ui skeleton

1 files changed, 48 insertions, 0 deletions

diff --git a/ui.go b/ui.go
new file mode 100644
index 0000000..03286ec
--- /dev/null
+++ b/ui.go
@@ -0,0 +1,48 @@
+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
+}