nxt::tui::TextField struct
#include <nxt/text_field.hpp>

Single-line editable text with a UTF-8-aware cursor.

cursor_byte is always at a UTF-8 boundary in the range [0, text.size()]. Edit methods clamp it defensively in case text was modified directly.

Public functions

auto cell_count() const → width_t noexcept: Display column count.
void clear() noexcept: Clear the field and reset the cursor to the beginning.
auto cursor_cell() const → width_t noexcept: Cursor column.
auto empty() const → bool noexcept: True when the field contains no text.
auto erase_left() → bool noexcept
auto erase_right() → bool noexcept: Delete the UTF-8 cell to the right of the cursor (forward delete).
void insert(std::string_view bytes): Insert UTF-8 bytes at the cursor and advance.
auto move_end() → bool noexcept: Move the cursor to the end of the field.
auto move_home() → bool noexcept: Move the cursor to the beginning of the field.
auto move_left() → bool noexcept: Move the cursor one UTF-8 cell left.
auto move_right() → bool noexcept: Move the cursor one UTF-8 cell right.

Delete the UTF-8 cell to the left of the cursor (backspace). Returns true if anything was deleted.