Setting onreadystatechange can avoid the possibility of it somehow being
called twice but there's no point in nulling the request right before we
let the GC collect it.
* Since async is always true – and browsers are starting to deprecate
synchronous XHR – we were able to prune considerable amount of code
* Add an error callback to match the existing success callback
Previously `request.onreadystatechange` was assigned an empty function
on success but null on failures, which breaks in IE (see
http://jsbin.com/ezozax/6/).
This patch simply mimics the success behaviour in the cleanup function
Closes#143
This previously wasn't in scope outside of the main OpenSeadragon
closure. Now it's exposed with an underscore prefix to encourage people
not to think of it as a public interface.
Mostly unused function arguments but there were also a fair number
of legacy names which are now no longer used.
One question which comes up – mostly in tilesource.js – is whether
there is any value in leaving unused variables for functions which
are intended to be overridden anyway. I'm inclined to say that the
docs + tests need to be sufficient as there's no enforcement that
whatever is in the base implementation will actually be followed by
any of the real functions.
This simplifies setElementOpacity by removing support for the
obsolete, IE-only element.filters property. Also removes a variable
that previously leaked into the global scope.
Very old versions of Firefox - e.g. Firefox 7 - have
window.requestAnimationFrame but not cancelAnimationFrame. This is a
very old release so the easiest fix is simply to check for both of the
functions which we intend to call and fall back on traditional behaviour
if both aren't present.
The license text will be provided on the website, etc., and it seems
strange to list no copyright date newer than the original CodePlex
copyright from the AJAX Control Toolkit. Add a blanket copyright
statement for contributions to the OpenSeadragon project, stating that
copyright is held by the authors of each contribution. This blanket
statement is not intended to preclude individual contributors from
attaching their own copyright statements to their modifications.
for code taken from jQuery and from mattsnider.com.
Ideally we'd keep the MIT-licensed helper code in a separate file,
but it proved difficult to extricate from the rest of openseadragon.js.
Also remove comment about plagiarism. It's not plagiarism if it's
attributed and properly licensed.
All OpenSeadragon contributors have granted their permission for this
relicensing in #58.
Drop copyright statements for Ian Gilman and Christopher Thatcher as
they requested in #10.
Revert CodePlex Foundation copyright date to 2009 pursuant to discussion
in #10.
