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 org.eclipse.jface.text.IDocument;
  10 import org.eclipse.jface.text.IRegion;
  11 import org.eclipse.jface.text.ITextViewer;
  12 import org.eclipse.jface.text.Region;
  13
  14 //import org.eclipse.jdt.core.ICompilationUnit;
  15 //import org.eclipse.jdt.core.JavaModelException;
  16
  17 //import org.eclipse.jdt.internal.corext.Assert;
  18 import net.sourceforge.phpdt.internal.corext.template.ContextType;
  19 import net.sourceforge.phpdt.internal.corext.template.Template;
  20 import net.sourceforge.phpdt.internal.corext.template.Templates;
  21 import net.sourceforge.phpdt.internal.corext.template.java.CompilationUnitContext;
  22 import net.sourceforge.phpdt.internal.corext.template.java.CompilationUnitContextType;
  23 //import org.eclipse.jdt.internal.ui.JavaPluginImages;
  24 import net.sourceforge.phpdt.internal.ui.text.java.IJavaCompletionProposal;
  25 //import org.eclipse.jdt.internal.ui.text.link.LinkedPositionManager;
  26
  27 public class TemplateEngine {
  28
  29         /** The context type. */
  30         private ContextType fContextType;
  31         /** The result proposals. */
  32         private ArrayList fProposals= new ArrayList();
  33
  34         /**
  35          * Creates the template engine for a particular context type.
  36          * See <code>TemplateContext</code> for supported context types.
  37          */
  38         public TemplateEngine(ContextType contextType) {
  39         //      Assert.isNotNull(contextType);
  40                 fContextType= contextType;
  41         }
  42
  43         /**
  44          * Empties the collector.
  45          *
  46          * @param viewer the text viewer
  47          * @param unit   the compilation unit (may be <code>null</code>)
  48          */
  49         public void reset() {
  50                 fProposals.clear();
  51         }
  52
  53         /**
  54          * Returns the array of matching templates.
  55          */
  56         public IJavaCompletionProposal[] getResults() {
  57                 return (IJavaCompletionProposal[]) fProposals.toArray(new IJavaCompletionProposal[fProposals.size()]);
  58         }
  59
  60         /**
  61          * Inspects the context of the compilation unit around <code>completionPosition</code>
  62          * and feeds the collector with proposals.
  63          * @param viewer the text viewer
  64          * @param completionPosition the context position in the document of the text viewer
  65          * @param compilationUnit the compilation unit (may be <code>null</code>)
  66          */
  67         public void complete(ITextViewer viewer, int completionPosition)
  68   //,ICompilationUnit compilationUnit)
  69         //hrows JavaModelException
  70         {
  71             IDocument document= viewer.getDocument();
  72
  73                 // prohibit recursion
  74 //              if (LinkedPositionManager.hasActiveManager(document))
  75 //                      return;
  76
  77                 if (!(fContextType instanceof CompilationUnitContextType))
  78                         return;
  79
  80                 ((CompilationUnitContextType) fContextType).setContextParameters(document, completionPosition);//mpilationUnit);
  81                 CompilationUnitContext context= (CompilationUnitContext) fContextType.createContext();
  82                 int start= context.getStart();
  83                 int end= context.getEnd();
  84                 IRegion region= new Region(start, end - start);
  85
  86                 Template[] templates= Templates.getInstance().getTemplates();
  87                 for (int i= 0; i != templates.length; i++)
  88                         if (context.canEvaluate(templates[i]))
  89                                 fProposals.add(new TemplateProposal(templates[i], context, region, viewer)); //luginImages.get(JavaPluginImages.IMG_OBJS_TEMPLATE)));
  90         }
  91
  92 }
  93