Java tutorial
/******************************************************************************* * Copyright (c) 2014 MEDEVIT <office@medevit.at>. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * MEDEVIT <office@medevit.at> - initial API and implementation ******************************************************************************/ package ch.elexis.core.ui.contacts.views; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.commons.jexl2.Expression; import org.apache.commons.jexl2.JexlEngine; import org.apache.commons.jexl2.JexlException; import org.apache.commons.jexl2.MapContext; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.core.databinding.observable.list.WritableList; import org.eclipse.core.databinding.observable.map.IObservableMap; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.databinding.viewers.ObservableListContentProvider; import org.eclipse.jface.viewers.ILabelDecorator; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.StructuredViewer; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.DND; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.part.ViewPart; import org.eclipse.ui.views.properties.IPropertySheetPage; import org.eclipse.ui.views.properties.tabbed.ITabbedPropertySheetPageContributor; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage; import ch.elexis.core.data.beans.ContactBeanFactory; import ch.elexis.core.data.events.ElexisEventDispatcher; import ch.elexis.core.model.IContact; import ch.elexis.core.ui.contacts.views.comparator.ContactSelectorViewerComparator; import ch.elexis.core.ui.contacts.views.dnd.ContactSelectorDragListener; import ch.elexis.core.ui.contacts.views.dnd.ContactSelectorDropListener; import ch.elexis.core.ui.contacts.views.filter.KontaktAnzeigeTextFieldViewerFilter; import ch.elexis.core.ui.contacts.views.filter.KontaktAnzeigeTypViewerFilter; import ch.elexis.core.ui.contacts.views.provider.ContactSelectorObservableMapLabelProvider; import ch.elexis.core.ui.contacts.views.provider.TableDecoratingLabelProvider; import ch.elexis.data.Kontakt; import ch.elexis.data.Patient; import ch.elexis.data.Person; import ch.elexis.data.Query; /** * @since 3.0.0 */ public class ContactSelectorView extends ViewPart implements ITabbedPropertySheetPageContributor { public static final String ID = "ch.elexis.core.ui.contacts.views.ContactSelectorView"; private ObservableListContentProvider contentProvider = null; private TableViewer tableViewerContacts; private WritableList contactList; private Text txtFilter; private KontaktAnzeigeTypViewerFilter filterAnzeigeTyp; private KontaktAnzeigeTextFieldViewerFilter filterPositionTitle; private LoadContactsRunnable loadContactsRunnable; private Label lblStatus; public ContactSelectorView() { contactList = new WritableList(); contentProvider = new ObservableListContentProvider(); filterPositionTitle = new KontaktAnzeigeTextFieldViewerFilter(); loadContactsRunnable = new LoadContactsRunnable(); } @Override public void createPartControl(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(new GridLayout(1, false)); Composite compositeSearch = new Composite(composite, SWT.NONE); compositeSearch.setLayout(new GridLayout(1, false)); compositeSearch.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); txtFilter = new Text(compositeSearch, SWT.BORDER | SWT.SEARCH | SWT.CANCEL); txtFilter.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); tableViewerContacts = new TableViewer(composite, SWT.BORDER | SWT.FULL_SELECTION); Table table = tableViewerContacts.getTable(); table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1)); Composite compositeStatus = new Composite(composite, SWT.NONE); compositeStatus.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); compositeStatus.setLayout(new GridLayout(1, false)); lblStatus = new Label(compositeStatus, SWT.NONE); lblStatus.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); tableViewerContacts.setComparator(new ContactSelectorViewerComparator(tableViewerContacts)); filterAnzeigeTyp = new KontaktAnzeigeTypViewerFilter(tableViewerContacts); ViewerFilter[] filters = new ViewerFilter[] { filterAnzeigeTyp, filterPositionTitle }; tableViewerContacts.setFilters(filters); int operations = DND.DROP_COPY | DND.DROP_MOVE; Transfer[] transferTypes = new Transfer[] { TextTransfer.getInstance() }; tableViewerContacts.addDragSupport(operations, transferTypes, new ContactSelectorDragListener(tableViewerContacts)); tableViewerContacts.addDropSupport(operations, transferTypes, new ContactSelectorDropListener(tableViewerContacts)); txtFilter.addKeyListener(new FilterKeyListener(txtFilter, tableViewerContacts)); txtFilter.addSelectionListener(new SelectionAdapter() { public void widgetDefaultSelected(SelectionEvent e) { if (e.detail == SWT.CANCEL) { filterPositionTitle.setSearchText(null); tableViewerContacts.getControl().setRedraw(false); tableViewerContacts.refresh(); tableViewerContacts.getControl().setRedraw(true); } } }); initDataBindings(); MenuManager menuManager = new MenuManager(); menuManager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS)); tableViewerContacts.getTable().setMenu(menuManager.createContextMenu(tableViewerContacts.getTable())); getSite().registerContextMenu(menuManager, tableViewerContacts); getSite().setSelectionProvider(tableViewerContacts); contactList.getRealm().asyncExec(loadContactsRunnable); tableViewerContacts.addSelectionChangedListener(new ContactSelectionChangedToEventDispatcher()); tableViewerContacts.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { StructuredSelection ss = (StructuredSelection) event.getSelection(); tableViewerContacts.refresh(ss.getFirstElement()); } }); } protected DataBindingContext initDataBindings() { DataBindingContext bindingContext = new DataBindingContext(); tableViewerContacts.setContentProvider(contentProvider); IObservableMap[] observeMaps = BeansObservables.observeMaps(contentProvider.getKnownElements(), IContact.class, new String[] { "description1", "description2", "mandator", "patient", "user" }); ILabelDecorator decorator = PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator(); tableViewerContacts.setLabelProvider(new TableDecoratingLabelProvider( new ContactSelectorObservableMapLabelProvider(observeMaps), decorator)); tableViewerContacts.setInput(contactList); return bindingContext; } public void addContact(IContact contact) { contactList.add(contact); } @Override public void setFocus() { txtFilter.setFocus(); tableViewerContacts.refresh(); } @Override public Object getAdapter(@SuppressWarnings("rawtypes") Class adapter) { if (adapter == IPropertySheetPage.class) return new TabbedPropertySheetPage(this); return super.getAdapter(adapter); } @Override public String getContributorId() { return getSite().getId(); } /** * Listener for the txtFilter text control. Updates the search text filter in * {@link KontaktAnzeigeTextFieldViewerFilter} on key press. */ private class FilterKeyListener extends KeyAdapter { private Text text; private StructuredViewer viewer; FilterKeyListener(Text filterTxt, StructuredViewer viewer) { text = filterTxt; this.viewer = viewer; } @Override public void keyPressed(KeyEvent e) { text.setMessage(""); } public void keyReleased(KeyEvent ke) { String txt = text.getText(); // We have a formula, if the string starts with "=" if (txt.startsWith("=")) { String formula; if (txt.contains(";")) { formula = txt.substring(1, txt.indexOf(";")); Map<String, Object> functions = new HashMap<>(); functions.put("math", Math.class); JexlEngine jexl = new JexlEngine(); jexl.setLenient(false); jexl.setFunctions(functions); try { Expression expr = jexl.createExpression(formula); Object result = expr.evaluate(new MapContext()); text.setText(""); text.setMessage(formula + "=" + result + ""); result = null; } catch (JexlException e) { text.setText(""); text.setMessage("Invalid expression: " + formula); } } return; } if (txt.length() > 1) { filterPositionTitle.setSearchText(txt); viewer.getControl().setRedraw(false); viewer.refresh(); viewer.getControl().setRedraw(true); } else { filterPositionTitle.setSearchText(null); viewer.getControl().setRedraw(false); viewer.refresh(); viewer.getControl().setRedraw(true); } } } private class LoadContactsRunnable implements Runnable { @Override public void run() { // Date d, e, f, g, h, i, j; // d = new Date(); Query<Kontakt> qbe = new Query<Kontakt>(Kontakt.class, null, null, Kontakt.TABLENAME, new String[] { Kontakt.FLD_DELETED, Kontakt.FLD_IS_PERSON, Kontakt.FLD_IS_ORGANIZATION, Kontakt.FLD_IS_MANDATOR, Kontakt.FLD_IS_USER, Kontakt.FLD_IS_PATIENT, Kontakt.FLD_NAME1, Kontakt.FLD_NAME2, Kontakt.FLD_NAME3, Person.BIRTHDATE, Person.SEX, Patient.FLD_PATID, Person.TITLE, Person.FLD_TITLE_SUFFIX }); // e = new Date(); List<Kontakt> qre = qbe.execute(); // f = new Date(); // 2598 List<? extends IContact> result = ContactBeanFactory.createContactBeans(qre); // g = new Date(); lblStatus.setText(qbe.size() + " contacts found."); // h = new Date(); // 4001 !!! tableViewerContacts.getControl().setRedraw(false); contactList.clear(); contactList.addAll(result); // i = new Date(); // j = new Date(); tableViewerContacts.getControl().setRedraw(true); // System.out.println("d-e: "+(e.getTime()-d.getTime())); // System.out.println("e-f: "+(f.getTime()-e.getTime())); // System.out.println("f-g: "+(g.getTime()-f.getTime())); // System.out.println("g-h: "+(h.getTime()-g.getTime())); // System.out.println("h-i: "+(i.getTime()-h.getTime())); // System.out.println("i-j: "+(j.getTime()-i.getTime())); // System.out.println("sum: "+(i.getTime()-d.getTime())); } } /** * Forwards selections in the contact viewer table to the ElexisEventDispatcher */ private class ContactSelectionChangedToEventDispatcher implements ISelectionChangedListener { @Override public void selectionChanged(SelectionChangedEvent event) { ISelection selection = event.getSelection(); if (selection == null) return; IStructuredSelection strucSelection = (IStructuredSelection) selection; Object selectedObject = strucSelection.getFirstElement(); if (selectedObject == null) return; if (selectedObject instanceof IContact) { IContact contact = (IContact) selectedObject; if (contact.isPatient()) { ElexisEventDispatcher.fireSelectionEvent(Patient.load(contact.getId())); } } } } }