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

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   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.SlcException;
  45 import org.argeo.slc.client.ui.ClientUiPlugin;
  46 import org.argeo.slc.client.ui.SlcImages;
  47 import org.argeo.slc.client.ui.editors.ProcessEditor;
  48 import org.argeo.slc.client.ui.editors.ProcessEditorInput;
  49 import org.argeo.slc.execution.ExecutionModulesManager;
  50 import org.argeo.slc.jcr.SlcJcrConstants;
  51 import org.argeo.slc.jcr.SlcNames;
  52 import org.argeo.slc.jcr.SlcTypes;
  53 import org.eclipse.jface.viewers.DoubleClickEvent;
  54 import org.eclipse.jface.viewers.IDoubleClickListener;
  55 import org.eclipse.jface.viewers.IStructuredSelection;
  56 import org.eclipse.jface.viewers.ITableLabelProvider;
  57 import org.eclipse.jface.viewers.TreeViewer;
  58 import org.eclipse.swt.SWT;
  59 import org.eclipse.swt.dnd.DND;
  60 import org.eclipse.swt.dnd.DragSourceAdapter;
  61 import org.eclipse.swt.dnd.DragSourceEvent;
  62 import org.eclipse.swt.dnd.TextTransfer;
  63 import org.eclipse.swt.dnd.Transfer;
  64 import org.eclipse.swt.graphics.Image;
  65 import org.eclipse.swt.widgets.Composite;
  66 import org.eclipse.swt.widgets.Display;
  67 import org.eclipse.ui.IWorkbenchPage;
  68 import org.eclipse.ui.PlatformUI;
  69 import org.eclipse.ui.part.ViewPart;
  70
  71 /** JCR based view of the execution modules. */
  72 public class JcrExecutionModulesView extends ViewPart implements SlcTypes,
  73                 SlcNames {
  74         private final static Log log = LogFactory
  75                         .getLog(JcrExecutionModulesView.class);
  76
  77         public static final String ID = ClientUiPlugin.ID
  78                         + ".jcrExecutionModulesView";
  79
  80         private TreeViewer viewer;
  81
  82         private Session session;
  83
  84         private ExecutionModulesManager modulesManager;
  85
  86         public void createPartControl(Composite parent) {
  87                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  88                 EclipseUiSpecificUtils.enableToolTipSupport(viewer);
  89
  90                 ViewContentProvider contentProvider = new ViewContentProvider(session);
  91                 viewer.setContentProvider(contentProvider);
  92                 viewer.setComparer(new NodeElementComparer());
  93                 final ViewLabelProvider viewLabelProvider = new ViewLabelProvider();
  94                 viewer.setLabelProvider(viewLabelProvider);
  95                 viewer.setInput(getViewSite());
  96                 viewer.addDoubleClickListener(new ViewDoubleClickListener());
  97                 getViewSite().setSelectionProvider(viewer);
  98
  99                 Transfer[] tt = new Transfer[] { TextTransfer.getInstance() };
 100                 // Transfer[] tt = new Transfer[] { EditorInputTransfer.getInstance() };
 101                 int operations = DND.DROP_COPY | DND.DROP_MOVE;
 102                 viewer.addDragSupport(operations, tt, new ViewDragListener());
 103
 104                 try {
 105                         String[] nodeTypes = { SlcTypes.SLC_AGENT,
 106                                         SlcTypes.SLC_AGENT_FACTORY, SlcTypes.SLC_EXECUTION_MODULE };
 107                         session.getWorkspace()
 108                                         .getObservationManager()
 109                                         .addEventListener(
 110                                                         new VmAgentObserver(viewer.getTree().getDisplay()),
 111                                                         Event.NODE_ADDED | Event.NODE_REMOVED
 112                                                                         | Event.NODE_MOVED,
 113                                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH, true, null,
 114                                                         nodeTypes, false);
 115                 } catch (RepositoryException e) {
 116                         throw new SlcException("Cannot add observer", e);
 117                 }
 118         }
 119
 120         public void setFocus() {
 121                 viewer.getControl().setFocus();
 122         }
 123
 124         public TreeViewer getViewer() {
 125                 return viewer;
 126         }
 127
 128         public void refreshView() {
 129                 viewer.setInput(getViewSite());
 130         }
 131
 132         class ViewContentProvider extends SimpleNodeContentProvider {
 133
 134                 public ViewContentProvider(Session session) {
 135                         super(session,
 136                                         new String[] { SlcJcrConstants.VM_AGENT_FACTORY_PATH });
 137                 }
 138
 139                 @Override
 140                 protected Object[] sort(Object parent, Object[] children) {
 141                         Object[] sorted = new Object[children.length];
 142                         System.arraycopy(children, 0, sorted, 0, children.length);
 143                         Arrays.sort(sorted, new ViewComparator());
 144                         return sorted;
 145                 }
 146
 147                 @Override
 148                 protected List<Node> filterChildren(List<Node> children)
 149                                 throws RepositoryException {
 150                         for (Iterator<Node> it = children.iterator(); it.hasNext();) {
 151                                 Node node = it.next();
 152                                 // execution spec definitions
 153                                 if (node.getName().equals(SLC_EXECUTION_SPECS))
 154                                         it.remove();
 155                                 // flow values
 156                                 else if (node.getParent().isNodeType(
 157                                                 SlcTypes.SLC_EXECUTION_FLOW))
 158                                         it.remove();
 159                         }
 160                         return super.filterChildren(children);
 161                 }
 162
 163                 @Override
 164                 public boolean hasChildren(Object element) {
 165                         if (element instanceof Node) {
 166                                 Node node = (Node) element;
 167                                 try {
 168                                         if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 169                                                 return false;
 170                                 } catch (RepositoryException e) {
 171                                         throw new SlcException("Cannot check has children", e);
 172                                 }
 173                         }
 174                         return super.hasChildren(element);
 175                 }
 176         }
 177
 178         static class ViewComparator implements Comparator<Object> {
 179
 180                 public int compare(Object o1, Object o2) {
 181                         try {
 182                                 if (o1 instanceof Node && o2 instanceof Node) {
 183                                         Node node1 = (Node) o1;
 184                                         Node node2 = (Node) o2;
 185
 186                                         if (node1.getName().equals(SLC_EXECUTION_SPECS))
 187                                                 return -100;
 188                                         if (node2.getName().equals(SLC_EXECUTION_SPECS))
 189                                                 return 100;
 190
 191                                         if (node1.isNodeType(SLC_EXECUTION_FLOW)
 192                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 193                                                 return node1.getName().compareTo(node2.getName());
 194                                         } else if (node1.isNodeType(SLC_EXECUTION_FLOW)
 195                                                         && !node2.isNodeType(SLC_EXECUTION_FLOW)) {
 196                                                 return 1;
 197                                         } else if (!node1.isNodeType(SLC_EXECUTION_FLOW)
 198                                                         && node2.isNodeType(SLC_EXECUTION_FLOW)) {
 199                                                 return -1;
 200                                         } else {
 201                                                 // TODO: check title
 202                                                 return node1.getName().compareTo(node2.getName());
 203                                         }
 204                                 }
 205                         } catch (RepositoryException e) {
 206                                 throw new ArgeoException("Cannot compare " + o1 + " and " + o2,
 207                                                 e);
 208                         }
 209                         return 0;
 210                 }
 211
 212         }
 213
 214         class VmAgentObserver extends AsyncUiEventListener {
 215
 216                 public VmAgentObserver(Display display) {
 217                         super(display);
 218                 }
 219
 220                 protected void onEventInUiThread(List<Event> events) {
 221                         for (Event event : events) {
 222                                 try {
 223                                         String path = event.getPath();
 224
 225                                         if (session.itemExists(path)) {
 226                                                 Node parentNode = session.getNode(path);// .getParent();
 227                                                 if (log.isTraceEnabled())
 228                                                         log.trace("Refresh " + parentNode + " after event "
 229                                                                         + event);
 230                                                 viewer.refresh(parentNode);
 231                                         }
 232                                 } catch (RepositoryException e) {
 233                                         log.warn("Cannot process event " + event + ": " + e);
 234                                 }
 235                         }
 236
 237                         // TODO: optimize based on event
 238                         viewer.refresh();
 239                 }
 240         }
 241
 242         class ViewLabelProvider extends DefaultNodeLabelProvider implements
 243                         ITableLabelProvider {
 244
 245                 @Override
 246                 protected String getText(Node node) throws RepositoryException {
 247                         if (node.isNodeType(NodeType.MIX_TITLE)
 248                                         && node.hasProperty(Property.JCR_TITLE))
 249                                 return node.getProperty(Property.JCR_TITLE).getString();
 250                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 251                                 return "Execution Specifications";
 252                         else if (node.getPath().equals(
 253                                         SlcJcrConstants.VM_AGENT_FACTORY_PATH))
 254                                 return "Internal Agents";
 255                         return super.getText(node);
 256                 }
 257
 258                 @Override
 259                 public Image getImage(Node node) throws RepositoryException {
 260                         // we try to optimize a bit by putting deeper nodes first
 261                         if (node.getParent().isNodeType(
 262                                         SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 263                                 return SlcImages.CHOICES;
 264                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC_ATTRIBUTE))
 265                                 return SlcImages.EXECUTION_SPEC_ATTRIBUTE;
 266                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_SPEC))
 267                                 return SlcImages.EXECUTION_SPEC;
 268                         else if (node.getName().equals(SLC_EXECUTION_SPECS))
 269                                 return SlcImages.EXECUTION_SPECS;
 270                         else if (node.isNodeType(SlcTypes.SLC_EXECUTION_FLOW))
 271                                 return SlcImages.FLOW;
 272                         else if (node.isNodeType(SlcTypes.SLC_MODULE)) {
 273                                 if (node.getProperty(SLC_STARTED).getBoolean())
 274                                         return SlcImages.MODULE;
 275                                 else
 276                                         return SlcImages.MODULE_STOPPED;
 277                         } else if (node.isNodeType(SlcTypes.SLC_AGENT))
 278                                 return SlcImages.AGENT;
 279                         else if (node.isNodeType(SlcTypes.SLC_AGENT_FACTORY))
 280                                 return SlcImages.AGENT_FACTORY;
 281                         else
 282                                 return SlcImages.FOLDER;
 283                 }
 284
 285                 public String getToolTipText(Node node) throws RepositoryException {
 286                         if (node.isNodeType(NodeType.MIX_TITLE)
 287                                         && node.hasProperty(Property.JCR_DESCRIPTION))
 288                                 return node.getProperty(Property.JCR_DESCRIPTION).getString();
 289                         return super.getToolTipText(node);
 290                 }
 291
 292                 public String getColumnText(Object obj, int index) {
 293                         return getText(obj);
 294                 }
 295
 296                 public Image getColumnImage(Object obj, int index) {
 297                         return getImage(obj);
 298                 }
 299
 300         }
 301
 302         class ViewDoubleClickListener implements IDoubleClickListener {
 303                 public void doubleClick(DoubleClickEvent evt) {
 304                         Object obj = ((IStructuredSelection) evt.getSelection())
 305                                         .getFirstElement();
 306                         try {
 307                                 if (obj instanceof Node) {
 308                                         Node node = (Node) obj;
 309                                         if (node.isNodeType(SLC_EXECUTION_MODULE)) {
 310                                                 ClientUiPlugin.startStopExecutionModule(modulesManager,
 311                                                                 node);
 312                                         } else {
 313                                                 String path = node.getPath();
 314                                                 // TODO factorize with editor
 315                                                 QueryManager qm = node.getSession().getWorkspace()
 316                                                                 .getQueryManager();
 317                                                 String statement = "SELECT * FROM ["
 318                                                                 + SlcTypes.SLC_EXECUTION_FLOW
 319                                                                 + "] WHERE ISDESCENDANTNODE(['" + path
 320                                                                 + "']) OR ISSAMENODE(['" + path + "'])";
 321                                                 // log.debug(statement);
 322                                                 Query query = qm.createQuery(statement, Query.JCR_SQL2);
 323
 324                                                 // order paths
 325                                                 SortedSet<String> paths = new TreeSet<String>();
 326                                                 for (NodeIterator nit = query.execute().getNodes(); nit
 327                                                                 .hasNext();) {
 328                                                         paths.add(nit.nextNode().getPath());
 329                                                 }
 330
 331                                                 IWorkbenchPage activePage = PlatformUI.getWorkbench()
 332                                                                 .getActiveWorkbenchWindow().getActivePage();
 333                                                 activePage.openEditor(new ProcessEditorInput(
 334                                                                 new ArrayList<String>(paths), true),
 335                                                                 ProcessEditor.ID);
 336                                         }
 337                                 }
 338                         } catch (Exception e) {
 339                                 throw new SlcException("Cannot open " + obj, e);
 340                         }
 341                 }
 342
 343         }
 344
 345         /** Listen to drags */
 346         class ViewDragListener extends DragSourceAdapter {
 347                 public void dragSetData(DragSourceEvent event) {
 348                         IStructuredSelection selection = (IStructuredSelection) viewer
 349                                         .getSelection();
 350                         if (selection.getFirstElement() instanceof Node) {
 351                                 Node node = (Node) selection.getFirstElement();
 352                                 if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
 353                                         try {
 354                                                 event.data = node.getPath();
 355                                         } catch (RepositoryException e) {
 356                                                 throw new SlcException("Cannot read node", e);
 357                                         }
 358                                 }
 359                         }
 360                 }
 361         }
 362
 363         public void setSession(Session session) {
 364                 this.session = session;
 365         }
 366
 367         public void setModulesManager(ExecutionModulesManager modulesManager) {
 368                 this.modulesManager = modulesManager;
 369         }
 370
 371 }