gerrit.simantics Code Review - simantics/sysdyn.git/blob

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
   3  * 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  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.jfreechart.chart.properties;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.Iterator;\r
  17 \r
  18 import org.eclipse.jface.fieldassist.ContentProposal;\r
  19 import org.eclipse.jface.fieldassist.IContentProposal;\r
  20 import org.eclipse.jface.fieldassist.IContentProposalProvider;\r
  21 import org.eclipse.swt.widgets.Control;\r
  22 import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
  23 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  24 import org.simantics.db.Resource;\r
  25 import org.simantics.db.exception.DatabaseException;\r
  26 import org.simantics.db.management.ISessionContext;\r
  27 import org.simantics.db.procedure.Listener;\r
  28 import org.simantics.ui.SimanticsUI;\r
  29 import org.simantics.utils.ui.AdaptionUtils;\r
  30 \r
  31 /**\r
  32  * \r
  33  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
  34  *\r
  35  */\r
  36 public class VariableProposalProvider implements IContentProposalProvider, Widget {\r
  37 \r
  38         /*\r
  39          * The proposals provided.\r
  40          */\r
  41         private Collection<ChartVariable> proposals;\r
  42 \r
  43         /*\r
  44          * The proposals mapped to IContentProposal. Cached for speed in the case\r
  45          * where filtering is not used.\r
  46          */\r
  47         private IContentProposal[] contentProposals;\r
  48 \r
  49         /*\r
  50          * Boolean that tracks whether filtering is used.\r
  51          */\r
  52         private boolean filterProposals = false;\r
  53 \r
  54 \r
  55         private boolean compareRVI = false;\r
  56         /**\r
  57          * Return an array of Objects representing the valid content proposals for a\r
  58          * field. \r
  59          * \r
  60          * @param contents\r
  61          *            the current contents of the field (only consulted if filtering\r
  62          *            is set to <code>true</code>)\r
  63          * @param position\r
  64          *            the current cursor position within the field (ignored)\r
  65          * @return the array of Objects that represent valid proposals for the field\r
  66          *         given its current content.\r
  67          */\r
  68         @SuppressWarnings("unchecked")\r
  69         public IContentProposal[] getProposals(String contents, int position) {\r
  70                 if (filterProposals) {\r
  71                         @SuppressWarnings("rawtypes")\r
  72             ArrayList list = new ArrayList();\r
  73                         if (compareRVI) {\r
  74                                 for (ChartVariable proposal : proposals) {\r
  75                                         if (proposal.getRvi().length() >= contents.length() && proposal.getRvi().substring(0, contents.length()).equalsIgnoreCase(contents)) {\r
  76                                                 if (proposal.getLabel() != null)\r
  77                                                         list.add(new ContentProposal(proposal.getRvi(),proposal.getLabel(), null));\r
  78                                                 else\r
  79                                                         list.add(new ContentProposal(proposal.getRvi()));\r
  80                                         } else if (proposal.getLabel() != null && proposal.getLabel().length() >= contents.length() && proposal.getLabel().substring(0, contents.length()).equalsIgnoreCase(contents)) {\r
  81                                                 list.add(new ContentProposal(proposal.getRvi(),proposal.getLabel(), null));\r
  82                                         }\r
  83                                 }\r
  84                         } else {\r
  85                                 for (ChartVariable proposal : proposals) {\r
  86                                         if (proposal.getLabel() != null && proposal.getLabel().length() >= contents.length() && proposal.getLabel().substring(0, contents.length()).equalsIgnoreCase(contents)) {\r
  87                                                 list.add(new ContentProposal(proposal.getRvi(),proposal.getLabel(), null));\r
  88                                         }\r
  89                                 }\r
  90                         }\r
  91                         \r
  92                         return (IContentProposal[]) list.toArray(new IContentProposal[list\r
  93                                         .size()]);\r
  94                 }\r
  95                 if (contentProposals == null) {\r
  96                         contentProposals = new IContentProposal[proposals.size()];\r
  97                         Iterator<ChartVariable> iter = proposals.iterator();\r
  98                         for (int i = 0; i < proposals.size(); i++) {\r
  99                                 ChartVariable proposal = iter.next();\r
 100                                 if (proposal.getLabel() != null)\r
 101                                         contentProposals[i] = new ContentProposal(proposal.getRvi(),proposal.getLabel(),null);\r
 102                                 else\r
 103                                         contentProposals[i] = new ContentProposal(proposal.getRvi());\r
 104                         }\r
 105                 }\r
 106                 return contentProposals;\r
 107         }\r
 108 \r
 109         /**\r
 110          * Set the Strings to be used as content proposals.\r
 111          * \r
 112          * @param items\r
 113          *            the array of Strings to be used as proposals.\r
 114          */\r
 115         public void setProposals(Collection<ChartVariable> items) {\r
 116                 this.proposals = items;\r
 117                 contentProposals = null;\r
 118         }\r
 119 \r
 120         /**\r
 121          * Set the boolean that controls whether proposals are filtered according to\r
 122          * the current field content.\r
 123          * \r
 124          * @param filterProposals\r
 125          *            <code>true</code> if the proposals should be filtered to\r
 126          *            show only those that match the current contents of the field,\r
 127          *            and <code>false</code> if the proposals should remain the\r
 128          *            same, ignoring the field content.\r
 129          * @since 3.3\r
 130          */\r
 131         public void setFiltering(boolean filterProposals) {\r
 132                 this.filterProposals = filterProposals;\r
 133                 // Clear any cached proposals.\r
 134                 contentProposals = null;\r
 135         }\r
 136         \r
 137     /**\r
 138      * Provides all variables a model contains. Given resource needs to be\r
 139      * part of a model (i.e. using PartOf leads eventually to a SysdynModel).\r
 140      *  \r
 141      * @param control Control that is using this provider\r
 142      * @param resource A resource that is part of a model\r
 143      */\r
 144     public VariableProposalProvider(final Control control, WidgetSupport support) {\r
 145         this.proposals = new ArrayList<ChartVariable>();\r
 146         support.register(this);\r
 147         this.control = control;\r
 148     }\r
 149 \r
 150     private Resource resource;\r
 151     private Control control;\r
 152     \r
 153     @Override\r
 154     public void setInput(ISessionContext context, Object input) {\r
 155 \r
 156         final Resource resource = AdaptionUtils.adaptToSingle(input, Resource.class);\r
 157         if(resource == null)\r
 158             return;\r
 159         this.resource = resource;\r
 160         /* Find the model resource. It can be found with PartOf \r
 161         relations from series resource in a chart */\r
 162        try {\r
 163                 AllVariablesOfModel query = AllVariablesOfModel.withRandomResource(context, resource);\r
 164                  SimanticsUI.getSession().asyncRequest(query\r
 165                 , new Listener<Collection<ChartVariable>>() {\r
 166 \r
 167                     @Override\r
 168                     public void execute(Collection<ChartVariable> result) {\r
 169                         setProposals(result);\r
 170                     }\r
 171 \r
 172                     @Override\r
 173                     public void exception(Throwable t) {\r
 174                         t.printStackTrace();\r
 175                     }\r
 176 \r
 177                     @Override\r
 178                     public boolean isDisposed() {\r
 179                         return control == null || \r
 180                                 control.isDisposed() || \r
 181                                 !resource.equals(VariableProposalProvider.this.resource);\r
 182                     }\r
 183 \r
 184                 }); \r
 185         } catch (DatabaseException e) {\r
 186                 // TODO Auto-generated catch block\r
 187                 e.printStackTrace();\r
 188         }\r
 189         \r
 190        \r
 191         \r
 192     }\r
 193     \r
 194 }\r