Java tutorial
/** * This file is protected by Copyright. * Please refer to the COPYRIGHT file distributed with this source distribution. * * This file is part of REDHAWK IDE. * * 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. * */ package gov.redhawk.frontend.ui.internal; import gov.redhawk.frontend.ListenerAllocation; import gov.redhawk.frontend.TunerContainer; import gov.redhawk.frontend.TunerStatus; import gov.redhawk.frontend.ui.FrontEndUIActivator; import gov.redhawk.frontend.ui.internal.section.FrontendSection; import gov.redhawk.frontend.util.TunerProperties.ListenerAllocationProperties; import gov.redhawk.frontend.util.TunerProperties.TunerAllocationProperties; import gov.redhawk.frontend.util.TunerUtils; import gov.redhawk.model.sca.RefreshDepth; import gov.redhawk.model.sca.ScaDevice; import gov.redhawk.model.sca.ScaFactory; import gov.redhawk.model.sca.ScaSimpleProperty; import gov.redhawk.model.sca.ScaStructProperty; import gov.redhawk.model.sca.commands.ScaModelCommand; import java.util.ArrayList; import java.util.List; import java.util.concurrent.Callable; import mil.jpeojtrs.sca.prf.PrfFactory; import mil.jpeojtrs.sca.prf.PrfPackage; import mil.jpeojtrs.sca.prf.Simple; import mil.jpeojtrs.sca.util.CorbaUtils; import mil.jpeojtrs.sca.util.ScaEcoreUtils; import org.eclipse.core.commands.AbstractHandler; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.commands.IHandler; import org.eclipse.core.expressions.IEvaluationContext; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.ui.handlers.HandlerUtil; import CF.DataType; import CF.DevicePackage.InvalidCapacity; import CF.DevicePackage.InvalidState; /** * */ public class DeallocateHandler extends AbstractHandler implements IHandler { /* * (non-Javadoc) * * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent) */ @Override public Object execute(ExecutionEvent event) throws ExecutionException { IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getActiveMenuSelection(event); if (selection == null) { selection = (IStructuredSelection) HandlerUtil.getCurrentSelection(event); } if (selection == null) { return null; } boolean removeSelection = true; Object obj = selection.getFirstElement(); if (obj instanceof TunerStatus) { TunerStatus tuner = (TunerStatus) obj; if (tuner.getTunerContainer() == null) { // already deallocated, probably still in a pinned properties view return null; } boolean proceed = true; if (tuner.getAllocationID() != null && !tuner.getAllocationID().isEmpty() && tuner.getAllocationID().contains(",")) { if (confirmDeallocate(tuner, event) == 0) { proceed = false; removeSelection = false; } } if (proceed) { deallocateTuner(tuner); } } if (obj instanceof TunerContainer) { TunerContainer container = (TunerContainer) obj; if (!confirmDeallocate(container, event)) { return null; } for (TunerStatus tuner : container.getTunerStatus().toArray(new TunerStatus[0])) { deallocateTuner(tuner); } removeSelection = false; } if (obj instanceof ScaDevice) { ScaDevice<?> device = (ScaDevice<?>) obj; TunerContainer container = TunerUtils.INSTANCE.getTunerContainer(device); if (!confirmDeallocate(container, event)) { return null; } for (TunerStatus tuner : container.getTunerStatus().toArray(new TunerStatus[0])) { deallocateTuner(tuner); } } if (obj instanceof ListenerAllocation) { final ListenerAllocation listener = (ListenerAllocation) obj; if (listener.getTunerStatus() == null) { // already deallocated, probably still in a pinned properties view return null; } final ScaDevice<?> device = ScaEcoreUtils.getEContainerOfType(listener, ScaDevice.class); if (device == null) { return null; } final DataType[] props = new DataType[1]; DataType dt = new DataType(); dt.id = "FRONTEND::listener_allocation"; dt.value = getListenerAllocationStruct(listener).toAny(); props[0] = dt; Job job = new Job("Deallocate FEI control") { @Override protected IStatus run(IProgressMonitor monitor) { try { monitor.beginTask("Deallocating", IProgressMonitor.UNKNOWN); CorbaUtils.invoke(new Callable<Object>() { @Override public Object call() throws Exception { try { device.deallocateCapacity(props); } catch (InvalidCapacity e) { throw new CoreException(new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Invalid Capacity in control deallocation: " + e.msg, e)); } catch (InvalidState e) { throw new CoreException(new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Invalid State in control deallocation: " + e.msg, e)); } return null; } }, monitor); device.refresh(null, RefreshDepth.SELF); } catch (InterruptedException e) { return new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Interrupted Exception during control deallocation", e); } catch (CoreException e) { return new Status(e.getStatus().getSeverity(), FrontEndUIActivator.PLUGIN_ID, "Failed to deallocate", e); } final TunerStatus tunerStatus = listener.getTunerStatus(); if (tunerStatus != null) { ScaModelCommand.execute(tunerStatus, new ScaModelCommand() { @Override public void execute() { tunerStatus.getListenerAllocations().remove(listener); } }); } return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); } // If called from toolbar button, we must unset the property page's selection to clear it Object section = ((IEvaluationContext) event.getApplicationContext()) .getVariable("gov.redhawk.frontend.propertySection"); if (section instanceof FrontendSection && removeSelection) { FrontendSection feSection = (FrontendSection) section; feSection.unsetPageSelection(); } return null; } private int confirmDeallocate(TunerStatus tuner, ExecutionEvent event) { MessageDialog warning = new MessageDialog(HandlerUtil.getActiveWorkbenchWindow(event).getShell(), "Deallocation Warning", null, "Some selected tuners have listeners. Deallocating them will also deallocate all of their listeners. Deallocate them anyway?", MessageDialog.WARNING, new String[] { "Cancel", "Yes" }, 0); return warning.open(); } private boolean confirmDeallocate(TunerContainer container, ExecutionEvent event) { for (TunerStatus tuner : container.getTunerStatus()) { if (tuner.getAllocationID() != null && !tuner.getAllocationID().isEmpty() && tuner.getAllocationID().contains(",")) { int response = confirmDeallocate(tuner, event); if (response == 0) { return false; } return true; } } return true; } private boolean deallocateTuner(TunerStatus tuner) { final ScaDevice<?> device = ScaEcoreUtils.getEContainerOfType(tuner, ScaDevice.class); final DataType[] props = createAllocationProperties(tuner); Job job = new Job("Deallocate FEI control") { @Override protected IStatus run(IProgressMonitor monitor) { try { monitor.beginTask("Deallocating", IProgressMonitor.UNKNOWN); CorbaUtils.invoke(new Callable<Object>() { @Override public Object call() throws Exception { try { device.deallocateCapacity(props); return null; } catch (InvalidCapacity e) { throw new CoreException(new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Invalid Capacity in control deallocation: " + e.msg, e)); } catch (InvalidState e) { throw new CoreException(new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Invalid State in control deallocation: " + e.msg, e)); } } }, monitor); device.refresh(monitor, RefreshDepth.SELF); return Status.OK_STATUS; } catch (InterruptedException e) { return new Status(IStatus.ERROR, FrontEndUIActivator.PLUGIN_ID, "Interrupted Exception during control deallocation", e); } catch (CoreException e) { return new Status(e.getStatus().getSeverity(), FrontEndUIActivator.PLUGIN_ID, "Failed to deallocate", e); } } }; job.setUser(true); job.schedule(); return true; } private DataType[] createAllocationProperties(TunerStatus tuner) { List<DataType> props = new ArrayList<DataType>(); ScaStructProperty struct; DataType dt = new DataType(); struct = getTunerAllocationStruct(tuner); dt.id = "FRONTEND::tuner_allocation"; dt.value = struct.toAny(); props.add(dt); return props.toArray(new DataType[0]); } private ScaStructProperty getTunerAllocationStruct(TunerStatus tuner) { ScaStructProperty tunerAllocationStruct = ScaFactory.eINSTANCE.createScaStructProperty(); TunerAllocationProperties allocPropID = TunerAllocationProperties.valueOf("ALLOCATION_ID"); ScaSimpleProperty simple = ScaFactory.eINSTANCE.createScaSimpleProperty(); Simple definition = (Simple) PrfFactory.eINSTANCE.create(PrfPackage.Literals.SIMPLE); definition.setType(allocPropID.getType()); definition.setId(allocPropID.getType().getLiteral()); definition.setName(allocPropID.getType().getName()); simple.setDefinition(definition); simple.setId(allocPropID.getId()); setValueForProp(tuner, allocPropID, simple); tunerAllocationStruct.getSimples().add(simple); return tunerAllocationStruct; } private ScaStructProperty getListenerAllocationStruct(ListenerAllocation listener) { ScaStructProperty listenerAllocationStruct = ScaFactory.eINSTANCE.createScaStructProperty(); ListenerAllocationProperties allocPropID = ListenerAllocationProperties.LISTENER_ALLOCATION_ID; ScaSimpleProperty simple = ScaFactory.eINSTANCE.createScaSimpleProperty(); Simple definition = (Simple) PrfFactory.eINSTANCE.create(PrfPackage.Literals.SIMPLE); definition.setType(allocPropID.getType()); definition.setId(allocPropID.getType().getLiteral()); definition.setName(allocPropID.getType().getName()); simple.setDefinition(definition); simple.setId(allocPropID.getId()); simple.setValue(listener.getListenerID()); listenerAllocationStruct.getSimples().add(simple); return listenerAllocationStruct; } private void setValueForProp(TunerStatus tuner, TunerAllocationProperties allocPropID, ScaSimpleProperty simple) { // Deallocates control id and all listeners String value = tuner.getTunerStatusStruct().getSimple("FRONTEND::tuner_status::allocation_id_csv") .getValue().toString(); int endControlIndex = value.indexOf(','); if (endControlIndex > 0) { value = value.substring(0, endControlIndex); } simple.setValue(value); } }