// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
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//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
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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"
#include "utils.h"

AssExportFilter::AssExportFilter(wxString const& name, wxString const& description, int priority, bool auto_apply)
: name(name)
, priority(priority)
, description(description)
, auto_apply(auto_apply)
{
}

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

	int filter_copy = 1;
	wxString name = filter->name;
	// Find a unique name
	while (GetFilter(name))
		name = wxString::Format("%s (%d)", filter->name, filter_copy++);

	filter->name = name;

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

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

	filters()->remove(filter);
}

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

const FilterList *AssExportFilterChain::GetFilterList() {
	return filters();
}

void AssExportFilterChain::Clear() {
	delete_clear(*filters());
}

AssExportFilter *AssExportFilterChain::GetFilter(wxString const& name) {
	for (FilterList::iterator it = filters()->begin(); it != filters()->end(); ++it) {
		if ((*it)->name == name)
			return *it;
	}
	return 0;
}