/*
 * Copyright (C) 2012 - Juan Ferrer Toribio
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "vn-form.h"

G_DEFINE_ABSTRACT_TYPE (VnForm, vn_form, GTK_TYPE_ALIGNMENT);

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public

/**
 * vn_form_open:
 * @obj: the #VnForm
 * 
 * Activates the form.
 * Virtual: open
 **/
void vn_form_open (VnForm * obj)
{
	const gchar * dir;
	gchar * file;
	GError * err = NULL;

	obj->builder = GTK_BUILDER (vn_builder_new ());
	gtk_builder_set_translation_domain (obj->builder, vn_mod_get_text_domain (obj->mod));

	dir = vn_mod_get_data_dir (obj->mod);
	file = g_strdup_printf ("%s/%s.glade", dir, obj->name);

	if (vn_builder_load_file (VN_BUILDER (obj->builder), obj->conn, file, &err))
	{
		gtk_builder_connect_signals (obj->builder, obj);
		VN_FORM_GET_CLASS (obj)->open (obj, obj->builder, NULL);
		gtk_container_add (GTK_CONTAINER (obj), vn_form_get (obj, "main"));
		gtk_widget_show_all (GTK_WIDGET (obj));

		// Loading actions from the .glade and the GtkUIManager definition

		if ((obj->actions = vn_form_get (obj, "actions")))
		{
			gchar * buffer;
			gchar * ui_file = g_strdup_printf ("%s/%s.ui", dir, obj->name);
			GError * err = NULL;

			if (g_file_get_contents (ui_file, &buffer, NULL, &err))
			{
				obj->ui = buffer;
				g_object_ref (obj->actions);
			}
			else
			{
				g_warning ("VnForm: Actions were defined for %s but no UI "
					"definition was found.", obj->name);
				g_error_free (err);
				obj->actions = NULL;
			}

			g_free (ui_file);
		}
	}
	else
	{
		g_warning ("VnForm: %s", err->message);
		g_error_free (err);
	}

	g_free (file);
}

/**
 * vn_form_get:
 * @obj: the #VnForm
 * @name: the object name
 * 
 * Gets an object from the form builder using its name.
 *
 * Return value: (transfer none): the object, or %NULL if there is no object
 * with that name
 **/
gpointer vn_form_get (VnForm * obj, const gchar * name)
{
	return (gpointer) gtk_builder_get_object (obj->builder, name);
}

/**
 * vn_form_get_name:
 * @obj: the #VnForm
 * 
 * Gets the name of the form.
 **/
const gchar * vn_form_get_name (VnForm * obj)
{
	g_return_val_if_fail (VN_IS_FORM (obj), NULL);

	return obj->name;
}

/**
 * vn_form_get_ui_manager:
 * @obj: the #VnForm
 * 
 * Returns the string containing the path of the #GtkUIManager UI definition
 * file for the form @obj.
 * 
 * Return value: a string
 **/
const gchar * vn_form_get_ui_manager (VnForm * obj)
{
	g_return_val_if_fail (VN_IS_FORM (obj), NULL);

	return obj->ui;
}

/**
 * vn_form_get_action_group:
 * @obj: the #VnForm
 * 
 * Returns the group actions implemented by @obj. 
 * 
 * Return value: (transfer none): a #GtkActionGroup
 **/
GtkActionGroup * vn_form_get_action_group (VnForm * obj)
{
	g_return_val_if_fail (VN_IS_FORM (obj), NULL);

	return obj->actions;
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties

enum
{
	 PROP_NAME = 1
	,PROP_GUI
	,PROP_CONN
	,PROP_MODULE
};

static void vn_form_set_property (VnForm * obj, guint id,
	const GValue * value, GParamSpec * pspec)
{
	switch (id)
	{
		case PROP_NAME:
			obj->name = g_value_dup_string (value);
			break;
		case PROP_GUI:
			obj->gui = g_value_dup_object (value);
			obj->conn = vn_gui_get_conn (obj->gui);
			break;
		case PROP_MODULE:
			obj->mod = g_value_dup_object (value);
			break;
		default:		
			G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);		
	}
}

static void vn_form_get_property (VnForm * obj, guint id,
	GValue * value, GParamSpec * pspec)
{
	switch (id)
	{
		case PROP_NAME:
			g_value_set_string (value, obj->name);
			break;
		case PROP_GUI:
			g_value_set_object (value, obj->gui);	
			break;
		case PROP_CONN:
			g_value_set_object (value, obj->conn);	
			break;
		case PROP_MODULE:
			g_value_set_object (value, obj->mod);
			break;
		default:
			G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);		
	}
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class

static void vn_form_init (VnForm * obj)
{
	obj->name = NULL;
	obj->gui = NULL;
	obj->conn = NULL;
	obj->builder = NULL;
	obj->mod = NULL;
	obj->actions = NULL;
	obj->ui = NULL;
}

static void vn_form_finalize (VnForm * obj)
{
	g_free (obj->name);
	g_free (obj->ui);
	g_clear_object (&obj->gui);
	g_clear_object (&obj->builder);
	g_clear_object (&obj->mod);
	g_clear_object (&obj->actions);
	G_OBJECT_CLASS (vn_form_parent_class)->finalize (G_OBJECT (obj));
}

static void vn_form_class_init (VnFormClass * k)
{
	GObjectClass * klass = G_OBJECT_CLASS (k);
	klass->finalize = (GObjectFinalizeFunc) vn_form_finalize;
	klass->set_property = (GObjectSetPropertyFunc) vn_form_set_property;
	klass->get_property = (GObjectGetPropertyFunc) vn_form_get_property;

	g_object_class_install_property (klass, PROP_NAME,
		g_param_spec_string ("name"
			,_("Name")
			,_("The form name")
			,NULL
			,G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE
	));
	g_object_class_install_property (klass, PROP_GUI,
		g_param_spec_object ("gui"
			,_("Gui")
			,_("The Gui object")
			,VN_TYPE_GUI
			,G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE
	));
	g_object_class_install_property (klass, PROP_CONN,
		g_param_spec_object ("conn"
			,_("Connection")
			,_("The connection used by the module")
			,DB_TYPE_CONN
			,G_PARAM_READABLE
	));
	g_object_class_install_property (klass, PROP_MODULE,
		g_param_spec_object ("module"
			,_("Module")
			,_("The module")
			,VN_TYPE_MOD
			,G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE
	));
}