elio 1.5.1

Snappy, batteries-included terminal file manager with rich previews, inline images, bulk actions, and trash support.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151

use crate::{
    file_info::DocumentFormat,
    preview::{PreviewContent, PreviewKind, appearance as theme},
};
use ratatui::{
    style::Style,
    text::{Line, Span},
};

#[derive(Clone, Debug, Default)]
pub(super) struct DocumentMetadata {
    pub(super) variant: Option<String>,
    pub(super) title: Option<String>,
    pub(super) subject: Option<String>,
    pub(super) author: Option<String>,
    pub(super) modified_by: Option<String>,
    pub(super) application: Option<String>,
    pub(super) created: Option<String>,
    pub(super) modified: Option<String>,
    pub(super) stats: Vec<(String, String)>,
    pub(super) metadata: Vec<(String, String)>,
}

pub(super) fn render_document_preview(
    format: DocumentFormat,
    metadata: DocumentMetadata,
) -> PreviewContent {
    let mut lines = render_document_preview_lines(&metadata);
    if lines.is_empty() {
        lines.push(Line::from("No document metadata available"));
    }

    PreviewContent::new(PreviewKind::Document, lines).with_detail(format.detail_label())
}

pub(super) fn render_document_preview_lines(metadata: &DocumentMetadata) -> Vec<Line<'static>> {
    let palette = theme::palette();
    let mut lines = Vec::new();
    let details = [
        ("Variant", metadata.variant.as_deref()),
        ("Title", metadata.title.as_deref()),
        ("Subject", metadata.subject.as_deref()),
        ("Author", metadata.author.as_deref()),
        ("Modified By", metadata.modified_by.as_deref()),
        ("Application", metadata.application.as_deref()),
        ("Created", metadata.created.as_deref()),
        ("Modified", metadata.modified.as_deref()),
    ];
    let label_width = details
        .iter()
        .filter(|(_, value)| value.is_some())
        .map(|(label, _)| label.len())
        .max()
        .unwrap_or(0)
        .max(owned_section_label_width(&metadata.stats))
        .max(owned_section_label_width(&metadata.metadata))
        .max(6);

    let mut owned_details = metadata.stats.clone();
    owned_details.extend(metadata.metadata.iter().cloned());
    push_combined_section(
        &mut lines,
        "Details",
        &details,
        &owned_details,
        label_width,
        palette,
    );
    lines
}

pub(super) fn render_document_field_lines(fields: &[(String, String)]) -> Vec<Line<'static>> {
    let palette = theme::palette();
    let label_width = owned_section_label_width(fields);
    fields
        .iter()
        .map(|(label, value)| compact_document_line(label, value, label_width, palette))
        .collect()
}

fn push_combined_section(
    lines: &mut Vec<Line<'static>>,
    title: &str,
    fields: &[(&str, Option<&str>)],
    owned_fields: &[(String, String)],
    label_width: usize,
    palette: theme::Palette,
) {
    let visible_fields: Vec<_> = fields
        .iter()
        .filter_map(|(label, value)| value.map(|value| (*label, value)))
        .collect();
    if visible_fields.is_empty() && owned_fields.is_empty() {
        return;
    }
    if !lines.is_empty() {
        lines.push(Line::from(""));
    }
    lines.push(section_line(title, palette));
    for (label, value) in visible_fields {
        lines.push(document_line(label, value, label_width, palette));
    }
    for (label, value) in owned_fields {
        lines.push(document_line(label, value, label_width, palette));
    }
}

fn owned_section_label_width(fields: &[(String, String)]) -> usize {
    fields
        .iter()
        .map(|(label, _)| label.len())
        .max()
        .unwrap_or(0)
}

fn section_line(title: &str, palette: theme::Palette) -> Line<'static> {
    Line::from(Span::styled(
        title.to_string(),
        Style::default().fg(palette.accent),
    ))
}

fn document_line(
    label: &str,
    value: &str,
    label_width: usize,
    palette: theme::Palette,
) -> Line<'static> {
    Line::from(vec![
        Span::styled(
            format!("{label:<width$} ", width = label_width + 1),
            Style::default().fg(palette.muted),
        ),
        Span::styled(value.to_string(), Style::default().fg(palette.text)),
    ])
}

fn compact_document_line(
    label: &str,
    value: &str,
    label_width: usize,
    palette: theme::Palette,
) -> Line<'static> {
    Line::from(vec![
        Span::styled(
            format!("{label:<label_width$} "),
            Style::default().fg(palette.muted),
        ),
        Span::styled(value.to_string(), Style::default().fg(palette.text)),
    ])
}