Fix the icon button directionality in right-to-left languages.
Previously, the button was hardcoded to support left-to-right only.
- Replace the skin.vector.icons' `.mw-ui-icon-wikimedia-{name}:before`
`selector` in skin.json with a placeholder, `{name}`. I don't think
this selector should be needed but it seems to be erroneous not have
one. I believe this issue of wanting a null selector was encountered
in Minerva or MobileFrontend but am unable to locate the past
discourse.
- Add check and unchecked menu button selectors to skin.json that set
the appropriate background image. This shards some of the styles out
of Less and into ResourceLoader-land but it's worthwhile.
- Revise the name of horizontal collapse icon to describe its form not
function, "collapseHorizontal" to "chevronHorizontal". This has been
an established convention that was missed a couple patches back.
- Add a flipped chevronHorizontal for RTL. I used Inkscape to do the
flip and tried to match the style of the original by hand. Feel free
to edit further.
- Drop the now unnecessary icon flipping JavaScript and initial Mustache
class. This enables a real CSS-only solution for the icons.
Bug: T246419
Change-Id: I60f65b3c595bf18d309b667d9a0b066691b90c97
Add a menu button that toggles the panel's (also referred to as a
sidebar) collapse state. When the screen is wide enough, animate the
transition.
The menu icon from OOUI is copied into Vector to avoid two
ResourceLoaders modules (collapseHorizontal icon isn't ready for
inclusion in the OOUI icon pack and ResourceLoaderOOUIIconPackModule
doesn't support images).
Additional polish and collaboration is needed but this patch fulfills
the scope of its referenced task.
Bug: T246419
Depends-On: I8e153c0ab927f9d880a68fb9efb0bf37b91d26b2
Change-Id: Ic9d54de7e19ef8d5dfd703d95a45b78c0aaf791a
