/*
 *      sciwrappers.c - this file is part of Geany, a fast and lightweight IDE
 *
 *      Copyright 2005-2012 Enrico Tröger <enrico(dot)troeger(at)uvena(dot)de>
 *      Copyright 2006-2012 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com>
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License along
 *      with this program; if not, write to the Free Software Foundation, Inc.,
 *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/** @file sciwrappers.h
 * Wrapper functions for the Scintilla editor widget @c SCI_* messages.
 * You should also check the http://scintilla.org documentation, as it is more detailed.
 *
 * To get Scintilla notifications, use the
 * @link pluginsignals.c @c "editor-notify" signal @endlink.
 *
 * @note These functions were originally from the cssed project
 * (http://cssed.sf.net, thanks).
 * @see scintilla_send_message().
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "sciwrappers.h"

#include "utils.h"

#include <string.h>


#define SSM(s, m, w, l) scintilla_send_message(s, m, w, l)


/* line numbers visibility */
void sci_set_line_numbers(ScintillaObject *sci, gboolean set)
{
	if (set)
	{
		gchar tmp_str[15];
		gint len = (gint) SSM(sci, SCI_GETLINECOUNT, 0, 0);
		gint width;

		g_snprintf(tmp_str, 15, "_%d", len);
		width = sci_text_width(sci, STYLE_LINENUMBER, tmp_str);
		SSM(sci, SCI_SETMARGINWIDTHN, 0, width);
		SSM(sci, SCI_SETMARGINSENSITIVEN, 0, FALSE); /* use default behaviour */
	}
	else
	{
		SSM(sci, SCI_SETMARGINWIDTHN, 0, 0);
	}
}


void sci_set_mark_long_lines(ScintillaObject *sci, gint type, gint column, const gchar *colour)
{
	glong colour_val = utils_parse_color_to_bgr(colour); /* Scintilla uses a "long" value */

	if (column == 0)
		type = 2;
	switch (type)
	{
		case 0:
		{
			SSM(sci, SCI_SETEDGEMODE, EDGE_LINE, 0);
			break;
		}
		case 1:
		{
			SSM(sci, SCI_SETEDGEMODE, EDGE_BACKGROUND, 0);
			break;
		}
		case 2:
		{
			SSM(sci, SCI_SETEDGEMODE, EDGE_NONE, 0);
			return;
		}
	}
	SSM(sci, SCI_SETEDGECOLUMN, (uptr_t) column, 0);
	SSM(sci, SCI_SETEDGECOLOUR, (uptr_t) colour_val, 0);
}


/* symbol margin visibility */
void sci_set_symbol_margin(ScintillaObject *sci, gboolean set)
{
	if (set)
	{
		SSM(sci, SCI_SETMARGINWIDTHN, 1, 16);
		SSM(sci, SCI_SETMARGINSENSITIVEN, 1, TRUE);
	}
	else
	{
		SSM(sci, SCI_SETMARGINWIDTHN, 1, 0);
		SSM(sci, SCI_SETMARGINSENSITIVEN, 1, FALSE);
	}
}


/* folding margin visibility */
void sci_set_folding_margin_visible(ScintillaObject *sci, gboolean set)
{
	if (set)
	{
		SSM(sci, SCI_SETMARGINWIDTHN, 2, 12);
		SSM(sci, SCI_SETMARGINSENSITIVEN, 2, TRUE);
	}
	else
	{
		SSM(sci, SCI_SETMARGINSENSITIVEN, 2, FALSE);
		SSM(sci, SCI_SETMARGINWIDTHN, 2, 0);
	}
}


/* end of lines */
void sci_set_visible_eols(ScintillaObject *sci, gboolean set)
{
	SSM(sci, SCI_SETVIEWEOL, set != FALSE, 0);
}


void sci_set_visible_white_spaces(ScintillaObject *sci, gboolean set)
{
	if (set)
		SSM(sci, SCI_SETVIEWWS, SCWS_VISIBLEALWAYS, 0);
	else
		SSM(sci, SCI_SETVIEWWS, SCWS_INVISIBLE, 0);
}


void sci_set_lines_wrapped(ScintillaObject *sci, gboolean set)
{
	if (set)
		SSM(sci, SCI_SETWRAPMODE, SC_WRAP_WORD, 0);
	else
		SSM(sci, SCI_SETWRAPMODE, SC_WRAP_NONE, 0);
}


gint sci_get_eol_mode(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETEOLMODE, 0, 0);
}


void sci_set_eol_mode(ScintillaObject *sci, gint eolmode)
{
	SSM(sci, SCI_SETEOLMODE, (uptr_t) eolmode, 0);
}


void sci_convert_eols(ScintillaObject *sci, gint eolmode)
{
	SSM(sci, SCI_CONVERTEOLS, (uptr_t) eolmode, 0);
}


void sci_add_text(ScintillaObject *sci, const gchar *text)
{
	if (text != NULL)
	{ /* if null text is passed scintilla will segfault */
		SSM(sci, SCI_ADDTEXT, strlen(text), (sptr_t) text);
	}
}


/** Sets all text.
 * @param sci Scintilla widget.
 * @param text Text. */
GEANY_API_SYMBOL
void sci_set_text(ScintillaObject *sci, const gchar *text)
{
	if( text != NULL ){ /* if null text is passed to scintilla will segfault */
		SSM(sci, SCI_SETTEXT, 0, (sptr_t) text);
	}
}


gboolean sci_can_undo(ScintillaObject *sci)
{
	return SSM(sci, SCI_CANUNDO, 0, 0) != FALSE;
}


gboolean sci_can_redo(ScintillaObject *sci)
{
	return SSM(sci, SCI_CANREDO, 0, 0) != FALSE;
}


void sci_undo(ScintillaObject *sci)
{
	if (sci_can_undo(sci))
		SSM(sci, SCI_UNDO, 0, 0);
}


void sci_redo(ScintillaObject *sci)
{
	if (sci_can_redo(sci))
		SSM(sci, SCI_REDO, 0, 0);
}


/** Begins grouping a set of edits together as one Undo action.
 * You must call sci_end_undo_action() after making your edits.
 * @param sci Scintilla @c GtkWidget. */
GEANY_API_SYMBOL
void sci_start_undo_action(ScintillaObject *sci)
{
	SSM(sci, SCI_BEGINUNDOACTION, 0, 0);
}


/** Ends grouping a set of edits together as one Undo action.
 * @param sci Scintilla @c GtkWidget.
 * @see sci_start_undo_action(). */
GEANY_API_SYMBOL
void sci_end_undo_action(ScintillaObject *sci)
{
	SSM(sci, SCI_ENDUNDOACTION, 0, 0);
}


void sci_set_undo_collection(ScintillaObject *sci, gboolean set)
{
	SSM(sci, SCI_SETUNDOCOLLECTION, set != FALSE, 0);
}


void sci_empty_undo_buffer(ScintillaObject *sci)
{
	SSM(sci, SCI_EMPTYUNDOBUFFER, 0, 0);
}


gboolean sci_is_modified(ScintillaObject *sci)
{
	return (SSM(sci, SCI_GETMODIFY, 0, 0) != 0);
}


void sci_zoom_in(ScintillaObject *sci)
{
	SSM(sci, SCI_ZOOMIN, 0, 0);
}


void sci_zoom_out(ScintillaObject *sci)
{
	SSM(sci, SCI_ZOOMOUT, 0, 0);
}


void sci_zoom_off(ScintillaObject *sci)
{
	SSM(sci, SCI_SETZOOM, 0, 0);
}


/** Sets a line marker.
 * @param sci Scintilla widget.
 * @param line_number Line number.
 * @param marker Marker number. */
GEANY_API_SYMBOL
void sci_set_marker_at_line(ScintillaObject *sci, gint line_number, gint marker)
{
	SSM(sci, SCI_MARKERADD, (uptr_t) line_number, marker);
}


/** Deletes a line marker.
 * @param sci Scintilla widget.
 * @param line_number Line number.
 * @param marker Marker number. */
GEANY_API_SYMBOL
void sci_delete_marker_at_line(ScintillaObject *sci, gint line_number, gint marker)
{
	SSM(sci, SCI_MARKERDELETE, (uptr_t) line_number, marker);
}


/** Checks if a line has a marker set.
 * @param sci Scintilla widget.
 * @param line Line number.
 * @param marker Marker number.
 * @return Whether it's set. */
GEANY_API_SYMBOL
gboolean sci_is_marker_set_at_line(ScintillaObject *sci, gint line, gint marker)
{
	gint state;

	state = (gint) SSM(sci, SCI_MARKERGET, (uptr_t) line, 0);
	return (state & (1 << marker));
}


void sci_toggle_marker_at_line(ScintillaObject *sci, gint line, gint marker)
{
	gboolean set = sci_is_marker_set_at_line(sci, line, marker);

	if (!set)
		sci_set_marker_at_line(sci, line, marker);
	else
		sci_delete_marker_at_line(sci, line, marker);
}


/* Returns the line number of the next marker that matches marker_mask, or -1.
 * marker_mask is a bitor of 1 << marker_index. (See MarkerHandleSet::MarkValue()).
 * Note: If there is a marker on the line, it returns the same line. */
gint sci_marker_next(ScintillaObject *sci, gint line, gint marker_mask, gboolean wrap)
{
	gint marker_line;

	marker_line = (gint) SSM(sci, SCI_MARKERNEXT, (uptr_t) line, marker_mask);
	if (wrap && marker_line == -1)
		marker_line = (gint) SSM(sci, SCI_MARKERNEXT, 0, marker_mask);
	return marker_line;
}


/* Returns the line number of the previous marker that matches marker_mask, or -1.
 * marker_mask is a bitor of 1 << marker_index. (See MarkerHandleSet::MarkValue()).
 * Note: If there is a marker on the line, it returns the same line. */
gint sci_marker_previous(ScintillaObject *sci, gint line, gint marker_mask, gboolean wrap)
{
	gint marker_line;

	marker_line = (gint) SSM(sci, SCI_MARKERPREVIOUS, (uptr_t) line, marker_mask);
	if (wrap && marker_line == -1)
	{
		gint len = sci_get_length(sci);
		gint last_line = sci_get_line_from_position(sci, len - 1);

		marker_line = (gint) SSM(sci, SCI_MARKERPREVIOUS, (uptr_t) last_line, marker_mask);
	}
	return marker_line;
}


/** Gets the line number from @a position.
 * @param sci Scintilla widget.
 * @param position Position.
 * @return The line. */
GEANY_API_SYMBOL
gint sci_get_line_from_position(ScintillaObject *sci, gint position)
{
	return (gint) SSM(sci, SCI_LINEFROMPOSITION, (uptr_t) position, 0);
}


/** Gets the column number relative to the start of the line that @a position is on.
 * @param sci Scintilla widget.
 * @param position Position.
 * @return The column. */
GEANY_API_SYMBOL
gint sci_get_col_from_position(ScintillaObject *sci, gint position)
{
	return (gint) SSM(sci, SCI_GETCOLUMN, (uptr_t) position, 0);
}


gint sci_get_position_from_col(ScintillaObject *sci, gint line, gint col)
{
	return (gint) SSM(sci, SCI_FINDCOLUMN, line, col);
}


/** Gets the position for the start of @a line.
 * @param sci Scintilla widget.
 * @param line Line.
 * @return Position. */
GEANY_API_SYMBOL
gint sci_get_position_from_line(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_POSITIONFROMLINE, (uptr_t) line, 0);
}


/** Gets the cursor position.
 * @param sci Scintilla widget.
 * @return Position. */
GEANY_API_SYMBOL
gint sci_get_current_position(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETCURRENTPOS, 0, 0);
}


gint sci_get_cursor_virtual_space(ScintillaObject *sci)
{
	gint selection_mode = sci_get_selection_mode(sci);

	return selection_mode == SC_SEL_RECTANGLE || selection_mode == SC_SEL_THIN ?
		SSM(sci, SCI_GETRECTANGULARSELECTIONCARETVIRTUALSPACE, 0, 0) :
		SSM(sci, SCI_GETSELECTIONNCARETVIRTUALSPACE,
			SSM(sci, SCI_GETMAINSELECTION, 0, 0), 0);
}


/** Sets the cursor position.
 * @param sci Scintilla widget.
 * @param position Position.
 * @param scroll_to_caret Whether to scroll the cursor in view. */
GEANY_API_SYMBOL
void sci_set_current_position(ScintillaObject *sci, gint position, gboolean scroll_to_caret)
{
	if (scroll_to_caret)
		SSM(sci, SCI_GOTOPOS, (uptr_t) position, 0);
	else
	{
		SSM(sci, SCI_SETCURRENTPOS, (uptr_t) position, 0);
		SSM(sci, SCI_SETANCHOR, (uptr_t) position, 0); /* to avoid creation of a selection */
	}
	SSM(sci, SCI_CHOOSECARETX, 0, 0);
}


/* Set the cursor line without scrolling the view.
 * Use sci_goto_line() to also scroll. */
void sci_set_current_line(ScintillaObject *sci, gint line)
{
	gint pos = sci_get_position_from_line(sci, line);
	sci_set_current_position(sci, pos, FALSE);
}


/** Gets the total number of lines.
 * @param sci Scintilla widget.
 * @return The line count. */
GEANY_API_SYMBOL
gint sci_get_line_count(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETLINECOUNT, 0, 0);
}


/** Sets the selection start position.
 * @param sci Scintilla widget.
 * @param position Position. */
GEANY_API_SYMBOL
void sci_set_selection_start(ScintillaObject *sci, gint position)
{
	SSM(sci, SCI_SETSELECTIONSTART, (uptr_t) position, 0);
}


/** Sets the selection end position.
 * @param sci Scintilla widget.
 * @param position Position. */
GEANY_API_SYMBOL
void sci_set_selection_end(ScintillaObject *sci, gint position)
{
	SSM(sci, SCI_SETSELECTIONEND, (uptr_t) position, 0);
}


void sci_set_selection(ScintillaObject *sci, gint anchorPos, gint currentPos)
{
	SSM(sci, SCI_SETSEL, (uptr_t) anchorPos, currentPos);
}


/** Gets the position at the end of a line
 * @param sci Scintilla widget.
 * @param line Line.
 * @return The position at the end of the line. */
GEANY_API_SYMBOL
gint sci_get_line_end_position(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETLINEENDPOSITION, (uptr_t) line, 0);
}


void sci_cut(ScintillaObject *sci)
{
	SSM(sci, SCI_CUT, 0, 0);
}


void sci_copy(ScintillaObject *sci)
{
	SSM(sci, SCI_COPY, 0, 0);
}


void sci_paste(ScintillaObject *sci)
{
	SSM(sci, SCI_PASTE, 0, 0);
}


void sci_clear(ScintillaObject *sci)
{
	SSM(sci, SCI_CLEAR, 0, 0);
}


/** Gets the selection start position.
 * @param sci Scintilla widget.
 * @return Position. */
GEANY_API_SYMBOL
gint sci_get_selection_start(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETSELECTIONSTART, 0, 0);
}


/** Gets the selection end position.
 * @param sci Scintilla widget.
 * @return Position. */
GEANY_API_SYMBOL
gint sci_get_selection_end(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETSELECTIONEND, 0, 0);
}


/** Replaces selection.
 * @param sci Scintilla widget.
 * @param text Text. */
GEANY_API_SYMBOL
void sci_replace_sel(ScintillaObject *sci, const gchar *text)
{
	SSM(sci, SCI_REPLACESEL, 0, (sptr_t) text);
}


/** Gets the length of all text.
 * @param sci Scintilla widget.
 * @return Length. */
GEANY_API_SYMBOL
gint sci_get_length(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETLENGTH, 0, 0);
}


/** Gets the currently used lexer
 * @param sci Scintilla widget.
 * @returns The lexer ID
 */
GEANY_API_SYMBOL
gint sci_get_lexer(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETLEXER, 0, 0);
}


void sci_set_lexer(ScintillaObject *sci, guint lexer_id)
{
	gint old = sci_get_lexer(sci);

	SSM(sci, SCI_SETLEXER, lexer_id, 0);

	if (old != (gint)lexer_id)
		SSM(sci, SCI_CLEARDOCUMENTSTYLE, 0, 0);
}


/** Gets line length.
 * @param sci Scintilla widget.
 * @param line Line number.
 * @return Length. */
GEANY_API_SYMBOL
gint sci_get_line_length(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_LINELENGTH, (uptr_t) line, 0);
}


/* safe way to read Scintilla string into new memory.
 * works with any string buffer messages that follow the Windows message convention. */
gchar *sci_get_string(ScintillaObject *sci, guint msg, gulong wParam)
{
	gint size = (gint) SSM(sci, msg, wParam, 0);
	gchar *str = g_malloc(size + 1);

	SSM(sci, msg, wParam, (sptr_t) str);
	str[size] = '\0';	/* ensure termination, needed for SCI_GETLINE */
	return str;
}


/** Gets line contents.
 * @param sci Scintilla widget.
 * @param line_num Line number.
 * @return A @c NULL-terminated copy of the line text. */
GEANY_API_SYMBOL
gchar *sci_get_line(ScintillaObject *sci, gint line_num)
{
	return sci_get_string(sci, SCI_GETLINE, (gulong) line_num);
}


/** Gets all text.
 * @deprecated sci_get_text is deprecated and should not be used in newly-written code.
 * Use sci_get_contents() instead.
 *
 * @param sci Scintilla widget.
 * @param len Length of @a text buffer, usually sci_get_length() + 1.
 * @param text Text buffer; must be allocated @a len + 1 bytes for null-termination. */
GEANY_API_SYMBOL
void sci_get_text(ScintillaObject *sci, gint len, gchar *text)
{
	SSM(sci, SCI_GETTEXT, (uptr_t) len, (sptr_t) text);
}


/** Allocates and fills a buffer with text from the start of the document.
 * @param sci Scintilla widget.
 * @param buffer_len Buffer length to allocate, including the terminating
 * null char, e.g. sci_get_length() + 1. Alternatively use @c -1 to get all
 * text (since Geany 1.23).
 * @return A copy of the text. Should be freed when no longer needed.
 *
 * @since 1.23 (0.17)
 */
GEANY_API_SYMBOL
gchar *sci_get_contents(ScintillaObject *sci, gint buffer_len)
{
	gchar *text;

	if (buffer_len < 0)
		buffer_len = sci_get_length(sci) + 1;

	text = g_malloc(buffer_len);
	SSM(sci, SCI_GETTEXT, (uptr_t) buffer_len, (sptr_t) text);
	return text;
}


/** Gets selected text.
 * @deprecated sci_get_selected_text is deprecated and should not be used in newly-written code.
 * Use sci_get_selection_contents() instead.
 *
 * @param sci Scintilla widget.
 * @param text Text buffer; must be allocated sci_get_selected_text_length() + 1 bytes
 * for null-termination. */
GEANY_API_SYMBOL
void sci_get_selected_text(ScintillaObject *sci, gchar *text)
{
	SSM(sci, SCI_GETSELTEXT, 0, (sptr_t) text);
}


/** Gets selected text.
 * @param sci Scintilla widget.
 *
 * @return The selected text. Should be freed when no longer needed.
 *
 * @since 0.17
 */
GEANY_API_SYMBOL
gchar *sci_get_selection_contents(ScintillaObject *sci)
{
	return sci_get_string(sci, SCI_GETSELTEXT, 0);
}


/** Gets selected text length.
 * @param sci Scintilla widget.
 * @return Length. */
GEANY_API_SYMBOL
gint sci_get_selected_text_length(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETSELTEXT, 0, 0);
}


gint sci_get_position_from_xy(ScintillaObject *sci, gint x, gint y, gboolean nearby)
{
	/* for nearby return -1 if there is no character near to the x,y point. */
	return (gint) SSM(sci, (nearby) ? SCI_POSITIONFROMPOINTCLOSE : SCI_POSITIONFROMPOINT, (uptr_t) x, y);
}


/** Checks if a line is visible (folding may have hidden it).
 * @param sci Scintilla widget.
 * @param line Line number.
 * @return Whether @a line will be drawn on the screen. */
GEANY_API_SYMBOL
gboolean sci_get_line_is_visible(ScintillaObject *sci, gint line)
{
	return SSM(sci, SCI_GETLINEVISIBLE, (uptr_t) line, 0) != FALSE;
}


/** Makes @a line visible (folding may have hidden it).
 * @param sci Scintilla widget.
 * @param line Line number. */
GEANY_API_SYMBOL
void sci_ensure_line_is_visible(ScintillaObject *sci, gint line)
{
	SSM(sci, SCI_ENSUREVISIBLE, (uptr_t) line, 0);
}


gint sci_get_fold_level(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETFOLDLEVEL, (uptr_t) line, 0);
}


/* Get the line number of the fold point before start_line, or -1 if there isn't one */
gint sci_get_fold_parent(ScintillaObject *sci, gint start_line)
{
	return (gint) SSM(sci, SCI_GETFOLDPARENT, (uptr_t) start_line, 0);
}


void sci_toggle_fold(ScintillaObject *sci, gint line)
{
	SSM(sci, SCI_TOGGLEFOLD, (uptr_t) line, 0);
}


gboolean sci_get_fold_expanded(ScintillaObject *sci, gint line)
{
	return SSM(sci, SCI_GETFOLDEXPANDED, (uptr_t) line, 0) != FALSE;
}


void sci_colourise(ScintillaObject *sci, gint start, gint end)
{
	SSM(sci, SCI_COLOURISE, (uptr_t) start, end);
}


void sci_clear_all(ScintillaObject *sci)
{
	SSM(sci, SCI_CLEARALL, 0, 0);
}


gint sci_get_end_styled(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETENDSTYLED, 0, 0);
}


void sci_set_tab_width(ScintillaObject *sci, gint width)
{
	SSM(sci, SCI_SETTABWIDTH, (uptr_t) width, 0);
}


/** Gets display tab width (this is not indent width, see GeanyIndentPrefs).
 * @param sci Scintilla widget.
 * @return Width.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
gint sci_get_tab_width(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETTABWIDTH, 0, 0);
}


/** Gets a character.
 * @param sci Scintilla widget.
 * @param pos Position.
 * @return Char. */
GEANY_API_SYMBOL
gchar sci_get_char_at(ScintillaObject *sci, gint pos)
{
	return (gchar) SSM(sci, SCI_GETCHARAT, (uptr_t) pos, 0);
}


void sci_set_savepoint(ScintillaObject *sci)
{
	SSM(sci, SCI_SETSAVEPOINT, 0, 0);
}


void sci_set_indentation_guides(ScintillaObject *sci, gint mode)
{
	SSM(sci, SCI_SETINDENTATIONGUIDES, (uptr_t) mode, 0);
}


void sci_use_popup(ScintillaObject *sci, gboolean enable)
{
	SSM(sci, SCI_USEPOPUP, enable != FALSE, 0);
}


/** Checks if there's a selection.
 * @param sci Scintilla widget.
 * @return Whether a selection is present.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
gboolean sci_has_selection(ScintillaObject *sci)
{
	if (SSM(sci, SCI_GETSELECTIONEND, 0, 0) - SSM(sci, SCI_GETSELECTIONSTART, 0, 0))
		return TRUE;
	else
		return FALSE;
}


void sci_goto_pos(ScintillaObject *sci, gint pos, gboolean unfold)
{
	if (unfold) SSM(sci, SCI_ENSUREVISIBLE, (uptr_t) SSM(sci, SCI_LINEFROMPOSITION, (uptr_t) pos, 0), 0);
	SSM(sci, SCI_GOTOPOS, (uptr_t) pos, 0);
}


void sci_set_search_anchor(ScintillaObject *sci)
{
	SSM(sci, SCI_SEARCHANCHOR, 0, 0);
}


/* removes a selection if pos < 0 */
void sci_set_anchor(ScintillaObject *sci, gint pos)
{
	if (pos < 0)
		pos = sci_get_current_position(sci);

	SSM(sci, SCI_SETANCHOR, (uptr_t) pos, 0);
}


/** Scrolls the cursor in view.
 * @param sci Scintilla widget. */
GEANY_API_SYMBOL
void sci_scroll_caret(ScintillaObject *sci)
{
	SSM(sci, SCI_SCROLLCARET, 0, 0);
}


void sci_scroll_columns(ScintillaObject *sci, gint columns)
{
	SSM(sci, SCI_LINESCROLL, (uptr_t) columns, 0);
}


gint sci_search_next(ScintillaObject *sci, gint flags, const gchar *text)
{
	/* FIXME: SCI_SEACHNEXT() actually returns long */
	return (gint) SSM(sci, SCI_SEARCHNEXT, (uptr_t) flags, (sptr_t) text);
}


gint sci_search_prev(ScintillaObject *sci, gint flags, const gchar *text)
{
	/* FIXME: SCI_SEACHPREV() actually returns long */
	return (gint) SSM(sci, SCI_SEARCHPREV, (uptr_t) flags, (sptr_t) text);
}


/** Finds text in the document.
 * The @a ttf argument should be a pointer to a Sci_TextToFind structure which contains
 * the text to find and the range in which the text should be searched.
 *
 * Please refer to the Scintilla documentation for a more detailed description.
 *
 * @param sci Scintilla widget.
 * @param flags Bitmask of Scintilla search flags (@c SCFIND_*, see Scintilla documentation).
 * @param ttf Pointer to a TextToFind structure which contains the text to find and the range.
 * @return The position of the start of the found text if it succeeds, otherwise @c -1.
 *         The @c chrgText.cpMin and @c chrgText.cpMax members of @c TextToFind are filled in
 *         with the start and end positions of the found text.
 */
GEANY_API_SYMBOL
gint sci_find_text(ScintillaObject *sci, gint flags, struct Sci_TextToFind *ttf)
{
	return (gint) SSM(sci, SCI_FINDTEXT, (uptr_t) flags, (sptr_t) ttf);
}


/** Sets the font for a particular style.
 * @param sci Scintilla widget.
 * @param style The style.
 * @param font The font name.
 * @param size The font size. */
GEANY_API_SYMBOL
void sci_set_font(ScintillaObject *sci, gint style, const gchar *font, gint size)
{
	SSM(sci, SCI_STYLESETFONT, (uptr_t) style, (sptr_t) font);
	SSM(sci, SCI_STYLESETSIZE, (uptr_t) style, size);
}


/** Jumps to the specified line in the document.
 * If @a unfold is set and @a line is hidden by a fold, it is unfolded
 * first to ensure it is visible.
 * @param sci Scintilla widget.
 * @param line Line.
 * @param unfold Whether to unfold first.
 */
GEANY_API_SYMBOL
void sci_goto_line(ScintillaObject *sci, gint line, gboolean unfold)
{
	if (unfold) SSM(sci, SCI_ENSUREVISIBLE, (uptr_t) line, 0);
	SSM(sci, SCI_GOTOLINE, (uptr_t) line, 0);
}


void sci_marker_delete_all(ScintillaObject *sci, gint marker)
{
	SSM(sci, SCI_MARKERDELETEALL, (uptr_t) marker, 0);
}


/** Gets style ID at @a position.
 * @param sci Scintilla widget.
 * @param position Position.
 * @return Style ID. */
GEANY_API_SYMBOL
gint sci_get_style_at(ScintillaObject *sci, gint position)
{
	return (gint) SSM(sci, SCI_GETSTYLEAT, (uptr_t) position, 0);
}


void sci_set_codepage(ScintillaObject *sci, gint cp)
{
	g_return_if_fail(cp == 0 || cp == SC_CP_UTF8);
	SSM(sci, SCI_SETCODEPAGE, (uptr_t) cp, 0);
}


void sci_assign_cmdkey(ScintillaObject *sci, gint key, gint command)
{
	SSM(sci, SCI_ASSIGNCMDKEY, (uptr_t) key, command);
}


void sci_clear_cmdkey(ScintillaObject *sci, gint key)
{
	SSM(sci, SCI_CLEARCMDKEY, (uptr_t) key, 0);
}


/** Gets text between @a start and @a end.
 * @deprecated sci_get_text_range is deprecated and should not be used in newly-written code.
 * Use sci_get_contents_range() instead.
 *
 * @param sci Scintilla widget.
 * @param start Start.
 * @param end End.
 * @param text Text will be zero terminated and must be allocated (end - start + 1) bytes. */
GEANY_API_SYMBOL
void sci_get_text_range(ScintillaObject *sci, gint start, gint end, gchar *text)
{
	struct Sci_TextRange tr;
	tr.chrg.cpMin = start;
	tr.chrg.cpMax = end;
	tr.lpstrText = text;
	SSM(sci, SCI_GETTEXTRANGE, 0, (sptr_t) &tr);
}


/** Gets text between @a start and @a end.
 * @param sci Scintilla widget.
 * @param start Start position.
 * @param end End position.
 * @return The text inside the given range. Should be freed when no longer needed.
 *
 * @since 0.17
 */
GEANY_API_SYMBOL
gchar *sci_get_contents_range(ScintillaObject *sci, gint start, gint end)
{
	gchar *text;

	g_return_val_if_fail(start < end, NULL);

	text = g_malloc((gsize) (end - start) + 1);
	sci_get_text_range(sci, start, end, text);
	return text;
}


void sci_line_duplicate(ScintillaObject *sci)
{
	SSM(sci, SCI_LINEDUPLICATE, 0, 0);
}


void sci_selection_duplicate(ScintillaObject *sci)
{
	SSM(sci, SCI_SELECTIONDUPLICATE, 0, 0);
}


/** Inserts text.
 * @param sci Scintilla widget.
 * @param pos Position, or -1 for current.
 * @param text Text. */
GEANY_API_SYMBOL
void sci_insert_text(ScintillaObject *sci, gint pos, const gchar *text)
{
	SSM(sci, SCI_INSERTTEXT, (uptr_t) pos, (sptr_t) text);
}


GEANY_API_SYMBOL
void sci_set_target_start(ScintillaObject *sci, gint start)
{
	SSM(sci, SCI_SETTARGETSTART, (uptr_t) start, 0);
}


GEANY_API_SYMBOL
void sci_set_target_end(ScintillaObject *sci, gint end)
{
	SSM(sci, SCI_SETTARGETEND, (uptr_t) end, 0);
}


GEANY_API_SYMBOL
gint sci_replace_target(ScintillaObject *sci, const gchar *text, gboolean regex)
{
	return (gint) SSM(sci, (regex) ? SCI_REPLACETARGETRE : SCI_REPLACETARGET, (uptr_t) -1, (sptr_t) text);
}


void sci_set_keywords(ScintillaObject *sci, guint k, const gchar *text)
{
	SSM(sci, SCI_SETKEYWORDS, k, (sptr_t) text);
}


void sci_set_readonly(ScintillaObject *sci, gboolean readonly)
{
	SSM(sci, SCI_SETREADONLY, readonly != FALSE, 0);
}


/** Sends Scintilla commands without any parameters.
 * @param sci The Scintilla @c GtkWidget.
 * @param cmd @c SCI_COMMAND.
 * @see http://scintilla.org for the documentation.
 *
 *  @since 0.16
 */
GEANY_API_SYMBOL
void sci_send_command(ScintillaObject *sci, gint cmd)
{
	SSM(sci, cmd, 0, 0);
}


/** Gets current line number.
 * @param sci Scintilla widget.
 * @return Line number. */
GEANY_API_SYMBOL
gint sci_get_current_line(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_LINEFROMPOSITION, (uptr_t) SSM(sci, SCI_GETCURRENTPOS, 0, 0), 0);
}


/* Get number of lines partially or fully selected.
 * Returns 1 if there is a partial selection on the same line.
 * Returns 2 if a whole line is selected including the line break char(s). */
gint sci_get_lines_selected(ScintillaObject *sci)
{
	gint start = (gint) SSM(sci, SCI_GETSELECTIONSTART, 0, 0);
	gint end = (gint) SSM(sci, SCI_GETSELECTIONEND, 0, 0);
	gint line_start;
	gint line_end;

	if (start == end)
		return 0; /* no selection */

	line_start = (gint) SSM(sci, SCI_LINEFROMPOSITION, (uptr_t) start, 0);
	line_end = (gint) SSM(sci, SCI_LINEFROMPOSITION, (uptr_t) end, 0);

	return line_end - line_start + 1;
}


gint sci_get_first_visible_line(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETFIRSTVISIBLELINE, 0, 0);
}


/**
 *  Sets the current indicator. This is necessary to define an indicator for a range of text or
 *  clearing indicators for a range of text.
 *
 *  @param sci Scintilla widget.
 *  @param indic The indicator number to set.
 *
 *  @see sci_indicator_clear
 *
 *  @since 0.16
 */
GEANY_API_SYMBOL
void sci_indicator_set(ScintillaObject *sci, gint indic)
{
	SSM(sci, SCI_SETINDICATORCURRENT, (uptr_t) indic, 0);
}


void sci_indicator_fill(ScintillaObject *sci, gint pos, gint len)
{
	SSM(sci, SCI_INDICATORFILLRANGE, (uptr_t) pos, len);
}


/**
 *  Clears the currently set indicator from a range of text.
 *  Starting at @a pos, @a len characters long.
 *  In order to make this function properly, you need to set the current indicator before with
 *  @ref sci_indicator_set().
 *
 *  @param sci Scintilla widget.
 *  @param pos Starting position.
 *  @param len Length.
 *
 *  @since 0.16
 */
GEANY_API_SYMBOL
void sci_indicator_clear(ScintillaObject *sci, gint pos, gint len)
{
	SSM(sci, SCI_INDICATORCLEARRANGE, (uptr_t) pos, len);
}


void sci_select_all(ScintillaObject *sci)
{
	SSM(sci, SCI_SELECTALL, 0, 0);
}


gint sci_get_line_indent_position(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETLINEINDENTPOSITION, (uptr_t) line, 0);
}


void sci_set_autoc_max_height(ScintillaObject *sci, gint val)
{
	SSM(sci, SCI_AUTOCSETMAXHEIGHT, (uptr_t) val, 0);
}


/** Finds a matching brace at @a pos.
 * @param sci Scintilla widget.
 * @param pos Position.
 * @return Matching brace position.
 *
 * @since 0.15
 **/
GEANY_API_SYMBOL
gint sci_find_matching_brace(ScintillaObject *sci, gint pos)
{
	return (gint) SSM(sci, SCI_BRACEMATCH, (uptr_t) pos, 0);
}


gint sci_get_overtype(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETOVERTYPE, 0, 0);
}


void sci_set_tab_indents(ScintillaObject *sci, gboolean set)
{
	SSM(sci, SCI_SETTABINDENTS, set != FALSE, 0);
}


void sci_set_use_tabs(ScintillaObject *sci, gboolean set)
{
	SSM(sci, SCI_SETUSETABS, set != FALSE, 0);
}


gint sci_get_pos_at_line_sel_start(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETLINESELSTARTPOSITION, (uptr_t) line, 0);
}


gint sci_get_pos_at_line_sel_end(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETLINESELENDPOSITION, (uptr_t) line, 0);
}


/** Gets selection mode.
 * @param sci Scintilla widget.
 * @return Selection mode. */
GEANY_API_SYMBOL
gint sci_get_selection_mode(ScintillaObject *sci)
{
	return (gint) SSM(sci, SCI_GETSELECTIONMODE, 0, 0);
}


/** Sets selection mode.
 * @param sci Scintilla widget.
 * @param mode Mode. */
GEANY_API_SYMBOL
void sci_set_selection_mode(ScintillaObject *sci, gint mode)
{
	SSM(sci, SCI_SETSELECTIONMODE, (uptr_t) mode, 0);
}


void sci_set_scrollbar_mode(ScintillaObject *sci, gboolean visible)
{
	SSM(sci, SCI_SETHSCROLLBAR, visible != FALSE, 0);
	SSM(sci, SCI_SETVSCROLLBAR, visible != FALSE, 0);
}


/** Sets the indentation of a line.
 * @param sci Scintilla widget.
 * @param line Line to indent.
 * @param indent Indentation width.
 *
 * @since 0.19
 */
GEANY_API_SYMBOL
void sci_set_line_indentation(ScintillaObject *sci, gint line, gint indent)
{
	SSM(sci, SCI_SETLINEINDENTATION, (uptr_t) line, indent);
}


/** Gets the indentation width of a line.
 * @param sci Scintilla widget.
 * @param line Line to get the indentation from.
 * @return Indentation width.
 *
 * @since 0.19
 */
GEANY_API_SYMBOL
gint sci_get_line_indentation(ScintillaObject *sci, gint line)
{
	return (gint) SSM(sci, SCI_GETLINEINDENTATION, (uptr_t) line, 0);
}


void sci_set_caret_policy_x(ScintillaObject *sci, gint policy, gint slop)
{
	SSM(sci, SCI_SETXCARETPOLICY, (uptr_t) policy, slop);
}


void sci_set_caret_policy_y(ScintillaObject *sci, gint policy, gint slop)
{
	SSM(sci, SCI_SETYCARETPOLICY, (uptr_t) policy, slop);
}


void sci_set_scroll_stop_at_last_line(ScintillaObject *sci, gboolean set)
{
	SSM(sci, SCI_SETENDATLASTLINE, set != FALSE, 0);
}


void sci_cancel(ScintillaObject *sci)
{
	SSM(sci, SCI_CANCEL, 0, 0);
}


gint sci_get_position_after(ScintillaObject *sci, gint start)
{
	return (gint) SSM(sci, SCI_POSITIONAFTER, (uptr_t) start, 0);
}


void sci_lines_join(ScintillaObject *sci)
{
	SSM(sci, SCI_LINESJOIN, 0, 0);
}


gint sci_text_width(ScintillaObject *sci, gint styleNumber, const gchar *text)
{
	return (gint) SSM(sci, SCI_TEXTWIDTH, (uptr_t) styleNumber, (sptr_t) text);
}


void sci_move_selected_lines_down(ScintillaObject *sci)
{
	SSM(sci, SCI_MOVESELECTEDLINESDOWN, 0, 0);
}


void sci_move_selected_lines_up(ScintillaObject *sci)
{
	SSM(sci, SCI_MOVESELECTEDLINESUP, 0, 0);
}


gint sci_word_start_position(ScintillaObject *sci, gint position, gboolean onlyWordCharacters)
{
	return SSM(sci, SCI_WORDSTARTPOSITION, position, onlyWordCharacters);
}


gint sci_word_end_position(ScintillaObject *sci, gint position, gboolean onlyWordCharacters)
{
	return SSM(sci, SCI_WORDENDPOSITION, position, onlyWordCharacters);
}