path: root/calendar/gui/e-cal-model-calendar.c

/*
 * Evolution calendar - Data model for ETable
 *
 * 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:
 *      Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <string.h>
#include <glib/gi18n.h>
#include "e-cal-model-calendar.h"
#include "e-cell-date-edit-text.h"
#include "itip-utils.h"
#include "misc.h"
#include "dialogs/recur-comp.h"
#include "dialogs/send-comp.h"

struct _ECalModelCalendarPrivate {
    guint reserved;
};

static void e_cal_model_calendar_finalize (GObject *object);
static gint ecmc_column_count (ETableModel *etm);
static gpointer ecmc_value_at (ETableModel *etm, gint col, gint row);
static void ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value);
static gboolean ecmc_is_cell_editable (ETableModel *etm, gint col, gint row);
static gpointer ecmc_duplicate_value (ETableModel *etm, gint col, gconstpointer value);
static void ecmc_free_value (ETableModel *etm, gint col, gpointer value);
static gpointer ecmc_initialize_value (ETableModel *etm, gint col);
static gboolean ecmc_value_is_empty (ETableModel *etm, gint col, gconstpointer value);
static gchar *ecmc_value_to_string (ETableModel *etm, gint col, gconstpointer value);

static void ecmc_fill_component_from_model (ECalModel *model, ECalModelComponent *comp_data,
                        ETableModel *source_model, gint row);

G_DEFINE_TYPE (ECalModelCalendar, e_cal_model_calendar, E_TYPE_CAL_MODEL)

static void
e_cal_model_calendar_class_init (ECalModelCalendarClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    ETableModelClass *etm_class = E_TABLE_MODEL_CLASS (klass);
    ECalModelClass *model_class = E_CAL_MODEL_CLASS (klass);

    object_class->finalize = e_cal_model_calendar_finalize;

    etm_class->column_count = ecmc_column_count;
    etm_class->value_at = ecmc_value_at;
    etm_class->set_value_at = ecmc_set_value_at;
    etm_class->is_cell_editable = ecmc_is_cell_editable;
    etm_class->duplicate_value = ecmc_duplicate_value;
    etm_class->free_value = ecmc_free_value;
    etm_class->initialize_value = ecmc_initialize_value;
    etm_class->value_is_empty = ecmc_value_is_empty;
    etm_class->value_to_string = ecmc_value_to_string;

    model_class->fill_component_from_model = ecmc_fill_component_from_model;
}

static void
e_cal_model_calendar_init (ECalModelCalendar *model)
{
    ECalModelCalendarPrivate *priv;

    priv = g_new0 (ECalModelCalendarPrivate, 1);
    model->priv = priv;

    e_cal_model_set_component_kind (E_CAL_MODEL (model), ICAL_VEVENT_COMPONENT);
}

static void
e_cal_model_calendar_finalize (GObject *object)
{
    ECalModelCalendarPrivate *priv;
    ECalModelCalendar *model = (ECalModelCalendar *) object;

    g_return_if_fail (E_IS_CAL_MODEL_CALENDAR (model));

    priv = model->priv;
    if (priv) {
        g_free (priv);
        model->priv = NULL;
    }

    if (G_OBJECT_CLASS (e_cal_model_calendar_parent_class)->finalize)
        G_OBJECT_CLASS (e_cal_model_calendar_parent_class)->finalize (object);
}

/* ETableModel methods */
static gint
ecmc_column_count (ETableModel *etm)
{
    return E_CAL_MODEL_CALENDAR_FIELD_LAST;
}

static ECellDateEditValue *
get_dtend (ECalModelCalendar *model, ECalModelComponent *comp_data)
{
    struct icaltimetype tt_end;

    if (!comp_data->dtend) {
        icalproperty *prop;
        icaltimezone *zone = NULL, *model_zone = NULL;
        gboolean got_zone = FALSE;

        prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_DTEND_PROPERTY);
        if (!prop)
            return NULL;

        tt_end = icalproperty_get_dtend (prop);

        if (icaltime_get_tzid (tt_end)
            && e_cal_get_timezone (comp_data->client, icaltime_get_tzid (tt_end), &zone, NULL))
            got_zone = TRUE;

        model_zone = e_cal_model_get_timezone (E_CAL_MODEL (model));

        if (e_cal_model_get_flags (E_CAL_MODEL (model)) & E_CAL_MODEL_FLAGS_EXPAND_RECURRENCES) {
            if (got_zone) {
                tt_end = icaltime_from_timet_with_zone (comp_data->instance_end, tt_end.is_date, zone);
                if (model_zone)
                    icaltimezone_convert_time (&tt_end, zone, model_zone);
            } else
                tt_end = icaltime_from_timet_with_zone (comp_data->instance_end, tt_end.is_date,
                        model_zone);
        }

        if (!icaltime_is_valid_time (tt_end) || icaltime_is_null_time (tt_end))
            return NULL;

        comp_data->dtend = g_new0 (ECellDateEditValue, 1);
        comp_data->dtend->tt = tt_end;

        if (got_zone)
            comp_data->dtend->zone = zone;
        else
            comp_data->dtend->zone = NULL;
    }

    return comp_data->dtend;
}

static gpointer
get_location (ECalModelComponent *comp_data)
{
    icalproperty *prop;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_LOCATION_PROPERTY);
    if (prop)
        return (gpointer) icalproperty_get_location (prop);

    return (gpointer) "";
}

static gpointer
get_transparency (ECalModelComponent *comp_data)
{
    icalproperty *prop;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_TRANSP_PROPERTY);
    if (prop) {
        icalproperty_transp transp;

        transp = icalproperty_get_transp (prop);
        if (transp == ICAL_TRANSP_TRANSPARENT ||
            transp == ICAL_TRANSP_TRANSPARENTNOCONFLICT)
            return _("Free");
        else if (transp == ICAL_TRANSP_OPAQUE ||
             transp == ICAL_TRANSP_OPAQUENOCONFLICT)
            return _("Busy");
    }

    return NULL;
}

static gpointer
ecmc_value_at (ETableModel *etm, gint col, gint row)
{
    ECalModelComponent *comp_data;
    ECalModelCalendar *model = (ECalModelCalendar *) etm;

    g_return_val_if_fail (E_IS_CAL_MODEL_CALENDAR (model), NULL);

    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, NULL);
    g_return_val_if_fail (row >= 0 && row < e_table_model_row_count (etm), NULL);

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->value_at (etm, col, row);

    comp_data = e_cal_model_get_component_at (E_CAL_MODEL (model), row);
    if (!comp_data)
        return (gpointer) "";

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        return get_dtend (model, comp_data);
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
        return get_location (comp_data);
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return get_transparency (comp_data);
    }

    return (gpointer) "";
}

static void
set_dtend (ECalModelComponent *comp_data, gconstpointer value)
{
    ECellDateEditValue *dv = (ECellDateEditValue *) value;
    icalproperty *prop;
    icalparameter *param;
    const gchar *tzid;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_DTEND_PROPERTY);
    if (prop)
        param = icalproperty_get_first_parameter (prop, ICAL_TZID_PARAMETER);
    else
        param = NULL;

    /* If we are setting the property to NULL (i.e. removing it), then
       we remove it if it exists. */
    if (!dv) {
        if (prop) {
            icalcomponent_remove_property (comp_data->icalcomp, prop);
            icalproperty_free (prop);
        }

        return;
    }

    /* If the TZID is set to "UTC", we set the is_utc flag. */
    tzid = dv->zone ? icaltimezone_get_tzid (dv->zone) : "UTC";
    if (tzid && !strcmp (tzid, "UTC"))
        dv->tt.is_utc = 1;
    else
        dv->tt.is_utc = 0;

    if (prop) {
        icalproperty_set_dtend (prop, dv->tt);
    } else {
        prop = icalproperty_new_dtend (dv->tt);
        icalcomponent_add_property (comp_data->icalcomp, prop);
    }

    /* If the TZID is set to "UTC", we don't want to save the TZID. */
    if (tzid && strcmp (tzid, "UTC")) {
        if (param) {
            icalparameter_set_tzid (param, (gchar *) tzid);
        } else {
            param = icalparameter_new_tzid ((gchar *) tzid);
            icalproperty_add_parameter (prop, param);
        }
    } else if (param) {
        icalproperty_remove_parameter (prop, ICAL_TZID_PARAMETER);
    }
}

static void
set_location (ECalModelComponent *comp_data, gconstpointer value)
{
    icalproperty *prop;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_LOCATION_PROPERTY);

    if (string_is_empty (value)) {
        if (prop) {
            icalcomponent_remove_property (comp_data->icalcomp, prop);
            icalproperty_free (prop);
        }
    } else {
        if (prop)
            icalproperty_set_location (prop, (const gchar *) value);
        else {
            prop = icalproperty_new_location ((const gchar *) value);
            icalcomponent_add_property (comp_data->icalcomp, prop);
        }
    }
}

static void
set_transparency (ECalModelComponent *comp_data, gconstpointer value)
{
    icalproperty *prop;

    prop = icalcomponent_get_first_property (comp_data->icalcomp, ICAL_TRANSP_PROPERTY);

    if (string_is_empty (value)) {
        if (prop) {
            icalcomponent_remove_property (comp_data->icalcomp, prop);
            icalproperty_free (prop);
        }
    } else {
        icalproperty_transp transp;

        if (!g_ascii_strcasecmp (value, "FREE"))
            transp = ICAL_TRANSP_TRANSPARENT;
        else if (!g_ascii_strcasecmp (value, "OPAQUE"))
            transp = ICAL_TRANSP_OPAQUE;
        else {
            if (prop) {
                icalcomponent_remove_property (comp_data->icalcomp, prop);
                icalproperty_free (prop);
            }

            return;
        }

        if (prop)
            icalproperty_set_transp (prop, transp);
        else {
            prop = icalproperty_new_transp (transp);
            icalcomponent_add_property (comp_data->icalcomp, prop);
        }
    }
}

static void
ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
{
    ECalModelComponent *comp_data;
    CalObjModType mod = CALOBJ_MOD_ALL;
    ECalComponent *comp;
    ECalModelCalendar *model = (ECalModelCalendar *) etm;

    g_return_if_fail (E_IS_CAL_MODEL_CALENDAR (model));
    g_return_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST);
    g_return_if_fail (row >= 0 && row < e_table_model_row_count (etm));

    if (col < E_CAL_MODEL_FIELD_LAST) {
        E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->set_value_at (etm, col, row, value);
        return;
    }

    comp_data = e_cal_model_get_component_at (E_CAL_MODEL (model), row);
    if (!comp_data)
        return;

    comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (comp_data->icalcomp))) {
        g_object_unref (comp);
        return;
    }

    /* ask about mod type */
    if (e_cal_component_is_instance (comp)) {
        if (!recur_component_dialog (comp_data->client, comp, &mod, NULL, FALSE)) {
            g_object_unref (comp);
            return;
        }
    }

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        set_dtend (comp_data, value);
        break;
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
        set_location (comp_data, value);
        break;
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        set_transparency (comp_data, value);
        break;
    }

    if (e_cal_modify_object (comp_data->client, comp_data->icalcomp, mod, NULL)) {
        gboolean strip_alarms = TRUE;

        if (itip_organizer_is_user (comp, comp_data->client) &&
            send_component_dialog (NULL, comp_data->client, comp, FALSE, &strip_alarms)) {
            ECalComponent *send_comp = NULL;

            if (mod == CALOBJ_MOD_ALL && e_cal_component_is_instance (comp)) {
                /* Ensure we send the master object, not the instance only */
                icalcomponent *icalcomp = NULL;
                const gchar *uid = NULL;

                e_cal_component_get_uid (comp, &uid);
                if (e_cal_get_object (comp_data->client, uid, NULL, &icalcomp, NULL) && icalcomp) {
                    send_comp = e_cal_component_new ();
                    if (!e_cal_component_set_icalcomponent (send_comp, icalcomp)) {
                        icalcomponent_free (icalcomp);
                        g_object_unref (send_comp);
                        send_comp = NULL;
                    }
                }
            }

            itip_send_comp (E_CAL_COMPONENT_METHOD_REQUEST, send_comp ? send_comp : comp,
                    comp_data->client, NULL, NULL, NULL, strip_alarms);

            if (send_comp)
                g_object_unref (send_comp);
        }
    } else {
        g_warning (G_STRLOC ": Could not modify the object!");

        /* FIXME Show error dialog */
    }

    g_object_unref (comp);
}

static gboolean
ecmc_is_cell_editable (ETableModel *etm, gint col, gint row)
{
    ECalModelCalendar *model = (ECalModelCalendar *) etm;

    g_return_val_if_fail (E_IS_CAL_MODEL_CALENDAR (model), FALSE);
    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, FALSE);
    g_return_val_if_fail (row >= -1 || (row >= 0 && row < e_table_model_row_count (etm)), FALSE);

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->is_cell_editable (etm, col, row);

    if (!e_cal_model_test_row_editable (E_CAL_MODEL (etm), row))
        return FALSE;

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return TRUE;
    }

    return FALSE;
}

static gpointer
ecmc_duplicate_value (ETableModel *etm, gint col, gconstpointer value)
{
    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, NULL);

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->duplicate_value (etm, col, value);

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        if (value) {
            ECellDateEditValue *dv, *orig_dv;

            orig_dv = (ECellDateEditValue *) value;
            dv = g_new0 (ECellDateEditValue, 1);
            *dv = *orig_dv;

            return dv;
        }
        break;
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return g_strdup (value);
    }

    return NULL;
}

static void
ecmc_free_value (ETableModel *etm, gint col, gpointer value)
{
    g_return_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST);

    if (col < E_CAL_MODEL_FIELD_LAST) {
        E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->free_value (etm, col, value);
        return;
    }

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        if (value)
            g_free (value);
        break;
    }
}

static gpointer
ecmc_initialize_value (ETableModel *etm, gint col)
{
    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, NULL);

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->initialize_value (etm, col);

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        return NULL;
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return g_strdup ("");
    }

    return NULL;
}

static gboolean
ecmc_value_is_empty (ETableModel *etm, gint col, gconstpointer value)
{
    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, TRUE);

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->value_is_empty (etm, col, value);

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        return value ? FALSE : TRUE;
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return string_is_empty (value);
    }

    return TRUE;
}

static gchar *
ecmc_value_to_string (ETableModel *etm, gint col, gconstpointer value)
{
    g_return_val_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST, g_strdup (""));

    if (col < E_CAL_MODEL_FIELD_LAST)
        return E_TABLE_MODEL_CLASS (e_cal_model_calendar_parent_class)->value_to_string (etm, col, value);

    switch (col) {
    case E_CAL_MODEL_CALENDAR_FIELD_DTEND :
        return e_cal_model_date_value_to_string (E_CAL_MODEL (etm), value);
    case E_CAL_MODEL_CALENDAR_FIELD_LOCATION :
    case E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY :
        return g_strdup (value);
    }

    return g_strdup ("");
}

/* ECalModel class methods */

static void
ecmc_fill_component_from_model (ECalModel *model, ECalModelComponent *comp_data,
                ETableModel *source_model, gint row)
{
    g_return_if_fail (E_IS_CAL_MODEL_CALENDAR (model));
    g_return_if_fail (comp_data != NULL);
    g_return_if_fail (E_IS_TABLE_MODEL (source_model));

    set_dtend (comp_data,
           e_table_model_value_at (source_model, E_CAL_MODEL_CALENDAR_FIELD_DTEND, row));
    set_location (comp_data,
              e_table_model_value_at (source_model, E_CAL_MODEL_CALENDAR_FIELD_LOCATION, row));
    set_transparency (comp_data,
              e_table_model_value_at (source_model, E_CAL_MODEL_CALENDAR_FIELD_TRANSPARENCY, row));
}

/**
 * e_cal_model_calendar_new
 */
ECalModel *
e_cal_model_calendar_new (EShellSettings *shell_settings)
{
    g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);

    return g_object_new (
        E_TYPE_CAL_MODEL_CALENDAR,
        "shell-settings", shell_settings, NULL);
}