Initial community commit

Src/Wasabi/bfc/depview.h

@@ -0,0 +1,103 @@
+#ifndef _DEPVIEW_H
+#define _DEPVIEW_H
+
+#include <bfc/depend.h>
+#include <map>
+
+// this handles classes that use the getDependencyPtr() method instead of a
+// public cast
+
+template <class VT>
+class NOVTABLE DependentViewerTPtr : private DependentViewerI
+{
+protected:
+	DependentViewerTPtr(VT *first = NULL)
+	{
+		_addViewItem(first);
+	}
+
+	void viewer_addViewItem(VT *item) { _addViewItem(item); }
+	void viewer_delViewItem(VT *item) { _delViewItem(item); }
+	using DependentViewerI::viewer_delAllItems;
+
+	VT *viewer_enumViewItem(int which)
+	{
+		return lookup(DependentViewerI::viewer_enumViewItem(which));
+	}
+	using DependentViewerI::viewer_getNumItems;
+	int viewer_haveItem(VT *item)
+	{
+		return DependentViewerI::viewer_haveItem(item->getDependencyPtr());
+	}
+
+	// item you were looking at is gone: WARNING: pointer no longer valid!
+	virtual int viewer_onItemDeleted(VT *item) { return 1; }
+	// item you are looking at issuing an event
+	virtual int viewer_onEvent(VT *item, int event, intptr_t param2, void *ptr, size_t ptrlen) { return 1; }
+
+protected:
+	virtual int viewer_onItemDeleted(ifc_dependent *item)
+	{
+		return viewer_onItemDeleted(lookup(item));
+	}
+	virtual int viewer_onEvent(ifc_dependent *item, const GUID *classguid, int event, intptr_t param, void *ptr, size_t ptrlen)
+	{
+		if (*classguid != *VT::depend_getClassGuid()) return 0;	// filter namespace
+		return viewer_onEvent(lookup(item), event, param, ptr, ptrlen);
+	}
+
+private:
+	VT *lookup(ifc_dependent *d)
+	{
+		if (d == NULL) 
+			return NULL;
+		
+		VT *vt = NULL;
+		//int r = ptrmap.getItem(d, &vt);
+		auto it = ptrmap.find(d);
+		if (it != ptrmap.end())
+		{
+			vt = it->second;
+		}
+
+		//ASSERT(r);
+		ASSERT(vt->getDependencyPtr() == d);
+		return vt;
+	}
+	void _addViewItem(VT *item)
+	{
+		if (item == NULL) 
+			return ;
+		ifc_dependent *d = item->getDependencyPtr();
+		if (d == NULL) 
+			return ;
+		
+		ptrmap.insert({ d, item });
+		
+		DependentViewerI::viewer_addViewItem(d);
+	}
+	void _delViewItem(VT *item)
+	{
+		if (item == NULL) return ;
+		ifc_dependent *dep = NULL;
+		
+		//ptrmap.reverseGetItem(item, &dep);
+		//int r = ptrmap.reverseDelItem(item);
+		for (auto &ptr : ptrmap)
+		{
+			if (ptr.second == item)
+			{
+				dep = ptr.first;
+				ptrmap.erase(dep);
+				break;
+			}
+		}
+
+		//ASSERT(r);
+		DependentViewerI::viewer_delViewItem(dep);
+	}
+
+	std::map<ifc_dependent *, VT *> ptrmap;
+};
+
+#endif