Hide empty button pages

Partially solves #946
Partially solves #999

hmi/dev/nspanel_eu_code/buttonpage02.txt

@@ -19,8 +19,21 @@ Page buttonpage02
             {
                 vis 255,0
                 vis button_back,1
-                vis page_index,1
                 vis page_label,1
+                if(is_buttonpage01==1)
+                {
+                    page_index.txt+="â—‹"
+                }
+                page_index.txt+="●"
+                if(is_buttonpage03==1)
+                {
+                    page_index.txt+="â—‹"
+                }
+                if(is_buttonpage04==1)
+                {
+                    page_index.txt+="â—‹"
+                }
+                vis page_index,1
             }
         
         Postinitialize Event
@@ -70,7 +83,7 @@ Text page_index
         Dragging           : 0
         Send Component ID  : on press and release
         Associated Keyboard: none
-        Text               : ○●○○
+        Text               : 
         Max. Text Size     : 12
     
 Text button01pic
@@ -777,13 +790,28 @@ TouchCap swipe
                 // From Left to Right
                 if(swipec>swipedx)
                 {
-                    page buttonpage01
+                    if(is_buttonpage01==1)
+                    {
+                        page buttonpage01
+                    }else
+                    {
+                        page home
+                    }
                 }
                 // Right to Left
                 swipec2=0-swipedx
                 if(swipec<swipec2)
                 {
-                    page buttonpage03
+                    if(is_buttonpage03==1)
+                    {
+                        page buttonpage03
+                    }else if(is_buttonpage04==1)
+                    {
+                        page buttonpage04
+                    }else
+                    {
+                        page home
+                    }
                 }
             }
             // Touch has ended, y
@@ -793,13 +821,43 @@ TouchCap swipe
                 // From Up to Down
                 if(swipec>100)
                 {
-                    //page
+                    if(is_buttonpage01==1)
+                    {
+                        page home
+                    }else
+                    {
+                        if(is_buttonpage04==1)
+                        {
+                            page buttonpage04
+                        }else if(is_buttonpage03==1)
+                        {
+                            page buttonpage03
+                        }else
+                        {
+                            page home
+                        }
+                    }
                 }
                 // Down to Up
-                swipec2=0-swipedy
+                swipec=0-swipedy
                 if(swipec<-100)
                 {
-                    //page
+                    if(is_buttonpage03==1&&is_buttonpage04==1)
+                    {
+                        page buttonpage04
+                    }else if(is_buttonpage03==1||is_buttonpage04==1)
+                    {
+                        page home
+                    }else
+                    {
+                        if(is_buttonpage01==1)
+                        {
+                            page buttonpage01
+                        }else
+                        {
+                            page home
+                        }
+                    }
                 }
             }