/**

  * Copyright 2010 The Kuali Foundation Licensed under the

  * Educational Community License, Version 2.0 (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.osedu.org/licenses/ECL-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an "AS IS"

  * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

  * or implied. See the License for the specific language governing

  * permissions and limitations under the License.

  */

 package org.kuali.student.common.ui.client.application;

 import java.util.HashMap;

 import java.util.Map;

 import org.kuali.student.common.rice.authorization.PermissionType;

 import org.kuali.student.common.ui.shared.IdAttributes.IdType;

 /**

  * ViewContext can be used to pass along context information when switching or initializing a view.

  * 

  * For example a display view requires the id of the object to display, the view context can be used

  * to pass along that information from a different controller or view.

  *

  */

 public class ViewContext implements Comparable<ViewContext>{

         public static final String ID_ATR = "docId";

         public static final String ID_TYPE_ATR = "idType";

         private Map<String, String> attributes = new HashMap<String, String>();

         private String id = "";

         private IdType idType = null;

         // FIXME: change state to proper default or null

         private String state = "draft";

         private PermissionType permissionType;

         public String getId() {

                 return id;

         }

         /**

          * Set the id for this view context, this will appear as part of the address bar when used in

          * a controller, the controller can use this id to determine what to show (determine the context)

          */

         public void setId(String id) {

                 this.id = id;

         }

         public IdType getIdType() {

                 return idType;

         }

         /**

          * Set the type of id for this view context, this will appear as part of the address bar when used in

          * a controller

          */

         public void setIdType(IdType idType) {

                 this.idType = idType;

         }

         public void setIdType(String idTypeString){

                 this.idType = IdType.fromString(idTypeString);

         }

         public String getState() {

                 return state;

         }

         public void setState(String state) {

                 this.state = state;

         }

         public PermissionType getPermissionType() {

             return permissionType;

     }

         /**

          * Sets the type of permission needed to be at the the current view, this is interpreted by the controller

          * if set which checks with the server to see if the user has this kind of permission.  Doesn't appear in

          * the address bar

          */

         public void setPermissionType(PermissionType permissionType) {

             this.permissionType = permissionType;

     }

         @Override

         public int compareTo(ViewContext o) {

                 if(o.getId().equals(id) && o.getIdType() == idType && o.getAttributes().equals(attributes)){

                         return 0;

                 }

                 else{

                         return -1;

                 }

         }

     /**

      * Add an additional attribute to the view context, this will appear in the address bar like id

      * and type does

      */

     public void setAttribute(String key, String value) {

                 attributes.put(key, value);

         }

         public String getAttribute(String key){

                 return attributes.get(key);

         }

         public Map<String, String> getAttributes(){

                 return attributes;

         }

 }