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 match the given string
  23  * patterns.
  24  * <p>
  25  * The following characters have special meaning: ? => any character * => any
  26  * string
  27  * </p>
  28  *
  29  * @since 2.0
  30  */
  31 public class NamePatternFilter extends ViewerFilter {
  32         private String[] fPatterns;
  33
  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) Method declared on ViewerFilter.
  52          */
  53         public boolean select(Viewer viewer, Object parentElement, Object element) {
  54                 String matchName = null;
  55                 if (element instanceof IJavaElement) {
  56                         matchName = ((IJavaElement) element).getElementName();
  57                 } else if (element instanceof IAdaptable) {
  58                         IAdaptable adaptable = (IAdaptable) element;
  59                         IJavaElement javaElement = (IJavaElement) adaptable
  60                                         .getAdapter(IJavaElement.class);
  61                         if (javaElement != null)
  62                                 matchName = javaElement.getElementName();
  63                         else {
  64                                 IResource resource = (IResource) adaptable
  65                                                 .getAdapter(IResource.class);
  66                                 if (resource != null)
  67                                         matchName = resource.getName();
  68                         }
  69                 }
  70                 if (matchName != null) {
  71                         StringMatcher[] testMatchers = getMatchers();
  72                         for (int i = 0; i < testMatchers.length; i++) {
  73                                 if (testMatchers[i].match(matchName))
  74                                         return false;
  75                         }
  76                         return true;
  77                 }
  78                 return true;
  79         }
  80
  81         /**
  82          * Sets the patterns to filter out for the receiver.
  83          * <p>
  84          * The following characters have special meaning: ? => 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 }