net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/template/TemplateEngine.java

   1 /*
   2  * (c) Copyright IBM Corp. 2000, 2001.
   3  * All Rights Reserved.
   4  */
   5 package net.sourceforge.phpdt.internal.ui.text.template;
   6
   7 import java.util.ArrayList;
   8
   9 import net.sourceforge.phpdt.internal.corext.template.ContextType;
  10 import net.sourceforge.phpdt.internal.corext.template.DocumentTemplateContext;
  11 import net.sourceforge.phpdt.internal.corext.template.Template;
  12 import net.sourceforge.phpdt.internal.corext.template.Templates;
  13 import net.sourceforge.phpdt.internal.corext.template.php.CompilationUnitContextType;
  14 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
  15 import net.sourceforge.phpdt.internal.ui.text.java.IPHPCompletionProposal;
  16
  17 import org.eclipse.jface.text.IDocument;
  18 import org.eclipse.jface.text.IRegion;
  19 import org.eclipse.jface.text.ITextViewer;
  20 import org.eclipse.jface.text.Region;
  21 //import org.eclipse.jdt.internal.ui.text.link.LinkedPositionManager;
  22
  23 public class TemplateEngine {
  24
  25         /** The context type. */
  26         private ContextType fContextType;
  27         /** The result proposals. */
  28         private ArrayList fProposals= new ArrayList();
  29
  30         /**
  31          * Creates the template engine for a particular context type.
  32          * See <code>TemplateContext</code> for supported context types.
  33          */
  34         public TemplateEngine(ContextType contextType) {
  35         //      Assert.isNotNull(contextType);
  36                 fContextType= contextType;
  37         }
  38
  39         /**
  40          * Empties the collector.
  41          *
  42          * @param viewer the text viewer
  43          * @param unit   the compilation unit (may be <code>null</code>)
  44          */
  45         public void reset() {
  46                 fProposals.clear();
  47         }
  48
  49         /**
  50          * Returns the array of matching templates.
  51          */
  52         public IPHPCompletionProposal[] getResults() {
  53                 return (IPHPCompletionProposal[]) fProposals.toArray(new IPHPCompletionProposal[fProposals.size()]);
  54         }
  55
  56         /**
  57          * Inspects the context of the compilation unit around <code>completionPosition</code>
  58          * and feeds the collector with proposals.
  59          * @param viewer the text viewer
  60          * @param completionPosition the context position in the document of the text viewer
  61          * @param compilationUnit the compilation unit (may be <code>null</code>)
  62          */
  63         public void complete(ITextViewer viewer, int completionPosition)
  64   //,ICompilationUnit compilationUnit)
  65         //hrows JavaModelException
  66         {
  67             IDocument document= viewer.getDocument();
  68
  69                 // prohibit recursion
  70 //              if (LinkedPositionManager.hasActiveManager(document))
  71 //                      return;
  72
  73                 if (!(fContextType instanceof CompilationUnitContextType))
  74                         return;
  75
  76                 ((CompilationUnitContextType) fContextType).setContextParameters(document, completionPosition);//mpilationUnit);
  77                 DocumentTemplateContext context= (DocumentTemplateContext) fContextType.createContext();
  78                 int start= context.getStart();
  79                 int end= context.getEnd();
  80                 IRegion region= new Region(start, end - start);
  81
  82                 Template[] templates= Templates.getInstance().getTemplates();
  83                 for (int i= 0; i != templates.length; i++)
  84                         if (context.canEvaluate(templates[i]))
  85                                 fProposals.add(new TemplateProposal(templates[i], context, region, viewer, PHPUiImages.get(PHPUiImages.IMG_OBJS_TEMPLATE)));
  86         }
  87
  88 }
  89