eclipse/plugins/org.argeo.slc.client.ui/src/main/java/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.RepositoryException;
  15 import javax.jcr.Session;
  16 import javax.jcr.nodetype.NodeType;
  17 import javax.jcr.observation.Event;
  18 import javax.jcr.query.Query;
  19 import javax.jcr.query.QueryManager;
  20
  21 import org.apache.commons.logging.Log;
  22 import org.apache.commons.logging.LogFactory;
  23 import org.argeo.ArgeoException;
  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.slc.BasicNameVersion;
  29 import org.argeo.slc.NameVersion;
  30 import org.argeo.slc.SlcException;
  31 import org.argeo.slc.client.ui.SlcImages;
  32 import org.argeo.slc.client.ui.editors.ProcessEditor;
  33 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  34 import org.argeo.slc.execution.ExecutionModulesManager;
  35 import org.argeo.slc.jcr.SlcJcrConstants;
  36 import org.argeo.slc.jcr.SlcNames;
  37 import org.argeo.slc.jcr.SlcTypes;
  38 import org.eclipse.core.runtime.IProgressMonitor;
  39 import org.eclipse.core.runtime.IStatus;
  40 import org.eclipse.core.runtime.Status;
  41 import org.eclipse.core.runtime.jobs.Job;
  42 import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
  43 import org.eclipse.jface.viewers.DoubleClickEvent;
  44 import org.eclipse.jface.viewers.IDoubleClickListener;
  45 import org.eclipse.jface.viewers.IStructuredSelection;
  46 import org.eclipse.jface.viewers.ITableLabelProvider;
  47 import org.eclipse.jface.viewers.TreeViewer;
  48 import org.eclipse.swt.SWT;
  49 import org.eclipse.swt.dnd.DND;
  50 import org.eclipse.swt.dnd.DragSourceAdapter;
  51 import org.eclipse.swt.dnd.DragSourceEvent;
  52 import org.eclipse.swt.dnd.TextTransfer;
  53 import org.eclipse.swt.dnd.Transfer;
  54 import org.eclipse.swt.graphics.Image;
  55 import org.eclipse.swt.widgets.Composite;
  56 import org.eclipse.swt.widgets.Display;
  57 import org.eclipse.ui.IWorkbenchPage;
  58 import org.eclipse.ui.PlatformUI;
  59 import org.eclipse.ui.part.ViewPart;
  60
  61 /** JCR based view of the execution modules. */
  62 public class JcrExecutionModulesView extends ViewPart implements SlcTypes,
  63                 SlcNames {
  64         private final static Log log = LogFactory
  65                         .getLog(JcrExecutionModulesView.class);
  66
  67         public static final String ID = "org.argeo.slc.client.ui.jcrExecutionModulesView";
  68
  69         private TreeViewer viewer;
  70
  71         private Session session;
  72
  73         private ExecutionModulesManager modulesManager;
  74
  75         public void createPartControl(Composite parent) {
  76                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  77
  78                 // FIXME : does not work in RAP, find a way to have it for RCP only
  79                 // ColumnViewerToolTipSupport.enableFor(viewer);
  80
  81                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  82
  83                 viewer.setContentProvider(contentProvider);
  84                 viewer.setComparer(new NodeElementComparer());
  85                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  86                 viewer.setLabelProvider(viewLabelProvider);
  87                 ColumnViewerToolTipSupport.enableFor(viewer);
  88                 viewer.setInput(getViewSite());
  89                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  90                 getViewSite().setSelectionProvider(viewer);
  91
  92                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
  93                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
  94                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
  95                 viewer.addDragSupport(operations, tt, new ViewDragListener());
  96
  97                 try {
  98                         String[] nodeTypes = { SlcTypes.SLC_AGENT,
  99                                         SlcTypes.SLC_AGENT_FACTORY, SlcTypes.SLC_EXECUTION_MODULE };
 100                         session.getWorkspace()
 101                                         .getObservationManager()
 102                                         .addEventListener(
 103                                                         new VmAgentObserver(viewer.getTree().getDisplay()),
 104                                                         Event.NODE_ADDED | Event.NODE_REMOVED
 105                                                                         | Event.NODE_MOVED,
 106                                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH, true, null,
 107                                                         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         class ViewContentProvider extends SimpleNodeContentProvider {
 126
 127                 public ViewContentProvider(Session session) {
 128                         super(session,
 129                                         new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 130                 }
 131
 132                 // @Override
 133                 // protected Object[] getChildren(Node node) throws RepositoryException
 134                 // {
 135                 // if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY)) {
 136                 // List<AgentNodesWrapper> wrappers = new
 137                 // ArrayList<AgentNodesWrapper>();
 138                 // for (NodeIterator nit = node.getNodes(); nit.hasNext();) {
 139                 // wrappers.add(new AgentNodesWrapper(nit.nextNode()));
 140                 // }
 141                 // return wrappers.toArray();
 142                 // }
 143                 // return super.getChildren(node);
 144                 // }
 145
 146                 @Override
 147                 protected Object[] sort(Object parent, Object[] children) {
 148                         Object[] sorted = new Object[children.length];
 149                         System.arraycopy(children, 0, sorted, 0, children.length);
 150                         Arrays.sort(sorted, new ViewComparator());
 151                         return sorted;
 152                 }
 153
 154                 @Override
 155                 protected List<Node> filterChildren(List<Node> children)
 156                                 throws RepositoryException {
 157                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 158                                 Node node = it.next();
 159                                 // execution spec definitions
 160                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 161                                         it.remove();
 162                                 // flow values
 163                                 else if (node.getParent().isNodeType(
 164                                                 SlcTypes.SLC_EXECUTION_FLOW))
 165                                         it.remove();
 166                         }
 167                         return super.filterChildren(children);
 168                 }
 169
 170                 @Override
 171                 public boolean hasChildren(Object element) {
 172                         if (element instanceof Node) {
 173                                 Node node = (Node) element;
 174                                 try {
 175                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 176                                                 return false;
 177                                 } catch (RepositoryException e) {
 178                                         throw new SlcException("Cannot check has children", e);
 179                                 }
 180                         }
 181                         return super.hasChildren(element);
 182                 }
 183         }
 184
 185         static class ViewComparator implements Comparator<Object> {
 186
 187                 public int compare(Object o1, Object o2) {
 188                         try {
 189                                 if (o1 instanceof Node && o2 instanceof Node) {
 190                                         Node node1 = (Node) o1;
 191                                         Node node2 = (Node) o2;
 192
 193                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 194                                                 return -100;
 195                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 196                                                 return 100;
 197
 198                                         if (node1.isNodeType(SLC_EXECUTION_FLOW)
 199                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 200                                                 return node1.getName().compareTo(node2.getName());
 201                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW)
 202                                                         && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 203                                                 return 1;
 204                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW)
 205                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 206                                                 return -1;
 207                                         } else {
 208                                                 // TODO: check title
 209                                                 return node1.getName().compareTo(node2.getName());
 210                                         }
 211                                 }
 212                         } catch (RepositoryException e) {
 213                                 throw new ArgeoException("Cannot compare " + o1 + " and " + o2,
 214                                                 e);
 215                         }
 216                         return 0;
 217                 }
 218
 219         }
 220
 221         // /** Wraps the execution modules of an agent. */
 222         // static class AgentNodesWrapper extends NodesWrapper {
 223         //
 224         // public AgentNodesWrapper(Node node) {
 225         // super(node);
 226         // }
 227         //
 228         // protected List<WrappedNode> getWrappedNodes()
 229         // throws RepositoryException {
 230         // List<WrappedNode> children = new ArrayList<WrappedNode>();
 231         // Node executionModules = getNode();
 232         // for (NodeIterator nit = executionModules.getNodes(); nit.hasNext();) {
 233         // for (NodeIterator nitVersions = nit.nextNode().getNodes(); nitVersions
 234         // .hasNext();) {
 235         // children.add(new WrappedNode(this, nitVersions.nextNode()));
 236         // }
 237         // }
 238         // return children;
 239         // }
 240         //
 241         // }
 242
 243         class VmAgentObserver extends AsyncUiEventListener {
 244
 245                 public VmAgentObserver(Display display) {
 246                         super(display);
 247                 }
 248
 249                 protected void onEventInUiThread(List<Event> events) {
 250                         for (Event event : events) {
 251                                 try {
 252                                         String path = event.getPath();
 253
 254                                         if (session.itemExists(path)) {
 255                                                 Node parentNode = session.getNode(path);// .getParent();
 256                                                 if (log.isDebugEnabled())
 257                                                         log.debug("Refresh " + parentNode + " after event "
 258                                                                         + event);
 259                                                 viewer.refresh(parentNode);
 260                                         }
 261                                 } catch (RepositoryException e) {
 262                                         log.warn("Cannot process event " + event + ": " + e);
 263                                 }
 264                         }
 265
 266                         // try {
 267                         // Node vmAgentNode = session
 268                         // .getNode(SlcJcrConstants.VM_AGENT_FACTORY_PATH);
 269                         // viewer.refresh(vmAgentNode);
 270                         // } catch (RepositoryException e) {
 271                         // log.warn("Cannot process event : " + e);
 272                         // }
 273                         // TODO: optimize based on event
 274                         viewer.refresh();
 275                 }
 276         }
 277
 278         class ViewLabelProvider extends DefaultNodeLabelProvider implements
 279                         ITableLabelProvider {
 280
 281                 @Override
 282                 protected String getText(Node node) throws RepositoryException {
 283                         if (node.isNodeType(NodeType.MIX_TITLE)
 284                                         && node.hasProperty(Property.JCR_TITLE))
 285                                 return node.getProperty(Property.JCR_TITLE).getString();
 286                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 287                                 return "Execution Specifications";
 288                         else if (node.getPath().equals(
 289                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 290                                 return "Internal Agents";
 291                         return super.getText(node);
 292                 }
 293
 294                 @Override
 295                 public Image getImage(Node node) throws RepositoryException {
 296                         // we try to optimize a bit by putting deeper nodes first
 297                         if (node.getParent().isNodeType(
 298                                         SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 299                                 return SlcImages.CHOICES;
 300                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 301                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 302                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 303                                 return SlcImages.EXECUTION_SPEC;
 304                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 305                                 return SlcImages.EXECUTION_SPECS;
 306                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 307                                 return SlcImages.FLOW;
 308                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 309                                 if (node.getProperty(SLC_STARTED).getBoolean())
 310                                         return SlcImages.MODULE;
 311                                 else
 312                                         return SlcImages.MODULE_STOPPED;
 313                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 314                                 return SlcImages.AGENT;
 315                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 316                                 return SlcImages.AGENT_FACTORY;
 317                         else
 318                                 return SlcImages.FOLDER;
 319                 }
 320
 321                 public String getToolTipText(Node node) throws RepositoryException {
 322                         if (node.isNodeType(NodeType.MIX_TITLE)
 323                                         && node.hasProperty(Property.JCR_DESCRIPTION))
 324                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 325                         return super.getToolTipText(node);
 326                 }
 327
 328                 public String getColumnText(Object obj, int index) {
 329                         return getText(obj);
 330                 }
 331
 332                 public Image getColumnImage(Object obj, int index) {
 333                         return getImage(obj);
 334                 }
 335
 336         }
 337
 338         class ViewDoubleClickListener implements IDoubleClickListener {
 339                 public void doubleClick(DoubleClickEvent evt) {
 340                         Object obj = ((IStructuredSelection) evt.getSelection())
 341                                         .getFirstElement();
 342                         try {
 343                                 if (obj instanceof Node) {
 344                                         Node node = (Node) obj;
 345                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 346                                                 String name = node.getProperty(SLC_NAME).getString();
 347                                                 String version = node.getProperty(SLC_VERSION)
 348                                                                 .getString();
 349                                                 final NameVersion nameVersion = new BasicNameVersion(
 350                                                                 name, version);
 351                                                 Boolean started = node.getProperty(SLC_STARTED)
 352                                                                 .getBoolean();
 353
 354                                                 Job job;
 355                                                 if (started) {
 356                                                         job = new Job("Stop " + nameVersion) {
 357                                                                 protected IStatus run(IProgressMonitor monitor) {
 358                                                                         monitor.beginTask("Stop " + nameVersion, 1);
 359                                                                         modulesManager.stop(nameVersion);
 360                                                                         monitor.worked(1);
 361                                                                         return Status.OK_STATUS;
 362                                                                 }
 363                                                         };
 364                                                 } else {
 365                                                         job = new Job("Start " + nameVersion) {
 366                                                                 protected IStatus run(IProgressMonitor monitor) {
 367                                                                         monitor.beginTask("Start " + nameVersion, 1);
 368                                                                         modulesManager.start(nameVersion);
 369                                                                         monitor.worked(1);
 370                                                                         return Status.OK_STATUS;
 371                                                                 }
 372                                                         };
 373                                                 }
 374                                                 job.setUser(true);
 375                                                 job.schedule();
 376                                         } else {
 377                                                 String path = node.getPath();
 378                                                 // TODO factorize with editor
 379                                                 QueryManager qm = node.getSession().getWorkspace()
 380                                                                 .getQueryManager();
 381                                                 String statement = "SELECT * FROM ["
 382                                                                 + SlcTypes.SLC_EXECUTION_FLOW
 383                                                                 + "] WHERE ISDESCENDANTNODE(['" + path
 384                                                                 + "']) OR ISSAMENODE(['" + path + "'])";
 385                                                 // log.debug(statement);
 386                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 387
 388                                                 // order paths
 389                                                 SortedSet<String> paths = new TreeSet<String>();
 390                                                 for (NodeIterator nit = query.execute().getNodes(); nit
 391                                                                 .hasNext();) {
 392                                                         paths.add(nit.nextNode().getPath());
 393                                                 }
 394
 395                                                 // List<String> paths = new ArrayList<String>();
 396                                                 // paths.add(node.getPath());
 397                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 398                                                                 .getActiveWorkbenchWindow().getActivePage();
 399                                                 activePage.openEditor(new ProcessEditorInput(
 400                                                                 new ArrayList<String>(paths), true),
 401                                                                 ProcessEditor.ID);
 402                                         }
 403                                 }
 404                         } catch (Exception e) {
 405                                 throw new SlcException("Cannot open " + obj, e);
 406                         }
 407                 }
 408
 409         }
 410
 411         class ViewDragListener extends DragSourceAdapter {
 412                 public void dragSetData(DragSourceEvent event) {
 413                         IStructuredSelection selection = (IStructuredSelection) viewer
 414                                         .getSelection();
 415                         if (selection.getFirstElement() instanceof Node) {
 416                                 Node node = (Node) selection.getFirstElement();
 417                                 // try {
 418                                 // if (node.isNodeType(SLC_EXECUTION_FLOW)) {
 419                                 // if (EditorInputTransfer.getInstance().isSupportedType(
 420                                 // event.dataType)) {
 421                                 // ProcessEditorInput pei = new ProcessEditorInput(
 422                                 // node.getPath());
 423                                 // EditorInputData eid = EditorInputTransfer
 424                                 // .createEditorInputData(ProcessEditor.ID,
 425                                 // pei);
 426                                 // event.data = new EditorInputTransfer.EditorInputData[] { eid
 427                                 // };
 428                                 //
 429                                 // }
 430                                 // }
 431                                 // } catch (RepositoryException e1) {
 432                                 // throw new SlcException("Cannot drag " + node, e1);
 433                                 // }
 434
 435                                 if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
 436                                         try {
 437                                                 event.data = node.getPath();
 438                                         } catch (RepositoryException e1) {
 439                                                 // TODO Auto-generated catch block
 440                                                 e1.printStackTrace();
 441                                         }
 442                                 }
 443                         }
 444                 }
 445         }
 446
 447         public void setSession(Session session) {
 448                 this.session = session;
 449         }
 450
 451         public void setModulesManager(ExecutionModulesManager modulesManager) {
 452                 this.modulesManager = modulesManager;
 453         }
 454
 455 }