What I learned today:
* Window doesn't have a scrollTop property, body does (that's why animate
doesn't work on window)
* jQuery.scrollTop() doesn't work on body (in firefox) but works on
window everywhere
* jQuery.scrollTop() uses scroll offset, not the scrollTop property
* Body doesn't have an onscroll event, window does
What I really learned today:
* Browsers are very poorly designed
Objective:
* Make clippable elements properly resize in Firefox when scrolled
Diagnosis:
* Scroll events were not being emitted from the scrollable container
after the merge of Ifec0dae598f7fd99270588bd8ca77777a07e9669 because
such events are not emitted from body tags, only scrollable divs and
windows
* jQuery.scrollTop was giving incorrect values when called on the body
instead of the window, so also due to the aforementioned change, the
clipping was being calculated incorrectly
Treatment:
* Add $clippableScroller property, which is either a scrollable div or
the window (could this have side-effects if someone did something
ridiculous like made the body absolutely positioned and overflow:auto?
Yes, but I have no other option and that's a strange edge case don't
you think?)
* Use $clippableScroller for listening to scroll events and getting the
scrollTop value from jQuery
Bug: 55343
Change-Id: I819aba60b200059886b347115fda437b3dc9cb7a
Sometimes, .clip() would be called when clipping had already been
disabled again, and accessing this.$clippableContainer would cause
an error. This happened to me when typing quickly in MWLinkInspector.
This probably happens when enabling and disabling clipping right after
each other in response to the same event, such that the setTimeout()
for the initial clip is run after clipping has already been disabled.
Change-Id: I0f85ea5f10955188bae51160e1c88eca858ea1bf
Objectives:
* Scroll when needed to show highlighted (with keyboard) or selected (by
any means) options in select widgets
* Allow clipping and automatic scrolling for certain elements when they
are otherwise going to be rendered partially out of view
Changes:
*.php
* Add links to new file
ve.ui.Widget.css, ve.ui.Dialog.css
* Removed unneeded x-axis overflow rules
ve.ui.ClippableElement.js, ve.ui.Element.css
* New mixin, adds visible area clipping support to an element
ve.ui.PopupToolGroup.js, ve.ui.MenuWidget.js
* Mixin clippable element
ve.ui.OptionWidget.js, ve.ui.OutlineItemWidget.js
* Add scroll-into-view configuration for option widgets
ve.ui.SearchWidget.js
* Scroll items into view when highlighting with keyboard
ve.Element.js
* Add getBorders, getDimensions, getClosestScrollableContainer and
scrollIntoView static methods
* Add getClosestScrollableElementContainer and scrollElementIntoView
methods
Bug: 53610
Change-Id: Ie21faa973a68f517c7cfce8bd879b5317f536365
