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List:       kde-devel
Subject:    Design of an application, HELP!
From:       Pupeno <pupeno () pupeno ! com>
Date:       2004-05-31 19:21:11
Message-ID: 200405311621.17549.pupeno () pupeno ! com
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I'm developing an application to do graphically, what tail -f does on the 
console. For those of you that doesn't know what tail -f does, it shows the 
last N lines of a text file (plain tail) and then keeps waiting for lines to 
be appended and when they appear, it shows them immediatly on the screen.
I'm doing the same as graphic application, except that I want to acomplish a 
bit more:
1) Design a library that others can use in their KDE application.
2) Create a KDE application (the initial prototype is working), a Konqueror 
KPart and a KDevelop KPart around that library.

Now, my last goal is to be able to open more than one file and show it mixed 
in the screen (with the file name as prefix, for instance), do some filtering 
(avoiding lines containing this or not containing that... of course, regular 
expressions), do some highlighting (highlight this or that to bold or italics 
or color, or highlight a line containing this or that to bold or italics or 
color).
I also want to be able to save and open profiles, a profile will be a set of 
files with a set of filters and a set of highlights, so, you can have your 
last wroking file watch just opening the saved profile.

Now, I'm not sure in how many separate components I have to break my system to 
make it easily extensible.
Currently, it has a class KFileWatcher which is a QWidget that also handles 
all the backends.
Should I separate it in a backend and a front end... KFileWatcher and 
KFileWatcherView ? where should the filtering and the highlighting go ? what 
about multiple files ?
Maybe KFileWatcher (backend) should accept setting more than one file to 
watch, setting filters per file or globally and setting highlightings per 
file or globally and then, also, saving and opening those profile from HD or 
at least, saving and opening those profiles to QStrings (XML or whatever).
What do you think ?
Thanks.
- -- 
Pupeno: pupeno@pupeno.com - http://www.pupeno.com
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