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/* X-Chat
 * Copyright (C) 1998 Peter Zelezny.
 *
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <time.h>

#include "fe-gtk.h"

#include <gtk/gtkhbox.h>
#include <gtk/gtkvbox.h>
#include <gtk/gtkhbbox.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkliststore.h>
#include <gtk/gtkmessagedialog.h>
#include <gtk/gtktreeview.h>
#include <gtk/gtktreeselection.h>

#include "../common/xchat.h"
#include "../common/fe.h"
#include "../common/modes.h"
#include "../common/outbound.h"
#include "../common/xchatc.h"
#include "gtkutil.h"
#include "maingui.h"
#include "banlist.h"

/* model for the banlist tree */
enum
{
	MASK_COLUMN,
	FROM_COLUMN,
	DATE_COLUMN,
	N_COLUMNS
};

static GtkTreeView *
get_view (struct session *sess)
{
	return GTK_TREE_VIEW (sess->res->banlist_treeview);
}

static GtkListStore *
get_store (struct session *sess)
{
	return GTK_LIST_STORE (gtk_tree_view_get_model (get_view (sess)));
}

static gboolean
supports_exempt (server *serv)
{
	char *cm = serv->chanmodes;

	if (serv->have_except)
		return TRUE;

	if (!cm)
		return FALSE;

	while (*cm)
	{
		if (*cm == ',')
			break;
		if (*cm == 'e')
			return TRUE;
		cm++;
	}

	return FALSE;
}

void
fe_add_ban_list (struct session *sess, char *mask, char *who, char *when, int is_exempt)
{
	GtkListStore *store;
	GtkTreeIter iter;
	char buf[512];

	store = get_store (sess);
	gtk_list_store_append (store, &iter);

	if (is_exempt)
	{
		snprintf (buf, sizeof (buf), "(EX) %s", mask);
		gtk_list_store_set (store, &iter, 0, buf, 1, who, 2, when, -1);
	} else
	{
		gtk_list_store_set (store, &iter, 0, mask, 1, who, 2, when, -1);
	}
}

void
fe_ban_list_end (struct session *sess, int is_exemption)
{
	gtk_widget_set_sensitive (sess->res->banlist_butRefresh, TRUE);
}

/**
 *  * Performs the actual refresh operations.
 *  */
static void
banlist_do_refresh (struct session *sess)
{
	char tbuf[256];
	if (sess->server->connected)
	{
		GtkListStore *store;

		gtk_widget_set_sensitive (sess->res->banlist_butRefresh, FALSE);

		snprintf (tbuf, sizeof tbuf, "XChat: Ban List (%s, %s)",
						sess->channel, sess->server->servername);
		mg_set_title (sess->res->banlist_window, tbuf);

		store = get_store (sess);
		gtk_list_store_clear (store);

		handle_command (sess, "ban", FALSE);

		if (supports_exempt (sess->server))
		{
			snprintf (tbuf, sizeof (tbuf), "quote mode %s +e", sess->channel);
			handle_command (sess, tbuf, FALSE);
		}

	} else
	{
		fe_message (_("Not connected."), FE_MSG_ERROR);
	}
}

static void
banlist_refresh (GtkWidget * wid, struct session *sess)
{
	/* JG NOTE: Didn't see actual use of wid here, so just forwarding
	   *          * this to chanlist_do_refresh because I use it without any widget
	   *          * param in chanlist_build_gui_list when the user presses enter
	   *          * or apply for the first time if the list has not yet been
	   *          * received.
	   *          */
	banlist_do_refresh (sess);
}

static int
banlist_unban_inner (gpointer none, struct session *sess, int do_exempts)
{
	GtkTreeModel *model;
	GtkTreeSelection *sel;
	GtkTreeIter iter;
	char tbuf[2048];
	char **masks, *tmp, *space;
	int num_sel, i;

	/* grab the list of selected items */
	model = GTK_TREE_MODEL (get_store (sess));
	sel = gtk_tree_view_get_selection (get_view (sess));
	num_sel = 0;
	if (gtk_tree_model_get_iter_first (model, &iter))
	{
		do
		{
			if (gtk_tree_selection_iter_is_selected (sel, &iter))
				num_sel++;
		}
		while (gtk_tree_model_iter_next (model, &iter));
	}

	if (num_sel < 1)
		return 0;

	/* create an array of all the masks */
	masks = calloc (1, num_sel * sizeof (char *));

	i = 0;
	gtk_tree_model_get_iter_first (model, &iter);
	do
	{
		if (gtk_tree_selection_iter_is_selected (sel, &iter))
		{
			gtk_tree_model_get (model, &iter, MASK_COLUMN, &masks[i], -1);
			space = strchr (masks[i], ' ');

			if (do_exempts)
			{
				if (space)
				{
					/* remove the "(EX) " */
					tmp = masks[i];
					masks[i] = g_strdup (space + 1);
					g_free (tmp);
					i++;
				}
			} else
			{
				if (!space)
					i++;
			}
		}
	}
	while (gtk_tree_model_iter_next (model, &iter));

	/* and send to server */
	if (do_exempts)
		send_channel_modes (sess, tbuf, masks, 0, i, '-', 'e', 0);
	else
		send_channel_modes (sess, tbuf, masks, 0, i, '-', 'b', 0);

	/* now free everything, and refresh banlist */	
	for (i=0; i < num_sel; i++)
		g_free (masks[i]);
	free (masks);

	return num_sel;
}

static void
banlist_unban (GtkWidget * wid, struct session *sess)
{
	int num = 0;

	num += banlist_unban_inner (wid, sess, FALSE);
	num += banlist_unban_inner (wid, sess, TRUE);

	if (num < 1)
	{
		fe_message (_("You must select some bans."), FE_MSG_ERROR);
		return;
	}

	banlist_do_refresh (sess);
}

static void
banlist_clear_cb (GtkDialog *dialog, gint response, gpointer sess)
{
	GtkTreeSelection *sel;

	gtk_widget_destroy (GTK_WIDGET (dialog));

	if (response == GTK_RESPONSE_OK)
	{
		sel = gtk_tree_view_get_selection (get_view (sess));
		gtk_tree_selection_select_all (sel);
		banlist_unban (NULL, sess);
	}
}

static void
banlist_clear (GtkWidget * wid, struct session *sess)
{
	GtkWidget *dialog;

	dialog = gtk_message_dialog_new (NULL, 0,
								GTK_MESSAGE_QUESTION, GTK_BUTTONS_OK_CANCEL,
					_("Are you sure you want to remove all bans in %s?"), sess->channel);
	g_signal_connect (G_OBJECT (dialog), "response",
							G_CALLBACK (banlist_clear_cb), sess);
	gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
	gtk_widget_show (dialog);
}

static void
banlist_add_selected_cb (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data)
{
	GSList **lp = data;
	GSList *list = NULL;
	GtkTreeIter *copy;

	if (!lp) return;
	list = *lp;
	copy = g_malloc (sizeof (GtkTreeIter));
	g_return_if_fail (copy != NULL);
	*copy = *iter;

	list = g_slist_append (list, copy);
	*(GSList **)data = list;
}

static void
banlist_crop (GtkWidget * wid, struct session *sess)
{
	GtkTreeSelection *select;
	GSList *list = NULL, *node;
	int num_sel;

	/* remember which bans are selected */
	select = gtk_tree_view_get_selection (get_view (sess));
	/* gtk_tree_selected_get_selected_rows() isn't present in gtk 2.0.x */
	gtk_tree_selection_selected_foreach (select, banlist_add_selected_cb,
	                                     &list);

	num_sel = g_slist_length (list);
	/* select all, then unselect those that we remembered */
	if (num_sel)
	{
		gtk_tree_selection_select_all (select);

		for (node = list; node; node = node->next)
			gtk_tree_selection_unselect_iter (select, node->data);
		
		g_slist_foreach (list, (GFunc)g_free, NULL);
		g_slist_free (list);

		banlist_unban (NULL, sess);
	} else
		fe_message (_("You must select some bans."), FE_MSG_ERROR);
}

static GtkWidget *
banlist_treeview_new (GtkWidget *box)
{
	GtkListStore *store;
	GtkWidget *view;
	GtkTreeSelection *select;
	GtkTreeViewColumn *col;

	store = gtk_list_store_new (N_COLUMNS, G_TYPE_STRING, G_TYPE_STRING,
	                            G_TYPE_STRING);
	g_return_val_if_fail (store != NULL, NULL);
	view = gtkutil_treeview_new (box, GTK_TREE_MODEL (store), NULL,
	                             MASK_COLUMN, _("Mask"),
	                             FROM_COLUMN, _("From"),
	                             DATE_COLUMN, _("Date"), -1);

	col = gtk_tree_view_get_column (GTK_TREE_VIEW (view), MASK_COLUMN);
	gtk_tree_view_column_set_alignment (col, 0.5);
	gtk_tree_view_column_set_min_width (col, 300);
	gtk_tree_view_column_set_sort_column_id (col, MASK_COLUMN);

	col = gtk_tree_view_get_column (GTK_TREE_VIEW (view), FROM_COLUMN);
	gtk_tree_view_column_set_alignment (col, 0.5);
	gtk_tree_view_column_set_sort_column_id (col, FROM_COLUMN);

	col = gtk_tree_view_get_column (GTK_TREE_VIEW (view), DATE_COLUMN);
	gtk_tree_view_column_set_alignment (col, 0.5);

	select = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
	gtk_tree_selection_set_mode (select, GTK_SELECTION_MULTIPLE);

	gtk_widget_show (view);
	return view;
}

static void
banlist_closegui (GtkWidget *wid, session *sess)
{
	if (is_session (sess))
		sess->res->banlist_window = 0;
}

void
banlist_opengui (struct session *sess)
{
	GtkWidget *vbox1;
	GtkWidget *bbox;
	char tbuf[256];

	if (sess->res->banlist_window)
	{
		mg_bring_tofront (sess->res->banlist_window);
		return;
	}

	if (sess->type != SESS_CHANNEL)
	{
		fe_message (_("You can only open the Ban List window while in a channel tab."), FE_MSG_ERROR);
		return;
	}

	snprintf (tbuf, sizeof tbuf, _("XChat: Ban List (%s)"),
					sess->server->servername);

	sess->res->banlist_window = mg_create_generic_tab ("BanList", tbuf, FALSE,
					TRUE, banlist_closegui, sess, 550, 200, &vbox1, sess->server);

	/* create banlist view */
	sess->res->banlist_treeview = banlist_treeview_new (vbox1);

	bbox = gtk_hbutton_box_new ();
	gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_SPREAD);
	gtk_container_set_border_width (GTK_CONTAINER (bbox), 5);
	gtk_box_pack_end (GTK_BOX (vbox1), bbox, 0, 0, 0);
	gtk_widget_show (bbox);

	gtkutil_button (bbox, GTK_STOCK_REMOVE, 0, banlist_unban, sess,
	                _("Remove"));
	gtkutil_button (bbox, GTK_STOCK_REMOVE, 0, banlist_crop, sess,
	                _("Crop"));
	gtkutil_button (bbox, GTK_STOCK_CLEAR, 0, banlist_clear, sess,
	                _("Clear"));

	sess->res->banlist_butRefresh = gtkutil_button (bbox, GTK_STOCK_REFRESH, 0, banlist_refresh, sess, _("Refresh"));

	banlist_do_refresh (sess);

	gtk_widget_show (sess->res->banlist_window);
}