diff --git a/button.go b/button.go
index f8b80df..d8ece2d 100644
--- a/button.go
+++ b/button.go
@@ -5,13 +5,15 @@ import "git.tebibyte.media/tomo/tomo/input"
 import "git.tebibyte.media/tomo/tomo/event"
 import "git.tebibyte.media/tomo/objects/layouts"
 
+var _ tomo.Object = new(Button)
+
 var buttonLayout     = layouts.Row { true        }
 var iconButtonLayout = layouts.Row { true        }
 var bothButtonLayout = layouts.Row { false, true }
 
 // Button is a clickable button.
 type Button struct {
-	tomo.ContainerBox
+	box tomo.ContainerBox
 
 	label *Label
 	icon  *Icon
@@ -24,33 +26,45 @@ type Button struct {
 
 // NewButton creates a new button with the specified text.
 func NewButton (text string) *Button {
-	box := &Button {
-		ContainerBox: tomo.NewContainerBox(),
-		label:        NewLabel(text),
+	button := &Button {
+		box:   tomo.NewContainerBox(),
+		label: NewLabel(text),
 	}
-	box.SetRole(tomo.R("objects", "Button"))
-	box.label.SetAttr(tomo.AAlign(tomo.AlignMiddle, tomo.AlignMiddle))
-	box.SetAttr(tomo.ALayout(buttonLayout))
-	box.SetText(text)
+	button.box.SetRole(tomo.R("objects", "Button"))
+	button.label.SetAttr(tomo.AAlign(tomo.AlignMiddle, tomo.AlignMiddle))
+	button.box.SetAttr(tomo.ALayout(buttonLayout))
+	button.SetText(text)
 	
-	box.SetInputMask(true)
-	box.OnButtonDown(box.handleButtonDown)
-	box.OnButtonUp(box.handleButtonUp)
-	box.OnKeyDown(box.handleKeyDown)
-	box.OnKeyUp(box.handleKeyUp)
-	box.SetFocusable(true)
-	return box
+	button.box.SetInputMask(true)
+	button.box.OnButtonDown(button.handleButtonDown)
+	button.box.OnButtonUp(button.handleButtonUp)
+	button.box.OnKeyDown(button.handleKeyDown)
+	button.box.OnKeyUp(button.handleKeyUp)
+	button.box.SetFocusable(true)
+	return button
+}
+
+// GetBox returns the underlying box.
+func (this *Button) GetBox () tomo.Box {
+	return this.box
+}
+
+// SetFocused sets whether or not this button has keyboard focus. If set to
+// true, this method will steal focus away from whichever object currently has
+// focus.
+func (this *Button) SetFocused (focused bool) {
+	this.box.SetFocused(focused)
 }
 
 // SetText sets the text of the button's label.
 func (this *Button) SetText (text string) {
 	this.label.SetText(text)
 	if this.labelActive && text == "" {
-		this.Remove(this.label)
+		this.box.Remove(this.label)
 		this.labelActive = false
 	}
 	if !this.labelActive && text != "" {
-		this.Add(this.label)
+		this.box.Add(this.label)
 		this.labelActive = true
 	}
 	this.applyLayout()
@@ -59,7 +73,7 @@ func (this *Button) SetText (text string) {
 // SetIcon sets an icon for this button. Setting the icon to IconUnknown will
 // remove it.
 func (this *Button) SetIcon (id tomo.Icon) {
-	if this.icon != nil { this.Remove(this.icon) }
+	if this.icon != nil { this.box.Remove(this.icon) }
 
 	var icon *Icon; if id != tomo.IconUnknown {
 		icon = NewIcon(id, tomo.IconSizeSmall)
@@ -67,9 +81,9 @@ func (this *Button) SetIcon (id tomo.Icon) {
 	this.icon = icon
 
 	if this.icon != nil {
-		this.Insert(this.icon, this.label)
+		this.box.Insert(this.icon, this.label)
 	}
-	this.SetTag("icon", this.icon != nil)
+	this.box.SetTag("icon", this.icon != nil)
 	this.applyLayout()
 }
 
@@ -80,11 +94,11 @@ func (this *Button) OnClick (callback func ()) event.Cookie {
 
 func (this *Button) applyLayout () {
 	if this.labelActive && this.icon == nil {
-		this.SetAttr(tomo.ALayout(buttonLayout))
+		this.box.SetAttr(tomo.ALayout(buttonLayout))
 	} else if !this.labelActive && this.icon != nil {
-		this.SetAttr(tomo.ALayout(iconButtonLayout))
+		this.box.SetAttr(tomo.ALayout(iconButtonLayout))
 	} else {
-		this.SetAttr(tomo.ALayout(bothButtonLayout))
+		this.box.SetAttr(tomo.ALayout(bothButtonLayout))
 	}
 }
 
@@ -106,7 +120,7 @@ func (this *Button) handleButtonDown (button input.Button) bool {
 
 func (this *Button) handleButtonUp (button input.Button) bool {
 	if !isClickingButton(button) { return false }
-	if this.Window().MousePosition().In(this.Bounds()) {
+	if this.box.Window().MousePosition().In(this.box.Bounds()) {
 		this.on.click.Broadcast()
 	}
 	return true