/*
 *  Copyright (C) 2002 Marco Pesenti Gritti
 *
 *  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 2, 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "ephy-gui.h"
#include "eel-gconf-extensions.h"

#include <ctype.h>
#include <string.h>
#include <bonobo/bonobo-i18n.h>
#include <libgnome/gnome-help.h>
#include <gtk/gtktreemodel.h>
#include <gtk/gtkmessagedialog.h>

/* Styles for tab labels */
GtkStyle *loading_text_style = NULL;
GtkStyle *new_text_style = NULL;

/**
 * gul_gui_menu_position_under_widget:
 */
void
ephy_gui_menu_position_under_widget (GtkMenu   *menu,
				     gint      *x,
				     gint      *y,
				     gboolean  *push_in,
				     gpointer	user_data)
{
	GtkWidget *w = GTK_WIDGET (user_data);
	gint screen_width, screen_height;
	GtkRequisition requisition;

	gdk_window_get_origin (w->window, x, y);
	*x += w->allocation.x;
	*y += w->allocation.y + w->allocation.height;

	gtk_widget_size_request (GTK_WIDGET (menu), &requisition);

	screen_width = gdk_screen_width ();
	screen_height = gdk_screen_height ();

	*x = CLAMP (*x, 0, MAX (0, screen_width - requisition.width));
	*y = CLAMP (*y, 0, MAX (0, screen_height - requisition.height));
}

gboolean
ephy_gui_confirm_overwrite_file (GtkWidget *parent, const char *filename)
{
	char *question;
	GtkWidget *dialog;
	gboolean res;

	if (!g_file_test (filename, G_FILE_TEST_EXISTS))
	{
		return TRUE;
	}

	question = g_strdup_printf (_("File %s will be overwritten.\n"
				    "If you choose yes, the contents will be lost.\n\n"
				    "Do you want to continue?"), filename);
	dialog = gtk_message_dialog_new (parent ? GTK_WINDOW(parent) : NULL,
			                 GTK_DIALOG_MODAL,
				         GTK_MESSAGE_QUESTION,
				         GTK_BUTTONS_YES_NO,
				         question);
	res = (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_YES);
	gtk_widget_destroy (dialog);
	g_free (question);

	return res;
}

void
ephy_gui_help (GtkWindow *parent,
	       const char *file_name,
               const char *link_id)
{
	GError *err = NULL;

	gnome_help_display (file_name, link_id, &err);

	if (err != NULL)
	{
		GtkWidget *dialog;
		dialog = gtk_message_dialog_new (parent,
						 GTK_DIALOG_DESTROY_WITH_PARENT,
						 GTK_MESSAGE_ERROR,
						 GTK_BUTTONS_OK,
						 _("Could not display help: %s"), err->message);
		g_signal_connect (G_OBJECT (dialog), "response",
				  G_CALLBACK (gtk_widget_destroy),
				  NULL);
		gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
		gtk_widget_show (dialog);
		g_error_free (err);
	}
}

#define ICON_NAME_MIME_PREFIX "gnome-mime-"

static char *
make_mime_name (const char *mime_type)
{
	char *mime_type_without_slashes, *icon_name;
	char *p;
                                                                                                                              
	if (mime_type == NULL)
	{
		return NULL;
	}
                                                                                                                              
	mime_type_without_slashes = g_strdup (mime_type);
                                                                                                                              
	while ((p = strchr(mime_type_without_slashes, '/')) != NULL)
		*p = '-';
                                                                                                                              
	icon_name = g_strconcat (ICON_NAME_MIME_PREFIX, mime_type_without_slashes, NULL);
	g_free (mime_type_without_slashes);
                                                                                                                              
	return icon_name;
}

GdkPixbuf *
ephy_gui_get_pixbuf_from_mime_type (const char *mime_type,
                                    int size)
{
	GdkPixbuf *pixbuf;
	GtkIconInfo *icon_info;
	GtkIconTheme *icon_theme;
	const char *icon;
	char *icon_name;

	icon_name = make_mime_name (mime_type);

	icon_theme = gtk_icon_theme_get_default ();
	g_return_val_if_fail (icon_theme != NULL, NULL);

	icon_info = gtk_icon_theme_lookup_icon
		(icon_theme, icon_name, size, -1);
	g_free (icon_name);

	/* try without specific size */
	if (icon_info == NULL)
	{
		icon_info = gtk_icon_theme_lookup_icon
			(icon_theme, icon_name, -1, -1);
	}

	/* no icon found */
	if (icon_info == NULL) return NULL;

	icon = gtk_icon_info_get_filename (icon_info);
	pixbuf = gdk_pixbuf_new_from_file (icon, NULL);
	g_return_val_if_fail (pixbuf != NULL, NULL);

	if (size != gtk_icon_info_get_base_size (icon_info))
	{
		GdkPixbuf *tmp;

		tmp = gdk_pixbuf_scale_simple (pixbuf, size, size,
					      GDK_INTERP_BILINEAR);
		g_object_unref (pixbuf);
		pixbuf = tmp;
	}

	gtk_icon_info_free (icon_info);

	return pixbuf;
}