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Sam 7ab5b4a170 servo: Merge #14141 - Implement home end key scrolling (from samuknet:home-end-key-scroll2); r=glennw
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* Refactor all scroll related code to use a new `ScrollLocation` struct which can either be a `delta` (as before) or a `Start` or `End` request, to represent the desire to scroll to the start and end of the page.
Effectively, everywhere a delta was used, there is now a `ScrollLocation` struct instead.

* Add key press listeners for HOME and END keys so as to cause a scroll to be queued with `ScrollLocation::Start` (in HOME case) or `ScrollLocation::End` (in END case).

* These changes depend on added support for the new `ScrollLocation` in webrender and webrender_traits. See https://github.com/servo/webrender/pull/540.

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<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ x] These changes fix #13082 (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because scrolling I/O

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Source-Repo: https://github.com/servo/servo
Source-Revision: 1706ffd6e5a02f26f69970b3b41536a8a85ef6fe
2017-01-23 07:26:00 -08:00
servo servo: Merge #14141 - Implement home end key scrolling (from samuknet:home-end-key-scroll2); r=glennw 2017-01-23 07:26:00 -08:00