/*
 * Copyright (C) 2014 Michal Ratajsky <michal.ratajsky@gmail.com>
 *
 * This library 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 licence, or (at your option) any later version.
 *
 * This library 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 this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include <string.h>
#include <glib.h>
#include <glib-object.h>

#include "matemixer-switch.h"
#include "matemixer-switch-option.h"
#include "matemixer-toggle.h"

/**
 * SECTION:matemixer-toggle
 * @include: libmatemixer/matemixer.h
 */

struct _MateMixerTogglePrivate
{
    MateMixerSwitchOption *on;
    MateMixerSwitchOption *off;
};

enum {
    PROP_0,
    PROP_STATE,
    PROP_STATE_OPTION_ON,
    PROP_STATE_OPTION_OFF,
    N_PROPERTIES
};

static GParamSpec *properties[N_PROPERTIES] = { NULL, };

static void mate_mixer_toggle_class_init   (MateMixerToggleClass *klass);

static void mate_mixer_toggle_get_property (GObject              *object,
                                            guint                 param_id,
                                            GValue               *value,
                                            GParamSpec           *pspec);
static void mate_mixer_toggle_set_property (GObject              *object,
                                            guint                 param_id,
                                            const GValue         *value,
                                            GParamSpec           *pspec);

static void mate_mixer_toggle_init         (MateMixerToggle      *toggle);
static void mate_mixer_toggle_dispose      (GObject              *object);

G_DEFINE_ABSTRACT_TYPE (MateMixerToggle, mate_mixer_toggle, MATE_MIXER_TYPE_SWITCH)

static MateMixerSwitchOption *mate_mixer_toggle_get_option   (MateMixerSwitch *swtch,
                                                              const gchar     *name);

static GList *                mate_mixer_toggle_list_options (MateMixerSwitch *swtch);

static void
mate_mixer_toggle_class_init (MateMixerToggleClass *klass)
{
    GObjectClass         *object_class;
    MateMixerSwitchClass *switch_class;

    object_class = G_OBJECT_CLASS (klass);
    object_class->dispose      = mate_mixer_toggle_dispose;
    object_class->get_property = mate_mixer_toggle_get_property;
    object_class->set_property = mate_mixer_toggle_set_property;

    switch_class = MATE_MIXER_SWITCH_CLASS (klass);
    switch_class->get_option   = mate_mixer_toggle_get_option;
    switch_class->list_options = mate_mixer_toggle_list_options;

    properties[PROP_STATE] =
        g_param_spec_boolean ("state",
                              "State",
                              "Current state",
                              FALSE,
                              G_PARAM_READABLE |
                              G_PARAM_STATIC_STRINGS);

    properties[PROP_STATE_OPTION_ON] =
        g_param_spec_object ("state-option-on",
                             "State option for on",
                             "Option corresponding to the 'on' value of the toggle",
                             MATE_MIXER_TYPE_SWITCH_OPTION,
                             G_PARAM_READWRITE |
                             G_PARAM_CONSTRUCT_ONLY |
                             G_PARAM_STATIC_STRINGS);

    properties[PROP_STATE_OPTION_OFF] =
        g_param_spec_object ("state-option-off",
                             "State option for off",
                             "Option corresponding to the 'off' value of the toggle",
                             MATE_MIXER_TYPE_SWITCH_OPTION,
                             G_PARAM_READWRITE |
                             G_PARAM_CONSTRUCT_ONLY |
                             G_PARAM_STATIC_STRINGS);

    g_object_class_install_properties (object_class, N_PROPERTIES, properties);

    g_type_class_add_private (object_class, sizeof (MateMixerTogglePrivate));
}

static void
mate_mixer_toggle_get_property (GObject    *object,
                                guint       param_id,
                                GValue     *value,
                                GParamSpec *pspec)
{
    MateMixerToggle *toggle;

    toggle = MATE_MIXER_TOGGLE (object);

    switch (param_id) {
    case PROP_STATE:
        g_value_set_boolean (value, mate_mixer_toggle_get_state (toggle));
        break;
    case PROP_STATE_OPTION_ON:
        g_value_set_object (value, toggle->priv->on);
        break;
    case PROP_STATE_OPTION_OFF:
        g_value_set_object (value, toggle->priv->off);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

static void
mate_mixer_toggle_set_property (GObject      *object,
                                guint         param_id,
                                const GValue *value,
                                GParamSpec   *pspec)
{
    MateMixerToggle *toggle;

    toggle = MATE_MIXER_TOGGLE (object);

    switch (param_id) {
    case PROP_STATE_OPTION_ON:
        /* Construct-only object */
        toggle->priv->on = g_value_dup_object (value);
        break;
    case PROP_STATE_OPTION_OFF:
        /* Construct-only object */
        toggle->priv->off = g_value_dup_object (value);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

static void
mate_mixer_toggle_init (MateMixerToggle *toggle)
{
    toggle->priv = G_TYPE_INSTANCE_GET_PRIVATE (toggle,
                                                MATE_MIXER_TYPE_TOGGLE,
                                                MateMixerTogglePrivate);
}

static void
mate_mixer_toggle_dispose (GObject *object)
{
    MateMixerToggle *toggle;

    toggle = MATE_MIXER_TOGGLE (object);

    g_clear_object (&toggle->priv->on);
    g_clear_object (&toggle->priv->off);

    G_OBJECT_CLASS (mate_mixer_toggle_parent_class)->dispose (object);
}

gboolean
mate_mixer_toggle_get_state (MateMixerToggle *toggle)
{
    MateMixerSwitchOption *active;

    g_return_val_if_fail (MATE_MIXER_IS_TOGGLE (toggle), FALSE);

    active = mate_mixer_switch_get_active_option (MATE_MIXER_SWITCH (toggle));
    if (active == toggle->priv->on)
        return TRUE;
    else
        return FALSE;
}

MateMixerSwitchOption *
mate_mixer_toggle_get_state_option (MateMixerToggle *toggle, gboolean state)
{
    g_return_val_if_fail (MATE_MIXER_IS_TOGGLE (toggle), NULL);

    if (state == TRUE)
        return toggle->priv->on;
    else
        return toggle->priv->off;
}

gboolean
mate_mixer_toggle_set_state (MateMixerToggle *toggle, gboolean state)
{
    MateMixerSwitchOption *active;

    g_return_val_if_fail (MATE_MIXER_IS_TOGGLE (toggle), FALSE);

    if (state == TRUE)
        active = toggle->priv->on;
    else
        active = toggle->priv->off;

    return mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (toggle), active);
}

static MateMixerSwitchOption *
mate_mixer_toggle_get_option (MateMixerSwitch *swtch, const gchar *name)
{
    MateMixerToggle *toggle;

    g_return_val_if_fail (MATE_MIXER_IS_TOGGLE (swtch), NULL);

    toggle = MATE_MIXER_TOGGLE (swtch);

    if (strcmp (name, mate_mixer_switch_option_get_name (toggle->priv->on)) == 0)
        return toggle->priv->on;
    if (strcmp (name, mate_mixer_switch_option_get_name (toggle->priv->off)) == 0)
        return toggle->priv->off;

    return NULL;
}

static GList *
mate_mixer_toggle_list_options (MateMixerSwitch *swtch)
{
    GList *list = NULL;

    g_return_val_if_fail (MATE_MIXER_IS_TOGGLE (swtch), NULL);

    list = g_list_prepend (list, MATE_MIXER_TOGGLE (swtch)->priv->off);
    list = g_list_prepend (list, MATE_MIXER_TOGGLE (swtch)->priv->on);

    return list;
}