Java tutorial
/******************************************************************************* * Copyright (c) 2006-2010, Daniel Lutz and Elexis * 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: * Daniel Lutz - initial implementation * *******************************************************************************/ package ch.elexis.core.ui.views.rechnung; import java.util.Collections; import java.util.Comparator; import java.util.List; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.jface.action.Action; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.Clipboard; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FillLayout; 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.TableColumn; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.ui.ISaveablePart2; import org.eclipse.ui.forms.widgets.Form; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.part.ViewPart; import ch.elexis.core.data.activator.CoreHub; import ch.elexis.core.data.events.ElexisEvent; import ch.elexis.core.data.events.ElexisEventDispatcher; import ch.elexis.core.data.events.ElexisEventListener; import ch.elexis.core.ui.UiDesk; import ch.elexis.core.ui.actions.GlobalActions; import ch.elexis.core.ui.actions.GlobalEventDispatcher; import ch.elexis.core.ui.actions.IActivationListener; import ch.elexis.core.ui.util.SWTHelper; import ch.elexis.core.ui.util.ViewMenus; import ch.elexis.data.Patient; import ch.elexis.data.Rechnung; import ch.elexis.data.RnStatus; import ch.elexis.data.Zahlung; import ch.rgw.tools.Money; /** * This view shows the current patient's account */ public class BillSummary extends ViewPart implements IActivationListener, ElexisEventListener, ISaveablePart2 { public static final String ID = "ch.elexis.views.rechnung.BillSummary"; //$NON-NLS-1$ // command from org.eclipse.ui private static final String COMMAND_COPY = "org.eclipse.ui.edit.copy"; //$NON-NLS-1$ private FormToolkit tk; private Form form; private Label totalLabel; private Label paidLabel; private Label openLabel; private TableViewer billsViewer; private Patient actPatient; private Action exportToClipboardAction; // column indices private static final int NUMBER = 0; private static final int DATE = 1; private static final int AMOUNT = 2; private static final int AMOUNT_DUE = 3; private static final int STATUS = 4; private static final int GARANT = 5; private static boolean bReverse = true; private static final String[] COLUMN_TEXT = { Messages.BillSummary_number, // NUMBER //$NON-NLS-1$ Messages.BillSummary_date, // DATE //$NON-NLS-1$ Messages.BillSummary_amount, // AMOUNT //$NON-NLS-1$ Messages.BillSummary_open, // AMOUNT_DUE //$NON-NLS-1$ Messages.BillSummary_state, // STATUS //$NON-NLS-1$ Messages.BillSummary_receiver, // GARANT //$NON-NLS-1$ }; private static final int[] COLUMN_WIDTH = { 80, // NUMBER 80, // DATE 80, // AMOUNT 80, // AMOUNT_DUE 80, // STATUS 80, // GARANT }; class SortListener extends SelectionAdapter { @Override public void widgetSelected(SelectionEvent e) { bReverse = !bReverse; billsViewer.refresh(); } } private List<Rechnung> getRechnungen(Patient patient) { List<Rechnung> rechnungen = patient.getRechnungen(); Collections.sort(rechnungen, new Comparator<Rechnung>() { // compare on bill number public int compare(Rechnung r1, Rechnung r2) { // both null, consider as equal if (r1 == null && r2 == null) { return 0; } // r1 is null, r2 not. sort r2 before r1 if (r1 == null) { return bReverse ? -1 : 1; } // r2 is null, r1 not. sort r1 before r2 if (r2 == null) { return bReverse ? 1 : -1; } try { Integer number1 = new Integer(r1.getNr()); Integer number2 = new Integer(r2.getNr()); return bReverse ? number2.compareTo(number1) : number1.compareTo(number2); } catch (NumberFormatException ex) { // error, consider equal return 0; } } // compare on id public boolean equals(Object obj) { return (this == obj); } }); return rechnungen; } public void createPartControl(Composite parent) { parent.setLayout(new FillLayout()); tk = UiDesk.getToolkit(); form = tk.createForm(parent); form.getBody().setLayout(new GridLayout(1, false)); // general infos Composite generalArea = tk.createComposite(form.getBody()); generalArea.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); generalArea.setLayout(new GridLayout(2, false)); tk.createLabel(generalArea, Messages.BillSummary_total); //$NON-NLS-1$ totalLabel = tk.createLabel(generalArea, ""); //$NON-NLS-1$ totalLabel.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); tk.createLabel(generalArea, Messages.BillSummary_paid); //$NON-NLS-1$ paidLabel = tk.createLabel(generalArea, ""); //$NON-NLS-1$ paidLabel.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); tk.createLabel(generalArea, Messages.BillSummary_open2); //$NON-NLS-1$ openLabel = tk.createLabel(generalArea, ""); //$NON-NLS-1$ openLabel.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); // bills billsViewer = new TableViewer(form.getBody(), SWT.SINGLE | SWT.FULL_SELECTION); Table table = billsViewer.getTable(); table.setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); tk.adapt(table); table.setHeaderVisible(true); table.setLinesVisible(true); // columns TableColumn[] tc = new TableColumn[COLUMN_TEXT.length]; for (int i = 0; i < COLUMN_TEXT.length; i++) { tc[i] = new TableColumn(table, SWT.NONE); tc[i].setText(COLUMN_TEXT[i]); tc[i].setWidth(COLUMN_WIDTH[i]); } // Allow sorting on date ascending and descending SortListener sortListener = new SortListener(); tc[1].addSelectionListener(sortListener); billsViewer.setContentProvider(new IStructuredContentProvider() { public Object[] getElements(Object inputElement) { if (actPatient == null) { return new Object[] { Messages.BillSummary_NoPatientSelected }; } return getRechnungen(actPatient).toArray(); } public void dispose() { // nothing to do } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // nothing to do } }); billsViewer.setLabelProvider(new ITableLabelProvider() { public void addListener(ILabelProviderListener listener) { // nothing to do } public void removeListener(ILabelProviderListener listener) { // nothing to do } public void dispose() { // nothing to do } public String getColumnText(Object element, int columnIndex) { if (!(element instanceof Rechnung)) { return ""; //$NON-NLS-1$ } Rechnung rechnung = (Rechnung) element; String text = ""; //$NON-NLS-1$ switch (columnIndex) { case NUMBER: text = rechnung.get(Rechnung.BILL_NUMBER); break; case DATE: text = rechnung.get(Rechnung.BILL_DATE); break; case AMOUNT: text = rechnung.getBetrag().toString(); break; case AMOUNT_DUE: text = rechnung.getOffenerBetrag().toString(); break; case STATUS: text = RnStatus.getStatusText(rechnung.getStatus()); break; case GARANT: text = rechnung.getFall().getGarant().getLabel(); break; } return text; } public Image getColumnImage(Object element, int columnIndex) { return null; } public boolean isLabelProperty(Object element, String property) { return false; } }); billsViewer.setInput(getViewSite()); makeActions(); ViewMenus menu = new ViewMenus(getViewSite()); menu.createMenu(exportToClipboardAction); GlobalEventDispatcher.addActivationListener(this, this); billsViewer.addSelectionChangedListener(GlobalEventDispatcher.getInstance().getDefaultListener()); } /** * Passing the focus request to the viewer's control. */ public void setFocus() { billsViewer.getControl().setFocus(); } @Override public void dispose() { GlobalEventDispatcher.removeActivationListener(this, this); billsViewer.removeSelectionChangedListener(GlobalEventDispatcher.getInstance().getDefaultListener()); super.dispose(); } private void setPatient(Patient patient) { actPatient = patient; String title = ""; //$NON-NLS-1$ if (actPatient != null) { title = actPatient.getLabel(); } else { title = Messages.BillSummary_NoPatientSelected; //$NON-NLS-1$ } form.setText(title); setGeneralText(); billsViewer.refresh(); form.layout(); } // maybe called from foreign thread private void setGeneralText() { // check wheter the labels are valid, since we may be called // from a different thread if (totalLabel.isDisposed() || paidLabel.isDisposed() || openLabel.isDisposed()) { return; } String totalText = ""; //$NON-NLS-1$ String paidText = ""; //$NON-NLS-1$ String openText = ""; //$NON-NLS-1$ if (actPatient != null) { Money total = new Money(0); Money paid = new Money(0); List<Rechnung> rechnungen = actPatient.getRechnungen(); for (Rechnung rechnung : rechnungen) { // don't consider canceled bills if (rechnung.getStatus() != RnStatus.STORNIERT) { total.addMoney(rechnung.getBetrag()); for (Zahlung zahlung : rechnung.getZahlungen()) { paid.addMoney(zahlung.getBetrag()); } } } Money open = new Money(total); open.subtractMoney(paid); totalText = total.toString(); paidText = paid.toString(); openText = open.toString(); } totalLabel.setText(totalText); paidLabel.setText(paidText); openLabel.setText(openText); } /* * ActivationListener */ public void activation(boolean mode) { // nothing to do } public void visible(boolean mode) { if (mode == true) { ElexisEventDispatcher.getInstance().addListeners(this); Patient patient = ElexisEventDispatcher.getSelectedPatient(); setPatient(patient); } else { ElexisEventDispatcher.getInstance().removeListeners(this); setPatient(null); } }; /* * Die folgenden 6 Methoden implementieren das Interface ISaveablePart2 Wir bentigen das * Interface nur, um das Schliessen einer View zu verhindern, wenn die Perspektive fixiert ist. * Gibt es da keine einfachere Methode? */ public int promptToSaveOnClose() { return GlobalActions.fixLayoutAction.isChecked() ? ISaveablePart2.CANCEL : ISaveablePart2.NO; } public void doSave(IProgressMonitor monitor) { /* leer */ } public void doSaveAs() { /* leer */ } public boolean isDirty() { return true; } public boolean isSaveAsAllowed() { return false; } public boolean isSaveOnCloseNeeded() { return true; } /* * class AccountEntry { TimeTool date; Money amount; String remarks; * * AccountEntry(TimeTool date, Money amount, String remarks) { this.date = date; this.amount = * amount; this.remarks = remarks; * * if (remarks == null) { remarks = ""; } } } */ private void makeActions() { exportToClipboardAction = new Action(Messages.BillSummary_exportToClipboard) { //$NON-NLS-1$ { setToolTipText(Messages.BillSummary_SummaryToClipboard); //$NON-NLS-1$ } public void run() { exportToClipboard(); } }; exportToClipboardAction.setActionDefinitionId(COMMAND_COPY); GlobalActions.registerActionHandler(this, exportToClipboardAction); } private void exportToClipboard() { String clipboardText = ""; //$NON-NLS-1$ String lineSeparator = System.getProperty("line.separator"); //$NON-NLS-1$ if (actPatient != null) { List<Rechnung> rechnungen = getRechnungen(actPatient); StringBuffer sbTable = new StringBuffer(); StringBuffer sbHeader = new StringBuffer(); sbHeader.append(COLUMN_TEXT[NUMBER]); sbHeader.append("\t"); //$NON-NLS-1$ sbHeader.append(COLUMN_TEXT[DATE]); sbHeader.append("\t"); //$NON-NLS-1$ sbHeader.append(COLUMN_TEXT[AMOUNT]); sbHeader.append("\t"); //$NON-NLS-1$ sbHeader.append(COLUMN_TEXT[AMOUNT_DUE]); sbHeader.append("\t"); //$NON-NLS-1$ sbHeader.append(COLUMN_TEXT[STATUS]); sbHeader.append("\t"); //$NON-NLS-1$ sbHeader.append(COLUMN_TEXT[GARANT]); sbHeader.append(lineSeparator); sbTable.append(sbHeader); for (Rechnung rechnung : rechnungen) { StringBuffer sbLine = new StringBuffer(); sbLine.append(rechnung.get(Rechnung.BILL_NUMBER)); sbLine.append("\t"); //$NON-NLS-1$ sbLine.append(rechnung.get(Rechnung.BILL_DATE)); sbLine.append("\t"); //$NON-NLS-1$ sbLine.append(rechnung.getBetrag().toString()); sbLine.append("\t"); //$NON-NLS-1$ sbLine.append(rechnung.getOffenerBetrag().toString()); sbLine.append("\t"); //$NON-NLS-1$ sbLine.append(RnStatus.getStatusText(rechnung.getStatus())); sbLine.append("\t"); //$NON-NLS-1$ sbLine.append(rechnung.getFall().getGarant().getLabel()); sbLine.append(lineSeparator); sbTable.append(sbLine); } clipboardText = sbTable.toString(); } else { clipboardText = Messages.BillSummary_noBillsAvailable; //$NON-NLS-1$ } Clipboard clipboard = new Clipboard(UiDesk.getDisplay()); TextTransfer textTransfer = TextTransfer.getInstance(); Transfer[] transfers = new Transfer[] { textTransfer }; Object[] data = new Object[] { clipboardText }; clipboard.setContents(data, transfers); clipboard.dispose(); } public void catchElexisEvent(final ElexisEvent ev) { UiDesk.asyncExec(new Runnable() { public void run() { if (ev.getType() == ElexisEvent.EVENT_SELECTED) { setPatient((Patient) ev.getObject()); } else if (ev.getType() == ElexisEvent.EVENT_DESELECTED) { setPatient(null); } } }); } private final ElexisEvent eetmpl = new ElexisEvent(null, Patient.class, ElexisEvent.EVENT_SELECTED | ElexisEvent.EVENT_DESELECTED); public ElexisEvent getElexisEventFilter() { return eetmpl; } }