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.EventIterator;
  14 import javax.jcr.observation.EventListener;
  15 import javax.jcr.observation.ObservationManager;
  16 import javax.jcr.query.Query;
  17
  18 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  19 import org.argeo.eclipse.ui.jcr.NodeElementComparer;
  20 import org.argeo.jcr.JcrUtils;
  21 import org.argeo.slc.SlcException;
  22 import org.argeo.slc.client.ui.editors.ProcessEditor;
  23 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  24 import org.argeo.slc.jcr.SlcJcrConstants;
  25 import org.argeo.slc.jcr.SlcNames;
  26 import org.argeo.slc.jcr.SlcTypes;
  27 import org.eclipse.jface.viewers.ColumnLabelProvider;
  28 import org.eclipse.jface.viewers.DoubleClickEvent;
  29 import org.eclipse.jface.viewers.IBaseLabelProvider;
  30 import org.eclipse.jface.viewers.IDoubleClickListener;
  31 import org.eclipse.jface.viewers.IStructuredContentProvider;
  32 import org.eclipse.jface.viewers.IStructuredSelection;
  33 import org.eclipse.jface.viewers.ITableLabelProvider;
  34 import org.eclipse.jface.viewers.TableViewer;
  35 import org.eclipse.jface.viewers.Viewer;
  36 import org.eclipse.swt.SWT;
  37 import org.eclipse.swt.graphics.Image;
  38 import org.eclipse.swt.widgets.Composite;
  39 import org.eclipse.swt.widgets.Display;
  40 import org.eclipse.swt.widgets.Table;
  41 import org.eclipse.swt.widgets.TableColumn;
  42 import org.eclipse.ui.IWorkbenchPage;
  43 import org.eclipse.ui.PlatformUI;
  44 import org.eclipse.ui.part.ViewPart;
  45
  46 /** Displays results. */
  47 public class JcrResultListView extends ViewPart implements SlcNames {
  48         public static final String ID = "org.argeo.slc.client.ui.jcrResultListView";
  49
  50         private TableViewer viewer;
  51
  52         private Session session;
  53
  54         private EventListener resultsObserver;
  55
  56         private DateFormat dateFormat = new SimpleDateFormat(
  57                         "EEE, dd MMM yyyy HH:mm:ss");
  58         private Integer queryLimit = 2000;
  59
  60         public void createPartControl(Composite parent) {
  61
  62                 Table table = createTable(parent);
  63                 viewer = new TableViewer(table);
  64                 viewer.setLabelProvider(createLabelProvider());
  65                 viewer.setContentProvider(new ViewContentProvider());
  66                 viewer.setInput(getViewSite());
  67                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  68                 viewer.setComparer(new NodeElementComparer());
  69
  70                 getViewSite().setSelectionProvider(viewer);
  71
  72                 resultsObserver = new ResultObserver(viewer.getTable().getDisplay());
  73                 try {
  74                         ObservationManager observationManager = session.getWorkspace()
  75                                         .getObservationManager();
  76                         String[] nodeTypes = { SlcTypes.SLC_RESULT };
  77                         // FIXME Will not be notified if empty result is deleted
  78                         observationManager.addEventListener(resultsObserver,
  79                                         Event.PROPERTY_ADDED | Event.NODE_REMOVED,
  80                                         SlcJcrConstants.RESULTS_BASE_PATH, true, null, nodeTypes,
  81                                         false);
  82                 } catch (RepositoryException e) {
  83                         throw new SlcException("Cannot register listeners", e);
  84                 }
  85
  86         }
  87
  88         protected Table createTable(Composite parent) {
  89                 int style = SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
  90                                 | SWT.FULL_SELECTION | SWT.MULTI;
  91                 // does not work with RAP, commented for the time being
  92                 // | SWT.HIDE_SELECTION;
  93
  94                 Table table = new Table(parent, style);
  95
  96                 table.setLinesVisible(true);
  97                 table.setHeaderVisible(true);
  98
  99                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 100                 column.setText("Date");
 101                 column.setWidth(200);
 102
 103                 column = new TableColumn(table, SWT.LEFT, 1);
 104                 column.setText("Id");
 105                 column.setWidth(300);
 106
 107                 return table;
 108         }
 109
 110         // public void refresh() {
 111         // viewer.refresh();
 112         // }
 113
 114         /*
 115          * METHODS TO BE OVERRIDDEN
 116          */
 117         protected IBaseLabelProvider createLabelProvider() {
 118                 return new ViewLabelProvider();
 119         }
 120
 121         protected void processDoubleClick(DoubleClickEvent evt) {
 122                 Object obj = ((IStructuredSelection) evt.getSelection())
 123                                 .getFirstElement();
 124                 try {
 125                         if (obj instanceof Node) {
 126                                 Node node = (Node) obj;
 127                                 // FIXME: open a default result editor
 128                                 if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 129                                         IWorkbenchPage activePage = PlatformUI.getWorkbench()
 130                                                         .getActiveWorkbenchWindow().getActivePage();
 131                                         activePage.openEditor(
 132                                                         new ProcessEditorInput(node.getPath()),
 133                                                         ProcessEditor.ID);
 134                                 }
 135                         }
 136                 } catch (Exception e) {
 137                         throw new SlcException("Cannot open " + obj, e);
 138                 }
 139         }
 140
 141         public void setFocus() {
 142                 viewer.getControl().setFocus();
 143         }
 144
 145         @Override
 146         public void dispose() {
 147                 JcrUtils.unregisterQuietly(session.getWorkspace(), resultsObserver);
 148                 super.dispose();
 149         }
 150
 151         class ViewContentProvider implements IStructuredContentProvider {
 152
 153                 public Object[] getElements(Object inputElement) {
 154                         try {
 155                                 // TODO filter, optimize with virtual table, ...
 156                                 String sql = "SELECT * from [slc:result] ORDER BY [jcr:lastModified] DESC";
 157                                 Query query = session.getWorkspace().getQueryManager()
 158                                                 .createQuery(sql, Query.JCR_SQL2);
 159                                 // TODO paging
 160                                 query.setLimit(queryLimit);
 161                                 List<Node> nodes = new ArrayList<Node>();
 162                                 for (NodeIterator nit = query.execute().getNodes(); nit
 163                                                 .hasNext();) {
 164                                         nodes.add(nit.nextNode());
 165                                 }
 166                                 return nodes.toArray();
 167                         } catch (RepositoryException e) {
 168                                 throw new SlcException("Cannot retrieve processes", e);
 169                         }
 170                 }
 171
 172                 public void dispose() {
 173                 }
 174
 175                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 176                 }
 177
 178         }
 179
 180         class ViewLabelProvider extends ColumnLabelProvider implements
 181                         ITableLabelProvider {
 182
 183                 public Image getColumnImage(Object obj, int columnIndex) {
 184                         if (columnIndex != 0)
 185                                 return null;
 186                         try {
 187                                 Node node = (Node) obj;
 188                                 if (node.hasProperty(SLC_COMPLETED)) {
 189                                         // TODO
 190                                 }
 191                                 return null;
 192                         } catch (RepositoryException e) {
 193                                 throw new SlcException("Cannot get column text", e);
 194                         }
 195                 }
 196
 197                 public String getColumnText(Object obj, int index) {
 198                         try {
 199                                 Node node = (Node) obj;
 200                                 switch (index) {
 201
 202                                 case 0:
 203                                         if (node.hasProperty(SLC_COMPLETED)) {
 204                                                 return dateFormat
 205                                                                 .format(node.getProperty(SLC_COMPLETED)
 206                                                                                 .getDate().getTime());
 207                                         } else {
 208                                                 return "OPEN";
 209                                         }
 210                                 case 1:
 211                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 212                                 }
 213                                 return getText(obj);
 214                         } catch (RepositoryException e) {
 215                                 throw new SlcException("Cannot get column text", e);
 216                         }
 217                 }
 218
 219         }
 220
 221         class ViewDoubleClickListener implements IDoubleClickListener {
 222                 public void doubleClick(DoubleClickEvent evt) {
 223                         processDoubleClick(evt);
 224                 }
 225
 226         }
 227
 228         class ResultObserver extends AsyncUiEventListener {
 229
 230                 public ResultObserver(Display display) {
 231                         super(display);
 232                 }
 233
 234                 @Override
 235                 protected Boolean willProcessInUiThread(List<Event> events)
 236                                 throws RepositoryException {
 237                         for (Event event : events) {
 238                                 // getLog().debug("Received event " + event);
 239                                 int eventType = event.getType();
 240                                 if (eventType == Event.NODE_REMOVED)
 241                                         return true;
 242                                 // if (event.getType() == Event.PROPERTY_ADDED) {
 243                                 String path = event.getPath();
 244                                 // getLog().debug(path);
 245                                 int index = path.lastIndexOf('/');
 246                                 String propertyName = path.substring(index + 1);
 247                                 // Property property = session.getProperty(path);
 248                                 // if (!property.getName().equals(SLC_COMPLETED))
 249                                 // return true;
 250                                 if (propertyName.equals(SLC_COMPLETED)
 251                                                 || propertyName.equals(SLC_UUID)) {
 252                                         // getLog().debug("Kept " + propertyName);
 253                                         return true;
 254                                 } else {
 255                                         // getLog().debug("Skipped " + propertyName);
 256                                 }
 257                                 // } else if (eventType == Event.NODE_ADDED
 258                                 // || eventType == Event.NODE_MOVED
 259                                 // || eventType == Event.NODE_REMOVED) {
 260                                 // return true;
 261                                 // } else {
 262                                 // }
 263                         }
 264                         return false;
 265                 }
 266
 267                 protected void onEventInUiThread(List<Event> events)
 268                                 throws RepositoryException {
 269                         if (getLog().isDebugEnabled())
 270                                 getLog().debug("Refresh result list");
 271                         viewer.refresh();
 272                 }
 273
 274         }
 275
 276         public void setSession(Session session) {
 277                 this.session = session;
 278         }
 279
 280 }