Module rich_text_line 

A single editable line of text wrapping a local-mode TextInput, the leaf cell of a block editor. The inner TextInput handles cursor placement, selection, IME, copy/paste; RichTextLine adds:

• Intercepts Enter, Backspace at byte 0, Up at the start, and Down at the end before the inner input sees them, queuing LineSignals the parent (crate::widget::block_editor::BlockEditor) consumes instead.
• A per-line font size so a block editor can render H1/H2/H3 headings without forking the widget.
• A MarkSpan list (inline bold/italic/code/link) with rendering and Ctrl-B/I/E toggling built on the inner TextInput’s selection range.

Structs

DeclaredLine

A rich text line driven from a view: what it types edits the bound text, and the keys that leave the line reach the view’s events.

RichTextLine

RichTextLineProps

One line of text, edited in place: a block editor’s cell, a composer’s message. It carries its text and its inline marks, and reports the keys that would carry the edit out of the line itself (Enter, Shift+Enter, Backspace at the start), so a host composing several lines can split or join them.

TransientColorSpan

A presentation-only syntax colour over a byte range of the line, painted from the theme’s SyntaxPalette and never written to the document.

Enums

LineSignal

Emitted when a key would carry the edit out of the line itself; the parent (a BlockEditor) drains these via RichTextLine::take_signal.

Functions

link_at_byte

Used by MainPanel::handle_event to route clicks on link spans to the page-navigation handler.