cms/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/views/JcrExecutionModulesView.java

   1 package org.argeo.slc.client.ui.views;
   2
   3 import java.util.ArrayList;
   4 import java.util.Arrays;
   5 import java.util.Comparator;
   6 import java.util.Iterator;
   7 import java.util.List;
   8 import java.util.SortedSet;
   9 import java.util.TreeSet;
  10
  11 import javax.jcr.Node;
  12 import javax.jcr.NodeIterator;
  13 import javax.jcr.Property;
  14 import javax.jcr.Repository;
  15 import javax.jcr.RepositoryException;
  16 import javax.jcr.Session;
  17 import javax.jcr.nodetype.NodeType;
  18 import javax.jcr.observation.Event;
  19 import javax.jcr.query.Query;
  20 import javax.jcr.query.QueryManager;
  21
  22 import org.apache.commons.logging.Log;
  23 import org.apache.commons.logging.LogFactory;
  24 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  25 import org.argeo.eclipse.ui.jcr.DefaultNodeLabelProvider;
  26 import org.argeo.eclipse.ui.jcr.NodeElementComparer;
  27 import org.argeo.eclipse.ui.jcr.SimpleNodeContentProvider;
  28 import org.argeo.eclipse.ui.specific.EclipseUiSpecificUtils;
  29 import org.argeo.jcr.JcrUtils;
  30 import org.argeo.slc.SlcException;
  31 import org.argeo.slc.SlcNames;
  32 import org.argeo.slc.SlcTypes;
  33 import org.argeo.slc.client.ui.ClientUiPlugin;
  34 import org.argeo.slc.client.ui.SlcImages;
  35 import org.argeo.slc.client.ui.editors.ProcessEditor;
  36 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  37 import org.argeo.slc.execution.ExecutionModulesManager;
  38 import org.argeo.slc.jcr.SlcJcrConstants;
  39 import org.eclipse.jface.viewers.DoubleClickEvent;
  40 import org.eclipse.jface.viewers.IDoubleClickListener;
  41 import org.eclipse.jface.viewers.IStructuredSelection;
  42 import org.eclipse.jface.viewers.ITableLabelProvider;
  43 import org.eclipse.jface.viewers.TreeViewer;
  44 import org.eclipse.rap.rwt.service.ServerPushSession;
  45 import org.eclipse.swt.SWT;
  46 import org.eclipse.swt.dnd.DND;
  47 import org.eclipse.swt.dnd.DragSourceAdapter;
  48 import org.eclipse.swt.dnd.DragSourceEvent;
  49 import org.eclipse.swt.dnd.TextTransfer;
  50 import org.eclipse.swt.dnd.Transfer;
  51 import org.eclipse.swt.graphics.Image;
  52 import org.eclipse.swt.widgets.Composite;
  53 import org.eclipse.swt.widgets.Display;
  54 import org.eclipse.ui.IWorkbenchPage;
  55 import org.eclipse.ui.PlatformUI;
  56 import org.eclipse.ui.part.ViewPart;
  57
  58 /** JCR based view of the execution modules. */
  59 public class JcrExecutionModulesView extends ViewPart implements SlcTypes, SlcNames {
  60         private final static Log log = LogFactory.getLog(JcrExecutionModulesView.class);
  61
  62         public static final String ID = ClientUiPlugin.ID + ".jcrExecutionModulesView";
  63
  64         private TreeViewer viewer;
  65
  66         private ServerPushSession pushSession;
  67
  68         /* DEPENDENCY INJECTION */
  69         private Repository repository;
  70         private Session session;
  71         private ExecutionModulesManager modulesManager;
  72
  73         public void createPartControl(Composite parent) {
  74                 pushSession = new ServerPushSession();
  75                 pushSession.start();
  76
  77                 try {
  78                         session = repository.login();
  79                 } catch (RepositoryException e1) {
  80                         throw new SlcException("Cannot log in to repository");
  81                 }
  82
  83                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  84                 EclipseUiSpecificUtils.enableToolTipSupport(viewer);
  85                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  86                 viewer.setContentProvider(contentProvider);
  87                 viewer.setComparer(new NodeElementComparer());
  88                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  89                 viewer.setLabelProvider(viewLabelProvider);
  90                 viewer.setInput(getViewSite());
  91                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  92                 // context menu
  93                 // addContextMenu(viewer);
  94
  95                 getViewSite().setSelectionProvider(viewer);
  96
  97                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
  98                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
  99                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
 100                 viewer.addDragSupport(operations, tt, new ViewDragListener());
 101
 102                 try {
 103                         String[] nodeTypes = { SlcTypes.SLC_AGENT, SlcTypes.SLC_AGENT_FACTORY, SlcTypes.SLC_EXECUTION_MODULE };
 104                         session.getWorkspace().getObservationManager().addEventListener(
 105                                         new VmAgentObserver(viewer.getTree().getDisplay()),
 106                                         Event.NODE_ADDED | Event.NODE_REMOVED | Event.NODE_MOVED, SlcJcrConstants.VM_AGENT_FACTORY_PATH,
 107                                         true, null, nodeTypes, false);
 108                 } catch (RepositoryException e) {
 109                         throw new SlcException("Cannot add observer", e);
 110                 }
 111         }
 112
 113         public void setFocus() {
 114                 viewer.getControl().setFocus();
 115         }
 116
 117         public TreeViewer getViewer() {
 118                 return viewer;
 119         }
 120
 121         public void refreshView() {
 122                 viewer.setInput(getViewSite());
 123         }
 124
 125         // Controllers
 126         class ViewContentProvider extends SimpleNodeContentProvider {
 127                 private static final long serialVersionUID = 5117887833174813672L;
 128
 129                 public ViewContentProvider(Session session) {
 130                         super(session, new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 131                 }
 132
 133                 @Override
 134                 protected Object[] sort(Object parent, Object[] children) {
 135                         Object[] sorted = new Object[children.length];
 136                         System.arraycopy(children, 0, sorted, 0, children.length);
 137                         Arrays.sort(sorted, new ViewComparator());
 138                         return sorted;
 139                 }
 140
 141                 @Override
 142                 protected List<Node> filterChildren(List<Node> children) throws RepositoryException {
 143                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 144                                 Node node = it.next();
 145                                 // execution spec definitions
 146                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 147                                         it.remove();
 148                                 // flow values
 149                                 else if (node.getParent().isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 150                                         it.remove();
 151                         }
 152                         return super.filterChildren(children);
 153                 }
 154
 155                 @Override
 156                 public boolean hasChildren(Object element) {
 157                         if (element instanceof Node) {
 158                                 Node node = (Node) element;
 159                                 try {
 160                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 161                                                 return false;
 162                                 } catch (RepositoryException e) {
 163                                         throw new SlcException("Cannot check has children", e);
 164                                 }
 165                         }
 166                         return super.hasChildren(element);
 167                 }
 168         }
 169
 170         static class ViewComparator implements Comparator<Object> {
 171
 172                 public int compare(Object o1, Object o2) {
 173                         try {
 174                                 if (o1 instanceof Node && o2 instanceof Node) {
 175                                         Node node1 = (Node) o1;
 176                                         Node node2 = (Node) o2;
 177
 178                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 179                                                 return -100;
 180                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 181                                                 return 100;
 182
 183                                         if (node1.isNodeType(SLC_EXECUTION_FLOW) && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 184                                                 return node1.getName().compareTo(node2.getName());
 185                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW) && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 186                                                 return 1;
 187                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW) && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 188                                                 return -1;
 189                                         } else {
 190                                                 // TODO: check title
 191                                                 return node1.getName().compareTo(node2.getName());
 192                                         }
 193                                 }
 194                         } catch (RepositoryException e) {
 195                                 throw new SlcException("Cannot compare " + o1 + " and " + o2, e);
 196                         }
 197                         return 0;
 198                 }
 199
 200         }
 201
 202         // private void addContextMenu(TreeViewer flowsViewer) {
 203         //
 204         // final MenuManager menuMgr = new MenuManager();
 205         // menuMgr.setRemoveAllWhenShown(true);
 206         // menuMgr.addMenuListener(new IMenuListener() {
 207         //
 208         // public void menuAboutToShow(IMenuManager manager) {
 209         // menuMgr.add(new Action("Test") {
 210         // public void run() {
 211         // log.debug("do something");
 212         // }
 213         // });
 214         // }
 215         // });
 216         // Menu menu = menuMgr.createContextMenu(flowsViewer.getControl());
 217         // flowsViewer.getTree().setMenu(menu);
 218         // getSite().registerContextMenu(menuMgr, flowsViewer);
 219         // }
 220
 221         class VmAgentObserver extends AsyncUiEventListener {
 222
 223                 public VmAgentObserver(Display display) {
 224                         super(display);
 225                 }
 226
 227                 protected void onEventInUiThread(List<Event> events) {
 228                         for (Event event : events) {
 229                                 try {
 230                                         String path = event.getPath();
 231
 232                                         if (session.itemExists(path)) {
 233                                                 Node parentNode = session.getNode(path);// .getParent();
 234                                                 if (log.isTraceEnabled())
 235                                                         log.trace("Refresh " + parentNode + " after event " + event);
 236                                                 viewer.refresh(parentNode);
 237                                         }
 238                                 } catch (RepositoryException e) {
 239                                         log.warn("Cannot process event " + event + ": " + e);
 240                                 }
 241                         }
 242
 243                         // TODO: optimize based on event
 244                         viewer.refresh();
 245                 }
 246         }
 247
 248         class ViewLabelProvider extends DefaultNodeLabelProvider implements ITableLabelProvider {
 249                 private static final long serialVersionUID = 2410754425574656399L;
 250
 251                 @Override
 252                 protected String getText(Node node) throws RepositoryException {
 253                         if (node.isNodeType(NodeType.MIX_TITLE) && node.hasProperty(Property.JCR_TITLE))
 254                                 return node.getProperty(Property.JCR_TITLE).getString();
 255                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 256                                 return "Execution Specifications";
 257                         else if (node.getPath().equals(SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 258                                 return "Internal Agents";
 259                         return super.getText(node);
 260                 }
 261
 262                 @Override
 263                 public Image getImage(Node node) throws RepositoryException {
 264                         // we try to optimize a bit by putting deeper nodes first
 265                         if (node.getParent().isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 266                                 return SlcImages.CHOICES;
 267                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 268                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 269                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 270                                 return SlcImages.EXECUTION_SPEC;
 271                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 272                                 return SlcImages.EXECUTION_SPECS;
 273                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 274                                 return SlcImages.FLOW;
 275                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 276                                 if (node.getProperty(SLC_STARTED).getBoolean())
 277                                         return SlcImages.MODULE;
 278                                 else
 279                                         return SlcImages.MODULE_STOPPED;
 280                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 281                                 return SlcImages.AGENT;
 282                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 283                                 return SlcImages.AGENT_FACTORY;
 284                         else
 285                                 return SlcImages.FOLDER;
 286                 }
 287
 288                 public String getToolTipText(Node node) throws RepositoryException {
 289                         if (node.isNodeType(NodeType.MIX_TITLE) && node.hasProperty(Property.JCR_DESCRIPTION))
 290                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 291                         return super.getToolTipText(node);
 292                 }
 293
 294                 public String getColumnText(Object obj, int index) {
 295                         return getText(obj);
 296                 }
 297
 298                 public Image getColumnImage(Object obj, int index) {
 299                         return getImage(obj);
 300                 }
 301
 302         }
 303
 304         class ViewDoubleClickListener implements IDoubleClickListener {
 305                 public void doubleClick(DoubleClickEvent evt) {
 306                         Object obj = ((IStructuredSelection) evt.getSelection()).getFirstElement();
 307                         try {
 308                                 if (obj instanceof Node) {
 309                                         Node node = (Node) obj;
 310                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 311                                                 ClientUiPlugin.startStopExecutionModule(modulesManager, node);
 312                                         } else {
 313                                                 String path = node.getPath();
 314                                                 // TODO factorize with editor
 315                                                 QueryManager qm = node.getSession().getWorkspace().getQueryManager();
 316                                                 String statement = "SELECT * FROM [" + SlcTypes.SLC_EXECUTION_FLOW
 317                                                                 + "] WHERE ISDESCENDANTNODE(['" + path + "']) OR ISSAMENODE(['" + path + "'])";
 318                                                 // log.debug(statement);
 319                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 320
 321                                                 // order paths
 322                                                 SortedSet<String> paths = new TreeSet<String>();
 323                                                 for (NodeIterator nit = query.execute().getNodes(); nit.hasNext();) {
 324                                                         paths.add(nit.nextNode().getPath());
 325                                                 }
 326
 327                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
 328                                                                 .getActivePage();
 329                                                 activePage.openEditor(new ProcessEditorInput(new ArrayList<String>(paths), true),
 330                                                                 ProcessEditor.ID);
 331                                         }
 332                                 }
 333                         } catch (Exception e) {
 334                                 throw new SlcException("Cannot open " + obj, e);
 335                         }
 336                 }
 337
 338         }
 339
 340         /** Listen to drags */
 341         class ViewDragListener extends DragSourceAdapter {
 342                 private static final long serialVersionUID = 250270504802674171L;
 343
 344                 // Check if the drag action should start.
 345                 public void dragStart(DragSourceEvent event) {
 346                         // we only start drag if at least one of the selected elements is
 347                         // valid
 348                         boolean doIt = false;
 349                         IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
 350                         @SuppressWarnings("rawtypes")
 351                         Iterator it = selection.iterator();
 352                         try {
 353                                 while (it.hasNext()) {
 354                                         Object obj = it.next();
 355                                         if (obj instanceof Node) {
 356                                                 Node node = (Node) obj;
 357                                                 if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW)
 358                                                                 || node.isNodeType(SlcTypes.SLC_EXECUTION_MODULE)) {
 359                                                         doIt = true;
 360                                                 }
 361                                         }
 362                                 }
 363                         } catch (RepositoryException e) {
 364                                 throw new SlcException("Cannot read node to set drag data", e);
 365                         }
 366                         event.doit = doIt;
 367                 }
 368
 369                 public void dragSetData(DragSourceEvent event) {
 370                         IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
 371                         StringBuilder buf = new StringBuilder();
 372                         @SuppressWarnings("rawtypes")
 373                         Iterator it = selection.iterator();
 374                         try {
 375
 376                                 while (it.hasNext()) {
 377                                         Object obj = it.next();
 378
 379                                         if (obj instanceof Node) {
 380                                                 Node node = (Node) obj;
 381                                                 if ((node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW)
 382                                                                 || node.isNodeType(SlcTypes.SLC_EXECUTION_MODULE))
 383                                                                 && TextTransfer.getInstance().isSupportedType(event.dataType)) {
 384                                                         buf.append(node.getPath()).append('\n');
 385                                                 }
 386                                         }
 387                                 }
 388                         } catch (RepositoryException e) {
 389                                 throw new SlcException("Cannot read node to set drag data", e);
 390                         }
 391
 392                         if (buf.length() > 0) {
 393                                 if (buf.charAt(buf.length() - 1) == '\n')
 394                                         buf.deleteCharAt(buf.length() - 1);
 395                                 event.data = buf.toString();
 396                                 log.debug("data set to : " + buf.toString());
 397                         }
 398                 }
 399         }
 400
 401         public void dispose() {
 402                 JcrUtils.logoutQuietly(session);
 403                 if (pushSession != null)
 404                         pushSession.stop();
 405                 super.dispose();
 406         }
 407
 408         // DEPENDENCY INJECTION
 409
 410         public void setModulesManager(ExecutionModulesManager modulesManager) {
 411                 this.modulesManager = modulesManager;
 412         }
 413
 414         public void setRepository(Repository repository) {
 415                 this.repository = repository;
 416         }
 417 }