/*
* Created on Oct 24, 2007
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* Copyright @2007-2013 the original author or authors.
*/
package org.fest.swing.hierarchy;
import static org.fest.util.Lists.emptyList;
import static org.fest.util.Lists.newArrayList;
import java.awt.Component;
import java.awt.Container;
import java.util.Collection;
import java.util.List;
import javax.annotation.Nonnull;
import org.fest.swing.annotation.RunsInCurrentThread;
import org.fest.util.VisibleForTesting;
/**
* Find children {@code Component}s in an AWT or Swing {@code Container}.
*
* @author Yvonne Wang
* @author Alex Ruiz
*/
class ChildrenFinder {
private static List<ChildrenFinderStrategy> strategies = newArrayList(new JDesktopPaneChildrenFinder(),
new JMenuChildrenFinder(), new WindowChildrenFinder());
@RunsInCurrentThread
@Nonnull Collection<Component> childrenOf(@Nonnull Component c) {
if (!(c instanceof Container)) {
return emptyList();
}
Container container = (Container) c;
List<Component> children = newArrayList(container.getComponents());
children.addAll(nonExplicitChildrenOf(container));
return children;
}
private @Nonnull Collection<Component> nonExplicitChildrenOf(@Nonnull Container c) {
Collection<Component> children = newArrayList();
for (ChildrenFinderStrategy s : strategies) {
children.addAll(s.nonExplicitChildrenOf(c));
}
return children;
}
@VisibleForTesting
static @Nonnull List<ChildrenFinderStrategy> strategies() {
return newArrayList(strategies);
}
@VisibleForTesting
static void replaceStrategiesWith(@Nonnull List<ChildrenFinderStrategy> newStrategies) {
strategies = newArrayList(newStrategies);
}
}