/*
 * Copyright (C) 2001,2002,2003,2009,2010 Red Hat, Inc.
 *
 * This is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Library 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 Library General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef vte_vte_h_included
#define vte_vte_h_included

#include <glib.h>
#include <gio/gio.h>
#include <pango/pango.h>
#include <gtk/gtk.h>

#include <sys/types.h> /* for pid_t */

#define __VTE_VTE_H_INSIDE__ 1

#include "vtetypebuiltins.h"
#include "vteversion.h"

#undef __VTE_VTE_H_INSIDE__

G_BEGIN_DECLS

/* Private implementation details. */
typedef struct _VteTerminalPrivate VteTerminalPrivate;

/* The terminal widget itself. */
typedef struct _VteTerminal VteTerminal;

/**
 * VteTerminal:
 * @widget: Base #GtkWidget of the terminal widget.
 * @adjustment: Scroll bar adjustments.
 * @char_width: Width of a narrow character cell.
 * @char_height: Height of a character cell.
 * @char_ascent: The distance (in pixels) from the baseline of drawn text to the top of the character cell.
 * @char_descent: The distance (in pixels) from the baseline of drawn text to the bottom of the character cell.
 * @row_count: Number of visible rows.
 * @column_count: Number of visible columns.
 * @window_title: The terminal's idea of what the window's title should be.
 * @icon_title: The terminal's idea of what the window's title should be when iconified.
 * 
 * All of these fields should be considered read-only.
 */
struct _VteTerminal {
	/*< public >*/

	/* Widget implementation stuffs. */
	GtkWidget widget;
	GtkAdjustment *adjustment;	/* Scrolling adjustment. */

	/* Metric and sizing data. */
	glong char_width, char_height;	/* dimensions of character cells */
	glong char_ascent, char_descent; /* important font metrics */
	glong row_count, column_count;	/* dimensions of the window */

	/* Titles. */
	char *window_title;
	char *icon_title;

	/*< private >*/
	VteTerminalPrivate *pvt;
};

/* The widget's class structure. */
typedef struct _VteTerminalClass VteTerminalClass;

/**
 * VteTerminalClass:
 *
 * All of these fields should be considered read-only, except for derived classes.
 */
struct _VteTerminalClass {
	/*< public > */
	/* Inherited parent class. */
	GtkWidgetClass parent_class;

	/*< protected > */
	/* Default signal handlers. */
	void (*eof)(VteTerminal* terminal);
	void (*child_exited)(VteTerminal* terminal);
	void (*emulation_changed)(VteTerminal* terminal);
	void (*encoding_changed)(VteTerminal* terminal);
	void (*char_size_changed)(VteTerminal* terminal, guint char_width, guint char_height);
	void (*window_title_changed)(VteTerminal* terminal);
	void (*icon_title_changed)(VteTerminal* terminal);
	void (*selection_changed)(VteTerminal* terminal);
	void (*contents_changed)(VteTerminal* terminal);
	void (*cursor_moved)(VteTerminal* terminal);
	void (*status_line_changed)(VteTerminal* terminal);
	void (*commit)(VteTerminal* terminal, const gchar *text, guint size);

	void (*deiconify_window)(VteTerminal* terminal);
	void (*iconify_window)(VteTerminal* terminal);
	void (*raise_window)(VteTerminal* terminal);
	void (*lower_window)(VteTerminal* terminal);
	void (*refresh_window)(VteTerminal* terminal);
	void (*restore_window)(VteTerminal* terminal);
	void (*maximize_window)(VteTerminal* terminal);
	void (*resize_window)(VteTerminal* terminal, guint width, guint height);
	void (*move_window)(VteTerminal* terminal, guint x, guint y);

	void (*increase_font_size)(VteTerminal* terminal);
	void (*decrease_font_size)(VteTerminal* terminal);

	void (*text_modified)(VteTerminal* terminal);
	void (*text_inserted)(VteTerminal* terminal);
	void (*text_deleted)(VteTerminal* terminal);
	void (*text_scrolled)(VteTerminal* terminal, gint delta);
	void (*copy_clipboard)(VteTerminal* terminal);
	void (*paste_clipboard)(VteTerminal* terminal);

	void (* set_scroll_adjustments) (GtkWidget *widget,
					 GtkAdjustment *hadjustment,
					 GtkAdjustment *vadjustment);

 	void (*beep)(VteTerminal* terminal);

	/* Padding for future expansion. */
	void (*vte_reserved3)(void);
	void (*vte_reserved4)(void);

	/*< private > */
	/* Signals we might emit. */
	guint eof_signal;
	guint child_exited_signal;
	guint emulation_changed_signal;
	guint encoding_changed_signal;
	guint char_size_changed_signal;
	guint window_title_changed_signal;
	guint icon_title_changed_signal;
	guint selection_changed_signal;
	guint contents_changed_signal;
	guint cursor_moved_signal;
	guint status_line_changed_signal;
	guint commit_signal;

	guint deiconify_window_signal;
	guint iconify_window_signal;
	guint raise_window_signal;
	guint lower_window_signal;
	guint refresh_window_signal;
	guint restore_window_signal;
	guint maximize_window_signal;
	guint resize_window_signal;
	guint move_window_signal;

	guint increase_font_size_signal;
	guint decrease_font_size_signal;

	guint text_modified_signal;
	guint text_inserted_signal;
	guint text_deleted_signal;
	guint text_scrolled_signal;

	guint reserved1;
	guint reserved2;
	guint reserved3;
	guint reserved4;
	guint reserved5;
	guint reserved6;
};

/**
 * VteTerminalEraseBinding:
 * @VTE_ERASE_AUTO: For backspace, attempt to determine the right value from the terminal's IO settings.  For delete, use the control sequence.
 * @VTE_ERASE_ASCII_BACKSPACE: Send an ASCII backspace character (0x08).
 * @VTE_ERASE_ASCII_DELETE: Send an ASCII delete character (0x7F).
 * @VTE_ERASE_DELETE_SEQUENCE: Send the "@@7" control sequence.
 * @VTE_ERASE_TTY: Send terminal's "erase" setting.
 *
 * An enumerated type which can be used to indicate which string the terminal
 * should send to an application when the user presses the Delete or Backspace
 * keys.
 */
typedef enum {
	VTE_ERASE_AUTO,
	VTE_ERASE_ASCII_BACKSPACE,
	VTE_ERASE_ASCII_DELETE,
	VTE_ERASE_DELETE_SEQUENCE,
	VTE_ERASE_TTY
} VteTerminalEraseBinding;

/**
 * VteTerminalCursorBlinkMode:
 * @VTE_CURSOR_BLINK_SYSTEM: Follow GTK+ settings for cursor blinking.
 * @VTE_CURSOR_BLINK_ON: Cursor blinks.
 * @VTE_CURSOR_BLINK_OFF: Cursor does not blink.
 *
 * An enumerated type which can be used to indicate the cursor blink mode
 * for the terminal.
 */
typedef enum {
        VTE_CURSOR_BLINK_SYSTEM,
        VTE_CURSOR_BLINK_ON,
        VTE_CURSOR_BLINK_OFF
} VteTerminalCursorBlinkMode;

/**
 * VteTerminalCursorShape:
 * @VTE_CURSOR_SHAPE_BLOCK: Draw a block cursor.  This is the default.
 * @VTE_CURSOR_SHAPE_IBEAM: Draw a vertical bar on the left side of character.
 * This is similar to the default cursor for other GTK+ widgets.
 * @VTE_CURSOR_SHAPE_UNDERLINE: Draw a horizontal bar below the character.
 *
 * An enumerated type which can be used to indicate what should the terminal
 * draw at the cursor position.
 */
typedef enum {
        VTE_CURSOR_SHAPE_BLOCK,
        VTE_CURSOR_SHAPE_IBEAM,
        VTE_CURSOR_SHAPE_UNDERLINE
} VteTerminalCursorShape;

/* The structure we return as the supplemental attributes for strings. */
struct _VteCharAttributes {
        /*< private >*/
	long row, column;
	GdkColor fore, back;
	guint underline:1, strikethrough:1;
};
typedef struct _VteCharAttributes VteCharAttributes;

/* The name of the same structure in the 0.10 series, for API compatibility. */
struct vte_char_attributes {
        /*< private >*/
	long row, column;
	GdkColor fore, back;
	guint underline:1, strikethrough:1;
};

typedef gboolean (*VteSelectionFunc)(VteTerminal *terminal,
                                     glong column,
                                     glong row,
                                     gpointer data);

/* The widget's type. */
GType vte_terminal_get_type(void);

#define VTE_TYPE_TERMINAL		(vte_terminal_get_type())
#define VTE_TERMINAL(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj),\
							VTE_TYPE_TERMINAL,\
							VteTerminal))
#define VTE_TERMINAL_CLASS(klass)	G_TYPE_CHECK_CLASS_CAST((klass),\
							     VTE_TYPE_TERMINAL,\
							     VteTerminalClass)
#define VTE_IS_TERMINAL(obj)		G_TYPE_CHECK_INSTANCE_TYPE((obj),\
						       VTE_TYPE_TERMINAL)
#define VTE_IS_TERMINAL_CLASS(klass)	G_TYPE_CHECK_CLASS_TYPE((klass),\
							     VTE_TYPE_TERMINAL)
#define VTE_TERMINAL_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS ((obj), VTE_TYPE_TERMINAL, VteTerminalClass))

/* You can get by with just these two functions. */
GtkWidget *vte_terminal_new(void);
pid_t vte_terminal_fork_command(VteTerminal *terminal,
				const char *command, char **argv,
				char **envv, const char *directory,
				gboolean lastlog,
				gboolean utmp,
				gboolean wtmp);

/* Users of libzvt may find this useful. */
pid_t vte_terminal_forkpty(VteTerminal *terminal,
			   char **envv, const char *directory,
			   gboolean lastlog,
			   gboolean utmp,
			   gboolean wtmp);

/* Send data to the terminal to display, or to the terminal's forked command
 * to handle in some way.  If it's 'cat', they should be the same. */
void vte_terminal_feed(VteTerminal *terminal, const char *data, glong length);
void vte_terminal_feed_child(VteTerminal *terminal, const char *text, glong length);
void vte_terminal_feed_child_binary(VteTerminal *terminal, const char *data, glong length);

/* Copy currently-selected text to the clipboard, or from the clipboard to
 * the terminal. */
void vte_terminal_copy_clipboard(VteTerminal *terminal);
void vte_terminal_paste_clipboard(VteTerminal *terminal);
void vte_terminal_copy_primary(VteTerminal *terminal);
void vte_terminal_paste_primary(VteTerminal *terminal);

/* simple manipulation of selection */
void vte_terminal_select_all(VteTerminal *terminal);
void vte_terminal_select_none(VteTerminal *terminal);

/* Set the terminal's size. */
void vte_terminal_set_size(VteTerminal *terminal,
			   glong columns, glong rows);

/* Set various on-off settings. */
void vte_terminal_set_audible_bell(VteTerminal *terminal, gboolean is_audible);
gboolean vte_terminal_get_audible_bell(VteTerminal *terminal);
void vte_terminal_set_visible_bell(VteTerminal *terminal, gboolean is_visible);
gboolean vte_terminal_get_visible_bell(VteTerminal *terminal);
void vte_terminal_set_scroll_background(VteTerminal *terminal, gboolean scroll);
void vte_terminal_set_scroll_on_output(VteTerminal *terminal, gboolean scroll);
void vte_terminal_set_scroll_on_keystroke(VteTerminal *terminal,
					  gboolean scroll);

/* Set the color scheme. */
void vte_terminal_set_color_dim(VteTerminal *terminal,
				const GdkColor *dim);
void vte_terminal_set_color_bold(VteTerminal *terminal,
				 const GdkColor *bold);
void vte_terminal_set_color_foreground(VteTerminal *terminal,
				       const GdkColor *foreground);
void vte_terminal_set_color_background(VteTerminal *terminal,
				       const GdkColor *background);
void vte_terminal_set_color_cursor(VteTerminal *terminal,
				   const GdkColor *cursor_background);
void vte_terminal_set_color_highlight(VteTerminal *terminal,
				      const GdkColor *highlight_background);
void vte_terminal_set_colors(VteTerminal *terminal,
			     const GdkColor *foreground,
			     const GdkColor *background,
			     const GdkColor *palette,
			     glong palette_size);
void vte_terminal_set_default_colors(VteTerminal *terminal);

/* Background effects. */
void vte_terminal_set_background_image(VteTerminal *terminal, GdkPixbuf *image);
void vte_terminal_set_background_image_file(VteTerminal *terminal,
					    const char *path);
void vte_terminal_set_background_tint_color(VteTerminal *terminal,
					    const GdkColor *color);
void vte_terminal_set_background_saturation(VteTerminal *terminal,
					    double saturation);
void vte_terminal_set_background_transparent(VteTerminal *terminal,
					     gboolean transparent);
void vte_terminal_set_opacity(VteTerminal *terminal, guint16 opacity);

/* Set whether or not the cursor blinks. */
void vte_terminal_set_cursor_blink_mode(VteTerminal *terminal,
					VteTerminalCursorBlinkMode mode);
VteTerminalCursorBlinkMode vte_terminal_get_cursor_blink_mode(VteTerminal *terminal);

/* Set cursor shape */
void vte_terminal_set_cursor_shape(VteTerminal *terminal,
				   VteTerminalCursorShape shape);
VteTerminalCursorShape vte_terminal_get_cursor_shape(VteTerminal *terminal);

/* Set the number of scrollback lines, above or at an internal minimum. */
void vte_terminal_set_scrollback_lines(VteTerminal *terminal, glong lines);

/* Append the input method menu items to a given shell. */
void vte_terminal_im_append_menuitems(VteTerminal *terminal,
				      GtkMenuShell *menushell);

/* Set or retrieve the current font. */
void vte_terminal_set_font(VteTerminal *terminal,
			   const PangoFontDescription *font_desc);
void vte_terminal_set_font_from_string(VteTerminal *terminal, const char *name);
const PangoFontDescription *vte_terminal_get_font(VteTerminal *terminal);
void vte_terminal_set_allow_bold(VteTerminal *terminal, gboolean allow_bold);
gboolean vte_terminal_get_allow_bold(VteTerminal *terminal);

/* Check if the terminal is the current selection owner. */
gboolean vte_terminal_get_has_selection(VteTerminal *terminal);

/* Set the list of word chars, optionally using hyphens to specify ranges
 * (to get a hyphen, place it first), and check if a character is in the
 * range. */
void vte_terminal_set_word_chars(VteTerminal *terminal, const char *spec);
gboolean vte_terminal_is_word_char(VteTerminal *terminal, gunichar c);

/* Set what happens when the user strikes backspace or delete. */
void vte_terminal_set_backspace_binding(VteTerminal *terminal,
					VteTerminalEraseBinding binding);
void vte_terminal_set_delete_binding(VteTerminal *terminal,
				     VteTerminalEraseBinding binding);

/* Manipulate the autohide setting. */
void vte_terminal_set_mouse_autohide(VteTerminal *terminal, gboolean setting);
gboolean vte_terminal_get_mouse_autohide(VteTerminal *terminal);

/* Reset the terminal, optionally clearing the tab stops and line history. */
void vte_terminal_reset(VteTerminal *terminal, gboolean full,
			gboolean clear_history);

/* Read the contents of the terminal, using a callback function to determine
 * if a particular location on the screen (0-based) is interesting enough to
 * include.  Each byte in the returned string will have a corresponding
 * VteCharAttributes structure in the passed GArray, if the array was not %NULL.
 * Note that it will have one entry per byte, not per character, so indexes
 * should match up exactly. */
char *vte_terminal_get_text(VteTerminal *terminal,
			    VteSelectionFunc is_selected,
			    gpointer data,
			    GArray *attributes);
char *vte_terminal_get_text_include_trailing_spaces(VteTerminal *terminal,
						    VteSelectionFunc is_selected,
						    gpointer data,
						    GArray *attributes);
char *vte_terminal_get_text_range(VteTerminal *terminal,
				  glong start_row, glong start_col,
				  glong end_row, glong end_col,
				  VteSelectionFunc is_selected,
				  gpointer data,
				  GArray *attributes);
void vte_terminal_get_cursor_position(VteTerminal *terminal,
				      glong *column, glong *row);
/* Display string matching:  clear all matching expressions. */
void vte_terminal_match_clear_all(VteTerminal *terminal);

/* Add a matching expression, returning the tag the widget assigns to that
 * expression. */
int vte_terminal_match_add_gregex(VteTerminal *terminal, GRegex *regex, GRegexMatchFlags flags);
/* Set the cursor to be used when the pointer is over a given match. */
void vte_terminal_match_set_cursor(VteTerminal *terminal, int tag,
				   GdkCursor *cursor);
void vte_terminal_match_set_cursor_type(VteTerminal *terminal,
					int tag, GdkCursorType cursor_type);
void vte_terminal_match_set_cursor_name(VteTerminal *terminal,
					int tag, const char *cursor_name);
/* Remove a matching expression by tag. */
void vte_terminal_match_remove(VteTerminal *terminal, int tag);

/* Check if a given cell on the screen contains part of a matched string.  If
 * it does, return the string, and store the match tag in the optional tag
 * argument. */
char *vte_terminal_match_check(VteTerminal *terminal,
			       glong column, glong row,
			       int *tag);

/* Set the emulation type.  Most of the time you won't need this. */
void vte_terminal_set_emulation(VteTerminal *terminal, const char *emulation);
const char *vte_terminal_get_emulation(VteTerminal *terminal);
const char *vte_terminal_get_default_emulation(VteTerminal *terminal);

/* Set the character encoding.  Most of the time you won't need this. */
void vte_terminal_set_encoding(VteTerminal *terminal, const char *codeset);
const char *vte_terminal_get_encoding(VteTerminal *terminal);

/* Get the contents of the status line. */
const char *vte_terminal_get_status_line(VteTerminal *terminal);

#ifndef VTE_DISABLE_DEPRECATED
/* Get the padding the widget is using. */
void vte_terminal_get_padding(VteTerminal *terminal, int *xpad, int *ypad) G_GNUC_DEPRECATED;
#endif

/* Attach an existing PTY master side to the terminal widget.  Use
 * instead of vte_terminal_fork_command(). */
void vte_terminal_set_pty(VteTerminal *terminal, int pty_master);
int vte_terminal_get_pty(VteTerminal *terminal);

/* Accessors for bindings. */
GtkAdjustment *vte_terminal_get_adjustment(VteTerminal *terminal);
glong vte_terminal_get_char_width(VteTerminal *terminal);
glong vte_terminal_get_char_height(VteTerminal *terminal);
glong vte_terminal_get_row_count(VteTerminal *terminal);
glong vte_terminal_get_column_count(VteTerminal *terminal);
const char *vte_terminal_get_window_title(VteTerminal *terminal);
const char *vte_terminal_get_icon_title(VteTerminal *terminal);

int vte_terminal_get_child_exit_status(VteTerminal *terminal);


/* Writing contents out */

/**
 * VteTerminalWriteFlags:
 * @VTE_TERMINAL_WRITE_DEFAULT: Write contents as UTF-8 text.  This is the default.
 *
 * A flag type to determine how terminal contents should be written
 * to an output stream.
 */
typedef enum {
  VTE_TERMINAL_WRITE_DEFAULT = 0
} VteTerminalWriteFlags;

gboolean vte_terminal_write_contents (VteTerminal *terminal,
				      GOutputStream *stream,
				      VteTerminalWriteFlags flags,
				      GCancellable *cancellable,
				      GError **error);


#ifndef VTE_DISABLE_DEPRECATED

/**
 * VTE_IS_TERMINAL_ERASE_BINDING:
 *
 * Does nothing.
 *
 * Returns: %FALSE
 *
 * @Deprecated: 0.20
 */
#define VTE_IS_TERMINAL_ERASE_BINDING(obj)  (FALSE)

/**
 * VTE_IS_TERMINAL_ANTI_ALIAS:
 *
 * Does nothing.
 *
 * Returns: %FALSE
 *
 * @Deprecated: 0.20
 */
#define VTE_IS_TERMINAL_ANTI_ALIAS(obj)     (FALSE)

/**
 * VteTerminalAntiAlias:
 * @VTE_ANTI_ALIAS_USE_DEFAULT: Use the system default anti-alias setting
 * @VTE_ANTI_ALIAS_FORCE_ENABLE: Force enable anti-aliasing
 * @VTE_ANTI_ALIAS_FORCE_DISABLE: Force disable anti-aliasing
 *
 * An enumeration describing which anti-alias setting to use.
 *
 * @Deprecated: 0.20
 */
typedef enum {
	VTE_ANTI_ALIAS_USE_DEFAULT,
	VTE_ANTI_ALIAS_FORCE_ENABLE,
	VTE_ANTI_ALIAS_FORCE_DISABLE
} VteTerminalAntiAlias;

void vte_terminal_set_cursor_blinks(VteTerminal *terminal,
				    gboolean blink) G_GNUC_DEPRECATED;
gboolean vte_terminal_get_using_xft(VteTerminal *terminal) G_GNUC_DEPRECATED;
int vte_terminal_match_add(VteTerminal *terminal, const char *match) G_GNUC_DEPRECATED;
glong vte_terminal_get_char_descent(VteTerminal *terminal) G_GNUC_DEPRECATED;
glong vte_terminal_get_char_ascent(VteTerminal *terminal) G_GNUC_DEPRECATED;
void vte_terminal_set_font_full(VteTerminal *terminal,
				const PangoFontDescription *font_desc,
				VteTerminalAntiAlias antialias) G_GNUC_DEPRECATED;
void vte_terminal_set_font_from_string_full(VteTerminal *terminal,
					    const char *name,
					    VteTerminalAntiAlias antialias) G_GNUC_DEPRECATED;

#endif /* VTE_DISABLE_DEPRECATED */

G_END_DECLS

#endif
