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.DoubleClickEvent;
  43 import org.eclipse.jface.viewers.IDoubleClickListener;
  44 import org.eclipse.jface.viewers.IStructuredSelection;
  45 import org.eclipse.jface.viewers.ITableLabelProvider;
  46 import org.eclipse.jface.viewers.TreeViewer;
  47 import org.eclipse.swt.SWT;
  48 import org.eclipse.swt.dnd.DND;
  49 import org.eclipse.swt.dnd.DragSourceAdapter;
  50 import org.eclipse.swt.dnd.DragSourceEvent;
  51 import org.eclipse.swt.dnd.TextTransfer;
  52 import org.eclipse.swt.dnd.Transfer;
  53 import org.eclipse.swt.graphics.Image;
  54 import org.eclipse.swt.widgets.Composite;
  55 import org.eclipse.swt.widgets.Display;
  56 import org.eclipse.ui.IWorkbenchPage;
  57 import org.eclipse.ui.PlatformUI;
  58 import org.eclipse.ui.part.ViewPart;
  59
  60 /** JCR based view of the execution modules. */
  61 public class JcrExecutionModulesView extends ViewPart implements SlcTypes,
  62                 SlcNames {
  63         private final static Log log = LogFactory
  64                         .getLog(JcrExecutionModulesView.class);
  65
  66         public static final String ID = "org.argeo.slc.client.ui.jcrExecutionModulesView";
  67
  68         private TreeViewer viewer;
  69
  70         private Session session;
  71
  72         private ExecutionModulesManager modulesManager;
  73
  74         public void createPartControl(Composite parent) {
  75                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  76
  77                 // FIXME : does not work in RAP, find a way to have it for RCP only
  78                 // ColumnViewerToolTipSupport.enableFor(viewer);
  79
  80                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  81
  82                 viewer.setContentProvider(contentProvider);
  83                 viewer.setComparer(new NodeElementComparer());
  84                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  85                 viewer.setLabelProvider(viewLabelProvider);
  86                 viewer.setInput(getViewSite());
  87                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  88                 getViewSite().setSelectionProvider(viewer);
  89
  90                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
  91                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
  92                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
  93                 viewer.addDragSupport(operations, tt, new ViewDragListener());
  94
  95                 try {
  96                         String[] nodeTypes = { SlcTypes.SLC_AGENT,
  97                                         SlcTypes.SLC_AGENT_FACTORY, SlcTypes.SLC_EXECUTION_MODULE };
  98                         session.getWorkspace()
  99                                         .getObservationManager()
 100                                         .addEventListener(
 101                                                         new VmAgentObserver(viewer.getTree().getDisplay()),
 102                                                         Event.NODE_ADDED | Event.NODE_REMOVED
 103                                                                         | Event.NODE_MOVED,
 104                                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH, true, null,
 105                                                         nodeTypes, false);
 106                 } catch (RepositoryException e) {
 107                         throw new SlcException("Cannot add observer", e);
 108                 }
 109         }
 110
 111         public void setFocus() {
 112                 viewer.getControl().setFocus();
 113         }
 114
 115         public TreeViewer getViewer() {
 116                 return viewer;
 117         }
 118
 119         public void refreshView() {
 120                 viewer.setInput(getViewSite());
 121         }
 122
 123         class ViewContentProvider extends SimpleNodeContentProvider {
 124
 125                 public ViewContentProvider(Session session) {
 126                         super(session,
 127                                         new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 128                 }
 129
 130                 // @Override
 131                 // protected Object[] getChildren(Node node) throws RepositoryException
 132                 // {
 133                 // if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY)) {
 134                 // List<AgentNodesWrapper> wrappers = new
 135                 // ArrayList<AgentNodesWrapper>();
 136                 // for (NodeIterator nit = node.getNodes(); nit.hasNext();) {
 137                 // wrappers.add(new AgentNodesWrapper(nit.nextNode()));
 138                 // }
 139                 // return wrappers.toArray();
 140                 // }
 141                 // return super.getChildren(node);
 142                 // }
 143
 144                 @Override
 145                 protected Object[] sort(Object parent, Object[] children) {
 146                         Object[] sorted = new Object[children.length];
 147                         System.arraycopy(children, 0, sorted, 0, children.length);
 148                         Arrays.sort(sorted, new ViewComparator());
 149                         return sorted;
 150                 }
 151
 152                 @Override
 153                 protected List<Node> filterChildren(List<Node> children)
 154                                 throws RepositoryException {
 155                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 156                                 Node node = it.next();
 157                                 // execution spec definitions
 158                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 159                                         it.remove();
 160                                 // flow values
 161                                 else if (node.getParent().isNodeType(
 162                                                 SlcTypes.SLC_EXECUTION_FLOW))
 163                                         it.remove();
 164                         }
 165                         return super.filterChildren(children);
 166                 }
 167
 168                 @Override
 169                 public boolean hasChildren(Object element) {
 170                         if (element instanceof Node) {
 171                                 Node node = (Node) element;
 172                                 try {
 173                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 174                                                 return false;
 175                                 } catch (RepositoryException e) {
 176                                         throw new SlcException("Cannot check has children", e);
 177                                 }
 178                         }
 179                         return super.hasChildren(element);
 180                 }
 181         }
 182
 183         static class ViewComparator implements Comparator<Object> {
 184
 185                 public int compare(Object o1, Object o2) {
 186                         try {
 187                                 if (o1 instanceof Node && o2 instanceof Node) {
 188                                         Node node1 = (Node) o1;
 189                                         Node node2 = (Node) o2;
 190
 191                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 192                                                 return -100;
 193                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 194                                                 return 100;
 195
 196                                         if (node1.isNodeType(SLC_EXECUTION_FLOW)
 197                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 198                                                 return node1.getName().compareTo(node2.getName());
 199                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW)
 200                                                         && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 201                                                 return 1;
 202                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW)
 203                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 204                                                 return -1;
 205                                         } else {
 206                                                 // TODO: check title
 207                                                 return node1.getName().compareTo(node2.getName());
 208                                         }
 209                                 }
 210                         } catch (RepositoryException e) {
 211                                 throw new ArgeoException("Cannot compare " + o1 + " and " + o2,
 212                                                 e);
 213                         }
 214                         return 0;
 215                 }
 216
 217         }
 218
 219         // /** Wraps the execution modules of an agent. */
 220         // static class AgentNodesWrapper extends NodesWrapper {
 221         //
 222         // public AgentNodesWrapper(Node node) {
 223         // super(node);
 224         // }
 225         //
 226         // protected List<WrappedNode> getWrappedNodes()
 227         // throws RepositoryException {
 228         // List<WrappedNode> children = new ArrayList<WrappedNode>();
 229         // Node executionModules = getNode();
 230         // for (NodeIterator nit = executionModules.getNodes(); nit.hasNext();) {
 231         // for (NodeIterator nitVersions = nit.nextNode().getNodes(); nitVersions
 232         // .hasNext();) {
 233         // children.add(new WrappedNode(this, nitVersions.nextNode()));
 234         // }
 235         // }
 236         // return children;
 237         // }
 238         //
 239         // }
 240
 241         class VmAgentObserver extends AsyncUiEventListener {
 242
 243                 public VmAgentObserver(Display display) {
 244                         super(display);
 245                 }
 246
 247                 protected void onEventInUiThread(List<Event> events) {
 248                         for (Event event : events) {
 249                                 try {
 250                                         String path = event.getPath();
 251
 252                                         if (session.itemExists(path)) {
 253                                                 Node parentNode = session.getNode(path);// .getParent();
 254                                                 if (log.isDebugEnabled())
 255                                                         log.debug("Refresh " + parentNode + " after event "
 256                                                                         + event);
 257                                                 viewer.refresh(parentNode);
 258                                         }
 259                                 } catch (RepositoryException e) {
 260                                         log.warn("Cannot process event " + event + ": " + e);
 261                                 }
 262                         }
 263
 264                         // try {
 265                         // Node vmAgentNode = session
 266                         // .getNode(SlcJcrConstants.VM_AGENT_FACTORY_PATH);
 267                         // viewer.refresh(vmAgentNode);
 268                         // } catch (RepositoryException e) {
 269                         // log.warn("Cannot process event : " + e);
 270                         // }
 271                         // TODO: optimize based on event
 272                         viewer.refresh();
 273                 }
 274         }
 275
 276         class ViewLabelProvider extends DefaultNodeLabelProvider implements
 277                         ITableLabelProvider {
 278
 279                 @Override
 280                 protected String getText(Node node) throws RepositoryException {
 281                         if (node.getName().equals(SLC_EXECUTION_SPECS))
 282                                 return "Execution Specifications";
 283                         else if (node.getPath().equals(
 284                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 285                                 return "Internal Agents";
 286                         return super.getText(node);
 287                 }
 288
 289                 @Override
 290                 public Image getImage(Node node) throws RepositoryException {
 291                         // we try to optimize a bit by putting deeper nodes first
 292                         if (node.getParent().isNodeType(
 293                                         SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 294                                 return SlcImages.CHOICES;
 295                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 296                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 297                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 298                                 return SlcImages.EXECUTION_SPEC;
 299                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 300                                 return SlcImages.EXECUTION_SPECS;
 301                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 302                                 return SlcImages.FLOW;
 303                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 304                                 if (node.getProperty(SLC_STARTED).getBoolean())
 305                                         return SlcImages.MODULE;
 306                                 else
 307                                         return SlcImages.MODULE_STOPPED;
 308                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 309                                 return SlcImages.AGENT;
 310                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 311                                 return SlcImages.AGENT_FACTORY;
 312                         else
 313                                 return SlcImages.FOLDER;
 314                 }
 315
 316                 public String getToolTipText(Node node) throws RepositoryException {
 317                         if (node.isNodeType(NodeType.MIX_TITLE)
 318                                         && node.hasProperty(Property.JCR_DESCRIPTION))
 319                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 320                         return super.getToolTipText(node);
 321                 }
 322
 323                 public String getColumnText(Object obj, int index) {
 324                         return getText(obj);
 325                 }
 326
 327                 public Image getColumnImage(Object obj, int index) {
 328                         return getImage(obj);
 329                 }
 330
 331         }
 332
 333         class ViewDoubleClickListener implements IDoubleClickListener {
 334                 public void doubleClick(DoubleClickEvent evt) {
 335                         Object obj = ((IStructuredSelection) evt.getSelection())
 336                                         .getFirstElement();
 337                         try {
 338                                 if (obj instanceof Node) {
 339                                         Node node = (Node) obj;
 340                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 341                                                 String name = node.getProperty(SLC_NAME).getString();
 342                                                 String version = node.getProperty(SLC_VERSION)
 343                                                                 .getString();
 344                                                 final NameVersion nameVersion = new BasicNameVersion(
 345                                                                 name, version);
 346                                                 Boolean started = node.getProperty(SLC_STARTED)
 347                                                                 .getBoolean();
 348
 349                                                 Job job;
 350                                                 if (started) {
 351                                                         job = new Job("Stop " + nameVersion) {
 352                                                                 protected IStatus run(IProgressMonitor monitor) {
 353                                                                         monitor.beginTask("Stop " + nameVersion, 1);
 354                                                                         modulesManager.stop(nameVersion);
 355                                                                         monitor.worked(1);
 356                                                                         return Status.OK_STATUS;
 357                                                                 }
 358                                                         };
 359                                                 } else {
 360                                                         job = new Job("Start " + nameVersion) {
 361                                                                 protected IStatus run(IProgressMonitor monitor) {
 362                                                                         monitor.beginTask("Start " + nameVersion, 1);
 363                                                                         modulesManager.start(nameVersion);
 364                                                                         monitor.worked(1);
 365                                                                         return Status.OK_STATUS;
 366                                                                 }
 367                                                         };
 368                                                 }
 369                                                 job.setUser(true);
 370                                                 job.schedule();
 371                                         } else {
 372                                                 String path = node.getPath();
 373                                                 // TODO factorize with editor
 374                                                 QueryManager qm = node.getSession().getWorkspace()
 375                                                                 .getQueryManager();
 376                                                 String statement = "SELECT * FROM ["
 377                                                                 + SlcTypes.SLC_EXECUTION_FLOW
 378                                                                 + "] WHERE ISDESCENDANTNODE(['" + path
 379                                                                 + "']) OR ISSAMENODE(['" + path + "'])";
 380                                                 // log.debug(statement);
 381                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 382
 383                                                 // order paths
 384                                                 SortedSet<String> paths = new TreeSet<String>();
 385                                                 for (NodeIterator nit = query.execute().getNodes(); nit
 386                                                                 .hasNext();) {
 387                                                         paths.add(nit.nextNode().getPath());
 388                                                 }
 389
 390                                                 // List<String> paths = new ArrayList<String>();
 391                                                 // paths.add(node.getPath());
 392                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 393                                                                 .getActiveWorkbenchWindow().getActivePage();
 394                                                 activePage.openEditor(new ProcessEditorInput(
 395                                                                 new ArrayList<String>(paths), true),
 396                                                                 ProcessEditor.ID);
 397                                         }
 398                                 }
 399                         } catch (Exception e) {
 400                                 throw new SlcException("Cannot open " + obj, e);
 401                         }
 402                 }
 403
 404         }
 405
 406         class ViewDragListener extends DragSourceAdapter {
 407                 public void dragSetData(DragSourceEvent event) {
 408                         IStructuredSelection selection = (IStructuredSelection) viewer
 409                                         .getSelection();
 410                         if (selection.getFirstElement() instanceof Node) {
 411                                 Node node = (Node) selection.getFirstElement();
 412                                 // try {
 413                                 // if (node.isNodeType(SLC_EXECUTION_FLOW)) {
 414                                 // if (EditorInputTransfer.getInstance().isSupportedType(
 415                                 // event.dataType)) {
 416                                 // ProcessEditorInput pei = new ProcessEditorInput(
 417                                 // node.getPath());
 418                                 // EditorInputData eid = EditorInputTransfer
 419                                 // .createEditorInputData(ProcessEditor.ID,
 420                                 // pei);
 421                                 // event.data = new EditorInputTransfer.EditorInputData[] { eid
 422                                 // };
 423                                 //
 424                                 // }
 425                                 // }
 426                                 // } catch (RepositoryException e1) {
 427                                 // throw new SlcException("Cannot drag " + node, e1);
 428                                 // }
 429
 430                                 if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
 431                                         try {
 432                                                 event.data = node.getPath();
 433                                         } catch (RepositoryException e1) {
 434                                                 // TODO Auto-generated catch block
 435                                                 e1.printStackTrace();
 436                                         }
 437                                 }
 438                         }
 439                 }
 440         }
 441
 442         public void setSession(Session session) {
 443                 this.session = session;
 444         }
 445
 446         public void setModulesManager(ExecutionModulesManager modulesManager) {
 447                 this.modulesManager = modulesManager;
 448         }
 449
 450 }