--- /dev/null
+package org.argeo.support.openlayers;
+
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+import javax.jcr.observation.Event;
+import javax.jcr.observation.EventIterator;
+import javax.jcr.observation.EventListener;
+import javax.jcr.query.Query;
+
+import org.argeo.api.NodeConstants;
+import org.argeo.cms.auth.CurrentUser;
+import org.argeo.cms.ui.CmsUiProvider;
+import org.argeo.cms.ui.CmsView;
+import org.argeo.cms.ui.util.CmsUiUtils;
+import org.argeo.entity.EntityType;
+import org.argeo.jcr.JcrException;
+import org.argeo.jcr.JcrUtils;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+/** Displays an overview map. */
+public class OverviewMap implements CmsUiProvider {
+
+ @Override
+ public Control createUi(Composite parent, Node context) throws RepositoryException {
+ parent.setLayout(new GridLayout());
+ refreshUi(parent, context);
+
+ try {
+ String[] nodeTypes = { EntityType.geopoint.get() };
+ context.getSession().getWorkspace().getObservationManager().addEventListener(new EventListener() {
+
+ @Override
+ public void onEvent(EventIterator events) {
+ if (!parent.isDisposed())
+ parent.getDisplay().asyncExec(() -> {
+ try {
+ refreshUi(parent, context);
+ } catch (RepositoryException e) {
+ throw new JcrException(e);
+ }
+ });
+ }
+ }, Event.PROPERTY_CHANGED | Event.NODE_ADDED | Event.NODE_REMOVED | Event.PROPERTY_ADDED,
+ "/", true, null, nodeTypes, false);
+ } catch (RepositoryException e) {
+ throw new IllegalStateException("Cannot add JCR observer", e);
+ }
+
+ return parent;
+ }
+
+ protected void refreshUi(Composite parent, Node context) throws RepositoryException {
+ CmsUiUtils.clear(parent);
+ boolean coworker = CmsView.getCmsView(parent).doAs(() -> CurrentUser.isInRole(NodeConstants.ROLE_USER_ADMIN));
+ Query query = context.getSession().getWorkspace().getQueryManager()
+ .createQuery("SELECT * FROM [" + EntityType.local.get() + "] WHERE [entity:type]='"
+ + EntityType.geopoint.get() + "'",
+ Query.JCR_SQL2);
+ List<Node> geoPoints = JcrUtils.nodeIteratorToList(query.execute().getNodes());
+ OpenLayersMap apafMap = new OpenLayersMap(parent, SWT.NONE, getClass().getResource("map-osm.html"));
+ apafMap.setLayoutData(CmsUiUtils.fillAll());
+
+ // apafMap.setZoom(7);
+ // apafMap.setCenter(-2.472, 8.010);
+ apafMap.addPoints(geoPoints);
+ }
+}