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Viewing changes to lttng/org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/RefreshHandler.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam, Jakub Adam, tony mancill
  • Date: 2014-10-11 11:44:05 UTC
  • mfrom: (1.2.4)
  • Revision ID: package-import@ubuntu.com-20141011114405-yazjvxfzzhmi5sgj
Tags: 3.1.0-1
http://bugs.debian.org/761524
[ Jakub Adam ]
* New upstream release (Closes: #761524).
* Refreshed d/patches.
* Don't build removed feature org.eclipse.linuxtools.tools.launch
  - merged into org.eclipse.linuxtools.profiling.
* Use javac target 1.7.
* Build new feature org.eclipse.linuxtools.dataviewers.feature
  - required by Valgrind integration.
* Build-depend on eclipse-remote-services-api and eclipse-cdt-autotools.
* Bump Standards-Version to 3.9.6.
* Override incompatible-java-bytecode-format - linuxtools needs Java 7.
* Remove unused codeless-jar override.

[ tony mancill ]
* Tweak short package description to make lintian happy.

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lttng/org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/RefreshHandler.java
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/**********************************************************************
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 * Copyright (c) 2012, 2013 Ericsson
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 *
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 * All rights reserved. This program and the accompanying materials are
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 * made available under the terms of the Eclipse Public License v1.0 which
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 * accompanies this distribution, and is available at
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 * http://www.eclipse.org/legal/epl-v10.html
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 *
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 * Contributors:
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 *   Bernd Hufmann - Initial API and implementation
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 **********************************************************************/
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package org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers;
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import java.util.Iterator;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.StructuredSelection;
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import org.eclipse.linuxtools.internal.lttng2.core.control.model.TargetNodeState;
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TargetNodeComponent;
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent;
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import org.eclipse.ui.IWorkbenchPage;
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/**
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 * <p>
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 * Command handler implementation to refresh node configuration.
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 * </p>
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 *
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 * @author Bernd Hufmann
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 */
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public class RefreshHandler extends BaseControlViewHandler {
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    // ------------------------------------------------------------------------
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    // Attributes
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    // ------------------------------------------------------------------------
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    /**
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     * The node component reference.
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     */
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    private TargetNodeComponent fNode;
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    // ------------------------------------------------------------------------
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    // Operations
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    // ------------------------------------------------------------------------
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    @Override
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    public Object execute(ExecutionEvent event) throws ExecutionException {
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        fLock.lock();
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        try {
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            fNode.refresh();
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        } finally {
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            fLock.unlock();
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        }
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        return null;
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    }
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    @Override
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    public boolean isEnabled() {
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        // Get workbench page for the Control View
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        IWorkbenchPage page = getWorkbenchPage();
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        if (page == null) {
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            return false;
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        }
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        TargetNodeComponent node = null;
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        // Check if one or more session are selected
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        ISelection selection = page.getSelection(ControlView.ID);
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        if (selection instanceof StructuredSelection) {
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            StructuredSelection structered = ((StructuredSelection) selection);
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            for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
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                Object element = iterator.next();
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                if (element instanceof TraceControlComponent) {
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                    TraceControlComponent component = (TraceControlComponent) element;
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                    boolean isConnected = component.getTargetNodeState() == TargetNodeState.CONNECTED;
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                    if (isConnected) {
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                        while ((component != null) && component.getClass() != TargetNodeComponent.class) {
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                            component = (TraceControlComponent) component.getParent();
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                        }
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                        if (component != null) {
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                            node = (TargetNodeComponent) component;
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                        }
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                    }
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                }
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            }
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        }
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        boolean isEnabled = node != null;
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        fLock.lock();
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        try {
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            fNode = null;
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            if (isEnabled) {
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                fNode = node;
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            }
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        } finally {
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            fLock.unlock();
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        }
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        return isEnabled;
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    }
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}