Package vrml.eai

Interface BrowserFactoryImpl

All Known Implementing Classes:

NetworkBrowserFactoryImpl, VRMLBrowserFactoryImpl, VRMLOGLBrowserFactoryImpl

public interface BrowserFactoryImpl

The factory implementation interface for obtaining references to browser instances.

Any implementation of a VRML browser that wishes to provide their own customized version of the browser factory should must subclass this class. In particular this is useful if the implementation needs to stay within the package defined by the application for other reasons.

A default implementation of this class is the DefaultBrowserFactoryImpl which is package access only.

Version:

1.1 29 August 1998

Method Summary

Modifier and Type	Method	Description
VrmlComponent	createComponent(String[] params)	Create a VRML browser that can be used as an AWT component.
Browser	getBrowser(Applet applet)	Get a browser from the given java applet reference as a base in the current HTML page.
Browser	getBrowser(Applet applet, String frameName, int index)	Get a browser from the given java applet reference one some named page and at some embed location.
Browser	getBrowser(InetAddress address, int port)	Get a reference to a browser that is located on a remote machine.

Method Details

createComponent

VrmlComponent createComponent(String[] params)
                       throws NotSupportedException

Create a VRML browser that can be used as an AWT component. The component returned is guaranteed to be an instance of VrmlComponent.

Parameters:

params - Parameters to control the look and feel.

Returns:

The component browser initialised to be empty.

Throws:

NotSupportedException - The implementation does not support this type of VRML browser.

See Also:

• VrmlComponent

getBrowser

Browser getBrowser(Applet applet)
            throws NotSupportedException,
NoSuchBrowserException,
ConnectionException

Get a browser from the given java applet reference as a base in the current HTML page. Used when attempting to access a browser on the current page as this applet and is the first browser on the page. Generically, the same as calling getBrowser(applet, "", 0);

Parameters:

applet - The applet reference to use

Returns:

A reference to the Browser implementation

Throws:

NotSupportedException - The implementation does not support this type of VRML browser

NoSuchBrowserException - Could not locate a VRML browser on the same page as the applet.

ConnectionException - An error occurred during the connecting process

getBrowser

Browser getBrowser(Applet applet,
 String frameName,
 int index)
            throws NotSupportedException,
NoSuchBrowserException,
ConnectionException

Get a browser from the given java applet reference one some named page and at some embed location. Used when attempting to access a browser on another HTML page within a multi-framed environment, or if there are a number of VRML browser instances located on the same page.

If the frame name is a zero length string or null then it is assumed to be located on the same HTML page as the applet. The index is the number of the embed VRML browser starting from the top of the page. If there are other non-VRML plugins embedded in the page these are not taken into account in calculating the embed index.

Parameters:

applet - The applet reference to use

frameName - The name of the frame to look into for the browser

index - The embed index of the VRML browser in the page

Returns:

A reference to the Browser implementation

Throws:

NotSupportedException - The implementation does not support this type of VRML browser.

NoSuchBrowserException - Could not locate a VRML browser on the same page as the applet.

ConnectionException - An error occurred during the connecting process

getBrowser

Browser getBrowser(InetAddress address,
 int port)
            throws NotSupportedException,
NoSuchBrowserException,
UnknownHostException,
ConnectionException

Get a reference to a browser that is located on a remote machine. This a server application to send scene updates to a number of client browsers located on remote machines. If there are a number of browsers running on a remote machine, they can be differentiated by the port number they are listening on.

There is no default port number for VRML browsers.

Parameters:

address - The address of the machine to connect to

port - The port number on that machine to connect to.

Returns:

A reference to the Browser implementation

Throws:

NotSupportedException - The implementation does not support this type of VRML browser.

NoSuchBrowserException - Could not locate a VRML browser on the same page as the applet.

UnknownHostException - Could not find the machine named in the address.

ConnectionException - An error occurred during the connecting process