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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; 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 org.camunda.bpm.engine.impl.task;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.camunda.bpm.engine.delegate.Expression;
import org.camunda.bpm.engine.delegate.TaskListener;
import org.camunda.bpm.engine.impl.form.FormDefinition;
import org.camunda.bpm.engine.impl.form.handler.TaskFormHandler;
import org.camunda.bpm.engine.impl.util.CollectionUtil;

/**
 * Container for task definition information gathered at parsing time.
 *
 * @author Joram Barrez
 */

public class TaskDefinition {
  protected String key;

  // assignment fields
  protected Expression nameExpression;
  protected Expression descriptionExpression;
  protected Expression assigneeExpression;
  protected Set candidateUserIdExpressions = new HashSet<>();
  protected Set candidateGroupIdExpressions = new HashSet<>();
  protected Expression dueDateExpression;
  protected Expression followUpDateExpression;
  protected Expression priorityExpression;

  // form fields
  protected TaskFormHandler taskFormHandler;
  protected FormDefinition formDefinition = new FormDefinition();

  // task listeners
  protected Map> taskListeners = new HashMap<>();
  protected Map> builtinTaskListeners = new HashMap<>();
  protected Map timeoutTaskListeners = new HashMap<>();

  public TaskDefinition(TaskFormHandler taskFormHandler) {
    this.taskFormHandler = taskFormHandler;
  }

  // getters and setters //////////////////////////////////////////////////////

  public Expression getNameExpression() {
    return nameExpression;
  }

  public void setNameExpression(Expression nameExpression) {
    this.nameExpression = nameExpression;
  }

  public Expression getDescriptionExpression() {
    return descriptionExpression;
  }

  public void setDescriptionExpression(Expression descriptionExpression) {
    this.descriptionExpression = descriptionExpression;
  }

  public Expression getAssigneeExpression() {
    return assigneeExpression;
  }

  public void setAssigneeExpression(Expression assigneeExpression) {
    this.assigneeExpression = assigneeExpression;
  }

  public Set getCandidateUserIdExpressions() {
    return candidateUserIdExpressions;
  }

  public void addCandidateUserIdExpression(Expression userId) {
    candidateUserIdExpressions.add(userId);
  }

  public Set getCandidateGroupIdExpressions() {
    return candidateGroupIdExpressions;
  }

  public void addCandidateGroupIdExpression(Expression groupId) {
    candidateGroupIdExpressions.add(groupId);
  }

  public Expression getPriorityExpression() {
    return priorityExpression;
  }

  public void setPriorityExpression(Expression priorityExpression) {
    this.priorityExpression = priorityExpression;
  }

  public TaskFormHandler getTaskFormHandler() {
    return taskFormHandler;
  }

  public void setTaskFormHandler(TaskFormHandler taskFormHandler) {
    this.taskFormHandler = taskFormHandler;
  }

  public String getKey() {
    return key;
  }

  public void setKey(String key) {
    this.key = key;
  }

  public Expression getDueDateExpression() {
    return dueDateExpression;
  }

  public void setDueDateExpression(Expression dueDateExpression) {
    this.dueDateExpression = dueDateExpression;
  }

  public Expression getFollowUpDateExpression() {
    return followUpDateExpression;
  }

  public void setFollowUpDateExpression(Expression followUpDateExpression) {
    this.followUpDateExpression = followUpDateExpression;
  }

  public Map> getTaskListeners() {
    return taskListeners;
  }

  public Map> getBuiltinTaskListeners() {
    return builtinTaskListeners;
  }

  public void setTaskListeners(Map> taskListeners) {
    this.taskListeners = taskListeners;
  }

  public List getTaskListeners(String eventName) {
    return taskListeners.get(eventName);
  }

  public List getBuiltinTaskListeners(String eventName) {
    return builtinTaskListeners.get(eventName);
  }

  public TaskListener getTimeoutTaskListener(String timeoutId) {
    return timeoutTaskListeners.get(timeoutId);
  }

  public void addTaskListener(String eventName, TaskListener taskListener) {
    CollectionUtil.addToMapOfLists(taskListeners, eventName, taskListener);
  }

  public void addBuiltInTaskListener(String eventName, TaskListener taskListener) {
    List listeners = taskListeners.get(eventName);
    if (listeners == null) {
      listeners = new ArrayList<>();
      taskListeners.put(eventName, listeners);
    }

    listeners.add(0, taskListener);

    CollectionUtil.addToMapOfLists(builtinTaskListeners, eventName, taskListener);
  }

  public void addTimeoutTaskListener(String timeoutId, TaskListener taskListener) {
    timeoutTaskListeners.put(timeoutId, taskListener);
  }

  public FormDefinition getFormDefinition() {
    return formDefinition;
  }

  public void setFormDefinition(FormDefinition formDefinition) {
    this.formDefinition = formDefinition;
  }

  public Expression getFormKey() {
    return formDefinition.getFormKey();
  }

  public void setFormKey(Expression formKey) {
    this.formDefinition.setFormKey(formKey);
  }

  public Expression getCamundaFormDefinitionKey() {
    return formDefinition.getCamundaFormDefinitionKey();
  }

  public String getCamundaFormDefinitionBinding() {
    return formDefinition.getCamundaFormDefinitionBinding();
  }

  public Expression getCamundaFormDefinitionVersion() {
    return formDefinition.getCamundaFormDefinitionVersion();
  }

}