forked from Mirrors/bubbletea
96 lines
1.8 KiB
Go
96 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"github.com/charmbracelet/boba"
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)
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func main() {
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// Load some text to render
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content, err := ioutil.ReadFile("artichoke.md")
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if err != nil {
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fmt.Println("could not load file:", err)
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os.Exit(1)
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}
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// Use the full size of the terminal in its "Alternate Screen Buffer"
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boba.AltScreen()
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defer boba.ExitAltScreen()
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if err := boba.NewProgram(
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initialize(string(content)),
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update,
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view,
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).Start(); err != nil {
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fmt.Println("could not run program:", err)
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os.Exit(1)
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}
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}
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type terminalSizeMsg struct {
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width int
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height int
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err error
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}
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func (t terminalSizeMsg) Size() (int, int) { return t.width, t.height }
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func (t terminalSizeMsg) Error() error { return t.err }
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type model struct {
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err error
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content string
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ready bool
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pager pager.Model
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}
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func initialize(content string) func() (boba.Model, boba.Cmd) {
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return func() (boba.Model, boba.Cmd) {
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return model{
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content: content,
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}, getTerminalSize()
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}
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}
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func update(msg boba.Msg, mdl boba.Model) (boba.Model, boba.Cmd) {
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m, _ := mdl.(model)
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switch msg := msg.(type) {
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case boba.KeyMsg:
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if msg.Type == boba.KeyCtrlC {
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return m, boba.Quit
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}
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m.pager, _ = pager.Update(msg, m.pager)
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case terminalSizeMsg:
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if msg.Error() != nil {
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m.err = msg.Error()
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break
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}
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w, h := msg.Size()
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m.pager = pager.NewModel(w, h)
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m.pager.SetContent(m.content)
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m.ready = true
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}
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return m, nil
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}
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func view(mdl boba.Model) string {
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m, _ := mdl.(model)
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if m.err != nil {
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return "\nError:" + m.err.Error()
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} else if m.ready {
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return "\n" + pager.View(m.pager)
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}
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return "\nInitalizing..."
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}
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func getTerminalSize() boba.Cmd {
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return boba.GetTerminalSize(func(w, h int, err error) boba.TerminalSizeMsg {
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return terminalSizeMsg{width: w, height: h, err: err}
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})
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}
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