org_social_lib_rs/
feed_view.rs

1//! Feed view trait and implementations for different feed display and filtering strategies.
2//!
3//! This module defines the `FeedView` trait that allows different views to be created
4//! over a shared collection of posts and profiles. Views can filter, sort, and present
5//! the data in different ways while sharing the underlying data.
6
7use crate::{feed, post::Post};
8
9/// A trait for different views over feed data.
10///
11/// Feed views provide different ways to present and interact with the same
12/// underlying collection of posts and profiles. Views share references to
13/// the posts without cloning the actual post data.
14pub trait FeedView {
15    /// Update the view with new posts and profiles.
16    /// This is called by the parent Feed when the underlying data changes, and when the view is first added.
17    fn update_content(&mut self, feed: &feed::Feed);
18    
19    /// Get the number of posts in this view.
20    fn len(&self) -> usize;
21    
22    /// Check if this view is empty.
23    fn is_empty(&self) -> bool {
24        self.len() == 0
25    }
26    
27    /// Get a display name for this view.
28    fn view_name(&self) -> &str;
29    
30    /// Refresh the view - recompute any derived data
31    fn refresh(&mut self);
32
33    /// Apply a filter function to the posts in this view
34    fn apply_filter(&mut self, filter_fn: Box<dyn Fn(&Post) -> bool>);
35}
org_social_lib_rs/feed_view.rs

org_social_lib_rs/
feed_view.rs
