| 1 | package de.uka.ipd.sdq.pcmbench.tabs.parameters; |
| 2 | |
| 3 | import java.util.Observable; |
| 4 | |
| 5 | import org.eclipse.core.runtime.Assert; |
| 6 | import org.eclipse.emf.ecore.EObject; |
| 7 | import org.eclipse.emf.transaction.RecordingCommand; |
| 8 | import org.eclipse.emf.transaction.TransactionalEditingDomain; |
| 9 | import org.eclipse.emf.transaction.util.TransactionUtil; |
| 10 | import org.eclipse.jface.viewers.ISelectionChangedListener; |
| 11 | import org.eclipse.jface.viewers.IStructuredSelection; |
| 12 | import org.eclipse.jface.viewers.SelectionChangedEvent; |
| 13 | import org.eclipse.swt.events.SelectionEvent; |
| 14 | import org.eclipse.swt.events.SelectionListener; |
| 15 | |
| 16 | import de.uka.ipd.sdq.pcm.core.composition.AssemblyContext; |
| 17 | import de.uka.ipd.sdq.pcm.parameter.VariableUsage; |
| 18 | |
| 19 | public class DeleteComponentParameterAction extends Observable implements |
| 20 | SelectionListener, ISelectionChangedListener { |
| 21 | |
| 22 | private EObject selectedElement = null; |
| 23 | |
| 24 | /* (non-Javadoc) |
| 25 | * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent) |
| 26 | */ |
| 27 | public void selectionChanged(SelectionChangedEvent event) { |
| 28 | IStructuredSelection sel = (IStructuredSelection) event.getSelection(); |
| 29 | Object selection = (Object) sel.getFirstElement(); |
| 30 | this.selectedElement = (EObject) selection; |
| 31 | } |
| 32 | |
| 33 | /* (non-Javadoc) |
| 34 | * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent) |
| 35 | */ |
| 36 | public void widgetSelected(SelectionEvent e) { |
| 37 | final VariableUsageWrapper wrapper = (VariableUsageWrapper) selectedElement; |
| 38 | final VariableUsage variableUsage = wrapper.getVariableUsage(); |
| 39 | final AssemblyContext context = (AssemblyContext) variableUsage |
| 40 | .eContainer(); |
| 41 | |
| 42 | Assert.isNotNull(context); |
| 43 | |
| 44 | TransactionalEditingDomain editingDomain = TransactionUtil |
| 45 | .getEditingDomain(context); |
| 46 | |
| 47 | RecordingCommand recCommand = new RecordingCommand(editingDomain) { |
| 48 | @Override |
| 49 | protected void doExecute() { |
| 50 | context.getConfigParameterUsages__AssemblyContext().remove( |
| 51 | variableUsage); |
| 52 | } |
| 53 | }; |
| 54 | |
| 55 | recCommand.setDescription("Delete ..."); |
| 56 | editingDomain.getCommandStack().execute(recCommand); |
| 57 | |
| 58 | // set TabelItem not edited |
| 59 | wrapper.setEdited(false); |
| 60 | // update observer |
| 61 | notifyObservers(wrapper); |
| 62 | |
| 63 | } |
| 64 | |
| 65 | /* (non-Javadoc) |
| 66 | * @see java.util.Observable#notifyObservers(java.lang.Object) |
| 67 | */ |
| 68 | @Override |
| 69 | public void notifyObservers(Object arg) { |
| 70 | setChanged(); |
| 71 | super.notifyObservers(arg); |
| 72 | } |
| 73 | |
| 74 | /* (non-Javadoc) |
| 75 | * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent) |
| 76 | */ |
| 77 | public void widgetDefaultSelected(SelectionEvent e) { |
| 78 | // The implementation is not necessary. |
| 79 | } |
| 80 | } |