Struct NavigationState 

pub struct NavigationState {

    pub selected_row: usize,
    pub selected_column: usize,
    pub scroll_offset: (usize, usize),
    pub viewport_rows: usize,
    pub viewport_columns: usize,
    pub total_rows: usize,
    pub total_columns: usize,
    pub last_visible_rows: usize,
    pub viewport_lock: bool,
    pub viewport_lock_row: Option<usize>,
    pub cursor_lock: bool,
    pub cursor_lock_position: Option<usize>,
    pub selection_history: VecDeque<(usize, usize)>,
}

Navigation and viewport state

Fields

selected_row: usize

selected_column: usize

scroll_offset: (usize, usize)

viewport_rows: usize

viewport_columns: usize

total_rows: usize

total_columns: usize

last_visible_rows: usize

viewport_lock: bool

viewport_lock_row: Option<usize>

cursor_lock: bool

cursor_lock_position: Option<usize>

selection_history: VecDeque<(usize, usize)>

Implementations

impl NavigationState

pub fn new() -> Self

pub fn reset(&mut self)

Reset navigation state to initial values (used when executing new queries)

pub fn update_totals(&mut self, rows: usize, columns: usize)

pub fn set_viewport_size(&mut self, rows: usize, columns: usize)

pub fn next_row(&mut self) -> bool

Move to next row

pub fn previous_row(&mut self) -> bool

Move to previous row

pub fn next_column(&mut self) -> bool

Move to next column

pub fn previous_column(&mut self) -> bool

Move to previous column

pub fn jump_to_row(&mut self, row: usize)

Jump to specific row

pub fn jump_to_first_row(&mut self)

Jump to first row

pub fn jump_to_last_row(&mut self)

Jump to last row

pub fn set_position(&mut self, row: usize, column: usize)

Set selected position

pub fn page_down(&mut self)

Page down

pub fn page_up(&mut self)

Page up

pub fn jump_to_viewport_top(&mut self)

Jump to top of viewport (H in vim)

pub fn jump_to_viewport_middle(&mut self)

Jump to middle of viewport (M in vim)

pub fn jump_to_viewport_bottom(&mut self)

Jump to bottom of viewport (L in vim)

pub fn is_position_visible(&self, row: usize, col: usize) -> bool

pub fn ensure_visible(&mut self, row: usize, col: usize)

pub fn is_at_viewport_top(&self) -> bool

Check if cursor is at top of viewport

pub fn is_at_viewport_bottom(&self) -> bool

Check if cursor is at bottom of viewport

pub fn get_position_status(&self) -> String

Get position description for status

pub fn add_to_history(&mut self, row: usize, col: usize)

Trait Implementations

impl Clone for NavigationState

fn clone(&self) -> NavigationState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NavigationState

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

Formats the value using the given formatter.

impl Default for NavigationState

fn default() -> Self

Returns the “default value” for a type.