bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/ExplorerDynamicMenuContribution.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.actions;
  13
  14 import org.eclipse.core.runtime.Platform;
  15 import org.eclipse.jface.action.Action;
  16 import org.eclipse.jface.action.ActionContributionItem;
  17 import org.eclipse.jface.action.IContributionItem;
  18 import org.eclipse.jface.resource.ImageDescriptor;
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.ui.contribution.DynamicMenuContribution;
  23 import org.simantics.utils.ui.BundleUtils;
  24
  25
  26 /**
  27  * @author Antti Villberg
  28  */
  29 abstract public class ExplorerDynamicMenuContribution<T> extends DynamicMenuContribution {
  30
  31         private static final IContributionItem[] NONE = {};
  32
  33         @Override
  34         protected IContributionItem[] getContributionItems(ReadGraph graph, Object[] selection) throws DatabaseException {
  35
  36                 T input = computeInput(graph, selection);
  37
  38                 if(input == null) return NONE;
  39
  40                 return new IContributionItem[] {
  41                                 new ActionContributionItem(new Helper(graph, input))
  42                 };
  43
  44         }
  45
  46         public class Helper extends Action {
  47
  48                 private final T input;
  49                 protected final Session        session;
  50
  51                 public Helper(ReadGraph graph, T input) throws DatabaseException {
  52                         super(getName(graph, input), getImage(graph, input));
  53                         this.session = graph.getSession();
  54                         this.input = input;
  55                 }
  56
  57                 @Override
  58                 public void run() {
  59                         perform(session, input);
  60                 }
  61
  62         }
  63
  64         protected ImageDescriptor silk(String name) {
  65                 return BundleUtils.getImageDescriptorFromBundle(Platform.getBundle("com.famfamfam.silk"), "/icons/" + name);
  66         }
  67
  68         abstract protected T computeInput(ReadGraph graph, Object[] selection) throws DatabaseException;
  69         abstract protected void perform(Session session, T input);
  70         abstract protected String getName(ReadGraph graph, T input) throws DatabaseException ;
  71         abstract protected ImageDescriptor getImage(ReadGraph graph, T input) throws DatabaseException;
  72
  73 }