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) 2014, MPL CodeInside http://codeinside.ru */ package ru.codeinside.gses.webui.form; import com.google.common.collect.ImmutableList; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import com.vaadin.event.MouseEvents; import com.vaadin.terminal.ThemeResource; import com.vaadin.ui.Alignment; import com.vaadin.ui.Component; import com.vaadin.ui.ComponentContainer; import com.vaadin.ui.Embedded; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.VerticalLayout; import org.activiti.engine.ProcessEngine; import org.activiti.engine.impl.ServiceImpl; import org.activiti.engine.impl.context.Context; import org.activiti.engine.impl.interceptor.Command; import org.activiti.engine.impl.interceptor.CommandContext; import org.activiti.engine.impl.interceptor.CommandExecutor; import org.activiti.engine.impl.persistence.entity.ExecutionEntity; import org.apache.commons.lang.StringUtils; import ru.codeinside.adm.AdminServiceProvider; import ru.codeinside.adm.database.Employee; import ru.codeinside.adm.database.Organization; import ru.codeinside.gses.API; import ru.codeinside.gses.activiti.forms.FormID; import ru.codeinside.gses.form.FormEntry; import ru.codeinside.gses.service.BidID; import ru.codeinside.gses.service.F2; import ru.codeinside.gses.service.Fn; import ru.codeinside.gses.service.Functions; import ru.codeinside.gses.webui.Flash; import ru.codeinside.gses.webui.components.api.WithTaskId; import ru.codeinside.gses.webui.eventbus.TaskChanged; import ru.codeinside.gses.webui.utils.Components; import ru.codeinside.gses.webui.wizard.Wizard; import ru.codeinside.gses.webui.wizard.WizardStep; import ru.codeinside.gses.webui.wizard.event.WizardCancelledEvent; import ru.codeinside.gses.webui.wizard.event.WizardCompletedEvent; import ru.codeinside.gses.webui.wizard.event.WizardProgressListener; import ru.codeinside.gses.webui.wizard.event.WizardStepActivationEvent; import ru.codeinside.gses.webui.wizard.event.WizardStepSetChangedEvent; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.Serializable; import java.net.HttpURLConnection; import java.net.URL; import java.util.LinkedHashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.logging.Logger; import static com.vaadin.ui.Window.Notification.TYPE_ERROR_MESSAGE; import static com.vaadin.ui.Window.Notification.TYPE_WARNING_MESSAGE; final public class TaskForm extends VerticalLayout implements WithTaskId { private static final long serialVersionUID = 1L; final static ThemeResource EDITOR_ICON = new ThemeResource("../custom/icon/linedpaperpencil32.png"); final static ThemeResource VIEW_ICON = new ThemeResource("../custom/icon/paper32.png"); private final FormID id; private final ImmutableList<FormSeq> flow; private final FormFlow formFlow; private final CloseListener closeListener; private final DataAccumulator accumulator; final Wizard wizard; private Logger log = Logger.getLogger(TaskForm.class.getName()); public interface CloseListener extends Serializable { void onFormClose(TaskForm form); } final Embedded editorIcon; final HorizontalLayout header; final Embedded viewIcon; Component mainContent; public TaskForm(final FormDescription formDesc, final CloseListener closeListener, final DataAccumulator accumulator) { this.closeListener = closeListener; flow = formDesc.flow; id = formDesc.id; formFlow = new FormFlow(id); this.accumulator = accumulator; header = new HorizontalLayout(); header.setWidth(100, UNITS_PERCENTAGE); header.setSpacing(true); addComponent(header); editorIcon = new Embedded(null, EDITOR_ICON); editorIcon.setDescription(""); editorIcon.setStyleName("icon-inactive"); editorIcon.setHeight(32, UNITS_PIXELS); editorIcon.setWidth(32, UNITS_PIXELS); editorIcon.setImmediate(true); header.addComponent(editorIcon); header.setComponentAlignment(editorIcon, Alignment.BOTTOM_CENTER); if (flow.get(0) instanceof FormDataSource) { viewIcon = new Embedded(null, VIEW_ICON); viewIcon.setDescription(" ?"); viewIcon.setStyleName("icon-inactive"); viewIcon.setHeight(32, UNITS_PIXELS); viewIcon.setWidth(32, UNITS_PIXELS); viewIcon.setImmediate(true); header.addComponent(viewIcon); header.setComponentAlignment(viewIcon, Alignment.BOTTOM_CENTER); editorIcon.addListener(new MouseEvents.ClickListener() { @Override public void click(MouseEvents.ClickEvent event) { if (mainContent != wizard) { TaskForm.this.replaceComponent(mainContent, wizard); TaskForm.this.setExpandRatio(wizard, 1f); mainContent = wizard; editorIcon.setStyleName("icon-inactive"); viewIcon.setStyleName("icon-active"); } } }); viewIcon.addListener(new MouseEvents.ClickListener() { @Override public void click(MouseEvents.ClickEvent event) { if (mainContent == wizard && flow.get(0) instanceof FormDataSource) { FormDataSource dataSource = (FormDataSource) flow.get(0); Map<String, String> response = null; String serviceLocation = AdminServiceProvider.get() .getSystemProperty(API.PRINT_TEMPLATES_SERVICELOCATION); String json = buildJsonStringWithFormData(dataSource); boolean responseContainsTypeKey = false; if (serviceLocation != null && !serviceLocation.isEmpty() && json != null && !json.isEmpty()) { response = callPrintService(serviceLocation, json); if (response != null && response.containsKey("type")) { responseContainsTypeKey = true; log.info("PRINT SERVICE. Response type: " + response.get("type")); } else { log.info("PRINT SERVICE. Response type: null"); } } PrintPanel printPanel; if (responseContainsTypeKey && response.get("type").equals("success") && response.get("content") != null && !response.get("content").isEmpty()) { printPanel = new PrintPanel(response.get("content"), getApplication()); } else { printPanel = new PrintPanel(dataSource, getApplication(), formDesc.procedureName, id.taskId); } TaskForm.this.replaceComponent(wizard, printPanel); TaskForm.this.setExpandRatio(printPanel, 1f); mainContent = printPanel; editorIcon.setStyleName("icon-active"); viewIcon.setStyleName("icon-inactive"); editorIcon.setVisible(true); } } }); viewIcon.setStyleName("icon-active"); viewIcon.setVisible(true); } else { viewIcon = null; } VerticalLayout labels = new VerticalLayout(); labels.setSpacing(true); header.addComponent(labels); header.setComponentAlignment(labels, Alignment.MIDDLE_LEFT); header.setExpandRatio(labels, 1f); addLabel(labels, formDesc.procedureName, "h1"); addLabel(labels, formDesc.processDefinition.getDescription(), null); if (formDesc.task != null) { addLabel(labels, formDesc.task.getName(), "h2"); addLabel(labels, formDesc.task.getDescription(), null); } wizard = new Wizard(accumulator); wizard.setImmediate(true); wizard.addListener(new ProgressActions()); for (FormSeq seq : flow) { wizard.addStep(new FormStep(seq, formFlow, wizard)); } mainContent = wizard; addComponent(wizard); setExpandRatio(wizard, 1f); if (formDesc.task != null) { setMargin(true); } else { // ?? ? setMargin(true, false, false, false); } setImmediate(true); setSpacing(true); setSizeFull(); setExpandRatio(wizard, 1f); } private void addLabel(ComponentContainer container, String text, String style) { text = StringUtils.trimToNull(text); if (text != null) { Label label = new Label(text); if (style != null) { label.setStyleName(style); } container.addComponent(label); } } @Override public String getTaskId() { return id.taskId; } void complete() { try { final boolean processed; final BidID bidID; if (id.taskId == null) { processed = true; bidID = Functions.withEngine( new StartTaskFormSubmitter(id.processDefinitionId, formFlow.getForms(), accumulator)); } else { bidID = null; processed = Functions .withEngine(new TaskFormSubmitter(id.taskId, formFlow.getForms(), accumulator)); } Flash.fire(new TaskChanged(this, id.taskId)); if (!processed) { getWindow().showNotification("", " ?", TYPE_ERROR_MESSAGE); } if (bidID != null) { getWindow().showNotification("? " + bidID.bidId + " !", TYPE_WARNING_MESSAGE); } close(); } catch (Exception e) { Components.showException(getWindow(), e); } } void close() { if (closeListener != null) { closeListener.onFormClose(this); } } final class ProgressActions implements WizardProgressListener { @Override public void activeStepChanged(WizardStepActivationEvent event) { if (viewIcon != null) { List<WizardStep> steps = event.getWizard().getSteps(); WizardStep step = event.getActivatedStep(); viewIcon.setVisible(steps.indexOf(step) == 0); } } @Override public void stepSetChanged(WizardStepSetChangedEvent unusedEvent) { } @Override public void wizardCancelled(WizardCancelledEvent unusedEvent) { close(); } @Override public void wizardCompleted(WizardCompletedEvent unusedEvent) { complete(); } } private String buildJsonStringWithFormData(FormDataSource dataSource) { String taskId = getTaskId(); String procedureCode = getProcedureCode(taskId); String organizationId = getOrganizationId(); String userTaskId = null; if (taskId != null && !taskId.isEmpty()) { userTaskId = getUserTaskId(taskId); } List<Map<String, String>> elements = getElements(dataSource); Map<String, Object> data = new LinkedHashMap<String, Object>(); data.put("procedure_id", procedureCode); data.put("organization_id", organizationId); data.put("task_id", userTaskId); data.put("elements", elements); Gson gson = new Gson(); return gson.toJson(data); } private List<Map<String, String>> getElements(FormDataSource dataSource) { List<Map<String, String>> result = new LinkedList<Map<String, String>>(); FormEntry formEntry = dataSource.createFormTree(); FormEntry[] children = formEntry.children; for (FormEntry childEntry : children) { Map<String, String> element = new LinkedHashMap<String, String>(); element.put("name", childEntry.id); element.put("value", (childEntry.value == null || "value".equals(childEntry.value)) ? "" : childEntry.value); result.add(element); } return result; } private Map<String, String> callPrintService(String serviceLocation, String json) { HttpURLConnection connection = null; Map<String, String> result = null; try { URL url = new URL(serviceLocation); connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); connection.setDoOutput(true); connection.setConnectTimeout(5000); connection.setReadTimeout(5000); String postParameters = "data=" + json; OutputStream os = new BufferedOutputStream(connection.getOutputStream()); os.write(postParameters.getBytes("UTF-8")); os.flush(); os.close(); BufferedReader input = new BufferedReader(new InputStreamReader(connection.getInputStream())); log.info("PRINT SERVICE. Response code: " + connection.getResponseCode()); String line; StringBuffer stringBuffer = new StringBuffer(); while ((line = input.readLine()) != null) { stringBuffer.append(line); } input.close(); result = new Gson().fromJson(stringBuffer.toString(), new TypeToken<Map<String, String>>() { }.getType()); } catch (IOException e) { e.printStackTrace(); } finally { if (connection != null) { connection.disconnect(); } } return result; } private String getProcedureCode(String taskId) { if (taskId != null && !taskId.isEmpty()) { return String.valueOf(AdminServiceProvider.get().getBidByTask(taskId).getProcedure().getRegisterCode()); } else if (id.processDefinitionId != null && !id.processDefinitionId.isEmpty()) { return String.valueOf( AdminServiceProvider.get().getProcedureCodeByProcessDefinitionId(id.processDefinitionId)); } else { return null; } } private String getOrganizationId() { Employee user = AdminServiceProvider.get().findEmployeeByLogin(Flash.login()); Organization organization = user.getOrganization(); if (organization != null) { return organization.getId().toString(); } else { return null; } } private String getUserTaskId(String taskId) { return Fn.withEngine(new GetUserTaskId(), Flash.login(), taskId); } final private static class GetUserTaskId implements F2<String, String, String> { @Override public String apply(ProcessEngine engine, String login, String taskId) { CommandExecutor commandExecutor = ((ServiceImpl) engine.getFormService()).getCommandExecutor(); return String.valueOf(commandExecutor.execute(new GetUserTaskIdCommand(taskId))); } final private static class GetUserTaskIdCommand implements Command { private final String taskId; GetUserTaskIdCommand(String taskId) { this.taskId = taskId; } @Override public Object execute(CommandContext commandContext) { String processInstanceId = AdminServiceProvider.get().getBidByTask(taskId).getProcessInstanceId(); ExecutionEntity execution = Context.getCommandContext().getExecutionManager() .findExecutionById(processInstanceId); return execution.getActivity().getId(); } } } }