Implemented asynchronous event polling

lib/screen.go

@@ -3,11 +3,10 @@
 package mop
 
 import (
-	"fmt"
-	"github.com/michaeldv/just"
-	"github.com/nsf/termbox-go"
 	"regexp"
 	"strings"
+	"github.com/michaeldv/just"
+	"github.com/nsf/termbox-go"
 )
 
 // Can combine attributes and a single color using bitwise OR.
@@ -37,24 +36,6 @@ func Draw(stocks string) {
 	drawScreen(Format(message))
 }
 
-//-----------------------------------------------------------------------------
-func Refresh(profile string) {
-loop:
-	for {
-		switch ev := termbox.PollEvent(); ev.Type {
-		case termbox.EventKey:
-			if ev.Key == termbox.KeyEsc {
-				break loop
-			}
-		case termbox.EventResize:
-			// Draw(profile)
-			// x, y := termbox.Size()
-			str := fmt.Sprintf("(%d:%d)", ev.Width, ev.Height)
-			drawScreen(str + ": <red>Hello world</red>, how <white>are</white> <blue>you?</blue>")
-		}
-	}
-}
-
 //
 // Return regular expression that matches all possible color tags, i.e.
 // </?black>|</?red>| ... |</?white>
@@ -121,3 +102,7 @@ func drawScreen(str string) {
 	}
 	termbox.Flush()
 }
+
+func DrawScreen(str string) {
+        drawScreen(str)
+}

mop.go

@@ -3,20 +3,60 @@
 package main
 
 import (
+        "fmt"
+        "time"
 	"github.com/michaeldv/mop/lib"
 	"github.com/nsf/termbox-go"
 )
 
 //-----------------------------------------------------------------------------
-func main() {
-	profile := mop.LoadProfile()
-
+func initTermbox() {
 	err := termbox.Init()
 	if err != nil {
 		panic(err)
 	}
-	defer termbox.Close()
+}
+
+//-----------------------------------------------------------------------------
+func mainLoop(profile string) {
+        event_queue := make(chan termbox.Event)
+        event_tick := time.NewTicker(1 * time.Second)
+
+        go func() {
+                for {
+                        event_queue <- termbox.PollEvent()
+                }
+        }()
 
         mop.Draw(profile)
-        mop.Refresh(profile)
+loop:
+	for {
+                select {
+                case event := <- event_queue:
+        		switch event.Type {
+        		case termbox.EventKey:
+        			if event.Key == termbox.KeyEsc {
+        				break loop
+        			}
+        		case termbox.EventResize:
+        			// Draw(profile)
+        			// x, y := termbox.Size()
+        			str := fmt.Sprintf("(%d:%d)", event.Width, event.Height)
+        			mop.DrawScreen(str + ": <red>Hello world</red>, how <white>are</white> <blue>you?</blue>")
+        		}
+                case <-event_tick.C:
+			mop.DrawScreen(time.Now().Format("3:04:05pm PST"))
+                        //mop.Draw(profile)
+                }
+	}
+}
+
+//-----------------------------------------------------------------------------
+func main() {
+
+        initTermbox()
+	defer termbox.Close()
+
+	profile := mop.LoadProfile()
+        mainLoop(profile)
 }