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.pages; import java.io.Serializable; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.HashSet; import java.util.Iterator; import java.util.List; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.TreeModel; import javax.swing.tree.TreeNode; import ontopoly.components.AjaxParentCheckChild; import ontopoly.components.AjaxParentFormChoiceComponentUpdatingBehavior; import ontopoly.components.AjaxParentRadioChild; import ontopoly.components.CheckLabelPanel; import ontopoly.components.TopicDropDownChoice; import ontopoly.components.TreePanel; import ontopoly.model.FieldAssignment; import ontopoly.model.FieldInstance; import ontopoly.model.RoleField; import ontopoly.model.Topic; import ontopoly.model.TopicMap; import ontopoly.model.TopicType; import ontopoly.models.FieldInstanceModel; import ontopoly.models.TopicModel; import ontopoly.models.TopicTypeModel; import ontopoly.pojos.TopicNode; import ontopoly.utils.TreeModels; import org.apache.wicket.Component; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.markup.ComponentTag; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Button; import org.apache.wicket.markup.html.form.Check; import org.apache.wicket.markup.html.form.CheckGroup; import org.apache.wicket.markup.html.form.FormComponent; import org.apache.wicket.markup.html.form.Radio; import org.apache.wicket.markup.html.form.RadioGroup; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.list.ListItem; import org.apache.wicket.markup.html.list.ListView; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.LoadableDetachableModel; import org.apache.wicket.model.Model; import org.apache.wicket.model.ResourceModel; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public abstract class ModalFindPage<T> extends Panel { public static final int ACTIVE_TAB_SEARCH = 1; public static final int ACTIVE_TAB_BROWSE = 2; protected static Logger log = LoggerFactory.getLogger(ModalFindPage.class); protected FieldInstanceModel fieldInstanceModel; AjaxLink<Object> searchTabLink; AjaxLink<Object> browseTabLink; private boolean errorInSearch = false; protected TreeModel emptyTreeModel = TreeModels.createEmptyTreeModel(); private IModel<List<TopicType>> playerTypesChoicesModel; private TopicModel<TopicType> selectedTypeModel; private IModel<List<Topic>> results; public ModalFindPage(String id, FieldInstanceModel fieldInstanceModel, int activeTab) { super(id); this.fieldInstanceModel = fieldInstanceModel; final WebMarkupContainer popupContent = new WebMarkupContainer("popupContent"); popupContent.setOutputMarkupId(true); add(popupContent); FieldInstance fieldInstance = fieldInstanceModel.getFieldInstance(); FieldAssignment fieldAssignment = fieldInstance.getFieldAssignment(); RoleField roleField = (RoleField) fieldAssignment.getFieldDefinition(); popupContent.add(new Label("title", new Model<String>(roleField.getFieldName()))); final WebMarkupContainer searchTab = createSearchTab(); popupContent.add(searchTab); final WebMarkupContainer browseTab = createBrowseTab(); popupContent.add(browseTab); this.searchTabLink = new AjaxLink<Object>("searchTabLink") { @Override public void onClick(AjaxRequestTarget target) { searchTab.setVisible(true); browseTab.setVisible(false); searchTabLink.setEnabled(false); browseTabLink.setEnabled(true); target.addComponent(popupContent); } }; popupContent.add(searchTabLink); this.browseTabLink = new AjaxLink<Object>("browseTabLink") { @Override public void onClick(AjaxRequestTarget target) { searchTab.setVisible(false); browseTab.setVisible(true); searchTabLink.setEnabled(true); browseTabLink.setEnabled(false); target.addComponent(popupContent); } }; popupContent.add(browseTabLink); if (activeTab == ACTIVE_TAB_BROWSE) { searchTab.setVisible(false); browseTab.setVisible(true); searchTabLink.setEnabled(true); browseTabLink.setEnabled(false); } else { searchTab.setVisible(true); browseTab.setVisible(false); searchTabLink.setEnabled(false); browseTabLink.setEnabled(true); } } protected boolean isMaxOneCardinality() { FieldInstance fieldInstance = fieldInstanceModel.getFieldInstance(); return fieldInstance.getFieldAssignment().getFieldDefinition().getCardinality().isMaxOne(); } private WebMarkupContainer createSearchTab() { WebMarkupContainer searchTab = new WebMarkupContainer("searchTab"); searchTab.setOutputMarkupId(true); final TextField<String> searchTermField = new TextField<String>("searchTerm", new Model<String>(null)); searchTermField.add(new AjaxFormComponentUpdatingBehavior("onchange") { @Override protected void onUpdate(AjaxRequestTarget target) { // do nothing here as we only want the server to be notified } }); searchTab.add(searchTermField); final WebMarkupContainer resultsContainer = new WebMarkupContainer("resultsContainer"); resultsContainer.setOutputMarkupId(true); searchTab.add(resultsContainer); this.results = new LoadableDetachableModel<List<Topic>>() { @Override protected List<Topic> load() { String searchTerm = (String) searchTermField.getModelObject(); if (searchTerm == null) { return Collections.emptyList(); } else { try { FieldInstance fieldInstance = fieldInstanceModel.getFieldInstance(); RoleField associationField = (RoleField) fieldInstance.getFieldAssignment() .getFieldDefinition(); RoleField otherField = (RoleField) associationField.getFieldsForOtherRoles().iterator() .next(); return otherField.searchAllowedPlayers(searchTerm); } catch (Exception e) { errorInSearch = true; return Collections.emptyList(); } } } }; Button searchButton = new Button("search"); searchButton.add(new AjaxFormComponentUpdatingBehavior("onclick") { @Override protected void onUpdate(AjaxRequestTarget target) { results.detach(); target.addComponent(resultsContainer); } }); searchTab.add(searchButton); final FormComponent<? extends Object> checkGroup; final boolean maxOneCardinality = isMaxOneCardinality(); if (maxOneCardinality) { checkGroup = new RadioGroup<String>("checkGroup", new Model<String>()); } else { checkGroup = new CheckGroup<String>("checkGroup", new HashSet<String>()); } checkGroup.add(new AjaxFormChoiceComponentUpdatingBehavior() { @Override protected void onUpdate(AjaxRequestTarget target) { // notify server when selection is made } }); resultsContainer.add(checkGroup); final WebMarkupContainer unsuccessfulSearchContainer = new WebMarkupContainer( "unsuccessfulSearchContainer") { public boolean isVisible() { IModel<String> model = searchTermField.getModel(); if (model == null) return false; return !(model.getObject() == null || model.getObject().equals("")) && ((List<Topic>) results.getObject()).isEmpty(); } }; unsuccessfulSearchContainer.setOutputMarkupPlaceholderTag(true); checkGroup.add(unsuccessfulSearchContainer); Label message = new Label("message", new ResourceModel(errorInSearch ? "search.error" : "search.empty")); unsuccessfulSearchContainer.add(message); ListView<Topic> listView = new ListView<Topic>("results", results) { public void populateItem(ListItem<Topic> item) { Topic hit = item.getModelObject(); if (maxOneCardinality) { Radio<String> check = new Radio<String>("check", new Model<String>(hit.getId())) { @Override protected void onComponentTag(final ComponentTag tag) { tag.put("type", "radio"); super.onComponentTag(tag); } }; item.add(check); } else { Check<String> check = new Check<String>("check", new Model<String>(hit.getId())) { @Override protected void onComponentTag(final ComponentTag tag) { tag.put("type", "checkbox"); super.onComponentTag(tag); } }; item.add(check); } item.add(new Label("topic", new Model<String>(hit.getName()))); item.add(new Label("type", new Model<String>(((TopicType) hit.getTopicTypes().iterator().next()).getName()))); } }; checkGroup.add(listView); Button closeOkButton = new Button("closeOK"); closeOkButton.add(new AjaxFormComponentUpdatingBehavior("onclick") { @Override protected void onUpdate(AjaxRequestTarget target) { Object modelObject = checkGroup.getModelObject(); Collection selected; if (modelObject instanceof String) selected = Collections.singleton(modelObject); else selected = (Collection) modelObject; if (selected == null) selected = Collections.emptyList(); // add associations for selected topics onSelectionConfirmed(target, selected); onCloseOk(target); // reset search term field searchTermField.getDefaultModel().setObject(null); } }); searchTab.add(closeOkButton); Button closeCancelButton = new Button("closeCancel"); closeCancelButton.add(new AjaxFormComponentUpdatingBehavior("onclick") { @Override protected void onUpdate(AjaxRequestTarget target) { onCloseCancel(target); // reset search term field searchTermField.getDefaultModel().setObject(null); } }); searchTab.add(closeCancelButton); return searchTab; } private WebMarkupContainer createBrowseTab() { final WebMarkupContainer browseTab = new WebMarkupContainer("browseTab"); browseTab.setOutputMarkupId(true); this.playerTypesChoicesModel = new LoadableDetachableModel<List<TopicType>>() { @Override protected List<TopicType> load() { // TODO: should merge with PlayerTypesModel.java (extend to filter my large instance types) FieldInstance fieldInstance = fieldInstanceModel.getFieldInstance(); RoleField associationField = (RoleField) fieldInstance.getFieldAssignment().getFieldDefinition(); // FIXME: this doesn't work for n+ary fields RoleField otherField = (RoleField) associationField.getFieldsForOtherRoles().iterator().next(); TopicMap tm = associationField.getTopicMap(); // include all topic types except those with large instance sets Collection<TopicType> allowedValueTypes = otherField.getDeclaredPlayerTypes(); Collection<TopicType> largeInstanceSets = tm.getTopicTypesWithLargeInstanceSets(); List<TopicType> topicTypes = new ArrayList<TopicType>(allowedValueTypes.size()); Iterator<TopicType> iter = allowedValueTypes.iterator(); while (iter.hasNext()) { TopicType topicType = iter.next(); if (!largeInstanceSets.contains(topicType)) topicTypes.add(topicType); } return topicTypes; } }; List<TopicType> playerTypes = playerTypesChoicesModel.getObject(); TopicType selectedType = playerTypes.size() == 1 ? playerTypes.get(0) : null; this.selectedTypeModel = new TopicModel<TopicType>(selectedType, TopicModel.TYPE_TOPIC_TYPE); final WebMarkupContainer resultsContainer = new WebMarkupContainer("resultsContainer"); resultsContainer.setOutputMarkupId(true); browseTab.add(resultsContainer); final FormComponent checkGroup; final Model<String> radioGroupModel = new Model<String>(); final Collection<String> checkGroupModel = new HashSet<String>(); final boolean maxOneCardinality = isMaxOneCardinality(); if (maxOneCardinality) { checkGroup = new RadioGroup<String>("checkGroup", radioGroupModel); } else { checkGroup = new CheckGroup<String>("checkGroup", checkGroupModel); } final AjaxParentFormChoiceComponentUpdatingBehavior apfc = new AjaxParentFormChoiceComponentUpdatingBehavior() { @Override protected void onUpdate(AjaxRequestTarget target) { // notify server when selection is made } }; checkGroup.add(apfc); resultsContainer.add(checkGroup); // create a tree final TreePanel treePanel = new TreePanel("results", getTreeModel(null)) { @Override protected Component populateNode(String id, TreeNode treeNode) { DefaultMutableTreeNode mTreeNode = (DefaultMutableTreeNode) treeNode; final TopicNode node = (TopicNode) mTreeNode.getUserObject(); Topic selectedType = selectedTypeModel.getTopic(); final boolean selectable = node.getTopic().isInstanceOf(selectedType); // create link with label return new CheckLabelPanel(id) { @Override protected Component newCheck(String id) { if (maxOneCardinality) { return new AjaxParentRadioChild<String>(id, new Model<String>(node.getTopicId()), apfc) { @Override public boolean isVisible() { return selectable; } @Override protected void onComponentTag(final ComponentTag tag) { tag.put("type", "radio"); super.onComponentTag(tag); } }; } else { return new AjaxParentCheckChild(id, new Model<String>(node.getTopicId()), apfc) { @Override public boolean isVisible() { return selectable; } @Override protected void onComponentTag(final ComponentTag tag) { tag.put("type", "checkbox"); super.onComponentTag(tag); } }; } } @Override protected Label newLabel(String id) { Label label = new Label(id, new Model<String>(node.getName())); label.setRenderBodyOnly(false); return label; } }; } }; treePanel.setOutputMarkupId(true); checkGroup.add(treePanel); // NOTE: need to readd model here because page, which we depend on // in the construction of the tree model, is not available in // TreePanel constructor if (this.selectedTypeModel != null) treePanel.setDefaultModel(getTreeModel(selectedType)); final TopicDropDownChoice<TopicType> playerTypesDropDown = new TopicDropDownChoice<TopicType>("playerTypes", this.selectedTypeModel, playerTypesChoicesModel); playerTypesDropDown.add(new AjaxFormComponentUpdatingBehavior("onchange") { protected void onUpdate(AjaxRequestTarget target) { // replace tree model TopicType topicType = (TopicType) playerTypesDropDown.getDefaultModelObject(); treePanel.setDefaultModel(getTreeModel(topicType)); target.addComponent(resultsContainer); } }); browseTab.add(playerTypesDropDown); Button closeOkButton = new Button("closeOK"); closeOkButton.add(new AjaxFormComponentUpdatingBehavior("onclick") { @Override protected void onUpdate(AjaxRequestTarget target) { Object modelObject = checkGroup.getModelObject(); Collection selected; if (modelObject instanceof String) selected = Collections.singleton(modelObject); else selected = (Collection) modelObject; if (selected == null) selected = Collections.EMPTY_LIST; // add associations for selected topics onSelectionConfirmed(target, selected); onCloseOk(target); // reset selected topic type, choice group and tree model selectedTypeModel.setObject(null); treePanel.setDefaultModel(getTreeModel(null)); radioGroupModel.setObject(null); checkGroupModel.clear(); } }); browseTab.add(closeOkButton); Button closeCancelButton = new Button("closeCancel"); closeCancelButton.add(new AjaxFormComponentUpdatingBehavior("onclick") { @Override protected void onUpdate(AjaxRequestTarget target) { onCloseCancel(target); // reset selected topic type, choice group and tree model selectedTypeModel.setObject(null); treePanel.setDefaultModel(getTreeModel(null)); radioGroupModel.setObject(null); checkGroupModel.clear(); } }); browseTab.add(closeCancelButton); return browseTab; } protected IModel<TreeModel> getTreeModel(TopicType _topicType) { TopicTypeModel topicTypeModel = new TopicTypeModel(_topicType); TopicType topicType = topicTypeModel.getTopicType(); if (topicType == null) { return new Model((Serializable) emptyTreeModel); } else { // AbstractOntopolyPage page = (AbstractOntopolyPage)getPage(); boolean adminEnabled = false; // page.isAdministrationEnabled(); return new Model((Serializable) TreeModels.createInstancesTreeModel(topicType, adminEnabled)); } } protected abstract void onSelectionConfirmed(AjaxRequestTarget target, Collection<T> selected); protected abstract void onCloseOk(AjaxRequestTarget target); protected abstract void onCloseCancel(AjaxRequestTarget target); @Override public void onDetach() { playerTypesChoicesModel.detach(); selectedTypeModel.detach(); results.detach(); super.onDetach(); } }