001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.workflowinstances.action;
016    
017    import com.liferay.portal.kernel.servlet.SessionErrors;
018    import com.liferay.portal.kernel.util.Constants;
019    import com.liferay.portal.kernel.util.GetterUtil;
020    import com.liferay.portal.kernel.util.ParamUtil;
021    import com.liferay.portal.kernel.util.WebKeys;
022    import com.liferay.portal.kernel.workflow.WorkflowConstants;
023    import com.liferay.portal.kernel.workflow.WorkflowException;
024    import com.liferay.portal.kernel.workflow.WorkflowHandler;
025    import com.liferay.portal.kernel.workflow.WorkflowHandlerRegistryUtil;
026    import com.liferay.portal.kernel.workflow.WorkflowInstance;
027    import com.liferay.portal.kernel.workflow.WorkflowInstanceManagerUtil;
028    import com.liferay.portal.model.Group;
029    import com.liferay.portal.model.Layout;
030    import com.liferay.portal.security.auth.PrincipalException;
031    import com.liferay.portal.service.WorkflowInstanceLinkLocalServiceUtil;
032    import com.liferay.portal.struts.PortletAction;
033    import com.liferay.portal.theme.ThemeDisplay;
034    
035    import java.io.Serializable;
036    
037    import java.util.Map;
038    
039    import javax.portlet.ActionRequest;
040    import javax.portlet.ActionResponse;
041    import javax.portlet.PortletConfig;
042    import javax.portlet.RenderRequest;
043    import javax.portlet.RenderResponse;
044    
045    import org.apache.struts.action.ActionForm;
046    import org.apache.struts.action.ActionForward;
047    import org.apache.struts.action.ActionMapping;
048    
049    /**
050     * @author Marcellus Tavares
051     */
052    public class EditWorkflowInstanceAction extends PortletAction {
053    
054            @Override
055            public void processAction(
056                            ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
057                            ActionRequest actionRequest, ActionResponse actionResponse)
058                    throws Exception {
059    
060                    String cmd = ParamUtil.getString(actionRequest, Constants.CMD);
061    
062                    try {
063                            String redirect = null;
064    
065                            if (cmd.equals(Constants.DELETE)) {
066                                    redirect = deleteInstance(actionRequest);
067                            }
068                            else if (cmd.equals(Constants.SIGNAL)) {
069                                    signalInstance(actionRequest);
070                            }
071    
072                            if (redirect == null) {
073                                    redirect = ParamUtil.getString(actionRequest, "redirect");
074                            }
075    
076                            sendRedirect(actionRequest, actionResponse, redirect);
077                    }
078                    catch (Exception e) {
079                            if (e instanceof PrincipalException ||
080                                    e instanceof WorkflowException) {
081    
082                                    SessionErrors.add(actionRequest, e.getClass().getName());
083    
084                                    setForward(actionRequest, "portlet.workflow_instances.error");
085                            }
086                            else {
087                                    throw e;
088                            }
089                    }
090            }
091    
092            @Override
093            public ActionForward render(
094                            ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
095                            RenderRequest renderRequest, RenderResponse renderResponse)
096                    throws Exception {
097    
098                    try {
099                            ActionUtil.getWorkflowInstance(renderRequest);
100                    }
101                    catch (Exception e) {
102                            if (e instanceof WorkflowException) {
103    
104                                    SessionErrors.add(renderRequest, e.getClass().getName());
105    
106                                    return mapping.findForward("portlet.workflow_instances.error");
107                            }
108                            else {
109                                    throw e;
110                            }
111                    }
112    
113                    String forward = getForward(
114                            renderRequest, "portlet.workflow_instances.edit_workflow_instance");
115    
116                    return mapping.findForward(forward);
117            }
118    
119            protected String deleteInstance(ActionRequest actionRequest)
120                    throws Exception {
121    
122                    ThemeDisplay themeDisplay = (ThemeDisplay)actionRequest.getAttribute(
123                            WebKeys.THEME_DISPLAY);
124    
125                    long workflowInstanceId = ParamUtil.getLong(
126                            actionRequest, "workflowInstanceId");
127    
128                    WorkflowInstance workflowInstance =
129                            WorkflowInstanceManagerUtil.getWorkflowInstance(
130                                    themeDisplay.getCompanyId(), workflowInstanceId);
131    
132                    Map<String, Serializable> workflowContext =
133                            workflowInstance.getWorkflowContext();
134    
135                    long companyId = GetterUtil.getLong(
136                            workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));
137                    long userId = GetterUtil.getLong(
138                            workflowContext.get(WorkflowConstants.CONTEXT_USER_ID));
139                    long groupId = GetterUtil.getLong(
140                            workflowContext.get(WorkflowConstants.CONTEXT_GROUP_ID));
141                    String className = GetterUtil.getString(
142                            workflowContext.get(WorkflowConstants.CONTEXT_ENTRY_CLASS_NAME));
143                    long classPK = GetterUtil.getLong(
144                            workflowContext.get(WorkflowConstants.CONTEXT_ENTRY_CLASS_PK));
145    
146                    WorkflowHandler workflowHandler =
147                            WorkflowHandlerRegistryUtil.getWorkflowHandler(className);
148    
149                    workflowHandler.updateStatus(
150                            WorkflowConstants.STATUS_DRAFT, workflowContext);
151    
152                    WorkflowInstanceLinkLocalServiceUtil.deleteWorkflowInstanceLink(
153                            companyId, groupId, className, classPK);
154    
155                    Layout layout = themeDisplay.getLayout();
156    
157                    Group layoutGroup = layout.getGroup();
158    
159                    if (layoutGroup.isControlPanel() &&
160                            (WorkflowInstanceManagerUtil.getWorkflowInstanceCount(
161                                    companyId, userId, null, null, null) == 0)) {
162    
163                            return themeDisplay.getURLControlPanel();
164                    }
165    
166                    return null;
167            }
168    
169            @Override
170            protected boolean isCheckMethodOnProcessAction() {
171                    return _CHECK_METHOD_ON_PROCESS_ACTION;
172            }
173    
174            protected void signalInstance(ActionRequest actionRequest)
175                    throws Exception {
176    
177                    ThemeDisplay themeDisplay = (ThemeDisplay)actionRequest.getAttribute(
178                            WebKeys.THEME_DISPLAY);
179    
180                    long workflowInstanceId = ParamUtil.getLong(
181                            actionRequest, "workflowInstanceId");
182    
183                    String transitionName = ParamUtil.getString(
184                            actionRequest, "transitionName");
185    
186                    WorkflowInstanceManagerUtil.signalWorkflowInstance(
187                            themeDisplay.getCompanyId(), themeDisplay.getUserId(),
188                            workflowInstanceId, transitionName, null);
189            }
190    
191            private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
192    
193    }