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