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118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
package ui
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import (
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"github.com/gdamore/tcell/v2"
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"github.com/jordanorelli/astro-domu/internal/exit"
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"github.com/jordanorelli/astro-domu/internal/wire"
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"github.com/jordanorelli/blammo"
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)
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type UI struct {
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*blammo.Log
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screen tcell.Screen
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mode Mode
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client *wire.Client
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}
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func (ui *UI) Run() {
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ui.client = &wire.Client{
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Log: ui.Child("client"),
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Host: "127.0.0.1",
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Port: 12805,
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}
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notifications, err := ui.client.Dial()
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if err != nil {
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exit.WithMessage(1, "unable to dial server: %v", err)
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}
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go ui.handleNotifications(notifications)
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screen, err := tcell.NewScreen()
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if err != nil {
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exit.WithMessage(1, "unable to create a screen: %v", err)
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}
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ui.screen = screen
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ui.Debug("sceen created")
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if err := screen.Init(); err != nil {
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exit.WithMessage(1, "unable to initialize screen: %v", err)
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}
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ui.Debug("screen initialized")
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width, height := screen.Size()
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ui.Debug("screen width: %d", width)
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ui.Debug("screen height: %d", height)
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ui.Debug("screen colors: %v", screen.Colors())
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ui.Debug("screen has mouse: %v", screen.HasMouse())
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ui.mode = &boxWalker{
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width: 10,
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height: 6,
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}
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ui.Info("running ui")
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if ui.run() {
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ui.Info("user requested close")
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ui.Info("closing client")
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ui.client.Close()
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ui.Info("client closed")
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ui.Info("finalizing screen")
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}
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ui.Info("run loop done, shutting down")
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screen.Fini()
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}
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func (ui *UI) handleNotifications(c <-chan wire.Response) {
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for n := range c {
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ui.Info("ignoring notification: %v", n)
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}
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ui.Info("notifications channel is closed so we must be done")
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ui.Info("clearing and finalizing screen from notifications goroutine")
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ui.screen.Clear()
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ui.screen.Fini()
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}
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// writeString writes a string in the given style from left to right beginning
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// at the location (x, y). Writing of the screen just fails silently so don't
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// do that.
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func (ui *UI) writeString(x, y int, s string, style tcell.Style) {
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width, height := ui.screen.Size()
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if y > height {
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return
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}
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for i, r := range []rune(s) {
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x := x + i
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if x > width {
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return
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}
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ui.screen.SetContent(x, y, r, nil, style)
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}
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}
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func (ui *UI) run() bool {
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ui.screen.Clear()
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ui.mode.draw(ui)
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for {
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e := ui.screen.PollEvent()
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if e == nil {
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ui.Info("run loop sees nil event, breaking out")
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// someone else shut us down, so return false
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return false
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}
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switch v := e.(type) {
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case *tcell.EventKey:
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key := v.Key()
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if key == tcell.KeyCtrlC {
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ui.Info("saw ctrl+c keyboard input, shutting down")
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// we want to shut things down
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return true
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}
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}
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ui.mode.handleEvent(ui, e)
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ui.screen.Clear()
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ui.mode.draw(ui)
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ui.screen.Show()
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}
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}
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