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

#include <config.h>

#include "InsetCommand.h"

#include "Buffer.h"
#include "BufferView.h"
#include "DispatchResult.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "Lexer.h"
#include "MetricsInfo.h"

#include "insets/InsetBox.h"
#include "insets/InsetBranch.h"
#include "insets/InsetCommand.h"
#include "insets/InsetERT.h"
#include "insets/InsetExternal.h"
#include "insets/InsetFloat.h"
#include "insets/InsetGraphics.h"
#include "insets/InsetInclude.h"
#include "insets/InsetListings.h"
#include "insets/InsetNote.h"
#include "insets/InsetPhantom.h"
#include "insets/InsetSpace.h"
#include "insets/InsetTabular.h"
#include "insets/InsetVSpace.h"
#include "insets/InsetWrap.h"

#include "support/debug.h"
#include "support/gettext.h"

#include "frontends/Application.h"

#include <sstream>

using namespace std;


namespace lyx {

// FIXME Would it now be possible to use the InsetCode in 
// place of the mailer name and recover that information?
InsetCommand::InsetCommand(Buffer * buf, InsetCommandParams const & p,
			   string const & mailer_name)
	: Inset(buf), p_(p),
	  mailer_name_(mailer_name),
	  mouse_hover_(false)
{}


InsetCommand::~InsetCommand()
{
	if (!mailer_name_.empty())
		hideDialogs(mailer_name_, this);
}


void InsetCommand::metrics(MetricsInfo & mi, Dimension & dim) const
{
	button_.update(screenLabel(), editable() || hasSettings());
	button_.metrics(mi, dim);
}


bool InsetCommand::setMouseHover(bool mouse_hover)
{
	mouse_hover_ = mouse_hover;
	return true;
}


void InsetCommand::draw(PainterInfo & pi, int x, int y) const
{
	button_.setRenderState(mouse_hover_);
	button_.draw(pi, x, y);
}


void InsetCommand::setParam(std::string const & name, docstring const & value)
{
	p_[name] = value;
}


docstring const & InsetCommand::getParam(std::string const & name) const
{
	return p_[name];
}


void InsetCommand::setParams(InsetCommandParams const & p)
{
	p_ = p;
	initView();
}


int InsetCommand::latex(odocstream & os, OutputParams const & runparams_in) const
{
	OutputParams runparams = runparams_in;
	os << getCommand(runparams);
	return 0;
}


int InsetCommand::plaintext(odocstream & os, OutputParams const &) const
{
	docstring const str = "[" + buffer().B_("LaTeX Command: ")
		+ from_utf8(getCmdName()) + "]";
	os << str;
	return str.size();
}


int InsetCommand::docbook(odocstream &, OutputParams const &) const
{
	return 0;
}


void InsetCommand::doDispatch(Cursor & cur, FuncRequest & cmd)
{
	switch (cmd.action_) {
	case LFUN_INSET_MODIFY: {
		if (cmd.getArg(0) == "changetype") {
			p_.setCmdName(cmd.getArg(1));
			initView();
			break;
		}
		InsetCommandParams p(p_.code());
		InsetCommand::string2params(mailer_name_, to_utf8(cmd.argument()), p);
		if (p.getCmdName().empty())
			cur.noUpdate();
		else
			setParams(p);
		break;
	}

	case LFUN_INSET_DIALOG_UPDATE: {
		string const name = to_utf8(cmd.argument());
		cur.bv().updateDialog(name, params2string(name, params()));
		break;
	}

	default:
		Inset::doDispatch(cur, cmd);
		break;
	}

}


bool InsetCommand::getStatus(Cursor & cur, FuncRequest const & cmd,
	FuncStatus & status) const
{
	switch (cmd.action_) {
	// suppress these
	case LFUN_ERT_INSERT:
		status.setEnabled(false);
		return true;
	
	// we handle these
	case LFUN_INSET_MODIFY:
		if (cmd.getArg(0) == "changetype") {
			string const newtype = cmd.getArg(1);
			status.setEnabled(p_.isCompatibleCommand(p_.code(), newtype));
			status.setOnOff(newtype == p_.getCmdName());
		} 
		status.setEnabled(true);
		return true;
	
	case LFUN_INSET_DIALOG_UPDATE:
		status.setEnabled(true);
		return true;
	
	default:
		return Inset::getStatus(cur, cmd, status);
	}
}


docstring InsetCommand::contextMenu(BufferView const &, int, int) const
{
	return from_ascii("context-") + from_ascii(mailer_name_);
}


bool InsetCommand::showInsetDialog(BufferView * bv) const
{
	if (!mailer_name_.empty())
		bv->showDialog(mailer_name_, params2string(mailer_name_, p_),
			const_cast<InsetCommand *>(this));
	return true;
}


// FIXME This could take an InsetCode instead of a string
bool InsetCommand::string2params(string const & name, string const & in,
	InsetCommandParams & params)
{
	params.clear();
	if (in.empty())
		return false;
	istringstream data(in);
	Lexer lex;
	lex.setStream(data);
	lex.setContext("InsetCommand::string2params");
	lex >> name.c_str(); // check for name
	lex >> "CommandInset";
	params.read(lex);
	return true;
}


// FIXME This could take an InsetCode instead of a string
string InsetCommand::params2string(string const & name,
				  InsetCommandParams const & params)
{
	ostringstream data;
	data << name << ' ';
	params.write(data);
	data << "\\end_inset\n";
	return data.str();
}


bool decodeInsetParam(string const & name, string & data,
	Buffer const & buffer)
{
	InsetCode const code = insetCode(name);
	switch (code) {
	case BIBITEM_CODE:
	case BIBTEX_CODE:
	case INDEX_CODE:
	case LABEL_CODE:
	case NOMENCL_CODE:
	case NOMENCL_PRINT_CODE:
	case REF_CODE:
	case TOC_CODE:
	case HYPERLINK_CODE: {
		InsetCommandParams p(code);
		data = InsetCommand::params2string(name, p);
		break;
	}
	case INCLUDE_CODE: {
		// data is the include type: one of "include",
		// "input", "verbatiminput" or "verbatiminput*"
		if (data.empty())
			// default type is requested
			data = "include";
		InsetCommandParams p(INCLUDE_CODE, data);
		data = InsetCommand::params2string("include", p);
		break;
	}
	case BOX_CODE: {
		// \c data == "Boxed" || "Frameless" etc
		InsetBoxParams p(data);
		data = InsetBox::params2string(p);
		break;
	}
	case BRANCH_CODE: {
		InsetBranchParams p;
		data = InsetBranch::params2string(p);
		break;
	}
	case CITE_CODE: {
		InsetCommandParams p(CITE_CODE);
		data = InsetCommand::params2string(name, p);
		break;
	}
	case ERT_CODE: {
		data = InsetERT::params2string(InsetCollapsable::Open);
		break;
	}
	case EXTERNAL_CODE: {
		InsetExternalParams p;
		data = InsetExternal::params2string(p, buffer);
		break;
	}
	case FLOAT_CODE:  {
		InsetFloatParams p;
		data = InsetFloat::params2string(p);
		break;
	}
	case LISTINGS_CODE: {
		InsetListingsParams p;
		data = InsetListings::params2string(p);
		break;
	}
	case GRAPHICS_CODE: {
		InsetGraphicsParams p;
		data = InsetGraphics::params2string(p, buffer);
		break;
	}
	case NOTE_CODE: {
		InsetNoteParams p;
		data = InsetNote::params2string(p);
		break;
	}
	case PHANTOM_CODE: {
		InsetPhantomParams p;
		data = InsetPhantom::params2string(p);
		break;
	}
	case SPACE_CODE: {
		InsetSpaceParams p;
		data = InsetSpace::params2string(p);
		break;
	}
	case VSPACE_CODE: {
		VSpace space;
		data = InsetVSpace::params2string(space);
		break;
	}
	case WRAP_CODE: {
		InsetWrapParams p;
		data = InsetWrap::params2string(p);
		break;
	}
	default:
		return false;
	} // end switch(code)
	return true;
}

} // namespace lyx