Struct HostState 

pub struct HostState {

    pub ssh_config: SshConfigFile,
    pub list: Vec<HostEntry>,
    pub patterns: Vec<PatternEntry>,
    pub display_list: Vec<HostListItem>,
    pub render_cache: HostListRenderCache,
    pub undo_stack: Vec<DeletedHost>,
    pub multi_select: HashSet<usize>,
    pub sort_mode: SortMode,
    pub group_by: GroupBy,
    pub view_mode: ViewMode,
    pub group_filter: Option<String>,
    pub group_tab_order: Vec<String>,
    pub group_host_counts: HashMap<String, usize>,
}

Host, group, sort and view state grouped off the App god-struct. Holds the parsed ~/.ssh/config, the resolved host + pattern entries, the display list built from them, the render cache, the undo stack for deletions, the multi-select set for bulk snippet runs and all sort / group / view UI-state. Pure state container.

Fields

ssh_config: SshConfigFile

list: Vec<HostEntry>

patterns: Vec<PatternEntry>

display_list: Vec<HostListItem>

render_cache: HostListRenderCache

undo_stack: Vec<DeletedHost>

multi_select: HashSet<usize>

Host indices selected for multi-host snippet execution (space to toggle).

sort_mode: SortMode

group_by: GroupBy

view_mode: ViewMode

group_filter: Option<String>

Currently active group filter. None = show all groups.

group_tab_order: Vec<String>

Ordered list of group names from the current display list.

group_host_counts: HashMap<String, usize>

Host/pattern counts per group (computed before group filtering).

Implementations

impl HostState

pub fn from_config( ssh_config: SshConfigFile, hosts: Vec<HostEntry>, patterns: Vec<PatternEntry>, display_list: Vec<HostListItem>, ) -> Self

Construct from a loaded config and pre-resolved host/pattern lists.

pub fn set_group_by(&mut self, by: GroupBy)

Change the group-by mode and reset any active group filter in lockstep. Callers that change group_by directly would leave a stale group_filter referring to a group that no longer exists.

pub fn toggle_view_mode(&mut self)

Flip the host list between Compact and Detailed view.

pub fn toggle_multi_select(&mut self, idx: usize) -> bool

Toggle multi-select membership for the host at idx. Returns true when idx is now selected (was inserted) and false when it is now unselected (was removed) so the caller can react without re-reading the set.