/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.jbpm.eclipse.action;
import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.drools.compiler.builder.impl.KnowledgeBuilderConfigurationImpl;
import org.kie.api.definition.process.Node;
import org.kie.api.definition.process.NodeContainer;
import org.kie.api.definition.process.Process;
import org.drools.core.xml.SemanticModules;
import org.eclipse.core.internal.resources.File;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.jbpm.bpmn2.xml.BPMNDISemanticModule;
import org.jbpm.bpmn2.xml.BPMNExtensionsSemanticModule;
import org.jbpm.bpmn2.xml.BPMNSemanticModule;
import org.jbpm.compiler.xml.XmlProcessReader;
import org.jbpm.compiler.xml.processes.RuleFlowMigrator;
import org.jbpm.eclipse.JBPMEclipsePlugin;
import org.jbpm.process.core.context.variable.Variable;
import org.jbpm.process.core.context.variable.VariableScope;
import org.jbpm.ruleflow.core.RuleFlowProcess;
import org.jbpm.workflow.core.node.HumanTaskNode;
public class GenerateForms implements IObjectActionDelegate {
private IFile file;
private IWorkbenchPart targetPart;
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
this.targetPart = targetPart;
}
public void run(IAction action) {
if (file != null && file.exists()) {
try {
generateForms();
} catch (Throwable t) {
JBPMEclipsePlugin.log(t);
}
}
}
public void selectionChanged(IAction action, ISelection selection) {
if (selection instanceof IStructuredSelection) {
IStructuredSelection structured = (IStructuredSelection) selection;
if (structured.size() == 1) {
Object element = structured.getFirstElement();
if (element instanceof IFile) {
file = (IFile) element;
}
}
}
}
public void generateForms() {
try {
final IJavaProject javaProject = JavaCore.create(file.getProject());
if (javaProject == null || !javaProject.exists()) {
return;
}
InputStreamReader isr = new InputStreamReader(((File) file).getContents());
KnowledgeBuilderConfigurationImpl configuration = new KnowledgeBuilderConfigurationImpl();
SemanticModules modules = configuration.getSemanticModules();
modules.addSemanticModule(new BPMNSemanticModule());
modules.addSemanticModule(new BPMNDISemanticModule());
modules.addSemanticModule(new BPMNExtensionsSemanticModule());
XmlProcessReader xmlReader = new XmlProcessReader( modules, Thread.currentThread().getContextClassLoader() );
String xml = RuleFlowMigrator.convertReaderToString(isr);
Reader reader = new StringReader(xml);
List<Process> processes = xmlReader.read(reader);
if (processes != null && processes.size() == 1) {
final RuleFlowProcess process = (RuleFlowProcess) processes.get(0);
List<HumanTaskNode> result = new ArrayList<HumanTaskNode>();
processNodes(process.getNodes(), result);
final Map<String, TaskDef> tasks = new HashMap<String, TaskDef>();
for (HumanTaskNode node: result) {
String taskName = (String) node.getWork().getParameter("TaskName");
if (taskName == null) {
break;
}
TaskDef task = tasks.get(taskName);
if (task == null) {
task = new TaskDef(taskName);
tasks.put(taskName, task);
}
for (Map.Entry<String, String> entry: node.getInMappings().entrySet()) {
if (task.getInputParams().get(entry.getKey()) == null) {
VariableScope variableScope = (VariableScope) node.resolveContext(VariableScope.VARIABLE_SCOPE, entry.getValue());
if (variableScope != null) {
task.getInputParams().put(entry.getKey(), variableScope.findVariable(entry.getValue()).getType().getStringType());
}
}
}
for (Map.Entry<String, String> entry: node.getOutMappings().entrySet()) {
if (task.getOutputParams().get(entry.getKey()) == null) {
VariableScope variableScope = (VariableScope) node.resolveContext(VariableScope.VARIABLE_SCOPE, entry.getValue());
if (variableScope != null && !"outcome".equals(entry.getKey())) {
task.getOutputParams().put(entry.getKey(), variableScope.findVariable(entry.getValue()).getType().getStringType());
}
}
}
}
WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
public void execute(final IProgressMonitor monitor)
throws CoreException {
try {
IFolder folder = file.getProject().getFolder("src/main/resources");
for (TaskDef task: tasks.values()) {
String fileName = task.getTaskName() + ".ftl";
String output =
"<html>\n" +
"<body>\n" +
"<h2>" + task.getTaskName() + "</h2>\n" +
"<hr>\n" +
"<#if task.descriptions[0]??>\n" +
"Description: ${task.descriptions[0].text}<BR/>\n" +
"</#if>\n";
for (String input: task.getInputParams().keySet()) {
output += input + ": ${" + input + "}<BR/>\n";
}
output +=
"<form action=\"complete\" method=\"POST\" enctype=\"multipart/form-data\">\n";
for (String outputP: task.getOutputParams().keySet()) {
output += outputP + ": <input type=\"text\" name=\"" + outputP + "\" /><BR/>\n";
}
output +=
"<BR/>\n" +
"<input type=\"submit\" name=\"outcome\" value=\"Complete\"/>\n" +
"</form>\n" +
"</body>\n" +
"</html>";
IFile file = folder.getFile(fileName);
if (!file.exists()) {
file.create(new ByteArrayInputStream(output.getBytes()), true, monitor);
} else {
file.setContents(new ByteArrayInputStream(output.getBytes()), true, false, monitor);
}
}
String fileName = process.getId() + ".ftl";
String output =
"<html>\n" +
"<body>\n" +
"<h2>" + process.getName() + "</h2>\n" +
"<hr>\n" +
"<form action=\"complete\" method=\"POST\" enctype=\"multipart/form-data\">\n";
for (Variable variable: process.getVariableScope().getVariables()) {
if ("String".equals(variable.getType().getStringType())) {
output += variable.getName() + ": <input type=\"text\" name=\"" + variable.getName() + "\" /><BR/>\n";
}
}
output +=
"<input type=\"submit\" value=\"Complete\"/>\n" +
"</form>\n" +
"</body>\n" +
"</html>";
IFile file = folder.getFile(fileName);
if (!file.exists()) {
file.create(new ByteArrayInputStream(output.getBytes()), true, monitor);
} else {
file.setContents(new ByteArrayInputStream(output.getBytes()), true, false, monitor);
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
try {
new ProgressMonitorDialog(targetPart.getSite().getShell()).run(false, true, op);
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Throwable t) {
t.printStackTrace();
}
}
private static void processNodes(Node[] nodes, List<HumanTaskNode> result) {
for (Node node: nodes) {
if (node instanceof HumanTaskNode) {
result.add((HumanTaskNode) node);
} else if (node instanceof NodeContainer) {
processNodes(((NodeContainer) node).getNodes(), result);
}
}
}
private class TaskDef {
private String taskName;
private Map<String, String> inputParams = new HashMap<String, String>();
private Map<String, String> outputParams = new HashMap<String, String>();
public TaskDef(String taskName) {
this.taskName = taskName;
}
public String getTaskName() {
return taskName;
}
public Map<String, String> getInputParams() {
return inputParams;
}
public Map<String, String> getOutputParams() {
return outputParams;
}
}
}