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