views: help

ui/controller.go

@@ -96,6 +96,11 @@ func quit(g *gocui.Gui, v *gocui.View) error {
 	return gocui.ErrQuit
 }
 
+func Help(g *gocui.Gui, v *gocui.View) error {
+	maxX, maxY := g.Size()
+	return views.SetHelp(g, 0, -1, maxX, maxY)
+}
+
 func (c *controller) setKeyBinding(g *gocui.Gui) error {
 	err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit)
 	if err != nil {
@@ -112,6 +117,11 @@ func (c *controller) setKeyBinding(g *gocui.Gui) error {
 		return err
 	}
 
+	err = g.SetKeybinding("", gocui.KeyCtrlH, gocui.ModNone, Help)
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
 

ui/views/help.go

@@ -0,0 +1,24 @@
+package views
+
+import (
+	"fmt"
+
+	"github.com/jroimartin/gocui"
+)
+
+const (
+	HELP = "help"
+)
+
+func SetHelp(g *gocui.Gui, x0, y0, x1, y1 int) error {
+	v, err := g.SetView(HELP, x0-1, y0, x1, y1)
+	if err != nil {
+		if err != gocui.ErrUnknownView {
+			return err
+		}
+	}
+	v.Frame = false
+	fmt.Fprintln(v, "HELP")
+	_, err = g.SetCurrentView(HELP)
+	return err
+}