1 files changed, 100 insertions, 0 deletions
diff --git a/Src/replicant/nswasabi/MetadataEditorChain.h b/Src/replicant/nswasabi/MetadataEditorChain.h
new file mode 100644
index 00000000..7142acca
--- /dev/null
+++ b/Src/replicant/nswasabi/MetadataEditorChain.h
@@ -0,0 +1,100 @@
+#pragma once
+#include "metadata/ifc_metadata_editor.h"
+
+
+template <class metadata_t>
+class MetadataEditorChain : public metadata_t
+{
+public:
+	MetadataEditorChain()
+	{
+		parent_metadata=0;
+	}
+
+	~MetadataEditorChain()
+	{
+		if (parent_metadata)
+			parent_metadata->Release();
+	}
+	
+	static bool Unhandled(ns_error_t ret)
+	{
+		return (ret == NErr_NotImplemented || ret == NErr_Empty || ret == NErr_Unknown);
+	}
+
+	ns_error_t SetParentMetadata(ifc_metadata_editor *new_parent_metadata)
+	{
+		if (parent_metadata)
+			parent_metadata->Release();
+		parent_metadata=new_parent_metadata;
+		if (parent_metadata)
+			parent_metadata->Retain();
+		return NErr_Success;
+	}
+protected:
+	ifc_metadata_editor *parent_metadata;
+private:
+	int WASABICALL MetadataEditor_Save()
+	{
+		if (parent_metadata)
+			return parent_metadata->Save();
+		else
+			return NErr_NotImplemented;
+	}
+
+	int WASABICALL MetadataEditor_SetField(int field, unsigned int index, nx_string_t value)
+	{
+		bool known=false;
+		if (parent_metadata && parent_metadata->SetField(field, index, value) == NErr_Success)
+			known=true;
+		if (metadata_t::MetadataEditor_SetField(field, index, value) == NErr_Success)
+			known=true;
+
+		if (known)
+			return NErr_Success;
+		else
+			return NErr_Unknown;
+	}
+
+	int WASABICALL MetadataEditor_SetInteger(int field, unsigned int index, int64_t value)
+	{
+		bool known=false;
+		if (parent_metadata && parent_metadata->SetInteger(field, index, value) == NErr_Success)
+			known=true;
+		if (metadata_t::MetadataEditor_SetInteger(field, index, value) == NErr_Success)
+			known=true;
+
+		if (known)
+			return NErr_Success;
+		else
+			return NErr_Unknown;
+	}
+
+	int WASABICALL MetadataEditor_SetReal(int field, unsigned int index, double value)
+	{
+		bool known=false;
+		if (parent_metadata && parent_metadata->SetReal(field, index, value) == NErr_Success)
+			known=true;
+		if (metadata_t::MetadataEditor_SetReal(field, index, value) == NErr_Success)
+			known=true;
+
+		if (known)
+			return NErr_Success;
+		else
+			return NErr_Unknown;
+	}
+	
+	int WASABICALL MetadataEditor_SetArtwork(int field, unsigned int index, artwork_t *data, data_flags_t flags)
+	{
+		bool known=false;
+		if (parent_metadata && parent_metadata->SetArtwork(field, index, data, flags) == NErr_Success)
+			known=true;
+		if (metadata_t::MetadataEditor_SetArtwork(field, index, data, flags) == NErr_Success)
+			known=true;
+
+		if (known)
+			return NErr_Success;
+		else
+			return NErr_Unknown;
+	}
+};
+\ No newline at end of file