The WebExtension overflow list is created lazily because the panel itself is lazy, and only gets
inserted the first time it is needed. Originally, I had written a separate function `#getWebExtList()`
to do the work of forcing the WebExtension overflow list to de-lazify, and then hold a reference
to it in #webExtList.
It turns out, that's a bit of a footgun. More than once, I've used #webExtList directly, forgetting
that the value might turn out to be `null` because the list hasn't delazified yet.
In order to smooth out that rough edge, this patch makes `#webExtList` a memoizing (evalutes once,
caches the return value for subsequent calls) getter so that anything that uses it doesn't have
to worry about the lazification. The reference member is now called #webExtListRef, and I've
added documentation about how it's probably best not to use it directly.
Differential Revision: https://phabricator.services.mozilla.com/D162585
Long ago, the menu panel in was a customizable area that users could drag things into.
That changed back around 2017 in bug 1354117 when the Photon redesign was built. The
menu panel become a static menu, but we also made it possible to permanently move things
to the overflow panel of the nav-bar.
It looks like we never updated the area type constant from referring to the old menu panel
though, so it's "TYPE_MENU_PANEL", and registering a node for it happens with
registerMenuPanel. This patch changes to constant to TYPE_PANEL and updates the registration
method to registerPanelNode.
I a check around the codebase as well as GitHub looking to see if there were any
system add-ons or experimental WebExtensions that rely on TYPE_MENU_PANEL / registerMenuPanel,
but I couldn't find any.
Differential Revision: https://phabricator.services.mozilla.com/D161078
This property, along with the CustomizableUI.isWebExtensionWidget, will make it possible
to distinguish WebExtension-provided widgets without sniffing CSS classes, which is what
we currently do.
In the event that the widget has been destroyed or hasn't yet been created, this will
fallback to looking for the `-browser-action` suffix on the ID. This is mainly for use during
migrations which happen early during CustomizableUI startup, when it's unlikely that the
extensions have finished initializing themselves and creating their widgets yet.
Differential Revision: https://phabricator.services.mozilla.com/D160802
When Unified Extensions is enabled, we want to make it so that any WebExtension browser_actions
overflow into the Unified Extensions panel instead of the default overflow panel.
Depends on D160292
Differential Revision: https://phabricator.services.mozilla.com/D160293
When Unified Extensions is enabled, we want to make it so that any WebExtension browser_actions
overflow into the Unified Extensions panel instead of the default overflow panel.
Differential Revision: https://phabricator.services.mozilla.com/D160293
When Unified Extensions is enabled, we want to make it so that any WebExtension browser_actions
overflow into the Unified Extensions panel instead of the default overflow panel.
Differential Revision: https://phabricator.services.mozilla.com/D160293
These don't work on emulated flexbox. We only have a couple of uses.
See D159726 for the diagnostic patch I used to catch these.
Differential Revision: https://phabricator.services.mozilla.com/D159727
These don't work on emulated flexbox. We only have a couple of uses.
See D159726 for the diagnostic patch I used to catch these.
Differential Revision: https://phabricator.services.mozilla.com/D159727
Gijs for front-end bits, layout for the new CSS properties and the
removal of nsDeckFrame / nsStackLayout, Jamie and Morgan for the a11y
changes.
As discussed in the bug, the main tricky part here is handling a11y
correctly. For <deck>, that's trivial (just use `visibility: hidden` to
hide the panels visually, while removing the unselected panels from the
a11y tree).
For <tabpanels> however we need to do something special. We do want to
hide stuff visually, but we want to preserve the contents in the a11y
tree.
For that, the easiest fix is introducing a new privileged CSS property
(-moz-subtree-hidden-only-visually), which takes care of not painting
the frame, but marks stuff offscreen in the accessibility tree. This is
not intended to be a property used widely.
Other than that, the changes are relatively straight-forward, though
some of the accessible/mac changes I could get a sanity-check on.
Differential Revision: https://phabricator.services.mozilla.com/D157875
Gijs for front-end bits, layout for the new CSS properties and the
removal of nsDeckFrame / nsStackLayout, Jamie and Morgan for the a11y
changes.
As discussed in the bug, the main tricky part here is handling a11y
correctly. For <deck>, that's trivial (just use `visibility: hidden` to
hide the panels visually, while removing the unselected panels from the
a11y tree).
For <tabpanels> however we need to do something special. We do want to
hide stuff visually, but we want to preserve the contents in the a11y
tree.
For that, the easiest fix is introducing a new privileged CSS property
(-moz-subtree-hidden-only-visually), which takes care of not painting
the frame, but marks stuff offscreen in the accessibility tree. This is
not intended to be a property used widely.
Other than that, the changes are relatively straight-forward, though
some of the accessible/mac changes I could get a sanity-check on.
Differential Revision: https://phabricator.services.mozilla.com/D157875
When these panels had arrows, I guess the bottomcenter topleft alignment
made sense so that you could precisely align the arrow, but that's not
what we do now.
Don't use bottomcenter / leftcenter / rightcenter, since we really want
the sides to align.
This shouldn't change behavior on any platform except Linux + Wayland,
where the alignment looks good now in the case of bug 1784876.
Differential Revision: https://phabricator.services.mozilla.com/D156099
When these panels had arrows, I guess the bottomcenter topleft alignment
made sense so that you could precisely align the arrow, but that's not
what we do now.
Don't use bottomcenter / leftcenter / rightcenter, since we really want
the sides to align.
This shouldn't change behavior on any platform except Linux + Wayland,
where the alignment looks good now in the case of bug 1784876.
Differential Revision: https://phabricator.services.mozilla.com/D156099
There's an infinite loop in this test in some environments, caused by
PanelMultiView's tree walker methods checking for width/height of all
focusable elements. Since the buttons in the test panel have no labels,
and in some conditions have no padding, they have 0 height, causing the
tree walker to fail to find a focusable element. The patch just gives
the buttons labels.
Differential Revision: https://phabricator.services.mozilla.com/D147201
