base_menu.php

<?php
abstract class BaseMenu
{
    protected $iconFile = "gui_skin://small_icons/folder.aai";
    protected $action = PLUGIN_OPEN_FOLDER_ACTION_ID;

    protected static function CompareCaption($a, $b)
    {
        $al = strtolower($a["caption"]);
        $bl = strtolower($b["caption"]);
        if ($al == $bl) {
            return 0;
        } else {
            return ($al > $bl) ? +1 : -1;
        }
    }

    protected function create_folder_view($items)
    {
        $folderItems = array();
        foreach ($items as $item) {
            $folderItems[] = array(
                PluginRegularFolderItem::media_url => $item["url"],
                PluginRegularFolderItem::caption => $item["caption"],
                PluginRegularFolderItem::view_item_params => array()
            );
        }

        return array(
            PluginFolderView::view_kind => PLUGIN_FOLDER_VIEW_REGULAR,
            PluginFolderView::data => array(
                PluginRegularFolderView::initial_range => array(
                    PluginRegularFolderRange::items => $folderItems,
                    PluginRegularFolderRange::total => count($folderItems),
                    PluginRegularFolderRange::count => count($folderItems),
                    PluginRegularFolderRange::more_items_available => false,
                    PluginRegularFolderRange::from_ndx => 0
                ),
                PluginRegularFolderView::view_params => array(
                    ViewParams::num_cols => 1,
                    ViewParams::num_rows => 11
                ),
                PluginRegularFolderView::base_view_item_params => array(
                    ViewItemParams::icon_path => $this->iconFile,
                    ViewItemParams::item_layout => HALIGN_LEFT,
                    ViewItemParams::icon_valign => VALIGN_TOP,
                    ViewItemParams::item_caption_dx => 60,
                    ViewItemParams::icon_dx => 10
                ),
                PluginRegularFolderView::not_loaded_view_item_params => array(),
                PluginRegularFolderView::actions => array(
                    GUI_EVENT_KEY_ENTER => array(
                        GuiAction::handler_string_id => $this->action
                    )
                )
            )
        );
    }

    abstract public function generate_menu();
}