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.util.ArrayList;
   4 import java.util.List;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.NodeIterator;
   8 import javax.jcr.Property;
   9 import javax.jcr.RepositoryException;
  10 import javax.jcr.Session;
  11 import javax.jcr.observation.Event;
  12 import javax.jcr.observation.EventIterator;
  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.jcr.JcrUtils;
  19 import org.argeo.slc.SlcException;
  20 import org.argeo.slc.client.ui.editors.ProcessEditor;
  21 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  22 import org.argeo.slc.jcr.SlcJcrConstants;
  23 import org.argeo.slc.jcr.SlcNames;
  24 import org.argeo.slc.jcr.SlcTypes;
  25 import org.eclipse.jface.viewers.ColumnLabelProvider;
  26 import org.eclipse.jface.viewers.DoubleClickEvent;
  27 import org.eclipse.jface.viewers.IDoubleClickListener;
  28 import org.eclipse.jface.viewers.IStructuredContentProvider;
  29 import org.eclipse.jface.viewers.IStructuredSelection;
  30 import org.eclipse.jface.viewers.ITableLabelProvider;
  31 import org.eclipse.jface.viewers.TableViewer;
  32 import org.eclipse.jface.viewers.Viewer;
  33 import org.eclipse.swt.SWT;
  34 import org.eclipse.swt.graphics.Image;
  35 import org.eclipse.swt.widgets.Composite;
  36 import org.eclipse.swt.widgets.Table;
  37 import org.eclipse.swt.widgets.TableColumn;
  38 import org.eclipse.ui.IWorkbenchPage;
  39 import org.eclipse.ui.PlatformUI;
  40 import org.eclipse.ui.part.ViewPart;
  41
  42 /**
  43  * This class display the list of all processes that have run in the
  44  * corresponding agent. Currently, the local agent.
  45  */
  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         public void createPartControl(Composite parent) {
  56                 Table table = createTable(parent);
  57                 viewer = new TableViewer(table);
  58                 viewer.setLabelProvider(new LabelProvider());
  59                 viewer.setContentProvider(new ContentProvider());
  60                 viewer.setInput(getViewSite());
  61                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  62
  63                 processesObserver = new AsyncUiEventListener() {
  64                         protected void onEventInUiThread(EventIterator events) {
  65                                 viewer.refresh();
  66                         }
  67                 };
  68                 try {
  69                         ObservationManager observationManager = session.getWorkspace()
  70                                         .getObservationManager();
  71                         observationManager.addEventListener(processesObserver,
  72                                         Event.NODE_ADDED | Event.NODE_REMOVED
  73                                                         | Event.PROPERTY_CHANGED,
  74                                         SlcJcrConstants.PROCESSES_BASE_PATH, true, null, null,
  75                                         false);
  76                 } catch (RepositoryException e) {
  77                         throw new SlcException("Cannot register listeners", e);
  78                 }
  79
  80         }
  81
  82         protected Table createTable(Composite parent) {
  83                 int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL
  84                                 | SWT.FULL_SELECTION;
  85                 // does not function with RAP, commented for the time being
  86                 // | SWT.HIDE_SELECTION;
  87
  88                 Table table = new Table(parent, style);
  89
  90                 table.setLinesVisible(true);
  91                 table.setHeaderVisible(true);
  92
  93                 TableColumn column = new TableColumn(table, SWT.LEFT, 0);
  94                 column.setText("Date");
  95                 column.setWidth(200);
  96
  97                 column = new TableColumn(table, SWT.LEFT, 1);
  98                 column.setText("Host");
  99                 column.setWidth(100);
 100
 101                 column = new TableColumn(table, SWT.LEFT, 2);
 102                 column.setText("Id");
 103                 column.setWidth(300);
 104
 105                 column = new TableColumn(table, SWT.LEFT, 3);
 106                 column.setText("Status");
 107                 column.setWidth(100);
 108
 109                 return table;
 110         }
 111
 112         public void setFocus() {
 113                 viewer.getControl().setFocus();
 114         }
 115
 116         @Override
 117         public void dispose() {
 118                 JcrUtils.unregisterQuietly(session.getWorkspace(), processesObserver);
 119                 super.dispose();
 120         }
 121
 122         class ContentProvider implements IStructuredContentProvider {
 123
 124                 public Object[] getElements(Object inputElement) {
 125                         try {
 126                                 // TODO filter, optimize with virtual table, ...
 127                                 String sql = "SELECT * from [slc:process] ORDER BY [jcr:lastModified] DESC";
 128                                 Query query = session.getWorkspace().getQueryManager()
 129                                                 .createQuery(sql, Query.JCR_SQL2);
 130                                 List<Node> nodes = new ArrayList<Node>();
 131                                 for (NodeIterator nit = query.execute().getNodes(); nit
 132                                                 .hasNext();) {
 133                                         nodes.add(nit.nextNode());
 134                                 }
 135                                 return nodes.toArray();
 136                         } catch (RepositoryException e) {
 137                                 throw new SlcException("Cannot retrieve processes", e);
 138                         }
 139                 }
 140
 141                 public void dispose() {
 142                 }
 143
 144                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 145                 }
 146
 147         }
 148
 149         class LabelProvider extends ColumnLabelProvider implements
 150                         ITableLabelProvider {
 151
 152                 public Image getColumnImage(Object element, int columnIndex) {
 153                         // TODO Auto-generated method stub
 154                         return null;
 155                 }
 156
 157                 public String getColumnText(Object obj, int index) {
 158                         try {
 159                                 Node node = (Node) obj;
 160                                 switch (index) {
 161
 162                                 case 0:
 163                                         return node.getProperty(Property.JCR_CREATED).getString();
 164                                 case 1:
 165                                         return "local";
 166                                 case 2:
 167                                         return node.getProperty(SlcNames.SLC_UUID).getString();
 168                                 case 3:
 169                                         return node.getProperty(SlcNames.SLC_STATUS).getString();
 170                                 }
 171                                 return getText(obj);
 172                         } catch (RepositoryException e) {
 173                                 throw new SlcException("Cannot get column text", e);
 174                         }
 175                 }
 176
 177         }
 178
 179         class ViewDoubleClickListener implements IDoubleClickListener {
 180                 public void doubleClick(DoubleClickEvent evt) {
 181                         Object obj = ((IStructuredSelection) evt.getSelection())
 182                                         .getFirstElement();
 183                         try {
 184                                 if (obj instanceof Node) {
 185                                         Node node = (Node) obj;
 186                                         if (node.isNodeType(SlcTypes.SLC_PROCESS)) {
 187                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 188                                                                 .getActiveWorkbenchWindow().getActivePage();
 189                                                 activePage.openEditor(
 190                                                                 new ProcessEditorInput(node.getPath()),
 191                                                                 ProcessEditor.ID);
 192                                         }
 193                                 }
 194                         } catch (Exception e) {
 195                                 throw new SlcException("Cannot open " + obj, e);
 196                         }
 197                 }
 198
 199         }
 200
 201         public void setSession(Session session) {
 202                 this.session = session;
 203         }
 204
 205 }