Not sure if it will make much improvement in the ongoing discussion, but after
reading
Paul's proposed method I remembered about a page of mine. And yes, it was using
precisely that method, but with ctl.files.item(0).getAsBinary() rather than
ctl.files.item(0).getAsText('') --where "ctl" is a pointer to the file input
html object-- so it
works with gzipped files as well as with plain-text files. That is a
Firefox-only method, but it's
easy to branch the action for other browsers to just read the input field (see
example code at
the bottom). If should be straightforward to include this in a check routine
that will upload the
file only upon the user's acceptance of the Jmol display, and do so straight
from the input
type=file control (which, as I said, I believe is the only allowed method for
uploading files to
the server).
I am intrigued by Rob's indication that jmolLoadInline fails with some browsers
--could you
provide specific details? We should address that limitation.
I am seeing now that Chrome and Safari (Windows) have the same security
limitation as
Firefox on reading the value of input file, but cannot use the files.item()
method which works
for Firefox. More research needed :-(
---------
function displayModelJmol(ctl)
{ if ( ctl.files ) // for Firefox 3 security
{ jmolLoadInline(ctl.files.item(0).getAsBinary())
}
else
{ jmolScript('load "' + ctl.value + '";')
}
}
<form>
<input type="file" name="model">
<input type="button" value="accept" onClick="displayModelJmol(this.form.model)">
<!-- it could also be called in onChange of the input control -->
</form>
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