Override a bunch of methods in layout related classes for FBC stability.

* Especially made sure to override archiving methods, since these are called rarely, so the cost is very minimal
* Otherwise, the closer a class is to a base class, the more likely I was to give it all the overrides.

headers/os/interface/AbstractLayout.h

@@ -37,12 +37,25 @@ public:
 	virtual	void				SetVisible(bool visible);
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual	status_t 			AllArchived(BMessage* archive) const;
 	virtual	status_t			AllUnarchived(const BMessage* from);
 
+	virtual status_t			ItemArchived(BMessage* into, BLayoutItem* item,
+									int32 index) const;
+	virtual	status_t			ItemUnarchived(const BMessage* from,
+									BLayoutItem* item, int32 index);
+
 	virtual	status_t			Perform(perform_code d, void* arg);
 
 protected:
+	virtual	bool				ItemAdded(BLayoutItem* item, int32 atIndex);
+	virtual	void				ItemRemoved(BLayoutItem* item, int32 fromIndex);
+	virtual	void				LayoutInvalidated(bool children);
 	virtual	void				OwnerChanged(BView* was);
+
+	// BLayoutItem hook methods
+	virtual	void				AttachedToLayout();
+	virtual void				DetachedFromLayout(BLayout* layout);
 	virtual	void				AncestorVisibilityChanged(bool shown);
 
 private:

headers/os/interface/AbstractLayoutItem.h

@@ -32,9 +32,19 @@ public:
 	virtual	BAlignment			BaseAlignment();
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual	status_t 			AllUnarchived(const BMessage* archive);
+	virtual	status_t 			AllArchived(BMessage* archive) const;
 
 	virtual	status_t			Perform(perform_code d, void* arg);
 
+protected:
+	virtual	void				LayoutInvalidated(bool children);
+
+	virtual	void				AttachedToLayout();
+	virtual	void				DetachedFromLayout(BLayout* layout);
+
+	virtual void				AncestorVisibilityChanged(bool shown);
+
 private:
 	virtual	void				_ReservedAbstractLayoutItem1();
 	virtual	void				_ReservedAbstractLayoutItem2();

headers/os/interface/CardLayout.h

@@ -29,6 +29,7 @@ public:
 									float* max, float* preferred);
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual	status_t			AllArchived(BMessage* archive) const;
 	virtual status_t			AllUnarchived(const BMessage* from);
 	static	BArchivable*		Instantiate(BMessage* from);
 

headers/os/interface/GridLayout.h

@@ -59,6 +59,8 @@ public:
 									int32 rowCount = 1);
 
 	virtual	status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual status_t			AllArchived(BMessage* into) const;
+	virtual	status_t			AllUnarchived(const BMessage* from);
 	static	BArchivable*		Instantiate(BMessage* from);
 
 	virtual status_t			ItemArchived(BMessage* into,

headers/os/interface/GroupLayout.h

@@ -36,6 +36,7 @@ public:
 									float weight);
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual status_t			AllArchived(BMessage* into) const;
 	virtual	status_t			AllUnarchived(const BMessage* from);
 	static	BArchivable*		Instantiate(BMessage* from);
 

headers/os/interface/Layout.h

@@ -63,6 +63,7 @@ public:
 	// Archiving methods
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual	status_t			AllArchived(BMessage* archive) const;
 	virtual	status_t			AllUnarchived(const BMessage* from);
 
 	virtual status_t			ItemArchived(BMessage* into, BLayoutItem* item,

headers/os/interface/SpaceLayoutItem.h

@@ -45,6 +45,8 @@ private:
 			BSize				fPreferredSize;
 			BAlignment			fAlignment;
 			bool				fVisible;
+
+			uint32				_reserved[2];
 };
 
 #endif	//	_SPACE_LAYOUT_ITEM_H

headers/os/interface/SplitView.h

@@ -58,16 +58,20 @@ public:
 									float weight);
 
 	virtual	void				Draw(BRect updateRect);
+	virtual	void				DrawAfterChildren(BRect updateRect);
 	virtual	void				MouseDown(BPoint where);
 	virtual	void				MouseUp(BPoint where);
 	virtual	void				MouseMoved(BPoint where, uint32 transit,
 									const BMessage* message);
 
+	virtual	void				MessageReceived(BMessage* message);
+
 
 	virtual	void				SetLayout(BLayout* layout);
 									// overridden to avoid use
 
 	virtual status_t			Archive(BMessage* into, bool deep = true) const;
+	virtual	status_t			AllArchived(BMessage* into) const;
 	virtual status_t			AllUnarchived(const BMessage* from);
 	static	BArchivable*		Instantiate(BMessage* from);
 

headers/os/interface/TwoDimensionalLayout.h

@@ -42,6 +42,11 @@ public:
 	virtual status_t			AllArchived(BMessage* into) const;
 	virtual	status_t			AllUnarchived(const BMessage* from);
 
+	virtual status_t			ItemArchived(BMessage* into, BLayoutItem* item,
+									int32 index) const;
+	virtual	status_t			ItemUnarchived(const BMessage* from,
+									BLayoutItem* item, int32 index);
+
 	virtual status_t			Perform(perform_code d, void* arg);
 
 protected:

src/kits/interface/AbstractLayout.cpp

@@ -419,6 +419,13 @@ BAbstractLayout::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BAbstractLayout::AllArchived(BMessage* archive) const
+{
+	return BLayout::AllArchived(archive);
+}
+
+
 status_t
 BAbstractLayout::AllUnarchived(const BMessage* from)
 {
@@ -430,6 +437,43 @@ BAbstractLayout::AllUnarchived(const BMessage* from)
 }
 
 
+status_t
+BAbstractLayout::ItemArchived(BMessage* into, BLayoutItem* item,
+	int32 index) const
+{
+	return BLayout::ItemArchived(into, item, index);
+}
+
+
+status_t
+BAbstractLayout::ItemUnarchived(const BMessage* from, BLayoutItem* item,
+	int32 index)
+{
+	return BLayout::ItemUnarchived(from, item, index);
+}
+
+
+bool
+BAbstractLayout::ItemAdded(BLayoutItem* item, int32 atIndex)
+{
+	return BLayout::ItemAdded(item, atIndex);
+}
+
+
+void
+BAbstractLayout::ItemRemoved(BLayoutItem* item, int32 fromIndex)
+{
+	BLayout::ItemRemoved(item, fromIndex);
+}
+
+
+void
+BAbstractLayout::LayoutInvalidated(bool children)
+{
+	BLayout::LayoutInvalidated(children);
+}
+
+
 void
 BAbstractLayout::OwnerChanged(BView* was)
 {
@@ -443,6 +487,20 @@ BAbstractLayout::OwnerChanged(BView* was)
 }
 
 
+void
+BAbstractLayout::AttachedToLayout()
+{
+	BLayout::AttachedToLayout();
+}
+
+
+void
+BAbstractLayout::DetachedFromLayout(BLayout* layout)
+{
+	BLayout::DetachedFromLayout(layout);
+}
+
+
 void
 BAbstractLayout::AncestorVisibilityChanged(bool shown)
 {

src/kits/interface/AbstractLayoutItem.cpp

@@ -154,6 +154,48 @@ BAbstractLayoutItem::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BAbstractLayoutItem::AllUnarchived(const BMessage* archive)
+{
+	return BLayoutItem::AllUnarchived(archive);
+}
+
+
+status_t
+BAbstractLayoutItem::AllArchived(BMessage* archive) const
+{
+	return BLayoutItem::AllArchived(archive);
+}
+
+
+void
+BAbstractLayoutItem::LayoutInvalidated(bool children)
+{
+	BLayoutItem::LayoutInvalidated(children);
+}
+
+
+void
+BAbstractLayoutItem::AttachedToLayout()
+{
+	BLayoutItem::AttachedToLayout();
+}
+
+
+void
+BAbstractLayoutItem::DetachedFromLayout(BLayout* layout)
+{
+	BLayoutItem::DetachedFromLayout(layout);
+}
+
+
+void
+BAbstractLayoutItem::AncestorVisibilityChanged(bool shown)
+{
+	BLayoutItem::AncestorVisibilityChanged(shown);
+}
+
+
 status_t
 BAbstractLayoutItem::Perform(perform_code d, void* arg)
 {

src/kits/interface/CardLayout.cpp

@@ -212,6 +212,13 @@ BCardLayout::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BCardLayout::AllArchived(BMessage* archive) const
+{
+	return BAbstractLayout::AllArchived(archive);
+}
+
+
 status_t
 BCardLayout::AllUnarchived(const BMessage* from)
 {

src/kits/interface/GridLayout.cpp

@@ -496,6 +496,20 @@ BGridLayout::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BGridLayout::AllArchived(BMessage* into) const
+{
+	return BTwoDimensionalLayout::AllArchived(into);
+}
+
+
+status_t
+BGridLayout::AllUnarchived(const BMessage* from)
+{
+	return BTwoDimensionalLayout::AllUnarchived(from);
+}
+
+
 BArchivable*
 BGridLayout::Instantiate(BMessage* from)
 {

src/kits/interface/GroupLayout.cpp

@@ -198,6 +198,13 @@ BGroupLayout::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BGroupLayout::AllArchived(BMessage* into) const
+{
+	return BTwoDimensionalLayout::AllArchived(into);
+}
+
+
 status_t
 BGroupLayout::AllUnarchived(const BMessage* from)
 {

src/kits/interface/Layout.cpp

@@ -452,6 +452,13 @@ BLayout::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BLayout::AllArchived(BMessage* archive) const
+{
+	return BArchivable::AllArchived(archive);
+}
+
+
 status_t
 BLayout::AllUnarchived(const BMessage* from)
 {

src/kits/interface/SplitView.cpp

@@ -222,6 +222,13 @@ BSplitView::Draw(BRect updateRect)
 }
 
 
+void
+BSplitView::DrawAfterChildren(BRect r)
+{
+	return BView::DrawAfterChildren(r);
+}
+
+
 void
 BSplitView::MouseDown(BPoint where)
 {
@@ -269,6 +276,13 @@ BSplitView::MouseMoved(BPoint where, uint32 transit, const BMessage* message)
 }
 
 
+void
+BSplitView::MessageReceived(BMessage* message)
+{
+	return BView::MessageReceived(message);
+}
+
+
 void
 BSplitView::SetLayout(BLayout* layout)
 {
@@ -283,6 +297,13 @@ BSplitView::Archive(BMessage* into, bool deep) const
 }
 
 
+status_t
+BSplitView::AllArchived(BMessage* archive) const
+{
+	return BView::AllArchived(archive);
+}
+
+
 status_t
 BSplitView::AllUnarchived(const BMessage* from)
 {

src/kits/interface/TwoDimensionalLayout.cpp

@@ -456,6 +456,24 @@ BTwoDimensionalLayout::AllUnarchived(const BMessage* from)
 }
 
 
+status_t
+BTwoDimensionalLayout::ItemArchived(BMessage* into, BLayoutItem* item,
+	int32 index) const
+{
+	return BAbstractLayout::ItemArchived(into, item, index);
+}
+
+
+status_t
+BTwoDimensionalLayout::ItemUnarchived(const BMessage* from, BLayoutItem* item,
+	int32 index)
+{
+	return BAbstractLayout::ItemUnarchived(from, item, index);
+}
+
+
+
+
 void
 BTwoDimensionalLayout::LayoutInvalidated(bool children)
 {