Java tutorial
/* * #! * Ontopoly Editor * #- * Copyright (C) 2001 - 2013 The Ontopia Project * #- * 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 ontopoly.components; import java.util.Collection; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import ontopoly.model.EditMode; import ontopoly.model.FieldInstance; import ontopoly.model.InterfaceControl; import ontopoly.model.RoleField; import ontopoly.model.Topic; import ontopoly.model.TopicMap; import ontopoly.model.TopicType; import ontopoly.models.FieldInstanceModel; import ontopoly.models.FieldValueModel; import ontopoly.models.FieldsViewModel; import ontopoly.models.PossiblePlayersModel; import ontopoly.models.RoleFieldModel; import ontopoly.models.TopicModel; import ontopoly.pages.AbstractOntopolyPage; import ontopoly.pages.ModalFindPage; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.markup.repeater.RepeatingView; import org.apache.wicket.model.Model; import org.apache.wicket.model.ResourceModel; public class FieldInstanceAssociationNaryField extends Panel { protected int arity; protected final FieldValueModel fieldValueModel; protected final Map<RoleFieldModel, TopicModel<Topic>> selectedPlayers = new HashMap<RoleFieldModel, TopicModel<Topic>>(); protected final FieldInstanceAssociationNaryPanel parentPanel; protected boolean needsUpdate; protected final RoleFieldModel currentFieldModel; protected final TopicModel<Topic> currentTopicModel; public FieldInstanceAssociationNaryField(String id, FieldInstanceAssociationNaryPanel _parentPanel, RoleFieldModel roleFieldModel, List<RoleFieldModel> otherRoleFieldModels, FieldValueModel _fieldValueModel, FieldsViewModel fieldsViewModel, final boolean readonly, boolean traversable, final int arity) { super(id); this.fieldValueModel = _fieldValueModel; this.parentPanel = _parentPanel; this.arity = arity; FieldInstanceModel fieldInstanceModel = fieldValueModel.getFieldInstanceModel(); // register current player this.currentFieldModel = roleFieldModel; this.currentTopicModel = new TopicModel<Topic>(fieldInstanceModel.getFieldInstance().getInstance()); selectedPlayers.put(roleFieldModel, currentTopicModel); RoleField.ValueIF fieldValue = (RoleField.ValueIF) fieldValueModel.getFieldValue(); RepeatingView rv = new RepeatingView("roles"); rv.setVisible(!readonly || fieldValueModel.isExistingValue()); add(rv); Iterator<RoleFieldModel> oiter = otherRoleFieldModels.iterator(); while (oiter.hasNext()) { final RoleFieldModel ofieldModel = oiter.next(); RoleField ofield = ofieldModel.getRoleField(); final WebMarkupContainer parent = new WebMarkupContainer(rv.newChildId()) { @Override public boolean isVisible() { // hide if read-only and not complete if (readonly && selectedPlayers.size() != arity) return false; else return true; } }; parent.setOutputMarkupId(true); rv.add(parent); parent.add(new Label("label", new Model<String>(ofield.getRoleType().getName()))); //! parent.add(new Label("label", new Model(ofield.getFieldName()))); // register other player Topic topic = (fieldValue == null ? null : fieldValue.getPlayer(ofield, fieldInstanceModel.getFieldInstance().getInstance())); final TopicModel<Topic> topicModel = new TopicModel<Topic>(topic); // NOTE: should not use same model as selected model as the model would then be updated immediately selectedPlayers.put(ofieldModel, new TopicModel<Topic>(topic)); TopicLink<Topic> playerLink = new TopicLink<Topic>("player", topicModel); playerLink.setEnabled(traversable); playerLink.setVisible(topic != null); parent.add(playerLink); EditMode editMode = ofield.getEditMode(); final boolean allowAdd = !editMode.isNewValuesOnly(); final boolean allowCreate = !editMode.isExistingValuesOnly(); if (readonly || fieldValueModel.isExistingValue() || !allowAdd) { // unused components parent.add(new Label("select").setVisible(false)); parent.add(new Label("find").setVisible(false)); parent.add(new Label("findModal").setVisible(false)); } else { InterfaceControl interfaceControl = ofield.getInterfaceControl(); if (interfaceControl.isAutoComplete()) { final AssociationFieldAutoCompleteTextField autoCompleteField = new AssociationFieldAutoCompleteTextField( "select", new TopicModel<Topic>(null), ofieldModel) { @Override protected void filterPlayers(List<Topic> players) { AbstractOntopolyPage page = (AbstractOntopolyPage) getPage(); page.filterTopics(players); } @Override protected void onTopicSelected(Topic topic) { topicModel.setObject(topic); boolean changesMade = onNewSelection(ofieldModel, topic); // replace ourselves with a topic link if (changesMade) parent.replace(new TopicLink<Topic>("select", new TopicModel<Topic>(topic))); } }; autoCompleteField.getTextField().add(new AjaxFormComponentUpdatingBehavior("onchange") { @Override protected void onUpdate(AjaxRequestTarget target) { if (needsUpdate) FieldInstanceAssociationNaryField.this.onUpdate(target); else target.addComponent(parent); } }); autoCompleteField.setOutputMarkupId(true); parent.add(autoCompleteField); // unused components parent.add(new Label("find").setVisible(false)); parent.add(new Label("findModal").setVisible(false)); } else if (interfaceControl.isDropDownList()) { PossiblePlayersModel choicesModel = new PossiblePlayersModel(fieldInstanceModel, ofieldModel) { @Override protected void filterPlayers(Collection<Topic> players) { AbstractOntopolyPage page = (AbstractOntopolyPage) getPage(); page.filterTopics(players); } }; TopicDropDownChoice<Topic> choice = new TopicDropDownChoice<Topic>("select", topicModel, choicesModel) { @Override protected void onModelChanged() { super.onModelChanged(); onNewSelection(ofieldModel, getModel().getObject()); } }; choice.setOutputMarkupId(true); choice.add(new AjaxFormComponentUpdatingBehavior("onchange") { @Override protected void onUpdate(AjaxRequestTarget target) { FieldInstanceAssociationNaryField.this.onUpdate(target); } @Override protected void onError(AjaxRequestTarget target, RuntimeException e) { FieldInstanceAssociationNaryField.this.onError(target, e); } }); parent.add(choice); // unused components parent.add(new Label("find").setVisible(false)); parent.add(new Label("findModal").setVisible(false)); } else if (interfaceControl.isSearchDialog() || interfaceControl.isBrowseDialog()) { // unused components parent.add(new TopicLink<Topic>("select", topicModel)); // "search"/"browse" button final ModalWindow findModal = new ModalWindow("findModal"); parent.add(findModal); int activeTab = (interfaceControl.isSearchDialog() ? ModalFindPage.ACTIVE_TAB_SEARCH : ModalFindPage.ACTIVE_TAB_BROWSE); findModal.setContent( new ModalFindPage<String>(findModal.getContentId(), fieldInstanceModel, activeTab) { @Override protected boolean isMaxOneCardinality() { return true; } @Override protected void onSelectionConfirmed(AjaxRequestTarget target, Collection<String> selected) { if (!selected.isEmpty()) { String topicId = selected.iterator().next(); TopicMap topicMap = fieldValueModel.getFieldInstanceModel() .getFieldInstance().getInstance().getTopicMap(); Topic topic = topicMap.getTopicById(topicId); topicModel.setObject(topic); onNewSelection(ofieldModel, topic); if (needsUpdate) FieldInstanceAssociationNaryField.this.onUpdate(target); else target.addComponent(parent); } } @Override protected void onCloseCancel(AjaxRequestTarget target) { findModal.close(target); } @Override protected void onCloseOk(AjaxRequestTarget target) { findModal.close(target); } }); findModal.setTitle(new ResourceModel("ModalWindow.title.find.topic").getObject().toString()); findModal.setCookieName("findModal"); OntopolyImageLink findButton = new OntopolyImageLink("find", "search.gif", new ResourceModel("icon.search.find-topic")) { @Override public boolean isVisible() { return !readonly; } @Override public void onClick(AjaxRequestTarget target) { findModal.show(target); } }; parent.add(findButton); } else { throw new RuntimeException("Unsupported interface control: " + interfaceControl); } } // create button if (readonly || fieldValueModel.isExistingValue() || !allowCreate) { parent.add(new Label("create").setVisible(false)); } else { // always use popup window int createAction = FieldInstanceCreatePlayerPanel.CREATE_ACTION_POPUP; FieldInstanceCreatePlayerPanel createPanel = new FieldInstanceCreatePlayerPanel("create", fieldInstanceModel, fieldsViewModel, ofieldModel, parentPanel, createAction) { @Override protected Topic createInstance(TopicType topicType) { Topic currentTopic = currentTopicModel.getTopic(); RoleField currentField = currentFieldModel.getRoleField(); RoleField createField = ofieldModel.getRoleField(); Topic createdTopic = null; // check with page to see if add is allowed AbstractOntopolyPage page = (AbstractOntopolyPage) getPage(); if (page.isCreateAllowed(currentTopic, currentField, topicType, createField)) { // create a new topic instance createdTopic = topicType.createInstance(null); topicModel.setObject(createdTopic); performNewSelection(ofieldModel, createdTopic); } return createdTopic; } @Override protected void performNewSelection(RoleFieldModel ofieldModel, Topic selectedTopic) { FieldInstanceAssociationNaryField.this.performNewSelection(ofieldModel, selectedTopic); } @Override protected void hideInstancePage(AjaxRequestTarget target) { if (needsUpdate) FieldInstanceAssociationNaryField.this.onUpdate(target); else target.addComponent(parent); } }; createPanel.setOutputMarkupId(true); parent.add(createPanel); } } } protected boolean onNewSelection(RoleFieldModel ofieldModel, Topic selectedTopic) { Topic currentTopic = currentTopicModel.getTopic(); RoleField currentField = currentFieldModel.getRoleField(); RoleField selectedField = ofieldModel.getRoleField(); // check with page to see if add is allowed AbstractOntopolyPage page = (AbstractOntopolyPage) getPage(); if (page.isAddAllowed(currentTopic, currentField, selectedTopic, selectedField)) { performNewSelection(ofieldModel, selectedTopic); return true; } else { return false; } } protected void performNewSelection(RoleFieldModel ofieldModel, Topic selectedTopic) { try { AbstractOntopolyPage page = (AbstractOntopolyPage) getPage(); // check to see if old state was complete if (selectedPlayers.size() == arity) { // remove existing association if old state was complete RoleField.ValueIF oldValue = createValue(); if (oldValue != null) { FieldInstance fieldInstance = fieldValueModel.getFieldInstanceModel().getFieldInstance(); fieldInstance.removeValue(oldValue, page.getListener()); } } // add new selection selectedPlayers.put(ofieldModel, new TopicModel<Topic>(selectedTopic)); // check to see if new state was complete if (selectedPlayers.size() == arity) { // add new association as state is now complete RoleField.ValueIF newValue = createValue(); if (newValue != null) { FieldInstance fieldInstance = fieldValueModel.getFieldInstanceModel().getFieldInstance(); fieldInstance.addValue(newValue, page.getListener()); fieldValueModel.setExistingValue(newValue); this.needsUpdate = true; } } } catch (Exception e) { throw new RuntimeException(e); } } protected void onUpdate(AjaxRequestTarget target) { if (needsUpdate) { parentPanel.fieldValuesModel.setShowExtraField(false, false); parentPanel.onUpdate(target); } needsUpdate = false; } protected void onError(AjaxRequestTarget target, RuntimeException e) { if (needsUpdate) parentPanel.onError(target, e); needsUpdate = false; } protected RoleField.ValueIF createValue() { RoleField.ValueIF value = RoleField.createValue(arity); Iterator<RoleFieldModel> iter = selectedPlayers.keySet().iterator(); while (iter.hasNext()) { RoleFieldModel roleFieldModel = iter.next(); TopicModel<Topic> topicModel = selectedPlayers.get(roleFieldModel); RoleField roleField = roleFieldModel.getRoleField(); Topic topic = topicModel.getTopic(); // if topic is null then the value is not complete, so we return null if (topic == null) return null; value.addPlayer(roleField, topic); } return value; } @Override public void onDetach() { fieldValueModel.detach(); currentFieldModel.detach(); currentTopicModel.detach(); for (Map.Entry<RoleFieldModel, TopicModel<Topic>> selectedPlayer : selectedPlayers.entrySet()) { selectedPlayer.getKey().detach(); selectedPlayer.getValue().detach(); } super.onDetach(); } }