/*******************************************************************************
* Copyright (c) 2010, 2014 Ericsson and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Ericsson - initial API and implementation
* Marc Khouzam (Ericsson) - Disable button when no trace record is selected
*******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.ui.commands;
import java.util.Hashtable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.RejectedExecutionException;
import org.eclipse.cdt.dsf.concurrent.DataRequestMonitor;
import org.eclipse.cdt.dsf.concurrent.DsfExecutor;
import org.eclipse.cdt.dsf.concurrent.ImmediateRequestMonitor;
import org.eclipse.cdt.dsf.concurrent.Query;
import org.eclipse.cdt.dsf.datamodel.DMContexts;
import org.eclipse.cdt.dsf.gdb.internal.commands.ISelectPrevTraceRecordHandler;
import org.eclipse.cdt.dsf.gdb.internal.ui.GdbUIPlugin;
import org.eclipse.cdt.dsf.gdb.service.GDBTraceControl_7_2.TraceRecordSelectedChangedEvent;
import org.eclipse.cdt.dsf.gdb.service.IGDBTraceControl;
import org.eclipse.cdt.dsf.gdb.service.IGDBTraceControl.ITraceRecordDMContext;
import org.eclipse.cdt.dsf.gdb.service.IGDBTraceControl.ITraceStatusDMData;
import org.eclipse.cdt.dsf.gdb.service.IGDBTraceControl.ITraceStatusDMData2;
import org.eclipse.cdt.dsf.gdb.service.IGDBTraceControl.ITraceTargetDMContext;
import org.eclipse.cdt.dsf.service.DsfServicesTracker;
import org.eclipse.cdt.dsf.service.DsfSession;
import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.IDMVMContext;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.debug.core.IRequest;
import org.eclipse.debug.core.commands.AbstractDebugCommand;
import org.eclipse.debug.core.commands.IDebugCommandRequest;
import org.eclipse.debug.core.commands.IEnabledStateRequest;
/**
* Command to select the previous trace record
*
* @since 2.1
*/
public class GdbSelectPrevTraceRecordCommand extends AbstractDebugCommand implements ISelectPrevTraceRecordHandler {
private final DsfExecutor fExecutor;
private final DsfServicesTracker fTracker;
private final DsfSession fSession;
public GdbSelectPrevTraceRecordCommand(DsfSession session) {
fExecutor = session.getExecutor();
fTracker = new DsfServicesTracker(GdbUIPlugin.getBundleContext(), session.getId());
fSession = session;
}
public void dispose() {
fTracker.dispose();
}
@Override
protected void doExecute(Object[] targets, IProgressMonitor monitor, IRequest request) throws CoreException {
if (targets.length != 1) {
return;
}
final ITraceTargetDMContext dmc = DMContexts.getAncestorOfType(((IDMVMContext)targets[0]).getDMContext(), ITraceTargetDMContext.class);
if (dmc == null) {
return;
}
Query<Object> selectRecordQuery = new Query<Object>() {
@Override
public void execute(final DataRequestMonitor<Object> rm) {
final IGDBTraceControl traceControl = fTracker.getService(IGDBTraceControl.class);
if (traceControl != null) {
traceControl.getCurrentTraceRecordContext(
dmc,
new DataRequestMonitor<ITraceRecordDMContext>(fExecutor, rm) {
@Override
protected void handleSuccess() {
final ITraceRecordDMContext prevDmc = traceControl.createPrevRecordContext(getData());
traceControl.selectTraceRecord(prevDmc, new ImmediateRequestMonitor(rm) {
@Override
protected void handleSuccess() {
fSession.dispatchEvent(new TraceRecordSelectedChangedEvent(prevDmc), new Hashtable<String, String>());
rm.done();
}
});
};
});
} else {
rm.done();
}
}
};
try {
fExecutor.execute(selectRecordQuery);
selectRecordQuery.get();
} catch (InterruptedException e) {
} catch (ExecutionException e) {
} catch (RejectedExecutionException e) {
// Can be thrown if the session is shutdown
}
}
@Override
protected boolean isExecutable(Object[] targets, IProgressMonitor monitor, IEnabledStateRequest request)
throws CoreException
{
if (targets.length != 1) {
return false;
}
final ITraceTargetDMContext dmc = DMContexts.getAncestorOfType(((IDMVMContext)targets[0]).getDMContext(), ITraceTargetDMContext.class);
if (dmc == null) {
return false;
}
Query<Boolean> canSelectRecordQuery = new Query<Boolean>() {
@Override
public void execute(final DataRequestMonitor<Boolean> rm) {
final IGDBTraceControl traceControl = fTracker.getService(IGDBTraceControl.class);
if (traceControl != null) {
traceControl.getTraceStatus(dmc, new DataRequestMonitor<ITraceStatusDMData>(fExecutor, rm) {
@Override
protected void handleSuccess() {
if (getData().getNumberOfCollectedFrame() <= 0) {
// No frames to look at.
rm.done(false);
return;
}
if (getData() instanceof ITraceStatusDMData2) {
if (((ITraceStatusDMData2)getData()).getCurrentTraceFrameId() == null) {
// Haven't started looking at frames, so don't enable the "Previous" button
rm.done(false);
return;
}
}
traceControl.isTracing(dmc, new DataRequestMonitor<Boolean>(fExecutor, rm) {
@Override
protected void handleSuccess() {
// Can do visualization if we are tracing.
rm.done(!getData());
};
});
};
});
} else {
rm.done(false);
}
}
};
try {
fExecutor.execute(canSelectRecordQuery);
return canSelectRecordQuery.get();
} catch (InterruptedException e) {
} catch (ExecutionException e) {
} catch (RejectedExecutionException e) {
// Can be thrown if the session is shutdown
}
return false;
}
@Override
protected Object getTarget(Object element) {
if (element instanceof IDMVMContext) {
return element;
}
return null;
}
@Override
protected boolean isRemainEnabled(IDebugCommandRequest request) {
return true;
}
}