[view] ListView: add selected style

src/main/haxework/view/list/ListView.hx

@@ -180,6 +180,13 @@ class ListView<D> extends GroupView {
                     item.visible = true;
                     item.item_index = index;
                     item.data = filteredData[item.item_index];
+                    if (
+                    selected != null && selected.indexOf(item.data) > -1 ?
+                    item.style.add("selected") :
+                    item.style.remove("selected")
+                    ) {
+                        item.style = item.style;
+                    }
                 }
             }
         }

src/main/haxework/view/theme/StyleId.hx

@@ -6,6 +6,18 @@ abstract StyleId(Array<String>) {
         this = value != null ? value : [];
     }
 
+    public function add(value:String):Bool {
+        if (this.indexOf(value) == -1) {
+            this.push(value);
+            return true;
+        }
+        return false;
+    }
+
+    public inline function remove(value:String):Bool {
+        return this.remove(value);
+    }
+
     @:to public inline function toArray():Array<String> {
         return this;
     }

src/main/haxework/view/theme/Theme.hx

@@ -104,6 +104,12 @@ class Theme implements ITheme {
         register(new Style("text1", [
             "skin.background.color" => colors.light.diff(16),
         ], ["text"]));
+        register(new Style("text0.selected", [
+            "font.color" => colors.active,
+        ], ["text0"]));
+        register(new Style("text1.selected", [
+            "font.color" => colors.active,
+        ], ["text1"]));
         register(new Style("label", [
             "geometry.padding" => Box.fromArray([8, 2]),
         ], ["text"]));