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.util.Collection; import java.util.Iterator; import net.ontopia.infoset.core.LocatorIF; import net.ontopia.topicmaps.core.OccurrenceIF; import net.ontopia.topicmaps.core.TopicIF; import net.ontopia.topicmaps.core.TopicMapBuilderIF; import net.ontopia.topicmaps.core.TopicMapIF; import ontopoly.components.FieldInstanceOccurrencePanel; import ontopoly.components.FieldInstancesPanel; import ontopoly.model.FieldAssignment; import ontopoly.model.FieldDefinition; import ontopoly.model.FieldInstance; import ontopoly.model.OccurrenceField; import ontopoly.model.OccurrenceType; import ontopoly.model.PSI; import ontopoly.model.Topic; import ontopoly.models.FieldInstanceModel; import ontopoly.models.TopicModel; import org.apache.wicket.Component; import org.apache.wicket.MarkupContainer; import org.apache.wicket.RequestCycle; import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior; import org.apache.wicket.ajax.AjaxRequestTarget; 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.list.ListItem; import org.apache.wicket.markup.html.list.ListView; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.model.Model; public class ModalGeoPickerPage extends Panel { ModalWindow dialog; TopicModel<Topic> thetopic; AbstractDefaultAjaxBehavior behave; Label ajaxurllabel; Model<String> ajaxurlmodel; FieldInstanceOccurrencePanel latpan; FieldInstanceOccurrencePanel lngpan; public ModalGeoPickerPage(ModalWindow dialog, Topic thetopic) { super(dialog.getContentId()); this.dialog = dialog; this.thetopic = new TopicModel<Topic>(thetopic); //setInitialHeight(700); final WebMarkupContainer popupContent = new WebMarkupContainer("popupContent"); popupContent.setOutputMarkupId(true); add(popupContent); popupContent.add(new Label("title", new Model<String>("Pick location for '" + thetopic.getName() + "'"))); behave = new ReceiveRequest(this); this.add(behave); // using a label to provide the callback URI to the JavaScript code // in the page. unfortunately, we don't know the URI here, so we set // things up, then insert it later. ajaxurlmodel = new Model<String>("// and the url is ..."); ajaxurllabel = new Label("ajaxurl", ajaxurlmodel); ajaxurllabel.setEscapeModelStrings(false); popupContent.add(ajaxurllabel); } protected void onBeforeRender() { super.onBeforeRender(); String lat = get(thetopic.getTopic().getTopicIF(), PSI.ON_LATITUDE); if (lat == null) lat = "59.92"; String lng = get(thetopic.getTopic().getTopicIF(), PSI.ON_LONGITUDE); if (lng == null) lng = "10.74"; // we can't call getCallbackUrl() in the constructor, but here it's // possible, so we insert the URI into the label we created above, // and everything is hunky dory. String js = "var ajaxurl = '" + behave.getCallbackUrl() + "';\n"; js += "var latitude = " + lat + ";\n"; js += "var longitude = " + lng + ";\n"; ajaxurllabel.modelChanging(); ajaxurlmodel.setObject(js); ajaxurllabel.modelChanged(); } protected void onSetPosition(AjaxRequestTarget target) { String lat = RequestCycle.get().getRequest().getParameter("lat"); String lng = RequestCycle.get().getRequest().getParameter("long"); findFields(); set(thetopic.getTopic().getTopicIF(), lat, PSI.ON_LATITUDE); set(thetopic.getTopic().getTopicIF(), lng, PSI.ON_LONGITUDE); latpan.getFieldValuesModel().setShowExtraField(false, false); latpan.onUpdate(target); lngpan.getFieldValuesModel().setShowExtraField(false, false); lngpan.onUpdate(target); onCloseOk(target); } protected void onCloseCancel(AjaxRequestTarget target) { dialog.close(target); } protected void onCloseOk(AjaxRequestTarget target) { dialog.close(target); } private void findFields() { MarkupContainer container = this; while (!(container instanceof FieldInstancesPanel)) container = container.getParent(); FieldInstancesPanel parent = (FieldInstancesPanel) container; ListView<FieldInstanceModel> listView = parent.getFieldList(); Iterator<? extends ListItem<FieldInstanceModel>> itfim = listView.iterator(); while (itfim.hasNext()) { ListItem<FieldInstanceModel> li = itfim.next(); FieldInstance fi = li.getModelObject().getFieldInstance(); FieldAssignment fa = fi.getFieldAssignment(); FieldDefinition fd = fa.getFieldDefinition(); if (fd.getFieldType() != FieldDefinition.FIELD_TYPE_OCCURRENCE) continue; OccurrenceField of = (OccurrenceField) fd; OccurrenceType ot = of.getOccurrenceType(); if (ot == null) continue; Collection<LocatorIF> psis = ot.getTopicIF().getSubjectIdentifiers(); if (psis.contains(PSI.ON_LATITUDE) || psis.contains(PSI.ON_LONGITUDE)) { Iterator<? extends Component> it = li.iterator(); while (it.hasNext()) { Object component = it.next(); if (component instanceof FieldInstanceOccurrencePanel) { FieldInstanceOccurrencePanel fiop = (FieldInstanceOccurrencePanel) component; if (psis.contains(PSI.ON_LONGITUDE)) lngpan = fiop; else latpan = fiop; } } } } } private void set(TopicIF topic, String value, LocatorIF psi) { for (OccurrenceIF occ : topic.getOccurrences()) { TopicIF type = occ.getType(); if (type.getSubjectIdentifiers().contains(psi)) { occ.setValue(value); return; } } TopicMapIF tm = topic.getTopicMap(); TopicMapBuilderIF builder = tm.getBuilder(); TopicIF type = tm.getTopicBySubjectIdentifier(psi); builder.makeOccurrence(topic, type, value); } private String get(TopicIF topic, LocatorIF psi) { for (OccurrenceIF occ : topic.getOccurrences()) { TopicIF type = occ.getType(); if (type.getSubjectIdentifiers().contains(psi)) return occ.getValue(); } return null; } // --- Ajax request receipt public class ReceiveRequest extends AbstractDefaultAjaxBehavior { private ModalGeoPickerPage parent; public ReceiveRequest(ModalGeoPickerPage parent) { this.parent = parent; } protected void respond(final AjaxRequestTarget target) { parent.onSetPosition(target); } } }