path: root/widgets/misc/e-contact-map.c

/*
 * e-contact-map.c
 *
 * 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/>
 *
 * Copyright (C) 2011 Dan Vratil <dvratil@redhat.com>
 */

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

#ifdef WITH_CONTACT_MAPS

#include "e-contact-map.h"
#include "e-contact-marker.h"

#include <e-util/e-marshal.h>

#include <champlain/champlain.h>
#include <champlain-gtk/champlain-gtk.h>
#include <geoclue/geoclue-address.h>
#include <geoclue/geoclue-position.h>
#include <geoclue/geoclue-geocode.h>

#include <clutter/clutter.h>

#include <libebook/e-contact.h>

#include <string.h>
#include <glib/gi18n.h>
#include <math.h>

G_DEFINE_TYPE (EContactMap, e_contact_map, GTK_TYPE_CHAMPLAIN_EMBED)

struct _EContactMapPrivate {
    GHashTable *markers; /* Hash table contact-name -> marker */

    ChamplainMarkerLayer *marker_layer;
};

struct GeoclueCallbackData {
    EContactMap *map;
    EContactMarker *marker;
};

enum {
    CONTACT_ADDED,
    CONTACT_REMOVED,
    GEOCODING_STARTED,
    GEOCODING_FAILED,
    LAST_SIGNAL
};

static gint signals[LAST_SIGNAL] = {0};

static GHashTable *
contact_map_geocode_address (EContactAddress *address)
{
    GHashTable *details;

    g_return_val_if_fail (address, NULL);

    details = geoclue_address_details_new ();
    g_hash_table_insert (details, g_strdup (GEOCLUE_ADDRESS_KEY_POSTALCODE), g_strdup (address->code));
    g_hash_table_insert (details, g_strdup (GEOCLUE_ADDRESS_KEY_COUNTRY), g_strdup (address->country));
    g_hash_table_insert (details, g_strdup (GEOCLUE_ADDRESS_KEY_LOCALITY), g_strdup (address->locality));
    g_hash_table_insert (details, g_strdup (GEOCLUE_ADDRESS_KEY_STREET), g_strdup (address->street));

    return details;
}

static void
contact_map_address_resolved_cb (GeoclueGeocode *geocode,
                 GeocluePositionFields fields,
                 double latitude,
                 double longitude,
                 double altitude,
                 GeoclueAccuracy *accuracy,
                 GError *error,
                 struct GeoclueCallbackData *data)
{
    EContactMapPrivate *priv;
    gpointer marker_ptr;
    const gchar *name;

    g_return_if_fail (data);
    g_return_if_fail (data->map && E_IS_CONTACT_MAP (data->map));
    g_return_if_fail (data->map->priv);
    g_return_if_fail (data->marker && E_IS_CONTACT_MARKER (data->marker));

    /* If the marker_layer does not exist anymore, the map has probably been destroyed before this
       callback was launched. It's not a failure, just silently clean up what was left behind
       a pretend nothing happend */

    if (!data->map->priv->marker_layer || !CHAMPLAIN_IS_MARKER_LAYER (data->map->priv->marker_layer)) {
        goto exit;
    }

    if (error ||
        (((fields & GEOCLUE_POSITION_FIELDS_LATITUDE) == 0) && ((fields & GEOCLUE_POSITION_FIELDS_LONGITUDE) == 0))) {
            const gchar *name;
            if (error)
                g_error_free (error);
        name = champlain_label_get_text (CHAMPLAIN_LABEL (data->marker));
            g_signal_emit (data->map, signals[GEOCODING_FAILED], 0, name);
            goto exit;
    }

    priv = data->map->priv;

    /* Move the marker to resolved position */
    champlain_location_set_location (CHAMPLAIN_LOCATION (data->marker),
        latitude, longitude);
    champlain_marker_layer_add_marker (data->map->priv->marker_layer,
        CHAMPLAIN_MARKER (data->marker));

    /* Store the marker in the hash table. Use it's label as key */
    name = champlain_label_get_text (CHAMPLAIN_LABEL (data->marker));
    marker_ptr = g_hash_table_lookup (priv->markers, name);

    if (marker_ptr) {
        g_hash_table_remove (priv->markers, name);
        champlain_marker_layer_remove_marker (priv->marker_layer, marker_ptr);
    }
    g_hash_table_insert (priv->markers,
        g_strdup (name), data->marker);

    g_signal_emit (data->map, signals[CONTACT_ADDED], 0, data->marker);

exit:
        g_object_unref (data->map);
    g_free (data);

    if (geocode)
        g_object_unref (geocode);
}

static void
resolve_marker_position (EContactMap *map,
             EContactMarker *marker,
             EContactAddress *address)
{
    GHashTable *details;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    details = contact_map_geocode_address (address);

    if (details) {
        GeoclueGeocode *geocoder;
        struct GeoclueCallbackData *callback_data = g_new0 (struct GeoclueCallbackData, 1);

        callback_data->map = map;
        callback_data->marker = marker;

        /* Make sure the map won't cease to exist before the address
           is resolved */
        g_object_ref (map);

        geocoder = geoclue_geocode_new ("org.freedesktop.Geoclue.Providers.Yahoo",
                "/org/freedesktop/Geoclue/Providers/Yahoo");

        geoclue_geocode_address_to_position_async (geocoder, details,
            (GeoclueGeocodeCallback) contact_map_address_resolved_cb,
            callback_data);

        g_hash_table_destroy (details);

        g_signal_emit (map, signals[GEOCODING_STARTED], 0, marker);
    }
}

static void
contact_map_finalize (GObject *object)
{
    EContactMapPrivate *priv;

    priv = E_CONTACT_MAP (object)->priv;

    if (priv->markers) {
        g_hash_table_destroy (priv->markers);
        priv->markers = NULL;
    }

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_contact_map_parent_class)->finalize (object);
}

static void
e_contact_map_class_init (EContactMapClass *class)
{
    GObjectClass *object_class;

    g_type_class_add_private (class, sizeof (EContactMap));

    object_class = G_OBJECT_CLASS (class);
    object_class->finalize = contact_map_finalize;

    signals[CONTACT_ADDED] = g_signal_new (
        "contact-added",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EContactMapClass, contact_added),
        NULL, NULL,
        g_cclosure_marshal_VOID__OBJECT,
        G_TYPE_NONE, 1, G_TYPE_OBJECT);

    signals[CONTACT_REMOVED] = g_signal_new (
        "contact-removed",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EContactMapClass, contact_removed),
        NULL, NULL,
        g_cclosure_marshal_VOID__STRING,
        G_TYPE_NONE, 1, G_TYPE_STRING);

    signals[GEOCODING_STARTED] = g_signal_new (
        "geocoding-started",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EContactMapClass, geocoding_started),
        NULL, NULL,
        g_cclosure_marshal_VOID__OBJECT,
        G_TYPE_NONE, 1, G_TYPE_OBJECT);

    signals[GEOCODING_FAILED] = g_signal_new (
        "geocoding-failed",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EContactMapClass, geocoding_failed),
        NULL, NULL,
        g_cclosure_marshal_VOID__STRING,
        G_TYPE_NONE, 1, G_TYPE_STRING);
}

static void
e_contact_map_init (EContactMap *map)
{
    GHashTable *hash_table;
    ChamplainMarkerLayer *layer;
    ChamplainView *view;

    map->priv =  G_TYPE_INSTANCE_GET_PRIVATE (
        map, E_TYPE_CONTACT_MAP, EContactMapPrivate);

    hash_table = g_hash_table_new_full (g_str_hash, g_str_equal,
            (GDestroyNotify) g_free, NULL);

    map->priv->markers = hash_table;

    view = gtk_champlain_embed_get_view (GTK_CHAMPLAIN_EMBED (map));
    /* This feature is somehow broken sometimes, so disable it for now */
    champlain_view_set_zoom_on_double_click (view, FALSE);
    layer = champlain_marker_layer_new_full (CHAMPLAIN_SELECTION_SINGLE);
    champlain_view_add_layer (view, CHAMPLAIN_LAYER (layer));
    map->priv->marker_layer = layer;
}

GtkWidget*
e_contact_map_new (void)
{
    return g_object_new (
        E_TYPE_CONTACT_MAP,NULL);
}

void
e_contact_map_add_contact (EContactMap *map,
               EContact *contact)
{
    EContactAddress *address;
    EContactPhoto *photo;
    const gchar *contact_uid;
    gchar *name;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    g_return_if_fail (contact && E_IS_CONTACT (contact));

    photo = e_contact_get (contact, E_CONTACT_PHOTO);
    contact_uid = e_contact_get_const (contact, E_CONTACT_UID);

    address = e_contact_get (contact, E_CONTACT_ADDRESS_HOME);
    if (address) {
        name = g_strconcat (e_contact_get_const (contact, E_CONTACT_FILE_AS), " (", _("Home"), ")", NULL);
        e_contact_map_add_marker (map, name, contact_uid, address, photo);
        g_free (name);
        e_contact_address_free (address);
    }

    address = e_contact_get (contact, E_CONTACT_ADDRESS_WORK);
    if (address) {
        name = g_strconcat (e_contact_get_const (contact, E_CONTACT_FILE_AS), " (", _("Work"), ")", NULL);
        e_contact_map_add_marker (map, name, contact_uid, address, photo);
        g_free (name);
        e_contact_address_free (address);
    }

    if (photo)
        e_contact_photo_free (photo);
}

void
e_contact_map_add_marker (EContactMap *map,
              const gchar *name,
              const gchar *contact_uid,
              EContactAddress *address,
              EContactPhoto *photo)
{
    EContactMarker *marker;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    g_return_if_fail (name && *name);
    g_return_if_fail (contact_uid && *contact_uid);
    g_return_if_fail (address);

    marker = E_CONTACT_MARKER (e_contact_marker_new (name, contact_uid, photo));

    resolve_marker_position (map, marker, address);
}

/**
 * The \name parameter must match the label of the
 * marker (for example "John Smith (work)")
 */
void
e_contact_map_remove_contact (EContactMap *map,
                  const gchar *name)
{
    ChamplainMarker *marker;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    g_return_if_fail (name && *name);

    marker = g_hash_table_lookup (map->priv->markers, name);

    champlain_marker_layer_remove_marker (map->priv->marker_layer, marker);

    g_hash_table_remove (map->priv->markers, name);

    g_signal_emit (map, signals[CONTACT_REMOVED], 0, name);
}

void
e_contact_map_remove_marker (EContactMap *map,
                 ClutterActor *marker)
{
    const gchar *name;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    g_return_if_fail (marker && CLUTTER_IS_ACTOR (marker));

    name = champlain_label_get_text (CHAMPLAIN_LABEL (marker));

    e_contact_map_remove_contact (map, name);
}

void
e_contact_map_zoom_on_marker (EContactMap *map,
                  ClutterActor *marker)
{
    ChamplainView *view;
    double lat, lng;

    g_return_if_fail (map && E_IS_CONTACT_MAP (map));
    g_return_if_fail (marker && CLUTTER_IS_ACTOR (marker));

    lat = champlain_location_get_latitude (CHAMPLAIN_LOCATION (marker));
    lng = champlain_location_get_longitude (CHAMPLAIN_LOCATION (marker));

    view = gtk_champlain_embed_get_view (GTK_CHAMPLAIN_EMBED (map));

    champlain_view_center_on (view, lat, lng);
    champlain_view_set_zoom_level (view, 15);
}

ChamplainView*
e_contact_map_get_view (EContactMap *map)
{
    g_return_val_if_fail (E_IS_CONTACT_MAP (map), NULL);

    return gtk_champlain_embed_get_view (GTK_CHAMPLAIN_EMBED (map));
}

#endif /* WITH_CONTACT_MAPS */