added history limit and fixed formatting

main_windows.go

@@ -27,8 +27,8 @@ var (
 
 	dlg              *mainDialog
 	dlgOriginalTitle string
-	
-	history []string
+
+	history      []string
 	historyIndex = 0
 )
 
@@ -74,6 +74,16 @@ func uiUpdateAddress() {
 	}
 }
 
+func addToHistory(command string) {
+	// limit history to 20 items
+	if len(history) > 20 {
+		history = append(history[:0], history[0+1:]...)
+	}
+
+	history = append(history, command)
+	historyIndex = len(history)
+}
+
 func runGraphicalUi() (err error) {
 	dlg = new(mainDialog)
 	if err := dlg.init(); err != nil {
@@ -132,30 +142,30 @@ func runGraphicalUi() (err error) {
 			if len(history) == 0 {
 				return
 			}
-			
+
 			if key == walk.KeyUp {
-				if historyIndex == 0 { 
+				if historyIndex == 0 {
 					return
 				}
-				
+
 				historyIndex -= 1
 				dlg.ui.rconInput.SetText(history[historyIndex])
-			}else{
+			} else {
 				if (historyIndex + 1) >= len(history) {
 					return
 				}
-			
+
 				historyIndex += 1
 				dlg.ui.rconInput.SetText(history[historyIndex])
 			}
-			
+
 			return
 		}
-	
+
 		if key != walk.KeyReturn {
 			return
 		}
-		
+
 		if address == nil {
 			uiLogError("No server configured.")
 			return
@@ -166,10 +176,9 @@ func runGraphicalUi() (err error) {
 
 		uiLog(address.String() + "> " + cmd)
 		sendRcon(cmd)
-		
+
 		// add to history
-		history = append(history, cmd)
-		historyIndex = len(history)
+		addToHistory(cmd)
 	})
 
 	// When window is initialized we can let a secondary routine print all