// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are met:
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//     this list of conditions and the following disclaimer.
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//     this list of conditions and the following disclaimer in the documentation
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file ass_export_filter.cpp
/// @brief Baseclass for and management of single export filters
/// @ingroup export
///

#include "config.h"

#ifndef AGI_PRE
#include <algorithm>
#endif

#include "ass_export_filter.h"
#include "ass_file.h"

AssExportFilter::AssExportFilter(wxString const& name, wxString const& description, int priority)
: name(name)
, priority(priority)
, autoExporter(false)
, hidden(false)
, description(description)
{
}

void AssExportFilterChain::Register(AssExportFilter *filter) {
	// Remove pipes from name
	filter->name.Replace("|", "");

	FilterList::iterator begin = GetFilterList()->begin();
	FilterList::iterator end = GetFilterList()->end();

	int filter_copy = 0;
	wxString tmpnam = filter->name;
	if (false) {
try_new_name:
		tmpnam = wxString::Format("%s (%d)", filter->name, filter_copy);
	}

	// Check if name exists
	for (FilterList::iterator cur=begin;cur!=end;cur++) {
		if ((*cur)->name == tmpnam) {
			// Instead of just failing and making a big noise about it, let multiple filters share name, but append something to the later arrivals -jfs
			filter_copy++;
			goto try_new_name;
		}
	}

	filter->name = tmpnam;

	// Look for place to insert
	while (begin != end && (*begin)->priority >= filter->priority) ++begin;
	GetFilterList()->insert(begin, filter);
}

void AssExportFilterChain::Unregister(AssExportFilter *filter) {
	if (find(GetFilterList()->begin(), GetFilterList()->end(), filter) == GetFilterList()->end())
		throw wxString::Format("Unregister export filter: name \"%s\" is not registered.", filter->name);

	GetFilterList()->remove(filter);
}

FilterList *AssExportFilterChain::GetFilterList() {
	static FilterList instance;
	return &instance;
}