#include <glib.h>
#include <glib/gprintf.h>
#include <gtk/gtk.h>
#include <glade/glade.h>

#include "web_history.h"
#include "web.h"

void
web_history_free (WebHistory *history)
{
	if (history->title)
		g_free (history->title);
	g_free (history->url);
	g_free (history);
}

static void
web_history_clear_cb (GtkWidget *widget, gpointer data)
{
	GtkContainer *container = data;
	gtk_container_remove (container, widget);
}

void
web_history_clear (WebPages *pages, gboolean back, gboolean forward)
{
	GtkWidget *widget;

	if (back) {
		widget = glade_xml_get_widget (pages->xml, "back_menuitem");
		gtk_widget_set_sensitive (widget, FALSE);
		widget = glade_xml_get_widget (pages->xml, "back_button");
		gtk_widget_set_sensitive (widget, FALSE);
		gtk_container_foreach (GTK_CONTAINER (pages->history),
			web_history_clear_cb, pages->history);
	}
	
	if (forward) {
		widget = glade_xml_get_widget (
			pages->xml, "forward_menuitem");
		widget = glade_xml_get_widget (
			pages->xml, "forward_button");
		gtk_widget_set_sensitive (widget, FALSE);
		gtk_container_foreach (GTK_CONTAINER (pages->history_forward),
			web_history_clear_cb, pages->history_forward);
	}
}

void
web_history_go (GtkMenuItem *menuitem, WebHistory *current)
{
	WebData *data = current->parent;
	web_history_move (data->history, &data->history_forward, current);
	web_history_build (data->history, data->history_forward, data->parent);
	web_go (data, current->url, TRUE);
}

void
web_history_append (WebHistory *history, WebPages *pages)
{
	GtkWidget *widget;
	
	web_history_clear (pages, FALSE, TRUE);

	widget = gtk_menu_item_new_with_label (
		history->title ? history->title : history->url);
	gtk_widget_show (widget);
	/* TODO: Callback to go to url, forward */
	gtk_menu_shell_append (GTK_MENU_SHELL (pages->history), widget);
	
	g_signal_connect (G_OBJECT (widget), "activate",
		G_CALLBACK (web_history_go), history);

	widget = glade_xml_get_widget (pages->xml, "back_menuitem");
	gtk_widget_set_sensitive (widget, TRUE);	
	widget = glade_xml_get_widget (pages->xml, "back_button");
	gtk_widget_set_sensitive (widget, TRUE);	
}

void
web_history_build (GList *history, GList *history_forward, WebPages *pages)
{
	GtkWidget *widget;
	
	web_history_clear (pages, TRUE, TRUE);
	
	if (g_list_length (history) > 1) {
		for (; history->next; history = history->next) {
			WebHistory *h = history->data;
			GtkWidget *item = gtk_menu_item_new_with_label (
				h->title ? h->title : h->url);
			gtk_menu_shell_append (GTK_MENU_SHELL (pages->history),
				item);
			g_signal_connect (G_OBJECT (item), "activate",
				G_CALLBACK (web_history_go), h);
		}
		widget = glade_xml_get_widget (pages->xml, "back_menuitem");
		gtk_widget_set_sensitive (widget, TRUE);	
		widget = glade_xml_get_widget (pages->xml, "back_button");
		gtk_widget_set_sensitive (widget, TRUE);	
	}

	if (g_list_length (history_forward) > 0) {
		for (; history_forward;
		     history_forward = history_forward->next) {
			WebHistory *h = history_forward->data;
			GtkWidget *item = gtk_menu_item_new_with_label (
				h->title ? h->title : h->url);
			gtk_menu_shell_append (GTK_MENU_SHELL (
				pages->history_forward), item);
			g_signal_connect (G_OBJECT (item), "activate",
				G_CALLBACK (web_history_go), h);
		}
		widget = glade_xml_get_widget (pages->xml, "forward_menuitem");
		gtk_widget_set_sensitive (widget, TRUE);	
		widget = glade_xml_get_widget (pages->xml, "forward_button");
		gtk_widget_set_sensitive (widget, TRUE);	
	}
	
	gtk_widget_show_all (pages->history);
	gtk_widget_show_all (pages->history_forward);
}

void
web_history_move (GList *history, GList **history_forward, WebHistory *active)
{
	GList *hist_pos, *connected;

	/* Connect the lists */
	connected = g_list_concat (history, *history_forward);
	
	/* Find new active history item */
	hist_pos = g_list_find (connected, active);
	
	/* Disconnect lists at the new point */
	*history_forward = hist_pos->next;
	hist_pos->next = NULL;
	if (*history_forward)
		(*history_forward)->prev = NULL;	
}