Jonathan Slenders wrote:
You're right there. Copying is no problem, but pasting is. I don't
know how often you paste Python code in an interactive terminal, but
you should do it literally line by line because of the extra empty
line required in the console to close a definition. So, I don't think
it's really that important.
I'm forever pasting into consoles... But that aside, both you and Jimmy
make some very good suggestions.
If you're interested. The link below is a Vi prototype in the browser
written in Javascript. (I hope, you know the basics of Vi, to test it
:) )
Yep - it feels very broken, which has always been my experience when
working with Vi... :-)
Michael
From what I remember, it doesn't use a text area, just HTML markup.
(It does syncs the content to a text area however, for submitting the
form.)
http://gpl.internetconnection.net/vi/
Jonathan
2008/6/19 Michael Foord <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>:
Hello all,
Thanks Jonathan. The approach you suggest has several great
advantages. The disadvantages are that you lose the ability to
copy and paste (I think most browsers forbid you from manipulating
the clipboard from Javascript unless the user has fiddled with
some obscure settings).
For the first release I'll stick with a textarea but I'll
prototype your suggestion for the next release and see what I think.
Michael Foord
Jonathan Slenders wrote:
2008/6/18 Michael Foord <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>:
Jimmy Schementi wrote:
Michael, question for you:
On every keypress Javascript calls into IronPython (via
the C#!).
How come you used C# to handle the onkeypress event? This
should do it in Python:
Did you look at the code to see why? I'd be really
interested to
know if I can do what I'm doing from Python inside Silverlight,
but I doubt it. There's not much code in total, so it should be
easy to follow.
I actually handle the onkeypress event from Javascript
(onkeypress.js). This calls into 'getSelection'
(cursor_pos.js) to
work out the current selection in the textarea. Naturally
this is
easy to do in Firefox / Safari and scarily awful in IE. :-)
Having worked these out (and shortcut a few specific
scenarios -
like ctrl-A, ctrl-Z and ctrl-C), the Javascript then calls into
IronPython with the selection start, selection end, and the
character that was pressed. I use C# to expose a scriptable
type
that Javascript can call.
I use attaching events from Python to provide the sample code.
There are three links above the console and Python handles the
'onclick' event to swap the examples around.
I think Jimmy is right here. And the parts you did in
javascript, could also be done in Silverlight. Some
suggestions how I would do this:
- instead of a text area, I'd use a html <div> , with CSS
"overflow: auto;" for the scrollbars.
- insert a <p> tag for each line into the <div>.
- capture the body.onkeypress events for input
- keep a textinput buffer in IronPython, but show the last
line by copying it on each keypress to the last <p>
- The cursor could be <span>, styled in CSS to show a pinking
cursor.
- handle the left/right arrows to shift the cursor
- handle the up/down arrows to replace the last <p> with the
second last executed command
- on a "enter" press, process that line.
- when using a <div>, it's even very easy to do syntax
highlighting on the fly. Surround known keywords by a <span
class="keyword"> and style them.
That shouldn't be too hard to do. But you should decide
whether it's necessary to have this all in IronPython.
Probably, it's the cleanest way to do it.
Jonathan
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