eclipse/plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/views/JcrProcessListView.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.Property;
  11 import javax.jcr.RepositoryException;
  12 import javax.jcr.Session;
  13 import javax.jcr.observation.Event;
  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.jcr.JcrUtils;
  20 import org.argeo.slc.SlcException;
  21 import org.argeo.slc.client.ui.SlcImages;
  22 import org.argeo.slc.client.ui.editors.ProcessEditor;
  23 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  24 import org.argeo.slc.execution.ExecutionProcess;
  25 import org.argeo.slc.jcr.SlcJcrConstants;
  26 import org.argeo.slc.jcr.SlcNames;
  27 import org.argeo.slc.jcr.SlcTypes;
  28 import org.eclipse.jface.viewers.ColumnLabelProvider;
  29 import org.eclipse.jface.viewers.DoubleClickEvent;
  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.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 processes. */
  46 public class JcrProcessListView extends ViewPart {
  47         public static final String ID = "org.argeo.slc.client.ui.jcrProcessListView";
  48
  49         private TableViewer viewer;
  50
  51         private Session session;
  52
  53         private EventListener processesObserver;
  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                 Table table = createTable(parent);
  61                 viewer = new TableViewer(table);
  62                 viewer.setLabelProvider(new LabelProvider());
  63                 viewer.setContentProvider(new ContentProvider());
  64                 viewer.setInput(getViewSite());
  65                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  66
  67                 processesObserver = new AsyncUiEventListener(viewer.getTable()
  68                                 .getDisplay()) {
  69                         protected void onEventInUiThread(List<Event> events) {
  70                                 // TODO optimize by updating only the changed process
  71                                 viewer.refresh();
  72                         }
  73                 };
  74                 try {
  75                         ObservationManager observationManager = session.getWorkspace()
  76                                         .getObservationManager();
  77                         observationManager.addEventListener(processesObserver,
  78                                         Event.NODE_ADDED | Event.NODE_REMOVED
  79                                                         | Event.PROPERTY_CHANGED,
  80                                         SlcJcrConstants.PROCESSES_BASE_PATH, true, null, null,
  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.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
  90                                 | SWT.FULL_SELECTION;
  91                 // does not function 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("Host");
 105                 column.setWidth(100);
 106
 107                 column = new TableColumn(table, SWT.LEFT, 2);
 108                 column.setText("Id");
 109                 column.setWidth(300);
 110
 111                 column = new TableColumn(table, SWT.LEFT, 3);
 112                 column.setText("Status");
 113                 column.setWidth(100);
 114
 115                 return table;
 116         }
 117
 118         public void setFocus() {
 119                 viewer.getControl().setFocus();
 120         }
 121
 122         @Override
 123         public void dispose() {
 124                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 125                 super.dispose();
 126         }
 127
 128         class ContentProvider implements IStructuredContentProvider {
 129
 130                 public Object[] getElements(Object inputElement) {
 131                         try {
 132                                 // TODO filter, optimize with virtual table, ...
 133                                 String sql = "SELECT * from [slc:process] ORDER BY [jcr:lastModified] DESC";
 134                                 Query query = session.getWorkspace().getQueryManager()
 135                                                 .createQuery(sql, Query.JCR_SQL2);
 136                                 // TODO paging
 137                                 query.setLimit(queryLimit);
 138                                 List<Node> nodes = new ArrayList<Node>();
 139                                 for (NodeIterator nit = query.execute().getNodes(); nit
 140                                                 .hasNext();) {
 141                                         nodes.add(nit.nextNode());
 142                                 }
 143                                 return nodes.toArray();
 144                         } catch (RepositoryException e) {
 145                                 throw new SlcException("Cannot retrieve processes", e);
 146                         }
 147                 }
 148
 149                 public void dispose() {
 150                 }
 151
 152                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 153                 }
 154
 155         }
 156
 157         class LabelProvider extends ColumnLabelProvider implements
 158                         ITableLabelProvider {
 159
 160                 public Image getColumnImage(Object obj, int columnIndex) {
 161                         if (columnIndex != 0)
 162                                 return null;
 163                         try {
 164                                 Node node = (Node) obj;
 165                                 String status = node.getProperty(SlcNames.SLC_STATUS)
 166                                                 .getString();
 167                                 if (status.equals(ExecutionProcess.NEW)
 168                                                 || status.equals(ExecutionProcess.INITIALIZED)
 169                                                 || status.equals(ExecutionProcess.SCHEDULED))
 170                                         return SlcImages.PROCESS_SCHEDULED;
 171                                 else if (status.equals(ExecutionProcess.ERROR)
 172                                                 || status.equals(ExecutionProcess.UNKOWN))
 173                                         return SlcImages.PROCESS_ERROR;
 174                                 else if (status.equals(ExecutionProcess.COMPLETED))
 175                                         return SlcImages.PROCESS_COMPLETED;
 176                                 else if (status.equals(ExecutionProcess.RUNNING))
 177                                         return SlcImages.PROCESS_RUNNING;
 178                                 else
 179                                         throw new SlcException("Unkown status " + status);
 180                         } catch (RepositoryException e) {
 181                                 throw new SlcException("Cannot get column text", e);
 182                         }
 183                 }
 184
 185                 public String getColumnText(Object obj, int index) {
 186                         try {
 187                                 Node node = (Node) obj;
 188                                 switch (index) {
 189
 190                                 case 0:
 191                                         return dateFormat.format(node
 192                                                         .getProperty(Property.JCR_LAST_MODIFIED).getDate()
 193                                                         .getTime());
 194                                 case 1:
 195                                         return "local";
 196                                 case 2:
 197                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 198                                 case 3:
 199                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 200                                 }
 201                                 return getText(obj);
 202                         } catch (RepositoryException e) {
 203                                 throw new SlcException("Cannot get column text", e);
 204                         }
 205                 }
 206
 207         }
 208
 209         class ViewDoubleClickListener implements IDoubleClickListener {
 210                 public void doubleClick(DoubleClickEvent evt) {
 211                         Object obj = ((IStructuredSelection) evt.getSelection())
 212                                         .getFirstElement();
 213                         try {
 214                                 if (obj instanceof Node) {
 215                                         Node node = (Node) obj;
 216                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 217                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 218                                                                 .getActiveWorkbenchWindow().getActivePage();
 219                                                 activePage.openEditor(
 220                                                                 new ProcessEditorInput(node.getPath()),
 221                                                                 ProcessEditor.ID);
 222                                         }
 223                                 }
 224                         } catch (Exception e) {
 225                                 throw new SlcException("Cannot open " + obj, e);
 226                         }
 227                 }
 228
 229         }
 230
 231         public void setSession(Session session) {
 232                 this.session = session;
 233         }
 234
 235 }