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

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.client.ui.views;
  17
  18 import java.text.DateFormat;
  19 import java.text.SimpleDateFormat;
  20 import java.util.ArrayList;
  21 import java.util.List;
  22
  23 import javax.jcr.Node;
  24 import javax.jcr.NodeIterator;
  25 import javax.jcr.RepositoryException;
  26 import javax.jcr.Session;
  27 import javax.jcr.observation.Event;
  28 import javax.jcr.observation.EventListener;
  29 import javax.jcr.observation.ObservationManager;
  30 import javax.jcr.query.Query;
  31
  32 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  33 import org.argeo.eclipse.ui.jcr.NodeElementComparer;
  34 import org.argeo.jcr.JcrUtils;
  35 import org.argeo.slc.SlcException;
  36 import org.argeo.slc.client.ui.ClientUiPlugin;
  37 import org.argeo.slc.client.ui.editors.ProcessEditor;
  38 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  39 import org.argeo.slc.jcr.SlcJcrResultUtils;
  40 import org.argeo.slc.jcr.SlcNames;
  41 import org.argeo.slc.jcr.SlcTypes;
  42 import org.eclipse.jface.viewers.ColumnLabelProvider;
  43 import org.eclipse.jface.viewers.DoubleClickEvent;
  44 import org.eclipse.jface.viewers.IBaseLabelProvider;
  45 import org.eclipse.jface.viewers.IDoubleClickListener;
  46 import org.eclipse.jface.viewers.IStructuredContentProvider;
  47 import org.eclipse.jface.viewers.IStructuredSelection;
  48 import org.eclipse.jface.viewers.ITableLabelProvider;
  49 import org.eclipse.jface.viewers.TableViewer;
  50 import org.eclipse.jface.viewers.Viewer;
  51 import org.eclipse.swt.SWT;
  52 import org.eclipse.swt.graphics.Image;
  53 import org.eclipse.swt.widgets.Composite;
  54 import org.eclipse.swt.widgets.Display;
  55 import org.eclipse.swt.widgets.Table;
  56 import org.eclipse.swt.widgets.TableColumn;
  57 import org.eclipse.ui.IWorkbenchPage;
  58 import org.eclipse.ui.PlatformUI;
  59 import org.eclipse.ui.part.ViewPart;
  60
  61 /** Displays results. */
  62 public class JcrResultListView extends ViewPart implements SlcNames {
  63         public static final String ID = ClientUiPlugin.ID + ".jcrResultListView";
  64
  65         private TableViewer viewer;
  66
  67         private Session session;
  68
  69         private EventListener resultsObserver;
  70
  71         private DateFormat dateFormat = new SimpleDateFormat(
  72                         "EEE, dd MMM yyyy HH:mm:ss");
  73         private Integer queryLimit = 2000;
  74
  75         public void createPartControl(Composite parent) {
  76
  77                 Table table = createTable(parent);
  78                 viewer = new TableViewer(table);
  79                 viewer.setLabelProvider(createLabelProvider());
  80                 viewer.setContentProvider(new ViewContentProvider());
  81                 viewer.setInput(getViewSite());
  82                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  83                 viewer.setComparer(new NodeElementComparer());
  84
  85                 getViewSite().setSelectionProvider(viewer);
  86
  87                 resultsObserver = new ResultObserver(viewer.getTable().getDisplay());
  88                 try {
  89                         ObservationManager observationManager = session.getWorkspace()
  90                                         .getObservationManager();
  91                         String[] nodeTypes = { SlcTypes.SLC_TEST_RESULT };
  92                         // FIXME Will not be notified if empty result is deleted
  93                         observationManager.addEventListener(resultsObserver,
  94                                         Event.PROPERTY_ADDED | Event.NODE_REMOVED,
  95                                         SlcJcrResultUtils.getSlcResultsBasePath(session), true,
  96                                         null, nodeTypes, false);
  97                 } catch (RepositoryException e) {
  98                         throw new SlcException("Cannot register listeners", e);
  99                 }
 100
 101         }
 102
 103         protected Table createTable(Composite parent) {
 104                 int style = SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
 105                                 | SWT.FULL_SELECTION | SWT.MULTI;
 106                 // does not work with RAP, commented for the time being
 107                 // | SWT.HIDE_SELECTION;
 108
 109                 Table table = new Table(parent, style);
 110
 111                 table.setLinesVisible(true);
 112                 table.setHeaderVisible(true);
 113
 114                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
 115                 column.setText("Date");
 116                 column.setWidth(200);
 117
 118                 column = new TableColumn(table, SWT.LEFT, 1);
 119                 column.setText("Id");
 120                 column.setWidth(300);
 121
 122                 return table;
 123         }
 124
 125         // public void refresh() {
 126         // viewer.refresh();
 127         // }
 128
 129         /*
 130          * METHODS TO BE OVERRIDDEN
 131          */
 132         protected IBaseLabelProvider createLabelProvider() {
 133                 return new ViewLabelProvider();
 134         }
 135
 136         protected void processDoubleClick(DoubleClickEvent evt) {
 137                 Object obj = ((IStructuredSelection) evt.getSelection())
 138                                 .getFirstElement();
 139                 try {
 140                         if (obj instanceof Node) {
 141                                 Node node = (Node) obj;
 142                                 // FIXME: open a default result editor
 143                                 if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 144                                         IWorkbenchPage activePage = PlatformUI.getWorkbench()
 145                                                         .getActiveWorkbenchWindow().getActivePage();
 146                                         activePage.openEditor(
 147                                                         new ProcessEditorInput(node.getPath()),
 148                                                         ProcessEditor.ID);
 149                                 }
 150                         }
 151                 } catch (Exception e) {
 152                         throw new SlcException("Cannot open " + obj, e);
 153                 }
 154         }
 155
 156         public void setFocus() {
 157                 viewer.getControl().setFocus();
 158         }
 159
 160         @Override
 161         public void dispose() {
 162                 JcrUtils.unregisterQuietly(session.getWorkspace(), resultsObserver);
 163                 super.dispose();
 164         }
 165
 166         class ViewContentProvider implements IStructuredContentProvider {
 167
 168                 public Object[] getElements(Object inputElement) {
 169                         try {
 170                                 // TODO filter, optimize with virtual table, ...
 171                                 String sql = "SELECT * from [" + SlcTypes.SLC_TEST_RESULT
 172                                                 + "] ORDER BY [jcr:lastModified] DESC";
 173                                 Query query = session.getWorkspace().getQueryManager()
 174                                                 .createQuery(sql, Query.JCR_SQL2);
 175                                 // TODO paging
 176                                 query.setLimit(queryLimit);
 177                                 List<Node> nodes = new ArrayList<Node>();
 178                                 for (NodeIterator nit = query.execute().getNodes(); nit
 179                                                 .hasNext();) {
 180                                         nodes.add(nit.nextNode());
 181                                 }
 182                                 return nodes.toArray();
 183                         } catch (RepositoryException e) {
 184                                 throw new SlcException("Cannot retrieve processes", e);
 185                         }
 186                 }
 187
 188                 public void dispose() {
 189                 }
 190
 191                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 192                 }
 193
 194         }
 195
 196         class ViewLabelProvider extends ColumnLabelProvider implements
 197                         ITableLabelProvider {
 198
 199                 public Image getColumnImage(Object obj, int columnIndex) {
 200                         if (columnIndex != 0)
 201                                 return null;
 202                         try {
 203                                 Node node = (Node) obj;
 204                                 if (node.hasProperty(SLC_COMPLETED)) {
 205                                         // TODO
 206                                 }
 207                                 return null;
 208                         } catch (RepositoryException e) {
 209                                 throw new SlcException("Cannot get column text", e);
 210                         }
 211                 }
 212
 213                 public String getColumnText(Object obj, int index) {
 214                         try {
 215                                 Node node = (Node) obj;
 216                                 switch (index) {
 217
 218                                 case 0:
 219                                         if (node.hasProperty(SLC_COMPLETED)) {
 220                                                 return dateFormat
 221                                                                 .format(node.getProperty(SLC_COMPLETED)
 222                                                                                 .getDate().getTime());
 223                                         } else {
 224                                                 return "OPEN";
 225                                         }
 226                                 case 1:
 227                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 228                                 }
 229                                 return getText(obj);
 230                         } catch (RepositoryException e) {
 231                                 throw new SlcException("Cannot get column text", e);
 232                         }
 233                 }
 234
 235         }
 236
 237         class ViewDoubleClickListener implements IDoubleClickListener {
 238                 public void doubleClick(DoubleClickEvent evt) {
 239                         processDoubleClick(evt);
 240                 }
 241
 242         }
 243
 244         class ResultObserver extends AsyncUiEventListener {
 245
 246                 public ResultObserver(Display display) {
 247                         super(display);
 248                 }
 249
 250                 @Override
 251                 protected Boolean willProcessInUiThread(List<Event> events)
 252                                 throws RepositoryException {
 253                         for (Event event : events) {
 254                                 // getLog().debug("Received event " + event);
 255                                 int eventType = event.getType();
 256                                 if (eventType == Event.NODE_REMOVED)
 257                                         return true;
 258                                 String path = event.getPath();
 259                                 int index = path.lastIndexOf('/');
 260                                 String propertyName = path.substring(index + 1);
 261                                 if (propertyName.equals(SLC_COMPLETED)
 262                                                 || propertyName.equals(SLC_UUID)) {
 263                                         return true;
 264                                 }
 265                         }
 266                         return false;
 267                 }
 268
 269                 protected void onEventInUiThread(List<Event> events)
 270                                 throws RepositoryException {
 271                         if (getLog().isTraceEnabled())
 272                                 getLog().trace("Refresh result list");
 273                         viewer.refresh();
 274                 }
 275
 276         }
 277
 278         public void setSession(Session session) {
 279                 this.session = session;
 280         }
 281 }