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

#include <config.h>

#include "InsetMathSplit.h"

#include "MathData.h"
#include "MathStream.h"
#include "MathStream.h"

#include "FuncRequest.h"
#include "FuncStatus.h"
#include "gettext.h"
#include "LaTeXFeatures.h"

#include "support/lstrings.h"

#include <ostream>


namespace lyx {

using support::bformat;

using std::string;


InsetMathSplit::InsetMathSplit(docstring const & name, char valign)
	: InsetMathGrid(1, 1, valign, docstring()), name_(name)
{
}


Inset * InsetMathSplit::clone() const
{
	return new InsetMathSplit(*this);
}


char InsetMathSplit::defaultColAlign(col_type col)
{
	if (name_ == "split")
		return 'l';
	if (name_ == "gathered")
		return 'c';
	if (name_ == "aligned")
		return (col & 1) ? 'l' : 'r';
	if (name_ == "alignedat")
		return (col & 1) ? 'l' : 'r';
	return 'l';
}


void InsetMathSplit::draw(PainterInfo & pi, int x, int y) const
{
	InsetMathGrid::draw(pi, x, y);
	setPosCache(pi, x, y);
}


bool InsetMathSplit::getStatus(Cursor & cur, FuncRequest const & cmd,
		FuncStatus & flag) const
{
	switch (cmd.action) {
	case LFUN_TABULAR_FEATURE: {
		docstring const & s = cmd.argument();
		if (s == "add-vline-left" || s == "add-vline-right") {
			flag.message(bformat(
				from_utf8(N_("Can't add vertical grid lines in '%1$s'")),	name_));
			flag.enabled(false);
			return true;
		}
		return InsetMathGrid::getStatus(cur, cmd, flag);
	}
	default:
		return InsetMathGrid::getStatus(cur, cmd, flag);
	}
}


void InsetMathSplit::write(WriteStream & ws) const
{
	if (ws.fragile())
		ws << "\\protect";
	ws << "\\begin{" << name_ << '}';
	if (name_ != "split" && valign() != 'c')
		ws << '[' << valign() << ']';
	if (name_ == "alignedat")
		ws << '{' << static_cast<unsigned int>((ncols() + 1)/2) << '}';
	InsetMathGrid::write(ws);
	if (ws.fragile())
		ws << "\\protect";
	ws << "\\end{" << name_ << "}\n";
}


void InsetMathSplit::infoize(odocstream & os) const
{
	docstring name = name_;
	name[0] = support::uppercase(name[0]);
	os << name << ' ';
}


void InsetMathSplit::validate(LaTeXFeatures & features) const
{
	if (name_ == "split" || name_ == "gathered" || name_ == "aligned" ||
	    name_ == "alignedat")
		features.require("amsmath");
	InsetMathGrid::validate(features);
}


} // namespace lyx