If a widget gains a layout manager after it already has child widgets,
the existing widgets are unknown to the layout. Additionally, if a
layout is reused, it may end up managing children of multiple different
widgets.
To simplify this, clear the entries of a layout manager when its owner
changes, and add any existing children when a new owner comes along.
Now that number systems are generated as an enum, we can generated the
number system data in the order of that enum. This lets us perform
lookups of that data by index instead of a loop of string comparisons.
We had a hard-coded table of number system digits copied from ECMA-402.
Turns out these digits are in the CLDR, so let's parse the digits from
there instead of hard-coding them.
The following table in TR-35 includes a web of fall back rules when the
requested time zone style is unavailable:
https://unicode.org/reports/tr35/tr35-dates.html#dfst-zone
Conveniently, the subset of styles supported by ECMA-402 (and therefore
LibUnicode) all either fall back to GMT offset or to a style that is
unsupported but itself falls back to GMT offset.
This adds an API to use LibTimeZone to convert a time zone such as
"America/New_York" to a GMT offset string like "GMT-5" (short form) or
"GMT-05:00" (long form).
There are a few algorithms in TR-35 that need to replace digits before
returning any results to callers. For example, when formatting time zone
offsets, a string like "GMT+12:34" must have its digits replaced with
the default numbering system for the desired locale.
Previously, we were expecting triangles and quads to consist of
complete sets of vertices. However, a more common behavior is to ignore
all vertices that do not make up a full primitive. For example, OpenGL
specifies for `GL_QUADS`:
"The total number of vertices between Begin and End is 4n + k, where
0 ≤ k ≤ 3; if k is not zero, the final k vertices are ignored."
This changes the behavior of `Device::draw_primitives()` to both return
early if no full set of vertices was provided, and to ignore any
additional vertices that are not part of a full set.
Allow `Matrix::inverse()` to return an error and deal with those in
LibGL. Also use this opportunity to more efficiently calculate the
transpose of the model view matrix for the normal transformation.
We can now recognize & normalize all time zones from the IANA time zone
database and not just 'UTC', which makes the LibJS Temporal
implementation a lot more useful! Thanks to the newly added LibTimeZone,
this was incredibly easy to implement :^)
This already includes these recent editorial changes in the Temporal
spec: 27bffe1
Instead of only having dummy functions that don't work with any input,
let's at least support one time zone: 'UTC'. This matches the basic
Temporal implementation for engines without ECMA-262, for example.
Previously parse_time_zone_numeric_utc_offset_syntax() would return true
to indicate success when parsing a string with an invalid number of
digits in the fractional seconds part (e.g. 23:59:59.9999999999).
We need to check if the lexer has any characters remaining, and return
false if that's the case.
This commit extracts out the GUI initialization in AudioWidget into
the new try_initialize_graphical_elements function. This function
is now able to use try_set_main_widget instead of set_main_widget.
It's only called by the fallible try_create method.
