mc/gnome/gmain.c

/*
 * Midnight Commander -- GNOME frontend
 *
 * Copyright (C) 1997, 1998 The Free Software Foundation
 *
 * Author: Miguel de Icaza (miguel@gnu.org)
 *
 */

#include <config.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#define WANT_WIDGETS
#include "tty.h"		/* for KEY_BACKSPACE */
#include "x.h"
#include "main.h"
#include "key.h"
#include "global.h"
#include "dir.h"
#include "panel.h"
#include "gscreen.h"
#include "command.h"
#include "cmd.h"
#include "gdesktop.h"

GdkColorContext *mc_cc;

#define MAX_COLOR_PAIRS 32
struct gmc_color_pairs_s gmc_color_pairs [MAX_COLOR_PAIRS];

char *default_edition_colors =
"normal=black:"
"selected=white,darkblue:"
"viewunderline=brightred,blue:"
"directory=blue:"
"markselect=yellow,darkblue:"
"marked=yellow,seagreen:"
"execute=slateblue:"
"link=green:"
"device=magenta:"
"core=red:"
"menuhotsel=cyan,black:"
"errors=white,red:"
"reverse=black,lightcyan:"
"special=black";

int dialog_panel_callback (struct Dlg_head *h, int id, int msg);

/* The Dlg_head for the whole desktop */
Dlg_head *desktop_dlg;

/* This is only used by the editor, so we provide a dummy implementation */
void
try_alloc_color_pair (char *str, char *str2)
{
}

void
init_pair (int index, GdkColor *fore, GdkColor *back)
{
	if (index < 0 || index > MAX_COLOR_PAIRS){
		printf ("init_pair called with invalid index\n");
		exit (1);
	}
	gmc_color_pairs [index].fore = fore;
	gmc_color_pairs [index].back = back;
}

void
get_color (char *cpp, GdkColor **colp)
{
	GdkColor *new_color;
	gint     status;

	new_color = g_new (GdkColor, 1);
	gdk_color_parse (cpp, new_color);
	new_color->pixel = 0;
	status = 0;
	gdk_color_context_get_pixels (mc_cc, &new_color->red, &new_color->green, &new_color->blue, 1,
				      &new_color->pixel, &status);
	*colp = new_color;
}

static void
gmc_color_init (void)
{
	mc_cc = gdk_color_context_new (gtk_widget_get_default_visual (),
				       gtk_widget_get_default_colormap ());
}

int
xtoolkit_init (int *argc, char *argv [])
{
	LINES = 40;
	COLS = 80;

	printf (
		"The GNOME file manager is going trough a massive code\n"
		"rewrite, so many problems are known to exist due to a major\n"
		"code design shift.\n\n"
		"Yes, we know there are lots of problems in the current code\n"
		"so dont even report them, when the major design has finished\n"
		"I will remove this notice\n");

	gmc_color_init ();

	return 0;
}

int
xtoolkit_end (void)
{
	return 1;
}

/*
 * Keystroke event handler for all of the Gtk widgets created by
 * the GNOME Midnight Commander.  A special case is handled at
 * the top
 */
int
dialog_key_pressed (GtkWidget *win, GdkEventKey *event, Dlg_head *h)
{
	GtkWidget *w;
	static int on_escape;
	int key;

	/*
	 * Find out if the focused widget is an IconList and
	 * if so, check if it has a currently focused item is
	 * on editing mode as we do not want to handle key
	 * events while the icon name is being edited.
	 */
	w = win;
	while (w && (GTK_IS_CONTAINER (w) && !GNOME_IS_ICON_LIST (w)))
		w = GTK_CONTAINER (w)->focus_child;
	
	if (w && GNOME_IS_ICON_LIST (w)){
		GnomeCanvas *c = GNOME_CANVAS (w);

		if (GNOME_IS_ICON_TEXT_ITEM (c->focused_item)){
			GnomeIconTextItem *i = GNOME_ICON_TEXT_ITEM (c->focused_item);

			if (i->editing)
				return FALSE;
		}
	} 

	key = translate_gdk_keysym_to_curses (event);
	if (key == -1)
		return FALSE;

	if (!on_escape){
		if (key == 27){
			on_escape = 1;
			gtk_signal_emit_stop_by_name (GTK_OBJECT (win), "key_press_event");
			return TRUE;
		}
	} else {
		if (key  != 27){
			if (key >= '0' && key <= '9')
				key = KEY_F(key - '0');
			else
				key = ALT (key);

			if (key == ALT('<'))
				key = KEY_HOME;
			if (key == ALT('>'))
				key = KEY_END;
		}
		on_escape = 0;
	}
	
	if (dlg_key_event (h, key)){
		gtk_signal_emit_stop_by_name (GTK_OBJECT (win), "key_press_event");
		return TRUE;
	} else
		return FALSE;
}

void
bind_gtk_keys (GtkWidget *w, Dlg_head *h)
{
	gtk_signal_connect (GTK_OBJECT (w),
			    "key_press_event",
			    GTK_SIGNAL_FUNC (dialog_key_pressed),
			    h);
}

widget_data
xtoolkit_create_dialog (Dlg_head *h, int flags)
{
	GtkWidget *win, *ted;

	if (!(flags & DLG_NO_TOPLEVEL)){
		if (flags & DLG_GNOME_APP)
			win = gnome_app_new ("mc", h->name);
		else {
			win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
			gtk_window_position (GTK_WINDOW (win), GTK_WIN_POS_MOUSE);
		}
	} else
		win = 0;
	
	h->grided = flags;
	h->idle_fn_tag = -1;
	if (!(flags & DLG_NO_TED)){
		ted = gtk_ted_new_layout (h->name, LIBDIR "/layout");
		gtk_container_add (GTK_CONTAINER (win), ted);
		gtk_widget_show (ted);
		
		bind_gtk_keys (GTK_WIDGET (ted), h);
	}
	if (win){
		bind_gtk_keys (GTK_WIDGET (win), h);
	}
	return (widget_data) win;
}

/* Used to bind a window for an already created Dlg_head.  This is
 * used together with the DLG_NO_TOPLEVEL: the dialog is created
 * with the DLG_NO_TOPLEVEL and later, when the window is created
 * it is assigned with this routine
 */
void
x_dlg_set_window (Dlg_head *h, GtkWidget *win)
{
	h->wdata = (widget_data) win;
	bind_gtk_keys (GTK_WIDGET (win), h);	
}

void
x_set_dialog_title (Dlg_head *h, char *title)
{
	gtk_window_set_title (GTK_WINDOW (h->wdata), title);
}

widget_data
xtoolkit_get_main_dialog (Dlg_head *h)
{
	GtkWidget *win;

	win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	return (widget_data) win; 
}

/* Creates the containers */
widget_data
x_create_panel_container (int which)
{
	GtkWidget *win;

	win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	return (widget_data) 0;
}

void
x_panel_container_show (widget_data wdata)
{
	gtk_widget_show (GTK_WIDGET (wdata));
}

void
x_add_widget (Dlg_head *h, Widget_Item *w)
{
	if (!(h->grided & DLG_NO_TED)){
		GtkTed *ted = GTK_TED (GTK_BIN (h->wdata)->child);

		gtk_ted_add (ted, GTK_WIDGET (w->widget->wdata), w->widget->tkname);
		bind_gtk_keys (GTK_WIDGET (w->widget->wdata), h);
	}
}

static int
gnome_dlg_send_destroy (GtkWidget *widget, GdkEvent *event, Dlg_head *h)
{
	gtk_widget_hide (GTK_WIDGET (h->wdata));
	h->ret_value = B_CANCEL;
	dlg_stop (h);
	return TRUE;
}

void
x_init_dlg (Dlg_head *h)
{
	if (!(h->grided & DLG_NO_TED)){
		GtkTed *ted = GTK_TED (GTK_BIN (h->wdata)->child);
		Widget_Item *p, *first;
	
		first = p = h->current;
		do {
			gtk_ted_add (ted, GTK_WIDGET (p->widget->wdata), p->widget->tkname);
			bind_gtk_keys (GTK_WIDGET (p->widget->wdata), h);
			p = p->next;
		} while (p != first);
		gtk_ted_prepare (ted);
		
		if (!ted->need_gui){
			gtk_grab_add (GTK_WIDGET (ted));
			gtk_window_set_policy (GTK_WINDOW (h->wdata), 0, 0, 0);
		}
		gtk_widget_show (GTK_WIDGET (h->wdata));
	}
	gtk_signal_connect (GTK_OBJECT (h->wdata), "delete_event",
			    GTK_SIGNAL_FUNC (gnome_dlg_send_destroy), h);
	x_focus_widget (h->current);
}

/*
 * This function is invoked when the dialog is started to be
 * destroyed, before any widgets have been destroyed.
 *
 * We only hide the toplevel Gtk widget to avoid the flickering
 * of the destruction process
 */
void
x_destroy_dlg_start (Dlg_head *h)
{
	gtk_widget_hide (GTK_WIDGET (h->wdata));
}

/*
 * Called when the Dlg_head has been destroyed.  This only cleans
 * up/releases the frontend resources
 */
void
x_destroy_dlg (Dlg_head *h)
{
	if (!(h->grided & DLG_NO_TED))
		gtk_grab_remove (GTK_WIDGET (GTK_BIN (h->wdata)->child));
	if (h->wdata){
		gtk_widget_destroy (GTK_WIDGET(h->wdata));
		h->wdata = 0;
	}
}

void
gtkrundlg_event (Dlg_head *h)
{
	gtk_main ();
}

void
edition_pre_exec ()
{
}

void
edition_post_exec ()
{
}

void
done_screen ()
{
}

void
setup_sigwinch ()
{
}

void
x_flush_events (void)
{
	while (gtk_events_pending ())
		gtk_main_iteration ();
}

static int
gnome_idle_handler (gpointer data)
{
	Dlg_head *h = data;

	if (h->send_idle_msg){
		(*h->callback)(h, 0, DLG_IDLE);
		return TRUE;
	} else
		return FALSE;
}

/* Turn on and off the idle message sending */
void
x_set_idle (Dlg_head *h, int enable_idle)
{
	if (enable_idle){
		if (h->idle_fn_tag != -1)
			return;
		h->idle_fn_tag = gtk_idle_add (gnome_idle_handler, h);
	} else {
		if (h->idle_fn_tag == -1)
			return;
		gtk_idle_remove (h->idle_fn_tag);
		h->idle_fn_tag = -1;
		gnome_idle_handler (h);
	}
}

int
dialog_panel_callback (struct Dlg_head *h, int id, int msg)
{
	WPanel *p;
	WInput *in;
	Widget_Item *dh;
	void *current_widget;	/* The current widget */
	
	if (msg == DLG_KEY && id == '\n'){
		current_widget = (void *) h->current->widget;

		if (is_a_panel (current_widget))
			return 0;

		dh = h->current;
		do {
			if (is_a_panel (dh->widget)){
				WPanel *p = (WPanel *) dh->widget;

				if (current_widget == p->filter_w){
					in = (WInput *) current_widget;
					set_panel_filter_to (p, strdup (in->buffer));
					return MSG_HANDLED;
				}
			
				if (current_widget == p->current_dir){
					WInput *in = p->current_dir;
			
					do_panel_cd (p, in->buffer, cd_parse_command);
					assign_text (in, p->cwd);
					update_input (in, 1);
			
					return MSG_HANDLED;
				}
			}
			dh = dh->next;
		} while (dh != h->current);
	}

	if (msg == DLG_UNHANDLED_KEY || msg == DLG_HOTKEY_HANDLED)
		return midnight_callback (h, id, msg);

	return 0;
}

extern GList *directory_list;
extern GList *geometry_list;

typedef struct {
	char *dir; char *geometry;
} dir_and_geometry;

static int
idle_create_panel (void *data)
{
	dir_and_geometry *dg = data;

	new_panel_with_geometry_at (dg->dir, dg->geometry);
	g_free (data);

	return 0;
}

static int
idle_destroy_window (void *data)
{
	WPanel *panel = data;

	gnome_close_panel (GTK_WIDGET (panel->widget.wdata), panel);
	return 0;
}

/*
 * wrapper for new_panel_with_geometry_at.
 * first invocation is called directly, further calls use
 * the idle handler
 */
static WPanel *
create_one_panel (char *dir, char *geometry)
{
	static int first = 1;
	
	if (first){
		first = 0;
		return new_panel_with_geometry_at (dir, geometry);
	} else {
		dir_and_geometry *dg = g_new (dir_and_geometry, 1);
		dg->dir = dir;
		dg->geometry = geometry;
		gtk_idle_add (idle_create_panel, dg);
		return NULL;
	}
}

/*
 * Only at startup we have a strange condition: if more than one
 * panel is created, then the code hangs inside X, it keeps waiting
 * for a reply for something in Imlib that never returns.
 *
 * Creating the panels on the idle loop takes care of this
 */
void
create_panels (void)
{
	GList *p, *g;
	char  *geo;
	WPanel *panel;

	start_desktop ();
	cmdline = command_new (0, 0, 0);
	the_hint = label_new (0, 0, 0, NULL);

	gnome_init_panels ();
	
	desktop_dlg = create_dlg (0, 0, 24, 80, 0, dialog_panel_callback, "[panel]", "midnight", DLG_NO_TED);

	if (directory_list){
		g   = geometry_list;
		for (p = directory_list; p; p = p->next){
			if (g){
				geo = g->data;
				g = g->next;
			} else
				geo = NULL;
			create_one_panel (p->data, geo);
		}
		panel = NULL;
	} else {
		char *geometry = geometry_list ? geometry_list->data : NULL;
		panel = create_one_panel (".", geometry);

		if (nowindows){
			gtk_idle_add (idle_destroy_window, panel);
			panel->widget.options |= W_PANEL_HIDDEN;
		}
	}
	g_list_free (directory_list);
	g_list_free (geometry_list);

	run_dlg (desktop_dlg);

	/* shutdown gnome specific bits of midnight commander */
	stop_desktop ();
}

static void
session_die (void)
{
	extern int quit;
	
	/* FIXME: This wont get us out from a dialog box */
	gtk_main_quit ();
	quit = 1;
	dlg_stop (desktop_dlg);
}

/*
 * Save the session callback
 */
static int
session_save_state (GnomeClient *client, gint phase, GnomeRestartStyle save_style, gint shutdown,
		    GnomeInteractStyle  interact_style, gint fast, gpointer client_data)
{
	char *sess_id;
	char **argv = g_malloc (sizeof (char *) * ((g_list_length (containers) * 3) + 2));
	GList *l, *free_list = 0;
	int   i;

	sess_id = gnome_client_get_id (client);
	
	argv [0] = client_data;
	for (i = 1, l = containers; l; l = l->next){
		PanelContainer *pc = l->data;
		int x, y, w, h;
		char *buffer = g_malloc (32);

		gdk_window_get_origin (GTK_WIDGET (pc->panel->widget.wdata)->window, &x, &y);
		gdk_window_get_size   (GTK_WIDGET (pc->panel->widget.wdata)->window, &w, &h);
		sprintf (buffer, "%dx%d+%d+%d", w, h, x, y);
		argv [i++] = pc->panel->cwd;
		argv [i++] = "--geometry";
		argv [i++] = buffer;
		free_list = g_list_append (free_list, buffer);
	}

	/* If no windows were open */
	if (i == 1){
		argv [i++] = "--nowindows";
	}

	argv [i] = NULL;
	gnome_client_set_clone_command (client, i, argv);
	gnome_client_set_restart_command (client, i, argv);

	for (l = free_list; l; l = l->next)
		g_free (l->data);
	g_list_free (free_list);

	g_free (argv);

	if (shutdown){
		quit = 1;
		dlg_stop (midnight_dlg);
	}
	return 1;
}

void
session_management_setup (char *name)
{
	GnomeClient *client;
	
	client = gnome_master_client ();
	if (client){
		gtk_signal_connect (GTK_OBJECT (client), "save_yourself",
				    GTK_SIGNAL_FUNC (session_save_state), name);
		gtk_signal_connect (GTK_OBJECT (client), "die",
				    GTK_SIGNAL_FUNC (session_die), NULL);
	}
}