Viewport

java.lang.Object
- org.opt4j.viewer.Viewport

```
public class Viewport
extends Object
```
The Viewport is a desktop for Widgets.

See Also:

Widget

Field Summary

Fields
Modifier and Type Field Description

protected JDesktopPane desktop

protected static int OFFSET

protected JPanel panel

protected Map<Widget,JInternalFrame> widgets

Constructor Summary

Constructors
Constructor Description

Viewport()
Constructs a Viewport for Widgets.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addToDesktop(JInternalFrame inFrame)`	Adds a `JInternalFrame`.
`void`	`addWidget(Widget widget)`	Adds a widget.
`protected JInternalFrame`	`createInternalFrame(Widget widget)`	Creates a widget as a `JInternalFrame`.
`JComponent`	`get()`	Returns the component.
`JInternalFrame`	`getInternalFrame(Widget widget)`	Returns the `JInternalFrame` of a `Widget` if it exists and `null` otherwise.
`void`	`init()`	Initialization.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - desktop
```
protected final JDesktopPane desktop
```
  - panel
```
protected final JPanel panel
```
  - OFFSET
```
protected static final int OFFSET
```
    See Also:
    
    Constant Field Values
  - widgets
```
protected final Map<Widget,JInternalFrame> widgets
```
- Constructor Detail
  - Viewport
```
public Viewport()
```
    Constructs a Viewport for Widgets.
- Method Detail
  - init
```
public void init()
```
    Initialization. This method has to be called once after construction.
  - addWidget
```
public void addWidget(Widget widget)
```
    Adds a widget.
    
    Parameters:
    
    widget - the widget to be added
  - createInternalFrame
```
protected JInternalFrame createInternalFrame(Widget widget)
```
    Creates a widget as a JInternalFrame.
    
    Parameters:
    
    widget - the widget
    
    Returns:
    
    the constructed JInternalFrame
  - addToDesktop
```
public void addToDesktop(JInternalFrame inFrame)
```
    Adds a JInternalFrame.
    
    Parameters:
    
    inFrame - the JInternalFrame to be added
  - getInternalFrame
```
public JInternalFrame getInternalFrame(Widget widget)
```
    Returns the JInternalFrame of a Widget if it exists and null otherwise.
    
    Parameters:
    
    widget - the widget
    
    Returns:
    
    the internal frame
  - get
```
public JComponent get()
```
    Returns the component.
    
    Returns:
    
    the component