combo box styles reworked

examples/example1/src/main.d

@@ -530,11 +530,17 @@ extern (C) int UIAppMain(string[] args) {
 		// row 3
 		table.addChild((new TextWidget(null, "Param 3"d)).alignment(Align.Right | Align.VCenter));
 		table.addChild((new EditLine("edit3", "Parameter 3 value"d)).layoutWidth(FILL_PARENT));
-
+        // normal readonly combo box
         ComboBox combo1 = new ComboBox("combo1", ["item value 1"d, "item value 2"d, "item value 3"d, "item value 4"d, "item value 5"d, "item value 6"d]);
 		table.addChild((new TextWidget(null, "Combo box param"d)).alignment(Align.Right | Align.VCenter));
-        combo1.selectedItemIndex(3);
+        combo1.selectedItemIndex = 3;
 		table.addChild(combo1).layoutWidth(FILL_PARENT);
+        // disabled readonly combo box
+        ComboBox combo2 = new ComboBox("combo2", ["item value 1"d, "item value 2"d, "item value 3"d]);
+		table.addChild((new TextWidget(null, "Disabled combo box"d)).alignment(Align.Right | Align.VCenter));
+        combo2.enabled = false;
+        combo2.selectedItemIndex = 0;
+		table.addChild(combo2).layoutWidth(FILL_PARENT);
 
 		table.margins(Rect(10,10,10,10)).layoutWidth(FILL_PARENT);
 		tabs.addTab(table, "TAB_TABLE_LAYOUT"c);

res/theme_default.xml

@@ -149,7 +149,7 @@
         fontSize="16"
         />
     <style id="COMBO_BOX"
-        backgroundImageId="editbox_background"
+        backgroundImageId="btn_background"
         padding="2,2,2,2"
         margins="2,2,2,2"
         minWidth="40"
@@ -164,6 +164,12 @@
         fontFamily="SansSerif"
         fontSize="16"
         align="Left|VCenter"
+	focusRectColors="#000"
+        />
+    <style id="COMBO_BOX_BUTTON"
+        padding="2,2,2,2"
+        backgroundImageId="btn_background_transparent"
+        align="Center"
         />
     <style id="EDIT_BOX"
         backgroundImageId="editbox_background"

src/dlangui/widgets/combobox.d

@@ -80,6 +80,7 @@ class ComboBoxBase : HorizontalLayout, OnClickHandler {
 
     protected ImageButton createButton() {
         ImageButton res = new ImageButton("COMBOBOX_BUTTON", "scrollbar_btn_down");
+        res.styleId = "COMBO_BOX_BUTTON";
 		res.layoutWeight = 0;
         res.onClickListener = this;
         return res;
@@ -121,6 +122,8 @@ class ComboBoxBase : HorizontalLayout, OnClickHandler {
         super(ID);
         _adapter = adapter;
         _ownAdapter = ownAdapter;
+        styleId = "COMBO_BOX";
+        trackHover = true;
 		init();
     }
 
@@ -204,8 +207,8 @@ class ComboBox : ComboBoxBase {
 	}
 
     override protected Widget createSelectedItemWidget() {
-        TextWidget res = new TextWidget("COMBOBOX_BODY");
+        TextWidget res = new TextWidget("COMBO_BOX_BODY");
-		res.styleId = "COMBO_BOX";
+		res.styleId = "COMBO_BOX_BODY";
 		res.clickable = true;
         res.layoutWidth = FILL_PARENT;
         res.layoutHeight = WRAP_CONTENT;

src/dlangui/widgets/widget.d

@@ -333,7 +333,7 @@ class Widget {
 			if (p.bottom < dp.bottom)
 				p.bottom = dp.bottom;
 		}
-        if (focusable && focusRectColors) {
+        if ((focusable || ((state & State.Parent) && parent.focusable)) && focusRectColors) {
             // add two pixels to padding when focus rect is required - one pixel for focus rect, one for additional space
             p.offset(FOCUS_RECT_PADDING, FOCUS_RECT_PADDING);
         }
@@ -599,10 +599,10 @@ class Widget {
 
     protected bool _focusable;
     /// whether widget can be focused
-    @property bool focusable() { return _focusable; }
+    @property bool focusable() const { return _focusable; }
     @property Widget focusable(bool flg) { _focusable = flg; return this; }
 
-    @property bool focused() {
+    @property bool focused() const {
         return (window !is null && window.focusedWidget is this && (state & State.Focused));
     }
 
@@ -1264,15 +1264,15 @@ class Widget {
     }
 
     /// returns parent widget, null for top level widget
-    @property Widget parent() { return _parent; }
+    @property Widget parent() const { return cast(Widget)_parent; }
     /// sets parent for widget
     @property Widget parent(Widget parent) { _parent = parent; return this; }
     /// returns window (if widget or its parent is attached to window)
-    @property Window window() {
+    @property Window window() const {
-        Widget p = this;
+        Widget p = cast(Widget)this;
         while (p !is null) {
             if (p._window !is null)
-                return p._window;
+                return cast(Window)p._window;
             p = p.parent;
         }
         return null;