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