Connecting to the WWW
introduction,
concepts,
components,
examples,
patterns,
experience,
conclusions,
references
In addition to the basic hypertext facility mentioned before,
the DejaVu framework also provides support
(in the form of the web widget)
for hypertext files written in HTML.
The web widget displays HTML files and allows for
following links defined by URLs.
In addition to the standard widget functions,
it offers a function loadhome, to load
a home page.
In a similar way as the basic hypertext widget,
the web widget allows for embedding
(Tcl) script code, by using the
special (non-HTML) tag hush,
as illustrated below:
<h1>Digital video for HushWWW</h1>
<hush tcl=source [urlfile www.cs.vu.nl/~se/mpeg.tcl>;
You need the hush browser to play this MPEG demo
</hush>
The actual script code itself may be obtained
from some site by using the special command
urlfile.
The text inbetween the hush begin and end tag
will be displayed by 'ordinary' browsers, such as Mosaic
and Netscape.
Evaluating the script code may, similar as
for the hypertext widget, result in packing
additional widgets to the browser (widget),
as for example a video widget showing an mpeg movie.
introduction,
concepts,
components,
examples,
patterns,
experience,
conclusions,
references