| /********************************************************************** |
| * Copyright (c) 2012, 2015 Ericsson |
| * |
| * All rights reserved. This program and the accompanying materials are |
| * made available under the terms of the Eclipse Public License 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Bernd Hufmann - Initial API and implementation |
| **********************************************************************/ |
| package org.eclipse.tracecompass.internal.lttng2.control.ui.views.handlers; |
| |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.tracecompass.internal.lttng2.control.core.model.TargetNodeState; |
| import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.ITraceControlComponent; |
| import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TargetNodeComponent; |
| |
| /** |
| * <p> |
| * Command handler implementation to delete a target host. |
| * </p> |
| * |
| * @author Bernd Hufmann |
| */ |
| public class DeleteHandler extends BaseNodeHandler { |
| |
| // ------------------------------------------------------------------------ |
| // Operations |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| fLock.lock(); |
| TargetNodeComponent node = null; |
| try { |
| node = fTargetNode; |
| } finally { |
| fLock.unlock(); |
| } |
| |
| if (node != null) { |
| ITraceControlComponent root = node.getParent(); |
| node.removeAllChildren(); |
| root.removeChild(fTargetNode); |
| node.disconnect(); |
| } |
| return null; |
| } |
| |
| @Override |
| public boolean isEnabled() { |
| boolean isEnabled = false; |
| fLock.lock(); |
| try { |
| isEnabled = super.isEnabled(); |
| TargetNodeComponent node = fTargetNode; |
| isEnabled &= ((node != null) && (node.getTargetNodeState() == TargetNodeState.DISCONNECTED)); |
| } finally { |
| fLock.unlock(); |
| } |
| return isEnabled; |
| } |
| } |