MainFrame

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riso.general
Class MainFrame

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Window
              java.awt.Frame
                  riso.general.MainFrame

All Implemented Interfaces:: javax.accessibility.Accessible, java.applet.AppletContext, java.applet.AppletStub, java.awt.image.ImageObserver, java.awt.MenuContainer, java.lang.Runnable, java.io.Serializable

public class MainFrame
extends java.awt.Frame
implements java.lang.Runnable, java.applet.AppletStub, java.applet.AppletContext

Run an Applet as an application. This class was written by Jef Poskanzer, and it is redistributed as part of the RISO project under the terms stated in the comments of the source file.

Using this class you can add a trivial main program to any Applet and run it directly, as well as from a browser or the appletviewer. And unlike some versions of this concept, MainFrame implements both images and sound.

Sample main program:

 public static void main( String[] args )
     {
     new Acme.MainFrame( new ThisApplet(), args, 400, 400 );
     }

The only methods you need to know about are the constructors.

You can specify Applet parameters on the command line, as name=value. For instance, the equivalent of:

 <PARAM NAME="pause" VALUE="200">

would just be:

 pause=200

You can also specify three special parameters:

 width=N          Width of the Applet.
 height=N         Height of the Applet.
 barebones=true   Leave off the menu bar and status area.

Fetch the software.
Fetch the entire Acme package.

Field Detail

args

private java.lang.String[] args

instances

private static int instances

name

private java.lang.String name

barebones

private boolean barebones

applet

private java.applet.Applet applet

label

private java.awt.Label label

appletSize

private java.awt.Dimension appletSize

PARAM_PROP_PREFIX

private static final java.lang.String PARAM_PROP_PREFIX

See Also:: Constant Field Values

Constructor Detail

MainFrame

public MainFrame(java.applet.Applet applet,
                 java.lang.String[] args,
                 int width,
                 int height)

MainFrame

public MainFrame(java.applet.Applet applet,
                 java.lang.String[] args)

MainFrame

public MainFrame(java.applet.Applet applet,
                 int width,
                 int height)

Method Detail

build

private void build(java.applet.Applet applet,
                   java.lang.String[] args,
                   int width,
                   int height)

parseArgs

private static void parseArgs(java.lang.String[] args,
                              java.util.Properties props)

handleEvent

public boolean handleEvent(java.awt.Event evt)

Description copied from class: java.awt.Component

AWT 1.0 event handler. This method calls one of the event-specific handler methods. For example for key events, either Component.keyDown(Event,int)>Component.keyDown(Event,int) 55 or Component.keyUp(Event,int)>Component.keyUp(Event,int) 55 is called. A derived component can override one of these event-specific methods if it only needs to handle certain event types. Otherwise it can override handleEvent itself and handle any event.

run

public void run()

Description copied from interface: java.lang.Runnable

This method will be called by whoever wishes to run your class implementing Runnable. Note that there are no restrictions on what you are allowed to do in the run method, except that you cannot throw a checked exception.

Specified by:: run in interface java.lang.Runnable

isActive

public boolean isActive()

Description copied from interface: java.applet.AppletStub

Tests whether or not this applet is currently active. An applet is active just before the browser invokes start(), and becomes inactive just before the browser invokes stop().

Specified by:: isActive in interface java.applet.AppletStub

getDocumentBase

public java.net.URL getDocumentBase()

Description copied from interface: java.applet.AppletStub

Returns the basename URL of the document this applet is embedded in. This is everything up to the final '/'.

Specified by:: getDocumentBase in interface java.applet.AppletStub

getCodeBase

public java.net.URL getCodeBase()

Description copied from interface: java.applet.AppletStub

Returns the URL of the code base for this applet.

Specified by:: getCodeBase in interface java.applet.AppletStub

getParameter

public java.lang.String getParameter(java.lang.String name)

Description copied from interface: java.applet.AppletStub

Returns the value of the specified parameter that was specified in the <APPLET> tag for this applet.

Specified by:: getParameter in interface java.applet.AppletStub

appletResize

public void appletResize(int width,
                         int height)

Description copied from interface: java.applet.AppletStub

Requests that the applet window for this applet be resized.

Specified by:: appletResize in interface java.applet.AppletStub

getAppletContext

public java.applet.AppletContext getAppletContext()

Description copied from interface: java.applet.AppletStub

Returns the applet context for this applet.

Specified by:: getAppletContext in interface java.applet.AppletStub