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package main
import (
"fmt"
"math/rand"
"os"
"time"
"github.com/charmbracelet/bubbles/key"
"github.com/charmbracelet/bubbles/list"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
)
var (
appStyle = lipgloss.NewStyle().Padding(1, 2)
titleStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("#FFFDF5")).
Background(lipgloss.Color("#25A065")).
Padding(0, 1)
statusMessageStyle = lipgloss.NewStyle().
Foreground(lipgloss.AdaptiveColor{Light: "#04B575", Dark: "#04B575"}).
Render
)
type item struct {
title string
description string
}
func (i item) Title() string { return i.title }
func (i item) Description() string { return i.description }
func (i item) FilterValue() string { return i.title }
type listKeyMap struct {
toggleSpinner key.Binding
toggleTitleBar key.Binding
toggleStatusBar key.Binding
togglePagination key.Binding
toggleHelpMenu key.Binding
insertItem key.Binding
}
func newListKeyMap() *listKeyMap {
return &listKeyMap{
insertItem: key.NewBinding(
key.WithKeys("a"),
key.WithHelp("a", "add item"),
),
toggleSpinner: key.NewBinding(
key.WithKeys("s"),
key.WithHelp("s", "toggle spinner"),
),
toggleTitleBar: key.NewBinding(
key.WithKeys("T"),
key.WithHelp("T", "toggle title"),
),
toggleStatusBar: key.NewBinding(
key.WithKeys("S"),
key.WithHelp("S", "toggle status"),
),
togglePagination: key.NewBinding(
key.WithKeys("P"),
key.WithHelp("P", "toggle pagination"),
),
toggleHelpMenu: key.NewBinding(
key.WithKeys("H"),
key.WithHelp("H", "toggle help"),
),
}
}
type model struct {
list list.Model
itemGenerator *randomItemGenerator
keys *listKeyMap
delegateKeys *delegateKeyMap
}
func newModel() model {
var (
itemGenerator randomItemGenerator
delegateKeys = newDelegateKeyMap()
listKeys = newListKeyMap()
)
// Make initial list of items
const numItems = 24
items := make([]list.Item, numItems)
for i := 0; i < numItems; i++ {
items[i] = itemGenerator.next()
}
// Setup list
delegate := newItemDelegate(delegateKeys)
groceryList := list.New(items, delegate, 0, 0)
groceryList.Title = "Groceries"
groceryList.Styles.Title = titleStyle
groceryList.AdditionalFullHelpKeys = func() []key.Binding {
return []key.Binding{
listKeys.toggleSpinner,
listKeys.insertItem,
listKeys.toggleTitleBar,
listKeys.toggleStatusBar,
listKeys.togglePagination,
listKeys.toggleHelpMenu,
}
}
return model{
list: groceryList,
keys: listKeys,
delegateKeys: delegateKeys,
itemGenerator: &itemGenerator,
}
}
func (m model) Init() tea.Cmd {
return nil
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmds []tea.Cmd
switch msg := msg.(type) {
case tea.WindowSizeMsg:
h, v := appStyle.GetFrameSize()
m.list.SetSize(msg.Width-h, msg.Height-v)
case tea.KeyMsg:
// Don't match any of the keys below if we're actively filtering.
if m.list.FilterState() == list.Filtering {
break
}
switch {
case key.Matches(msg, m.keys.toggleSpinner):
cmd := m.list.ToggleSpinner()
return m, cmd
case key.Matches(msg, m.keys.toggleTitleBar):
v := !m.list.ShowTitle()
m.list.SetShowTitle(v)
m.list.SetShowFilter(v)
m.list.SetFilteringEnabled(v)
return m, nil
case key.Matches(msg, m.keys.toggleStatusBar):
m.list.SetShowStatusBar(!m.list.ShowStatusBar())
return m, nil
case key.Matches(msg, m.keys.togglePagination):
m.list.SetShowPagination(!m.list.ShowPagination())
return m, nil
case key.Matches(msg, m.keys.toggleHelpMenu):
m.list.SetShowHelp(!m.list.ShowHelp())
return m, nil
case key.Matches(msg, m.keys.insertItem):
m.delegateKeys.remove.SetEnabled(true)
newItem := m.itemGenerator.next()
insCmd := m.list.InsertItem(0, newItem)
statusCmd := m.list.NewStatusMessage(statusMessageStyle("Added " + newItem.Title()))
return m, tea.Batch(insCmd, statusCmd)
}
}
// This will also call our delegate's update function.
newListModel, cmd := m.list.Update(msg)
m.list = newListModel
cmds = append(cmds, cmd)
return m, tea.Batch(cmds...)
}
func (m model) View() string {
return appStyle.Render(m.list.View())
}
func main() {
rand.Seed(time.Now().UTC().UnixNano())
if _, err := tea.NewProgram(newModel(), tea.WithAltScreen()).Run(); err != nil {
fmt.Println("Error running program:", err)
os.Exit(1)
}
}
|
