/
tui_keybindings.go
135 lines (121 loc) · 2.22 KB
/
tui_keybindings.go
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
package cmd
import (
"fmt"
"sort"
"strings"
"github.com/ghodss/yaml"
"github.com/pkg/errors"
)
var tuiCurrentBindings map[string]string
// This is a default YAML configuration for the key bindings,
// it can serve as an example as well.
const tuiDefaultBindingsYAML = " \"`\": " + `KEY_PRECH
"\"": KEY_PAUSE
"*": KEY_VOLUP
"+": KEY_CHUP
"-": KEY_CHDOWN
"/": KEY_VOLDOWN
"<": KEY_REWIND
">": KEY_FF
"(": KEY_REWIND_
")": KEY_FF_
"0": KEY_0
"1": KEY_1
"2": KEY_2
"3": KEY_3
"4": KEY_4
"5": KEY_5
"6": KEY_6
"7": KEY_7
"8": KEY_8
"9": KEY_9
"B": KEY_BLUE
"G": KEY_GREEN
"H": KEY_HOME
"L": KEY_CH_LIST
"M": KEY_MENU
"P": KEY_POWER
"Q": KEY_EXIT
"R": KEY_RED
"Y": KEY_YELLOW
"c": KEY_CONTENTS
"d": KEY_HDMI
"g": KEY_GUIDE
"h": KEY_LEFT
"i": KEY_INFO
"j": KEY_DOWN
"k": KEY_UP
"l": KEY_RIGHT
"m": KEY_MUTE
"p": KEY_STOP
"s": KEY_SOURCE
"t": KEY_TV
"q": TUI_QUIT
`
func tuiLoadKeyBindings(yamlText string) error {
var b map[string]string
if err := yaml.Unmarshal([]byte(yamlText), &b); err != nil {
return err
}
tuiCurrentBindings = b
return nil
}
func tuiListKeyBindings(maxWidth int) string {
bk := make([]string, len(tuiCurrentBindings))
maxLen := 0
i := 0
for k, a := range tuiCurrentBindings {
bk[i] = k
i++
l := len(k) + len(a)
if l > maxLen {
maxLen = l
}
}
sort.Strings(bk)
ncol := maxWidth / (maxLen + 10)
switch {
case ncol < 1:
ncol = 1
case ncol > 4:
ncol = 4
}
colW := maxWidth/ncol - 1
var b strings.Builder
i = 0
n := len(bk)
displayed := 0
for displayed < n {
idx := ((n+ncol-1)/ncol)*(i%ncol) + i/ncol
i++
if idx >= n {
if i%ncol == 0 {
b.WriteString("\n")
}
continue
}
k := bk[idx]
a := tuiCurrentBindings[k]
fmt.Fprintf(&b, " %s -> %s", k, a)
displayed++
if i%ncol == 0 {
b.WriteString("\n")
continue
}
if displayed == n {
break
}
fmt.Fprintf(&b, strings.Repeat(" ", colW-4-len(k)-len(a)))
}
return b.String()
}
func getKeyFromString(k string) (interface{}, error) {
if len(k) == 1 {
return rune(k[0]), nil
}
if k == "" {
return nil, errors.New("empty key string")
}
// TODO: Add special keys here...
return nil, errors.New("unsupported key identifier")
}