Migrate to github from personal host

screen.go

@@ -0,0 +1,39 @@
+package main
+
+import "github.com/nsf/termbox-go"
+
+type Screen interface {
+	handleKeyEvent(event termbox.Event) int
+	performLayout()
+	drawScreen(style Style)
+}
+
+const (
+	BROWSER_SCREEN_INDEX = iota
+	ABOUT_SCREEN_INDEX
+	EXIT_SCREEN_INDEX
+)
+
+func defaultScreensForData(db *BoltDB) []Screen {
+	var view_port ViewPort
+
+	browser_screen := BrowserScreen{db: db, view_port: view_port}
+	about_screen := AboutScreen(0)
+	screens := [...]Screen{
+		&browser_screen,
+		&about_screen,
+	}
+
+	return screens[:]
+}
+
+func drawBackground(bg termbox.Attribute) {
+	termbox.Clear(0, bg)
+}
+
+func layoutAndDrawScreen(screen Screen, style Style) {
+	screen.performLayout()
+	drawBackground(style.default_bg)
+	screen.drawScreen(style)
+	termbox.Flush()
+}