/******************************************************************************/
/*  From XMMS - Cross-platform multimedia player
 *
 *  dirbrowser.c - playlist's directory browser window
 *
 *  Copyright (C) 1998-2000  Peter Alm, Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
 *                           modified by Pascal Cannenterre <pascal_cannenterre@sdesigns.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
/******************************************************************************/
#include "define.h"
#include <dirent.h>
#include "dirbrowser.h"
#include "../pixmaps/folder.xpm"
#include "../pixmaps/ofolder.xpm"

static GdkPixmap *folder_pixmap = NULL, *ofolder_pixmap;
static GdkBitmap *folder_mask, *ofolder_mask;

static gboolean check_for_subdir(gchar * path)
{
	DIR *dir;
	struct dirent *dirent;
	struct stat statbuf;
	gchar *npath;

	if ((dir = opendir(path)) != NULL)
	{
		while ((dirent = readdir(dir)) != NULL)
		{
			if (dirent->d_name[0] != '.')
			{
				npath = g_strconcat(path, dirent->d_name, NULL);
				if (stat(npath, &statbuf) != -1 && S_ISDIR(statbuf.st_mode))
				{
					g_free(npath);
					closedir(dir);
					return TRUE;
				}
				g_free(npath);
			}
		}
		closedir(dir);
	}
	return FALSE;
}

static void destroy_cb(gpointer data)
{
	DirNode *node = data;

	g_free(node->path);
	g_free(node);
}

static void expand_cb(GtkWidget * widget, GtkCTreeNode * parent_node)
{
	DIR *dir;
	struct dirent *dirent;
	gchar *path, *text, *dummy = "dummy";
	struct stat statbuf;
	GtkCTreeNode *node, *sub_node;
	DirNode *parent_dirnode, *dirnode;
	gboolean has_subdir = FALSE;

	parent_dirnode = gtk_ctree_node_get_row_data(GTK_CTREE(widget), parent_node);
	if (!parent_dirnode->scanned)
	{
		gtk_clist_freeze(GTK_CLIST(widget));
		node = gtk_ctree_find_by_row_data(GTK_CTREE(widget), parent_node, NULL);
		gtk_ctree_remove_node(GTK_CTREE(widget), node);
		if ((dir = opendir(parent_dirnode->path)) != NULL)
		{
			while ((dirent = readdir(dir)) != NULL)
			{
				path = g_strconcat(parent_dirnode->path, dirent->d_name, NULL);
				if (stat(path, &statbuf) != -1 && S_ISDIR(statbuf.st_mode) && dirent->d_name[0] != '.')
				{
					dirnode = g_malloc0(sizeof (DirNode));
					dirnode->path = g_strconcat(path, "/", NULL);
					text = dirent->d_name;
					if (check_for_subdir(dirnode->path))
						has_subdir = TRUE;
					else
						has_subdir = FALSE;
					node = gtk_ctree_insert_node(GTK_CTREE(widget), parent_node, NULL, &text, 4, folder_pixmap, folder_mask, ofolder_pixmap, ofolder_mask, !has_subdir, FALSE);
					gtk_ctree_node_set_row_data_full(GTK_CTREE(widget), node, dirnode, destroy_cb);
					if (has_subdir)
						sub_node = gtk_ctree_insert_node(GTK_CTREE(widget), node, NULL, &dummy, 4, NULL, NULL, NULL, NULL, FALSE, FALSE);
				}
				g_free(path);
			}
			closedir(dir);
			gtk_ctree_sort_node(GTK_CTREE(widget), parent_node);
		}
		gtk_clist_thaw(GTK_CLIST(widget));
		parent_dirnode->scanned = TRUE;
	}
}

static void select_row_cb(GtkWidget * widget, gint row, gint column, GdkEventButton * bevent, gpointer data)
{
	DirNode *dirnode;
	GtkCTreeNode *node;
	void (*handler) (gchar *);

	if (bevent)
	{
		if (bevent->type == GDK_2BUTTON_PRESS)
		{
			node = gtk_ctree_node_nth(GTK_CTREE(widget), row);
			dirnode = gtk_ctree_node_get_row_data(GTK_CTREE(widget), node);
			handler = (void (*)(gchar *)) gtk_object_get_user_data(GTK_OBJECT(widget));
			if (handler)
				handler(dirnode->path);
		}
	}

}

void ok_clicked(GtkWidget * widget, GtkWidget * tree)
{
	GtkCTreeNode *node;
	DirNode *dirnode;
	GList *list_node;
	GtkWidget *window;
	void (*handler) (gchar *);

	window = gtk_object_get_user_data(GTK_OBJECT(widget));
	gtk_widget_hide(window);
	list_node = GTK_CLIST(tree)->selection;
	while (list_node)
	{
		node = list_node->data;
		dirnode = gtk_ctree_node_get_row_data(GTK_CTREE(tree), node);
		handler = (void (*)(gchar *)) gtk_object_get_user_data(GTK_OBJECT(tree));
		if (handler)
			handler(dirnode->path);
		list_node = g_list_next(list_node);
	}
	gtk_widget_destroy(window);

}

int filetreeent_compare_func(const void *a, const void *b)
{
	if (!a || !b || !((DirNode *) a)->path)
		return -1;
	return strcmp(((DirNode *) a)->path, (gchar *) b);
}

GtkWidget *create_dir_browser(gchar * title, gchar * current_path, GtkSelectionMode mode, void (*handler) (gchar *))
{
	GtkWidget *window, *scroll_win, *tree, *vbox, *bbox, *ok, *cancel,
	         *sep;
	gchar *root_text = "/", *node_text = "dummy";
	gchar *currentdir, *pos, *tpath, *tpathnew;
	GtkCTreeNode *root_node, *node, *nextnode;
	DirNode *dirnode;
	gboolean leaf;

	window = gtk_window_new(GTK_WINDOW_DIALOG);
	gtk_window_set_title(GTK_WINDOW(window), title);
	gtk_container_border_width(GTK_CONTAINER(window), 10);

	vbox = gtk_vbox_new(FALSE, 10);
	gtk_container_add(GTK_CONTAINER(window), vbox);

	scroll_win = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll_win), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
	gtk_widget_set_usize(scroll_win, 250, 200);
	gtk_box_pack_start(GTK_BOX(vbox), scroll_win, TRUE, TRUE, 0);
	gtk_widget_show(scroll_win);

	gtk_widget_realize(window);
	if (!folder_pixmap)
	{
		folder_pixmap = gdk_pixmap_create_from_xpm_d(window->window, &folder_mask, NULL, folder);
		ofolder_pixmap = gdk_pixmap_create_from_xpm_d(window->window, &ofolder_mask, NULL, ofolder);
	}

	tree = gtk_ctree_new(1, 0);
	gtk_clist_set_column_auto_resize(GTK_CLIST(tree), 0, TRUE);
	gtk_clist_set_selection_mode(GTK_CLIST(tree), mode);
	gtk_ctree_set_line_style(GTK_CTREE(tree), GTK_CTREE_LINES_DOTTED);
	gtk_signal_connect(GTK_OBJECT(tree), "tree_expand", GTK_SIGNAL_FUNC(expand_cb), NULL);
	gtk_signal_connect(GTK_OBJECT(tree), "select_row", GTK_SIGNAL_FUNC(select_row_cb), NULL);
	gtk_container_add(GTK_CONTAINER(scroll_win), tree);
	gtk_object_set_user_data(GTK_OBJECT(tree), (gpointer) handler);

	root_node = gtk_ctree_insert_node(GTK_CTREE(tree), NULL, NULL, &root_text, 4, folder_pixmap, folder_mask, ofolder_pixmap, ofolder_mask, FALSE, FALSE);
	dirnode = g_malloc0(sizeof (DirNode));
	dirnode->path = g_strdup("/");
	gtk_ctree_node_set_row_data_full(GTK_CTREE(tree), root_node, dirnode, destroy_cb);
	node = gtk_ctree_insert_node(GTK_CTREE(tree), root_node, NULL, &node_text, 4, NULL, NULL, NULL, NULL, TRUE, TRUE);
	gtk_ctree_expand(GTK_CTREE(tree), root_node);
	gtk_widget_show(tree);

	sep = gtk_hseparator_new();
	gtk_box_pack_start(GTK_BOX(vbox), sep, FALSE, FALSE, 0);
	gtk_widget_show(sep);

	bbox = gtk_hbutton_box_new();
	gtk_button_box_set_layout(GTK_BUTTON_BOX(bbox), GTK_BUTTONBOX_END);
	gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);

	ok = gtk_button_new_with_label(_("Ok"));
	gtk_object_set_user_data(GTK_OBJECT(ok), window);
	GTK_WIDGET_SET_FLAGS(ok, GTK_CAN_DEFAULT);
	gtk_window_set_default(GTK_WINDOW(window), ok);
	gtk_box_pack_start(GTK_BOX(bbox), ok, TRUE, TRUE, 0);
	gtk_signal_connect(GTK_OBJECT(ok), "clicked", GTK_SIGNAL_FUNC(ok_clicked), tree);
	gtk_widget_show(ok);

	cancel = gtk_button_new_with_label(_("Cancel"));
	GTK_WIDGET_SET_FLAGS(cancel, GTK_CAN_DEFAULT);
	gtk_box_pack_start(GTK_BOX(bbox), cancel, TRUE, TRUE, 0);
	gtk_signal_connect_object(GTK_OBJECT(cancel), "clicked", GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT(window));
	gtk_widget_show(cancel);

	gtk_box_pack_start(GTK_BOX(vbox), bbox, FALSE, FALSE, 0);
	gtk_widget_show(bbox);
	gtk_widget_show(vbox);

	if (current_path && *current_path)
	{
		currentdir = g_strdup(current_path);
		tpath = g_strdup("/");
		pos = strtok(currentdir, "/");
		node = gtk_ctree_find_by_row_data_custom(GTK_CTREE(tree), NULL, "/", filetreeent_compare_func);
		do
		{
			tpathnew = g_strconcat(tpath, pos, "/", NULL);
			g_free(tpath);
			tpath = tpathnew;
			nextnode = gtk_ctree_find_by_row_data_custom(GTK_CTREE(tree), node, tpath, filetreeent_compare_func);
			if (!nextnode)
				break;
			node = nextnode;
			pos = strtok(NULL, "/");
			gtk_ctree_get_node_info(GTK_CTREE(tree), node, NULL, NULL, NULL, NULL, NULL, NULL, &leaf, NULL);
			if (!leaf && pos)
				gtk_ctree_expand(GTK_CTREE(tree), node);
			else
			{
				gtk_ctree_select(GTK_CTREE(tree), node);
				break;
			}
		}
		while (pos);
		g_free(tpath);
		g_free(currentdir);
	}
	else
		gtk_ctree_select(GTK_CTREE(tree), root_node);

	return window;
}
