/**
* Copyright 2008 Google Inc.
*
* 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.
*
*/
package org.waveprotocol.wave.client.scheduler;
import com.google.gwt.user.client.Command;
import java.util.LinkedList;
import java.util.List;
/**
* Basic command queue that queues up commands and runs them all in
* {@link #execute()}.
*
*/
public class BufferedCommandQueue implements Command, CommandQueue {
/** Queued commands, with a FIFO-suitable implementation. */
private final List<Command> commands = new LinkedList<Command>();
/** {@inheritDoc} */
public void addCommand(Command c) {
commands.add(c);
}
/**
* Runs all the commands in the queue until it's empty.
*/
public void execute() {
while (!commands.isEmpty()) {
commands.remove(0).execute();
}
}
/**
* @return whether there are any queued commands.
*/
public boolean isEmpty() {
return commands.isEmpty();
}
}