content: /*
   * Copyright (C) 2015-2023 Emanuel Moecklin
   *
   * Licensed under the Apache 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.apache.org/licenses/LICENSE-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 com.onegravity.contactpicker.contact;
  
  import org.greenrobot.eventbus.EventBus;
  
  /**
   * The contact selection has changed.
   *
   * We need to:
   * - recalculate the number of selected contacts
   * - deselect groups if no contact is selected
   *
   * We could just use the regular listener mechanism to propagate changes for checked/un-checked
   * contacts but if the user selects "Check All / Un-check All" this would trigger a call for each
   * contact. Therefore the listener call is suppressed and a ContactSelectionChanged fired once all
   * contacts are checked / un-checked.
   *
   * Publisher: ContactFragment
   * Subscriber: ContactPickerActivity
   */
  public class ContactSelectionChanged {
  
      private static final ContactSelectionChanged sEvent = new ContactSelectionChanged();
  
      static void post() {
          EventBus.getDefault().post( sEvent );
      }
  
  }
  