com.visural.stereotyped.ui.Privilege.java Source code

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Here is the source code for com.visural.stereotyped.ui.Privilege.java

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/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Original Code is "stereotyped" (http://code.google.com/p/stereotyped).
 * 
 * The Initial Developer of the Original Code is Richard Nichols.
 * Portions created by Richard Nichols are Copyright (C) 2010
 * Richard Nichols. All Rights Reserved.
 * 
 * Alternatively, the contents of this file may be used under the terms
 * of the GNU Public License (the  "GPL"), in which case the
 * provisions of GPL License are applicable instead of those
 * above.  If you wish to allow use of your version of this file only
 * under the terms of the GPL and not to allow others to use
 * your version of this file under the MPL, indicate your decision by
 * deleting  the provisions above and replace  them with the notice and
 * other provisions required by the GPL.  If you do not delete
 * the provisions above, a recipient may use your version of this file
 * under either the MPL or the GPL License.
 */

package com.visural.stereotyped.ui;

import com.google.common.collect.Sets;
import com.visural.stereotyped.core.ServiceProvider;
import com.visural.stereotyped.ui.model.StereotypeUIMetaData;
import com.visural.stereotyped.ui.model.User;
import com.visural.stereotyped.ui.model.UserGroup;
import com.visural.stereotyped.ui.service.StereotypeService;
import com.visural.wicket.security.IClient;
import com.visural.wicket.security.IPrivilege;
import java.util.UUID;

/**
 * @version $Id$
 * @author Visural
 */
public class Privilege {
    public static final IPrivilege ADMINISTRATOR = new IPrivilege() {

        public boolean isGrantedToClient(IClient arg0) {
            if (arg0 == null || !(arg0 instanceof User)) {
                return false;
            } else {
                return ((User) arg0).getGroups().contains(UserGroup.ADMINISTRATORS.getName());
            }
        }
    };

    public static IPrivilege currentUserIsOwner(final UUID id) {
        return new IPrivilege() {
            public boolean isGrantedToClient(IClient arg0) {
                StereotypeUIMetaData meta = ServiceProvider.getServiceInstance(StereotypeService.class)
                        .readUIMeta(id);
                User u = (User) arg0;
                return meta.getOwner().equals(u.getId());
            }

        };
    }

    public static IPrivilege currentUserHasWriteAccess(final UUID id) {
        return new IPrivilege() {

            public boolean isGrantedToClient(IClient arg0) {
                if (id == null) {
                    return true;
                }
                StereotypeUIMetaData meta = ServiceProvider.getServiceInstance(StereotypeService.class)
                        .readUIMeta(id);
                User u = (User) arg0;
                return ADMINISTRATOR.isGrantedToClient(arg0) || meta.getOwner().equals(u.getId())
                        || meta.getEditUsers().contains(u.getId())
                        || !Sets.intersection(meta.getEditGroups(), u.getGroups()).isEmpty();
            }

        };
    }

    public static IPrivilege currentUserHasReadAccess(final UUID id) {
        return new IPrivilege() {

            public boolean isGrantedToClient(IClient arg0) {
                StereotypeUIMetaData meta = ServiceProvider.getServiceInstance(StereotypeService.class)
                        .readUIMeta(id);
                User u = (User) arg0;
                return ADMINISTRATOR.isGrantedToClient(arg0) || meta.getOwner().equals(u.getId())
                        || meta.getViewUsers().contains(u.getId()) || meta.getEditUsers().contains(u.getId())
                        || !Sets.intersection(meta.getEditGroups(), u.getGroups()).isEmpty()
                        || !Sets.intersection(meta.getViewGroups(), u.getGroups()).isEmpty();
            }

        };
    }

    public static IPrivilege currentUserIsOwnerOrAdmin(final UUID id) {
        return new IPrivilege() {

            public boolean isGrantedToClient(IClient arg0) {
                return ADMINISTRATOR.isGrantedToClient(arg0) || currentUserIsOwner(id).isGrantedToClient(arg0);
            }

        };
    }
}