Java tutorial
/* * Copyright 2011 JBoss Inc * * Licensed under the Apache License, Version 2.0 (the "License"); * 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.jbpm.formbuilder.client; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.fusesource.restygwt.client.Method; import org.fusesource.restygwt.client.Resource; import org.fusesource.restygwt.client.TextCallback; import org.jbpm.formapi.client.CommonGlobals; import org.jbpm.formapi.client.FormBuilderException; import org.jbpm.formapi.client.bus.ui.NotificationEvent; import org.jbpm.formapi.client.bus.ui.NotificationEvent.Level; import org.jbpm.formapi.client.effect.FBFormEffect; import org.jbpm.formapi.client.menu.FBMenuItem; import org.jbpm.formapi.client.validation.FBValidationItem; import org.jbpm.formapi.shared.api.FormItemRepresentation; import org.jbpm.formapi.shared.api.FormRepresentation; import org.jbpm.formapi.shared.api.RepresentationFactory; import org.jbpm.formapi.shared.form.FormEncodingException; import org.jbpm.formapi.shared.form.FormEncodingFactory; import org.jbpm.formbuilder.client.bus.ExistingTasksResponseEvent; import org.jbpm.formbuilder.client.bus.ExistingValidationsResponseEvent; import org.jbpm.formbuilder.client.bus.LoadServerFormResponseEvent; import org.jbpm.formbuilder.client.bus.MenuItemAddedEvent; import org.jbpm.formbuilder.client.bus.MenuItemAddedHandler; import org.jbpm.formbuilder.client.bus.MenuItemFromServerEvent; import org.jbpm.formbuilder.client.bus.MenuItemRemoveEvent; import org.jbpm.formbuilder.client.bus.MenuItemRemoveHandler; import org.jbpm.formbuilder.client.bus.MenuOptionAddedEvent; import org.jbpm.formbuilder.client.bus.PreviewFormResponseEvent; import org.jbpm.formbuilder.client.bus.ui.FormSavedEvent; import org.jbpm.formbuilder.client.bus.ui.RepresentationFactoryPopulatedEvent; import org.jbpm.formbuilder.client.bus.ui.TaskSelectedEvent; import org.jbpm.formbuilder.client.bus.ui.UserIsLoggedOutEvent; import org.jbpm.formbuilder.client.menu.items.CustomMenuItem; import org.jbpm.formbuilder.client.messages.I18NConstants; import org.jbpm.formbuilder.client.options.MainMenuOption; import org.jbpm.formbuilder.shared.form.MockFormDefinitionService; import org.jbpm.formbuilder.shared.task.TaskRef; import com.google.gwt.event.shared.EventBus; import com.google.gwt.http.client.Request; import com.google.gwt.http.client.RequestCallback; import com.google.gwt.http.client.RequestException; import com.google.gwt.http.client.Response; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.FormPanel; import com.google.gwt.user.client.ui.Hidden; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.xml.client.XMLParser; public class RestyFormBuilderModel implements FormBuilderService { private static final String DEFAULT_PACKAGE = "defaultPackage"; private final EventBus bus = CommonGlobals.getInstance().getEventBus(); private final I18NConstants i18n = FormBuilderGlobals.getInstance().getI18n(); private final XmlParseHelper helper = new XmlParseHelper(); private final MockFormDefinitionService mockFormService = new MockFormDefinitionService(); private final String contextPath; private String packageName = DEFAULT_PACKAGE; public RestyFormBuilderModel(String contextPath) { this.contextPath = contextPath; //registered to save the menu items bus.addHandler(MenuItemAddedEvent.TYPE, new MenuItemAddedHandler() { @Override public void onEvent(MenuItemAddedEvent event) { FBMenuItem item = event.getMenuItem(); saveMenuItem(event.getGroupName(), item); if (item instanceof CustomMenuItem) { CustomMenuItem customItem = (CustomMenuItem) item; String formItemName = customItem.getOptionName(); FormItemRepresentation formItem = customItem.getRepresentation(); saveFormItem(formItem, formItemName); } } }); //registered to delete the menu items bus.addHandler(MenuItemRemoveEvent.TYPE, new MenuItemRemoveHandler() { @Override public void onEvent(MenuItemRemoveEvent event) { FBMenuItem item = event.getMenuItem(); deleteMenuItem(event.getGroupName(), item); if (item instanceof CustomMenuItem) { CustomMenuItem customItem = (CustomMenuItem) item; String formItemName = customItem.getOptionName(); FormItemRepresentation formItem = customItem.getRepresentation(); deleteFormItem(formItemName, formItem); } } }); } @Override public void setPackageName(String packageName) { this.packageName = packageName; } @Override public void getMenuItems() { Resource resource = new Resource(URLBuilder.getMenuItemsURL(this.contextPath)); resource.get().send(new SimpleTextCallback(i18n.CouldntFindMenuItems()) { @Override public void onSuccess(Method method, String response) { if (method.getResponse().getStatusCode() == Response.SC_OK) { Map<String, List<FBMenuItem>> menuItems = helper.readMenuMap(response); for (String groupName : menuItems.keySet()) { for (FBMenuItem menuItem : menuItems.get(groupName)) { populateMockFormService(menuItem); bus.fireEvent(new MenuItemFromServerEvent(menuItem, groupName)); } } } else { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntFindMenuItems404())); } } }); } public void getCurrentRoles(final FormBuilderService.RolesResponseHandler handler) { Resource resource = new Resource(URLBuilder.getCurrentRolesURL(this.contextPath)); resource.get().send(new TextCallback() { @Override public void onSuccess(Method method, String response) { if (method.getResponse().getStatusCode() == Response.SC_OK) { List<String> roles = helper.readRoles(response); handler.onResponse(roles); } else { bus.fireEvent(new UserIsLoggedOutEvent()); } } @Override public void onFailure(Method method, Throwable exception) { bus.fireEvent(new UserIsLoggedOutEvent()); } }); } public void logout() { Resource resource = new Resource(URLBuilder.getLogoutURL(this.contextPath)); resource.post().send(new TextCallback() { @Override public void onSuccess(Method method, String response) { Window.Location.reload(); } @Override public void onFailure(Method method, Throwable exception) { Window.Location.reload(); } }); } @Override public void getMenuOptions() { Resource resource = new Resource(URLBuilder.getMenuOptionsURL(this.contextPath)); resource.get().send(new SimpleTextCallback(i18n.CouldntFindMenuOptions()) { @Override public void onSuccess(Method method, String response) { List<MainMenuOption> currentOptions = helper.readMenuOptions(response); for (MainMenuOption option : currentOptions) { bus.fireEvent(new MenuOptionAddedEvent(option)); } } }); } @Override public void saveForm(final FormRepresentation form) { Resource resource = new Resource(URLBuilder.saveFormURL(this.contextPath, this.packageName)); try { String json = FormEncodingFactory.getEncoder().encode(form); resource.post().text(json).send(new SimpleTextCallback(i18n.CouldntSaveForm()) { @Override public void onSuccess(Method method, String response) { int code = method.getResponse().getStatusCode(); if (code == Response.SC_CONFLICT) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.FormAlreadyUpdated())); } else if (code != Response.SC_CREATED) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.SaveFormUnkwnownStatus(String.valueOf(code)))); } else { String name = helper.getFormId(response); form.setLastModified(System.currentTimeMillis()); form.setSaved(true); form.setName(name); bus.fireEvent(new FormSavedEvent(form)); } } }); } catch (FormEncodingException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntDecodeForm(), e)); } } @Override public void saveFormItem(FormItemRepresentation formItem, String formItemName) { Resource resource = new Resource( URLBuilder.saveFormItemURL(this.contextPath, this.packageName, formItemName)); try { String xml = helper.asXml(formItemName, formItem); resource.post().xml(XMLParser.parse(xml)).send(new SimpleTextCallback(i18n.CouldntSaveFormItem()) { @Override public void onSuccess(Method method, String response) { int code = method.getResponse().getStatusCode(); if (code == Response.SC_CONFLICT) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.FormItemAlreadyUpdated())); } else if (code != Response.SC_CREATED) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.SaveFormItemUnknownStatus(String.valueOf(code)))); } else { String name = helper.getFormItemId(response); bus.fireEvent(new NotificationEvent(Level.INFO, i18n.FormItemSaved(name))); } } }); } catch (FormEncodingException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntDecodeFormItem(formItemName), e)); } } @Override public void deleteForm(FormRepresentation form) { Resource resource = new Resource( URLBuilder.deleteFormURL(this.contextPath, this.packageName, form.getName())); try { resource.delete().send(new RequestCallback() { @Override public void onError(Request request, Throwable exception) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingForm(""), exception)); } @Override public void onResponseReceived(Request request, Response response) { int code = response.getStatusCode(); if (code != Response.SC_ACCEPTED && code != Response.SC_NO_CONTENT && code != Response.SC_OK) { bus.fireEvent( new NotificationEvent(Level.WARN, i18n.ErrorDeletingForm(String.valueOf(code)))); } else { bus.fireEvent(new NotificationEvent(Level.INFO, i18n.FormDeleted())); } } }); } catch (RequestException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingForm(""), e)); } } @Override public void deleteFile(String url) throws FormBuilderException { Resource resource = new Resource(URLBuilder.deleteFileURL(this.contextPath, this.packageName, url)); try { resource.delete().send(new RequestCallback() { @Override public void onError(Request request, Throwable exception) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingFile(""), exception)); } @Override public void onResponseReceived(Request request, Response response) { int code = response.getStatusCode(); if (code != Response.SC_ACCEPTED && code != Response.SC_NO_CONTENT && code != Response.SC_OK) { bus.fireEvent( new NotificationEvent(Level.WARN, i18n.ErrorDeletingFile(String.valueOf(code)))); } else { bus.fireEvent(new NotificationEvent(Level.INFO, i18n.FileDeleted())); } } }); } catch (RequestException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingForm(""), e)); } } @Override public void getFiles(List<String> types, final FilesLoadedHandler handler) { String url = URLBuilder.getFilesURL(this.contextPath, this.packageName, types); Resource resource = new Resource(url); resource.get().send(new SimpleTextCallback(i18n.CouldntFindFiles("")) { @Override public void onSuccess(Method method, String response) { if (method.getResponse().getStatusCode() == Response.SC_OK) { List<String> list = helper.readFiles(response); handler.onFilesLoaded(list); } else { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntFindFiles(String.valueOf(method.getResponse().getStatusCode())))); } } }); } @Override public void deleteFormItem(String formItemName, FormItemRepresentation formItem) { Resource resource = new Resource( URLBuilder.deleteFormItemURL(this.contextPath, this.packageName, formItemName)); try { resource.delete().send(new RequestCallback() { @Override public void onError(Request request, Throwable exception) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingFormItem(""), exception)); } @Override public void onResponseReceived(Request request, Response response) { int code = response.getStatusCode(); if (code != Response.SC_ACCEPTED && code != Response.SC_NO_CONTENT && code != Response.SC_OK) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.ErrorDeletingFormItem(String.valueOf(code)))); } else { bus.fireEvent(new NotificationEvent(Level.INFO, i18n.FormItemDeleted())); } } }); } catch (RequestException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingFormItem(""), e)); } } @Override public void generateForm(FormRepresentation form, final String language, Map<String, Object> inputs) { Resource resource = new Resource(URLBuilder.generateFormURL(this.contextPath, language)); try { String xml = helper.asXml(form, inputs); resource.post().header(Resource.HEADER_ACCEPT, Resource.CONTENT_TYPE_TEXT).xml(XMLParser.parse(xml)) .send(new SimpleTextCallback(i18n.CouldntPreviewForm()) { @Override public void onSuccess(Method method, String urlResponse) { bus.fireEvent(new PreviewFormResponseEvent(urlResponse, language)); } }); } catch (FormEncodingException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntDecodeForm(), e)); } } @Override public void saveMenuItem(String groupName, final FBMenuItem item) { Resource resource = new Resource(URLBuilder.getMenuItemsURL(this.contextPath)); String xml = helper.asXml(groupName, item); try { resource.post().xml(XMLParser.parse(xml)).expect(201, 409).send(new RequestCallback() { @Override public void onError(Request request, Throwable exception) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntGenerateMenuItem(), exception)); } @Override public void onResponseReceived(Request request, Response response) { int code = response.getStatusCode(); NotificationEvent event; if (code == Response.SC_CREATED) { event = new NotificationEvent(Level.INFO, i18n.MenuItemSaved(item.getItemId())); } else { event = new NotificationEvent(Level.WARN, i18n.SaveMenuItemInvalidStatus(String.valueOf(code))); } bus.fireEvent(event); } }); } catch (RequestException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntSaveMenuItem(), e)); } } @Override public void deleteMenuItem(String groupName, FBMenuItem item) { Resource resource = new Resource(URLBuilder.getMenuItemsURL(this.contextPath)); String xml = helper.asXml(groupName, item); try { resource.delete().xml(XMLParser.parse(xml)).send(new RequestCallback() { @Override public void onError(Request request, Throwable exception) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingMenuItem(), exception)); } @Override public void onResponseReceived(Request request, Response response) { int code = response.getStatusCode(); if (code != Response.SC_ACCEPTED && code != Response.SC_NO_CONTENT && code != Response.SC_OK) { bus.fireEvent(new NotificationEvent(Level.WARN, i18n.DeleteMenuItemUnkownStatus(String.valueOf(code)))); } else { bus.fireEvent(new NotificationEvent(Level.INFO, i18n.MenuItemDeleted())); } } }); } catch (RequestException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ErrorDeletingMenuItem(), e)); } } @Override public void getExistingIoAssociations(final String filter) { String url = URLBuilder.getIoAssociationsURL(this.contextPath, this.packageName); Resource resource = new Resource(url); if (filter != null && !"".equals(filter)) { resource = resource.addQueryParam("q", filter); } resource.get().send(new SimpleTextCallback(i18n.CouldntReadTasks()) { @Override public void onSuccess(Method method, String response) { List<TaskRef> retval = helper.readTasks(response); bus.fireEventFromSource(new ExistingTasksResponseEvent(retval, filter), RestyFormBuilderModel.this); } }); } @Override public void selectIoAssociation(String pkgName, String processName, String taskName) { String url = URLBuilder.getIoAssociationURL(this.contextPath, pkgName, processName, taskName); Resource resource = new Resource(url); resource.get().send(new SimpleTextCallback(i18n.CouldntReadSingleIO()) { @Override public void onSuccess(Method method, String response) { List<TaskRef> tasks = helper.readTasks(response); if (tasks.size() == 1) { TaskRef singleTask = tasks.iterator().next(); bus.fireEvent(new TaskSelectedEvent(singleTask)); } } }); } @Override public void getExistingValidations() { Resource resource = new Resource(URLBuilder.getValidationsURL(this.contextPath)); resource.get().send(new SimpleTextCallback(i18n.CouldntReadValidations()) { @Override public void onSuccess(Method method, String response) { try { List<FBValidationItem> retval = helper.readValidations(response); bus.fireEvent(new ExistingValidationsResponseEvent(retval)); } catch (Exception e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntDecodeValidations(), e)); } } }); } @Override public void getForm(final String formName) { String url = URLBuilder.getFormURL(this.contextPath, this.packageName, formName); Resource resource = new Resource(url); resource.get().send(new SimpleTextCallback(i18n.CouldntFindForm(formName)) { @Override public void onSuccess(Method method, String response) { if (method.getResponse().getStatusCode() == Response.SC_OK) { List<FormRepresentation> list = helper.readForms(response); bus.fireEvent(new LoadServerFormResponseEvent(list.isEmpty() ? null : list.iterator().next())); } else { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntFindForm404(formName))); } } }); } @Override public void getForms() { String url = URLBuilder.getFormsURL(this.contextPath, this.packageName); Resource resource = new Resource(url); resource.get().send(new SimpleTextCallback(i18n.CouldntFindForms()) { @Override public void onSuccess(Method method, String response) { if (method.getResponse().getStatusCode() == Response.SC_OK) { List<FormRepresentation> list = helper.readForms(response); bus.fireEvent(new LoadServerFormResponseEvent(list)); } else { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntFindForms404())); } } }); } @Override public void populateRepresentationFactory() { String url = URLBuilder.getRepresentationMappingsURL(this.contextPath); Resource resource = new Resource(url); resource.get().send(new SimpleTextCallback(i18n.CouldntReadRepresentationMappings()) { @Override public void onSuccess(Method method, String response) { Map<String, String> repMap = helper.readPropertyMap(response); for (Map.Entry<String, String> entry : repMap.entrySet()) { RepresentationFactory.registerItemClassName(entry.getKey(), entry.getValue()); } bus.fireEvent(new RepresentationFactoryPopulatedEvent()); } }); } @Override public void loadFormTemplate(final FormRepresentation form, String language) { final String url = URLBuilder.loadFormTemplateURL(this.contextPath, language); Resource resource = new Resource(url); try { String xml = helper.asXml(form, null); resource.post().xml(XMLParser.parse(xml)).send(new SimpleTextCallback(i18n.CouldntExportTemplate()) { @Override public void onSuccess(Method method, String response) { String fileName = helper.getFileName(response); FormPanel auxiliarForm = new FormPanel(); auxiliarForm.setMethod(FormPanel.METHOD_GET); auxiliarForm.setAction(url); Hidden hidden1 = new Hidden("fileName"); hidden1.setValue(fileName); Hidden hidden2 = new Hidden("formName"); hidden2.setValue( form.getName() == null || "".equals(form.getName()) ? "template" : form.getName()); VerticalPanel vPanel = new VerticalPanel(); vPanel.add(hidden1); vPanel.add(hidden2); auxiliarForm.add(vPanel); RootPanel.get().add(auxiliarForm); auxiliarForm.submit(); } }); } catch (FormEncodingException e) { bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.CouldntDecodeForm(), e)); } } @Override public FormRepresentation toBasicForm(TaskRef task) { return mockFormService.createFormFromTask(task); } @Override public String getUploadFileURL() { return URLBuilder.uploadFileURL(this.contextPath, this.packageName); } @Override public String getUploadActionURL() { return URLBuilder.uploadActionURL(); } private void populateMockFormService(FBMenuItem item) { String className = item.getClass().getName(); List<String> effectClassNames = new ArrayList<String>(); if (item.getFormEffects() != null) { for (FBFormEffect effect : item.getFormEffects()) { effectClassNames.add(effect.getClass().getName()); } } if (item.getAllowedEvents() != null) { mockFormService.putActionsForItem(className, item.getAllowedEvents()); } mockFormService.putEffectsForItem(className, effectClassNames); } }