Function: isStickyNote()

function isStickyNote(a): boolean;

Heuristic "is this Text a sticky note" check. Sticky notes are not a distinct annotation type - they're Text created via Control.enableStickyNoteDrawing() with defaultStickyNoteStyle (see api/drawing.ts) - so there is no dedicated marker to check yet.

Checks two of that preset's characteristic style values rather than just scaleFontOnResize alone: that flag's own doc comment above notes it's "only set by defaultStickyNoteStyle", but a host app is free to set it manually on a plain Text too, so pairing it with placeholder (which - unlike content - never gets cleared by typing) cuts down on that false-positive risk. Still a heuristic: a host that overrides styles.stickyNote.placeholder when calling enableStickyNoteDrawing/ AnnotationToolbar will miss here.

Kept as a single function (not inlined at each call site) so swapping in a dedicated marker later - e.g. a style.preset field - is a one-place change.

Parameters

a

Text

Returns

boolean