content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.filters;
  
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.resources.IStorage;
  import org.eclipse.core.runtime.IAdaptable;
  import org.eclipse.jface.viewers.Viewer;
  import org.eclipse.jface.viewers.ViewerFilter;
  import org.eclipse.ui.IWorkingSet;
  import org.eclipse.ui.model.IWorkbenchAdapter;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.internal.ui.util.StringMatcher;
  
  /**
   * The NamePatternFilter selects the elements which
   * match the given string patterns.
   * <p>
   * The following characters have special meaning:
   *   ? => any character
   *   * => any string
   * </p>
   * 
   * 
   */
  public class NamePatternFilter extends ViewerFilter {
  	private String[] fPatterns;
  	private StringMatcher[] fMatchers;
  	
  	/**
  	 * Return the currently configured StringMatchers.
  	 * @return returns the matchers
  	 */
  	private StringMatcher[] getMatchers() {
  		return fMatchers;
  	}
  	
  	/**
  	 * Gets the patterns for the receiver.
  	 * @return returns the patterns to be filtered for
  	 */
  	public String[] getPatterns() {
  		return fPatterns;
  	}
  	
  	
  	/* (non-Javadoc)
  	 * Method declared on ViewerFilter.
  	 */
  	public boolean select(Viewer viewer, Object parentElement, Object element) {
  		if (fMatchers.length == 0) {
  			return true;
  		}
  		String matchName= null;
  		if (element instanceof IJavaScriptElement) {
  			matchName= ((IJavaScriptElement) element).getElementName();
  		} else if (element instanceof IResource) {
  			matchName= ((IResource) element).getName();
  		}else if (element instanceof IStorage) {
  			matchName= ((IStorage) element).getName();
  		} else if (element instanceof IWorkingSet) {
  			matchName= ((IWorkingSet) element).getLabel();
  		} else if (element instanceof IAdaptable) {
  			IWorkbenchAdapter wbadapter= (IWorkbenchAdapter) ((IAdaptable)element).getAdapter(IWorkbenchAdapter.class);
  			if (wbadapter != null) {
  				matchName= wbadapter.getLabel(element);
  			}
  		}
  		if (matchName != null && matchName.length() > 0) {
  			StringMatcher[] testMatchers= getMatchers();
  			for (int i = 0; i < testMatchers.length; i++) {
  				if (testMatchers[i].match(matchName))
  					return false;
  			}
  			return true;
  		}
  		return true;
  	}
  	
  	/**
  	 * Sets the patterns to filter out for the receiver.
  	 * <p>
  	 * The following characters have special meaning:
  	 *   ? => any character
  	 *   * => any string
  	 * </p>
  	 * @param newPatterns the new patterns
  	 */
  	public void setPatterns(String[] newPatterns) {
  		fPatterns = newPatterns;
  		fMatchers = new StringMatcher[newPatterns.length];
  		for (int i = 0; i < newPatterns.length; i++) {
  			//Reset the matchers to prevent constructor overhead
  			fMatchers[i]= new StringMatcher(newPatterns[i], true, false);
  		}
  	}
  }
  