Sylpheed

/*

 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client

 * Copyright (C) 1999-2005 Hiroyuki Yamamoto

 *

 * 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.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include "defs.h"

#include <glib.h>

#include <gdk/gdkkeysyms.h>

#include <gtk/gtkmain.h>

#include <gtk/gtkwidget.h>

#include <gtk/gtkdialog.h>

#include <gtk/gtkwindow.h>

#include <gtk/gtksignal.h>

#include <gtk/gtkvbox.h>

#include <gtk/gtkhbox.h>

#include <gtk/gtklabel.h>

#include <gtk/gtkentry.h>

#include <gtk/gtkctree.h>

#include <gtk/gtkscrolledwindow.h>

#include <gtk/gtkbutton.h>

#include <gtk/gtkhbbox.h>

#include <gtk/gtkstock.h>

#include <string.h>

#include <fnmatch.h>

#include "intl.h"

#include "grouplistdialog.h"

#include "manage_window.h"

#include "gtkutils.h"

#include "utils.h"

#include "news.h"

#include "folder.h"

#include "alertpanel.h"

#include "recv.h"

#include "socket.h"

#define GROUPLIST_DIALOG_WIDTH                450

#define GROUPLIST_DIALOG_HEIGHT                400

#define GROUPLIST_COL_NAME_WIDTH        250

static gboolean ack;

static gboolean locked;

static GtkWidget *dialog;

static GtkWidget *entry;

static GtkWidget *ctree;

static GtkWidget *status_label;

static GtkWidget *ok_button;

static GSList *group_list;

static Folder *news_folder;

static GSList *subscribed;

static void grouplist_dialog_create        (void);

static void grouplist_dialog_set_list        (const gchar        *pattern,

                                         gboolean         refresh);

static void grouplist_search                (void);

static void grouplist_clear                (void);

static gboolean grouplist_recv_func        (SockInfo        *sock,

                                         gint                 count,

                                         gint                 read_bytes,

                                         gpointer         data);

static gint window_deleted        (GtkWidget        *widget,

                                 GdkEventAny        *event,

                                 gpointer         data);

static void ok_clicked                (GtkWidget        *widget,

                                 gpointer         data);

static void cancel_clicked        (GtkWidget        *widget,

                                 gpointer         data);

static void refresh_clicked        (GtkWidget        *widget,

                                 gpointer         data);

static gboolean key_pressed        (GtkWidget        *widget,

                                 GdkEventKey        *event,

                                 gpointer         data);

static void ctree_selected        (GtkCTree        *ctree,

                                 GtkCTreeNode        *node,

                                 gint                 column,

                                 gpointer         data);

static void ctree_unselected        (GtkCTree        *ctree,

                                 GtkCTreeNode        *node,

                                 gint                 column,

                                 gpointer         data);

static void entry_activated        (GtkEditable        *editable);

static void search_clicked        (GtkWidget        *widget,

                                 gpointer         data);

GSList *grouplist_dialog(Folder *folder)

{

        GNode *node;

        FolderItem *item;

        if (dialog && GTK_WIDGET_VISIBLE(dialog)) return NULL;

        if (!dialog)

                grouplist_dialog_create();

        news_folder = folder;

        gtk_widget_show(dialog);

        gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);

        manage_window_set_transient(GTK_WINDOW(dialog));

        gtk_widget_grab_focus(ok_button);

        gtk_widget_grab_focus(ctree);

        GTK_EVENTS_FLUSH();

        subscribed = NULL;

        for (node = folder->node->children; node != NULL; node = node->next) {

                item = FOLDER_ITEM(node->data);

                subscribed = g_slist_append(subscribed, g_strdup(item->path));

        }

        grouplist_dialog_set_list(NULL, TRUE);

        if (ack) gtk_main();

        manage_window_focus_out(dialog, NULL, NULL);

        gtk_widget_hide(dialog);

        if (!ack) {

                slist_free_strings(subscribed);

                g_slist_free(subscribed);

                subscribed = NULL;

                for (node = folder->node->children; node != NULL;

                     node = node->next) {

                        item = FOLDER_ITEM(node->data);

                        subscribed = g_slist_append(subscribed,

                                                    g_strdup(item->path));

                }

        }

        grouplist_clear();

        return subscribed;

}

static void grouplist_dialog_create(void)

{

        GtkWidget *vbox;

        GtkWidget *hbox;

        GtkWidget *msg_label;

        GtkWidget *search_button;

        GtkWidget *confirm_area;

        GtkWidget *cancel_button;        

        GtkWidget *refresh_button;        

        GtkWidget *scrolledwin;

        gchar *titles[3];

        gint i;

        dialog = gtk_dialog_new();

        gtk_window_set_policy(GTK_WINDOW(dialog), FALSE, TRUE, FALSE);

        gtk_widget_set_size_request(dialog,

                                    GROUPLIST_DIALOG_WIDTH,

                                    GROUPLIST_DIALOG_HEIGHT);

        gtk_container_set_border_width

                (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);

        gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);

        gtk_window_set_title(GTK_WINDOW(dialog), _("Subscribe to newsgroup"));

        g_signal_connect(G_OBJECT(dialog), "delete_event",

                         G_CALLBACK(window_deleted), NULL);

        g_signal_connect(G_OBJECT(dialog), "key_press_event",

                         G_CALLBACK(key_pressed), NULL);

        MANAGE_WINDOW_SIGNALS_CONNECT(dialog);

        gtk_widget_realize(dialog);

        vbox = gtk_vbox_new(FALSE, 8);

        gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);

        gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);

        hbox = gtk_hbox_new(FALSE, 0);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);

        msg_label = gtk_label_new(_("Select newsgroups to subscribe."));

        gtk_box_pack_start(GTK_BOX(hbox), msg_label, FALSE, FALSE, 0);

        hbox = gtk_hbox_new(FALSE, 8);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);

        msg_label = gtk_label_new(_("Find groups:"));

        gtk_box_pack_start(GTK_BOX(hbox), msg_label, FALSE, FALSE, 0);

        entry = gtk_entry_new();

        gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);

        g_signal_connect(G_OBJECT(entry), "activate",

                         G_CALLBACK(entry_activated), NULL);

        search_button = gtk_button_new_with_label(_(" Search "));

        gtk_box_pack_start(GTK_BOX(hbox), search_button, FALSE, FALSE, 0);

        g_signal_connect(G_OBJECT(search_button), "clicked",

                         G_CALLBACK(search_clicked), NULL);

        scrolledwin = gtk_scrolled_window_new(NULL, NULL);

        gtk_box_pack_start(GTK_BOX (vbox), scrolledwin, TRUE, TRUE, 0);

        gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (scrolledwin),

                                       GTK_POLICY_AUTOMATIC,

                                       GTK_POLICY_AUTOMATIC);

        titles[0] = _("Newsgroup name");

        titles[1] = _("Messages");

        titles[2] = _("Type");

        ctree = gtk_ctree_new_with_titles(3, 0, titles);

        gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);

        gtk_clist_set_column_width

                (GTK_CLIST(ctree), 0, GROUPLIST_COL_NAME_WIDTH);

        gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_MULTIPLE);

        gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_DOTTED);

        gtk_ctree_set_expander_style(GTK_CTREE(ctree),

                                     GTK_CTREE_EXPANDER_SQUARE);

        for (i = 0; i < 3; i++)

                GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,

                                       GTK_CAN_FOCUS);

        g_signal_connect(G_OBJECT(ctree), "tree_select_row",

                         G_CALLBACK(ctree_selected), NULL);

        g_signal_connect(G_OBJECT(ctree), "tree_unselect_row",

                         G_CALLBACK(ctree_unselected), NULL);

        hbox = gtk_hbox_new(FALSE, 0);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);

        status_label = gtk_label_new("");

        gtk_box_pack_start(GTK_BOX(hbox), status_label, FALSE, FALSE, 0);

        gtkut_stock_button_set_create(&confirm_area,

                                      &ok_button, GTK_STOCK_OK,

                                      &cancel_button, GTK_STOCK_CANCEL,

                                      &refresh_button, GTK_STOCK_REFRESH);

        gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area),

                          confirm_area);

        gtk_widget_grab_default(ok_button);

        g_signal_connect(G_OBJECT(ok_button), "clicked",

                         G_CALLBACK(ok_clicked), NULL);

        g_signal_connect(G_OBJECT(cancel_button), "clicked",

                         G_CALLBACK(cancel_clicked), NULL);

        g_signal_connect(G_OBJECT(refresh_button), "clicked",

                         G_CALLBACK(refresh_clicked), NULL);

        gtk_widget_show_all(GTK_DIALOG(dialog)->vbox);

}

static GHashTable *branch_node_table;

static void grouplist_hash_init(void)

{

        branch_node_table = g_hash_table_new(g_str_hash, g_str_equal);

}

static void grouplist_hash_done(void)

{

        hash_free_strings(branch_node_table);

        g_hash_table_destroy(branch_node_table);

}

static GtkCTreeNode *grouplist_hash_get_branch_node(const gchar *name)

{

        return g_hash_table_lookup(branch_node_table, name);

}

static void grouplist_hash_set_branch_node(const gchar *name,

                                           GtkCTreeNode *node)

{

        g_hash_table_insert(branch_node_table, g_strdup(name), node);

}

static gchar *grouplist_get_parent_name(const gchar *name)

{

        gchar *p;

        p = strrchr(name, '.');

        if (!p)

                return g_strdup("");

        return g_strndup(name, p - name);

}

static GtkCTreeNode *grouplist_create_parent(const gchar *name,

                                             const gchar *pattern)

{

        GtkCTreeNode *parent;

        GtkCTreeNode *node;

        gchar *cols[3];

        gchar *parent_name;

        if (*name == '\0') return NULL;

        node = grouplist_hash_get_branch_node(name);

        if (node != NULL) return node;

        cols[0] = (gchar *)name;

        cols[1] = cols[2] = "";

        parent_name = grouplist_get_parent_name(name);

        parent = grouplist_create_parent(parent_name, pattern);

        node = parent ? GTK_CTREE_ROW(parent)->children

                : GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);

        node = gtk_ctree_insert_node(GTK_CTREE(ctree), parent, node,

                                     cols, 0, NULL, NULL, NULL, NULL,

                                     FALSE, FALSE);

        if (parent && fnmatch(pattern, parent_name, 0) != 0)

                gtk_ctree_expand(GTK_CTREE(ctree), parent);

        gtk_ctree_node_set_selectable(GTK_CTREE(ctree), node, FALSE);

        grouplist_hash_set_branch_node(name, node);

        g_free(parent_name);

        return node;

}

static GtkCTreeNode *grouplist_create_branch(NewsGroupInfo *ginfo,

                                             const gchar *pattern)

{

        GtkCTreeNode *node;

        GtkCTreeNode *parent;

        gchar *name = (gchar *)ginfo->name;

        gchar *parent_name;

        gchar *count_str;

        gchar *cols[3];

        gint count;

        count = ginfo->last - ginfo->first;

        if (count < 0)

                count = 0;

        count_str = itos(count);

        cols[0] = ginfo->name;

        cols[1] = count_str;

        if (ginfo->type == 'y')

                cols[2] = "";

        else if (ginfo->type == 'm')

                cols[2] = _("moderated");

        else if (ginfo->type == 'n')

                cols[2] = _("readonly");

        else

                cols[2] = _("unknown");

        parent_name = grouplist_get_parent_name(name);

        parent = grouplist_create_parent(parent_name, pattern);

        node = grouplist_hash_get_branch_node(name);

        if (node) {

                gtk_ctree_set_node_info(GTK_CTREE(ctree), node, cols[0], 0,

                                        NULL, NULL, NULL, NULL, FALSE, FALSE);

                gtk_ctree_node_set_text(GTK_CTREE(ctree), node, 1, cols[1]);

                gtk_ctree_node_set_text(GTK_CTREE(ctree), node, 2, cols[2]);

        } else {

                node = parent ? GTK_CTREE_ROW(parent)->children

                        : GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);

                node = gtk_ctree_insert_node(GTK_CTREE(ctree), parent, node,

                                             cols, 0, NULL, NULL, NULL, NULL,

                                             TRUE, FALSE);

                if (parent && fnmatch(pattern, parent_name, 0) != 0)

                        gtk_ctree_expand(GTK_CTREE(ctree), parent);

        }

        gtk_ctree_node_set_selectable(GTK_CTREE(ctree), node, TRUE);

        if (node)

                gtk_ctree_node_set_row_data(GTK_CTREE(ctree), node, ginfo);

        g_free(parent_name);

        return node;

}

static void grouplist_dialog_set_list(const gchar *pattern, gboolean refresh)

{

        GSList *cur;

        GtkCTreeNode *node;

        if (locked) return;

        locked = TRUE;

        if (!pattern || *pattern == '\0')

                pattern = "*";

        if (refresh) {

                ack = TRUE;

                grouplist_clear();

                recv_set_ui_func(grouplist_recv_func, NULL);

                group_list = news_get_group_list(news_folder);

                group_list = g_slist_reverse(group_list);

                recv_set_ui_func(NULL, NULL);

                if (group_list == NULL && ack == TRUE) {

                        alertpanel_error(_("Can't retrieve newsgroup list."));

                        locked = FALSE;

                        return;

                }

        } else {

                g_signal_handlers_block_by_func

                        (G_OBJECT(ctree), G_CALLBACK(ctree_unselected),

                         NULL);

                gtk_clist_clear(GTK_CLIST(ctree));

                g_signal_handlers_unblock_by_func

                        (G_OBJECT(ctree), G_CALLBACK(ctree_unselected),

                         NULL);

        }

        gtk_entry_set_text(GTK_ENTRY(entry), pattern);

        grouplist_hash_init();

        gtk_clist_freeze(GTK_CLIST(ctree));

        g_signal_handlers_block_by_func(G_OBJECT(ctree),

                                        G_CALLBACK(ctree_selected), NULL);

        for (cur = group_list; cur != NULL ; cur = cur->next) {

                NewsGroupInfo *ginfo = (NewsGroupInfo *)cur->data;

                if (fnmatch(pattern, ginfo->name, 0) == 0) {

                        node = grouplist_create_branch(ginfo, pattern);

                        if (g_slist_find_custom(subscribed, ginfo->name,

                                                (GCompareFunc)g_strcasecmp)

                            != NULL)

                                gtk_ctree_select(GTK_CTREE(ctree), node);

                }

        }

        g_signal_handlers_unblock_by_func(G_OBJECT(ctree),

                                          G_CALLBACK(ctree_selected), NULL);

        gtk_clist_thaw(GTK_CLIST(ctree));

        grouplist_hash_done();

        gtk_label_set_text(GTK_LABEL(status_label), _("Done."));

        locked = FALSE;

}

static void grouplist_search(void)

{

        gchar *str;

        if (locked) return;

        str = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);

        grouplist_dialog_set_list(str, FALSE);

        g_free(str);

}

static void grouplist_clear(void)

{

        g_signal_handlers_block_by_func(G_OBJECT(ctree),

                                        G_CALLBACK(ctree_unselected), NULL);

        gtk_clist_clear(GTK_CLIST(ctree));

        gtk_entry_set_text(GTK_ENTRY(entry), "");

        news_group_list_free(group_list);

        group_list = NULL;

        g_signal_handlers_unblock_by_func(G_OBJECT(ctree),

                                          G_CALLBACK(ctree_unselected), NULL);

}

static gboolean grouplist_recv_func(SockInfo *sock, gint count, gint read_bytes,

                                    gpointer data)

{

        gchar buf[BUFFSIZE];

        g_snprintf(buf, sizeof(buf),

                   _("%d newsgroups received (%s read)"),

                   count, to_human_readable(read_bytes));

        gtk_label_set_text(GTK_LABEL(status_label), buf);

        GTK_EVENTS_FLUSH();

        if (ack == FALSE)

                return FALSE;

        else

                return TRUE;

}

static gint window_deleted(GtkWidget *widget, GdkEventAny *event, gpointer data)

{

        ack = FALSE;

        if (gtk_main_level() > 1)

                gtk_main_quit();

        return TRUE;

}

static void ok_clicked(GtkWidget *widget, gpointer data)

{

        ack = TRUE;

        if (gtk_main_level() > 1)

                gtk_main_quit();

}

static void cancel_clicked(GtkWidget *widget, gpointer data)

{

        ack = FALSE;

        if (gtk_main_level() > 1)

                gtk_main_quit();

}

static void refresh_clicked(GtkWidget *widget, gpointer data)

{ 

        gchar *str;

        if (locked) return;

        news_remove_group_list_cache(news_folder);

        str = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);

        grouplist_dialog_set_list(str, TRUE);

        g_free(str);

}

static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event,

                            gpointer data)

{

        if (event && event->keyval == GDK_Escape)

                cancel_clicked(NULL, NULL);

        return FALSE;

}

static void ctree_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,

                           gpointer data)

{

        NewsGroupInfo *ginfo;

        ginfo = gtk_ctree_node_get_row_data(ctree, node);

        if (!ginfo) return;

        subscribed = g_slist_append(subscribed, g_strdup(ginfo->name));

}

static void ctree_unselected(GtkCTree *ctree, GtkCTreeNode *node, gint column,

                             gpointer data)

{

        NewsGroupInfo *ginfo;

        GSList *list;

        ginfo = gtk_ctree_node_get_row_data(ctree, node);

        if (!ginfo) return;

        list = g_slist_find_custom(subscribed, ginfo->name,

                                   (GCompareFunc)g_strcasecmp);

        if (list) {

                g_free(list->data);

                subscribed = g_slist_remove(subscribed, list->data);

        }

}

static void entry_activated(GtkEditable *editable)

{

        grouplist_search();

}

static void search_clicked(GtkWidget *widget, gpointer data)

{

        grouplist_search();

}