Struct EditorCore 

pub struct EditorCore { /* private fields */ }

Editor Core state

EditorCore aggregates all underlying editor components, including:

• LineIndex: Rope-backed canonical text buffer with fast line access
• LayoutEngine: Soft wrapping and text layout calculation
• IntervalTree: Style interval management
• FoldingManager: Code folding management
• Cursor & Selection: Cursor and selection state

Example

use editor_core::EditorCore;

let mut core = EditorCore::new("Hello\nWorld", 80);
assert_eq!(core.line_count(), 2);
assert_eq!(core.get_text(), "Hello\nWorld");

Implementations

impl EditorCore

pub fn get_headless_grid_styled( &self, start_visual_row: usize, count: usize, ) -> HeadlessGrid

Get styled headless grid snapshot (by visual line).

• Supportsoft wrapping (based layout_engine)
• Cell.styles will interval_tree + style_layers merged from
• Supportcode folding (based folding_manager)

Note: This API is not responsible for mapping StyleId to specific colors.

pub fn get_minimap_grid( &self, start_visual_row: usize, count: usize, ) -> MinimapGrid

Get a lightweight minimap snapshot (by visual line).

Compared with Self::get_headless_grid_styled, this API returns aggregated per-line summaries instead of per-character cells, which is intended for minimap-like overviews.

pub fn get_headless_grid_composed( &self, start_visual_row: usize, count: usize, ) -> ComposedGrid

Get a decoration-aware composed grid snapshot (by composed visual line).

This is an optional snapshot path that injects:

• inline virtual text (DecorationPlacement::{Before,After}), e.g. inlay hints
• above-line virtual text (DecorationPlacement::AboveLine), e.g. code lens

Notes:

• Wrapping is still computed from the underlying document text only.
• Virtual text can therefore extend past the viewport width; hosts may clip.
• Each ComposedCell carries its origin (Document vs Virtual) so hosts can map interactions back to document offsets without re-implementing layout.

impl EditorCore

pub fn new(text: &str, viewport_width: usize) -> Self

Create a new Editor Core

pub fn empty(viewport_width: usize) -> Self

Create an empty Editor Core

pub fn get_text(&self) -> String

Get text content

pub fn text_range(&self, start: usize, len: usize) -> String

Get a text range by character offset and length.

pub fn line_count(&self) -> usize

Get total line count

pub fn char_count(&self) -> usize

Get total character count

pub fn set_word_boundary_ascii_boundary_chars(&mut self, boundary_chars: &str)

Override the ASCII word-boundary character set used by editor-friendly “word” operations.

See WordBoundaryConfig::set_ascii_boundary_chars.

pub fn reset_word_boundary_defaults(&mut self)

Reset word-boundary configuration to the default (ASCII identifier-like words).

pub fn cursor_position(&self) -> Position

Get cursor position

pub fn selection(&self) -> Option<&Selection>

Get selection range

pub fn secondary_selections(&self) -> &[Selection]

Get secondary selections/cursors (multi-cursor)

pub fn line_index(&self) -> &LineIndex

Get the canonical line index and text access facade.

pub fn layout_engine(&self) -> &LayoutEngine

Get the current layout engine state.

pub fn interval_tree(&self) -> &IntervalTree

Get the base style interval tree.

pub fn style_layers(&self) -> &BTreeMap<StyleLayerId, IntervalTree>

Get all style layers.

pub fn style_layer(&self, layer: StyleLayerId) -> Option<&IntervalTree>

Get one style layer by id.

pub fn diagnostics(&self) -> &[Diagnostic]

Get the current diagnostics list.

pub fn decorations(&self) -> &BTreeMap<DecorationLayerId, Vec<Decoration>>

Get all decoration layers.

pub fn decorations_for_layer(&self, layer: DecorationLayerId) -> &[Decoration]

Get all decorations for a given layer.

pub fn document_symbols(&self) -> &DocumentOutline

Get the current document outline.

pub fn folding_manager(&self) -> &FoldingManager

Get the folding manager as a read-only view.

pub fn viewport_width(&self) -> usize

Get the current viewport width in cells.

pub fn invalidate_visual_row_index_cache(&mut self)

Invalidate cached visual-row index (wrap/folding derived mapping).

pub fn visual_line_count(&self) -> usize

Get total visual line count (considering soft wrapping + folding).

pub fn visual_to_logical_line(&self, visual_line: usize) -> (usize, usize)

Map visual line number back to (logical_line, visual_in_logical), considering folding.

pub fn logical_position_to_visual( &self, logical_line: usize, column: usize, ) -> Option<(usize, usize)>

Convert logical coordinates (line, column) to visual coordinates (visual line number, in-line x cell offset), considering folding.

pub fn logical_position_to_visual_allow_virtual( &self, logical_line: usize, column: usize, ) -> Option<(usize, usize)>

Convert logical coordinates (line, column) to visual coordinates (visual line number, in-line x cell offset), considering folding.

Difference from logical_position_to_visual is that it allows column to exceed the line end: the exceeding part is treated as ' ' (width=1) virtual spaces, suitable for rectangular selection / column editing.

pub fn visual_position_to_logical( &self, visual_row: usize, x_in_cells: usize, ) -> Option<Position>

Convert visual coordinates (global visual row + x in cells) back to logical (line, column).

• visual_row is the global visual row (after soft wrapping and folding).
• x_in_cells is the cell offset within that visual row (0-based).

Returns None if layout information is unavailable.