/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *		Shreyas Srinivasan <sshreyas@novell.com>
 *	Sankar P <psankar@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <glib/gi18n.h>

#include <libedataserverui/e-contact-store.h>

#include <e-util/e-util.h>
#include <e-util/e-alert-dialog.h>
#include <e-util/e-util-private.h>
#include <e-gw-container.h>
#include <e-gw-connection.h>
#include <e-gw-message.h>

#include <mail/em-account-editor.h>
#include <mail/em-config.h>
#include <mail/mail-ops.h>
#include <mail/mail-session.h>
#include <libedataserver/e-account.h>
#include <libedataserver/e-account-list.h>
#include <e-util/e-icon-factory.h>

#include <libedataserverui/e-passwords.h>
#include <libedataserverui/e-name-selector.h>
#include <proxy.h>
#include <string.h>

#define GW(name) e_builder_get_widget (priv->builder, name)

#define ACCOUNT_PICTURE 0
#define ACCOUNT_NAME 1
#define PROXY_ADD_DIALOG 2
#define PROXY_EDIT_DIALOG 3

static GObjectClass *parent_class = NULL;

static gboolean proxy_page_changed_cb (GtkNotebook *notebook, GtkNotebookPage *page, gint num, EAccount *account);

struct _proxyDialogPrivate {
	/* UI data for the Add/Edit Proxy dialog*/
	GtkBuilder *builder;
	/* UI data for Proxy Tab*/
	GtkBuilder *builder_tab;

	/* Widgets */
	GtkWidget *main;

	/*name selector dialog*/
	ENameSelector *proxy_name_selector;

	GtkTreeView *tree;
	GtkTreeStore *store;

	/* Check Boxes for storing proxy priveleges*/
	GtkWidget *tab_dialog;
	GtkWidget *account_name;
	GtkWidget *mail_read;
	GtkWidget *mail_write;
	GtkWidget *app_read;
	GtkWidget *app_write;
	GtkWidget *note_read;
	GtkWidget *note_write;
	GtkWidget *task_read;
	GtkWidget *task_write;
	GtkWidget *alarms;
	GtkWidget *notifications;
	GtkWidget *options;
	GtkWidget *private;
        gchar *help_section;

	GList *proxy_list;
};

static void
proxy_dialog_dispose (GObject *object)
{
	proxyDialog *prd = (proxyDialog *) object;

	g_return_if_fail (IS_PROXY_DIALOG (prd));

	if (parent_class->dispose)
		(*parent_class->dispose) (object);
}

static void
free_proxy_handler (proxyHandler *handler)
{
	if (handler->uniqueid)
		g_free (handler->uniqueid);

	if (handler->proxy_name)
		g_free (handler->proxy_name);

	if (handler->proxy_email)
		g_free (handler->proxy_email);

	handler->uniqueid = NULL;
	handler->proxy_name = NULL;
	handler->proxy_email = NULL;
}

void
free_proxy_list (GList *proxy_list)
{
	if (proxy_list) {
		g_list_foreach (proxy_list, (GFunc) free_proxy_handler, NULL);
		g_list_free (proxy_list);
		proxy_list = NULL;
	}
}

static void
proxy_dialog_finalize (GObject *object)
{
	proxyDialog *prd = (proxyDialog *) object;
	proxyDialogPrivate *priv;

	g_return_if_fail (IS_PROXY_DIALOG (prd));
	priv = prd->priv;

	if (priv->proxy_name_selector)
		g_object_unref (priv->proxy_name_selector);

	if (priv) {
		free_proxy_list (priv->proxy_list);
		g_free (priv->help_section);
		g_object_unref (priv->builder_tab);
		g_free (prd->priv);
		prd->priv = NULL;
	}

	prd = NULL;
	if (parent_class->finalize)
		(* parent_class->finalize) (object);
}

/* Class initialization function for the Proxy*/
static void
proxy_dialog_class_init (GObjectClass *object)
{
	proxyDialogClass *klass;
	GObjectClass *object_class;

	klass = PROXY_DIALOG_CLASS (object);
	parent_class = g_type_class_peek_parent (klass);
	object_class = G_OBJECT_CLASS (klass);

	object_class->finalize = proxy_dialog_finalize;
	object_class->dispose = proxy_dialog_dispose;
}

static void
proxy_dialog_init (GObject *object)
{
	proxyDialog *prd;
	proxyDialogPrivate *priv;

	prd = PROXY_DIALOG (object);
	priv = g_new0 (proxyDialogPrivate, 1);

	prd->priv = priv;

	prd->cnc = NULL;
	priv->tab_dialog = NULL;
	priv->builder = NULL;
	priv->builder_tab = NULL;
	priv->main = NULL;
	priv->tree = NULL;
	priv->store = NULL;
	priv->proxy_name_selector = NULL;
	priv->account_name = NULL;
	priv->mail_read = NULL;
	priv->mail_write = NULL;
	priv->app_read = NULL;
	priv->app_write = NULL;
	priv->note_read = NULL;
	priv->note_write = NULL;
	priv->task_read = NULL;
	priv->task_write = NULL;
	priv->alarms = NULL;
	priv->notifications = NULL;
	priv->options = NULL;
	priv->private = NULL;
	priv->help_section = NULL;

	priv->proxy_list = NULL;
}

GType
proxy_dialog_get_type (void)
{
  static GType type = 0;

  if (type == 0) {
    static const GTypeInfo info = {
      sizeof (proxyDialogClass),
      NULL,   /* base_init */
      NULL,   /* base_finalize */
      (GClassInitFunc) proxy_dialog_class_init,   /* class_init */
      NULL,   /* class_finalize */
      NULL,   /* class_data */
      sizeof (proxyDialog),
     0,      /* n_preallocs */
     (GInstanceInitFunc) proxy_dialog_init,
	NULL    /* instance_init */
    };

    type = g_type_register_static (G_TYPE_OBJECT,
                                   "proxyDialogType",
                                   &info, 0);
  }

  return type;
}

proxyDialog *
proxy_dialog_new (void)
{
	proxyDialog *prd;

	prd = g_object_new (TYPE_PROXY_DIALOG, NULL);

	return prd;
}

static gint
proxy_get_permissions_from_dialog (EAccount *account)
{
	gint permissions;
	proxyDialogPrivate *priv;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	permissions = 0;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->mail_read)))
		permissions |= E_GW_PROXY_MAIL_READ;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->mail_write)))
		permissions |= E_GW_PROXY_MAIL_WRITE;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->app_read)))
		permissions |= E_GW_PROXY_APPOINTMENT_READ;

	if (gtk_toggle_button_get_active ( GTK_TOGGLE_BUTTON (priv->app_write)))
		permissions |= E_GW_PROXY_APPOINTMENT_WRITE;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->task_read)))
		permissions |= E_GW_PROXY_TASK_READ;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->task_write)))
		permissions |= E_GW_PROXY_TASK_WRITE;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->note_read)))
		permissions |= E_GW_PROXY_NOTES_READ;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->note_write)))
		permissions |= E_GW_PROXY_NOTES_WRITE;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->alarms)))
		permissions |= E_GW_PROXY_GET_ALARMS;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->notifications)))
		permissions |= E_GW_PROXY_GET_NOTIFICATIONS;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->options)))
		permissions |= E_GW_PROXY_MODIFY_FOLDERS;

	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->private)))
		permissions |= E_GW_PROXY_READ_PRIVATE;

	return permissions;
}

static gint
proxy_dialog_store_widgets_data (EAccount *account, gint32 dialog, GtkWindow *parent)
{
	GtkTreeIter iter;
	GtkTreeSelection* account_select;
	GtkTreeModel *model;
	proxyHandler *new_proxy = NULL;
	proxyDialogPrivate *priv;
	gchar *account_mailid;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;

	switch (dialog)
	{
		case PROXY_ADD_DIALOG:
			{
				ENameSelectorEntry *name_selector_entry;
				EDestinationStore *destination_store;
				GList *destinations, *tmp;
				gchar *name, *email;
				GList *existing_list;
				name_selector_entry = e_name_selector_peek_section_entry (priv->proxy_name_selector, "Add User");
				destination_store = e_name_selector_entry_peek_destination_store (E_NAME_SELECTOR_ENTRY (
							name_selector_entry));
				destinations = e_destination_store_list_destinations (destination_store);
				tmp = destinations;

				if (!tmp) {
					e_alert_run_dialog_for_args (parent,
								     "org.gnome.evolution.proxy:no-user",
								     NULL, NULL);
					return -1;
				}

				for (; tmp != NULL; tmp = g_list_next (tmp)) {
					email = NULL;
					email = (gchar *)e_destination_get_email (tmp->data);

					if (g_str_equal(email, ""))
						continue;

					if (g_strrstr (email, "@") == NULL) {
						e_alert_run_dialog_for_args (parent,
									     "org.gnome.evolution.proxy:invalid-user",
									     email, NULL);
						return -1;
					}
					if (!g_ascii_strcasecmp(e_gw_connection_get_user_email (prd->cnc), email)) {
						e_alert_run_dialog_for_args (parent,
									     "org.gnome.evolution.proxy:invalid-user",
									     email, NULL);
						return -1;
					}

					/*check whether already exists*/
					existing_list = priv->proxy_list;

					for (;existing_list; existing_list = g_list_next(existing_list)) {
						new_proxy = (proxyHandler *) existing_list->data;
						if (!g_ascii_strcasecmp (new_proxy->proxy_email, email)) {
							if (new_proxy->flags & E_GW_PROXY_DELETED) {
								new_proxy->permissions = proxy_get_permissions_from_dialog (account);
								if (new_proxy->flags & E_GW_PROXY_NEW)
									new_proxy->flags = E_GW_PROXY_NEW;
								else
									new_proxy->flags = E_GW_PROXY_EDITED;
								return 0;
							}

							e_alert_run_dialog_for_args (parent,
										     "org.gnome.evolution.proxy:user-is-proxy",
										     email, NULL);
							return -1;
						}
					}
				}
				tmp = destinations;

				for (; tmp != NULL; tmp = g_list_next (tmp)) {
					name = NULL; email = NULL;
					email = (gchar *) e_destination_get_email (tmp->data);

					if (g_str_equal(email, ""))
						continue;

					name = (gchar *) e_destination_get_name (tmp->data);
					new_proxy = (proxyHandler *) g_malloc0 (sizeof (proxyHandler));

					if (name)
						new_proxy->proxy_name = g_strdup (name);
					else
						new_proxy->proxy_name = g_strdup (email);

					new_proxy->proxy_email = g_strdup (email);
					new_proxy->uniqueid = NULL;
					new_proxy->flags =  E_GW_PROXY_NEW;
					new_proxy->permissions = proxy_get_permissions_from_dialog (account);

					priv->proxy_list = g_list_append (priv->proxy_list, new_proxy);
				}
			}
			break;
		case PROXY_EDIT_DIALOG:
			account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));
			gtk_tree_selection_get_selected (account_select, &model, &iter);
			gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
			account_mailid = g_strrstr (account_mailid, "\n") + 1;
			new_proxy = proxy_get_item_from_list (account, account_mailid);

			if (!new_proxy->flags & E_GW_PROXY_NEW)
				new_proxy->flags = E_GW_PROXY_EDITED;

			new_proxy->permissions = proxy_get_permissions_from_dialog (account);
			break;
		default:
			return -1;
	}

	return 0;
}

static gboolean
proxy_dialog_initialize_widgets (EAccount *account)
{
	proxyDialogPrivate *priv;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	priv->account_name = GW ("proxy_account_name");
	priv->mail_read = GW ("mailRead");
	priv->mail_write = GW ("mailWrite");
	priv->app_read = GW ("appRead");
	priv->app_write = GW ("appWrite");
	priv->note_read = GW ("noteRead");
	priv->note_write = GW ("noteWrite");
	priv->task_read = GW ("taskRead");
	priv->task_write = GW ("taskWrite");
	priv->alarms = GW ("alarms");
	priv->notifications = GW ("notifications");
	priv->options = GW ("modify_rules");
	priv->private = GW ("read_private");

	return (priv->account_name
		&& priv->mail_read
		&& priv->mail_write
		&& priv->app_read
		&& priv->app_write
		&& priv->note_read
		&& priv->note_write
		&& priv->task_read
		&& priv->task_write
		&& priv->alarms
		&& priv->notifications
		&& priv->options
		&& priv->private);
}

static EGwConnection *
proxy_get_cnc (EAccount *account, GtkWindow *parent_window)
{
	EGwConnection *cnc;
	const gchar *failed_auth;
	gchar *uri, *key, *prompt, *password = NULL;
	CamelURL *url;
	const gchar *poa_address, *use_ssl, *soap_port;
	gboolean remember;

	url = camel_url_new (account->source->url, NULL);
	if (url == NULL)
		return NULL;
	poa_address = url->host;
	if (!poa_address || strlen (poa_address) ==0)
		return NULL;

        soap_port = camel_url_get_param (url, "soap_port");
        if (!soap_port || strlen (soap_port) == 0)
                soap_port = "7191";
	use_ssl = camel_url_get_param (url, "use_ssl");

	key =  g_strdup_printf ("groupwise://%s@%s/", url->user, poa_address);

	if (use_ssl && !g_str_equal (use_ssl, "never"))
		uri = g_strdup_printf ("https://%s:%s/soap", poa_address, soap_port);
	else
		uri = g_strdup_printf ("http://%s:%s/soap", poa_address, soap_port);

	failed_auth = "";
	cnc = NULL;

	prompt = g_strdup_printf (_("%sEnter password for %s (user %s)"),
			failed_auth, poa_address, url->user);

	password = e_passwords_get_password ("Groupwise", key);
	if (!password)
		password = e_passwords_ask_password (prompt, "Groupwise", key, prompt,
				E_PASSWORDS_REMEMBER_FOREVER|E_PASSWORDS_SECRET, &remember, parent_window);
	g_free (prompt);

	cnc = e_gw_connection_new (uri, url->user, password);
	if (!E_IS_GW_CONNECTION(cnc) && use_ssl && g_str_equal (use_ssl, "when-possible")) {
		gchar *http_uri = g_strconcat ("http://", uri + 8, NULL);
		cnc = e_gw_connection_new (http_uri, url->user, password);
		g_free (http_uri);
	}

	camel_url_free (url);
	return cnc;
}

void
proxy_abort (GtkWidget *button, EConfigHookItemFactoryData *data)
{
	EMConfigTargetAccount *target_account;
	EAccount *account;
	proxyDialog *prd = NULL;

	target_account = (EMConfigTargetAccount *)data->config->target;
	account = target_account->account;
	prd = g_object_get_data ((GObject *)account, "prd");

	if (!prd || !prd->priv || !prd->priv->proxy_list)
		return;

	g_object_unref (prd);
	prd = NULL;
}

void
proxy_commit (GtkWidget *button, EConfigHookItemFactoryData *data)
{
	EAccount *account;
	EMConfigTargetAccount *target_account;
	proxyDialogPrivate *priv;
	GList *list_iter;
	proxyHandler *aclInstance;
	proxyDialog *prd = NULL;

	target_account = (EMConfigTargetAccount *)data->config->target;
	account = target_account->account;
	prd = g_object_get_data ((GObject *)account, "prd");

	/* In case of non-GroupWise preferences edit, "prd" will be NULL. */
	if (!prd || !prd->priv || !prd->priv->proxy_list)
		return;

	priv = prd->priv;
	list_iter = priv->proxy_list;
	for (;list_iter; list_iter = g_list_next (list_iter)) {
		aclInstance = (proxyHandler *) list_iter->data;

		/* Handle case where the structure is new and deleted*/
		if ( !((aclInstance->flags & E_GW_PROXY_NEW) && (aclInstance->flags & E_GW_PROXY_DELETED))) {

			if ( !E_IS_GW_CONNECTION(prd->cnc))	/* Add check in case the connection request fails*/
				prd->cnc = proxy_get_cnc (account, GTK_WINDOW (gtk_widget_get_toplevel (button)));

			if (aclInstance->flags & E_GW_PROXY_NEW )
				e_gw_connection_add_proxy (prd->cnc, aclInstance);

			if ((aclInstance->flags & E_GW_PROXY_DELETED) && !(aclInstance->flags & E_GW_PROXY_NEW))
				e_gw_connection_remove_proxy (prd->cnc, aclInstance);

			if (aclInstance->flags & E_GW_PROXY_EDITED)
				e_gw_connection_modify_proxy (prd->cnc, aclInstance);
		}
	}

	g_object_unref (prd);
	prd = NULL;
}

static void
proxy_setup_meta_tree_view (EAccount *account)
{
	proxyDialog *prd = NULL;
	proxyDialogPrivate *priv;
	GtkTreeSelection *selection;
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
				 "xpad", 4,
				 "ypad", 4,
				 NULL);
	column = gtk_tree_view_column_new_with_attributes ("Picture", renderer, "pixbuf", ACCOUNT_PICTURE, NULL);
	gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree), column);
	renderer = gtk_cell_renderer_text_new ();
	column = gtk_tree_view_column_new_with_attributes ("Name", renderer, "text", ACCOUNT_NAME, NULL);
	gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree), column);

	gtk_tree_view_set_model (priv->tree, GTK_TREE_MODEL (priv->store));
	selection = gtk_tree_view_get_selection (priv->tree);
	gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);
}

static void
proxy_update_tree_view (EAccount *account)
{
	proxyDialog *prd = NULL;
	GtkTreeIter iter;
	GdkPixbuf *broken_image = NULL;
	GList *list_iter;
	proxyHandler *aclInstance;
	gchar *file_name = e_icon_factory_get_icon_filename ("stock_person", GTK_ICON_SIZE_DIALOG);
	proxyDialogPrivate *priv;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	broken_image = gdk_pixbuf_new_from_file (file_name, NULL);

	gtk_tree_store_clear (priv->store);
	list_iter = priv->proxy_list;

	for (;list_iter; list_iter = g_list_next(list_iter)) {
		aclInstance = (proxyHandler *) list_iter->data;

		if (!(aclInstance->flags & E_GW_PROXY_DELETED )) {
			gtk_tree_store_append (priv->store, &iter, NULL);
			gtk_tree_store_set (priv->store, &iter, 0, broken_image, 1, g_strconcat(aclInstance->proxy_name,"\n",aclInstance->proxy_email, NULL), -1);
		}
	}

	g_free (file_name);
	if (broken_image)
		g_object_unref (broken_image);

	/*Fixme : Desensitize buttons if the list is Null*/
	gtk_tree_view_set_model (GTK_TREE_VIEW(priv->tree), GTK_TREE_MODEL (priv->store));
}

GtkWidget*
org_gnome_proxy (EPlugin *epl, EConfigHookItemFactoryData *data)
{
	EMConfigTargetAccount *target_account;
	EAccount *account;
	GtkButton *addProxy, *removeProxy, *editProxy;
	proxyDialog *prd;
	proxyDialogPrivate *priv;
	CamelOfflineStore *store;
	gint pag_num;

	target_account = (EMConfigTargetAccount *)data->config->target;
	account = target_account->account;
	/* We are using some g_object_set on this. We shuold also avoid double-free later. So reffing */
	g_object_ref (account);

	store = (CamelOfflineStore *) camel_session_get_service (
		session, e_account_get_string (account, E_ACCOUNT_SOURCE_URL),
		CAMEL_PROVIDER_STORE, NULL);
	if (store == NULL)
		return NULL;

	if (g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://"))
	{
		prd = proxy_dialog_new ();
		g_object_set_data_full ((GObject *) account, "prd", prd, (GDestroyNotify) g_object_unref);
		priv = prd->priv;

		priv->builder_tab = gtk_builder_new ();
		e_load_ui_builder_definition (priv->builder_tab, "proxy-listing.ui");

		if (account->enabled && (store->state == CAMEL_OFFLINE_STORE_NETWORK_AVAIL)) {
			priv->tab_dialog = GTK_WIDGET (e_builder_get_widget (priv->builder_tab, "proxy_vbox"));
			priv->tree = GTK_TREE_VIEW (e_builder_get_widget (priv->builder_tab, "proxy_access_list"));
			priv->store =  gtk_tree_store_new (2,
							   GDK_TYPE_PIXBUF,
							   G_TYPE_STRING
				);
			proxy_setup_meta_tree_view (account);

			addProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "add_proxy");
			removeProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "remove_proxy");
			editProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "edit_proxy");

			g_signal_connect (addProxy, "clicked", G_CALLBACK(proxy_add_account), account);
			g_signal_connect (removeProxy, "clicked", G_CALLBACK(proxy_remove_account), account);
			g_signal_connect (editProxy, "clicked", G_CALLBACK(proxy_edit_account), account);

			priv->proxy_list = NULL;
		} else if (account->enabled) {
			GtkWidget *label;
			priv->tab_dialog = gtk_vbox_new (TRUE, 10);
			/*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
			label = gtk_label_new (_("The Proxy tab will be available only when the account is online."));
			gtk_box_pack_start ((GtkBox *)priv->tab_dialog, label, TRUE, TRUE, 10);
		} else {
			GtkWidget *label;
			priv->tab_dialog = gtk_vbox_new (TRUE, 10);
			/*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
			label = gtk_label_new (_("The Proxy tab will be available only when the account is enabled."));
			gtk_box_pack_start ((GtkBox *)priv->tab_dialog, label, TRUE, TRUE, 10);
		}

		/*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
		gtk_notebook_append_page ((GtkNotebook *)(data->parent), (GtkWidget *)priv->tab_dialog, gtk_label_new (C_("GW", "Proxy")));
		g_signal_connect ((GtkNotebook *)(data->parent), "switch-page", G_CALLBACK (proxy_page_changed_cb), account);
		pag_num = gtk_notebook_page_num ((GtkNotebook *)(data->parent), (GtkWidget *)priv->tab_dialog);
		g_object_set_data ((GObject *) account, "proxy_tab_num", GINT_TO_POINTER (pag_num));
		gtk_widget_show_all (priv->tab_dialog);
	}  else if (!g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://")) {
		prd = g_object_get_data ((GObject *) account, "prd");

		if (prd) {
			priv = prd->priv;

			if (priv) {
				pag_num = gtk_notebook_page_num ( (GtkNotebook *)(data->parent), (GtkWidget *) priv->tab_dialog);
				gtk_notebook_remove_page ( (GtkNotebook *)(data->parent), pag_num);
			}
		}
	}

	g_object_unref (store);

	return NULL;
}

static gboolean
proxy_page_changed_cb (GtkNotebook *notebook, GtkNotebookPage *page, gint num, EAccount *account)
{
	proxyDialog *prd;
	proxyDialogPrivate *priv;
	gpointer val;
	gint pg_num;
	GList *list_iter;
	proxyHandler *aclInstance;

	if (g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://")) {

		prd = g_object_get_data ((GObject *) account, "prd");

		if (!prd || !prd->priv)
			return TRUE;

		val = g_object_get_data ((GObject *) account, "proxy_tab_num");

		if (!val)
			return FALSE;

		pg_num = GPOINTER_TO_INT (val);

		if ((pg_num == num) && account->enabled) {
			if (!prd->cnc)
				prd->cnc = proxy_get_cnc (account, GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (notebook))));
			priv = prd->priv;

			if (e_gw_connection_get_proxy_access_list(prd->cnc, &priv->proxy_list)!= E_GW_CONNECTION_STATUS_OK)
				return FALSE;

			list_iter = priv->proxy_list;

			for (;list_iter; list_iter = g_list_next(list_iter)) {
				aclInstance = (proxyHandler *) list_iter->data;

				/* NOTE: All User Access is not supported */
				if (!g_ascii_strcasecmp (aclInstance->proxy_name, "<All User Access>")) {
					priv->proxy_list = g_list_delete_link (priv->proxy_list, list_iter);
					break;
				}
			}

			proxy_update_tree_view (account);
			return TRUE;
		}
	}

	return FALSE;
}

static void
proxy_cancel(GtkWidget *button, EAccount *account)
{
	proxyDialog *prd = NULL;
	proxyDialogPrivate *priv;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	gtk_widget_destroy (priv->main);
	g_object_unref (priv->builder);
}

static void
proxy_add_ok (GtkWidget *button, EAccount *account)
{
	proxyDialog *prd = NULL;
	proxyDialogPrivate *priv;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;

	if (proxy_dialog_store_widgets_data (account, PROXY_ADD_DIALOG, GTK_WINDOW (gtk_widget_get_toplevel (button))) < 0)
		return;

	proxy_update_tree_view (account);
	gtk_widget_destroy (priv->main);
	g_object_unref (priv->builder);
}

static void
proxy_edit_ok (GtkWidget *button, EAccount *account)
{
	proxyDialog *prd = NULL;
	proxyDialogPrivate *priv;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;

	if ( proxy_dialog_store_widgets_data (account, PROXY_EDIT_DIALOG, GTK_WINDOW (gtk_widget_get_toplevel (button))) < 0)
		return;

	proxy_update_tree_view (account);
	gtk_widget_destroy (priv->main);
	g_object_unref (priv->builder);
}

static proxyHandler *
proxy_get_item_from_list (EAccount *account, gchar *account_name)
{
	proxyDialogPrivate *priv;
	proxyDialog *prd = NULL;
	GList *list_iter;
	proxyHandler *iter;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	list_iter = priv->proxy_list;

	for (;list_iter; list_iter = g_list_next(list_iter)) {
		iter = (proxyHandler *) list_iter->data;

		if ( g_str_equal (iter->proxy_email,account_name))
			return iter;
	}

	return NULL;
}

static void
proxy_remove_account (GtkWidget *button, EAccount *account)
{
	GtkTreeIter iter;
        GtkTreeModel *model;
	proxyDialogPrivate *priv;
	proxyHandler *deleted;
	GtkTreeSelection* account_select;
	gchar *account_mailid;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));

        if (gtk_tree_selection_get_selected (account_select, &model, &iter)) {
                gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
		account_mailid = g_strrstr (account_mailid, "\n") + 1;
		deleted = proxy_get_item_from_list (account, account_mailid);

		if (deleted != NULL)
			deleted->flags |= E_GW_PROXY_DELETED;

		proxy_update_tree_view (account);
        }
}

static void
addressbook_dialog_response (ENameSelectorDialog *name_selector_dialog, gint response, gpointer user_data)
{
	gtk_widget_hide (GTK_WIDGET (name_selector_dialog));
}

static void
addressbook_entry_changed (GtkWidget *entry, gpointer user_data)
{
}

static void
address_button_clicked (GtkButton *button, EAccount *account)
{
	proxyDialog *prd;
	proxyDialogPrivate *priv;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	e_name_selector_show_dialog (priv->proxy_name_selector, priv->main);
}

static void
proxy_add_account (GtkWidget *button, EAccount *account)
{
	GtkButton *contacts, *cancel;
	proxyDialogPrivate *priv;
	GtkButton *okButton;
	ENameSelectorDialog *name_selector_dialog;
	ENameSelectorModel *name_selector_model;
	ENameSelectorEntry *name_selector_entry;
	GtkWidget *proxy_name, *name_box;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;

	priv->builder = gtk_builder_new ();
	e_load_ui_builder_definition (priv->builder, "proxy-add-dialog.ui");

	proxy_dialog_initialize_widgets (account);
	priv->main = e_builder_get_widget (priv->builder, "ProxyAccessRights");
	okButton = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_button_ok");
	contacts = (GtkButton *) e_builder_get_widget (priv->builder,"contacts");
	cancel = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_cancel");

	priv->proxy_name_selector = e_name_selector_new ();
	name_selector_dialog = e_name_selector_peek_dialog (priv->proxy_name_selector);

	g_signal_connect ((GtkWidget *)okButton, "clicked", G_CALLBACK (proxy_add_ok), account);
	g_signal_connect ((GtkWidget *)cancel, "clicked", G_CALLBACK (proxy_cancel), account);
	g_signal_connect ((GtkWidget *)contacts, "clicked", G_CALLBACK (address_button_clicked), account);
	g_signal_connect (name_selector_dialog, "response", G_CALLBACK (addressbook_dialog_response), account);
	gtk_widget_show (GTK_WIDGET (priv->main));

	name_selector_model = e_name_selector_peek_model (priv->proxy_name_selector);
	e_name_selector_model_add_section (name_selector_model, "Add User", _("Add User"), NULL);

	name_selector_entry = e_name_selector_peek_section_entry (priv->proxy_name_selector, "Add User");
	g_signal_connect (name_selector_entry, "changed",
			  G_CALLBACK (addressbook_entry_changed), prd);

	proxy_name = e_builder_get_widget (priv->builder, "proxy_account_name");
	name_box = e_builder_get_widget (priv->builder, "proxy_name_box");
	gtk_widget_hide (proxy_name);
	gtk_container_add ((GtkContainer *)name_box, (GtkWidget *)name_selector_entry);
	gtk_widget_show ((GtkWidget *) name_selector_entry);
	gtk_widget_grab_focus ((GtkWidget *) name_selector_entry);
}

static void
proxy_load_edit_dialog (EAccount *account, proxyHandler *edited)
{
	proxyDialogPrivate *priv;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;
	gtk_entry_set_text ((GtkEntry *) priv->account_name, edited->proxy_email);
	gtk_widget_set_sensitive (priv->account_name, FALSE);

	if (edited->permissions & E_GW_PROXY_MAIL_READ)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->mail_read), TRUE);

	if (edited->permissions & E_GW_PROXY_MAIL_WRITE)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->mail_write), TRUE);

	if (edited->permissions & E_GW_PROXY_APPOINTMENT_READ)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->app_read), TRUE);

	if (edited->permissions & E_GW_PROXY_APPOINTMENT_WRITE)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->app_write), TRUE);

	if (edited->permissions & E_GW_PROXY_NOTES_READ)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->note_read), TRUE);

	if (edited->permissions & E_GW_PROXY_NOTES_WRITE)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->note_write), TRUE);

	if (edited->permissions & E_GW_PROXY_TASK_READ)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->task_read), TRUE);

	if (edited->permissions & E_GW_PROXY_TASK_WRITE)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->task_write), TRUE);

	if (edited->permissions & E_GW_PROXY_GET_ALARMS)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->alarms), TRUE);

	if (edited->permissions & E_GW_PROXY_GET_NOTIFICATIONS)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->notifications), TRUE);

	if (edited->permissions & E_GW_PROXY_MODIFY_FOLDERS)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->options), TRUE);

	if (edited->permissions & E_GW_PROXY_READ_PRIVATE)
		gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (priv->private), TRUE);
}

static void
proxy_edit_account (GtkWidget *button, EAccount *account)
{
	GtkTreeIter iter;
        GtkTreeModel *model;
	proxyDialogPrivate *priv;
	GtkTreeSelection* account_select;
	proxyHandler *edited;
	GtkButton *okButton, *proxyCancel;
	gchar *account_mailid;
	GtkWidget *contacts;
	proxyDialog *prd = NULL;

	prd = g_object_get_data ((GObject *)account, "prd");
	priv = prd->priv;

	/*FIXME: If multiple properties dialogs are launched then the widgets lose data*/

	account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));

        if (gtk_tree_selection_get_selected (account_select, &model, &iter)) {
                gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
		account_mailid = g_strrstr (account_mailid, "\n") + 1;
		edited = proxy_get_item_from_list (account, account_mailid);
		if (edited) {
			priv->builder = gtk_builder_new ();
			e_load_ui_builder_definition (priv->builder, "proxy-add-dialog.ui");

			priv->main = e_builder_get_widget (priv->builder, "ProxyAccessRights");
			proxy_dialog_initialize_widgets (account);
			okButton = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_button_ok");
			proxyCancel = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_cancel");
			contacts = e_builder_get_widget (priv->builder, "contacts");

			g_signal_connect ((GtkWidget *)okButton, "clicked", G_CALLBACK (proxy_edit_ok), account);
			g_signal_connect ((GtkWidget *)proxyCancel, "clicked", G_CALLBACK (proxy_cancel), account);
			proxy_load_edit_dialog (account, edited);
			gtk_widget_hide (contacts);
			gtk_widget_show (GTK_WIDGET (priv->main));
		}
        }
}