* Pulled generic button code out of CheckBox into a new base class

AbstractButton.
* Added RadioButton and RadioButtonGroup.
* In the BBox test the border style can be switched now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21343 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kits/interface/layout/widget_layout_test/AbstractButton.cpp

@@ -0,0 +1,201 @@
+/*
+ * Copyright 2007, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#include "AbstractButton.h"
+
+#include <View.h>
+
+
+// #pragma mark - AbstractButton
+
+
+AbstractButton::AbstractButton(button_policy policy, BMessage* message,
+	BMessenger target)
+	: View(BRect(0, 0, 0, 0)),
+	  BInvoker(message, target),
+	  fPolicy(policy),
+	  fSelected(false),
+	  fPressed(false),
+	  fPressedInBounds(false)
+{
+}
+
+
+void
+AbstractButton::SetPolicy(button_policy policy)
+{
+	fPolicy = policy;
+}
+
+
+button_policy
+AbstractButton::Policy() const
+{
+	return fPolicy;
+}
+
+
+void
+AbstractButton::SetSelected(bool selected)
+{
+	if (selected != fSelected) {
+		fSelected = selected;
+		Invalidate();
+
+		// check whether to notify the listeners depending on the button policy
+		bool notify = false;
+		switch (fPolicy) {
+			case BUTTON_POLICY_TOGGLE_ON_RELEASE:
+			case BUTTON_POLICY_SELECT_ON_RELEASE:
+				// always notify on selection changes
+				notify = true;
+				break;
+			case BUTTON_POLICY_INVOKE_ON_RELEASE:
+				// only notify when the user interaction has been finished
+				notify = !fPressed;
+				break;
+		}
+
+		if (notify) {
+			// notify synchronous listeners
+			_NotifyListeners();
+
+			// send the message
+			if (Message()) {
+				BMessage message(*Message());
+				message.AddBool("selected", IsSelected());
+				InvokeNotify(&message);
+			}
+		}
+	}
+}
+
+
+bool
+AbstractButton::IsSelected() const
+{
+	return fSelected;
+}
+
+
+void
+AbstractButton::MouseDown(BPoint where, uint32 buttons, int32 modifiers)
+{
+	if (fPressed)
+		return;
+
+	fPressed = true;
+	_PressedUpdate(where);
+}
+
+
+void
+AbstractButton::MouseUp(BPoint where, uint32 buttons, int32 modifiers)
+{
+	if (!fPressed || (buttons & B_PRIMARY_MOUSE_BUTTON))
+		return;
+
+	_PressedUpdate(where);
+	fPressed = false;
+	if (fPressedInBounds) {
+		fPressedInBounds = false;
+
+		// update selected state according to policy
+		bool selected = fSelected;
+		switch (fPolicy) {
+			case BUTTON_POLICY_TOGGLE_ON_RELEASE:
+				selected = !fSelected;
+				break;
+			case BUTTON_POLICY_SELECT_ON_RELEASE:
+				selected = true;
+				break;
+			case BUTTON_POLICY_INVOKE_ON_RELEASE:
+				selected = false;
+				break;
+		}
+
+		SetSelected(selected);
+	}
+	Invalidate();
+}
+
+
+void
+AbstractButton::MouseMoved(BPoint where, uint32 buttons, int32 modifiers)
+{
+	if (!fPressed)
+		return;
+
+	_PressedUpdate(where);
+}
+
+
+void
+AbstractButton::AddListener(Listener* listener)
+{
+	if (listener && !fListeners.HasItem(listener))
+		fListeners.AddItem(listener);
+}
+
+
+void
+AbstractButton::RemoveListener(Listener* listener)
+{
+	if (listener)
+		fListeners.RemoveItem(listener);
+}
+
+
+bool
+AbstractButton::IsPressed() const
+{
+	return (fPressed && fPressedInBounds);
+}
+
+
+void
+AbstractButton::_PressedUpdate(BPoint where)
+{
+	bool pressedInBounds = Bounds().Contains(where);
+	if (pressedInBounds == fPressedInBounds)
+		return;
+
+	fPressedInBounds = pressedInBounds;
+
+	// update the selected state according to the button policy
+	switch (fPolicy) {
+		case BUTTON_POLICY_TOGGLE_ON_RELEASE:
+		case BUTTON_POLICY_SELECT_ON_RELEASE:
+			// nothing to do
+			break;
+		case BUTTON_POLICY_INVOKE_ON_RELEASE:
+			SetSelected(fPressedInBounds);
+			break;
+	}
+
+	Invalidate();
+}
+
+
+void
+AbstractButton::_NotifyListeners()
+{
+	if (!fListeners.IsEmpty()) {
+		BList listeners(fListeners);
+		for (int32 i = 0; Listener* listener = (Listener*)listeners.ItemAt(i);
+			 i++) {
+			listener->SelectionChanged(this);
+		}
+	}
+}
+
+
+// #pragma mark - AbstractButton::Listener
+
+
+AbstractButton::Listener::~Listener()
+{
+}
+

src/tests/kits/interface/layout/widget_layout_test/AbstractButton.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2007, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+#ifndef WIDGET_LAYOUT_TEST_ABSTRACT_BUTTON_H
+#define WIDGET_LAYOUT_TEST_ABSTRACT_BUTTON_H
+
+
+#include <Invoker.h>
+#include <List.h>
+
+#include "View.h"
+
+
+// button behavior policy
+enum button_policy {
+	BUTTON_POLICY_TOGGLE_ON_RELEASE,	// check box
+	BUTTON_POLICY_SELECT_ON_RELEASE,	// radio button
+	BUTTON_POLICY_INVOKE_ON_RELEASE		// button
+};
+
+
+// AbstractButton
+class AbstractButton : public View, public BInvoker {
+public:
+								AbstractButton(button_policy policy,
+									BMessage* message = NULL,
+									BMessenger target = BMessenger());
+
+			void				SetPolicy(button_policy policy);
+			button_policy		Policy() const;
+
+			void				SetSelected(bool selected);
+			bool				IsSelected() const;
+
+	virtual	void				MouseDown(BPoint where, uint32 buttons,
+									int32 modifiers);
+	virtual	void				MouseUp(BPoint where, uint32 buttons,
+									int32 modifiers);
+	virtual	void				MouseMoved(BPoint where, uint32 buttons,
+									int32 modifiers);
+
+public:
+			class Listener;
+
+			void				AddListener(Listener* listener);
+			void				RemoveListener(Listener* listener);
+
+protected:
+			bool				IsPressed() const;
+
+private:
+			void				_PressedUpdate(BPoint where);
+			void				_NotifyListeners();
+
+private:
+			button_policy		fPolicy;
+			bool				fSelected;
+			bool				fPressed;
+			bool				fPressedInBounds;
+			BList				fListeners;
+};
+
+
+// synchronous listener interface
+class AbstractButton::Listener {
+public:
+	virtual						~Listener();
+
+	virtual	void				SelectionChanged(AbstractButton* button) = 0;
+};
+
+
+#endif	// WIDGET_LAYOUT_TEST_ABSTRACT_BUTTON_H

src/tests/kits/interface/layout/widget_layout_test/BoxTest.cpp

@@ -10,11 +10,34 @@
 #include <Box.h>
 #include <Message.h>
 
+#include "GroupView.h"
+#include "RadioButton.h"
+
+
+// messages
+enum {
+	MSG_BORDER_STYLE_CHANGED	= 'bstc',
+};
+
+
+// BorderStyleRadioButton
+class BoxTest::BorderStyleRadioButton : public LabeledRadioButton {
+public:
+	BorderStyleRadioButton(const char* label, border_style style)
+		: LabeledRadioButton(label),
+		  fBorderStyle(style)
+	{
+	}
+
+	border_style	fBorderStyle;
+};
+
 
 // constructor
 BoxTest::BoxTest()
 	: Test("Box", NULL),
-	  fBox(new BBox(BRect(0, 0, 9, 9), "test box", B_FOLLOW_NONE))
+	  fBox(new BBox(BRect(0, 0, 9, 9), "test box", B_FOLLOW_NONE)),
+	  fBorderStyleRadioGroup(NULL)
 // TODO: Layout-friendly constructor
 {
 	SetView(fBox);
@@ -24,6 +47,7 @@ BoxTest::BoxTest()
 // destructor
 BoxTest::~BoxTest()
 {
+	delete fBorderStyleRadioGroup;
 }
 
 
@@ -31,26 +55,41 @@ BoxTest::~BoxTest()
 void
 BoxTest::ActivateTest(View* controls)
 {
-/*	GroupView* group = new GroupView(B_VERTICAL);
+	// BBox sets its background color to that of its parent in
+	// AttachedToWindow(). Override.
+	rgb_color background = ui_color(B_PANEL_BACKGROUND_COLOR);
+	fBox->SetViewColor(background);
+	fBox->SetLowColor(background);
+
+	GroupView* group = new GroupView(B_VERTICAL);
 	group->SetFrame(controls->Bounds());
 	group->SetSpacing(0, 8);
 	controls->AddChild(group);
 
-	// long button text
+	// the radio button group for selecting the border style
-	fLongTextCheckBox = new LabeledCheckBox("Long Button Text",
+	fBorderStyleRadioGroup = new RadioButtonGroup(
-		new BMessage(MSG_CHANGE_BUTTON_TEXT), this);
+		new BMessage(MSG_BORDER_STYLE_CHANGED), this);
-	group->AddChild(fLongTextCheckBox);
 
-	// big font
+	// no border
-	fBigFontCheckBox = new LabeledCheckBox("Big Button Font",
+	LabeledRadioButton* button = new BorderStyleRadioButton("no border",
-		new BMessage(MSG_CHANGE_BUTTON_FONT), this);
+		B_NO_BORDER);
-	group->AddChild(fBigFontCheckBox);
+	group->AddChild(button);
+	fBorderStyleRadioGroup->AddButton(button->GetRadioButton());
+
+	// plain border
+	button = new BorderStyleRadioButton("plain border", B_PLAIN_BORDER);
+	group->AddChild(button);
+	fBorderStyleRadioGroup->AddButton(button->GetRadioButton());
+
+	// fancy border
+	button = new BorderStyleRadioButton("fancy border", B_FANCY_BORDER);
+	group->AddChild(button);
+	fBorderStyleRadioGroup->AddButton(button->GetRadioButton());
+
+	// default to no border
+	fBorderStyleRadioGroup->SelectButton(0L);
 
 	group->AddChild(new Glue());
-
-	_SetButtonText(false);
-	_SetButtonFont(false);
-*/
 }
 
 
@@ -59,3 +98,37 @@ void
 BoxTest::DectivateTest()
 {
 }
+
+
+// MessageReceived
+void
+BoxTest::MessageReceived(BMessage* message)
+{
+	switch (message->what) {
+		case MSG_BORDER_STYLE_CHANGED:
+			_UpdateBorderStyle();
+			break;
+		default:
+			Test::MessageReceived(message);
+			break;
+	}
+}
+
+
+// _UpdateBorderStyle
+void
+BoxTest::_UpdateBorderStyle()
+{
+	if (fBorderStyleRadioGroup) {
+		// We need to get the parent of the actually selected button, since
+		// that is the labeled radio button we've derived our
+		// BorderStyleRadioButton from.
+		AbstractButton* selectedButton
+			= fBorderStyleRadioGroup->SelectedButton();
+		View* parent = (selectedButton ? selectedButton->Parent() : NULL);
+		BorderStyleRadioButton* button = dynamic_cast<BorderStyleRadioButton*>(
+			parent);
+		if (button)
+			fBox->SetBorder(button->fBorderStyle);
+	}
+}

src/tests/kits/interface/layout/widget_layout_test/BoxTest.h

@@ -10,7 +10,7 @@
 
 
 class BBox;
-class View;
+class RadioButtonGroup;
 
 
 class BoxTest : public Test {
@@ -21,8 +21,16 @@ public:
 	virtual	void				ActivateTest(View* controls);
 	virtual	void				DectivateTest();
 
+	virtual	void				MessageReceived(BMessage* message);
+
 private:
+			void				_UpdateBorderStyle();
+
+private:
+			class BorderStyleRadioButton;
+
 			BBox*				fBox;
+			RadioButtonGroup*	fBorderStyleRadioGroup;
 };
 
 

src/tests/kits/interface/layout/widget_layout_test/CheckBox.cpp

@@ -14,39 +14,12 @@
 
 
 CheckBox::CheckBox(BMessage* message, BMessenger target)
-	: View(BRect(0, 0, 12, 12)),
+	: AbstractButton(BUTTON_POLICY_TOGGLE_ON_RELEASE, message, target)
-	  BInvoker(message, target),
-	  fSelected(false),
-	  fPressed(false)
 {
 	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
 }
 
 
-void
-CheckBox::SetSelected(bool selected)
-{
-	if (selected != fSelected) {
-		fSelected = selected;
-		Invalidate();
-
-		// send the message
-		if (Message()) {
-			BMessage message(*Message());
-			message.AddBool("selected", IsSelected());
-			InvokeNotify(&message);
-		}
-	}
-}
-
-
-bool
-CheckBox::IsSelected() const
-{
-	return fSelected;
-}
-
-
 BSize
 CheckBox::MinSize()
 {
@@ -66,14 +39,14 @@ CheckBox::Draw(BView* container, BRect updateRect)
 {
 	BRect rect(Bounds());
 
-	if (fPressed)
+	if (IsPressed())
 		container->SetHighColor((rgb_color){ 120, 0, 0, 255 });
 	else
 		container->SetHighColor((rgb_color){ 0, 0, 0, 255 });
 
 	container->StrokeRect(rect);
 
-	if (fPressed ? fPressedSelected : fSelected) {
+	if (IsSelected()) {
 		rect.InsetBy(2, 2);
 		container->StrokeLine(rect.LeftTop(), rect.RightBottom());
 		container->StrokeLine(rect.RightTop(), rect.LeftBottom());
@@ -81,52 +54,6 @@ CheckBox::Draw(BView* container, BRect updateRect)
 }
 
 
-void
-CheckBox::MouseDown(BPoint where, uint32 buttons, int32 modifiers)
-{
-	if (fPressed)
-		return;
-
-	fPressed = true;
-	fPressedSelected = fSelected;
-	_PressedUpdate(where);
-}
-
-
-void
-CheckBox::MouseUp(BPoint where, uint32 buttons, int32 modifiers)
-{
-	if (!fPressed || (buttons & B_PRIMARY_MOUSE_BUTTON))
-		return;
-
-	_PressedUpdate(where);
-	fPressed = false;
-	SetSelected(fPressedSelected);
-	Invalidate();
-}
-
-
-void
-CheckBox::MouseMoved(BPoint where, uint32 buttons, int32 modifiers)
-{
-	if (!fPressed)
-		return;
-
-	_PressedUpdate(where);
-}
-
-
-void
-CheckBox::_PressedUpdate(BPoint where)
-{
-	bool pressedSelected = Bounds().Contains(where) ^ fSelected;
-	if (pressedSelected != fPressedSelected) {
-		fPressedSelected = pressedSelected;
-		Invalidate();
-	}
-}
-
-
 // #pragma mark - LabeledCheckBox
 
 

src/tests/kits/interface/layout/widget_layout_test/CheckBox.h

@@ -8,37 +8,20 @@
 
 #include <Invoker.h>
 
+#include "AbstractButton.h"
 #include "GroupView.h"
 
 
 // CheckBox
-class CheckBox : public View, public BInvoker {
+class CheckBox : public AbstractButton {
 public:
 								CheckBox(BMessage* message = NULL,
 									BMessenger target = BMessenger());
 
-			void				SetSelected(bool selected);
-			bool				IsSelected() const;
-
 	virtual	BSize				MinSize();
 	virtual	BSize				MaxSize();
 
 	virtual	void				Draw(BView* container, BRect updateRect);
-
-	virtual	void				MouseDown(BPoint where, uint32 buttons,
-									int32 modifiers);
-	virtual	void				MouseUp(BPoint where, uint32 buttons,
-									int32 modifiers);
-	virtual	void				MouseMoved(BPoint where, uint32 buttons,
-									int32 modifiers);
-
-private:
-			void				_PressedUpdate(BPoint where);
-
-private:
-			bool				fSelected;
-			bool				fPressed;
-			bool				fPressedSelected;
 };
 
 

src/tests/kits/interface/layout/widget_layout_test/Jamfile

@@ -5,10 +5,12 @@ SetSubDirSupportedPlatforms haiku libbe_test ;
 SimpleTest WidgetLayoutTest :
 	WidgetLayoutTest.cpp
 
+	AbstractButton.cpp
 	BoxTest.cpp
 	ButtonTest.cpp
 	CheckBox.cpp
 	GroupView.cpp
+	RadioButton.cpp
 	StringView.cpp
 	Test.cpp
 	TwoDimensionalSliderView.cpp

src/tests/kits/interface/layout/widget_layout_test/RadioButton.cpp

@@ -0,0 +1,246 @@
+/*
+ * Copyright 2007, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#include "RadioButton.h"
+
+#include <View.h>
+
+#include "StringView.h"
+
+
+// #pragma mark - RadioButton
+
+
+RadioButton::RadioButton(BMessage* message, BMessenger target)
+	: AbstractButton(BUTTON_POLICY_SELECT_ON_RELEASE, message, target)
+{
+	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
+}
+
+
+BSize
+RadioButton::MinSize()
+{
+	return BSize(12, 12);
+}
+
+
+BSize
+RadioButton::MaxSize()
+{
+	return MinSize();
+}
+
+
+void
+RadioButton::Draw(BView* container, BRect updateRect)
+{
+	BRect rect(Bounds());
+
+	if (IsPressed())
+		container->SetHighColor((rgb_color){ 120, 0, 0, 255 });
+	else
+		container->SetHighColor((rgb_color){ 0, 0, 0, 255 });
+
+	container->StrokeRect(rect);
+
+	if (IsSelected()) {
+		rect.InsetBy(4, 4);
+		container->FillRect(rect);
+	}
+}
+
+
+// #pragma mark - LabeledRadioButton
+
+
+LabeledRadioButton::LabeledRadioButton(const char* label, BMessage* message,
+	BMessenger target)
+	: GroupView(B_HORIZONTAL),
+	  fRadioButton(new RadioButton(message, target))
+{
+	SetSpacing(8, 0);
+
+	AddChild(fRadioButton);
+	if (label)
+		AddChild(new StringView(label));
+}
+
+
+void
+LabeledRadioButton::SetTarget(BMessenger messenger)
+{
+	fRadioButton->SetTarget(messenger);
+}
+
+
+void
+LabeledRadioButton::SetSelected(bool selected)
+{
+	fRadioButton->SetSelected(selected);
+}
+
+
+bool
+LabeledRadioButton::IsSelected() const
+{
+	return fRadioButton->IsSelected();
+}
+
+
+// #pragma mark - RadioButtonGroup
+
+
+RadioButtonGroup::RadioButtonGroup(BMessage* message, BMessenger target)
+	: BInvoker(message, target),
+	  fButtons(10),
+	  fSelected(NULL)
+{
+}
+
+
+RadioButtonGroup::~RadioButtonGroup()
+{
+	// remove as listener from buttons
+	for (int32 i = 0; AbstractButton* button = ButtonAt(i); i++)
+		button->RemoveListener(this);
+}
+
+
+void
+RadioButtonGroup::AddButton(AbstractButton* button)
+{
+	if (!button || fButtons.HasItem(button))
+		return;
+
+	// force radio button policy
+	button->SetPolicy(BUTTON_POLICY_SELECT_ON_RELEASE);
+
+	// deselect the button, if we do already have a selected one
+	if (fSelected)
+		button->SetSelected(false);
+
+	// add ourselves as listener
+	button->AddListener(this);
+
+	// add the button to our list
+	fButtons.AddItem(button);
+}
+
+
+bool
+RadioButtonGroup::RemoveButton(AbstractButton* button)
+{
+	return RemoveButton(IndexOfButton(button));
+}
+
+
+AbstractButton*
+RadioButtonGroup::RemoveButton(int32 index)
+{
+	// remove the button from our list
+	AbstractButton* button = (AbstractButton*)fButtons.RemoveItem(index);
+	if (!button)
+		return NULL;
+
+	// remove ourselves as listener
+	button->RemoveListener(this);
+
+	// if it was the selected one, we don't have a selection anymore
+	if (button == fSelected) {
+		fSelected = NULL;
+		_SelectionChanged();
+	}
+
+	return button;
+}
+
+
+int32
+RadioButtonGroup::CountButtons() const
+{
+	return fButtons.CountItems();
+}
+
+
+AbstractButton*
+RadioButtonGroup::ButtonAt(int32 index) const
+{
+	return (AbstractButton*)fButtons.ItemAt(index);
+}
+
+
+int32
+RadioButtonGroup::IndexOfButton(AbstractButton* button) const
+{
+	return fButtons.IndexOf(button);
+}
+
+
+void
+RadioButtonGroup::SelectButton(AbstractButton* button)
+{
+	if (button && fButtons.HasItem(button))
+		button->SetSelected(true);
+}
+
+
+void
+RadioButtonGroup::SelectButton(int32 index)
+{
+	if (AbstractButton* button = ButtonAt(index))
+		button->SetSelected(true);
+}
+
+
+AbstractButton*
+RadioButtonGroup::SelectedButton() const
+{
+	return fSelected;
+}
+
+
+int32
+RadioButtonGroup::SelectedIndex() const
+{
+	return (fSelected ? IndexOfButton(fSelected) : -1);
+}
+
+
+void
+RadioButtonGroup::SelectionChanged(AbstractButton* button)
+{
+	// We're only interested in a notification when one of our buttons that
+	// has not been selected one before has become selected.
+	if (!button || !fButtons.HasItem(button) || !button->IsSelected()
+		|| button == fSelected) {
+		return;
+	}
+
+	// set the new selection
+	AbstractButton* oldSelected = fSelected;
+	fSelected = button;
+
+	// deselect the old selected button
+	if (oldSelected)
+		oldSelected->SetSelected(false);
+
+	// send out notifications
+	_SelectionChanged();
+}
+
+
+void
+RadioButtonGroup::_SelectionChanged()
+{
+	// send the message
+	if (Message()) {
+		BMessage message(*Message());
+		message.AddPointer("button group", this);
+		message.AddPointer("selected button", fSelected);
+		message.AddInt32("selected index", SelectedIndex());
+		InvokeNotify(&message);
+	}
+}

src/tests/kits/interface/layout/widget_layout_test/RadioButton.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2007, Ingo Weinhold <[email protected]>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+#ifndef WIDGET_LAYOUT_TEST_CHECK_BOX_H
+#define WIDGET_LAYOUT_TEST_CHECK_BOX_H
+
+
+#include <Invoker.h>
+#include <List.h>
+
+#include "AbstractButton.h"
+#include "GroupView.h"
+
+
+// RadioButton
+class RadioButton : public AbstractButton {
+public:
+								RadioButton(BMessage* message = NULL,
+									BMessenger target = BMessenger());
+
+	virtual	BSize				MinSize();
+	virtual	BSize				MaxSize();
+
+	virtual	void				Draw(BView* container, BRect updateRect);
+};
+
+
+// LabeledRadioButton
+class LabeledRadioButton : public GroupView {
+public:
+								LabeledRadioButton(const char* label,
+									BMessage* message = NULL,
+									BMessenger target = BMessenger());
+
+			RadioButton*		GetRadioButton() const	{ return fRadioButton; }
+
+			void				SetTarget(BMessenger messenger);
+
+			void				SetSelected(bool selected);
+			bool				IsSelected() const;
+
+private:
+			RadioButton*		fRadioButton;
+};
+
+
+// RadioButtonGroup
+class RadioButtonGroup : public BInvoker, private AbstractButton::Listener {
+public:
+								RadioButtonGroup(BMessage* message = NULL,
+									BMessenger target = BMessenger());
+	virtual						~RadioButtonGroup();
+
+			void				AddButton(AbstractButton* button);
+			bool				RemoveButton(AbstractButton* button);
+			AbstractButton*		RemoveButton(int32 index);
+
+			int32				CountButtons() const;
+			AbstractButton*		ButtonAt(int32 index) const;
+			int32				IndexOfButton(AbstractButton* button) const;
+
+			void				SelectButton(AbstractButton* button);
+			void				SelectButton(int32 index);
+			AbstractButton*		SelectedButton() const;
+			int32				SelectedIndex() const;
+
+private:
+	virtual	void				SelectionChanged(AbstractButton* button);
+
+			void				_SelectionChanged();
+
+private:
+			BList				fButtons;
+			AbstractButton*		fSelected;
+};
+
+
+#endif	// WIDGET_LAYOUT_TEST_CHECK_BOX_H