/**
 * \file GuiMath.cpp
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Angus Leeming
 *
 * Full author contact details are available in file CREDITS.
 */

#include <config.h>

#include "GuiMath.h"
#include "debug.h"
#include "FuncRequest.h"

using std::string;
using std::map;

namespace lyx {
namespace frontend {

GuiMath::GuiMath(LyXView & lv, std::string const & name)
	: GuiDialog(lv, name)
{
	// FIXME: Ideally, those unicode codepoints would be defined
	// in "lib/symbols". Unfortunately, some of those are already
	// defined with non-unicode ids for use within mathed.
	// FIXME 2: We should fill-in this map with the parsed "symbols"
	// file done in MathFactory.cpp.
	math_symbols_["("] = MathSymbol('(');
	math_symbols_[")"] = MathSymbol(')');
	math_symbols_["{"] = MathSymbol('{');
	math_symbols_["}"] = MathSymbol('}');
	math_symbols_["["] = MathSymbol('[');
	math_symbols_["]"] = MathSymbol(']');
	math_symbols_["|"] = MathSymbol('|');
	math_symbols_["/"] = MathSymbol('/', 54, Font::CMSY_FAMILY);
	math_symbols_["backslash"] = MathSymbol('\\', 110, Font::CMSY_FAMILY);
	math_symbols_["lceil"] = MathSymbol(0x2308, 100, Font::CMSY_FAMILY);
	math_symbols_["rceil"] = MathSymbol(0x2309, 101, Font::CMSY_FAMILY);
	math_symbols_["lfloor"] = MathSymbol(0x230A, 98, Font::CMSY_FAMILY);
	math_symbols_["rfloor"] = MathSymbol(0x230B, 99, Font::CMSY_FAMILY);
	math_symbols_["langle"] = MathSymbol(0x2329, 104, Font::CMSY_FAMILY);
	math_symbols_["rangle"] = MathSymbol(0x232A, 105, Font::CMSY_FAMILY);
	math_symbols_["uparrow"] = MathSymbol(0x2191, 34, Font::CMSY_FAMILY);
	math_symbols_["Uparrow"] = MathSymbol(0x21D1, 42, Font::CMSY_FAMILY);
	math_symbols_["updownarrow"] = MathSymbol(0x2195, 108, Font::CMSY_FAMILY);
	math_symbols_["Updownarrow"] = MathSymbol(0x21D5, 109, Font::CMSY_FAMILY);
	math_symbols_["downarrow"] = MathSymbol(0x2193, 35, Font::CMSY_FAMILY);
	math_symbols_["Downarrow"] = MathSymbol(0x21D3, 43, Font::CMSY_FAMILY);
	math_symbols_["downdownarrows"] = MathSymbol(0x21CA, 184, Font::MSA_FAMILY);
	math_symbols_["downharpoonleft"] = MathSymbol(0x21C3, 188, Font::MSA_FAMILY);
	math_symbols_["downharpoonright"] = MathSymbol(0x21C2, 186, Font::MSA_FAMILY);
	math_symbols_["vert"] = MathSymbol(0x007C, 106, Font::CMSY_FAMILY);
	math_symbols_["Vert"] = MathSymbol(0x2016, 107, Font::CMSY_FAMILY);

	std::map<string, MathSymbol>::const_iterator it = math_symbols_.begin();
	std::map<string, MathSymbol>::const_iterator end = math_symbols_.end();
	for (; it != end; ++it)
		tex_names_[it->second.unicode] = it->first;
}


void GuiMath::dispatchFunc(kb_action action, string const & arg) const
{
	dispatch(FuncRequest(action, arg));
}


void GuiMath::dispatchInsert(string const & name) const
{
	dispatchFunc(LFUN_MATH_INSERT, '\\' + name);
}


void GuiMath::dispatchSubscript() const
{
	dispatchFunc(LFUN_MATH_INSERT, "_");
}


void GuiMath::dispatchSuperscript() const
{
	dispatchFunc(LFUN_MATH_INSERT, "^");
}


void GuiMath::dispatchCubeRoot() const
{
	dispatchFunc(LFUN_MATH_INSERT, "\\root");
	dispatchFunc(LFUN_SELF_INSERT, "3");
	dispatchFunc(LFUN_CHAR_FORWARD);
}


void GuiMath::dispatchMatrix(string const & str) const
{
	dispatchFunc(LFUN_MATH_MATRIX, str);
}


void GuiMath::dispatchDelim(string const & str) const
{
	dispatchFunc(LFUN_MATH_DELIM, str);
}


void GuiMath::dispatchBigDelim(string const & str) const
{
	dispatchFunc(LFUN_MATH_BIGDELIM, str);
}


void GuiMath::dispatchToggleDisplay() const
{
	dispatchFunc(LFUN_MATH_DISPLAY);
}


void GuiMath::showDialog(string const & name) const
{
	dispatchFunc(LFUN_DIALOG_SHOW, name);
}


MathSymbol const & GuiMath::mathSymbol(string tex_name) const
{
	map<string, MathSymbol>::const_iterator it =
		math_symbols_.find(tex_name);

	static MathSymbol unknown_symbol;
	if (it == math_symbols_.end())
		return unknown_symbol;

	return it->second;
}


std::string const & GuiMath::texName(char_type math_symbol) const
{
	map<char_type, string>::const_iterator it =
		tex_names_.find(math_symbol);

	static string empty_string;
	if (it == tex_names_.end())
		return empty_string;

	return it->second;
}


} // namespace frontend
} // namespace lyx