[REBOL] Re: Newbie script: A Rebol web browser - help please
From: ryanc:iesco-dms at: 10-Jan-2002 9:52
You might check out the web browser I made a while back ago to get an
understanding of just how big a web browser project is. I concluded doing
it right is a big project, even for a text only browser.
I think the trick to doing it is to have the display code largely
seperated from the html parsing code--unlike mine. Three step conversion,
html to document object model (DOM) to viewer. I would expect most
browsers these days work that way as well. Once you have the dom mapped,
the display part is straight forward.
Carl Read wrote:
> On 10-Jan-02, Scott Rebol wrote:
> > In View goto:
> > http://www.mindnexus.com/rebol/gecko11.r
> > Currently I have a hardcoded home page and a location
> > box that allow you to put in a url with an external
> > document that is basically a view layout.
> > The external layout loads into a pane of a fixed with
> > browser window.
> > http://www.mindnexus.com/rebol/vid1.txt
> > http://www.mindnexus.com/rebol/vid4.txt
> > http://www.mindnexus.com/rebol/vid4a.txt
> > Are my "web" documents.
> > Note: I currently only have hyperlinks working as
> > buttons.
> Anton showed you how to have text hyperlinks, but note there's
> currently no easy way in View to have a hyperlink within plain text.
> (Just to stop you wasting a lot of time looking for something that's
> not there.) Some on the list here have been developing ways to do
> this though, if my memory serves me right.
> > And when you use them it doesn't update the
> > loction bar.
> That's easy to do...
> view layout [
> f: field "Initial text"
> button "Change Text" [clear f/text append f/text "New text" show
> button "Append Text" [append f/text " more" show f]
> button "Clear Text" [clear f/text show f]
> > But still there is a lot of fuctionality
> > for 1.19 KB of code.
> > Next step is building a script that converts HTML to
> > rebolview layout,
> Why would you want to do this? I can think of lots of answers, but if
> it's to try and convert any webpage to a View layout then you have
> your work cut out for you. There is a simple Web-browser written in
> View though - see it on the FX5 Rebsite (via Sites in the View
> If it's to convert your own HTML though, then that's a different
> matter - you're in control of everything, which makes things easier.
> Using REBOL's parsing ability would be the way to go - see the Core
> Guide chapter on parsing. (Don't expect to learn it in five minutes
> though - you may be trying to run before you can walk here.)
> One possible approach for you would be to first use 'to-block on your
> webpage. This will create a block where the html tags have been
> converted into REBOL's tag datatype and the rest of the stuff in the
> page into various other datatype forms - some will be words, others
> string, and so on. (You may get an error with this though, as
> 'to-block can't handle everything you throw at it.) You could then
> use 'parse (and the rules you've created for 'parse to use) to
> convert the block into your layout. Not as easy as it sounds, but
> there'd be many hours of fun for you trying to get it to work. (:
> > Does anyone have open code that does
> > this. Or if not does anyone have an example of a file
> > format converter I can study.
> > Also if people could post rebol layout files on
> > otherservers could they send me url. So I can test
> > that this works across webservers.
> The way you've done it would work across the Net. As long as you use
> a full URL and the file's there, a REBOL script can grab it and use
> Carl Read
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The contradiction so puzzling to the ordinary way
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which in its very nature transcends lingistics.