Memo Component - submitted by Nathan Owens <pianocomp81@yahoo.com>

2005-10-19 Harish Krishnaswamy <kharish@novell.com>

Memo Component - submitted by Nathan Owens <pianocomp81@yahoo.com>

svn path=/trunk/; revision=30537

1 files changed, 1174 insertions, 0 deletions

diff --git a/calendar/gui/e-memos.c b/calendar/gui/e-memos.c
new file mode 100644
index 0000000000..5825af0a43
--- /dev/null
+++ b/calendar/gui/e-memos.c
@@ -0,0 +1,1174 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-memos.c
+ *
+ * Copyright (C) 2001-2003  Ximian, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * Authors: Federico Mena Quintero <federico@ximian.com>
+ *	    Damon Chaplin <damon@ximian.com>
+ *          Rodrigo Moya <rodrigo@ximian.com>
+ *          Nathan Owens <pianocomp81@yahoo.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gnome.h>
+#include <libgnomevfs/gnome-vfs-ops.h>
+#include <table/e-table-scrolled.h>
+#include <widgets/menus/gal-view-instance.h>
+#include <widgets/menus/gal-view-factory-etable.h>
+#include <widgets/menus/gal-view-etable.h>
+
+#include "e-util/e-error.h"
+#include "e-util/e-categories-config.h"
+#include "e-util/e-config-listener.h"
+#include "e-util/e-time-utils.h"
+#include "shell/e-user-creatable-items-handler.h"
+#include <libecal/e-cal-time-util.h>
+#include <libedataserver/e-url.h>
+#include <libedataserver/e-categories.h>
+#include "widgets/menus/gal-view-menus.h"
+#include "dialogs/delete-error.h"
+#include "e-calendar-marshal.h"
+#include "calendar-config.h"
+#include "cal-search-bar.h"
+#include "calendar-component.h"
+#include "comp-util.h"
+#include "e-memo-table-config.h"
+#include "misc.h"
+#include "memos-component.h"
+#include "e-cal-component-memo-preview.h"
+#include "e-memos.h"
+#include "common/authentication.h"
+
+
+/* Private part of the GnomeCalendar structure */
+struct _EMemosPrivate {
+	/* The memo lists for display */
+	GHashTable *clients;
+	GList *clients_list;
+	ECal *default_client;
+
+	ECalView *query;
+	
+	EConfigListener *config_listener;
+	
+	/* The EMemoTable showing the memos. */
+	GtkWidget   *memos_view;
+	EMemoTableConfig *memos_view_config;
+	
+	/* Calendar search bar for memos */
+	GtkWidget *search_bar;
+
+	/* Paned widget */
+	GtkWidget *paned;
+
+	/* The preview */
+	GtkWidget *preview;
+	
+	gchar *current_uid;
+	char *sexp;
+	guint update_timeout;
+	
+	/* View instance and the view menus handler */
+	GalViewInstance *view_instance;
+	GalViewMenus *view_menus;
+
+	GList *notifications;
+};
+
+static void setup_widgets (EMemos *memos);
+static void e_memos_destroy (GtkObject *object);
+static void update_view (EMemos *memos);
+
+static void config_categories_changed_cb (EConfigListener *config_listener, const char *key, gpointer user_data);
+static void backend_error_cb (ECal *client, const char *message, gpointer data);
+
+/* Signal IDs */
+enum {
+	SELECTION_CHANGED,
+	SOURCE_ADDED,
+	SOURCE_REMOVED,
+	LAST_SIGNAL
+};
+
+enum DndTargetType {
+	TARGET_VCALENDAR
+};
+
+static GtkTargetEntry list_drag_types[] = {
+	{ "text/calendar",                0, TARGET_VCALENDAR },
+	{ "text/x-calendar",              0, TARGET_VCALENDAR }
+};
+static const int num_list_drag_types = sizeof (list_drag_types) / sizeof (list_drag_types[0]);
+
+static guint e_memos_signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (EMemos, e_memos, GTK_TYPE_TABLE);
+
+/* Callback used when the cursor changes in the table */
+static void
+table_cursor_change_cb (ETable *etable, int row, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+	ECalModel *model;
+	ECalModelComponent *comp_data;
+	ECalComponent *comp;
+	const char *uid;
+
+	int n_selected;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	n_selected = e_table_selected_count (etable);
+	
+	/* update the HTML widget */
+	if (n_selected != 1) {
+		e_cal_component_memo_preview_clear (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview));
+
+		return;
+	}
+	
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+	
+	comp_data = e_cal_model_get_component_at (model, e_table_get_cursor_row (etable));
+	comp = e_cal_component_new ();
+	e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (comp_data->icalcomp));
+
+	e_cal_component_memo_preview_display (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview), comp_data->client, comp);
+	
+	e_cal_component_get_uid (comp, &uid);
+	if (priv->current_uid)
+		g_free (priv->current_uid);
+	priv->current_uid = g_strdup (uid);
+	
+	g_object_unref (comp);
+}
+
+/* Callback used when the selection changes in the table. */
+static void
+table_selection_change_cb (ETable *etable, gpointer data)
+{
+	EMemos *memos;
+	int n_selected;
+
+	memos = E_MEMOS (data);
+
+	n_selected = e_table_selected_count (etable);
+	gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SELECTION_CHANGED],
+			 n_selected);
+}
+
+static void
+user_created_cb (GtkWidget *view, EMemos *memos)
+{
+	EMemosPrivate *priv;	
+	ECal *ecal;
+	ECalModel *model;
+	
+	priv = memos->priv;
+
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+	ecal = e_cal_model_get_default_client (model);
+
+	e_memos_add_memo_source (memos, e_cal_get_source (ecal));
+}
+
+/* Callback used when the sexp in the search bar changes */
+static void
+search_bar_sexp_changed_cb (CalSearchBar *cal_search, const char *sexp, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	if (priv->sexp)
+		g_free (priv->sexp);
+	
+	priv->sexp = g_strdup (sexp);
+	
+	update_view (memos);
+}
+
+/* Callback used when the selected category in the search bar changes */
+static void
+search_bar_category_changed_cb (CalSearchBar *cal_search, const char *category, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+	ECalModel *model;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+	e_cal_model_set_default_category (model, category);
+}
+
+static gboolean
+vpaned_resized_cb (GtkWidget *widget, GdkEventButton *event, EMemos *memos)
+{
+	calendar_config_set_task_vpane_pos (gtk_paned_get_position (GTK_PANED (widget)));
+
+	return FALSE;
+}
+
+static void
+set_timezone (EMemos *memos) 
+{
+	EMemosPrivate *priv;
+	icaltimezone *zone;
+	GList *l;
+	
+	priv = memos->priv;
+	
+	zone = calendar_config_get_icaltimezone ();
+	for (l = priv->clients_list; l != NULL; l = l->next) {
+		ECal *client = l->data;
+
+		if (e_cal_get_load_state (client) == E_CAL_LOAD_LOADED)
+			/* FIXME Error checking */
+			e_cal_set_default_timezone (client, zone, NULL);
+	}
+
+	if (priv->default_client && e_cal_get_load_state (priv->default_client) == E_CAL_LOAD_LOADED)
+		/* FIXME Error checking */
+		e_cal_set_default_timezone (priv->default_client, zone, NULL);
+
+	if (priv->preview)
+		e_cal_component_memo_preview_set_default_timezone (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview), zone);
+}
+
+static void
+timezone_changed_cb (GConfClient *client, guint id, GConfEntry *entry, gpointer data)
+{
+	EMemos *memos = data;
+	
+	set_timezone (memos);
+}
+
+static void
+update_view (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	ECalModel *model;
+	char *real_sexp = NULL;
+	char *new_sexp = NULL;
+	
+	priv = memos->priv;
+
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+		
+	e_cal_model_set_search_query (model, priv->sexp);
+	
+	e_cal_component_memo_preview_clear (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview));
+}
+
+static gboolean
+update_view_cb (EMemos *memos)
+{	
+	update_view (memos);
+
+	return TRUE;
+}
+
+static void
+model_row_changed_cb (ETableModel *etm, int row, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+	ECalModelComponent *comp_data;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	if (priv->current_uid) {
+		const char *uid;
+
+		comp_data = e_cal_model_get_component_at (E_CAL_MODEL (etm), row);
+		if (comp_data) {
+			uid = icalcomponent_get_uid (comp_data->icalcomp);
+			if (!strcmp (uid ? uid : "", priv->current_uid)) {
+				ETable *etable;
+
+				etable = e_table_scrolled_get_table (
+					E_TABLE_SCROLLED (E_MEMO_TABLE (priv->memos_view)->etable));
+				table_cursor_change_cb (etable, 0, memos);
+			}
+		}
+	}
+}
+
+static void
+setup_config (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	guint not;
+
+	priv = memos->priv;
+	
+	/* Timezone */
+	set_timezone (memos);
+	
+	not = calendar_config_add_notification_timezone (timezone_changed_cb, memos);
+	priv->notifications = g_list_prepend (priv->notifications, GUINT_TO_POINTER (not));
+}
+
+static void
+table_drag_data_get (ETable             *table,
+		     int                 row,
+		     int                 col,
+		     GdkDragContext     *context,
+		     GtkSelectionData   *selection_data,
+		     guint               info,
+		     guint               time,
+		     EMemos             *memos)
+{
+	EMemosPrivate *priv;
+	ECalModelComponent *comp_data;
+
+	priv = memos->priv;
+
+	if (priv->current_uid) {
+		ECalModel *model;
+
+		model = e_memo_table_get_model (
+			E_MEMO_TABLE (priv->memos_view));
+
+		comp_data = e_cal_model_get_component_at (model, row);
+
+		if (info == TARGET_VCALENDAR) {
+			/* we will pass an icalcalendar component for both types */
+			char *comp_str;
+			icalcomponent *vcal;
+		
+			vcal = e_cal_util_new_top_level ();
+			e_cal_util_add_timezones_from_component (vcal, comp_data->icalcomp);
+			icalcomponent_add_component (
+			        vcal,
+				icalcomponent_new_clone (comp_data->icalcomp));
+
+			comp_str = icalcomponent_as_ical_string (vcal);
+			if (comp_str) {
+				gtk_selection_data_set (selection_data, selection_data->target,
+							8, comp_str, strlen (comp_str));
+			}
+			icalcomponent_free (vcal);
+		}
+	}
+}
+
+static void 
+table_drag_data_delete (ETable         *table,
+			int             row,
+			int             col,
+			GdkDragContext *context,
+			EMemos         *memos)
+{
+	EMemosPrivate *priv;
+	ECalModelComponent *comp_data;
+	ECalModel *model;
+	gboolean read_only = TRUE;
+	
+	priv = memos->priv;
+	
+	model = e_memo_table_get_model (
+		E_MEMO_TABLE (priv->memos_view));
+	comp_data = e_cal_model_get_component_at (model, row);
+
+	e_cal_is_read_only (comp_data->client, &read_only, NULL);
+	if (read_only)
+		return;
+
+	e_cal_remove_object (comp_data->client, icalcomponent_get_uid (comp_data->icalcomp), NULL);
+}
+
+#define E_MEMOS_TABLE_DEFAULT_STATE					\
+	"<?xml version=\"1.0\"?>"					\
+	"<ETableState>"							\
+	"<column source=\"1\"/>"					\
+	"<column source=\"0\"/>"					\
+	"<column source=\"2\"/>"					\
+	"<grouping></grouping>"						\
+	"</ETableState>"
+
+static void
+pane_realized (GtkWidget *widget, EMemos *memos)
+{
+	gtk_paned_set_position ((GtkPaned *)widget, calendar_config_get_task_vpane_pos ());
+}
+
+static void
+setup_widgets (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	ETable *etable;
+	ECalModel *model;
+
+	priv = memos->priv;
+
+	priv->search_bar = cal_search_bar_new (CAL_SEARCH_TASKS_DEFAULT);
+	g_signal_connect (priv->search_bar, "sexp_changed",
+			  G_CALLBACK (search_bar_sexp_changed_cb), memos);
+	g_signal_connect (priv->search_bar, "category_changed",
+			  G_CALLBACK (search_bar_category_changed_cb), memos);
+	
+	/* TODO Why doesn't this work?? */
+	config_categories_changed_cb (priv->config_listener, "/apps/evolution/general/category_master_list", memos);
+
+	gtk_table_attach (GTK_TABLE (memos), priv->search_bar, 0, 1, 0, 1,
+			  GTK_EXPAND | GTK_FILL | GTK_SHRINK, 0, 0, 0);
+	gtk_widget_show (priv->search_bar);
+
+	/* add the paned widget for the memo list and memo detail areas */
+	priv->paned = gtk_vpaned_new ();
+	g_signal_connect (priv->paned, "realize", G_CALLBACK (pane_realized), memos);
+
+	g_signal_connect (G_OBJECT (priv->paned), "button_release_event",
+			  G_CALLBACK (vpaned_resized_cb), memos);
+	gtk_table_attach (GTK_TABLE (memos), priv->paned, 0, 1, 1, 2,
+			  GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
+	gtk_widget_show (priv->paned);
+
+	/* create the memo list */
+	priv->memos_view = e_memo_table_new ();
+	priv->memos_view_config = e_memo_table_config_new (E_MEMO_TABLE (priv->memos_view));
+	
+	g_signal_connect (priv->memos_view, "user_created", G_CALLBACK (user_created_cb), memos);
+
+	etable = e_table_scrolled_get_table (
+		E_TABLE_SCROLLED (E_MEMO_TABLE (priv->memos_view)->etable));
+	e_table_set_state (etable, E_MEMOS_TABLE_DEFAULT_STATE);
+	
+	gtk_paned_add1 (GTK_PANED (priv->paned), priv->memos_view);
+	gtk_widget_show (priv->memos_view);
+
+
+	e_table_drag_source_set (etable, GDK_BUTTON1_MASK,
+				 list_drag_types, num_list_drag_types,
+				 GDK_ACTION_MOVE|GDK_ACTION_COPY|GDK_ACTION_ASK);
+	
+	g_signal_connect (etable, "table_drag_data_get",
+			  G_CALLBACK(table_drag_data_get), memos);
+	g_signal_connect (etable, "table_drag_data_delete",
+			  G_CALLBACK(table_drag_data_delete), memos);
+
+	g_signal_connect (etable, "cursor_change", G_CALLBACK (table_cursor_change_cb), memos);
+	g_signal_connect (etable, "selection_change", G_CALLBACK (table_selection_change_cb), memos);
+
+	/* Timeout check to hide completed items */
+	priv->update_timeout = g_timeout_add_full (G_PRIORITY_LOW, 60000, (GSourceFunc) update_view_cb, memos, NULL);
+
+	/* create the memo detail */
+	priv->preview = e_cal_component_memo_preview_new ();
+	e_cal_component_memo_preview_set_default_timezone (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview), calendar_config_get_icaltimezone ());
+	gtk_paned_add2 (GTK_PANED (priv->paned), priv->preview);
+	gtk_widget_show (priv->preview);
+
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+	g_signal_connect (G_OBJECT (model), "model_row_changed",
+			  G_CALLBACK (model_row_changed_cb), memos);
+}
+
+/* Class initialization function for the gnome calendar */
+static void
+e_memos_class_init (EMemosClass *klass)
+{
+	GtkObjectClass *object_class;
+
+	object_class = (GtkObjectClass *) klass;
+
+	e_memos_signals[SELECTION_CHANGED] =
+		gtk_signal_new ("selection_changed",
+				GTK_RUN_LAST,
+				G_TYPE_FROM_CLASS (object_class), 
+				GTK_SIGNAL_OFFSET (EMemosClass, selection_changed),
+				gtk_marshal_NONE__INT,
+				GTK_TYPE_NONE, 1,
+				GTK_TYPE_INT);
+
+	e_memos_signals[SOURCE_ADDED] =
+		g_signal_new ("source_added",
+			      G_TYPE_FROM_CLASS (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (EMemosClass, source_added),
+			      NULL, NULL,
+			      e_calendar_marshal_VOID__OBJECT,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_OBJECT);
+
+	e_memos_signals[SOURCE_REMOVED] =
+		g_signal_new ("source_removed",
+			      G_TYPE_FROM_CLASS (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (EMemosClass, source_removed),
+			      NULL, NULL,
+			      e_calendar_marshal_VOID__OBJECT,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_OBJECT);
+
+	object_class->destroy = e_memos_destroy;
+
+	klass->selection_changed = NULL;
+	klass->source_added = NULL;
+	klass->source_removed = NULL;
+}
+
+
+static void
+config_categories_changed_cb (EConfigListener *config_listener, const char *key, gpointer user_data)
+{
+	GList *cat_list;
+	GPtrArray *cat_array;
+	EMemosPrivate *priv;
+	EMemos *memos = user_data;
+
+	priv = memos->priv;
+
+	cat_array = g_ptr_array_new ();
+	cat_list = e_categories_get_list ();
+	while (cat_list != NULL) {
+		if (e_categories_is_searchable ((const char *) cat_list->data))
+			g_ptr_array_add (cat_array, cat_list->data);
+		cat_list = g_list_remove (cat_list, cat_list->data);
+	}
+
+	cal_search_bar_set_categories (CAL_SEARCH_BAR(priv->search_bar), cat_array);
+
+	g_ptr_array_free (cat_array, TRUE);
+}
+
+/* Object initialization function for the gnome calendar */
+static void
+e_memos_init (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	
+	priv = g_new0 (EMemosPrivate, 1);
+	memos->priv = priv;
+
+	setup_config (memos);
+	setup_widgets (memos);
+	
+	priv->config_listener = e_config_listener_new ();
+	g_signal_connect (priv->config_listener, "key_changed", G_CALLBACK (config_categories_changed_cb), memos);
+
+	priv->clients = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);	
+	priv->query = NULL;
+	priv->view_instance = NULL;
+	priv->view_menus = NULL;
+	priv->current_uid = NULL;
+	priv->sexp = g_strdup ("#t");
+	priv->default_client = NULL;
+	update_view (memos);
+}
+
+/* Callback used when the set of categories changes in the calendar client */
+/* TODO this was actually taken out of tasks in 2.3.x
+ *      config_categories doesn't work, but this may - trying with memos*/
+/*
+static void
+client_categories_changed_cb (ECal *client, GPtrArray *categories, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	cal_search_bar_set_categories (CAL_SEARCH_BAR (priv->search_bar), categories);
+}
+*/
+
+GtkWidget *
+e_memos_new (void)
+{
+	EMemos *memos;
+
+	memos = g_object_new (e_memos_get_type (), NULL);
+
+	return GTK_WIDGET (memos);
+}
+
+
+void
+e_memos_set_ui_component (EMemos *memos,
+			  BonoboUIComponent *ui_component)
+{
+	g_return_if_fail (E_IS_MEMOS (memos));
+	g_return_if_fail (ui_component == NULL || BONOBO_IS_UI_COMPONENT (ui_component));
+
+	e_search_bar_set_ui_component (E_SEARCH_BAR (memos->priv->search_bar), ui_component);
+}
+
+
+static void
+e_memos_destroy (GtkObject *object)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+
+	g_return_if_fail (object != NULL);
+	g_return_if_fail (E_IS_MEMOS (object));
+
+	memos = E_MEMOS (object);
+	priv = memos->priv;
+
+	if (priv) {
+		GList *l;
+
+		/* unset the config listener */
+		if (priv->config_listener) {
+			g_signal_handlers_disconnect_matched (priv->config_listener,
+							      G_SIGNAL_MATCH_DATA,
+							      0, 0, NULL, NULL, memos);
+			g_object_unref (priv->config_listener);
+			priv->config_listener = NULL;
+		}
+		
+		/* disconnect from signals on all the clients */
+		for (l = priv->clients_list; l != NULL; l = l->next) {
+			g_signal_handlers_disconnect_matched (l->data, G_SIGNAL_MATCH_DATA,
+							      0, 0, NULL, NULL, memos);
+		}
+
+		g_hash_table_destroy (priv->clients);
+		g_list_free (priv->clients_list);
+
+		if (priv->default_client)
+			g_object_unref (priv->default_client);
+		priv->default_client = NULL;
+
+		if (priv->current_uid) {
+			g_free (priv->current_uid);
+			priv->current_uid = NULL;
+		}
+	
+		if (priv->sexp) {
+			g_free (priv->sexp);
+			priv->sexp = NULL;
+		}
+
+		if (priv->update_timeout) {
+			g_source_remove (priv->update_timeout);
+			priv->update_timeout = 0;
+		}
+	
+		if (priv->memos_view_config) {
+			g_object_unref (priv->memos_view_config);
+			priv->memos_view_config = NULL;
+		}
+		
+		for (l = priv->notifications; l; l = l->next)
+			calendar_config_remove_notification (GPOINTER_TO_UINT (l->data));
+		priv->notifications = NULL;
+
+		g_free (priv);
+		memos->priv = NULL;
+	}
+
+	if (GTK_OBJECT_CLASS (e_memos_parent_class)->destroy)
+		(* GTK_OBJECT_CLASS (e_memos_parent_class)->destroy) (object);
+}
+
+static void
+set_status_message (EMemos *memos, const char *message, ...)
+{
+	EMemosPrivate *priv;
+	va_list args;
+	char sz[2048], *msg_string = NULL;
+
+	if (message) {
+		va_start (args, message);
+		vsnprintf (sz, sizeof sz, message, args);
+		va_end (args);
+		msg_string = sz;
+	}
+
+	priv = memos->priv;
+	
+	e_memo_table_set_status_message (E_MEMO_TABLE (priv->memos_view), msg_string);
+}
+
+/* Callback from the calendar client when an error occurs in the backend */
+static void
+backend_error_cb (ECal *client, const char *message, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+	char *errmsg;
+	char *urinopwd;
+
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	urinopwd = get_uri_without_password (e_cal_get_uri (client));
+	errmsg = g_strdup_printf (_("Error on %s:\n %s"), urinopwd, message);
+	gnome_error_dialog_parented (errmsg, GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (memos))));
+	g_free (errmsg);
+	g_free (urinopwd);
+}
+
+/* Callback from the calendar client when the backend dies */
+static void
+backend_died_cb (ECal *client, gpointer data)
+{
+	EMemos *memos;
+	EMemosPrivate *priv;
+	ESource *source;
+	
+	memos = E_MEMOS (data);
+	priv = memos->priv;
+
+	source = g_object_ref (e_cal_get_source (client));
+
+	priv->clients_list = g_list_remove (priv->clients_list, client);
+	g_hash_table_remove (priv->clients,  e_source_peek_uid (source));
+
+	gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SOURCE_REMOVED], source);
+
+	e_memo_table_set_status_message (E_MEMO_TABLE (e_memos_get_calendar_table (memos)), NULL);
+	
+	e_error_run (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (memos))),
+		     "calendar:memos-crashed", NULL);
+	
+	g_object_unref (source);
+}
+
+/* Callback from the calendar client when the calendar is opened */
+static void
+client_cal_opened_cb (ECal *ecal, ECalendarStatus status, EMemos *memos)
+{
+	ECalModel *model;
+	ESource *source;
+	EMemosPrivate *priv;
+
+	priv = memos->priv;
+
+	source = e_cal_get_source (ecal);
+
+	switch (status) {
+	case E_CALENDAR_STATUS_OK :
+		g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, client_cal_opened_cb, NULL);
+
+		set_status_message (memos, _("Loading memos"));
+		model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+		e_cal_model_add_client (model, ecal);
+
+		set_timezone (memos);
+		set_status_message (memos, NULL);
+		break;
+	case E_CALENDAR_STATUS_BUSY :
+		break;
+	case E_CALENDAR_STATUS_REPOSITORY_OFFLINE:
+		e_error_run (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (memos))), "calendar:prompt-no-contents-offline-memos", NULL);
+		break;
+	default :
+		/* Make sure the source doesn't disappear on us */
+		g_object_ref (source);
+
+		priv->clients_list = g_list_remove (priv->clients_list, ecal);
+		g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_DATA,
+						      0, 0, NULL, NULL, memos);
+
+		/* Do this last because it unrefs the client */
+		g_hash_table_remove (priv->clients,  e_source_peek_uid (source));
+
+		gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SOURCE_REMOVED], source);
+
+		set_status_message (memos, NULL);
+		g_object_unref (source);
+
+		break;
+	}
+}
+
+static void
+default_client_cal_opened_cb (ECal *ecal, ECalendarStatus status, EMemos *memos)
+{
+	ECalModel *model;
+	ESource *source;
+	EMemosPrivate *priv;
+
+	priv = memos->priv;
+
+	source = e_cal_get_source (ecal);
+
+	switch (status) {
+	case E_CALENDAR_STATUS_OK :
+		g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, default_client_cal_opened_cb, NULL);
+		model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+		
+		set_timezone (memos);
+		e_cal_model_set_default_client (model, ecal);
+		set_status_message (memos, NULL);
+		break;
+	case E_CALENDAR_STATUS_BUSY:
+		break;
+	default :
+		/* Make sure the source doesn't disappear on us */
+		g_object_ref (source);
+
+		priv->clients_list = g_list_remove (priv->clients_list, ecal);
+		g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_DATA,
+						      0, 0, NULL, NULL, memos);
+
+		/* Do this last because it unrefs the client */
+		g_hash_table_remove (priv->clients,  e_source_peek_uid (source));
+
+		gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SOURCE_REMOVED], source);
+
+		set_status_message (memos, NULL);
+		g_object_unref (priv->default_client);
+		priv->default_client = NULL;
+		g_object_unref (source);
+
+		break;
+	}
+}
+
+typedef void (*open_func) (ECal *, ECalendarStatus, EMemos *);
+
+static gboolean
+open_ecal (EMemos *memos, ECal *cal, gboolean only_if_exists, open_func of)
+{
+	EMemosPrivate *priv;
+
+	priv = memos->priv;
+	
+	set_status_message (memos, _("Opening memos at %s"), e_cal_get_uri (cal));
+
+	g_signal_connect (G_OBJECT (cal), "cal_opened", G_CALLBACK (of), memos);
+	e_cal_open_async (cal, only_if_exists);
+
+	return TRUE;
+}
+
+void
+e_memos_open_memo			(EMemos		*memos)
+{
+	EMemoTable *cal_table;
+                                                                                
+	cal_table = e_memos_get_calendar_table (memos);
+	e_memo_table_open_selected (cal_table);
+}
+
+void
+e_memos_new_memo (EMemos *memos)
+{
+	/* used for click_to_add ?? Can't figure out anything else it's used for */
+}
+
+gboolean
+e_memos_add_memo_source (EMemos *memos, ESource *source)
+{
+	EMemosPrivate *priv;
+	ECal *client;
+	const char *uid;
+
+	g_return_val_if_fail (memos != NULL, FALSE);
+	g_return_val_if_fail (E_IS_MEMOS (memos), FALSE);
+	g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
+
+	priv = memos->priv;
+
+	uid = e_source_peek_uid (source);
+	client = g_hash_table_lookup (priv->clients, uid);
+	if (client) {
+		/* We already have it */
+
+		return TRUE;
+	} else {
+		ESource *default_source;
+		
+		if (priv->default_client) {
+			default_source = e_cal_get_source (priv->default_client);
+		
+			/* We don't have it but the default client is it */
+			if (!strcmp (e_source_peek_uid (default_source), uid))
+				client = g_object_ref (priv->default_client);
+		}
+
+		/* Create a new one */
+		if (!client) {
+			client = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_JOURNAL);
+			if (!client)
+				return FALSE;
+		}
+	}
+
+	g_signal_connect (G_OBJECT (client), "backend_error", G_CALLBACK (backend_error_cb), memos);
+/*	g_signal_connect (G_OBJECT (client), "categories_changed", G_CALLBACK (client_categories_changed_cb), memos); */
+	g_signal_connect (G_OBJECT (client), "backend_died", G_CALLBACK (backend_died_cb), memos);
+
+	/* add the client to internal structure */	
+	g_hash_table_insert (priv->clients, g_strdup (uid) , client);
+	priv->clients_list = g_list_prepend (priv->clients_list, client);
+
+	gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SOURCE_ADDED], source);
+
+	open_ecal (memos, client, FALSE, client_cal_opened_cb);
+
+	return TRUE;
+}
+
+gboolean
+e_memos_remove_memo_source (EMemos *memos, ESource *source)
+{
+	EMemosPrivate *priv;
+	ECal *client;
+	ECalModel *model;
+	const char *uid;
+
+	g_return_val_if_fail (memos != NULL, FALSE);
+	g_return_val_if_fail (E_IS_MEMOS (memos), FALSE);
+	g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
+
+	priv = memos->priv;
+
+	uid = e_source_peek_uid (source);
+	client = g_hash_table_lookup (priv->clients, uid);
+	if (!client) 
+		return TRUE;
+	
+
+	priv->clients_list = g_list_remove (priv->clients_list, client);
+	g_signal_handlers_disconnect_matched (client, G_SIGNAL_MATCH_DATA,
+					      0, 0, NULL, NULL, memos);	
+
+	model = e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view));
+	e_cal_model_remove_client (model, client);
+
+	g_hash_table_remove (priv->clients, uid);
+       
+
+	gtk_signal_emit (GTK_OBJECT (memos), e_memos_signals[SOURCE_REMOVED], source);
+
+	return TRUE;
+}
+
+gboolean
+e_memos_set_default_source (EMemos *memos, ESource *source)
+{
+	EMemosPrivate *priv;
+	ECal *ecal;
+	
+	g_return_val_if_fail (memos != NULL, FALSE);
+	g_return_val_if_fail (E_IS_MEMOS (memos), FALSE);
+	g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
+
+	priv = memos->priv;
+
+	ecal = g_hash_table_lookup (priv->clients, e_source_peek_uid (source));
+
+	if (priv->default_client)
+		g_object_unref (priv->default_client);
+
+	if (ecal) {
+		priv->default_client = g_object_ref (ecal);
+	} else {
+		priv->default_client = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_JOURNAL);
+		if (!priv->default_client)
+			return FALSE;
+	}
+
+	open_ecal (memos, priv->default_client, FALSE, default_client_cal_opened_cb);
+
+	return TRUE;
+}
+
+ECal *
+e_memos_get_default_client (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	
+	g_return_val_if_fail (memos != NULL, NULL);
+	g_return_val_if_fail (E_IS_MEMOS (memos), NULL);
+
+	priv = memos->priv;
+
+	return e_cal_model_get_default_client (e_memo_table_get_model (E_MEMO_TABLE (priv->memos_view)));	
+}
+
+
+/**
+ * e_memos_delete_selected:
+ * @memos: A memos control widget.
+ * 
+ * Deletes the selected memos in the memo list.
+ **/
+void
+e_memos_delete_selected (EMemos *memos)
+{
+	EMemosPrivate *priv;
+	EMemoTable *cal_table;
+
+	g_return_if_fail (memos != NULL);
+	g_return_if_fail (E_IS_MEMOS (memos));
+
+	priv = memos->priv;
+
+	cal_table = E_MEMO_TABLE (priv->memos_view);
+	set_status_message (memos, _("Deleting selected objects..."));
+	e_memo_table_delete_selected (cal_table);
+	set_status_message (memos, NULL);
+
+	e_cal_component_memo_preview_clear (E_CAL_COMPONENT_MEMO_PREVIEW (priv->preview));
+}
+
+
+/* Callback used from the view collection when we need to display a new view */
+static void
+display_view_cb (GalViewInstance *instance, GalView *view, gpointer data)
+{
+	EMemos *memos;
+
+	memos = E_MEMOS (data);
+
+	if (GAL_IS_VIEW_ETABLE (view)) {
+		gal_view_etable_attach_table (GAL_VIEW_ETABLE (view), e_table_scrolled_get_table (E_TABLE_SCROLLED (E_MEMO_TABLE (memos->priv->memos_view)->etable)));
+	}
+
+	gtk_paned_set_position ((GtkPaned *)memos->priv->paned, calendar_config_get_task_vpane_pos ());
+}
+
+/**
+ * e_memos_setup_view_menus:
+ * @memos: A memos widget.
+ * @uic: UI controller to use for the menus.
+ * 
+ * Sets up the #GalView menus for a memos control.  This function should be
+ * called from the Bonobo control activation callback for this memos control.
+ * Also, the menus should be discarded using e_memos_discard_view_menus().
+ */
+void
+e_memos_setup_view_menus (EMemos *memos, BonoboUIComponent *uic)
+{
+	EMemosPrivate *priv;
+	GalViewFactory *factory;
+	ETableSpecification *spec;
+	char *dir;
+	static GalViewCollection *collection = NULL;
+
+	g_return_if_fail (memos != NULL);
+	g_return_if_fail (E_IS_MEMOS (memos));
+	g_return_if_fail (uic != NULL);
+	g_return_if_fail (BONOBO_IS_UI_COMPONENT (uic));
+
+	priv = memos->priv;
+
+	g_return_if_fail (priv->view_instance == NULL);
+
+	g_assert (priv->view_instance == NULL);
+	g_assert (priv->view_menus == NULL);
+
+	/* Create the view instance */
+
+	if (collection == NULL) {
+		collection = gal_view_collection_new ();
+
+		gal_view_collection_set_title (collection, _("Memos"));
+
+		dir = g_build_filename (memos_component_peek_base_directory (memos_component_peek ()), 
+					"memos", "views", NULL);
+	
+		gal_view_collection_set_storage_directories (collection,
+							     EVOLUTION_GALVIEWSDIR "/memos/",
+							     dir);
+		g_free (dir);
+
+		/* Create the views */
+
+		spec = e_table_specification_new ();
+		e_table_specification_load_from_file (spec, 
+						      EVOLUTION_ETSPECDIR "/e-memo-table.etspec");
+
+		factory = gal_view_factory_etable_new (spec);
+		g_object_unref (spec);
+		gal_view_collection_add_factory (collection, factory);
+		g_object_unref (factory);
+
+		/* Load the collection and create the menus */
+
+		gal_view_collection_load (collection);
+	}
+
+	priv->view_instance = gal_view_instance_new (collection, NULL);
+
+	priv->view_menus = gal_view_menus_new (priv->view_instance);
+	gal_view_menus_apply (priv->view_menus, uic, NULL);
+	g_signal_connect (priv->view_instance, "display_view", G_CALLBACK (display_view_cb), memos);
+	display_view_cb (priv->view_instance, gal_view_instance_get_current_view (priv->view_instance), memos);
+}
+
+/**
+ * e_memos_discard_view_menus:
+ * @memos: A memos widget.
+ * 
+ * Discards the #GalView menus used by a memos control.  This function should be
+ * called from the Bonobo control deactivation callback for this memos control.
+ * The menus should have been set up with e_memos_setup_view_menus().
+ **/
+void
+e_memos_discard_view_menus (EMemos *memos)
+{
+	EMemosPrivate *priv;
+
+	g_return_if_fail (memos != NULL);
+	g_return_if_fail (E_IS_MEMOS (memos));
+
+	priv = memos->priv;
+
+	g_return_if_fail (priv->view_instance != NULL);
+
+	g_assert (priv->view_instance != NULL);
+	g_assert (priv->view_menus != NULL);
+
+	g_object_unref (priv->view_instance);
+	priv->view_instance = NULL;
+
+	g_object_unref (priv->view_menus);
+	priv->view_menus = NULL;
+}
+
+/**
+ * e_memos_get_calendar_table:
+ * @memos: A memos widget.
+ * 
+ * Queries the #EMemoTable contained in a memos widget.
+ * 
+ * Return value: The #EMemoTable that the memos widget uses to display its
+ * information.
+ **/
+EMemoTable *
+e_memos_get_calendar_table (EMemos *memos)
+{
+	EMemosPrivate *priv;
+
+	g_return_val_if_fail (memos != NULL, NULL);
+	g_return_val_if_fail (E_IS_MEMOS (memos), NULL);
+
+	priv = memos->priv;
+	return E_MEMO_TABLE (priv->memos_view);
+}