1908742 - Add ability to expand moz-card accordion by default

Status: RESOLVED FIXED

(Toolkit :: UI Widgets, enhancement, P2)

Description

[Jonathan Sudiaman [:jsudiaman]]

Current behavior of <moz-card type="accordion">:

The "accordion" type will initially not show any content. The card will contain an arrow to expand the card so that all of the content is visible.

It may be useful to have content that is collapsible, but with the card initially expanded and showing content to begin with. I noticed there is an expanded property, but it doesn't appear to be utilized.

Comment 1

[Sarah Clements [:sclements]]

Once we have this capability we'll want it added to the history and synced tabs in the sidebar so that the first two cards are open by default.

Comment 2

[Tim Giles [:tgiles]]

Attachment: Bug 1908742: Allow moz-card to be expanded by default. r=#recomp-reviewers

This change allows a developer to use the "expanded" attribute to force
an accordion card to be open on initial render. Additionally, one can
listen and check the "expanded" attribute to be sure of the card's
inner state.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/597f793dec3c
Allow moz-card to be expanded by default. r=reusable-components-reviewers,hjones

Comment 4

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/597f793dec3c