bundles/org.simantics.debug.ui/src/org/simantics/debug/ui/ShowInBrowser.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.debug.ui;
  13
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.Deque;
  17 import java.util.LinkedList;
  18
  19 import org.eclipse.core.commands.AbstractHandler;
  20 import org.eclipse.core.commands.ExecutionEvent;
  21 import org.eclipse.core.commands.ExecutionException;
  22 import org.eclipse.jface.viewers.ISelection;
  23 import org.eclipse.ui.IViewPart;
  24 import org.eclipse.ui.IWorkbenchPage;
  25 import org.eclipse.ui.PartInitException;
  26 import org.eclipse.ui.handlers.HandlerUtil;
  27 import org.simantics.Simantics;
  28 import org.simantics.browsing.ui.GraphExplorer;
  29 import org.simantics.browsing.ui.NodeContext;
  30 import org.simantics.browsing.ui.common.NodeContextBuilder;
  31 import org.simantics.browsing.ui.model.browsecontexts.BrowseContext;
  32 import org.simantics.browsing.ui.model.nodetypes.EntityNodeType;
  33 import org.simantics.browsing.ui.model.nodetypes.NodeType;
  34 import org.simantics.db.ReadGraph;
  35 import org.simantics.db.Resource;
  36 import org.simantics.db.common.request.UniqueRead;
  37 import org.simantics.db.exception.DatabaseException;
  38 import org.simantics.db.request.Read;
  39 import org.simantics.ui.selection.WorkbenchSelectionUtils;
  40 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  41
  42 /**
  43  * @author Antti Villberg
  44  * @author Tuukka Lehtonen
  45  */
  46 public class ShowInBrowser extends AbstractHandler {
  47
  48         private static final String DEFAULT_BROWSER_VIEW_ID = "org.simantics.modeling.ui.browser"; //$NON-NLS-1$
  49
  50         private static Read<Collection<NodeContext>> getParentsRequest(BrowseContext bc, NodeContext context) {
  51                 return new UniqueRead<Collection<NodeContext>>() {
  52                         @Override
  53                         public Collection<NodeContext> perform(ReadGraph graph) throws DatabaseException {
  54                                 return bc.getParents(graph, context);
  55                         }
  56                 };
  57         }
  58
  59         private static Read<NodeType> getNodeTypeRequest(Resource element) {
  60                 return new UniqueRead<NodeType>() {
  61                         @Override
  62                         public NodeType perform(ReadGraph graph) throws DatabaseException {
  63                                 return EntityNodeType.getNodeTypeFor(graph, element);
  64                         }
  65                 };
  66         }
  67
  68         private static Collection<NodeContext> tryGetParents(BrowseContext bc, NodeContext context) {
  69                 try {
  70                         return Simantics.getSession().syncRequest(getParentsRequest(bc, context));
  71                 } catch (DatabaseException e) {
  72                         return Collections.emptyList();
  73                 }
  74         }
  75
  76         private static boolean show(GraphExplorer explorer, BrowseContext browseContext, NodeContext context, Deque<NodeContext> path) {
  77                 if (explorer.isVisible(context))
  78                         return explorer.selectPath(path);
  79                 else {
  80                         for (NodeContext parent : tryGetParents(browseContext, context)) {
  81                                 path.addFirst(parent);
  82                                 if (show(explorer, browseContext, parent, path))
  83                                         return true;
  84                                 path.removeFirst();
  85                         }
  86                 }
  87                 return false;
  88         }
  89
  90         public static Object defaultExecute(ISelection selection, String browserViewId) {
  91                 IViewPart browser = (IViewPart) WorkbenchUtils.findView(browserViewId);
  92                 if (browser == null)
  93                         return null;
  94
  95                 GraphExplorer explorer = (GraphExplorer) browser.getAdapter(GraphExplorer.class);
  96                 BrowseContext browseContext = (BrowseContext) browser.getAdapter(BrowseContext.class);
  97                 if (explorer == null || browseContext == null)
  98                         return null;
  99
 100                 try {
 101                         final Resource element = WorkbenchSelectionUtils.getPossibleResource(selection);
 102                         WorkbenchUtils.showView(browserViewId, IWorkbenchPage.VIEW_VISIBLE);
 103                         NodeType nodeType = Simantics.getSession().syncRequest(getNodeTypeRequest(element));;
 104                         NodeContext context = NodeContextBuilder.buildWithData(NodeType.KEY_SEQUENCE, new Object[] { element, nodeType });
 105                         Deque<NodeContext> path = new LinkedList<>();
 106                         path.add(context);
 107                         if (show(explorer, browseContext, context, path)) {
 108                                 WorkbenchUtils.activateView(browserViewId);
 109                         }
 110                 } catch (DatabaseException e) {
 111                 } catch (PartInitException e) {
 112                 }
 113
 114                 return null;
 115         }
 116
 117         public static Object defaultExecute(ISelection selection) {
 118                 return defaultExecute(selection, DEFAULT_BROWSER_VIEW_ID);
 119         }
 120
 121         @Override
 122         public Object execute(ExecutionEvent event) throws ExecutionException {
 123                 return defaultExecute(HandlerUtil.getCurrentSelectionChecked(event));
 124         }
 125
 126 }