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#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;
}
};
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