.285736083984375" percentWidth="15.0" prefWidth="48.000030517578125" />
	</columnConstraints>
	<rowConstraints>
		<RowConstraints maxHeight="1.7976931348623157E308" minHeight="10.0" percentHeight="10.0" prefHeight="70.0" vgrow="SOMETIMES" />
		<RowConstraints maxHeight="1.7976931348623157E308" minHeight="10.0" percentHeight="70.0" prefHeight="326.2857404436384" vgrow="SOMETIMES" />
      <RowConstraints maxHeight="1.7976931348623157E308" minHeight="10.0" percentHeight="5.0" prefHeight="50.0" vgrow="SOMETIMES" />
		<RowConstraints maxHeight="1.7976931348623157E308" minHeight="10.0" percentHeight="15.0" prefHeight="100.0" vgrow="SOMETIMES" />
	</rowConstraints>
	<children>
		<ListView fx:id="userList" onMouseClicked="#userListClicked" prefHeight="211.0" prefWidth="300.0" GridPane.rowIndex="1" GridPane.rowSpan="2147483647">
         <GridPane.margin>
            <Insets bottom="10.0" left="10.0" right="5.0" top="5.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding></ListView>
		<Label fx:id="contactLabel" prefHeight="16.0" prefWidth="250.0" text="Select a contact to chat with" GridPane.columnSpan="2">
         <GridPane.margin>
            <Insets bottom="5.0" left="10.0" right="5.0" top="10.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding></Label>
		<Button fx:id="settingsButton" mnemonicParsing="true" onAction="#settingsButtonClicked" text="_Settings" GridPane.columnIndex="2" GridPane.halignment="CENTER" GridPane.valignment="CENTER">
         <GridPane.margin>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding></Button>
		<ListView fx:id="messageList" prefHeight="257.0" prefWidth="155.0" GridPane.columnIndex="1" GridPane.columnSpan="2" GridPane.rowIndex="1" GridPane.rowSpan="2">
         <GridPane.margin>
            <Insets bottom="5.0" left="5.0" right="10.0" top="5.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding></ListView>
		<Button fx:id="postButton" defaultButton="true" disable="true" mnemonicParsing="true" onAction="#postMessage" prefHeight="10.0" prefWidth="65.0" text="_Post" GridPane.columnIndex="2" GridPane.halignment="CENTER" GridPane.rowIndex="3" GridPane.valignment="CENTER">
         <GridPane.margin>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding>
         <tooltip>
            <Tooltip anchorLocation="WINDOW_TOP_LEFT" autoHide="true" maxWidth="350.0" text="Click this button to send the message. If it is disabled, you first have to select a contact to send it to. A message may automatically be sent when you press (Ctrl + ) Enter, according to your preferences. Additionally sends a message when pressing &quot;Alt&quot; + &quot;P&quot;." wrapText="true" />
         </tooltip></Button>
      	<TextArea fx:id="messageTextArea" disable="true" onInputMethodTextChanged="#messageTextUpdated" onKeyPressed="#checkPostConditions" onKeyTyped="#checkKeyCombination" prefHeight="200.0" prefWidth="200.0" wrapText="true" GridPane.columnIndex="1" GridPane.rowIndex="3">
         <GridPane.margin>
            <Insets bottom="10.0" left="5.0" right="5.0" top="5.0" />
         </GridPane.margin>
         <opaqueInsets>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </opaqueInsets></TextArea>
      <Button mnemonicParsing="true" onAction="#addContactButtonClicked" text="_Add Contacts" GridPane.halignment="CENTER" GridPane.rowIndex="3" GridPane.valignment="CENTER">
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding>
         <GridPane.margin>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </GridPane.margin>
      </Button>
      <Label id="remainingCharsLabel" fx:id="remainingChars" ellipsisString="" maxHeight="30.0" maxWidth="180.0" prefHeight="30.0" prefWidth="180.0" text="remaining chars: 0/x" textFill="LIME" textOverrun="LEADING_WORD_ELLIPSIS" visible="false" GridPane.columnIndex="1" GridPane.rowIndex="2">
         <GridPane.margin>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </GridPane.margin>
         <padding>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </padding>
         <opaqueInsets>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </opaqueInsets>
         <tooltip>
            <Tooltip text="Shows how many chars you can still enter in this message" wrapText="true" />
         </tooltip>
      </Label>
	</children>
</GridPane>