plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/views/JcrExecutionModulesView.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.client.ui.views;
  17
  18 import java.util.ArrayList;
  19 import java.util.Arrays;
  20 import java.util.Comparator;
  21 import java.util.Iterator;
  22 import java.util.List;
  23 import java.util.SortedSet;
  24 import java.util.TreeSet;
  25
  26 import javax.jcr.Node;
  27 import javax.jcr.NodeIterator;
  28 import javax.jcr.Property;
  29 import javax.jcr.RepositoryException;
  30 import javax.jcr.Session;
  31 import javax.jcr.nodetype.NodeType;
  32 import javax.jcr.observation.Event;
  33 import javax.jcr.query.Query;
  34 import javax.jcr.query.QueryManager;
  35
  36 import org.apache.commons.logging.Log;
  37 import org.apache.commons.logging.LogFactory;
  38 import org.argeo.ArgeoException;
  39 import org.argeo.eclipse.ui.jcr.AsyncUiEventListener;
  40 import org.argeo.eclipse.ui.jcr.DefaultNodeLabelProvider;
  41 import org.argeo.eclipse.ui.jcr.NodeElementComparer;
  42 import org.argeo.eclipse.ui.jcr.SimpleNodeContentProvider;
  43 import org.argeo.eclipse.ui.specific.EclipseUiSpecificUtils;
  44 import org.argeo.slc.BasicNameVersion;
  45 import org.argeo.slc.NameVersion;
  46 import org.argeo.slc.SlcException;
  47 import org.argeo.slc.client.ui.SlcImages;
  48 import org.argeo.slc.client.ui.editors.ProcessEditor;
  49 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  50 import org.argeo.slc.execution.ExecutionModulesManager;
  51 import org.argeo.slc.jcr.SlcJcrConstants;
  52 import org.argeo.slc.jcr.SlcNames;
  53 import org.argeo.slc.jcr.SlcTypes;
  54 import org.eclipse.core.runtime.IProgressMonitor;
  55 import org.eclipse.core.runtime.IStatus;
  56 import org.eclipse.core.runtime.Status;
  57 import org.eclipse.core.runtime.jobs.Job;
  58 import org.eclipse.jface.viewers.DoubleClickEvent;
  59 import org.eclipse.jface.viewers.IDoubleClickListener;
  60 import org.eclipse.jface.viewers.IStructuredSelection;
  61 import org.eclipse.jface.viewers.ITableLabelProvider;
  62 import org.eclipse.jface.viewers.TreeViewer;
  63 import org.eclipse.swt.SWT;
  64 import org.eclipse.swt.dnd.DND;
  65 import org.eclipse.swt.dnd.DragSourceAdapter;
  66 import org.eclipse.swt.dnd.DragSourceEvent;
  67 import org.eclipse.swt.dnd.TextTransfer;
  68 import org.eclipse.swt.dnd.Transfer;
  69 import org.eclipse.swt.graphics.Image;
  70 import org.eclipse.swt.widgets.Composite;
  71 import org.eclipse.swt.widgets.Display;
  72 import org.eclipse.ui.IWorkbenchPage;
  73 import org.eclipse.ui.PlatformUI;
  74 import org.eclipse.ui.part.ViewPart;
  75
  76 /** JCR based view of the execution modules. */
  77 public class JcrExecutionModulesView extends ViewPart implements SlcTypes,
  78                 SlcNames {
  79         private final static Log log = LogFactory
  80                         .getLog(JcrExecutionModulesView.class);
  81
  82         public static final String ID = "org.argeo.slc.client.ui.jcrExecutionModulesView";
  83
  84         private TreeViewer viewer;
  85
  86         private Session session;
  87
  88         private ExecutionModulesManager modulesManager;
  89
  90         public void createPartControl(Composite parent) {
  91                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  92                 EclipseUiSpecificUtils.enableToolTipSupport(viewer);
  93
  94                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  95                 viewer.setContentProvider(contentProvider);
  96                 viewer.setComparer(new NodeElementComparer());
  97                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  98                 viewer.setLabelProvider(viewLabelProvider);
  99                 viewer.setInput(getViewSite());
 100                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
 101                 getViewSite().setSelectionProvider(viewer);
 102
 103                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
 104                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
 105                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
 106                 viewer.addDragSupport(operations, tt, new ViewDragListener());
 107
 108                 try {
 109                         String[] nodeTypes = { SlcTypes.SLC_AGENT,
 110                                         SlcTypes.SLC_AGENT_FACTORY, SlcTypes.SLC_EXECUTION_MODULE };
 111                         session.getWorkspace()
 112                                         .getObservationManager()
 113                                         .addEventListener(
 114                                                         new VmAgentObserver(viewer.getTree().getDisplay()),
 115                                                         Event.NODE_ADDED | Event.NODE_REMOVED
 116                                                                         | Event.NODE_MOVED,
 117                                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH, true, null,
 118                                                         nodeTypes, false);
 119                 } catch (RepositoryException e) {
 120                         throw new SlcException("Cannot add observer", e);
 121                 }
 122         }
 123
 124         public void setFocus() {
 125                 viewer.getControl().setFocus();
 126         }
 127
 128         public TreeViewer getViewer() {
 129                 return viewer;
 130         }
 131
 132         public void refreshView() {
 133                 viewer.setInput(getViewSite());
 134         }
 135
 136         class ViewContentProvider extends SimpleNodeContentProvider {
 137
 138                 public ViewContentProvider(Session session) {
 139                         super(session,
 140                                         new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 141                 }
 142
 143                 // @Override
 144                 // protected Object[] getChildren(Node node) throws RepositoryException
 145                 // {
 146                 // if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY)) {
 147                 // List<AgentNodesWrapper> wrappers = new
 148                 // ArrayList<AgentNodesWrapper>();
 149                 // for (NodeIterator nit = node.getNodes(); nit.hasNext();) {
 150                 // wrappers.add(new AgentNodesWrapper(nit.nextNode()));
 151                 // }
 152                 // return wrappers.toArray();
 153                 // }
 154                 // return super.getChildren(node);
 155                 // }
 156
 157                 @Override
 158                 protected Object[] sort(Object parent, Object[] children) {
 159                         Object[] sorted = new Object[children.length];
 160                         System.arraycopy(children, 0, sorted, 0, children.length);
 161                         Arrays.sort(sorted, new ViewComparator());
 162                         return sorted;
 163                 }
 164
 165                 @Override
 166                 protected List<Node> filterChildren(List<Node> children)
 167                                 throws RepositoryException {
 168                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 169                                 Node node = it.next();
 170                                 // execution spec definitions
 171                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 172                                         it.remove();
 173                                 // flow values
 174                                 else if (node.getParent().isNodeType(
 175                                                 SlcTypes.SLC_EXECUTION_FLOW))
 176                                         it.remove();
 177                         }
 178                         return super.filterChildren(children);
 179                 }
 180
 181                 @Override
 182                 public boolean hasChildren(Object element) {
 183                         if (element instanceof Node) {
 184                                 Node node = (Node) element;
 185                                 try {
 186                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 187                                                 return false;
 188                                 } catch (RepositoryException e) {
 189                                         throw new SlcException("Cannot check has children", e);
 190                                 }
 191                         }
 192                         return super.hasChildren(element);
 193                 }
 194         }
 195
 196         static class ViewComparator implements Comparator<Object> {
 197
 198                 public int compare(Object o1, Object o2) {
 199                         try {
 200                                 if (o1 instanceof Node && o2 instanceof Node) {
 201                                         Node node1 = (Node) o1;
 202                                         Node node2 = (Node) o2;
 203
 204                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 205                                                 return -100;
 206                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 207                                                 return 100;
 208
 209                                         if (node1.isNodeType(SLC_EXECUTION_FLOW)
 210                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 211                                                 return node1.getName().compareTo(node2.getName());
 212                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW)
 213                                                         && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 214                                                 return 1;
 215                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW)
 216                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 217                                                 return -1;
 218                                         } else {
 219                                                 // TODO: check title
 220                                                 return node1.getName().compareTo(node2.getName());
 221                                         }
 222                                 }
 223                         } catch (RepositoryException e) {
 224                                 throw new ArgeoException("Cannot compare " + o1 + " and " + o2,
 225                                                 e);
 226                         }
 227                         return 0;
 228                 }
 229
 230         }
 231
 232         // /** Wraps the execution modules of an agent. */
 233         // static class AgentNodesWrapper extends NodesWrapper {
 234         //
 235         // public AgentNodesWrapper(Node node) {
 236         // super(node);
 237         // }
 238         //
 239         // protected List<WrappedNode> getWrappedNodes()
 240         // throws RepositoryException {
 241         // List<WrappedNode> children = new ArrayList<WrappedNode>();
 242         // Node executionModules = getNode();
 243         // for (NodeIterator nit = executionModules.getNodes(); nit.hasNext();) {
 244         // for (NodeIterator nitVersions = nit.nextNode().getNodes(); nitVersions
 245         // .hasNext();) {
 246         // children.add(new WrappedNode(this, nitVersions.nextNode()));
 247         // }
 248         // }
 249         // return children;
 250         // }
 251         //
 252         // }
 253
 254         class VmAgentObserver extends AsyncUiEventListener {
 255
 256                 public VmAgentObserver(Display display) {
 257                         super(display);
 258                 }
 259
 260                 protected void onEventInUiThread(List<Event> events) {
 261                         for (Event event : events) {
 262                                 try {
 263                                         String path = event.getPath();
 264
 265                                         if (session.itemExists(path)) {
 266                                                 Node parentNode = session.getNode(path);// .getParent();
 267                                                 if (log.isTraceEnabled())
 268                                                         log.trace("Refresh " + parentNode + " after event "
 269                                                                         + event);
 270                                                 viewer.refresh(parentNode);
 271                                         }
 272                                 } catch (RepositoryException e) {
 273                                         log.warn("Cannot process event " + event + ": " + e);
 274                                 }
 275                         }
 276
 277                         // try {
 278                         // Node vmAgentNode = session
 279                         // .getNode(SlcJcrConstants.VM_AGENT_FACTORY_PATH);
 280                         // viewer.refresh(vmAgentNode);
 281                         // } catch (RepositoryException e) {
 282                         // log.warn("Cannot process event : " + e);
 283                         // }
 284                         // TODO: optimize based on event
 285                         viewer.refresh();
 286                 }
 287         }
 288
 289         class ViewLabelProvider extends DefaultNodeLabelProvider implements
 290                         ITableLabelProvider {
 291
 292                 @Override
 293                 protected String getText(Node node) throws RepositoryException {
 294                         if (node.isNodeType(NodeType.MIX_TITLE)
 295                                         && node.hasProperty(Property.JCR_TITLE))
 296                                 return node.getProperty(Property.JCR_TITLE).getString();
 297                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 298                                 return "Execution Specifications";
 299                         else if (node.getPath().equals(
 300                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 301                                 return "Internal Agents";
 302                         return super.getText(node);
 303                 }
 304
 305                 @Override
 306                 public Image getImage(Node node) throws RepositoryException {
 307                         // we try to optimize a bit by putting deeper nodes first
 308                         if (node.getParent().isNodeType(
 309                                         SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 310                                 return SlcImages.CHOICES;
 311                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 312                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 313                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 314                                 return SlcImages.EXECUTION_SPEC;
 315                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 316                                 return SlcImages.EXECUTION_SPECS;
 317                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 318                                 return SlcImages.FLOW;
 319                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 320                                 if (node.getProperty(SLC_STARTED).getBoolean())
 321                                         return SlcImages.MODULE;
 322                                 else
 323                                         return SlcImages.MODULE_STOPPED;
 324                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 325                                 return SlcImages.AGENT;
 326                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 327                                 return SlcImages.AGENT_FACTORY;
 328                         else
 329                                 return SlcImages.FOLDER;
 330                 }
 331
 332                 public String getToolTipText(Node node) throws RepositoryException {
 333                         if (node.isNodeType(NodeType.MIX_TITLE)
 334                                         && node.hasProperty(Property.JCR_DESCRIPTION))
 335                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 336                         return super.getToolTipText(node);
 337                 }
 338
 339                 public String getColumnText(Object obj, int index) {
 340                         return getText(obj);
 341                 }
 342
 343                 public Image getColumnImage(Object obj, int index) {
 344                         return getImage(obj);
 345                 }
 346
 347         }
 348
 349         class ViewDoubleClickListener implements IDoubleClickListener {
 350                 public void doubleClick(DoubleClickEvent evt) {
 351                         Object obj = ((IStructuredSelection) evt.getSelection())
 352                                         .getFirstElement();
 353                         try {
 354                                 if (obj instanceof Node) {
 355                                         Node node = (Node) obj;
 356                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 357                                                 String name = node.getProperty(SLC_NAME).getString();
 358                                                 String version = node.getProperty(SLC_VERSION)
 359                                                                 .getString();
 360                                                 final NameVersion nameVersion = new BasicNameVersion(
 361                                                                 name, version);
 362                                                 Boolean started = node.getProperty(SLC_STARTED)
 363                                                                 .getBoolean();
 364
 365                                                 Job job;
 366                                                 if (started) {
 367                                                         job = new Job("Stop " + nameVersion) {
 368                                                                 protected IStatus run(IProgressMonitor monitor) {
 369                                                                         monitor.beginTask("Stop " + nameVersion, 1);
 370                                                                         modulesManager.stop(nameVersion);
 371                                                                         monitor.worked(1);
 372                                                                         return Status.OK_STATUS;
 373                                                                 }
 374
 375                                                                 protected void canceling() {
 376                                                                         getThread().interrupt();
 377                                                                         super.canceling();
 378                                                                 }
 379                                                         };
 380                                                 } else {
 381                                                         job = new Job("Start " + nameVersion) {
 382                                                                 protected IStatus run(IProgressMonitor monitor) {
 383                                                                         monitor.beginTask("Start " + nameVersion, 1);
 384                                                                         modulesManager.start(nameVersion);
 385                                                                         monitor.worked(1);
 386                                                                         return Status.OK_STATUS;
 387                                                                 }
 388
 389                                                                 protected void canceling() {
 390                                                                         getThread().interrupt();
 391                                                                         super.canceling();
 392                                                                 }
 393                                                         };
 394                                                 }
 395                                                 job.setUser(true);
 396                                                 job.schedule();
 397                                         } else {
 398                                                 String path = node.getPath();
 399                                                 // TODO factorize with editor
 400                                                 QueryManager qm = node.getSession().getWorkspace()
 401                                                                 .getQueryManager();
 402                                                 String statement = "SELECT * FROM ["
 403                                                                 + SlcTypes.SLC_EXECUTION_FLOW
 404                                                                 + "] WHERE ISDESCENDANTNODE(['" + path
 405                                                                 + "']) OR ISSAMENODE(['" + path + "'])";
 406                                                 // log.debug(statement);
 407                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 408
 409                                                 // order paths
 410                                                 SortedSet<String> paths = new TreeSet<String>();
 411                                                 for (NodeIterator nit = query.execute().getNodes(); nit
 412                                                                 .hasNext();) {
 413                                                         paths.add(nit.nextNode().getPath());
 414                                                 }
 415
 416                                                 // List<String> paths = new ArrayList<String>();
 417                                                 // paths.add(node.getPath());
 418                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 419                                                                 .getActiveWorkbenchWindow().getActivePage();
 420                                                 activePage.openEditor(new ProcessEditorInput(
 421                                                                 new ArrayList<String>(paths), true),
 422                                                                 ProcessEditor.ID);
 423                                         }
 424                                 }
 425                         } catch (Exception e) {
 426                                 throw new SlcException("Cannot open " + obj, e);
 427                         }
 428                 }
 429
 430         }
 431
 432         class ViewDragListener extends DragSourceAdapter {
 433                 public void dragSetData(DragSourceEvent event) {
 434                         IStructuredSelection selection = (IStructuredSelection) viewer
 435                                         .getSelection();
 436                         if (selection.getFirstElement() instanceof Node) {
 437                                 Node node = (Node) selection.getFirstElement();
 438                                 // try {
 439                                 // if (node.isNodeType(SLC_EXECUTION_FLOW)) {
 440                                 // if (EditorInputTransfer.getInstance().isSupportedType(
 441                                 // event.dataType)) {
 442                                 // ProcessEditorInput pei = new ProcessEditorInput(
 443                                 // node.getPath());
 444                                 // EditorInputData eid = EditorInputTransfer
 445                                 // .createEditorInputData(ProcessEditor.ID,
 446                                 // pei);
 447                                 // event.data = new EditorInputTransfer.EditorInputData[] { eid
 448                                 // };
 449                                 //
 450                                 // }
 451                                 // }
 452                                 // } catch (RepositoryException e1) {
 453                                 // throw new SlcException("Cannot drag " + node, e1);
 454                                 // }
 455
 456                                 if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
 457                                         try {
 458                                                 event.data = node.getPath();
 459                                         } catch (RepositoryException e1) {
 460                                                 // TODO Auto-generated catch block
 461                                                 e1.printStackTrace();
 462                                         }
 463                                 }
 464                         }
 465                 }
 466         }
 467
 468         public void setSession(Session session) {
 469                 this.session = session;
 470         }
 471
 472         public void setModulesManager(ExecutionModulesManager modulesManager) {
 473                 this.modulesManager = modulesManager;
 474         }
 475
 476 }