<?php
 
# original source :
# http://www.kksou.com/php-gtk2/articles/set-up-menu-and-radio-menu---Part-4---allow-Alt-F-Alt-N.php
 
 
 
// class Menu
class PhpGtkMenu extends GtkVbox{
    var $prev_keyval = 0;
    var $prev_state = 0;
    var $prev_keypress = '';
 
    function __construct($menu_definition, $accel_group) {
 
                parent::__construct();
 
        $this->menu_definition = $menu_definition;
 
        $menubar = new GtkMenuBar();
                # $menubar = $this;
        $this->pack_start($menubar, 0, 0);
 
        foreach($menu_definition as $toplevel => $sublevels) {
            $top_menu = new GtkMenuItem($toplevel);
            $menubar->append($top_menu);
            $menu = new GtkMenu();
            $top_menu->set_submenu($menu);
 
            // let's ask php-gtk to tell us when user press the 2nd Alt key
            $menu->connect('key-press-event', array(&$this, 'on_menu_keypress'), $toplevel); // note 1
 
            foreach($sublevels as $submenu) {
                if (strpos("$submenu", '|') === false) {
                    $accel_key = '';
                } else {
                    list($submenu, $accel_key) = explode('|', $submenu);
                }
 
                if (is_array($submenu)) { // set up radio menus
                    $i=0;
                    $radio[0] = null;
                    foreach($submenu as $radio_item) {
                        $radio[$i] = new GtkRadioMenuItem($radio[0], $radio_item);
                        # $radio[$i]->connect('toggled', array(&$this, "on_toggle"));
                        $menu->append($radio[$i]);
                        ++$i;
                    }
                    $radio[0]->set_active(1); // select the first item
                } else {
                    if ($submenu=='---') {
                        $menu->append(new GtkSeparatorMenuItem());
                    } else {
                        $submenu2 = str_replace('_', '', $submenu);
                        $submenu2 = str_replace(' ', '_', $submenu2);
                        $stock_image_name = 'Gtk::STOCK_'.strtoupper($submenu2);
                        if (defined($stock_image_name)) {
                            $menu_item = new GtkImageMenuItem(constant($stock_image_name));
                        } else {
                            $menu_item = new GtkMenuItem($submenu);
                        }
                        # if ($accel_key!='') {
                        #    $menu_item->add_accelerator("activate", $accel_group, ord($accel_key), Gdk::CONTROL_MASK, 1);
                        # }
 
                        $menu->append($menu_item);
                        $menu_item->connect('activate', array(&$this, 'on_menu_select'));
                        $this->menuitem[$toplevel][$submenu] = $menu_item; // note 2
                    }
                }
            }
        }
    }
 
    // process radio menu selection
    function on_toggle($radio) {
        $label = $radio->child->get_label();
        $active = $radio->get_active();
        echo("radio menu selected: $label\n");
    }
 
    // process menu item selection
    function on_menu_select($menu_item) {
        $item = $menu_item->child->get_label();
        echo "menu selected: $item\n";
        if ($item=='E_xit') Gtk::main_quit();
    }
 
    // processing of menu keypress
    function on_menu_keypress($menu, $event, $toplevel) {
        if (!$event->state & Gdk::MOD1_MASK) return false; // note 3
 
        // get the ascii equivalent of the keypress
        $keypress = '';
        if ($event->keyval<255) {
            $keypress = chr($event->keyval); // ascii equivalent
            $keypress = strtolower($keypress); // convert to lowercase
        }
 
        $match = 0; // flag to see if there's a match
        foreach($this->menu_definition[$toplevel] as $submenu) {
            if (!preg_match("/.*_([a-zA-Z0-9]).*/", "$submenu", $matches)) continue; // note 4
            $key2 = strtolower($matches[1]); // convert to lowercase
            if ($keypress==$key2) { // check if there's a match
                if (strpos("$submenu", '|') === false) {
                    $accel_key = '';
                } else {
                    list($submenu, $accel_key) = explode('|', $submenu); // remove any accelerator
                }
                $menuitem = $this->menuitem[$toplevel][$submenu]; // get the ID
                $menuitem->activate(); // simulate a click
                $menu->popdown(); // close the toplevel menu
                $match = 1; // set the match flag
                break;
            }
        }
        return $match; // return control back to php-gtk
    }
}

?>

<?php
 
error_reporting(E_ALL);
 
require_once('PhpGtkMenu.php');
 
// define menu definition
$menu_definition = array(
    '_File' => array('_New|N', '_Open|O', '_Close|C', '---', '_Save|S', 'Save _As','---', 'E_xit'),
    '_Edit' => array('Cu_t|X', '_Copy|C', '_Paste|V', '---', 'Select _All|A', '---', '_Undo|Z','_Redo|Y'),
    '_Test' => array('Test_1|1', 'Test_2|2', 'Test_3|3', '---',
                array('Selection 1', 'Selection 2', 'Selection 3'),
                '---', 'Test_4|4')
);
$accel_group = new GtkAccelGroup();
$menu = new PhpGtkMenu($menu_definition, $accel_group);
 
 
$window = new GtkWindow();
$window->set_size_request(400, 150);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
 
$vbox->pack_start($menu, 0, 0);
 
$accel_group = new GtkAccelGroup();
$window->add_accel_group($accel_group);
 
// display title
$title = new GtkLabel("Menu and RadioMenuItem - Part 4");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$vbox->pack_start($title);
$vbox->pack_start(new GtkLabel("To choose File New,"));
$vbox->pack_start(new GtkLabel("the default php-gtk requires you to choose Alt-F followed by N."));
$vbox->pack_start(new GtkLabel("Now Alt-F Alt-N also works!"));
 
$window->show_all();
Gtk::main();
?>