bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/assist/SCLContentProposalProvider.java

   1 package org.simantics.scl.ui.assist;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.List;\r
   5 import java.util.Map;\r
   6 \r
   7 import org.eclipse.jface.fieldassist.IContentProposal;\r
   8 import org.eclipse.jface.fieldassist.IContentProposalProvider;\r
   9 import org.simantics.scl.compiler.commands.CommandSession;\r
  10 import org.simantics.scl.compiler.elaboration.modules.SCLValue;\r
  11 import org.simantics.scl.compiler.environment.Environments;\r
  12 import org.simantics.scl.compiler.types.Type;\r
  13 \r
  14 \r
  15 public class SCLContentProposalProvider implements IContentProposalProvider {\r
  16 \r
  17     private final CommandSession session;\r
  18 \r
  19     public SCLContentProposalProvider(CommandSession session) {\r
  20         this.session = session;\r
  21     }\r
  22 \r
  23     @Override\r
  24     public IContentProposal[] getProposals(String contents, int position) {\r
  25         int startPos = getPrefixStartPos(contents, position);\r
  26         String prefix = contents.substring(startPos, position);\r
  27         int prefixLength = prefix.length();\r
  28         int namespaceLength = prefix.indexOf('.');\r
  29         if(namespaceLength < 0)\r
  30             namespaceLength = 0;\r
  31         else\r
  32             ++namespaceLength;\r
  33         \r
  34         List<SCLValue> values = Environments.findValuesForPrefix(\r
  35                 session.getRuntimeEnvironment().getEnvironment(),\r
  36                 prefix);\r
  37         \r
  38         ArrayList<IContentProposal> proposals = new ArrayList<IContentProposal>();\r
  39         for(SCLValue value : values)\r
  40             if(!value.isPrivate() && !(value.getName().name.contains("$") &&\r
  41                     Character.isLetter(value.getName().name.charAt(0))))\r
  42                 proposals.add(new SCLContentProposal(value));\r
  43         \r
  44         prefix = prefix.toLowerCase();\r
  45         for(Map.Entry<String,Type> entry : session.localNamesForContentProposals().entrySet())\r
  46             if(entry.getKey().toLowerCase().startsWith(prefix))\r
  47                 proposals.add(new SCLContentProposal(entry.getKey(), "LocalEnvironment", entry.getValue()));\r
  48         \r
  49         return proposals.toArray(new IContentProposal[proposals.size()]);\r
  50     }\r
  51     \r
  52     private static int getPrefixStartPos(String contents, int position) {\r
  53         int pos = position;\r
  54         while(pos > 0) {\r
  55             char c = contents.charAt(pos-1);\r
  56             if(Character.isJavaIdentifierPart(c) || c == '.')\r
  57                 --pos;\r
  58             else\r
  59                 break;\r
  60         }\r
  61         return pos;\r
  62     }\r
  63 }