# Graphics
**Contents**
* [class HomeButton](#class-HomeButton)
* [class HomeDisplay](#class-HomeDisplay)
* [class TrickSimMode](#class-TrickSimMode)
---
## class homeButton
extends [JPanel](https://docs.oracle.com/javase/7/docs/api/javax/swing/JPanel.html)
implements [ActionListener](https://docs.oracle.com/javase/10/docs/api/java/awt/event/ActionListener.html)
### Description
The HomeButton class represents a graphical button in an [HomeDisplay](#class-HomeDisplay). It utilizes ActionListener to record user input to the button.
| Access | Member Name | Type | Units | Value |
|---------|---------------|--------------|--------|--------|
| private | homeButton1 |JButton | -- | |
| private | homeCommand |boolean | -- | |
| private | label |JLabel | -- | |
### Constructor
```
public HomeButton();
```
Constructs the button with the appropriate label and adds it to the JPanel.
### Member Functions
```
public void actionPerformed(ActionEvent e);
```
Utilizes the ActionListener and record the user input in the form of a boolean variable homeCommand.
```
public void resetHomeCommand();
```
Resets the homeCommand variable to false.
```
public void getHomeCommand();
```
Returns the value of homeCommand.
---
## class TrickSimMode
### Description
The TrickSimMode class declares variables for the state of the simulation.
## class HomeDisplay
extends [JFrame](https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/JFrame.html)
### Description
This class implements a Trick variable server client application for SIM_wheelbot that displays the homing button.
#### Running the Client
```
java -jar HomeDisplay.jar
```
| Access | Member Name | Type | Units | Value |
|--------|-----------------|----------------- |--------|--------|
| private | buttonPanel | HomeButton | -- | |
| private | in | BufferedReader | -- | |
| private | out | DataOutputStream | -- | |
### Constructor
```
public HomeDisplay();
```
Initialize an JFrame with the HomeButton class.
### Member Functions
```
public void resetHomeCommand();
```
Extension of the resetHomeCommand function found in the HomeButton class.
```
public void getHomeCommand();
```
Extension of the getHomeCommand function found in the HomeButton class.
```
public void connectToServer(String host, int port );
```
Connect to the Trick variable server as specified by **host** and **port**.
```
private static void printHelpText();
```
```
public static void main(String[] args);
```
* Process Args
* Validate Parameters
* Initialize HomeDisplay GUI
* Connect to the Trick variable server on the local computer ("localhost") at the port number specified by the applicaton arguments.
* Request the vehicle home variable and simulation mode.
* Enter a continuous while loop that reads, and correspondingly sets the vehicle state.
---