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
  11 import org.eclipse.jface.text.source.IAnnotationModel;
  12
  13
  14 /**
  15  * Filters problems based on their types.
  16  */
  17 public class ProblemAnnotationIterator implements Iterator {
  18
  19         private Iterator fIterator;
  20         private IProblemAnnotation fNext;
  21         private boolean fSkipIrrelevants;
  22
  23         public ProblemAnnotationIterator(IAnnotationModel model, boolean skipIrrelevants) {
  24                 fIterator= model.getAnnotationIterator();
  25                 fSkipIrrelevants= skipIrrelevants;
  26                 skip();
  27         }
  28
  29         private void skip() {
  30                 while (fIterator.hasNext()) {
  31                         Object next= fIterator.next();
  32                         if (next instanceof IProblemAnnotation) {
  33                                 IProblemAnnotation a= (IProblemAnnotation) next;
  34                                 if (fSkipIrrelevants) {
  35                                         if (a.isRelevant()) {
  36                                                 fNext= a;
  37                                                 return;
  38                                         }
  39                                 } else {
  40                                         fNext= a;
  41                                         return;
  42                                 }
  43                         }
  44                 }
  45                 fNext= null;
  46         }
  47
  48         /*
  49          * @see Iterator#hasNext()
  50          */
  51         public boolean hasNext() {
  52                 return fNext != null;
  53         }
  54
  55         /*
  56          * @see Iterator#next()
  57          */
  58         public Object next() {
  59                 try {
  60                         return fNext;
  61                 } finally {
  62                         skip();
  63                 }
  64         }
  65
  66         /*
  67          * @see Iterator#remove()
  68          */
  69         public void remove() {
  70                 throw new UnsupportedOperationException();
  71         }
  72 }