#include <gtk/gtk.h>

#include "litosapp.h"
#include "litosappwin.h"
#include "litosappprefs.h"

void litos_app_window_update_font ();
GSettings *litos_app_get_settings(LitosApp *app);

struct _LitosAppPrefs
{
	GtkDialog parent;

	GtkWidget *font;
};

G_DEFINE_TYPE (LitosAppPrefs, litos_app_prefs, GTK_TYPE_DIALOG)

static gboolean
string_to_font_desc (GValue   *value,
                     GVariant *variant,
                     gpointer  user_data)
{
	const char *s = g_variant_get_string (variant, NULL);
	PangoFontDescription *desc;

	desc = pango_font_description_from_string (s);
	g_value_take_boxed (value, desc);

	return TRUE;
}

static GVariant *
font_desc_to_string (const GValue       *value,
                     const GVariantType *expected_type,
                     gpointer            user_data)
{
	PangoFontDescription *desc = g_value_get_boxed (value);
	char *s = pango_font_description_to_string (desc);
	return g_variant_new_take_string (s);
}

static GVariant *
pos_to_transition (const GValue       *value,
                   const GVariantType *expected_type,
                   gpointer            user_data)
{
	switch (g_value_get_uint (value))
	{
		case 0: return g_variant_new_string ("none");
		case 1: return g_variant_new_string ("crossfade");
		case 2: return g_variant_new_string ("slide-left-right");
		default: g_assert_not_reached ();
	}
}

void _application_set_font(LitosAppPrefs *prefs)
{
	LitosApp *app = LITOS_APP(g_application_get_default());

	g_settings_bind_with_mapping (litos_app_get_settings(app), "font",
				prefs->font, "font-desc",
				G_SETTINGS_BIND_DEFAULT,
				string_to_font_desc,
				font_desc_to_string,
				NULL, NULL);
}

static void
litos_app_prefs_init (LitosAppPrefs *prefs)
{
	gtk_widget_init_template (GTK_WIDGET (prefs));

	g_signal_connect(prefs->font, "font-set", G_CALLBACK (litos_app_window_update_font), NULL);

	g_signal_connect(G_OBJECT(prefs), "notify::application", G_CALLBACK (_application_set_font), NULL);
}

static void
litos_app_prefs_dispose (GObject *object)
{
	LitosAppPrefs *prefs;

	prefs = LITOS_APP_PREFS (object);

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

static void
litos_app_prefs_class_init (LitosAppPrefsClass *class)
{
	G_OBJECT_CLASS (class)->dispose = litos_app_prefs_dispose;

	gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
                                               "/org/gtk/litos/prefs.ui");
	gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), LitosAppPrefs, font);
}

LitosAppPrefs *
litos_app_prefs_new (LitosAppWindow *win)
{
	LitosAppPrefs *prefs = g_object_new (LITOS_APP_PREFS_TYPE, "transient-for", win, "use-header-bar", TRUE, NULL);
	gtk_window_set_application(GTK_WINDOW(prefs), GTK_APPLICATION(g_application_get_default()));
	return prefs;
}