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.observation.EventIterator;
  19 import javax.jcr.query.Query;
  20 import javax.jcr.query.QueryManager;
  21
  22 import org.argeo.ArgeoException;
  23 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  24 import org.argeo.eclipse.ui.jcr.DefaultNodeLabelProvider;
  25 import org.argeo.eclipse.ui.jcr.SimpleNodeContentProvider;
  26 import org.argeo.slc.BasicNameVersion;
  27 import org.argeo.slc.NameVersion;
  28 import org.argeo.slc.SlcException;
  29 import org.argeo.slc.client.ui.SlcImages;
  30 import org.argeo.slc.client.ui.editors.ProcessEditor;
  31 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  32 import org.argeo.slc.execution.ExecutionModulesManager;
  33 import org.argeo.slc.jcr.SlcJcrConstants;
  34 import org.argeo.slc.jcr.SlcNames;
  35 import org.argeo.slc.jcr.SlcTypes;
  36 import org.eclipse.jface.viewers.DoubleClickEvent;
  37 import org.eclipse.jface.viewers.IDoubleClickListener;
  38 import org.eclipse.jface.viewers.IStructuredSelection;
  39 import org.eclipse.jface.viewers.ITableLabelProvider;
  40 import org.eclipse.jface.viewers.TreeViewer;
  41 import org.eclipse.swt.SWT;
  42 import org.eclipse.swt.dnd.DND;
  43 import org.eclipse.swt.dnd.DragSourceAdapter;
  44 import org.eclipse.swt.dnd.DragSourceEvent;
  45 import org.eclipse.swt.dnd.TextTransfer;
  46 import org.eclipse.swt.dnd.Transfer;
  47 import org.eclipse.swt.graphics.Image;
  48 import org.eclipse.swt.widgets.Composite;
  49 import org.eclipse.swt.widgets.Display;
  50 import org.eclipse.ui.IWorkbenchPage;
  51 import org.eclipse.ui.PlatformUI;
  52 import org.eclipse.ui.part.ViewPart;
  53
  54 /** JCR based view of the execution modules. */
  55 public class JcrExecutionModulesView extends ViewPart implements SlcTypes,
  56                 SlcNames {
  57         // private final static Log log = LogFactory
  58         // .getLog(JcrExecutionModulesView.class);
  59
  60         public static final String ID = "org.argeo.slc.client.ui.jcrExecutionModulesView";
  61
  62         private TreeViewer viewer;
  63
  64         private Session session;
  65
  66         private ExecutionModulesManager modulesManager;
  67
  68         public void createPartControl(Composite parent) {
  69                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  70
  71                 // FIXME : does not work in RAP, find a way to have it for RCP only
  72                 // ColumnViewerToolTipSupport.enableFor(viewer);
  73
  74                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  75
  76                 viewer.setContentProvider(contentProvider);
  77                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  78                 viewer.setLabelProvider(viewLabelProvider);
  79                 viewer.setInput(getViewSite());
  80                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  81                 getViewSite().setSelectionProvider(viewer);
  82
  83                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
  84                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
  85                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
  86                 viewer.addDragSupport(operations, tt, new ViewDragListener());
  87
  88                 try {
  89                         session.getWorkspace()
  90                                         .getObservationManager()
  91                                         .addEventListener(
  92                                                         new VmAgentObserver(viewer.getTree().getDisplay()),
  93                                                         Event.NODE_ADDED | Event.NODE_REMOVED
  94                                                                         | Event.NODE_MOVED,
  95                                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH, true, null,
  96                                                         null, false);
  97                 } catch (RepositoryException e) {
  98                         throw new SlcException("Cannot add observer", e);
  99                 }
 100         }
 101
 102         public void setFocus() {
 103                 viewer.getControl().setFocus();
 104         }
 105
 106         public TreeViewer getViewer() {
 107                 return viewer;
 108         }
 109
 110         public void refreshView() {
 111                 viewer.setInput(getViewSite());
 112         }
 113
 114         class ViewContentProvider extends SimpleNodeContentProvider {
 115
 116                 public ViewContentProvider(Session session) {
 117                         super(session,
 118                                         new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 119                 }
 120
 121                 // @Override
 122                 // protected Object[] getChildren(Node node) throws RepositoryException
 123                 // {
 124                 // if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY)) {
 125                 // List<AgentNodesWrapper> wrappers = new
 126                 // ArrayList<AgentNodesWrapper>();
 127                 // for (NodeIterator nit = node.getNodes(); nit.hasNext();) {
 128                 // wrappers.add(new AgentNodesWrapper(nit.nextNode()));
 129                 // }
 130                 // return wrappers.toArray();
 131                 // }
 132                 // return super.getChildren(node);
 133                 // }
 134
 135                 @Override
 136                 protected Object[] sort(Object parent, Object[] children) {
 137                         Object[] sorted = new Object[children.length];
 138                         System.arraycopy(children, 0, sorted, 0, children.length);
 139                         Arrays.sort(sorted, new ViewComparator());
 140                         return sorted;
 141                 }
 142
 143                 @Override
 144                 protected List<Node> filterChildren(List<Node> children)
 145                                 throws RepositoryException {
 146                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 147                                 Node node = it.next();
 148                                 // execution spec definitions
 149                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 150                                         it.remove();
 151                                 // flow values
 152                                 else if (node.getParent().isNodeType(
 153                                                 SlcTypes.SLC_EXECUTION_FLOW))
 154                                         it.remove();
 155                         }
 156                         return super.filterChildren(children);
 157                 }
 158
 159                 @Override
 160                 public boolean hasChildren(Object element) {
 161                         if (element instanceof Node) {
 162                                 Node node = (Node) element;
 163                                 try {
 164                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 165                                                 return false;
 166                                 } catch (RepositoryException e) {
 167                                         throw new SlcException("Cannot check has children", e);
 168                                 }
 169                         }
 170                         return super.hasChildren(element);
 171                 }
 172         }
 173
 174         static class ViewComparator implements Comparator<Object> {
 175
 176                 public int compare(Object o1, Object o2) {
 177                         try {
 178                                 if (o1 instanceof Node && o2 instanceof Node) {
 179                                         Node node1 = (Node) o1;
 180                                         Node node2 = (Node) o2;
 181
 182                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 183                                                 return -100;
 184                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 185                                                 return 100;
 186
 187                                         if (node1.isNodeType(SLC_EXECUTION_FLOW)
 188                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 189                                                 return node1.getName().compareTo(node2.getName());
 190                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW)
 191                                                         && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 192                                                 return 1;
 193                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW)
 194                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 195                                                 return -1;
 196                                         } else {
 197                                                 // TODO: check title
 198                                                 return node1.getName().compareTo(node2.getName());
 199                                         }
 200                                 }
 201                         } catch (RepositoryException e) {
 202                                 throw new ArgeoException("Cannot compare " + o1 + " and " + o2,
 203                                                 e);
 204                         }
 205                         return 0;
 206                 }
 207
 208         }
 209
 210         // /** Wraps the execution modules of an agent. */
 211         // static class AgentNodesWrapper extends NodesWrapper {
 212         //
 213         // public AgentNodesWrapper(Node node) {
 214         // super(node);
 215         // }
 216         //
 217         // protected List<WrappedNode> getWrappedNodes()
 218         // throws RepositoryException {
 219         // List<WrappedNode> children = new ArrayList<WrappedNode>();
 220         // Node executionModules = getNode();
 221         // for (NodeIterator nit = executionModules.getNodes(); nit.hasNext();) {
 222         // for (NodeIterator nitVersions = nit.nextNode().getNodes(); nitVersions
 223         // .hasNext();) {
 224         // children.add(new WrappedNode(this, nitVersions.nextNode()));
 225         // }
 226         // }
 227         // return children;
 228         // }
 229         //
 230         // }
 231
 232         class VmAgentObserver extends AsyncUiEventListener {
 233
 234                 public VmAgentObserver(Display display) {
 235                         super(display);
 236                 }
 237
 238                 protected void onEventInUiThread(EventIterator events) {
 239                         // List<Node> baseNodes = ((SimpleNodeContentProvider) viewer
 240                         // .getContentProvider()).getBaseNodes();
 241                         // Node baseNode = baseNodes.get(0);
 242                         //
 243                         // while (events.hasNext()) {
 244                         // Event event = events.nextEvent();
 245                         // try {
 246                         // String path = event.getPath();
 247                         // String baseNodePath = baseNode.getPath();
 248                         // if (path.startsWith(baseNodePath)) {
 249                         // String relPath = path
 250                         // .substring(baseNodePath.length() + 1);
 251                         // log.debug("relPath: " + relPath);
 252                         // if (baseNode.hasNode(relPath)) {
 253                         // Node refreshNode = baseNode.getNode(relPath);
 254                         // log.debug("refreshNode: " + refreshNode);
 255                         // viewer.refresh(refreshNode);
 256                         // }
 257                         //
 258                         // }
 259                         // // if (log.isDebugEnabled())
 260                         // // log.debug("Process " + path + ": " + event);
 261                         //
 262                         // // if (session.itemExists(path)) {
 263                         // // Node parentNode = session.getNode(path).getParent();
 264                         // // log.debug("Parent: " + parentNode);
 265                         // // viewer.refresh(parentNode);
 266                         // // }
 267                         // } catch (RepositoryException e) {
 268                         // log.warn("Cannot process event " + event + ": " + e);
 269                         // }
 270                         // }
 271
 272                         // try {
 273                         // Node vmAgentNode = session
 274                         // .getNode(SlcJcrConstants.VM_AGENT_FACTORY_PATH);
 275                         // viewer.refresh(vmAgentNode);
 276                         // } catch (RepositoryException e) {
 277                         // log.warn("Cannot process event : " + e);
 278                         // }
 279                         // TODO: optimize based on event
 280                         viewer.refresh();
 281                 }
 282         }
 283
 284         class ViewLabelProvider extends DefaultNodeLabelProvider implements
 285                         ITableLabelProvider {
 286
 287                 @Override
 288                 protected String getText(Node node) throws RepositoryException {
 289                         if (node.getName().equals(SLC_EXECUTION_SPECS))
 290                                 return "Execution Specifications";
 291                         else if (node.getPath().equals(
 292                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 293                                 return "Internal Agents";
 294                         return super.getText(node);
 295                 }
 296
 297                 @Override
 298                 public Image getImage(Node node) throws RepositoryException {
 299                         // we try to optimize a bit by putting deeper nodes first
 300                         if (node.getParent().isNodeType(
 301                                         SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 302                                 return SlcImages.CHOICES;
 303                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 304                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 305                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 306                                 return SlcImages.EXECUTION_SPEC;
 307                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 308                                 return SlcImages.EXECUTION_SPECS;
 309                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 310                                 return SlcImages.FLOW;
 311                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 312                                 if (node.getProperty(SLC_STARTED).getBoolean())
 313                                         return SlcImages.MODULE;
 314                                 else
 315                                         return SlcImages.MODULE_STOPPED;
 316                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 317                                 return SlcImages.AGENT;
 318                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 319                                 return SlcImages.AGENT_FACTORY;
 320                         else
 321                                 return SlcImages.FOLDER;
 322                 }
 323
 324                 public String getToolTipText(Node node) throws RepositoryException {
 325                         if (node.isNodeType(NodeType.MIX_TITLE)
 326                                         && node.hasProperty(Property.JCR_DESCRIPTION))
 327                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 328                         return super.getToolTipText(node);
 329                 }
 330
 331                 public String getColumnText(Object obj, int index) {
 332                         return getText(obj);
 333                 }
 334
 335                 public Image getColumnImage(Object obj, int index) {
 336                         return getImage(obj);
 337                 }
 338
 339         }
 340
 341         class ViewDoubleClickListener implements IDoubleClickListener {
 342                 public void doubleClick(DoubleClickEvent evt) {
 343                         Object obj = ((IStructuredSelection) evt.getSelection())
 344                                         .getFirstElement();
 345                         try {
 346                                 if (obj instanceof Node) {
 347                                         Node node = (Node) obj;
 348                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 349                                                 String name = node.getProperty(SLC_NAME).getString();
 350                                                 String version = node.getProperty(SLC_VERSION)
 351                                                                 .getString();
 352                                                 NameVersion nameVersion = new BasicNameVersion(name,
 353                                                                 version);
 354                                                 Boolean started = node.getProperty(SLC_STARTED)
 355                                                                 .getBoolean();
 356                                                 if (started) {
 357                                                         modulesManager.stop(nameVersion);
 358                                                 } else {
 359                                                         modulesManager.start(nameVersion);
 360                                                 }
 361                                         } else {
 362                                                 String path = node.getPath();
 363                                                 // TODO factorize with editor
 364                                                 QueryManager qm = node.getSession().getWorkspace()
 365                                                                 .getQueryManager();
 366                                                 String statement = "SELECT * FROM ["
 367                                                                 + SlcTypes.SLC_EXECUTION_FLOW
 368                                                                 + "] WHERE ISDESCENDANTNODE(['" + path
 369                                                                 + "']) OR ISSAMENODE(['" + path + "'])";
 370                                                 // log.debug(statement);
 371                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 372
 373                                                 // order paths
 374                                                 SortedSet<String> paths = new TreeSet<String>();
 375                                                 for (NodeIterator nit = query.execute().getNodes(); nit
 376                                                                 .hasNext();) {
 377                                                         paths.add(nit.nextNode().getPath());
 378                                                 }
 379
 380                                                 // List<String> paths = new ArrayList<String>();
 381                                                 // paths.add(node.getPath());
 382                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 383                                                                 .getActiveWorkbenchWindow().getActivePage();
 384                                                 activePage.openEditor(new ProcessEditorInput(
 385                                                                 new ArrayList<String>(paths), true),
 386                                                                 ProcessEditor.ID);
 387                                         }
 388                                 }
 389                         } catch (Exception e) {
 390                                 throw new SlcException("Cannot open " + obj, e);
 391                         }
 392                 }
 393
 394         }
 395
 396         class ViewDragListener extends DragSourceAdapter {
 397                 public void dragSetData(DragSourceEvent event) {
 398                         IStructuredSelection selection = (IStructuredSelection) viewer
 399                                         .getSelection();
 400                         if (selection.getFirstElement() instanceof Node) {
 401                                 Node node = (Node) selection.getFirstElement();
 402                                 // try {
 403                                 // if (node.isNodeType(SLC_EXECUTION_FLOW)) {
 404                                 // if (EditorInputTransfer.getInstance().isSupportedType(
 405                                 // event.dataType)) {
 406                                 // ProcessEditorInput pei = new ProcessEditorInput(
 407                                 // node.getPath());
 408                                 // EditorInputData eid = EditorInputTransfer
 409                                 // .createEditorInputData(ProcessEditor.ID,
 410                                 // pei);
 411                                 // event.data = new EditorInputTransfer.EditorInputData[] { eid
 412                                 // };
 413                                 //
 414                                 // }
 415                                 // }
 416                                 // } catch (RepositoryException e1) {
 417                                 // throw new SlcException("Cannot drag " + node, e1);
 418                                 // }
 419
 420                                 if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
 421                                         try {
 422                                                 event.data = node.getPath();
 423                                         } catch (RepositoryException e1) {
 424                                                 // TODO Auto-generated catch block
 425                                                 e1.printStackTrace();
 426                                         }
 427                                 }
 428                         }
 429                 }
 430         }
 431
 432         public void setSession(Session session) {
 433                 this.session = session;
 434         }
 435
 436         public void setModulesManager(ExecutionModulesManager modulesManager) {
 437                 this.modulesManager = modulesManager;
 438         }
 439
 440 }