/*
 * Copyright (C) 2019 Purism SPC
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */

#include "config.h"
#include <glib/gi18n-lib.h>

#include "hdy-preferences-page-private.h"

#include "hdy-preferences-group-private.h"

/**
 * HdyPreferencesPage:
 *
 * A page from [class@PreferencesWindow].
 *
 * The `HdyPreferencesPage` widget gathers preferences groups into a single page
 * of a preferences window.
 *
 * ## CSS nodes
 *
 * `HdyPreferencesPage` has a single CSS node with name `preferencespage`.
 *
 * Since: 1.0
 */

typedef struct
{
  GtkBox *box;
  GtkScrolledWindow *scrolled_window;

  gchar *icon_name;
  gchar *title;
} HdyPreferencesPagePrivate;

G_DEFINE_TYPE_WITH_PRIVATE (HdyPreferencesPage, hdy_preferences_page, GTK_TYPE_BIN)

enum {
  PROP_0,
  PROP_ICON_NAME,
  PROP_TITLE,
  LAST_PROP,
};

static GParamSpec *props[LAST_PROP];

static void
hdy_preferences_page_get_property (GObject    *object,
                                   guint       prop_id,
                                   GValue     *value,
                                   GParamSpec *pspec)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (object);

  switch (prop_id) {
  case PROP_ICON_NAME:
    g_value_set_string (value, hdy_preferences_page_get_icon_name (self));
    break;
  case PROP_TITLE:
    g_value_set_string (value, hdy_preferences_page_get_title (self));
    break;
  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  }
}

static void
hdy_preferences_page_set_property (GObject      *object,
                                   guint         prop_id,
                                   const GValue *value,
                                   GParamSpec   *pspec)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (object);

  switch (prop_id) {
  case PROP_ICON_NAME:
    hdy_preferences_page_set_icon_name (self, g_value_get_string (value));
    break;
  case PROP_TITLE:
    hdy_preferences_page_set_title (self, g_value_get_string (value));
    break;
  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  }
}

static void
hdy_preferences_page_finalize (GObject *object)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (object);
  HdyPreferencesPagePrivate *priv = hdy_preferences_page_get_instance_private (self);

  g_clear_pointer (&priv->icon_name, g_free);
  g_clear_pointer (&priv->title, g_free);

  G_OBJECT_CLASS (hdy_preferences_page_parent_class)->finalize (object);
}

static void
hdy_preferences_page_add (GtkContainer *container,
                          GtkWidget    *child)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (container);
  HdyPreferencesPagePrivate *priv = hdy_preferences_page_get_instance_private (self);

  if (priv->scrolled_window == NULL)
    GTK_CONTAINER_CLASS (hdy_preferences_page_parent_class)->add (container, child);
  else if (HDY_IS_PREFERENCES_GROUP (child))
    gtk_container_add (GTK_CONTAINER (priv->box), child);
  else
    g_warning ("Can't add children of type %s to %s",
               G_OBJECT_TYPE_NAME (child),
               G_OBJECT_TYPE_NAME (container));
}

static void
hdy_preferences_page_remove (GtkContainer *container,
                             GtkWidget    *child)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (container);
  HdyPreferencesPagePrivate *priv = hdy_preferences_page_get_instance_private (self);

  if (child == GTK_WIDGET (priv->scrolled_window))
    GTK_CONTAINER_CLASS (hdy_preferences_page_parent_class)->remove (container, child);
  else
    gtk_container_remove (GTK_CONTAINER (priv->box), child);
}

static void
hdy_preferences_page_forall (GtkContainer *container,
                             gboolean      include_internals,
                             GtkCallback   callback,
                             gpointer      callback_data)
{
  HdyPreferencesPage *self = HDY_PREFERENCES_PAGE (container);
  HdyPreferencesPagePrivate *priv = hdy_preferences_page_get_instance_private (self);

  if (include_internals)
    GTK_CONTAINER_CLASS (hdy_preferences_page_parent_class)->forall (container,
                                                                     include_internals,
                                                                     callback,
                                                                     callback_data);
  else if (priv->box)
    gtk_container_foreach (GTK_CONTAINER (priv->box), callback, callback_data);
}

static void
hdy_preferences_page_class_init (HdyPreferencesPageClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);

  object_class->get_property = hdy_preferences_page_get_property;
  object_class->set_property = hdy_preferences_page_set_property;
  object_class->finalize = hdy_preferences_page_finalize;

  container_class->add = hdy_preferences_page_add;
  container_class->remove = hdy_preferences_page_remove;
  container_class->forall = hdy_preferences_page_forall;

  /**
   * HdyPreferencesPage:icon-name: (attributes org.gtk.Property.get=hdy_preferences_page_get_icon_name org.gtk.Property.set=hdy_preferences_page_set_icon_name)
   *
   * The icon name for this page of preferences.
   *
   * Since: 1.0
   */
  props[PROP_ICON_NAME] =
    g_param_spec_string ("icon-name",
                         _("Icon name"),
                         _("Icon name"),
                         "",
                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);

  /**
   * HdyPreferencesPage:title: (attributes org.gtk.Property.get=hdy_preferences_page_get_title org.gtk.Property.set=hdy_preferences_page_set_title)
   *
   * The title for this page of preferences.
   *
   * Since: 1.0
   */
  props[PROP_TITLE] =
    g_param_spec_string ("title",
                         _("Title"),
                         _("Title"),
                         "",
                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);

  g_object_class_install_properties (object_class, LAST_PROP, props);

  gtk_widget_class_set_template_from_resource (widget_class,
                                               "/sm/puri/handy/ui/hdy-preferences-page.ui");
  gtk_widget_class_bind_template_child_private (widget_class, HdyPreferencesPage, box);
  gtk_widget_class_bind_template_child_private (widget_class, HdyPreferencesPage, scrolled_window);

  gtk_widget_class_set_css_name (widget_class, "preferencespage");
}

static void
hdy_preferences_page_init (HdyPreferencesPage *self)
{
  gtk_widget_init_template (GTK_WIDGET (self));
}

/**
 * hdy_preferences_page_new:
 *
 * Creates a new `HdyPreferencesPage`.
 *
 * Returns: the newly created `HdyPreferencesPage`
 *
 * Since: 1.0
 */
GtkWidget *
hdy_preferences_page_new (void)
{
  return g_object_new (HDY_TYPE_PREFERENCES_PAGE, NULL);
}

/**
 * hdy_preferences_page_get_icon_name: (attributes org.gtk.Method.get_property=icon-name)
 * @self: a preferences page
 *
 * Gets the icon name for @self.
 *
 * Returns: (transfer none) (nullable): the icon name for @self
 *
 * Since: 1.0
 */
const gchar *
hdy_preferences_page_get_icon_name (HdyPreferencesPage *self)
{
  HdyPreferencesPagePrivate *priv;

  g_return_val_if_fail (HDY_IS_PREFERENCES_PAGE (self), NULL);

  priv = hdy_preferences_page_get_instance_private (self);

  return priv->icon_name;
}

/**
 * hdy_preferences_page_set_icon_name: (attributes org.gtk.Method.set_property=icon-name)
 * @self: a preferences page
 * @icon_name: (nullable): the icon name
 *
 * Sets the icon name for @self.
 *
 * Since: 1.0
 */
void
hdy_preferences_page_set_icon_name (HdyPreferencesPage *self,
                                    const gchar        *icon_name)
{
  HdyPreferencesPagePrivate *priv;

  g_return_if_fail (HDY_IS_PREFERENCES_PAGE (self));

  priv = hdy_preferences_page_get_instance_private (self);

  if (g_strcmp0 (priv->icon_name, icon_name) == 0)
    return;

  g_clear_pointer (&priv->icon_name, g_free);
  priv->icon_name = g_strdup (icon_name);

  g_object_notify_by_pspec (G_OBJECT (self), props[PROP_ICON_NAME]);
}

/**
 * hdy_preferences_page_get_title: (attributes org.gtk.Method.get_property=title)
 * @self: a preferences page
 *
 * Gets the title of @self.
 *
 * Returns: (transfer none) (nullable): the title of the @self
 *
 * Since: 1.0
 */
const gchar *
hdy_preferences_page_get_title (HdyPreferencesPage *self)
{
  HdyPreferencesPagePrivate *priv;

  g_return_val_if_fail (HDY_IS_PREFERENCES_PAGE (self), NULL);

  priv = hdy_preferences_page_get_instance_private (self);

  return priv->title;
}

/**
 * hdy_preferences_page_set_title: (attributes org.gtk.Method.set_property=title)
 * @self: a preferences page
 * @title: (nullable): the title of the page
 *
 * Sets the title of @self.
 *
 * Since: 1.0
 */
void
hdy_preferences_page_set_title (HdyPreferencesPage *self,
                                const gchar        *title)
{
  HdyPreferencesPagePrivate *priv;

  g_return_if_fail (HDY_IS_PREFERENCES_PAGE (self));

  priv = hdy_preferences_page_get_instance_private (self);

  if (g_strcmp0 (priv->title, title) == 0)
    return;

  g_clear_pointer (&priv->title, g_free);
  priv->title = g_strdup (title);

  g_object_notify_by_pspec (G_OBJECT (self), props[PROP_TITLE]);
}

/*< private >
 * hdy_preferences_page_add_preferences_to_model:
 * @self: a preferences page
 * @model: the model
 *
 * Add preferences from @self to the model.
 *
 * Since: 1.0
 */
void
hdy_preferences_page_add_preferences_to_model (HdyPreferencesPage *self,
                                               GListStore         *model)
{
  HdyPreferencesPagePrivate *priv;

  g_return_if_fail (HDY_IS_PREFERENCES_PAGE (self));
  g_return_if_fail (G_IS_LIST_STORE (model));

  if (!gtk_widget_get_visible (GTK_WIDGET (self)))
    return;

  priv = hdy_preferences_page_get_instance_private (self);

  gtk_container_foreach (GTK_CONTAINER (priv->box), (GtkCallback) hdy_preferences_group_add_preferences_to_model, model);
}
