| 1 | package de.uka.ipd.sdq.pcm.gmf.seff.helper; |
| 2 | |
| 3 | import org.eclipse.emf.ecore.EObject; |
| 4 | import org.eclipse.gmf.runtime.common.core.command.ICommand; |
| 5 | import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice; |
| 6 | import org.eclipse.gmf.runtime.emf.type.core.edithelper.IEditHelperAdvice; |
| 7 | import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest; |
| 8 | import org.eclipse.swt.SWT; |
| 9 | import org.eclipse.swt.widgets.MessageBox; |
| 10 | import org.eclipse.swt.widgets.Shell; |
| 11 | import org.eclipse.ui.PlatformUI; |
| 12 | |
| 13 | import de.uka.ipd.sdq.pcm.repository.OperationSignature; |
| 14 | import de.uka.ipd.sdq.pcm.repository.Parameter; |
| 15 | import de.uka.ipd.sdq.pcm.repository.ParameterModifier; |
| 16 | import de.uka.ipd.sdq.pcm.seff.ResourceDemandingSEFF; |
| 17 | |
| 18 | /** |
| 19 | * This class defines an EditHelper to handle the creation of an SetVariableAction. |
| 20 | * |
| 21 | * @author Christian Busch |
| 22 | */ |
| 23 | public class SetVariableActionEditHelperAdvice extends |
| 24 | AbstractEditHelperAdvice implements IEditHelperAdvice { |
| 25 | |
| 26 | /* (non-Javadoc) |
| 27 | * @see org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice#getBeforeConfigureCommand(org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest) |
| 28 | */ |
| 29 | @Override |
| 30 | protected ICommand getBeforeConfigureCommand(ConfigureRequest request) { |
| 31 | |
| 32 | if (hasReturn(request)) { |
| 33 | return new OKCommand(); |
| 34 | } else { |
| 35 | Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(); |
| 36 | |
| 37 | MessageBox messageBox = |
| 38 | new MessageBox(shell , |
| 39 | SWT.OK |
| 40 | | SWT.ICON_WARNING); |
| 41 | messageBox.setText("Notice"); |
| 42 | messageBox.setMessage("In order to create a SetVariableAction there must be a return type specified for the signature of the interface."); |
| 43 | messageBox.open(); |
| 44 | |
| 45 | return new CanceledCommand(); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Checks whether the SEFF corresponding to the request |
| 51 | * has a signature with at least one return type specified. |
| 52 | * |
| 53 | * @param request to be checked |
| 54 | * @return true if return parameter(s) of signature specified |
| 55 | */ |
| 56 | protected boolean hasReturn(ConfigureRequest request) { |
| 57 | |
| 58 | boolean hasReturn = false; |
| 59 | EObject node = request.getElementToConfigure(); |
| 60 | |
| 61 | /* walk through the tree */ |
| 62 | while (!(node instanceof ResourceDemandingSEFF)) { |
| 63 | node = node.eContainer(); |
| 64 | if (node == null) { |
| 65 | return false; |
| 66 | } |
| 67 | } |
| 68 | node = ((ResourceDemandingSEFF) node).getDescribedService__SEFF(); |
| 69 | if (node instanceof OperationSignature) { |
| 70 | OperationSignature signature = (OperationSignature) node; |
| 71 | /* check signature */ |
| 72 | for (Parameter p : signature.getParameters__OperationSignature()) { |
| 73 | if (p.getModifier__Parameter() == ParameterModifier.OUT |
| 74 | || p.getModifier__Parameter() == ParameterModifier.INOUT) { |
| 75 | hasReturn = true; |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | if (signature.getReturnType__OperationSignature() != null) { |
| 80 | hasReturn = true; |
| 81 | } |
| 82 | } |
| 83 | return hasReturn; |
| 84 | } |
| 85 | } |
| 86 | |