net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/ProblemAnnotationIterator.java

   1 package net.sourceforge.phpeclipse.phpeditor;
   2
   3 /*
   4  * (c) Copyright IBM Corp. 2000, 2001.
   5  * All Rights Reserved.
   6  */
   7
   8
   9 import java.util.Iterator;
  10 import org.eclipse.jface.text.source.IAnnotationModel;
  11
  12
  13 /**
  14  * Filters problems based on their types.
  15  */
  16 public class ProblemAnnotationIterator implements Iterator {
  17
  18         private Iterator fIterator;
  19         private IProblemAnnotation fNext;
  20         private boolean fSkipIrrelevants;
  21
  22         public ProblemAnnotationIterator(IAnnotationModel model, boolean skipIrrelevants) {
  23                 fIterator= model.getAnnotationIterator();
  24                 fSkipIrrelevants= skipIrrelevants;
  25                 skip();
  26         }
  27
  28         private void skip() {
  29                 while (fIterator.hasNext()) {
  30                         Object next= fIterator.next();
  31                         if (next instanceof IProblemAnnotation) {
  32                                 IProblemAnnotation a= (IProblemAnnotation) next;
  33                                 if (fSkipIrrelevants) {
  34                                         if (a.isRelevant()) {
  35                                                 fNext= a;
  36                                                 return;
  37                                         }
  38                                 } else {
  39                                         fNext= a;
  40                                         return;
  41                                 }
  42                         }
  43                 }
  44                 fNext= null;
  45         }
  46
  47         /*
  48          * @see Iterator#hasNext()
  49          */
  50         public boolean hasNext() {
  51                 return fNext != null;
  52         }
  53
  54         /*
  55          * @see Iterator#next()
  56          */
  57         public Object next() {
  58                 try {
  59                         return fNext;
  60                 } finally {
  61                         skip();
  62                 }
  63         }
  64
  65         /*
  66          * @see Iterator#remove()
  67          */
  68         public void remove() {
  69                 throw new UnsupportedOperationException();
  70         }
  71 }