/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* For further information about Alkacon Software GmbH, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.workplace.explorer.menu;
import org.opencms.file.CmsObject;
import org.opencms.workplace.explorer.CmsResourceUtil;
/**
* Defines a menu item rule to check the visibility of a context menu item in the explorer view.<p>
*
* @since 6.5.6
*/
public interface I_CmsMenuItemRule {
/** The request attribute name for the context information. */
String ATTR_CONTEXT_INFO = "__contextInfo";
/** A constant that signals that we are in the container page context. */
String CONTEXT_CONTAINERPAGE = "containerpage";
/** A constant that signals that we are in the sitemap context. */
String CONTEXT_SITEMAP = "sitemap";
/**
* Returns the visibility for the menu item.<p>
*
* The possible visibilities are:
* <ul>
* <li>{@link CmsMenuItemVisibilityMode#VISIBILITY_ACTIVE} menu item is active</li>
* <li>{@link CmsMenuItemVisibilityMode#VISIBILITY_INACTIVE} menu item is inactive (greyed out)</li>
* <li>{@link CmsMenuItemVisibilityMode#VISIBILITY_INVISIBLE} menu item is invisible</li>
* </ul>
*
* @param cms the current OpenCms user context
* @param resourceUtil the initialized resource utilities for which the menu item visibility is checked
* @return the visibility of the menu item
*/
CmsMenuItemVisibilityMode getVisibility(CmsObject cms, CmsResourceUtil[] resourceUtil);
/**
* Returns the visibility for the menu item, depending on the resource utilities and menu item rules.<p>
*
* @param cms the current OpenCms user context
* @param resourceUtil the initialized resource utilities for which the menu item visibility is checked
* @param rule the rules which are checked for visibility
* @return the visibility for the menu item
*/
CmsMenuItemVisibilityMode getVisibility(CmsObject cms, CmsResourceUtil[] resourceUtil, I_CmsMenuItemRule[] rule);
/**
* Returns if the rule for the menu item should be applied or not.<p>
*
* @param cms the current OpenCms user context
* @param resourceUtil the initialized resource utilities for which the menu item rule is checked
* @return true if the rule for the menu item should be applied, otherwise false
*/
boolean matches(CmsObject cms, CmsResourceUtil[] resourceUtil);
}