matchmaker/ui/
preview.rs

1use log::{error};
2use ratatui::{
3    layout::Rect,
4    widgets::{Paragraph, Wrap},
5};
6
7use crate::{
8    config::{PreviewConfig, PreviewLayoutSetting},
9    spawn::preview::PreviewerView,
10};
11
12#[derive(Debug)]
13pub struct PreviewUI {
14    pub view: PreviewerView,
15    config: PreviewConfig,
16    pub layout_idx: usize,
17    pub area: Rect,
18    pub offset: u16,
19}
20
21impl PreviewUI {
22    pub fn new(view: PreviewerView, config: PreviewConfig) -> Self {
23        Self {
24            view,
25            config,
26            layout_idx: 0,
27            offset: 0,
28            area: Rect::default()
29        }
30    }
31    
32    pub fn is_show(&self) -> bool {
33        self.config.show && self.layout().max != 0 // sentinel for hidden preview
34        // btw, for running background tasks, use an event handler
35    }
36    pub fn show<const SHOW: bool>(&mut self) -> bool {
37        let previous = self.config.show;
38        self.config.show = SHOW;
39        previous != SHOW
40    }
41    pub fn toggle_show(&mut self) {
42        self.config.show = !self.config.show;
43    }
44    
45    pub fn layout(&self) -> &PreviewLayoutSetting {
46        &self.config.layout[self.layout_idx].layout
47    }
48    pub fn command(&self) -> &String {
49        &self.config.layout[self.layout_idx].command
50    }
51    
52    // pub fn up(&mut self, n: u16) {
53    //     if self.offset >= n {
54    //         self.offset -= n;
55    //     } else {
56    //         self.offset = 0;
57    //     }
58    // }
59    // pub fn down(&mut self, n: u16) {
60    //     let total_lines = self.view.len() as u16;
61    //     self.offset = (total_lines + self.area.height).min(self.offset + n);
62    // }
63    
64    pub fn up(&mut self, n: u16) {
65        if self.offset >= n {
66            self.offset -= n;
67        } else if self.config.scroll_wrap {
68            let total_lines = self.view.len() as u16;
69            self.offset = total_lines.saturating_sub(n - self.offset);
70        } else {
71            self.offset = 0;
72        }
73    }
74    
75    pub fn down(&mut self, n: u16) {
76        let total_lines = self.view.len() as u16;
77        
78        if self.offset + n > total_lines {
79            if self.config.scroll_wrap {
80                self.offset = 0;
81            } else {
82                self.offset = total_lines;
83            }
84        } else {
85            self.offset += n;
86        }
87    }
88    
89    
90    pub fn update_dimensions(&mut self, area: &Rect) {
91        let mut height = area.height;
92        height -= self.config.border.height();
93        self.area.height = height;
94        
95        let mut width = area.width;
96        width -= self.config.border.width();
97        self.area.width = width;
98    }
99    
100    pub fn cycle_layout(&mut self) {
101        self.layout_idx = (self.layout_idx + 1) % self.config.layout.len()
102    }
103    
104    
105    pub fn set_idx(&mut self, idx: u8) -> bool {
106        let idx = idx as usize;
107        if idx <= self.config.layout.len() {
108            let changed = self.layout_idx != idx;
109            self.layout_idx = idx;
110            changed
111        } else {
112            error!("Layout idx {idx} out of bounds, ignoring.");
113            false
114        }
115    }
116    
117    pub fn make_preview(&self) -> Paragraph<'_> {
118        let results = self.view.results();
119        let height = self.area.height as usize;
120        let offset = self.offset as usize;
121        
122        // todo: can we avoid cloning?
123        let visible_lines: Vec<_> = results
124        .iter()
125        .skip(offset)
126        .take(height)
127        .cloned()
128        .collect();
129        
130        let mut preview = Paragraph::new(visible_lines);
131        preview = preview.block(self.config.border.as_block());
132        if self.config.wrap {
133            preview = preview.wrap(Wrap { trim: true });
134        }
135        preview
136    }
137}
matchmaker/ui/preview.rs

matchmaker/ui/
preview.rs
