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
|
package main
// A program demonstrating how to use the WithFilter option to intercept events.
import (
"fmt"
"log"
"github.com/charmbracelet/bubbles/help"
"github.com/charmbracelet/bubbles/key"
"github.com/charmbracelet/bubbles/textarea"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
)
var (
choiceStyle = lipgloss.NewStyle().PaddingLeft(1).Foreground(lipgloss.Color("241"))
saveTextStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("170"))
quitViewStyle = lipgloss.NewStyle().Padding(1).Border(lipgloss.RoundedBorder()).BorderForeground(lipgloss.Color("170"))
)
func main() {
p := tea.NewProgram(initialModel(), tea.WithFilter(filter))
if _, err := p.Run(); err != nil {
log.Fatal(err)
}
}
func filter(teaModel tea.Model, msg tea.Msg) tea.Msg {
if _, ok := msg.(tea.QuitMsg); !ok {
return msg
}
m := teaModel.(model)
if m.hasChanges {
return nil
}
return msg
}
type model struct {
textarea textarea.Model
help help.Model
keymap keymap
saveText string
hasChanges bool
quitting bool
}
type keymap struct {
save key.Binding
quit key.Binding
}
func initialModel() model {
ti := textarea.New()
ti.Placeholder = "Only the best words"
ti.Focus()
return model{
textarea: ti,
help: help.New(),
keymap: keymap{
save: key.NewBinding(
key.WithKeys("ctrl+s"),
key.WithHelp("ctrl+s", "save"),
),
quit: key.NewBinding(
key.WithKeys("esc", "ctrl+c"),
key.WithHelp("esc", "quit"),
),
},
}
}
func (m model) Init() tea.Cmd {
return textarea.Blink
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
if m.quitting {
return m.updatePromptView(msg)
}
return m.updateTextView(msg)
}
func (m model) updateTextView(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmds []tea.Cmd
var cmd tea.Cmd
switch msg := msg.(type) {
case tea.KeyMsg:
m.saveText = ""
switch {
case key.Matches(msg, m.keymap.save):
m.saveText = "Changes saved!"
m.hasChanges = false
case key.Matches(msg, m.keymap.quit):
m.quitting = true
return m, tea.Quit
case msg.Type == tea.KeyRunes:
m.saveText = ""
m.hasChanges = true
fallthrough
default:
if !m.textarea.Focused() {
cmd = m.textarea.Focus()
cmds = append(cmds, cmd)
}
}
}
m.textarea, cmd = m.textarea.Update(msg)
cmds = append(cmds, cmd)
return m, tea.Batch(cmds...)
}
func (m model) updatePromptView(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
// For simplicity's sake, we'll treat any key besides "y" as "no"
if key.Matches(msg, m.keymap.quit) || msg.String() == "y" {
m.hasChanges = false
return m, tea.Quit
}
m.quitting = false
}
return m, nil
}
func (m model) View() string {
if m.quitting {
if m.hasChanges {
text := lipgloss.JoinHorizontal(lipgloss.Top, "You have unsaved changes. Quit without saving?", choiceStyle.Render("[yn]"))
return quitViewStyle.Render(text)
}
return "Very important, thank you\n"
}
helpView := m.help.ShortHelpView([]key.Binding{
m.keymap.save,
m.keymap.quit,
})
return fmt.Sprintf(
"\nType some important things.\n\n%s\n\n %s\n %s",
m.textarea.View(),
saveTextStyle.Render(m.saveText),
helpView,
) + "\n\n"
}
|
