Struct NavFeed 

pub struct NavFeed(/* private fields */);

The app’s side of a NavList that stands in a shell around it: the app shows its places and the chosen one with Self::show, and takes what the person chose with Self::take_chosen and the section actions they ran (“New playlist”) with Self::take_section_actions, the rows they checked with Self::take_checks and what they folded with Self::take_expands, the menus they asked for with Self::take_menus and the names they gave with Self::take_renames. The list reads the feed at every sync and update (NavList::fed_by).

Implementations

impl NavFeed

pub fn new() -> NavFeed

An empty feed.

pub fn show(&self, sections: Vec<NavSection>, selected: Option<String>)

Show these places, with selected chosen. Cheap when nothing changed.

pub fn shown(&self) -> Option<(Vec<NavSection>, Option<String>)>

What the app last showed: the places and the chosen one.

pub fn take_chosen(&self) -> Vec<String>

The places the person chose since the last call, oldest first.

pub fn take_section_actions(&self) -> Vec<(String, String)>

The section actions the person ran since the last call, as (section id, action id), oldest first.

pub fn take_checks(&self) -> Vec<(String, bool)>

The rows the person checked or cleared since the last call, as (place id, now checked), oldest first.

pub fn take_expands(&self) -> Vec<(String, bool)>

The sections and rows the person opened or folded since the last call, as (id, now open), oldest first: what the app keeps folded.

pub fn take_item_actions(&self) -> Vec<(String, String)>

The item actions the person ran since the last call, as (place id, action id), oldest first (NavList::fed_actions).

pub fn take_menus(&self) -> Vec<(String, Rect, Point)>

The menus the person asked for since the last call, as (place or section id, the row’s lift, where the menu opens), oldest first (NavList::fed_menus). Hand the lift to ContextMenu::anchor_row so the row stays marked while its menu is open.

pub fn take_renames(&self) -> Vec<(String, String)>

The names the person gave rows or sections in place since the last call, as (id, name), oldest first (NavList::fed_renames).

pub fn begin_rename(&self, id: &str, focus_target: &mut Option<NodeId>)

Open the rename field on the row or section id (its menu’s Rename), handing the list the keyboard through focus_target, the one of the event that asked for it (crate::widget::EventCtx). The name comes back through Self::take_renames.

pub fn set_open(&self, id: &str, open: bool)

Open or fold the section or row id as the person would (its menu’s Collapse): the list keeps what the person folds, so the app asks it rather than showing it folded.

pub fn list_rect(&self) -> Option<Rect>

Where the list stood when it last painted (window coordinates): with the app’s own area, where a menu over the list may open.

pub fn place_at(&self, point: Point) -> Option<(String, Rect)>

The place whose row is at point (window coordinates) and its row, as the list last painted them: where a drag the app runs from its own content would be let go (“onto this playlist”).

Trait Implementations

impl Clone for NavFeed

fn clone(&self) -> NavFeed

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for NavFeed

fn default() -> NavFeed

Returns the “default value” for a type.