net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/filters/NamePatternFilter.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.ui.filters;
  12
  13 import net.sourceforge.phpdt.core.IJavaElement;
  14 import net.sourceforge.phpdt.internal.ui.util.StringMatcher;
  15
  16 import org.eclipse.core.resources.IResource;
  17 import org.eclipse.core.runtime.IAdaptable;
  18 import org.eclipse.jface.viewers.Viewer;
  19 import org.eclipse.jface.viewers.ViewerFilter;
  20
  21 /**
  22  * The NamePatternFilter selects the elements which
  23  * match the given string patterns.
  24  * <p>
  25  * The following characters have special meaning:
  26  *   ? => any character
  27  *   * => any string
  28  * </p>
  29  *
  30  * @since 2.0
  31  */
  32 public class NamePatternFilter extends ViewerFilter {
  33         private String[] fPatterns;
  34         private StringMatcher[] fMatchers;
  35
  36         /**
  37          * Return the currently configured StringMatchers.
  38          */
  39         private StringMatcher[] getMatchers() {
  40                 return fMatchers;
  41         }
  42
  43         /**
  44          * Gets the patterns for the receiver.
  45          */
  46         public String[] getPatterns() {
  47                 return fPatterns;
  48         }
  49
  50
  51         /* (non-Javadoc)
  52          * Method declared on ViewerFilter.
  53          */
  54         public boolean select(Viewer viewer, Object parentElement, Object element) {
  55                 String matchName= null;
  56                 if (element instanceof IJavaElement) {
  57                         matchName= ((IJavaElement) element).getElementName();
  58                 } else if (element instanceof IAdaptable) {
  59                         IAdaptable adaptable= (IAdaptable) element;
  60                         IJavaElement javaElement= (IJavaElement)adaptable.getAdapter(IJavaElement.class);
  61                         if (javaElement != null)
  62                                 matchName= javaElement.getElementName();
  63                         else {
  64                                 IResource resource= (IResource)adaptable.getAdapter(IResource.class);
  65                                 if (resource != null)
  66                                         matchName= resource.getName();
  67                         }
  68                 }
  69                 if (matchName != null) {
  70                         StringMatcher[] testMatchers= getMatchers();
  71                         for (int i = 0; i < testMatchers.length; i++) {
  72                                 if (testMatchers[i].match(matchName))
  73                                         return false;
  74                         }
  75                         return true;
  76                 }
  77                 return true;
  78         }
  79
  80         /**
  81          * Sets the patterns to filter out for the receiver.
  82          * <p>
  83          * The following characters have special meaning:
  84          *   ? => any character
  85          *   * => any string
  86          * </p>
  87          */
  88         public void setPatterns(String[] newPatterns) {
  89                 fPatterns = newPatterns;
  90                 fMatchers = new StringMatcher[newPatterns.length];
  91                 for (int i = 0; i < newPatterns.length; i++) {
  92                         //Reset the matchers to prevent constructor overhead
  93                         fMatchers[i]= new StringMatcher(newPatterns[i], true, false);
  94                 }
  95         }
  96 }