Struct SelectionState 

pub struct SelectionState {
    pub active: bool,
    pub range: Option<SelectionRange>,
    pub conversation_area: Rect,
    pub actual_scroll: usize,
    pub total_content_lines: usize,
    pub auto_scroll_direction: Option<i8>,
}

State for tracking an active text selection.

Fields

active: bool

Whether a selection is currently active (mouse button held).

range: Option<SelectionRange>

The current selection range (if any text is selected).

conversation_area: Rect

The conversation content area rect (set after each render).

actual_scroll: usize

The actual scroll position (lines from top) used in the last render.

total_content_lines: usize

Total content lines in the last render.

auto_scroll_direction: Option<i8>

Auto-scroll direction: -1 = up (toward top), 1 = down (toward bottom), None = no auto-scroll.

Implementations

impl SelectionState

pub fn screen_to_text_position( &self, col: u16, row: u16, ) -> Option<TextPosition>

Map a screen position (col, row) to a content-space TextPosition.

• col, row: absolute terminal coordinates
• Returns None if the position is outside the conversation area.

pub fn is_in_conversation_area(&self, col: u16, row: u16) -> bool

Check if a screen position is within the conversation area.

pub fn clear(&mut self)

Clear the selection state.

pub fn start(&mut self, col: u16, row: u16)

Start a selection at the given screen position.

pub fn extend(&mut self, col: u16, row: u16)

Extend the selection to the given screen position (during drag).

pub fn finalize(&mut self) -> bool

Finalize the selection on mouse-up. Returns true if there’s a non-empty selection.

Trait Implementations

impl Debug for SelectionState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SelectionState

fn default() -> SelectionState

Returns the “default value” for a type.