bundles/org.simantics.diagram/src/org/simantics/diagram/handler/TerminalConnectionDirectionsMenuContribution.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2013 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.diagram.handler;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.Collections;\r
  17 import java.util.List;\r
  18 \r
  19 import org.eclipse.jface.action.Action;\r
  20 import org.eclipse.jface.action.ContributionItem;\r
  21 import org.eclipse.jface.action.IContributionItem;\r
  22 import org.eclipse.swt.SWT;\r
  23 import org.eclipse.swt.events.SelectionEvent;\r
  24 import org.eclipse.swt.events.SelectionListener;\r
  25 import org.eclipse.swt.widgets.Menu;\r
  26 import org.eclipse.swt.widgets.MenuItem;\r
  27 import org.simantics.databoard.Bindings;\r
  28 import org.simantics.db.ReadGraph;\r
  29 import org.simantics.db.Resource;\r
  30 import org.simantics.db.Session;\r
  31 import org.simantics.db.WriteGraph;\r
  32 import org.simantics.db.common.request.WriteRequest;\r
  33 import org.simantics.db.exception.DatabaseException;\r
  34 import org.simantics.diagram.stubs.DiagramResource;\r
  35 import org.simantics.ui.contribution.DynamicMenuContribution;\r
  36 import org.simantics.utils.datastructures.Callback;\r
  37 import org.simantics.utils.ui.AdaptionUtils;\r
  38 import org.simantics.utils.ui.ExceptionUtils;\r
  39 \r
  40 /**\r
  41  * @author Tuukka Lehtonen\r
  42  */\r
  43 public class TerminalConnectionDirectionsMenuContribution extends DynamicMenuContribution {\r
  44 \r
  45         private static final IContributionItem[] NONE = {};\r
  46 \r
  47         private static final int[] DIRECTION_MASK = { 8, 4, 1, 2 };\r
  48         private static final String[] DIRECTION_NAME = { "Up", "Left", "Right", "Down" };\r
  49 \r
  50         @Override\r
  51         protected IContributionItem[] getContributionItems(ReadGraph graph, Object[] selection) throws DatabaseException {\r
  52                 return getTerminalDirectionItems(graph, selection).toArray(NONE);\r
  53         }\r
  54 \r
  55         public static Collection<IContributionItem> getTerminalDirectionItems(ReadGraph graph, Object[] selection) throws DatabaseException {\r
  56                 DiagramResource DIA = DiagramResource.getInstance(graph);\r
  57 \r
  58                 final List<Resource> terminals = new ArrayList<Resource>();\r
  59                 for (Object s : selection) {\r
  60                         Resource connection = AdaptionUtils.adaptToSingle(s, Resource.class);\r
  61                         if (connection == null || !graph.isInstanceOf(connection, DIA.Terminal))\r
  62                                 return Collections.emptyList();\r
  63                         terminals.add(connection);\r
  64                 }\r
  65                 if (terminals.isEmpty())\r
  66                         return Collections.emptyList();\r
  67 \r
  68                 int jointMask = 0;\r
  69                 for (Resource terminal : terminals) {\r
  70                         Integer dirs = graph.getPossibleRelatedValue(terminal, DIA.Terminal_AllowedDirections, Bindings.INTEGER);\r
  71                         int mask = dirs == null ? 0 : dirs;\r
  72                         jointMask |= mask;\r
  73                 }\r
  74 \r
  75                 final List<ToggleDirectionAction> actions = new ArrayList<ToggleDirectionAction>(4);\r
  76                 for (int i = 0; i < DIRECTION_NAME.length; ++i) {\r
  77                         String name = DIRECTION_NAME[i];\r
  78                         int mask = DIRECTION_MASK[i];\r
  79                         boolean wasChecked = (jointMask & mask) != 0;\r
  80                         int orMask = wasChecked ? 0 : mask;\r
  81                         int andMask = wasChecked ? ~mask : 0xffffffff;\r
  82                         ToggleDirectionAction action = new ToggleDirectionAction(graph.getSession(), terminals, orMask, andMask, name);\r
  83                         action.setChecked(wasChecked);\r
  84                         actions.add(action);\r
  85                 }\r
  86 \r
  87                 return Collections.<IContributionItem>singleton(\r
  88                                 new ContributionItem() {\r
  89                                         @Override\r
  90                                         public void fill(Menu menu, int index) {\r
  91                                                 MenuItem directions = new MenuItem(menu, SWT.CASCADE, index);\r
  92                                                 directions.setText("Allowed Routing Directions");\r
  93 \r
  94                                                 Menu subMenu = new Menu(menu);\r
  95                                                 directions.setMenu(subMenu);\r
  96 \r
  97                                                 for (ToggleDirectionAction a : actions) {\r
  98                                                         MenuItem item = new MenuItem(subMenu, SWT.CHECK);\r
  99                                                         item.setText(a.getText());\r
 100                                                         item.addSelectionListener(a);\r
 101                                                         item.setSelection(a.isChecked());\r
 102                                                 }\r
 103                                         }\r
 104                                 }\r
 105                                 );\r
 106         }\r
 107 \r
 108         static class ToggleDirectionAction extends Action implements SelectionListener {\r
 109 \r
 110                 Session session;\r
 111                 Collection<Resource> terminals;\r
 112                 int orMask;\r
 113                 int andMask;\r
 114 \r
 115                 public ToggleDirectionAction(Session session,\r
 116                                 List<Resource> terminals, int orMask, int andMask,\r
 117                                 String name) {\r
 118                         super(name, Action.AS_CHECK_BOX);\r
 119                         this.session = session;\r
 120                         this.terminals = terminals;\r
 121                         this.orMask = orMask;\r
 122                         this.andMask = andMask;\r
 123                 }\r
 124 \r
 125                 @Override\r
 126                 public void run() {\r
 127                         session.asyncRequest(new WriteRequest() {\r
 128                                 @Override\r
 129                                 public void perform(WriteGraph graph) throws DatabaseException {\r
 130                                         DiagramResource DIA = DiagramResource.getInstance(graph);\r
 131                                         for (Resource terminal : terminals) {\r
 132                                                 Integer dirs = graph.getPossibleRelatedValue(terminal, DIA.Terminal_AllowedDirections, Bindings.INTEGER);\r
 133                                                 int mask = dirs == null ? 0 : dirs;\r
 134                                                 mask &= andMask;\r
 135                                                 mask |= orMask;\r
 136                                                 graph.claimLiteral(terminal, DIA.Terminal_AllowedDirections, mask, Bindings.INTEGER);\r
 137                                         }\r
 138                                 }\r
 139                         }, new Callback<DatabaseException>() {\r
 140                                 @Override\r
 141                                 public void run(DatabaseException parameter) {\r
 142                                         if (parameter != null)\r
 143                                                 ExceptionUtils.logError(parameter);\r
 144                                 }\r
 145                         });\r
 146                 }\r
 147 \r
 148                 @Override\r
 149                 public void widgetDefaultSelected(SelectionEvent e) {\r
 150                         widgetSelected(e);\r
 151                 }\r
 152 \r
 153                 @Override\r
 154                 public void widgetSelected(SelectionEvent e) {\r
 155                         run();\r
 156                 }\r
 157 \r
 158         }\r
 159 \r
 160 }\r