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 org.eclipse.core.resources.IResource;
  14 import org.eclipse.core.runtime.IAdaptable;
  15
  16 import org.eclipse.jface.viewers.Viewer;
  17 import org.eclipse.jface.viewers.ViewerFilter;
  18
  19 import net.sourceforge.phpdt.core.IJavaElement;
  20
  21 import net.sourceforge.phpdt.internal.ui.util.StringMatcher;
  22
  23 /**
  24  * The NamePatternFilter selects the elements which
  25  * match the given string patterns.
  26  * <p>
  27  * The following characters have special meaning:
  28  *   ? => any character
  29  *   * => any string
  30  * </p>
  31  *
  32  * @since 2.0
  33  */
  34 public class NamePatternFilter extends ViewerFilter {
  35         private String[] fPatterns;
  36         private StringMatcher[] fMatchers;
  37
  38         /**
  39          * Return the currently configured StringMatchers.
  40          */
  41         private StringMatcher[] getMatchers() {
  42                 return fMatchers;
  43         }
  44
  45         /**
  46          * Gets the patterns for the receiver.
  47          */
  48         public String[] getPatterns() {
  49                 return fPatterns;
  50         }
  51
  52
  53         /* (non-Javadoc)
  54          * Method declared on ViewerFilter.
  55          */
  56         public boolean select(Viewer viewer, Object parentElement, Object element) {
  57                 String matchName= null;
  58                 if (element instanceof IJavaElement) {
  59                         matchName= ((IJavaElement) element).getElementName();
  60                 } else if (element instanceof IAdaptable) {
  61                         IAdaptable adaptable= (IAdaptable) element;
  62                         IJavaElement javaElement= (IJavaElement)adaptable.getAdapter(IJavaElement.class);
  63                         if (javaElement != null)
  64                                 matchName= javaElement.getElementName();
  65                         else {
  66                                 IResource resource= (IResource)adaptable.getAdapter(IResource.class);
  67                                 if (resource != null)
  68                                         matchName= resource.getName();
  69                         }
  70                 }
  71                 if (matchName != null) {
  72                         StringMatcher[] testMatchers= getMatchers();
  73                         for (int i = 0; i < testMatchers.length; i++) {
  74                                 if (testMatchers[i].match(matchName))
  75                                         return false;
  76                         }
  77                         return true;
  78                 }
  79                 return true;
  80         }
  81
  82         /**
  83          * Sets the patterns to filter out for the receiver.
  84          * <p>
  85          * The following characters have special meaning:
  86          *   ? => any character
  87          *   * => any string
  88          * </p>
  89          */
  90         public void setPatterns(String[] newPatterns) {
  91                 fPatterns = newPatterns;
  92                 fMatchers = new StringMatcher[newPatterns.length];
  93                 for (int i = 0; i < newPatterns.length; i++) {
  94                         //Reset the matchers to prevent constructor overhead
  95                         fMatchers[i]= new StringMatcher(newPatterns[i], true, false);
  96                 }
  97         }
  98 }