[hw] rename haxework package to hw

src/main/hw/view/data/ButtonGroup.hx

@@ -0,0 +1,76 @@
+package hw.view.data;
+
+import hw.view.theme.StyleId;
+import hw.view.form.ToggleButtonView;
+import hw.view.data.DataView.Factory;
+import haxe.EnumTools;
+import hw.view.layout.HorizontalLayout;
+import hw.view.layout.ILayout;
+
+using hw.utils.StringUtil;
+
+class ButtonGroup<D> extends DataView<D, ToggleButtonView> {
+
+    public var selected(default, set):D;
+    public var buttonStyle(default, set):StyleId;
+
+    public function new(?layout:ILayout) {
+        super(layout != null ? layout : new HorizontalLayout());
+        factory = buildFactory();
+        onDataSelect.connect(function(value:D) selected = value);
+    }
+
+    // ToDo: enum equals
+    private function dataIndex(value:D):Int {
+        for (i in 0...data.length) {
+            if (Reflect.isEnumValue(value)) {
+                if (EnumValueTools.equals(cast value, cast data[i])) {
+                    return i;
+                }
+            } else {
+                if (value == data[i]) {
+                    return i;
+                }
+            }
+        }
+        return -1;
+    }
+
+    private function set_selected(value:D):D {
+        selected = value;
+        var index = dataIndex(value);
+        for (i in 0...dataViews.length) {
+            var view = dataViews[i];
+            view.on = i == index;
+        }
+        return selected;
+    }
+
+    private function set_buttonStyle(value:StyleId):StyleId {
+        if (buttonStyle != value) {
+            buttonStyle = value;
+            for (view in dataViews) {
+                view.style = buttonStyle;
+            }
+        }
+        return buttonStyle;
+    }
+
+    override private function rebuild():Void {
+        super.rebuild();
+        for (view in dataViews) {
+            view.style = buttonStyle;
+        }
+    }
+
+    public static function buildFactory<D>(?label:D -> String):Factory<D, ToggleButtonView> {
+        if (label == null) {
+            label = function(value:D) return Std.string(value).title();
+        }
+        return function(index:Int, value:D):ToggleButtonView {
+            var result = new ToggleButtonView();
+            result.text = label(value);
+            return result;
+        }
+    }
+}