| /********************************************************************** |
| * 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 java.util.Iterator; |
| |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.tracecompass.internal.lttng2.control.core.model.TargetNodeState; |
| import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView; |
| import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TargetNodeComponent; |
| import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceControlComponent; |
| import org.eclipse.ui.IWorkbenchPage; |
| |
| /** |
| * <p> |
| * Command handler implementation to refresh node configuration. |
| * </p> |
| * |
| * @author Bernd Hufmann |
| */ |
| public class RefreshHandler extends BaseControlViewHandler { |
| |
| // ------------------------------------------------------------------------ |
| // Attributes |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * The node component reference. |
| */ |
| @Nullable private TargetNodeComponent fNode; |
| |
| // ------------------------------------------------------------------------ |
| // Operations |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| TargetNodeComponent node; |
| fLock.lock(); |
| try { |
| node = fNode; |
| } finally { |
| fLock.unlock(); |
| } |
| if (node != null) { |
| node.refresh(); |
| } |
| return null; |
| } |
| |
| @Override |
| public boolean isEnabled() { |
| |
| // Get workbench page for the Control View |
| IWorkbenchPage page = getWorkbenchPage(); |
| if (page == null) { |
| return false; |
| } |
| |
| TargetNodeComponent node = null; |
| // Check if one or more session are selected |
| ISelection selection = page.getSelection(ControlView.ID); |
| if (selection instanceof StructuredSelection) { |
| |
| StructuredSelection structered = ((StructuredSelection) selection); |
| for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) { |
| Object element = iterator.next(); |
| if (element instanceof TraceControlComponent) { |
| TraceControlComponent component = (TraceControlComponent) element; |
| boolean isConnected = component.getTargetNodeState() == TargetNodeState.CONNECTED; |
| if (isConnected) { |
| while ((component != null) && component.getClass() != TargetNodeComponent.class) { |
| component = (TraceControlComponent) component.getParent(); |
| } |
| if (component != null) { |
| node = (TargetNodeComponent) component; |
| } |
| } |
| } |
| } |
| } |
| |
| boolean isEnabled = node != null; |
| |
| fLock.lock(); |
| try { |
| fNode = null; |
| if (isEnabled) { |
| fNode = node; |
| } |
| } finally { |
| fLock.unlock(); |
| } |
| |
| return isEnabled; |
| } |
| } |