The WindowProxy screenX/screenY/outerWidth/outerHeight fields are
platform-independent longs, meaning the bitness of the system is not
taken into account. This is defined in WebIDL as "a signed integer type
that has values in the range [−2147483648, 2147483647]". This can be
represented with an i32 internally.
Additionally, the WebDriver specification says that we should accept
JSON Numbers as input. This means the input value can be either a float
or an integer. rustc_serialize handles this very badly and we first
need to extract the input as f64 because this is the most liberal type
(i.e. an integer can be coerced to a float without problem).
We then we cast the number to an i64 which trims off any decimals without
worrying that the number wraps. We then run bounds checks of an i32
and error if the number will not fit within the set range.
This patch expects the output from Marionette to be conforming.
MozReview-Commit-ID: CVdUZWh2t8X
--HG--
extra : rebase_source : 6780985703d5d5291eae508f9eb2fdec16c261cc
An explanation of the Mozilla Source Code Directory Structure and links to
project pages with documentation can be found at:
https://developer.mozilla.org/en/Mozilla_Source_Code_Directory_Structure
For information on how to build Mozilla from the source code, see:
https://developer.mozilla.org/en/docs/Build_Documentation
To have your bug fix / feature added to Mozilla, you should create a patch and
submit it to Bugzilla (https://bugzilla.mozilla.org). Instructions are at:
https://developer.mozilla.org/en/docs/Creating_a_patch
https://developer.mozilla.org/en/docs/Getting_your_patch_in_the_tree
If you have a question about developing Mozilla, and can't find the solution
on https://developer.mozilla.org, you can try asking your question in a
mozilla.* Usenet group, or on IRC at irc.mozilla.org. [The Mozilla news groups
are accessible on Google Groups, or news.mozilla.org with a NNTP reader.]
You can download nightly development builds from the Mozilla FTP server.
Keep in mind that nightly builds, which are used by Mozilla developers for
testing, may be buggy. Firefox nightlies, for example, can be found at:
https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/
- or -
https://nightly.mozilla.org/