[nvda-addons] Re: Website specific nvda script?
- From: shaun everiss <sm.everiss@xxxxxxxxx>
- To: nvda-addons@xxxxxxxxxxxxx
- Date: Tue, 07 Oct 2014 20:44:04 +1300
I have never heard of sites doing that.
and a refreshing site refreshing all the time
will cause nvda or whatever to reread the site from the beginning.
I have seen sites like the nasa station site have
updating content that changes every few seconds and its impossible to read.
I am not sure if its possible to interact
directly with a website or any part of a system
even if you have a honest reason to do so.
Security wise, I am not sure if it can be done,
malwre people do this where a script can load
something else, etc so it can be done, but I don't know.
At 06:55 a.m. 7/10/2014, you wrote:
Hi all,
I'm working on a project for my job at my
college, and I was wondering if something
already exists for this or if it is something I will need to code manually.
We have some very poorly designed websites that,
while basically accessible, are a serious
challenge for the user to navigate.
Additionally, some of these websites have
information that update in real time, and the
user needs to become aware of these changes, but
may not need to hear all of the information.
They also may not need to be aware of all changes, but only some.
The user experience for this scenario would be
that on a webpage that has dynamically updating
content (via JavaScript or Ajax) that user would
be able to press a keystroke to hear a certain
object read aloud. For A very loose example,
suppose that you had a clock on a webpage that
updated in real-time. The user could press a
keystroke to have the clock read out loud. Let's
also say that every time the hour changes the
user needs to know (but not when the minute
changes), so NVDA would constantly monitor the
clock and when it saw a change in the hour it
would do something, for example, play a sound.
Let's assume that the clock is simply text and
that NVDA has to use python to perform some text
processing to determine when this change occurs.
That would allow the user to then press the
keystroke to hear the clock read out loud.
It is possible for me to locate the object in
question using the DOM or by simply using NVDA's object navigation capability.
Simply reading the object may be insufficient.
NVDA may, for instance, perform some
manipulation of the text before reading it
aloud. Using our Clock example, NVDA would have
to take "4:00p" and then it into "4 o'clock PM."
Or, perhaps NVDA takes some action on the user's
behalf when the keystroke is pressed. Again, a
very loose example would be pressing a specific
button on a webpage. Well designed websites may
create hotkeys, but as we know not all websites do.
The basic idea is that I want to be able to
interact with the webpage â read its contents
and interact with it controls from an NVDA
sscript within an addon. I also want the script
to only work on certain pages, because obviously
the DOM will be different per page and therefore
many of the Scripts commands will not work On
other pages. This gives me access to the
powerful python environment for things such as string processing.
The question therefore is twofold:
1. Can NVDA access a webpage DOM from within an
add on? Also, can NVDA directly interact with
the webpage on the users behalf? This might mean
clicking buttons or links, entering data into
fields, or even performing mouse over gestures.
2. Is it possible to create an addon that only
applies to a specific website or webpage?
The second task I could see being feasible even
if not inherently supported by simply writing a
browser add-on that could examine the URL and
look for Scripts in a directory that match it in
someway. This I would be able to do as I have
already done a lot of work with plugin based
apps in python. I was more wondering if
something has already been designed for this.
In an ideal world, all websites would be easy to
navigate and easily accessible. In the real
world, however, challenges such as these create
situations were using a website is so
challenging and frustrating that it discourages
the users. If there are other alternatives that
did not involve asking the webmaster to change
the site, I would also entertain ideas there.
I'm also not worrying about the fact that
websites change. If that happens, it is
understood that scripts will need to be updated
to reflect this. Similarly to how if an
application is updated scripts must also be changed.
Note that The examples I gave are not the real
project, but were merely for illustrative
purposes. (Therefore, (This isn't meant to be
rude,) no "this is how to do an hourly chime on
the clock in Nvda" replies please. :-) )
Any advice about this situation would be greatly appreciated!
Thanks!
Flint
Sent from my
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