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https://github.com/taigrr/bubbletea.git
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ade8203c21
It was a valiant effort, and the implementation was solid and dependable, but at the end of the day we can achieve the same functionality in a much simpler fashion with commands, especially because Go is not held to the same restrictions as Elm.
89 lines
1.7 KiB
Go
89 lines
1.7 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"log"
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"github.com/charmbracelet/boba"
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input "github.com/charmbracelet/boba/textinput"
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)
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type Model struct {
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textInput input.Model
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err error
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}
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type tickMsg struct{}
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type errMsg error
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func main() {
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p := boba.NewProgram(
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initialize,
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update,
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view,
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)
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if err := p.Start(); err != nil {
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log.Fatal(err)
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}
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}
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func initialize() (boba.Model, boba.Cmd) {
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inputModel := input.NewModel()
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inputModel.Placeholder = "Pikachu"
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inputModel.Focus()
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return Model{
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textInput: inputModel,
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err: nil,
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}, input.Blink(inputModel)
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}
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func update(msg boba.Msg, model boba.Model) (boba.Model, boba.Cmd) {
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var cmd boba.Cmd
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m, ok := model.(Model)
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if !ok {
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// When we encounter errors in Update we simply add the error to the
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// model so we can handle it in the view. We could also return a command
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// that does something else with the error, like logs it via IO.
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return Model{
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err: errors.New("could not perform assertion on model in update"),
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}, nil
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}
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switch msg := msg.(type) {
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case boba.KeyMsg:
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switch msg.Type {
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case boba.KeyCtrlC:
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fallthrough
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case boba.KeyEsc:
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fallthrough
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case boba.KeyEnter:
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return m, boba.Quit
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}
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// We handle errors just like any other message
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case errMsg:
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m.err = msg
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return m, nil
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}
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m.textInput, cmd = input.Update(msg, m.textInput)
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return m, cmd
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}
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func view(model boba.Model) string {
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m, ok := model.(Model)
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if !ok {
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return "Oh no: could not perform assertion on model."
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} else if m.err != nil {
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return fmt.Sprintf("Uh oh: %s", m.err)
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}
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return fmt.Sprintf(
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"What’s your favorite Pokémon?\n\n%s\n\n%s",
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input.View(m.textInput),
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"(esc to quit)",
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) + "\n"
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}
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