// -*- C++ -*-
/**
 * \file context.h
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Jean-Marc Lasgouttes
 *
 * Full author contact details are available in file CREDITS.
 */

#ifndef CONTEXT_H
#define CONTEXT_H

#include "lyxtextclass.h"


/*!
 * Small helper struct that holds font properties.
 * The names are in LyX language, not LaTeX.
 * We don't use LyXFont, because it pulls in a lot of dependencies and has
 * more strings than needed (e.g. font family error1 etc.).
 * If more font related stuff is needed, it might be good to change to
 * LyXFont.
 */
class Font {
public:
	Font()
	{
		init();
	}
	void init()
	{
		size = "normal";
		family = "default";
		series = "default";
		shape = "default";
	}
	std::string size;
	std::string family;
	std::string series;
	std::string shape;
};


// A helper struct
class Context {
public:
	Context(bool need_layout_,
		LyXTextClass const & textclass_,
		LyXLayout_ptr layout_ = LyXLayout_ptr(),
		LyXLayout_ptr parent_layout_= LyXLayout_ptr(),
	        Font font_ = Font());

	// Output a \begin_layout is requested
	void check_layout(std::ostream & os);

	// Output a \end_layout if needed
	void check_end_layout(std::ostream & os);

	// Output a \begin_deeper if needed
	void check_deeper(std::ostream & os);

	// Output a \end_deeper if needed
	void check_end_deeper(std::ostream & os);

	// dump content on stream (for debugging purpose), with
	// description \c desc.
	void dump(std::ostream &, std::string const & desc = "context") const;

	/// Are we just beginning a new paragraph?
	bool atParagraphStart() const { return need_layout; }

	/// Begin an item in a list environment
	void set_item();

	/// Start a new paragraph
	void new_paragraph(std::ostream & os);

	/// Add extra stuff if not already there
	void add_extra_stuff(std::string const &);

	// Do we need to output some \begin_layout command before the
	// next characters?
	bool need_layout;
	// Do we need to output some \end_layout command
	bool need_end_layout;
	// We may need to add something after this \begin_layout command
	std::string extra_stuff;
	// If there has been an \begin_deeper, we'll need a matching
	// \end_deeper
	bool need_end_deeper;
	// If we are in an itemize-like environment, we need an \item
	// for each paragraph, otherwise this has to be a deeper
	// paragraph.
	bool has_item;
	// we are handling a standard paragraph in an itemize-like
	// environment
	bool deeper_paragraph;

	// The textclass of the document. Could actually be a global variable
	LyXTextClass const & textclass;
	// The layout of the current paragraph
	LyXLayout_ptr layout;
	// The layout of the outer paragraph (for environment layouts)
	LyXLayout_ptr parent_layout;
	/// font attributes of this context
	Font font;
};

#endif