Java tutorial
/* * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * Copyright (c) 2013, MPL CodeInside http://codeinside.ru */ package ru.codeinside.gses.webui.components; import com.vaadin.terminal.Sizeable; import com.vaadin.ui.Button; import com.vaadin.ui.Component; import com.vaadin.ui.CustomComponent; import com.vaadin.ui.Label; import com.vaadin.ui.Panel; import com.vaadin.ui.Table; import com.vaadin.ui.TreeTable; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.Reindeer; import org.activiti.engine.delegate.Expression; import org.activiti.engine.impl.RepositoryServiceImpl; import org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior; import org.activiti.engine.impl.form.TaskFormHandler; import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity; import org.activiti.engine.impl.pvm.ReadOnlyProcessDefinition; import org.activiti.engine.impl.pvm.process.ActivityImpl; import org.activiti.engine.impl.task.TaskDefinition; import org.activiti.engine.repository.ProcessDefinition; import org.apache.commons.lang.StringUtils; import ru.codeinside.adm.AdminServiceProvider; import ru.codeinside.gses.activiti.forms.CustomTaskFormHandler; import ru.codeinside.gses.activiti.forms.api.definitions.BlockNode; import ru.codeinside.gses.activiti.forms.api.definitions.PropertyCollection; import ru.codeinside.gses.activiti.forms.api.definitions.PropertyNode; import ru.codeinside.gses.activiti.forms.api.definitions.PropertyTree; import ru.codeinside.gses.activiti.forms.api.definitions.VariableType; import ru.codeinside.gses.webui.Flash; import ru.codeinside.gses.webui.components.api.Changer; import java.util.Set; public class ProcessDefinitionShowUi extends CustomComponent { private static final long serialVersionUID = -2168823678201493358L; private final String processDefinitionId; private final Changer changer; public ProcessDefinitionShowUi(ProcessDefinition processDefinition, Changer changer) { processDefinitionId = processDefinition.getId(); this.changer = changer; setCompositionRoot(buildMainLayout()); setWidth(1100, Sizeable.UNITS_PIXELS); setHeight(600, Sizeable.UNITS_PIXELS); } private Component buildMainLayout() { VerticalLayout layout = new VerticalLayout(); layout.setSizeFull(); layout.setSpacing(true); layout.setMargin(true); Label label = new Label(); String name = getProcessDefinitionById(processDefinitionId).getName(); label.setCaption(name); label.setStyleName(Reindeer.LABEL_H2); Button showScheme = new Button(""); showScheme.addListener(new Button.ClickListener() { private static final long serialVersionUID = -5911713385519847639L; @Override public void buttonClick(com.vaadin.ui.Button.ClickEvent event) { VerticalLayout imageLayout = new VerticalLayout(); Button back = new Button("?"); back.addListener(new Button.ClickListener() { private static final long serialVersionUID = 4154712522487297925L; @Override public void buttonClick(com.vaadin.ui.Button.ClickEvent event) { changer.back(); } }); imageLayout.addComponent(back); imageLayout.setMargin(true); imageLayout.setSpacing(true); imageLayout.setWidth(1100, Sizeable.UNITS_PIXELS); imageLayout.setHeight(600, Sizeable.UNITS_PIXELS); final Panel panel = new Panel(); panel.getContent().setSizeUndefined(); TaskGraph tg = new TaskGraph(processDefinitionId, null); panel.addComponent(tg); panel.setSizeFull(); panel.setScrollable(true); imageLayout.addComponent(panel); imageLayout.setExpandRatio(back, 0.01f); imageLayout.setExpandRatio(panel, 0.99f); changer.change(imageLayout); } }); layout.addComponent(showScheme); Table table = new Table(); table.setSizeFull(); table.setImmediate(true); table.setSelectable(true); table.setSortDisabled(true); table.setPageLength(0); table.setSelectable(false); table.addContainerProperty("id", String.class, null); table.addContainerProperty("name", String.class, null); table.addContainerProperty("accessPermissions", Component.class, null); table.addContainerProperty("formProperties", Component.class, null); table.addContainerProperty("other", String.class, null); table.setColumnHeaders(new String[] { " ?", "?", /*" ?",*/ " ?", "? ", "? " }); table.setColumnExpandRatio("id", 0.1f); table.setColumnExpandRatio("name", 0.1f); table.setColumnExpandRatio("accessPermissions", 0.1f); table.setColumnExpandRatio("formProperties", 0.4f); table.setColumnExpandRatio("other", 0.2f); fillTable(table); layout.addComponent(label); layout.setExpandRatio(label, 1); layout.addComponent(table); layout.setExpandRatio(table, 40); return layout; } private ReadOnlyProcessDefinition getProcessDefinitionById(String definitionId) { return ((RepositoryServiceImpl) Flash.flash().getProcessEngine().getRepositoryService()) .getDeployedProcessDefinition(definitionId); } private void fillTable(Table table) { ReadOnlyProcessDefinition processDefinition = getProcessDefinitionById(processDefinitionId); int index = 1; for (ActivityImpl ac : ((ProcessDefinitionEntity) processDefinition).getActivities()) { String name = ac.getProperty("name") != null ? ac.getProperty("name").toString() : " ?"; String other = ""; VerticalLayout formProperties = new VerticalLayout(); Component accessSubjectsList = new VerticalLayout(); if (ac.getActivityBehavior() instanceof UserTaskActivityBehavior) { UserTaskActivityBehavior utab = (UserTaskActivityBehavior) ac.getActivityBehavior(); other = taskInfo(utab); TaskFormHandler taskFormHandler = utab.getTaskDefinition().getTaskFormHandler(); PropertyTree propertyTree = ((CustomTaskFormHandler) taskFormHandler).getPropertyTree(); formProperties.addComponent(createPropertyTable(propertyTree)); TaskDefinition taskDefinition = utab.getTaskDefinition(); Set<Expression> candidateUserIdExpressions = taskDefinition.getCandidateUserIdExpressions(); Set<Expression> candidateGroupIdExpressions = taskDefinition.getCandidateGroupIdExpressions(); accessSubjectsList = createAccessList(candidateUserIdExpressions, candidateGroupIdExpressions); } table.addItem( new Object[] { ac.getId(), name, /*component,*/ accessSubjectsList, formProperties, other }, index++); } } private Component createAccessList(Set<Expression> candidateUserIdExpressions, Set<Expression> candidateGroupIdExpressions) { VerticalLayout layout = new VerticalLayout(); layout.setSpacing(true); if (!candidateUserIdExpressions.isEmpty()) { VerticalLayout usersList = new VerticalLayout(); usersList.setCaption(":"); for (Expression e : candidateUserIdExpressions) { String fio = getUserFio(e); String formatted = StringUtils.isEmpty(fio) ? "" : ("(" + fio + ")"); usersList.addComponent(new Label(e.getExpressionText() + formatted + " ")); } layout.addComponent(usersList); } if (!candidateGroupIdExpressions.isEmpty()) { VerticalLayout groupsList = new VerticalLayout(); groupsList.setCaption(":"); for (Expression e : candidateGroupIdExpressions) { groupsList.addComponent(new Label(e.getExpressionText())); } layout.addComponent(groupsList); } return layout; } private Component createPropertyTable(PropertyTree propertyTree) { TreeTable table = new TreeTable(); table.setImmediate(true); table.setSelectable(false); table.setPageLength(0); table.setSortDisabled(true); table.addContainerProperty("id", String.class, null); table.addContainerProperty("name", String.class, null); table.addContainerProperty("variable", String.class, null); table.addContainerProperty("expression", String.class, null); table.addContainerProperty("type", String.class, null); table.setColumnHeaders(new String[] { "id", "name", "variable", "expression", "type" }); table.setPageLength(0); fillPropertyTable(table, propertyTree, -1); return table; } private int fillPropertyTable(TreeTable treeTable, PropertyCollection properties, int i) { int parentId = i; for (PropertyNode propertyNode : properties.getNodes()) { String id = "" + propertyNode.getId(); String name = "" + propertyNode.getName(); String variable = "" + propertyNode.getVariableName(); String expression = "" + propertyNode.getVariableExpression(); VariableType variableType = propertyNode.getVariableType(); String type = (variableType == null) ? "" : variableType.getName(); treeTable.addItem(new Object[] { id, name, variable, expression, type }, ++i); if (parentId >= 0) { treeTable.setParent(i, parentId); } if (propertyNode instanceof BlockNode) { i = fillPropertyTable(treeTable, (PropertyCollection) propertyNode, i); } else { treeTable.setChildrenAllowed(i, false); } } return i; } private String taskInfo(UserTaskActivityBehavior utab) { String result = ""; if (utab.getMultiInstanceActivityBehavior() != null) { result += " ElementVariable:" + utab.getMultiInstanceActivityBehavior().getCollectionElementVariable(); result += " Variable:" + utab.getMultiInstanceActivityBehavior().getCollectionVariable(); result += " Expression:" + utab.getMultiInstanceActivityBehavior().getCollectionExpression(); result += " ConditionExpression:" + utab.getMultiInstanceActivityBehavior().getCompletionConditionExpression(); result += " LoopCardinality:" + utab.getMultiInstanceActivityBehavior().getLoopCardinalityExpression(); } TaskDefinition taskDefinition = utab.getTaskDefinition(); if (taskDefinition.getAssigneeExpression() != null) { result += " Assignee:" + taskDefinition.getAssigneeExpression().toString(); } if (taskDefinition.getDescriptionExpression() != null) { result += " Description:" + taskDefinition.getDescriptionExpression().toString(); } if (taskDefinition.getDueDateExpression() != null) { result += " DueDate:" + taskDefinition.getDueDateExpression().toString(); } if (taskDefinition.getPriorityExpression() != null) { result += " Priority:" + taskDefinition.getPriorityExpression().toString(); } return result; } private String getUserFio(Expression e) { try { return AdminServiceProvider.get().getUserItem(e.getExpressionText()).getFio(); } catch (Exception er) { return ""; } } }