diff --git a/radio.go b/radio.go
index ea123f9..5945481 100644
--- a/radio.go
+++ b/radio.go
@@ -1,150 +1,150 @@
-package clui
-
-import (
-	xs "github.com/huandu/xstrings"
-	term "github.com/nsf/termbox-go"
-)
-
-/*
-Radio button control. Unite a few radios in one radio group to
-make a user select one of available choices.
-*/
-type Radio struct {
-	BaseControl
-	group    *RadioGroup
-	selected bool
-
-	onChange func(bool)
-}
-
-/*
-NewRadio creates a new radio button.
-view - is a View that manages the control
-parent - is container that keeps the control. The same View can be a view and a parent at the same time.
-width - is minimal width of the control.
-title - radio title.
-scale - the way of scaling the control when the parent is resized. Use DoNotScale constant if the
-control should keep its original size.
-*/
-func CreateRadio(parent Control, width int, title string, scale int) *Radio {
-	c := new(Radio)
-	c.BaseControl = NewBaseControl()
-
-	if width == AutoSize {
-		width = xs.Len(title) + 4
-	}
-
-	c.parent = parent
-
-	c.SetSize(width, 1) // TODO: only one line heigth is supported at that moment
-	c.SetConstraints(width, 1)
-	c.SetTitle(title)
-	c.SetTabStop(true)
-	c.SetScale(scale)
-
-	c.onChange = nil
-
-	if parent != nil {
-		parent.AddChild(c)
-	}
-
-	return c
-}
-
-// Repaint draws the control on its View surface
-func (c *Radio) Draw() {
-	if c.hidden {
-		return
-	}
-
-	PushAttributes()
-	defer PopAttributes()
-
-	x, y := c.Pos()
-	w, h := c.Size()
-
-	fg, bg := RealColor(c.fg, c.Style(), ColorControlText), RealColor(c.bg, c.Style(), ColorControlBack)
-	if !c.Enabled() {
-		fg, bg = RealColor(c.fg, c.Style(), ColorControlDisabledText), RealColor(c.bg, c.Style(), ColorControlDisabledBack)
-	} else if c.Active() {
-		fg, bg = RealColor(c.fg, c.Style(), ColorControlActiveText), RealColor(c.bg, c.Style(), ColorControlActiveBack)
-	}
-
-	parts := []rune(SysObject(ObjRadio))
-	cOpen, cClose, cEmpty, cCheck := parts[0], parts[1], parts[2], parts[3]
-	cState := cEmpty
-	if c.selected {
-		cState = cCheck
-	}
-
-	SetTextColor(fg)
-	SetBackColor(bg)
-	FillRect(x, y, w, h, ' ')
-	if w < 3 {
-		return
-	}
-
-	PutChar(x, y, cOpen)
-	PutChar(x+2, y, cClose)
-	PutChar(x+1, y, cState)
-
-	if w < 5 {
-		return
-	}
-
-	shift, text := AlignColorizedText(c.title, w-4, c.align)
-	DrawText(x+4+shift, y, text)
-}
-
-/*
-ProcessEvent processes all events come from the control parent. If a control
-processes an event it should return true. If the method returns false it means
-that the control do not want or cannot process the event and the caller sends
-the event to the control parent.
-The control processes only space button and mouse clicks to make control selected. Deselecting control is not possible: one has to click another radio of the radio group to deselect this button
-*/
-func (c *Radio) ProcessEvent(event Event) bool {
-	if (!c.Active() && event.Type == EventKey) || !c.Enabled() {
-		return false
-	}
-
-	if (event.Type == EventKey && event.Key == term.KeySpace) || event.Type == EventClick {
-		if c.group == nil {
-			c.SetSelected(true)
-		} else {
-			c.group.SelectItem(c)
-		}
-		return true
-	}
-
-	return false
-}
-
-// SetSelected makes the button selected. One should not use
-// the method directly, it is for RadioGroup control
-func (c *Radio) SetSelected(val bool) {
-	c.selected = val
-
-	if c.onChange != nil {
-		go c.onChange(val)
-	}
-}
-
-// Selected returns if the radio is selected
-func (c *Radio) Selected() bool {
-	return c.selected
-}
-
-// SetGroup sets the radio group to which the radio belongs
-func (c *Radio) SetGroup(group *RadioGroup) {
-	c.group = group
-}
-
-// OnChange sets the callback that is called whenever the state
-// of the Radio is changed. Argument of callback is the current
-func (c *Radio) OnChange(fn func(bool)) {
-	c.mtx.Lock()
-	defer c.mtx.Unlock()
-
-	c.onChange = fn
-}
+package clui
+
+import (
+	xs "github.com/huandu/xstrings"
+	term "github.com/nsf/termbox-go"
+)
+
+/*
+Radio button control. Unite a few radios in one radio group to
+make a user select one of available choices.
+*/
+type Radio struct {
+	BaseControl
+	group    *RadioGroup
+	selected bool
+
+	onChange func(bool)
+}
+
+/*
+NewRadio creates a new radio button.
+view - is a View that manages the control
+parent - is container that keeps the control. The same View can be a view and a parent at the same time.
+width - is minimal width of the control.
+title - radio title.
+scale - the way of scaling the control when the parent is resized. Use DoNotScale constant if the
+control should keep its original size.
+*/
+func CreateRadio(parent Control, width int, title string, scale int) *Radio {
+	c := new(Radio)
+	c.BaseControl = NewBaseControl()
+
+	if width == AutoSize {
+		width = xs.Len(title) + 4
+	}
+
+	c.parent = parent
+
+	c.SetSize(width, 1) // TODO: only one line heigth is supported at that moment
+	c.SetConstraints(width, 1)
+	c.SetTitle(title)
+	c.SetTabStop(true)
+	c.SetScale(scale)
+
+	c.onChange = nil
+
+	if parent != nil {
+		parent.AddChild(c)
+	}
+
+	return c
+}
+
+// Repaint draws the control on its View surface
+func (c *Radio) Draw() {
+	if c.hidden {
+		return
+	}
+
+	PushAttributes()
+	defer PopAttributes()
+
+	x, y := c.Pos()
+	w, h := c.Size()
+
+	fg, bg := RealColor(c.fg, c.Style(), ColorControlText), RealColor(c.bg, c.Style(), ColorControlBack)
+	if !c.Enabled() {
+		fg, bg = RealColor(c.fg, c.Style(), ColorControlDisabledText), RealColor(c.bg, c.Style(), ColorControlDisabledBack)
+	} else if c.Active() {
+		fg, bg = RealColor(c.fg, c.Style(), ColorControlActiveText), RealColor(c.bg, c.Style(), ColorControlActiveBack)
+	}
+
+	parts := []rune(SysObject(ObjRadio))
+	cOpen, cClose, cEmpty, cCheck := parts[0], parts[1], parts[2], parts[3]
+	cState := cEmpty
+	if c.selected {
+		cState = cCheck
+	}
+
+	SetTextColor(fg)
+	SetBackColor(bg)
+	FillRect(x, y, w, h, ' ')
+	if w < 3 {
+		return
+	}
+
+	PutChar(x, y, cOpen)
+	PutChar(x+2, y, cClose)
+	PutChar(x+1, y, cState)
+
+	if w < 5 {
+		return
+	}
+
+	shift, text := AlignColorizedText(c.title, w-4, c.align)
+	DrawText(x+4+shift, y, text)
+}
+
+/*
+ProcessEvent processes all events come from the control parent. If a control
+processes an event it should return true. If the method returns false it means
+that the control do not want or cannot process the event and the caller sends
+the event to the control parent.
+The control processes only space button and mouse clicks to make control selected. Deselecting control is not possible: one has to click another radio of the radio group to deselect this button
+*/
+func (c *Radio) ProcessEvent(event Event) bool {
+	if (!c.Active() && event.Type == EventKey) || !c.Enabled() {
+		return false
+	}
+
+	if (event.Type == EventKey && event.Key == term.KeySpace) || event.Type == EventClick {
+		if c.group == nil {
+			c.SetSelected(true)
+		} else {
+			c.group.SelectItem(c)
+		}
+		return true
+	}
+
+	return false
+}
+
+// SetSelected makes the button selected. One should not use
+// the method directly, it is for RadioGroup control
+func (c *Radio) SetSelected(val bool) {
+	c.selected = val
+
+	if c.onChange != nil {
+		go c.onChange(val)
+	}
+}
+
+// Selected returns if the radio is selected
+func (c *Radio) Selected() bool {
+	return c.selected
+}
+
+// SetGroup sets the radio group to which the radio belongs
+func (c *Radio) SetGroup(group *RadioGroup) {
+	c.group = group
+}
+
+// OnChange sets the callback that is called whenever the state
+// of the Radio is changed. Argument of callback is the current
+func (c *Radio) OnChange(fn func(bool)) {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+
+	c.onChange = fn
+}