Java tutorial
/* * Copyright 2017 Marcus Portmann * * 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 guru.mmp.application.web.template.pages; //~--- non-JDK imports -------------------------------------------------------- import guru.mmp.application.security.*; import guru.mmp.application.security.SecurityException; import guru.mmp.application.web.WebApplicationException; import guru.mmp.application.web.WebSession; import guru.mmp.application.web.pages.WebPageSecurity; import guru.mmp.application.web.template.TemplateSecurity; import guru.mmp.application.web.template.components.Dialog; import guru.mmp.application.web.template.components.DropdownMenu; import guru.mmp.application.web.template.components.PagingNavigator; import guru.mmp.application.web.template.data.GroupDataProvider; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.link.Link; import org.apache.wicket.markup.repeater.Item; import org.apache.wicket.markup.repeater.ReuseIfModelsEqualStrategy; import org.apache.wicket.markup.repeater.data.DataView; import org.apache.wicket.model.Model; import org.apache.wicket.model.PropertyModel; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.inject.Inject; import java.util.ArrayList; import java.util.List; //~--- JDK imports ------------------------------------------------------------ /** * The <code>GroupAdministrationPage</code> class implements the * "Group Administration" page for the Web Application Template. * * @author Marcus Portmann */ @WebPageSecurity(TemplateSecurity.FUNCTION_CODE_GROUP_ADMINISTRATION) public class GroupAdministrationPage extends TemplateWebPage { /* Logger */ private static final Logger logger = LoggerFactory.getLogger(GroupAdministrationPage.class); private static final long serialVersionUID = 1000000; /* Security Service */ @Inject private ISecurityService securityService; /** * The user directory the groups are associated with. */ private UserDirectory userDirectory; /** * Constructs a new <code>GroupAdministrationPage</code>. */ public GroupAdministrationPage() { super("Groups"); try { /* * Retrieve the list of user directories for the organisation the currently logged on user * is associated with and default to the first user directory. */ List<UserDirectory> userDirectories = getUserDirectories(); userDirectory = userDirectories.get(0); /* * The table container, which allows the table and its associated navigator to be updated * using AJAX. */ WebMarkupContainer tableContainer = new WebMarkupContainer("tableContainer"); tableContainer.setOutputMarkupId(true); add(tableContainer); // The dialog used to confirm the removal of a group RemoveDialog removeDialog = new RemoveDialog(tableContainer); add(removeDialog); // The "addLink" link Link<Void> addLink = new Link<Void>("addLink") { private static final long serialVersionUID = 1000000; @Override public void onClick() { AddGroupPage page = new AddGroupPage(getPageReference(), userDirectory.getId()); setResponsePage(page); } }; tableContainer.add(addLink); GroupDataProvider dataProvider = new GroupDataProvider(userDirectory.getId()); // The "userDirectoryDropdownMenu" dropdown button DropdownMenu<UserDirectory> userDirectoryDropdownMenu = new DropdownMenu<UserDirectory>( "userDirectoryDropdownMenu", new PropertyModel<>(this, "userDirectory"), userDirectories, "fa fa-users") { @Override protected String getDisplayValue(UserDirectory menuItem) { return menuItem.getName(); } @Override protected void onMenuItemSelected(AjaxRequestTarget target, UserDirectory menuItem) { dataProvider.setUserDirectoryId(userDirectory.getId()); if (target != null) { target.add(tableContainer); } } }; userDirectoryDropdownMenu.setVisible(userDirectories.size() > 1); tableContainer.add(userDirectoryDropdownMenu); // The group data view DataView<Group> dataView = new DataView<Group>("group", dataProvider) { private static final long serialVersionUID = 1000000; @Override protected void populateItem(Item<Group> item) { item.add(new Label("groupName", new PropertyModel<String>(item.getModel(), "groupName"))); item.add(new Label("description", new PropertyModel<String>(item.getModel(), "description"))); // The "updateLink" link Link<Void> updateLink = new Link<Void>("updateLink") { private static final long serialVersionUID = 1000000; @Override public void onClick() { UpdateGroupPage page = new UpdateGroupPage(getPageReference(), item.getModel()); setResponsePage(page); } }; item.add(updateLink); // The "removeLink" link AjaxLink<Void> removeLink = new AjaxLink<Void>("removeLink") { private static final long serialVersionUID = 1000000; @Override public void onClick(AjaxRequestTarget target) { Group group = item.getModelObject(); if (group != null) { removeDialog.show(target, group); } else { target.add(tableContainer); } } }; item.add(removeLink); } }; dataView.setItemsPerPage(10); dataView.setItemReuseStrategy(ReuseIfModelsEqualStrategy.getInstance()); tableContainer.add(dataView); tableContainer.add(new PagingNavigator("navigator", dataView)); } catch (Throwable e) { throw new WebApplicationException("Failed to initialise the GroupAdministrationPage", e); } } private List<UserDirectory> getUserDirectories() throws OrganisationNotFoundException, UserDirectoryNotFoundException, SecurityException { WebSession session = getWebApplicationSession(); List<UserDirectory> allUserDirectories = securityService .getUserDirectoriesForOrganisation(session.getOrganisation().getId()); List<UserDirectory> userDirectories = new ArrayList<>(); for (UserDirectory userDirectory : allUserDirectories) { if ((userDirectory.getId().equals(SecurityService.DEFAULT_USER_DIRECTORY_ID) && (!session.getUserDirectoryId().equals(SecurityService.DEFAULT_USER_DIRECTORY_ID)))) { // Do nothing } else if (securityService.supportsGroupAdministration(userDirectory.getId())) { userDirectories.add(userDirectory); } } return userDirectories; } /** * The <code>RemoveDialog</code> class implements a dialog that allows the removal * of a group to be confirmed. */ private class RemoveDialog extends Dialog { private static final long serialVersionUID = 1000000; private String groupName; private Label nameLabel; /** * Constructs a new <code>RemoveDialog</code>. * * @param tableContainer the table container, which allows the group table and its * associated navigator to be updated using AJAX */ RemoveDialog(WebMarkupContainer tableContainer) { super("removeDialog"); nameLabel = new Label("name", Model.of("")); nameLabel.setOutputMarkupId(true); add(nameLabel); // The "removeLink" link AjaxLink<Void> removeLink = new AjaxLink<Void>("removeLink") { private static final long serialVersionUID = 1000000; @Override public void onClick(AjaxRequestTarget target) { try { securityService.deleteGroup(userDirectory.getId(), groupName); target.add(tableContainer); GroupAdministrationPage.this.info( "Successfully removed the group " + nameLabel.getDefaultModelObjectAsString()); } catch (ExistingGroupMembersException e) { GroupAdministrationPage.this.error("Failed to remove the group " + nameLabel.getDefaultModelObjectAsString() + " " + "with existing users"); } catch (Throwable e) { logger.error( String.format("Failed to remove the group (%s): %s", groupName, e.getMessage()), e); GroupAdministrationPage.this .error("Failed to remove the group " + nameLabel.getDefaultModelObjectAsString()); } target.add(getAlerts()); hide(target); } }; add(removeLink); } /** * Show the dialog using Ajax. * * @param target the AJAX request target * @param group the group being removed */ public void show(AjaxRequestTarget target, Group group) { groupName = group.getGroupName(); nameLabel.setDefaultModelObject(group.getGroupName()); target.add(nameLabel); super.show(target); } } }