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
pub struct List<T> {
message: String,
selection_list: Vec<(String, T)>,
term_data: TermData,
}
impl<T> List<T> {
pub fn new(message: String) -> Self {
Self {
message,
selection_list: Vec::new(),
term_data: TermData::new()
}
}
pub fn add_item(mut self, selection_name: &str, item: T) -> Self {
self.selection_list.push((String::from(selection_name), item));
self
}
pub fn inquire(mut self) -> Result<T, InquiryMessage> {
if !self.term_data.enable_raw() {
return Err(InquiryMessage::TermEnableRawErr);
}
AnsiBuilder::new()
.text("[")
.color().fg().bright_green()
.text("?")
.reset_attributes()
.text("] ")
.text(&self.message)
.cursor().save()
.cursor().hide()
.println();
let mut selected_index = 0;
let list_len = self.selection_list.len();
for _ in 0..list_len - 1 {
println!();
}
loop {
AnsiBuilder::new()
.cursor().up(list_len)
.print();
for i in 0..list_len {
AnsiBuilder::new()
.text("\n\r")
.erase_line(ClearMode::EntireLine)
.print();
if i == selected_index {
AnsiBuilder::new()
.color().fg().bright_green()
.style().bold()
.text(" → ")
.reset_attributes()
.text(&self.selection_list[i].0)
.print();
continue
}
AnsiBuilder::new().text(" ")
.color().fg().gray()
.text(&self.selection_list[i].0)
.reset_attributes()
.print();
}
match stdout().lock().flush() {
Ok(..) => {},
Err(..) => return Err(InquiryMessage::FlushLockErr)
};
let key = Keys::from(stdin());
match key {
Keys::Up => if selected_index > 0 { selected_index -= 1 },
Keys::Down => if selected_index < self.selection_list.len() - 1 {
selected_index += 1;
},
Keys::Enter => {
let (name, value) = self.selection_list
.remove(selected_index);
AnsiBuilder::new()
.cursor().restore()
.color().fg().blue()
.text(&format!(" {}", name))
.reset_attributes()
.println()
.cursor().save()
.erase_in_display(EraseMode::CursorToEnd)
.cursor().restore()
.cursor().show()
.print();
return Ok(value)
},
Keys::CtrlC | Keys::CtrlZ => {
AnsiBuilder::new()
.cursor().show()
.print();
if !self.term_data.disable_raw() {
return Err(InquiryMessage::TermDisableRawErr)
}
return Err(InquiryMessage::CloseRequested)
},
_ => {}
}
}
}
}
use std::io::{ Write, stdin, stdout };
use ansi_builder::{ AnsiBuilder, ClearMode, EraseMode };
use crate::{ InquiryMessage, Keys, term_data::TermData };