#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>

//##########################
//  Pages functions & var  #
//##########################
static GtkWidget *assistant = NULL;
static GtkWidget *progress_bar = NULL;

static gboolean apply_changes_gradually (gpointer data) {
	gdouble fraction;

	/* Work, work, work... */
	fraction = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (progress_bar));
	fraction += 0.05;

	if (fraction < 1.0) {
		gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction);
		return TRUE;
	}
	else {
	/* Close automatically once changes are fully applied. */
		g_print ("Exiting\n");
		gtk_main_quit ();
		assistant = NULL;
		return FALSE;
	}
}

static void on_assistant_apply (GtkWidget *widget, gpointer data) {
	/* Start a timer to simulate changes taking a few seconds to apply. */
	g_timeout_add (100, apply_changes_gradually, NULL);
}

static void on_assistant_close_cancel (GtkWidget *widget, gpointer data) {
	GtkWidget **assistant = (GtkWidget **) data;

	gtk_widget_destroy (*assistant);
	*assistant = NULL;
}

static void on_assistant_prepare (GtkWidget *widget, GtkWidget *page, gpointer data) {
	gint current_page, n_pages;
	gchar *title;

	current_page = gtk_assistant_get_current_page (GTK_ASSISTANT (widget));
	n_pages = gtk_assistant_get_n_pages (GTK_ASSISTANT (widget));
	g_print ("page :%d\n",current_page);
	title = g_strdup_printf ("ShowBook client (%d/%d)", current_page + 1, n_pages);
	gtk_window_set_title (GTK_WINDOW (widget), title);
	g_free (title);

	/* The fourth page (counting from zero) is the progress page.  The
	* user clicked Apply to get here so we tell the assistant to commit,
	* which means the changes up to this point are permanent and cannot
	* be cancelled or revisited. */
	if (current_page == 4)
		gtk_assistant_commit (GTK_ASSISTANT (widget));
}

static void on_entry_changed (GtkWidget *widget, gpointer data) {
	GtkAssistant *assistant = GTK_ASSISTANT (data);
	GtkWidget *current_page;
	gint page_number;
	const gchar *text;

	page_number = gtk_assistant_get_current_page (assistant);
 	current_page = gtk_assistant_get_nth_page (assistant, page_number);
	text = gtk_entry_get_text (GTK_ENTRY (widget));

	if (text && *text)
		gtk_assistant_set_page_complete (assistant, current_page, TRUE);
	else
		gtk_assistant_set_page_complete (assistant, current_page, FALSE);
}

//######################
//        Pages        #
//######################

static void create_page1 (GtkWidget *assistant) {
	GtkWidget *box, *label, *image, *current_page;
	
	box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
	gtk_container_set_border_width (GTK_CONTAINER (box), 12);

	label = gtk_label_new ("Bienvenue dans l'assistant de réservation en ligne ShowBook.\n" "Cliquez sur le bouton en bas à droite pour continuer.");
	//gtk_label_get_layout_offsets (GTK_LABEL(label), NULL, NULL);
	gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);

	image = gtk_image_new_from_file ("show.jpg");
	gtk_box_pack_start (GTK_BOX (box), image, FALSE, FALSE, 0);

	gtk_widget_show_all (box);
	gtk_assistant_append_page (GTK_ASSISTANT (assistant), box);
	gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), box, "Bienvenue");
	gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), box, GTK_ASSISTANT_PAGE_INTRO);
	
	gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), box, TRUE);
}


static void create_page2 (GtkWidget *assistant) {
GtkWidget *box, *label, *image, *current_page;
	
	box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
	gtk_container_set_border_width (GTK_CONTAINER (box), 12);

	label = gtk_label_new ("Nom du spectacle");
	//gtk_label_get_layout_offsets (GTK_LABEL(label), NULL, NULL);
	gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);

	image = gtk_image_new_from_file ("title.jpg");
	gtk_box_pack_start (GTK_BOX (box), image, FALSE, FALSE, 0);

	gtk_widget_show_all (box);
	gtk_assistant_append_page (GTK_ASSISTANT (assistant), box);
	gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), box, "Choix");
	gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), box, GTK_ASSISTANT_PAGE_INTRO);
	
	current_page = gtk_assistant_get_nth_page (GTK_ASSISTANT (assistant), 0);
	gtk_assistant_set_page_complete (GTK_ASSISTANT(assistant), current_page, TRUE);
}

static void create_page3 (GtkWidget *assistant) {
	GtkWidget *label;

	label = gtk_label_new ("This is a confirmation page, press 'Apply' to apply changes");

	gtk_widget_show (label);
	gtk_assistant_append_page (GTK_ASSISTANT (assistant), label);
	gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), label, GTK_ASSISTANT_PAGE_CONFIRM);
	gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), label, TRUE);
	gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), label, "Confirmation");
}


//######################
//  Window functions   #
//######################
static gboolean delete_event( GtkWidget *widget, GdkEvent *event, gpointer data )
{
    return FALSE;
}

static void destroy( GtkWidget *widget, gpointer data )
{
    g_print ("Exiting\n");
    gtk_main_quit ();
}


//######################
//        Main         #
//######################
int main( int argc, char *argv[] ) {

	/* Declarations */
	GtkWidget *window;
	GtkWidget *mainbox;
	GtkUIManager *ui;
	GtkActionGroup *actions;
	GError *error = NULL;

	gtk_init (&argc, &argv);
    
	/* Create a new window and set proprieties */
	window = gtk_window_new (GTK_WINDOW_TOPLEVEL);	
	assistant = gtk_assistant_new();
	gtk_window_set_title (GTK_WINDOW(assistant), "ShowBook client");
	gtk_window_set_default_size(GTK_WINDOW(assistant),800,600);
	
	gtk_window_set_screen (GTK_WINDOW (window),gtk_widget_get_screen (assistant));

	create_page1 (assistant);
	create_page2 (assistant);
	create_page3 (assistant);


	/* Define the main window box */
//	mainbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
//	gtk_container_add (GTK_CONTAINER (assistant), mainbox);



	/* Define window signals */
	g_signal_connect (assistant, "delete-event",G_CALLBACK (delete_event), NULL);
	g_signal_connect (assistant, "destroy",G_CALLBACK (destroy), NULL);
	g_signal_connect (G_OBJECT (assistant), "cancel",
                        G_CALLBACK (on_assistant_close_cancel), &assistant);
	g_signal_connect (G_OBJECT (assistant), "close",
                        G_CALLBACK (on_assistant_close_cancel), &assistant);
	g_signal_connect (G_OBJECT (assistant), "apply",
                        G_CALLBACK (on_assistant_apply), NULL);
	g_signal_connect (G_OBJECT (assistant), "prepare",
                        G_CALLBACK (on_assistant_prepare), NULL);
    
	//gtk_container_set_border_width (GTK_CONTAINER (window), 10);
    
	/* Display the window */
	gtk_widget_show_all (assistant);
    
	/* Launch gtk */
	gtk_main ();

	//g_object_unref (ui);
    
	return 0;
}