/*******************************************************************************

  * Copyright (c) 2009,2010 SWTBot Committers 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:

  *     Ketan Patel - initial API and implementation (Bug 259860)

  *******************************************************************************/

 package org.eclipse.swtbot.swt.finder.matchers;

 import java.lang.reflect.InvocationTargetException;

 import java.util.ArrayList;

 import org.eclipse.swt.widgets.Item;

 import org.eclipse.swtbot.swt.finder.utils.SWTUtils;

 import org.hamcrest.Description;

 import org.hamcrest.Factory;

 import org.hamcrest.Matcher;

 /**

  * @author Ketan Patel (Bug 259860)

  * @version $Id$

  */

 public class WithItem<T extends Item> extends AbstractMatcher<T> {

         private final Matcher<?>        itemMatcher;

         private final ArrayList<T>        matches;

         /**

          * Matches widgets which contains <code>item(s)</code>, as returned by <code>getItems</code> method, that match

          * given matcher...i.e CTabFolder with Item with text "xyz"

          * 

          * @param itemMatcher the item matcher

          */

         WithItem(Matcher<?> itemMatcher) {

                 this.itemMatcher = itemMatcher;

                 matches = new ArrayList<T>();

         }

         public void describeTo(Description description) {

                 description.appendText("with item matching (");

                 this.itemMatcher.describeTo(description);

                 description.appendText(")");

         }

         protected boolean doMatch(Object obj) {

                 boolean result = false;

                 try {

                         for (T item : getItems(obj)) {

                                 if (this.itemMatcher.matches(item)) {

                                         this.matches.add(item);

                                         result = true;

                                 }

                         }

                 } catch (Exception e) {

                         // do nothing

                 }

                 return result;

         }

         @SuppressWarnings("unchecked")

         private T[] getItems(Object obj) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {

                 return (T[]) SWTUtils.invokeMethod(obj, "getItems");

         }

         public ArrayList<T> getAllMatches() {

                 return this.matches;

         }

         public T get(int index) {

                 return this.matches.get(index);

         }

         /**

          * Returns a matcher that matches objects containing an item that matches the matcher.

          * <p>

          * <strong>Note:</strong> This invokes getItems method on the object and expects to see an array as a return value.

          * </p>

          * 

          * @param matcher the matcher.

          * @return a matcher.

          */

         @Factory

         public static <T extends Item> WithItem<T> withItem(Matcher<?> matcher) {

                 return new WithItem<T>(matcher);

         }

 }