eclipse/plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/views/JcrResultListView.java

   1 package org.argeo.slc.client.ui.views;
   2
   3 import java.text.DateFormat;
   4 import java.text.SimpleDateFormat;
   5 import java.util.ArrayList;
   6 import java.util.List;
   7
   8 import javax.jcr.Node;
   9 import javax.jcr.NodeIterator;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.Session;
  12 import javax.jcr.observation.Event;
  13 import javax.jcr.observation.EventListener;
  14 import javax.jcr.observation.ObservationManager;
  15 import javax.jcr.query.Query;
  16
  17 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  18 import org.argeo.eclipse.ui.jcr.NodeElementComparer;
  19 import org.argeo.jcr.JcrUtils;
  20 import org.argeo.slc.SlcException;
  21 import org.argeo.slc.client.ui.editors.ProcessEditor;
  22 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  23 import org.argeo.slc.jcr.SlcJcrConstants;
  24 import org.argeo.slc.jcr.SlcNames;
  25 import org.argeo.slc.jcr.SlcTypes;
  26 import org.eclipse.jface.viewers.ColumnLabelProvider;
  27 import org.eclipse.jface.viewers.DoubleClickEvent;
  28 import org.eclipse.jface.viewers.IBaseLabelProvider;
  29 import org.eclipse.jface.viewers.IDoubleClickListener;
  30 import org.eclipse.jface.viewers.IStructuredContentProvider;
  31 import org.eclipse.jface.viewers.IStructuredSelection;
  32 import org.eclipse.jface.viewers.ITableLabelProvider;
  33 import org.eclipse.jface.viewers.TableViewer;
  34 import org.eclipse.jface.viewers.Viewer;
  35 import org.eclipse.swt.SWT;
  36 import org.eclipse.swt.graphics.Image;
  37 import org.eclipse.swt.widgets.Composite;
  38 import org.eclipse.swt.widgets.Display;
  39 import org.eclipse.swt.widgets.Table;
  40 import org.eclipse.swt.widgets.TableColumn;
  41 import org.eclipse.ui.IWorkbenchPage;
  42 import org.eclipse.ui.PlatformUI;
  43 import org.eclipse.ui.part.ViewPart;
  44
  45 /** Displays results. */
  46 public class JcrResultListView extends ViewPart implements SlcNames {
  47         public static final String ID = "org.argeo.slc.client.ui.jcrResultListView";
  48
  49         private TableViewer viewer;
  50
  51         private Session session;
  52
  53         private EventListener resultsObserver;
  54
  55         private DateFormat dateFormat = new SimpleDateFormat(
  56                         "EEE, dd MMM yyyy HH:mm:ss");
  57         private Integer queryLimit = 2000;
  58
  59         public void createPartControl(Composite parent) {
  60
  61                 Table table = createTable(parent);
  62                 viewer = new TableViewer(table);
  63                 viewer.setLabelProvider(createLabelProvider());
  64                 viewer.setContentProvider(new ViewContentProvider());
  65                 viewer.setInput(getViewSite());
  66                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  67                 viewer.setComparer(new NodeElementComparer());
  68
  69                 getViewSite().setSelectionProvider(viewer);
  70
  71                 resultsObserver = new ResultObserver(viewer.getTable().getDisplay());
  72                 try {
  73                         ObservationManager observationManager = session.getWorkspace()
  74                                         .getObservationManager();
  75                         String[] nodeTypes = { SlcTypes.SLC_RESULT };
  76                         // FIXME Will not be notified if empty result is deleted
  77                         observationManager.addEventListener(resultsObserver,
  78                                         Event.PROPERTY_ADDED | Event.NODE_REMOVED,
  79                                         SlcJcrConstants.RESULTS_BASE_PATH, true, null, nodeTypes,
  80                                         false);
  81                 } catch (RepositoryException e) {
  82                         throw new SlcException("Cannot register listeners", e);
  83                 }
  84
  85         }
  86
  87         protected Table createTable(Composite parent) {
  88                 int style = SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
  89                                 | SWT.FULL_SELECTION | SWT.MULTI;
  90                 // does not work with RAP, commented for the time being
  91                 // | SWT.HIDE_SELECTION;
  92
  93                 Table table = new Table(parent, style);
  94
  95                 table.setLinesVisible(true);
  96                 table.setHeaderVisible(true);
  97
  98                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
  99                 column.setText("Date");
 100                 column.setWidth(200);
 101
 102                 column = new TableColumn(table, SWT.LEFT, 1);
 103                 column.setText("Id");
 104                 column.setWidth(300);
 105
 106                 return table;
 107         }
 108
 109         // public void refresh() {
 110         // viewer.refresh();
 111         // }
 112
 113         /*
 114          * METHODS TO BE OVERRIDDEN
 115          */
 116         protected IBaseLabelProvider createLabelProvider() {
 117                 return new ViewLabelProvider();
 118         }
 119
 120         protected void processDoubleClick(DoubleClickEvent evt) {
 121                 Object obj = ((IStructuredSelection) evt.getSelection())
 122                                 .getFirstElement();
 123                 try {
 124                         if (obj instanceof Node) {
 125                                 Node node = (Node) obj;
 126                                 // FIXME: open a default result editor
 127                                 if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 128                                         IWorkbenchPage activePage = PlatformUI.getWorkbench()
 129                                                         .getActiveWorkbenchWindow().getActivePage();
 130                                         activePage.openEditor(
 131                                                         new ProcessEditorInput(node.getPath()),
 132                                                         ProcessEditor.ID);
 133                                 }
 134                         }
 135                 } catch (Exception e) {
 136                         throw new SlcException("Cannot open " + obj, e);
 137                 }
 138         }
 139
 140         public void setFocus() {
 141                 viewer.getControl().setFocus();
 142         }
 143
 144         @Override
 145         public void dispose() {
 146                 JcrUtils.unregisterQuietly(session.getWorkspace(), resultsObserver);
 147                 super.dispose();
 148         }
 149
 150         class ViewContentProvider implements IStructuredContentProvider {
 151
 152                 public Object[] getElements(Object inputElement) {
 153                         try {
 154                                 // TODO filter, optimize with virtual table, ...
 155                                 String sql = "SELECT * from [slc:result] ORDER BY [jcr:lastModified] DESC";
 156                                 Query query = session.getWorkspace().getQueryManager()
 157                                                 .createQuery(sql, Query.JCR_SQL2);
 158                                 // TODO paging
 159                                 query.setLimit(queryLimit);
 160                                 List<Node> nodes = new ArrayList<Node>();
 161                                 for (NodeIterator nit = query.execute().getNodes(); nit
 162                                                 .hasNext();) {
 163                                         nodes.add(nit.nextNode());
 164                                 }
 165                                 return nodes.toArray();
 166                         } catch (RepositoryException e) {
 167                                 throw new SlcException("Cannot retrieve processes", e);
 168                         }
 169                 }
 170
 171                 public void dispose() {
 172                 }
 173
 174                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 175                 }
 176
 177         }
 178
 179         class ViewLabelProvider extends ColumnLabelProvider implements
 180                         ITableLabelProvider {
 181
 182                 public Image getColumnImage(Object obj, int columnIndex) {
 183                         if (columnIndex != 0)
 184                                 return null;
 185                         try {
 186                                 Node node = (Node) obj;
 187                                 if (node.hasProperty(SLC_COMPLETED)) {
 188                                         // TODO
 189                                 }
 190                                 return null;
 191                         } catch (RepositoryException e) {
 192                                 throw new SlcException("Cannot get column text", e);
 193                         }
 194                 }
 195
 196                 public String getColumnText(Object obj, int index) {
 197                         try {
 198                                 Node node = (Node) obj;
 199                                 switch (index) {
 200
 201                                 case 0:
 202                                         if (node.hasProperty(SLC_COMPLETED)) {
 203                                                 return dateFormat
 204                                                                 .format(node.getProperty(SLC_COMPLETED)
 205                                                                                 .getDate().getTime());
 206                                         } else {
 207                                                 return "OPEN";
 208                                         }
 209                                 case 1:
 210                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 211                                 }
 212                                 return getText(obj);
 213                         } catch (RepositoryException e) {
 214                                 throw new SlcException("Cannot get column text", e);
 215                         }
 216                 }
 217
 218         }
 219
 220         class ViewDoubleClickListener implements IDoubleClickListener {
 221                 public void doubleClick(DoubleClickEvent evt) {
 222                         processDoubleClick(evt);
 223                 }
 224
 225         }
 226
 227         class ResultObserver extends AsyncUiEventListener {
 228
 229                 public ResultObserver(Display display) {
 230                         super(display);
 231                 }
 232
 233                 @Override
 234                 protected Boolean willProcessInUiThread(List<Event> events)
 235                                 throws RepositoryException {
 236                         for (Event event : events) {
 237                                 // getLog().debug("Received event " + event);
 238                                 int eventType = event.getType();
 239                                 if (eventType == Event.NODE_REMOVED)
 240                                         return true;
 241                                 String path = event.getPath();
 242                                 int index = path.lastIndexOf('/');
 243                                 String propertyName = path.substring(index + 1);
 244                                 if (propertyName.equals(SLC_COMPLETED)
 245                                                 || propertyName.equals(SLC_UUID)) {
 246                                         return true;
 247                                 }
 248                         }
 249                         return false;
 250                 }
 251
 252                 protected void onEventInUiThread(List<Event> events)
 253                                 throws RepositoryException {
 254                         if (getLog().isTraceEnabled())
 255                                 getLog().trace("Refresh result list");
 256                         viewer.refresh();
 257                 }
 258
 259         }
 260
 261         public void setSession(Session session) {
 262                 this.session = session;
 263         }
 264
 265 }