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

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