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

/* Evolution calendar - Data model for ETable
 *
 * Copyright (C) 2000 Ximian, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Authors: Rodrigo Moya <rodrigo@ximian.com>
 *
 * 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.
 */

#include <config.h>
#include <string.h>
#include <libgnome/gnome-i18n.h>
#include <gal/util/e-util.h>
#include "e-cal-model-calendar.h"
#include "e-cell-date-edit-text.h"
#include "misc.h"

struct _ECalModelCalendarPrivate {
};

static void ecmc_class_init (ECalModelCalendarClass *klass);
static void ecmc_init (ECalModelCalendar *model, ECalModelCalendarClass *klass);
static void ecmc_finalize (GObject *object);
static int ecmc_column_count (ETableModel *etm);
static void *ecmc_value_at (ETableModel *etm, int col, int row);
static void ecmc_set_value_at (ETableModel *etm, int col, int row, const void *value);
static gboolean ecmc_is_cell_editable (ETableModel *etm, int col, int row);
static void *ecmc_duplicate_value (ETableModel *etm, int col, const void *value);
static void ecmc_free_value (ETableModel *etm, int col, void *value);
static void *ecmc_initialize_value (ETableModel *etm, int col);
static gboolean ecmc_value_is_empty (ETableModel *etm, int col, const void *value);
static char *ecmc_value_to_string (ETableModel *etm, int col, const void *value);

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

static GObjectClass *parent_class = NULL;

E_MAKE_TYPE (e_cal_model_calendar, "ECalModelCalendar", ECalModelCalendar, ecmc_class_init,
         ecmc_init, E_TYPE_CAL_MODEL);

static void
ecmc_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);

    parent_class = g_type_class_peek_parent (klass);

    object_class->finalize = ecmc_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
ecmc_init (ECalModelCalendar *model, ECalModelCalendarClass *klass)
{
    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
ecmc_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 (parent_class->finalize)
        parent_class->finalize (object);
}

/* ETableModel methods */
static int
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;
        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;

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

        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 void *
get_location (ECalModelComponent *comp_data)
{
    icalproperty *prop;

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

    return "";
}

static void *
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 void *
ecmc_value_at (ETableModel *etm, int col, int row)
{
    ECalModelComponent *comp_data;
    ECalModelCalendarPrivate *priv;
    ECalModelCalendar *model = (ECalModelCalendar *) etm;

    g_return_val_if_fail (E_IS_CAL_MODEL_CALENDAR (model), NULL);

    priv = model->priv;

    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 (parent_class)->value_at (etm, col, row);

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

    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 "";
}

static void
set_dtend (ECalModelComponent *comp_data, const void *value)
{
    ECellDateEditValue *dv = (ECellDateEditValue *) value;
    icalproperty *prop;
    icalparameter *param;
    const char *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, (char *) tzid);
        } else {
            param = icalparameter_new_tzid ((char *) tzid);
            icalproperty_add_parameter (prop, param);
        }
    } else if (param) {
        icalproperty_remove_parameter (prop, ICAL_TZID_PARAMETER);
    }
}

static void
set_location (ECalModelComponent *comp_data, const void *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 char *) value);
        else {
            prop = icalproperty_new_location ((const char *) value);
            icalcomponent_add_property (comp_data->icalcomp, prop);
        }
    }
}

static void
set_transparency (ECalModelComponent *comp_data, const void *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 (!strcasecmp (value, "FREE"))
            transp = ICAL_TRANSP_TRANSPARENT;
        else if (!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, int col, int row, const void *value)
{
    ECalModelComponent *comp_data;
    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 (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;

    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;
    }

    /* FIXME ask about mod type */
    if (!e_cal_modify_object (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL)) {
        g_warning (G_STRLOC ": Could not modify the object!");
        
        /* FIXME Show error dialog */
    }
}

static gboolean
ecmc_is_cell_editable (ETableModel *etm, int col, int 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 (parent_class)->is_cell_editable (etm, col, row);

    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 void *
ecmc_duplicate_value (ETableModel *etm, int col, const void *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 (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, int col, void *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 (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 void *
ecmc_initialize_value (ETableModel *etm, int 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 (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, int col, const void *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 (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 char *
ecmc_value_to_string (ETableModel *etm, int col, const void *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 (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
 */
ECalModelCalendar *
e_cal_model_calendar_new (void)
{
    return g_object_new (E_TYPE_CAL_MODEL_CALENDAR, NULL);
}