Servers sorting by ping and players count.

For now only on "Servers" tab, and REQUIRES custom go-gtk build
(see https://github.com/mattn/go-gtk/issues/290#issuecomment-262127956)

ui/mainwindow_init.go

@@ -442,6 +442,10 @@ func (m *MainWindow) InitializeTabs() {
     // ToDo: remembering it to configuration storage.
     m.all_servers_store_sortable.SetSortColumnId(m.column_pos["Servers"]["Name"], gtk.SORT_ASCENDING)
 
+    // Sorting functions.
+    m.all_servers_store_sortable.SetSortFunc(m.column_pos["Servers"]["Players"], m.sortServersByPlayers)
+    m.all_servers_store_sortable.SetSortFunc(m.column_pos["Servers"]["Ping"], m.sortServersByPing)
+
     // Selection changed signal, which will update server's short info pane.
     m.all_servers.Connect("cursor-changed", m.showShortServerInformation)
 

ui/mainwindow_servers_sorting.go

@@ -0,0 +1,55 @@
+package ui
+
+import (
+    // stdlib
+    "strconv"
+    "strings"
+
+    // other
+    "github.com/mattn/go-gtk/glib"
+    "github.com/mattn/go-gtk/gtk"
+)
+
+func (m *MainWindow) sortServersByName() {
+
+}
+
+func (m *MainWindow) sortServersByPlayers(model *gtk.TreeModel, a *gtk.TreeIter, b *gtk.TreeIter) int {
+    var players1_raw glib.GValue
+    var players2_raw glib.GValue
+    model.GetValue(a, m.column_pos["Servers"]["Players"], &players1_raw)
+    model.GetValue(b, m.column_pos["Servers"]["Players"], &players2_raw)
+
+    players1_online := strings.Split(players1_raw.GetString(), "/")[0]
+    players2_online := strings.Split(players2_raw.GetString(), "/")[0]
+
+    if len(players1_online) > 0 && len(players2_online) > 0 {
+        players1, _ := strconv.Atoi(players1_online)
+        players2, _ := strconv.Atoi(players2_online)
+        if players1 > players2 {
+            return -1
+        } else {
+            return 1
+        }
+    }
+
+    return -1
+}
+
+func (m *MainWindow) sortServersByPing(model *gtk.TreeModel, a *gtk.TreeIter, b *gtk.TreeIter) int {
+    var ping1_raw glib.GValue
+    var ping2_raw glib.GValue
+    model.GetValue(a, m.column_pos["Servers"]["Ping"], &ping1_raw)
+    model.GetValue(b, m.column_pos["Servers"]["Ping"], &ping2_raw)
+
+    ping1, _ := strconv.Atoi(ping1_raw.GetString())
+    ping2, _ := strconv.Atoi(ping2_raw.GetString())
+
+    if ping1 < ping2 {
+        return 1
+    } else {
+        return -1
+    }
+
+    return -1
+}