Java tutorial
/** * Copyright (c) Microsoft Corporation * <p/> * All rights reserved. * <p/> * MIT License * <p/> * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated * documentation files (the "Software"), to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and * to permit persons to whom the Software is furnished to do so, subject to the following conditions: * <p/> * The above copyright notice and this permission notice shall be included in all copies or substantial portions of * the Software. * <p/> * THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.microsoft.tooling.msservices.serviceexplorer; import com.google.common.util.concurrent.FutureCallback; import com.google.common.util.concurrent.Futures; import java.util.ArrayList; import java.util.List; public class NodeAction { private String name; private boolean enabled = true; private List<NodeActionListener> listeners = new ArrayList<NodeActionListener>(); private Node node; // the node with which this action is associated public NodeAction(Node node, String name) { this.node = node; this.name = name; } public String getName() { return name; } public void addListener(NodeActionListener listener) { listeners.add(listener); } public List<NodeActionListener> getListeners() { return listeners; } public void fireNodeActionEvent() { if (!listeners.isEmpty()) { final NodeActionEvent event = new NodeActionEvent(this); for (final NodeActionListener listener : listeners) { listener.beforeActionPerformed(event); Futures.addCallback(listener.actionPerformedAsync(event), new FutureCallback<Void>() { @Override public void onSuccess(Void aVoid) { listener.afterActionPerformed(event); } @Override public void onFailure(Throwable throwable) { listener.afterActionPerformed(event); } }); } } } public Node getNode() { return node; } public boolean isEnabled() { // if the node to which this action is attached is in a // "loading" state then we disable the action regardless // of what "enabled" is return !node.isLoading() && enabled; } public void setEnabled(boolean enabled) { this.enabled = enabled; } }