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package main
import (
"fmt"
"github.com/charmbracelet/bubbletea"
)
// Types
type UI struct {
calc Calculator
windowWidth int // Width of the window measured in characters.
}
// Interface Implementations
func (ui UI) Init() tea.Cmd {
return nil
}
func (ui UI) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
ui.windowWidth = msg.Width
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c", "q":
return ui, tea.Quit
}
}
return ui, nil
}
func (ui UI) View() string {
var s string
for _, f := range ui.calc.stack {
s += fmt.Sprintf("%f\n", f)
}
horizBar := make([]byte, ui.windowWidth)
for i := range horizBar {
horizBar[i] = '-'
}
s += string(horizBar) + "\n"
s += fmt.Sprintf("| %*s |\n", ui.windowWidth-4, ui.calc.buffer)
s += string(horizBar)
return s
}
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