We have a number of base-classes that are only intended to be extended, but never to be used directly. To help enforce this during development these base-class constructors will check for direct usage, however that code is obviously not needed in the actual builds.
*Note:* This patch reduces the size of the `gulp mozcentral` output by `~2.7` kilo-bytes, which isn't a lot but still cannot hurt.
Secondary toolbar buttons are toolbar buttons with some extra rules,
mainly to make them wider and have visible labels. However, this
similarity is currently not clearly reflected in the implementation
because the secondary toolbar buttons use a different CSS class,
`secondaryToolbarButton`, compared to the other toolbar buttons that
use the `toolbarButton` CSS class. This also causes some duplication
in the rules and requires extra care to keep the common bits for the
`secondaryToolbarButton` class in sync with the `toolbarButton` class.
Fortunately, now that we have a dedicated CSS scope for the secondary
toolbar, we can simplify this by giving all secondary toolbar buttons
the `toolbarButton` class and explicitly listing the required overrides
in the `#secondaryToolbar` scope instead. Doing so removes most of the
special-casing for secondary toolbar buttons while explicitly listing
the differences in a single place for a better overview. It also lays
the foundation for making all toolbar buttons respect the
`browser.uidensity` Firefox preference later by reducing differences.
Co-authored-by: Calixte Denizet <calixte.denizet@gmail.com>
The secondary toolbar CSS rules predate the general availability of CSS
nesting, which makes them more difficult to understand and change
safely. The primary issues are that the rules are spread over the
`viewer.css` file, they share blocks with other elements and the scope
of the rules is sometimes bigger than necessary.
This refactoring groups all CSS rules for the secondary toolbar button
container/icons together, scoped to the top-level `#secondaryToolbar`
element, for improved overview and isolation. Note that this patch only
intends to move the existing rules around and not change any behavior.
Moreover, this patch does not move the rules for the secondary toolbar
itself and the secondary toolbar buttons; those will be part of a
follow-up patch and will be easier once this is in place first.
Co-authored-by: Calixte Denizet <calixte.denizet@gmail.com>
Because of an old oversight (by me) we don't stop sidebar resizing when the browser window loses focus, which seems generally wrong and can also lead to duplicate mouse-related event listeners being registered.
There's a fair number of event listeners in the editor-code that we're currently removing "manually", by keeping references to their event handler functions.
This was necessary since we have a "global" `AbortController` that applies to all event listeners used in the editor-code, however it's now possible to combine multiple `AbortSignal`s; please see https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/any_static
Since this functionality is [fairly new](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/any_static#browser_compatibility) the viewer will check that `AbortSignal.any()` is available before enabling the editing-functionality.
(It should hopefully be fairly straightforward, famous last words, for users to implement a polyfill to allow editing in older browsers.)
Finally, this patch also adds checks and test-only asserts to ensure that we don't add duplicate event listeners in various editor-code.
The findbar CSS rules predate the general availability of CSS nesting,
which makes them more difficult to understand and change safely. The
primary issues are that the findbar rules are spread all over the
`viewer.css` file, they share blocks with non-findbar elements and the
scope of the rules is sometimes bigger than necessary.
This refactoring groups all findbar-related CSS rules together, scoped
to the top-level `#findbar` element, for improved overview and
isolation. Note that this patch only intends to move the existing rules
around and not change any behavior yet, but it does lay the foundation
for e.g. making the findbar respect the `browser.uidensity` preference
in Firefox in follow-up work.
Co-authored-by: Calixte Denizet <calixte.denizet@gmail.com>
It looks like this has accidentally been copy/pasted from the
`Textfields and focus` block, which is the only one in which a test
actually uses it. We can therefore safely remove it from all other
blocks where no test uses it.
