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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| // Package stopwatch provides a simple stopwatch component | ||
| package stopwatch | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "sync/atomic" | ||
| "time" | ||
|
|
||
| tea "github.com/charmbracelet/bubbletea" | ||
| ) | ||
|
|
||
| // Slightly adjusted version of https://github.com/charmbracelet/bubbles/blob/master/stopwatch/stopwatch.go | ||
|
|
||
| var lastID int64 | ||
|
|
||
| func nextID() int { | ||
| return int(atomic.AddInt64(&lastID, 1)) | ||
| } | ||
|
|
||
| // TickMsg is a message that is sent on every stopwatch tick | ||
| type TickMsg struct { | ||
| id int | ||
| } | ||
|
|
||
| // StartStopMsg is a message that controls if the stopwatch is running or not | ||
| type StartStopMsg struct { | ||
| running bool | ||
| startDuration time.Duration | ||
| } | ||
|
|
||
| // ResetMsg is a message that resets the stopwatch | ||
| type ResetMsg struct { | ||
| } | ||
|
|
||
| // Model for the stopwatch component | ||
| type Model struct { | ||
| id int | ||
| duration time.Duration | ||
| running bool | ||
| } | ||
|
|
||
| // New created a new stopwatch with a given interval | ||
| func New() Model { | ||
| return Model{ | ||
| id: nextID(), | ||
| duration: 0, | ||
| running: false, | ||
| } | ||
| } | ||
|
|
||
| // Init initiates the stopwatch component | ||
| func (m Model) Init() tea.Cmd { | ||
| return nil | ||
| } | ||
|
|
||
| // Start starts the stopwatch | ||
| func (m Model) Start(startDuration time.Duration) tea.Cmd { | ||
| return func() tea.Msg { | ||
| return StartStopMsg{running: true, startDuration: startDuration} | ||
| } | ||
| } | ||
|
|
||
| // Stop stops the stopwatch | ||
| func (m Model) Stop() tea.Cmd { | ||
| return func() tea.Msg { | ||
| return StartStopMsg{running: false} | ||
| } | ||
| } | ||
|
|
||
| // Reset resets the stopwatch | ||
| func (m Model) Reset() tea.Cmd { | ||
| return func() tea.Msg { | ||
| return ResetMsg{} | ||
| } | ||
| } | ||
|
|
||
| // Update handles the stopwatch tick | ||
| func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) { | ||
| switch msg := msg.(type) { | ||
| case TickMsg: | ||
| if msg.id != m.id || !m.running { | ||
| return m, nil | ||
| } | ||
|
|
||
| m.duration += time.Second | ||
| return m, tick(m.id) | ||
|
|
||
| case ResetMsg: | ||
| m.duration = 0 | ||
| m.running = false | ||
|
|
||
| case StartStopMsg: | ||
| if msg.running { | ||
| // Start | ||
| if m.running { | ||
| // Already running | ||
| return m, nil | ||
| } | ||
|
|
||
| m.id = nextID() | ||
| m.duration = msg.startDuration | ||
| m.running = true | ||
|
|
||
| return m, tick(m.id) | ||
| } | ||
|
|
||
| // Stop | ||
| m.running = false | ||
| return m, nil | ||
| } | ||
| return m, nil | ||
| } | ||
|
|
||
| // View of the stopwatch component | ||
| func (m Model) View() string { | ||
| duration := m.duration.Round(time.Second) | ||
|
|
||
| min := int(duration / time.Minute) | ||
| sec := int((duration % time.Minute) / time.Second) | ||
|
|
||
| return fmt.Sprintf("%02d:%02d", min, sec) | ||
| } | ||
|
|
||
| func tick(id int) tea.Cmd { | ||
| return tea.Tick(time.Second, func(_ time.Time) tea.Msg { | ||
| return TickMsg{id: id} | ||
| }) | ||
| } |
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