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
152
153
154
155
156
157
158
159
|
package utilComponents
import (
"github.com/charmbracelet/bubbles/key"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/sst/opencode/internal/layout"
"github.com/sst/opencode/internal/styles"
"github.com/sst/opencode/internal/theme"
)
type SimpleListItem interface {
Render(selected bool, width int) string
}
type SimpleList[T SimpleListItem] interface {
tea.Model
layout.Bindings
SetMaxWidth(maxWidth int)
GetSelectedItem() (item T, idx int)
SetItems(items []T)
GetItems() []T
}
type simpleListCmp[T SimpleListItem] struct {
fallbackMsg string
items []T
selectedIdx int
maxWidth int
maxVisibleItems int
useAlphaNumericKeys bool
width int
height int
}
type simpleListKeyMap struct {
Up key.Binding
Down key.Binding
UpAlpha key.Binding
DownAlpha key.Binding
}
var simpleListKeys = simpleListKeyMap{
Up: key.NewBinding(
key.WithKeys("up"),
key.WithHelp("↑", "previous list item"),
),
Down: key.NewBinding(
key.WithKeys("down"),
key.WithHelp("↓", "next list item"),
),
UpAlpha: key.NewBinding(
key.WithKeys("k"),
key.WithHelp("k", "previous list item"),
),
DownAlpha: key.NewBinding(
key.WithKeys("j"),
key.WithHelp("j", "next list item"),
),
}
func (c *simpleListCmp[T]) Init() tea.Cmd {
return nil
}
func (c *simpleListCmp[T]) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
switch {
case key.Matches(msg, simpleListKeys.Up) || (c.useAlphaNumericKeys && key.Matches(msg, simpleListKeys.UpAlpha)):
if c.selectedIdx > 0 {
c.selectedIdx--
}
return c, nil
case key.Matches(msg, simpleListKeys.Down) || (c.useAlphaNumericKeys && key.Matches(msg, simpleListKeys.DownAlpha)):
if c.selectedIdx < len(c.items)-1 {
c.selectedIdx++
}
return c, nil
}
}
return c, nil
}
func (c *simpleListCmp[T]) BindingKeys() []key.Binding {
return layout.KeyMapToSlice(simpleListKeys)
}
func (c *simpleListCmp[T]) GetSelectedItem() (T, int) {
if len(c.items) > 0 {
return c.items[c.selectedIdx], c.selectedIdx
}
var zero T
return zero, -1
}
func (c *simpleListCmp[T]) SetItems(items []T) {
c.selectedIdx = 0
c.items = items
}
func (c *simpleListCmp[T]) GetItems() []T {
return c.items
}
func (c *simpleListCmp[T]) SetMaxWidth(width int) {
c.maxWidth = width
}
func (c *simpleListCmp[T]) View() string {
t := theme.CurrentTheme()
baseStyle := styles.BaseStyle()
items := c.items
maxWidth := c.maxWidth
maxVisibleItems := min(c.maxVisibleItems, len(items))
startIdx := 0
if len(items) <= 0 {
return baseStyle.
Background(t.Background()).
Padding(0, 1).
Width(maxWidth).
Render(c.fallbackMsg)
}
if len(items) > maxVisibleItems {
halfVisible := maxVisibleItems / 2
if c.selectedIdx >= halfVisible && c.selectedIdx < len(items)-halfVisible {
startIdx = c.selectedIdx - halfVisible
} else if c.selectedIdx >= len(items)-halfVisible {
startIdx = len(items) - maxVisibleItems
}
}
endIdx := min(startIdx+maxVisibleItems, len(items))
listItems := make([]string, 0, maxVisibleItems)
for i := startIdx; i < endIdx; i++ {
item := items[i]
title := item.Render(i == c.selectedIdx, maxWidth)
listItems = append(listItems, title)
}
return lipgloss.JoinVertical(lipgloss.Left, listItems...)
}
func NewSimpleList[T SimpleListItem](items []T, maxVisibleItems int, fallbackMsg string, useAlphaNumericKeys bool) SimpleList[T] {
return &simpleListCmp[T]{
fallbackMsg: fallbackMsg,
items: items,
maxVisibleItems: maxVisibleItems,
useAlphaNumericKeys: useAlphaNumericKeys,
selectedIdx: 0,
}
}
|
