Shell

BShell class

class [BShell]{#BShell data-4search="ui/b/shell.js:BShell;class"} : …

[**`piano_roll`**]{#piano_roll data-4search="ui/b/shell.js:piano_roll;func"} `()`
:   Access PianoRoll component

[**`show_spinner`**]{#show_spinner data-4search="ui/b/shell.js:show_spinner;func"} `()`
:   Show spinner to indicate "busy" state (increment reason)

[**`hide_spinner`**]{#hide_spinner data-4search="ui/b/shell.js:hide_spinner;func"} `()`
:   Hide spinner to indicate "busy" state (decrement reason)