diff --git a/dlangui-monod-linux.dproj b/dlangui-monod-linux.dproj
index 57f959d9..77092165 100644
--- a/dlangui-monod-linux.dproj
+++ b/dlangui-monod-linux.dproj
@@ -351,6 +351,8 @@
     <Compile Include="src\dlangui\widgets\docks.d" />
     <Compile Include="src\dlangui\widgets\editors.d" />
     <Compile Include="src\dlangui\widgets\grid.d" />
+    <Compile Include="src\dlangui\widgets\groupbox.d" />
+    <Compile Include="src\dlangui\widgets\scrollbar.d" />
     <Compile Include="src\dlangui\widgets\layouts.d" />
     <Compile Include="src\dlangui\widgets\lists.d" />
     <Compile Include="src\dlangui\widgets\menu.d" />
diff --git a/dlangui-monod-osx.dproj b/dlangui-monod-osx.dproj
index 9bcd7891..fa8280d3 100644
--- a/dlangui-monod-osx.dproj
+++ b/dlangui-monod-osx.dproj
@@ -162,6 +162,8 @@
     <Compile Include="src\dlangui\widgets\docks.d" />
     <Compile Include="src\dlangui\widgets\editors.d" />
     <Compile Include="src\dlangui\widgets\grid.d" />
+    <Compile Include="src\dlangui\widgets\groupbox.d" />
+    <Compile Include="src\dlangui\widgets\scrollbar.d" />
     <Compile Include="src\dlangui\widgets\layouts.d" />
     <Compile Include="src\dlangui\widgets\lists.d" />
     <Compile Include="src\dlangui\widgets\menu.d" />
diff --git a/dlangui-monod-windows.dproj b/dlangui-monod-windows.dproj
index 8bfa6627..7d401108 100644
--- a/dlangui-monod-windows.dproj
+++ b/dlangui-monod-windows.dproj
@@ -153,6 +153,8 @@
     <Compile Include="src\dlangui\widgets\docks.d" />
     <Compile Include="src\dlangui\widgets\editors.d" />
     <Compile Include="src\dlangui\widgets\grid.d" />
+    <Compile Include="src\dlangui\widgets\groupbox.d" />
+    <Compile Include="src\dlangui\widgets\scrollbar.d" />
     <Compile Include="src\dlangui\widgets\layouts.d" />
     <Compile Include="src\dlangui\widgets\lists.d" />
     <Compile Include="src\dlangui\widgets\menu.d" />
diff --git a/dlangui-msvc.visualdproj b/dlangui-msvc.visualdproj
index 91d25095..1e132160 100644
--- a/dlangui-msvc.visualdproj
+++ b/dlangui-msvc.visualdproj
@@ -983,6 +983,7 @@
      <File path="src\dlangui\widgets\metadata.d" />
      <File path="src\dlangui\widgets\popup.d" />
      <File path="src\dlangui\widgets\scroll.d" />
+     <File path="src\dlangui\widgets\scrollbar.d" />
      <File path="src\dlangui\widgets\srcedit.d" />
      <File path="src\dlangui\widgets\statusline.d" />
      <File path="src\dlangui\widgets\styles.d" />
diff --git a/src/dlangui/package.d b/src/dlangui/package.d
index c675cd49..7727d6e2 100644
--- a/src/dlangui/package.d
+++ b/src/dlangui/package.d
@@ -59,6 +59,7 @@ public {
     import dlangui.graphics.drawbuf;
     import dlangui.widgets.widget;
     import dlangui.widgets.controls;
+    import dlangui.widgets.scrollbar;
     import dlangui.widgets.layouts;
     import dlangui.widgets.groupbox;
     import dlangui.widgets.lists;
diff --git a/src/dlangui/platforms/common/startup.d b/src/dlangui/platforms/common/startup.d
index e8881f1d..f3603261 100644
--- a/src/dlangui/platforms/common/startup.d
+++ b/src/dlangui/platforms/common/startup.d
@@ -321,6 +321,7 @@ void registerStandardWidgets() {
     import dlangui.widgets.widget;
     import dlangui.widgets.layouts;
     import dlangui.widgets.controls;
+    import dlangui.widgets.scrollbar;
     import dlangui.widgets.lists;
     import dlangui.widgets.combobox;
     import dlangui.widgets.editors;
diff --git a/src/dlangui/widgets/controls.d b/src/dlangui/widgets/controls.d
index 05bbcce4..f1ff04b8 100644
--- a/src/dlangui/widgets/controls.d
+++ b/src/dlangui/widgets/controls.d
@@ -1,8 +1,11 @@
 // Written in the D programming language.
 
 /**
+
+
 This module contains simple controls widgets implementation.
 
+
 TextWidget - static text
 
 ImageWidget - image
@@ -19,15 +22,12 @@ RadioButton - radio button
 
 CheckBox - button with check mark
 
-ScrollBar - scrollbar control
-
-SliderWidget - slider control
-
 UrlImageTextButton - URL link button
 
 CanvasWidget - for drawing arbitrary graphics
 
 
+Note: ScrollBar and SliderWidget are moved to dlangui.widgets.scrollbar
 
 Synopsis:
 
@@ -576,966 +576,6 @@ class Button : Widget {
 
 }
 
-/// scroll event handler interface
-interface OnScrollHandler {
-    /// handle scroll event
-    bool onScrollEvent(AbstractSlider source, ScrollEvent event);
-}
-
-/// base class for widgets like scrollbars and sliders
-class AbstractSlider : WidgetGroup {
-    protected int _minValue = 0;
-    protected int _maxValue = 100;
-    protected int _pageSize = 30;
-    protected int _position = 20;
-
-    /// create with ID parameter
-    this(string ID) {
-        super(ID);
-    }
-
-    /// scroll event listeners
-    Signal!OnScrollHandler scrollEvent;
-
-    /// returns slider position
-    @property int position() const { return _position; }
-    /// sets new slider position
-    @property AbstractSlider position(int newPosition) { 
-        if (_position != newPosition) {
-            _position = newPosition;
-            onPositionChanged();
-        }
-        return this;
-    }
-    protected void onPositionChanged() {
-        requestLayout();
-    }
-    /// returns slider range min value
-    @property int minValue() const { return _minValue; }
-    /// sets slider range min value
-    @property AbstractSlider minValue(int v) { _minValue = v; return this; }
-    /// returns slider range max value
-    @property int maxValue() const { return _maxValue; }
-    /// sets slider range max value
-    @property AbstractSlider maxValue(int v) { _maxValue = v; return this; }
-
-
-
-    /// page size (visible area size)
-    @property int pageSize() const { return _pageSize; }
-    /// set page size (visible area size)
-    @property AbstractSlider pageSize(int size) {
-        if (_pageSize != size) {
-            _pageSize = size;
-            //requestLayout();
-        }
-        return this;
-    }
-
-    /// set int property value, for ML loaders
-    //mixin(generatePropertySettersMethodOverride("setIntProperty", "int",
-    //      "minValue", "maxValue", "pageSize", "position"));
-    /// set int property value, for ML loaders
-    override bool setIntProperty(string name, int value) {
-        if (name.equal("orientation")) { // use same value for all sides
-            orientation = cast(Orientation)value;
-            return true;
-        }
-        mixin(generatePropertySetters("minValue", "maxValue", "pageSize", "position"));
-        return super.setIntProperty(name, value);
-    }
-
-    /// set new range (min and max values for slider)
-    AbstractSlider setRange(int min, int max) {
-        if (_minValue != min || _maxValue != max) {
-            _minValue = min;
-            _maxValue = max;
-            //requestLayout();
-        }
-        return this;
-    }
-
-    bool sendScrollEvent(ScrollAction action) {
-        return sendScrollEvent(action, _position);
-    }
-
-    bool sendScrollEvent(ScrollAction action, int position) {
-        if (!scrollEvent.assigned)
-            return false;
-        ScrollEvent event = new ScrollEvent(action, _minValue, _maxValue, _pageSize, position);
-        bool res = scrollEvent(this, event);
-        if (event.positionChanged) {
-            _position = event.position;
-            if (_position > _maxValue)
-                _position = _maxValue;
-            if (_position < _minValue)
-                _position = _minValue;
-            onPositionChanged();
-        }
-        return true;
-    }
-
-    protected Orientation _orientation = Orientation.Vertical;
-    /// returns scrollbar orientation (Vertical, Horizontal)
-    @property Orientation orientation() { return _orientation; }
-    /// sets scrollbar orientation
-    @property AbstractSlider orientation(Orientation value) { 
-        if (_orientation != value) {
-            _orientation = value; 
-            requestLayout(); 
-        }
-        return this; 
-    }
-
-}
-
-/// scroll bar - either vertical or horizontal
-class ScrollBar : AbstractSlider, OnClickHandler {
-    protected ImageButton _btnBack;
-    protected ImageButton _btnForward;
-    protected SliderButton _indicator;
-    protected PageScrollButton _pageUp;
-    protected PageScrollButton _pageDown;
-    protected Rect _scrollArea;
-    protected int _btnSize;
-    protected int _minIndicatorSize;
-
-
-
-    class PageScrollButton : Widget {
-        this(string ID) {
-            super(ID);
-            styleId = STYLE_PAGE_SCROLL;
-            trackHover = true;
-            clickable = true;
-        }
-    }
-
-    class SliderButton : ImageButton {
-        Point _dragStart;
-        int _dragStartPosition;
-        bool _dragging;
-        Rect _dragStartRect;
-
-        this(string resourceId) {
-            super("SLIDER", resourceId);
-            styleId = STYLE_SCROLLBAR_BUTTON;
-            trackHover = true;
-        }
-
-        /// process mouse event; return true if event is processed by widget.
-        override bool onMouseEvent(MouseEvent event) {
-            // support onClick
-            if (event.action == MouseAction.ButtonDown && event.button == MouseButton.Left) {
-                setState(State.Pressed);
-                _dragging = true;
-                _dragStart.x = event.x;
-                _dragStart.y = event.y;
-                _dragStartPosition = _position;
-                _dragStartRect = _pos;
-                sendScrollEvent(ScrollAction.SliderPressed, _position);
-                return true;
-            }
-            if (event.action == MouseAction.FocusOut && _dragging) {
-                debug(scrollbar) Log.d("ScrollBar slider dragging - FocusOut");
-                return true;
-            }
-            if (event.action == MouseAction.FocusIn && _dragging) {
-                debug(scrollbar) Log.d("ScrollBar slider dragging - FocusIn");
-                return true;
-            }
-            if (event.action == MouseAction.Move && _dragging) {
-                int delta = _orientation == Orientation.Vertical ? event.y - _dragStart.y : event.x - _dragStart.x;
-                debug(scrollbar) Log.d("ScrollBar slider dragging - Move delta=", delta);
-                Rect rc = _dragStartRect;
-                int offset;
-                int space;
-                if (_orientation == Orientation.Vertical) {
-                    rc.top += delta;
-                    rc.bottom += delta;
-                    if (rc.top < _scrollArea.top) {
-                        rc.top = _scrollArea.top;
-                        rc.bottom = _scrollArea.top + _dragStartRect.height;
-                    } else if (rc.bottom > _scrollArea.bottom) {
-                        rc.top = _scrollArea.bottom - _dragStartRect.height;
-                        rc.bottom = _scrollArea.bottom;
-                    }
-                    offset = rc.top - _scrollArea.top;
-                    space = _scrollArea.height - rc.height;
-                } else {
-                    rc.left += delta;
-                    rc.right += delta;
-                    if (rc.left < _scrollArea.left) {
-                        rc.left = _scrollArea.left;
-                        rc.right = _scrollArea.left + _dragStartRect.width;
-                    } else if (rc.right > _scrollArea.right) {
-                        rc.left = _scrollArea.right - _dragStartRect.width;
-                        rc.right = _scrollArea.right;
-                    }
-                    offset = rc.left - _scrollArea.left;
-                    space = _scrollArea.width - rc.width;
-                }
-                layoutButtons(rc);
-                //_pos = rc;
-                int position = cast(int)(space > 0 ? _minValue + cast(long)offset * (_maxValue - _minValue - _pageSize) / space : 0);
-                invalidate();
-                onIndicatorDragging(_dragStartPosition, position);
-                return true;
-            }
-            if (event.action == MouseAction.ButtonUp && event.button == MouseButton.Left) {
-                resetState(State.Pressed);
-                if (_dragging) {
-                    sendScrollEvent(ScrollAction.SliderReleased, _position);
-                    _dragging = false;
-                }
-                return true;
-            }
-            if (event.action == MouseAction.Move && trackHover) {
-                if (!(state & State.Hovered)) {
-                    debug(scrollbar) Log.d("Hover ", id);
-                    setState(State.Hovered);
-                }
-                return true;
-            }
-            if (event.action == MouseAction.Leave && trackHover) {
-                debug(scrollbar) Log.d("Leave ", id);
-                resetState(State.Hovered);
-                return true;
-            }
-            if (event.action == MouseAction.Cancel && trackHover) {
-                debug(scrollbar) Log.d("Cancel ? trackHover", id);
-                resetState(State.Hovered);
-                resetState(State.Pressed);
-                _dragging = false;
-                return true;
-            }
-            if (event.action == MouseAction.Cancel) {
-                debug(scrollbar) Log.d("SliderButton.onMouseEvent event.action == MouseAction.Cancel");
-                resetState(State.Pressed);
-                _dragging = false;
-                return true;
-            }
-            return false;
-        }
-
-    }
-
-    protected bool onIndicatorDragging(int initialPosition, int currentPosition) {
-        _position = currentPosition;
-        return sendScrollEvent(ScrollAction.SliderMoved, currentPosition);
-    }
-
-    private bool calcButtonSizes(int availableSize, ref int spaceBackSize, ref int spaceForwardSize, ref int indicatorSize) {
-        int dv = _maxValue - _minValue;
-        if (_pageSize >= dv) {
-            // full size
-            spaceBackSize = spaceForwardSize = 0;
-            indicatorSize = availableSize;
-            return false;
-        }
-        if (dv < 0)
-            dv = 0;
-        indicatorSize = dv ? _pageSize * availableSize / dv : _minIndicatorSize;
-        if (indicatorSize < _minIndicatorSize)
-            indicatorSize = _minIndicatorSize;
-        if (indicatorSize >= availableSize) {
-            // full size
-            spaceBackSize = spaceForwardSize = 0;
-            indicatorSize = availableSize;
-            return false;
-        }
-        int spaceLeft = availableSize - indicatorSize;
-        int topv = _position - _minValue;
-        int bottomv = _position + _pageSize - _minValue;
-        if (topv < 0)
-            topv = 0;
-        if (bottomv > dv)
-            bottomv = dv;
-        bottomv = dv - bottomv;
-        spaceBackSize = cast(int)(cast(long)spaceLeft * topv / (topv + bottomv));
-        spaceForwardSize = spaceLeft - spaceBackSize;
-        return true;
-    }
-
-    /// returns scrollbar orientation (Vertical, Horizontal)
-    override @property Orientation orientation() { return _orientation; }
-    /// sets scrollbar orientation
-    override @property AbstractSlider orientation(Orientation value) { 
-        if (_orientation != value) {
-            _orientation = value; 
-            _btnBack.drawableId = style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_BUTTON_UP : ATTR_SCROLLBAR_BUTTON_LEFT);
-            _btnForward.drawableId = style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_BUTTON_DOWN : ATTR_SCROLLBAR_BUTTON_RIGHT);
-            _indicator.drawableId = style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_INDICATOR_VERTICAL : ATTR_SCROLLBAR_INDICATOR_HORIZONTAL);
-            requestLayout(); 
-        }
-        return this; 
-    }
-
-    /// set string property value, for ML loaders
-    override bool setStringProperty(string name, string value) {
-        if (name.equal("orientation")) {
-            if (value.equal("Vertical") || value.equal("vertical"))
-                orientation = Orientation.Vertical;
-            else
-                orientation = Orientation.Horizontal;
-            return true;
-        }
-        return super.setStringProperty(name, value);
-    }
-
-
-    /// empty parameter list constructor - for usage by factory
-    this() {
-        this(null, Orientation.Vertical);
-    }
-    /// create with ID parameter
-    this(string ID, Orientation orient = Orientation.Vertical) {
-        super(ID);
-        styleId = STYLE_SCROLLBAR;
-        _orientation = orient;
-        _btnBack = new ImageButton("BACK", style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_BUTTON_UP : ATTR_SCROLLBAR_BUTTON_LEFT));
-        _btnForward = new ImageButton("FORWARD", style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_BUTTON_DOWN : ATTR_SCROLLBAR_BUTTON_RIGHT));
-        _pageUp = new PageScrollButton("PAGE_UP");
-        _pageDown = new PageScrollButton("PAGE_DOWN");
-        _btnBack.styleId = STYLE_SCROLLBAR_BUTTON_TRANSPARENT;
-        _btnForward.styleId = STYLE_SCROLLBAR_BUTTON_TRANSPARENT;
-        _indicator = new SliderButton(style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_INDICATOR_VERTICAL : ATTR_SCROLLBAR_INDICATOR_HORIZONTAL));
-        addChild(_btnBack);
-        addChild(_btnForward);
-        addChild(_indicator);
-        addChild(_pageUp);
-        addChild(_pageDown);
-        _btnBack.focusable = false;
-        _btnForward.focusable = false;
-        _indicator.focusable = false;
-        _pageUp.focusable = false;
-        _pageDown.focusable = false;
-        _btnBack.click = &onClick;
-        _btnForward.click = &onClick;
-        _pageUp.click = &onClick;
-        _pageDown.click = &onClick;
-    }
-
-    override void measure(int parentWidth, int parentHeight) { 
-        Point sz;
-        _btnBack.measure(parentWidth, parentHeight);
-        _btnForward.measure(parentWidth, parentHeight);
-        _indicator.measure(parentWidth, parentHeight);
-        _pageUp.measure(parentWidth, parentHeight);
-        _pageDown.measure(parentWidth, parentHeight);
-        _btnSize = _btnBack.measuredWidth;
-        _minIndicatorSize = _orientation == Orientation.Vertical ? _indicator.measuredHeight : _indicator.measuredWidth;
-        if (_btnSize < _minIndicatorSize)
-            _btnSize = _minIndicatorSize;
-        if (_btnSize < _btnForward.measuredWidth)
-            _btnSize = _btnForward.measuredWidth;
-        if (_btnSize < _btnForward.measuredHeight)
-            _btnSize = _btnForward.measuredHeight;
-        if (_btnSize < _btnBack.measuredHeight)
-            _btnSize = _btnBack.measuredHeight;
-        static if (BACKEND_GUI) {
-            if (_btnSize < 16)
-                _btnSize = 16;
-        }
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            sz.x = _btnSize;
-            sz.y = _btnSize * 5; // min height
-        } else {
-            // horizontal
-            sz.y = _btnSize;
-            sz.x = _btnSize * 5; // min height
-        }
-        measuredContent(parentWidth, parentHeight, sz.x, sz.y);
-    }
-
-    override protected void onPositionChanged() {
-        if (!needLayout)
-            layoutButtons();
-    }
-
-    /// hide controls when scroll is not possible
-    protected void updateState() {
-        bool canScroll = _maxValue - _minValue > _pageSize;
-        if (canScroll) {
-            _btnBack.setState(State.Enabled);
-            _btnForward.setState(State.Enabled);
-            _indicator.visibility = Visibility.Visible;
-            _pageUp.visibility = Visibility.Visible;
-            _pageDown.visibility = Visibility.Visible;
-        } else {
-            _btnBack.resetState(State.Enabled);
-            _btnForward.resetState(State.Enabled);
-            _indicator.visibility = Visibility.Gone;
-            _pageUp.visibility = Visibility.Gone;
-            _pageDown.visibility = Visibility.Gone;
-        }
-        cancelLayout();
-    }
-
-    override void cancelLayout() {
-        _btnBack.cancelLayout();
-        _btnForward.cancelLayout();
-        _indicator.cancelLayout();
-        _pageUp.cancelLayout();
-        _pageDown.cancelLayout();
-        super.cancelLayout();
-    }
-
-    protected void layoutButtons() {
-        Rect irc = _scrollArea;
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            int spaceBackSize, spaceForwardSize, indicatorSize;
-            bool indicatorVisible = calcButtonSizes(_scrollArea.height, spaceBackSize, spaceForwardSize, indicatorSize);
-            irc.top += spaceBackSize;
-            irc.bottom -= spaceForwardSize;
-            layoutButtons(irc);
-        } else {
-            // horizontal
-            int spaceBackSize, spaceForwardSize, indicatorSize;
-            bool indicatorVisible = calcButtonSizes(_scrollArea.width, spaceBackSize, spaceForwardSize, indicatorSize);
-            irc.left += spaceBackSize;
-            irc.right -= spaceForwardSize;
-            layoutButtons(irc);
-        }
-        updateState();
-        cancelLayout();
-    }
-
-    protected void layoutButtons(Rect irc) {
-        Rect r;
-        _indicator.visibility = Visibility.Visible;
-        if (_orientation == Orientation.Vertical) {
-            _indicator.layout(irc);
-            if (_scrollArea.top < irc.top) {
-                r = _scrollArea;
-                r.bottom = irc.top;
-                _pageUp.layout(r);
-                _pageUp.visibility = Visibility.Visible;
-            } else {
-                _pageUp.visibility = Visibility.Invisible;
-            }
-            if (_scrollArea.bottom > irc.bottom) {
-                r = _scrollArea;
-                r.top = irc.bottom;
-                _pageDown.layout(r);
-                _pageDown.visibility = Visibility.Visible;
-            } else {
-                _pageDown.visibility = Visibility.Invisible;
-            }
-        } else {
-            _indicator.layout(irc);
-            if (_scrollArea.left < irc.left) {
-                r = _scrollArea;
-                r.right = irc.left;
-                _pageUp.layout(r);
-                _pageUp.visibility = Visibility.Visible;
-            } else {
-                _pageUp.visibility = Visibility.Invisible;
-            }
-            if (_scrollArea.right > irc.right) {
-                r = _scrollArea;
-                r.left = irc.right;
-                _pageDown.layout(r);
-                _pageDown.visibility = Visibility.Visible;
-            } else {
-                _pageDown.visibility = Visibility.Invisible;
-            }
-        }
-    }
-
-    override void layout(Rect rc) {
-        _needLayout = false;
-        applyMargins(rc);
-        applyPadding(rc);
-        Rect r;
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            // buttons
-            int backbtnpos = rc.top + _btnSize;
-            int fwdbtnpos = rc.bottom - _btnSize;
-            r = rc;
-            r.bottom = backbtnpos;
-            _btnBack.layout(r);
-            r = rc;
-            r.top = fwdbtnpos;
-            _btnForward.layout(r);
-            // indicator
-            r = rc;
-            r.top = backbtnpos;
-            r.bottom = fwdbtnpos;
-            _scrollArea = r;
-        } else {
-            // horizontal
-            int backbtnpos = rc.left + _btnSize;
-            int fwdbtnpos = rc.right - _btnSize;
-            r = rc;
-            r.right = backbtnpos;
-            _btnBack.layout(r);
-            r = rc;
-            r.left = fwdbtnpos;
-            _btnForward.layout(r);
-            // indicator
-            r = rc;
-            r.left = backbtnpos;
-            r.right = fwdbtnpos;
-            _scrollArea = r;
-        }
-        layoutButtons();
-        _pos = rc;
-    }
-
-    override bool onClick(Widget source) {
-        Log.d("Scrollbar.onClick ", source.id);
-        if (source.compareId("BACK"))
-            return sendScrollEvent(ScrollAction.LineUp, position);
-        if (source.compareId("FORWARD"))
-            return sendScrollEvent(ScrollAction.LineDown, position);
-        if (source.compareId("PAGE_UP"))
-            return sendScrollEvent(ScrollAction.PageUp, position);
-        if (source.compareId("PAGE_DOWN"))
-            return sendScrollEvent(ScrollAction.PageDown, position);
-        return true;
-    }
-
-    /// handle mouse wheel events
-    override bool onMouseEvent(MouseEvent event) {
-        if (visibility != Visibility.Visible)
-            return false;
-        if (event.action == MouseAction.Wheel) {
-            int delta = event.wheelDelta;
-            if (delta > 0)
-                sendScrollEvent(ScrollAction.LineUp, position);
-            else if (delta < 0)
-                sendScrollEvent(ScrollAction.LineDown, position);
-            return true;
-        }
-        return super.onMouseEvent(event);
-    }
-
-    /// Draw widget at its position to buffer
-    override void onDraw(DrawBuf buf) {
-        if (visibility != Visibility.Visible && !buf.isClippedOut(_pos))
-            return;
-        super.onDraw(buf);
-        Rect rc = _pos;
-        applyMargins(rc);
-        applyPadding(rc);
-        auto saver = ClipRectSaver(buf, rc, alpha);
-        _btnForward.onDraw(buf);
-        _btnBack.onDraw(buf);
-        _pageUp.onDraw(buf);
-        _pageDown.onDraw(buf);
-        _indicator.onDraw(buf);
-    }
-}
-
-/// scroll bar - either vertical or horizontal
-class SliderWidget : AbstractSlider, OnClickHandler {
-    protected SliderButton _indicator;
-    protected PageScrollButton _pageUp;
-    protected PageScrollButton _pageDown;
-    protected Rect _scrollArea;
-    protected int _btnSize;
-    protected int _minIndicatorSize;
-
-    class PageScrollButton : Widget {
-        this(string ID) {
-            super(ID);
-            styleId = STYLE_PAGE_SCROLL;
-            trackHover = true;
-            clickable = true;
-        }
-    }
-
-    class SliderButton : ImageButton {
-        Point _dragStart;
-        int _dragStartPosition;
-        bool _dragging;
-        Rect _dragStartRect;
-
-        this(string resourceId) {
-            super("SLIDER", resourceId);
-            styleId = STYLE_SCROLLBAR_BUTTON;
-            trackHover = true;
-        }
-
-        /// process mouse event; return true if event is processed by widget.
-        override bool onMouseEvent(MouseEvent event) {
-            // support onClick
-            if (event.action == MouseAction.ButtonDown && event.button == MouseButton.Left) {
-                setState(State.Pressed);
-                _dragging = true;
-                _dragStart.x = event.x;
-                _dragStart.y = event.y;
-                _dragStartPosition = _position;
-                _dragStartRect = _pos;
-                sendScrollEvent(ScrollAction.SliderPressed, _position);
-                return true;
-            }
-            if (event.action == MouseAction.FocusOut && _dragging) {
-                debug(scrollbar) Log.d("ScrollBar slider dragging - FocusOut");
-                return true;
-            }
-            if (event.action == MouseAction.FocusIn && _dragging) {
-                debug(scrollbar) Log.d("ScrollBar slider dragging - FocusIn");
-                return true;
-            }
-            if (event.action == MouseAction.Move && _dragging) {
-                int delta = _orientation == Orientation.Vertical ? event.y - _dragStart.y : event.x - _dragStart.x;
-                debug(scrollbar) Log.d("ScrollBar slider dragging - Move delta=", delta);
-                Rect rc = _dragStartRect;
-                int offset;
-                int space;
-                if (_orientation == Orientation.Vertical) {
-                    rc.top += delta;
-                    rc.bottom += delta;
-                    if (rc.top < _scrollArea.top) {
-                        rc.top = _scrollArea.top;
-                        rc.bottom = _scrollArea.top + _dragStartRect.height;
-                    } else if (rc.bottom > _scrollArea.bottom) {
-                        rc.top = _scrollArea.bottom - _dragStartRect.height;
-                        rc.bottom = _scrollArea.bottom;
-                    }
-                    offset = rc.top - _scrollArea.top;
-                    space = _scrollArea.height - rc.height;
-                } else {
-                    rc.left += delta;
-                    rc.right += delta;
-                    if (rc.left < _scrollArea.left) {
-                        rc.left = _scrollArea.left;
-                        rc.right = _scrollArea.left + _dragStartRect.width;
-                    } else if (rc.right > _scrollArea.right) {
-                        rc.left = _scrollArea.right - _dragStartRect.width;
-                        rc.right = _scrollArea.right;
-                    }
-                    offset = rc.left - _scrollArea.left;
-                    space = _scrollArea.width - rc.width;
-                }
-                layoutButtons(rc);
-                //_pos = rc;
-                int position = cast(int)(space > 0 ? _minValue + cast(long)offset * (_maxValue - _minValue - _pageSize) / space : 0);
-                invalidate();
-                onIndicatorDragging(_dragStartPosition, position);
-                return true;
-            }
-            if (event.action == MouseAction.ButtonUp && event.button == MouseButton.Left) {
-                resetState(State.Pressed);
-                if (_dragging) {
-                    sendScrollEvent(ScrollAction.SliderReleased, _position);
-                    _dragging = false;
-                }
-                return true;
-            }
-            if (event.action == MouseAction.Move && trackHover) {
-                if (!(state & State.Hovered)) {
-                    debug(scrollbar) Log.d("Hover ", id);
-                    setState(State.Hovered);
-                }
-                return true;
-            }
-            if (event.action == MouseAction.Leave && trackHover) {
-                debug(scrollbar) Log.d("Leave ", id);
-                resetState(State.Hovered);
-                return true;
-            }
-            if (event.action == MouseAction.Cancel && trackHover) {
-                debug(scrollbar) Log.d("Cancel ? trackHover", id);
-                resetState(State.Hovered);
-                resetState(State.Pressed);
-                _dragging = false;
-                return true;
-            }
-            if (event.action == MouseAction.Cancel) {
-                debug(scrollbar) Log.d("SliderButton.onMouseEvent event.action == MouseAction.Cancel");
-                resetState(State.Pressed);
-                _dragging = false;
-                return true;
-            }
-            return false;
-        }
-
-    }
-
-    protected bool onIndicatorDragging(int initialPosition, int currentPosition) {
-        _position = currentPosition;
-        return sendScrollEvent(ScrollAction.SliderMoved, currentPosition);
-    }
-
-    private bool calcButtonSizes(int availableSize, ref int spaceBackSize, ref int spaceForwardSize, ref int indicatorSize) {
-        int dv = _maxValue - _minValue;
-        if (_pageSize >= dv) {
-            // full size
-            spaceBackSize = spaceForwardSize = 0;
-            indicatorSize = availableSize;
-            return false;
-        }
-        if (dv < 0)
-            dv = 0;
-        indicatorSize = dv ? _pageSize * availableSize / dv : _minIndicatorSize;
-        if (indicatorSize < _minIndicatorSize)
-            indicatorSize = _minIndicatorSize;
-        if (indicatorSize >= availableSize) {
-            // full size
-            spaceBackSize = spaceForwardSize = 0;
-            indicatorSize = availableSize;
-            return false;
-        }
-        int spaceLeft = availableSize - indicatorSize;
-        int topv = _position - _minValue;
-        int bottomv = _position + _pageSize - _minValue;
-        if (topv < 0)
-            topv = 0;
-        if (bottomv > dv)
-            bottomv = dv;
-        bottomv = dv - bottomv;
-        spaceBackSize = cast(int)(cast(long)spaceLeft * topv / (topv + bottomv));
-        spaceForwardSize = spaceLeft - spaceBackSize;
-        return true;
-    }
-
-    /// returns scrollbar orientation (Vertical, Horizontal)
-    override @property Orientation orientation() { return _orientation; }
-    /// sets scrollbar orientation
-    override @property AbstractSlider orientation(Orientation value) { 
-        if (_orientation != value) {
-            _orientation = value; 
-            _indicator.drawableId = style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_INDICATOR_VERTICAL : ATTR_SCROLLBAR_INDICATOR_HORIZONTAL);
-            requestLayout(); 
-        }
-        return this; 
-    }
-
-    /// set string property value, for ML loaders
-    override bool setStringProperty(string name, string value) {
-        if (name.equal("orientation")) {
-            if (value.equal("Vertical") || value.equal("vertical"))
-                orientation = Orientation.Vertical;
-            else
-                orientation = Orientation.Horizontal;
-            return true;
-        }
-        return super.setStringProperty(name, value);
-    }
-
-
-    /// empty parameter list constructor - for usage by factory
-    this() {
-        this(null, Orientation.Horizontal);
-    }
-    /// create with ID parameter
-    this(string ID, Orientation orient = Orientation.Horizontal) {
-        super(ID);
-        styleId = STYLE_SLIDER;
-        _orientation = orient;
-        _pageSize = 1;
-        _pageUp = new PageScrollButton("PAGE_UP");
-        _pageDown = new PageScrollButton("PAGE_DOWN");
-        _indicator = new SliderButton(style.customDrawableId(_orientation == Orientation.Vertical ? ATTR_SCROLLBAR_INDICATOR_VERTICAL : ATTR_SCROLLBAR_INDICATOR_HORIZONTAL));
-        addChild(_indicator);
-        addChild(_pageUp);
-        addChild(_pageDown);
-        _indicator.focusable = false;
-        _pageUp.focusable = false;
-        _pageDown.focusable = false;
-        _pageUp.click = &onClick;
-        _pageDown.click = &onClick;
-    }
-
-    override void measure(int parentWidth, int parentHeight) { 
-        Point sz;
-        _indicator.measure(parentWidth, parentHeight);
-        _pageUp.measure(parentWidth, parentHeight);
-        _pageDown.measure(parentWidth, parentHeight);
-        _minIndicatorSize = _orientation == Orientation.Vertical ? _indicator.measuredHeight : _indicator.measuredWidth;
-        _btnSize = _minIndicatorSize;
-        if (_btnSize < _minIndicatorSize)
-            _btnSize = _minIndicatorSize;
-        static if (BACKEND_GUI) {
-            if (_btnSize < 16)
-                _btnSize = 16;
-        }
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            sz.x = _btnSize;
-            sz.y = _btnSize * 5; // min height
-        } else {
-            // horizontal
-            sz.y = _btnSize;
-            sz.x = _btnSize * 5; // min height
-        }
-        measuredContent(parentWidth, parentHeight, sz.x, sz.y);
-    }
-
-    override protected void onPositionChanged() {
-        if (!needLayout)
-            layoutButtons();
-    }
-
-    /// hide controls when scroll is not possible
-    protected void updateState() {
-        bool canScroll = _maxValue - _minValue > _pageSize;
-        if (canScroll) {
-            _indicator.visibility = Visibility.Visible;
-            _pageUp.visibility = Visibility.Visible;
-            _pageDown.visibility = Visibility.Visible;
-        } else {
-            _indicator.visibility = Visibility.Gone;
-            _pageUp.visibility = Visibility.Gone;
-            _pageDown.visibility = Visibility.Gone;
-        }
-        cancelLayout();
-    }
-
-    override void cancelLayout() {
-        _indicator.cancelLayout();
-        _pageUp.cancelLayout();
-        _pageDown.cancelLayout();
-        super.cancelLayout();
-    }
-
-    protected void layoutButtons() {
-        Rect irc = _scrollArea;
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            int spaceBackSize, spaceForwardSize, indicatorSize;
-            bool indicatorVisible = calcButtonSizes(_scrollArea.height, spaceBackSize, spaceForwardSize, indicatorSize);
-            irc.top += spaceBackSize;
-            irc.bottom -= spaceForwardSize;
-            layoutButtons(irc);
-        } else {
-            // horizontal
-            int spaceBackSize, spaceForwardSize, indicatorSize;
-            bool indicatorVisible = calcButtonSizes(_scrollArea.width, spaceBackSize, spaceForwardSize, indicatorSize);
-            irc.left += spaceBackSize;
-            irc.right -= spaceForwardSize;
-            layoutButtons(irc);
-        }
-        updateState();
-        cancelLayout();
-    }
-
-    protected void layoutButtons(Rect irc) {
-        Rect r;
-        _indicator.visibility = Visibility.Visible;
-        if (_orientation == Orientation.Vertical) {
-            _indicator.layout(irc);
-            if (_scrollArea.top < irc.top) {
-                r = _scrollArea;
-                r.bottom = irc.top;
-                _pageUp.layout(r);
-                _pageUp.visibility = Visibility.Visible;
-            } else {
-                _pageUp.visibility = Visibility.Invisible;
-            }
-            if (_scrollArea.bottom > irc.bottom) {
-                r = _scrollArea;
-                r.top = irc.bottom;
-                _pageDown.layout(r);
-                _pageDown.visibility = Visibility.Visible;
-            } else {
-                _pageDown.visibility = Visibility.Invisible;
-            }
-        } else {
-            _indicator.layout(irc);
-            if (_scrollArea.left < irc.left) {
-                r = _scrollArea;
-                r.right = irc.left;
-                _pageUp.layout(r);
-                _pageUp.visibility = Visibility.Visible;
-            } else {
-                _pageUp.visibility = Visibility.Invisible;
-            }
-            if (_scrollArea.right > irc.right) {
-                r = _scrollArea;
-                r.left = irc.right;
-                _pageDown.layout(r);
-                _pageDown.visibility = Visibility.Visible;
-            } else {
-                _pageDown.visibility = Visibility.Invisible;
-            }
-        }
-    }
-
-    override void layout(Rect rc) {
-        _needLayout = false;
-        applyMargins(rc);
-        applyPadding(rc);
-        Rect r;
-        if (_orientation == Orientation.Vertical) {
-            // vertical
-            // buttons
-            // indicator
-            r = rc;
-            _scrollArea = r;
-        } else {
-            // horizontal
-            // indicator
-            r = rc;
-            _scrollArea = r;
-        }
-        layoutButtons();
-        _pos = rc;
-    }
-
-    override bool onClick(Widget source) {
-        Log.d("Scrollbar.onClick ", source.id);
-        if (source.compareId("PAGE_UP"))
-            return sendScrollEvent(ScrollAction.PageUp, position);
-        if (source.compareId("PAGE_DOWN"))
-            return sendScrollEvent(ScrollAction.PageDown, position);
-        return true;
-    }
-
-    /// handle mouse wheel events
-    override bool onMouseEvent(MouseEvent event) {
-        if (visibility != Visibility.Visible)
-            return false;
-        if (event.action == MouseAction.Wheel) {
-            int delta = event.wheelDelta;
-            if (delta > 0)
-                sendScrollEvent(ScrollAction.LineUp, position);
-            else if (delta < 0)
-                sendScrollEvent(ScrollAction.LineDown, position);
-            return true;
-        }
-        return super.onMouseEvent(event);
-    }
-
-    /// Draw widget at its position to buffer
-    override void onDraw(DrawBuf buf) {
-        if (visibility != Visibility.Visible && !buf.isClippedOut(_pos))
-            return;
-        Rect rc = _pos;
-        applyMargins(rc);
-        auto saver = ClipRectSaver(buf, rc, alpha);
-        DrawableRef bg = backgroundDrawable;
-        if (!bg.isNull) {
-            Rect r = rc;
-            if (_orientation == Orientation.Vertical) {
-                int dw = bg.width;
-                r.left += (rc.width - dw)/2;
-                r.right = r.left + dw;
-            } else {
-                int dw = bg.height;
-                r.top += (rc.height - dw)/2;
-                r.bottom = r.top + dw;
-            }
-            bg.drawTo(buf, r, state);
-        }
-        applyPadding(rc);
-        if (state & State.Focused) {
-            rc.expand(FOCUS_RECT_PADDING, FOCUS_RECT_PADDING);
-            drawFocusRect(buf, rc);
-        }
-        _needDraw = false;
-        _pageUp.onDraw(buf);
-        _pageDown.onDraw(buf);
-        _indicator.onDraw(buf);
-    }
-}
-
 
 /// interface - slot for onClick
 interface OnDrawHandler {
diff --git a/src/dlangui/widgets/lists.d b/src/dlangui/widgets/lists.d
index d8ca353a..46e7e0e3 100644
--- a/src/dlangui/widgets/lists.d
+++ b/src/dlangui/widgets/lists.d
@@ -20,6 +20,7 @@ module dlangui.widgets.lists;
 
 import dlangui.widgets.widget;
 import dlangui.widgets.controls;
+import dlangui.widgets.scrollbar;
 import dlangui.widgets.layouts;
 import dlangui.core.signals;
 
diff --git a/src/dlangui/widgets/scroll.d b/src/dlangui/widgets/scroll.d
index a055689f..966b23d5 100644
--- a/src/dlangui/widgets/scroll.d
+++ b/src/dlangui/widgets/scroll.d
@@ -72,6 +72,7 @@ module dlangui.widgets.scroll;
 
 import dlangui.widgets.widget;
 import dlangui.widgets.controls;
+import dlangui.widgets.scrollbar;
 import std.conv;
 
 /** Scroll bar visibility mode. */