| package org.eclipse.gmf.tooling.runtime.part; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.commands.operations.OperationHistoryFactory; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.common.util.WrappedException; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.transaction.TransactionalEditingDomain; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gmf.runtime.common.core.command.ICommand; |
| import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand; |
| import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest; |
| import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand; |
| import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter; |
| import org.eclipse.gmf.runtime.notation.Node; |
| import org.eclipse.gmf.runtime.notation.View; |
| import org.eclipse.gmf.tooling.runtime.LogHelper; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.window.Window; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| /** |
| * @since 3.2 |
| */ |
| public abstract class DefaultCreateShortcutHandler extends AbstractHandler { |
| |
| private final LogHelper myLogHelper; |
| |
| private final PreferencesHint myPreferencesHint; |
| |
| public DefaultCreateShortcutHandler(LogHelper logHelper, PreferencesHint preferencesHint) { |
| myLogHelper = logHelper; |
| myPreferencesHint = preferencesHint; |
| } |
| |
| public abstract ICommand createShortcutDecorationCommand(View view, TransactionalEditingDomain editingDomain, List<CreateViewRequest.ViewDescriptor> descriptors); |
| |
| public abstract DefaultElementChooserDialog createChooserDialog(Shell parentShell, View view); |
| |
| public Object execute(org.eclipse.core.commands.ExecutionEvent event) throws org.eclipse.core.commands.ExecutionException { |
| IEditorPart diagramEditor = HandlerUtil.getActiveEditorChecked(event); |
| Shell shell = diagramEditor.getEditorSite().getShell(); |
| assert diagramEditor instanceof DiagramEditor; |
| TransactionalEditingDomain editingDomain = ((DiagramEditor) diagramEditor).getEditingDomain(); |
| ISelection selection = HandlerUtil.getCurrentSelectionChecked(event); |
| assert selection instanceof IStructuredSelection; |
| assert ((IStructuredSelection) selection).size() == 1; |
| assert ((IStructuredSelection) selection).getFirstElement() instanceof EditPart; |
| EditPart selectedDiagramPart = (EditPart) ((IStructuredSelection) selection).getFirstElement(); |
| final View view = (View) selectedDiagramPart.getModel(); |
| |
| Point d2dCursorBeforeDialog = getLastClickPosition(shell, event); |
| DefaultElementChooserDialog chooserDialog = createChooserDialog(shell, view); |
| int result = chooserDialog.open(); |
| if (result != Window.OK) { |
| return null; |
| } |
| |
| List<EObject> allSelectedObjects = getEObjectsByURI(chooserDialog.getSelectedModelElementURIs(), editingDomain); |
| if (allSelectedObjects.isEmpty()) { |
| return null; |
| } |
| |
| DropObjectsRequest request = createDragDropRequest(allSelectedObjects, d2dCursorBeforeDialog); |
| Command gefCommand = selectedDiagramPart.getCommand(request); |
| ICommand iCommand; |
| if (gefCommand != null && gefCommand.canExecute()) { |
| iCommand = new CommandProxy(gefCommand); |
| } else { |
| iCommand = createCompositeCommand(allSelectedObjects, view, editingDomain); |
| } |
| |
| if (iCommand != null) { |
| try { |
| OperationHistoryFactory.getOperationHistory().execute(iCommand, new NullProgressMonitor(), null); |
| } catch (ExecutionException e) { |
| myLogHelper.logError("Unable to create shortcut", e); //$NON-NLS-1$ |
| throw e; |
| } |
| } |
| |
| return null; |
| } |
| |
| private List<EObject> getEObjectsByURI(List<URI> selectedModelElementURIs, TransactionalEditingDomain editingDomain) { |
| List<EObject> result = new ArrayList<EObject>(); |
| for (URI nextURI : selectedModelElementURIs) { |
| try { |
| EObject next = editingDomain.getResourceSet().getEObject(nextURI, true); |
| if (next != null) { |
| result.add(next); |
| } |
| } catch (WrappedException e) { |
| myLogHelper.logError("Exception while loading object: " + nextURI.toString(), e); //$NON-NLS-1$ |
| } |
| } |
| return result; |
| } |
| |
| private CompositeTransactionalCommand createCompositeCommand(List<EObject> allSelectedObjects, View view, TransactionalEditingDomain editingDomain) { |
| CompositeTransactionalCommand result = new CompositeTransactionalCommand(editingDomain, "Add Shortcuts"); |
| List<ViewDescriptor> goodDescriptors = new ArrayList<CreateViewRequest.ViewDescriptor>(allSelectedObjects.size()); |
| for (EObject next : allSelectedObjects) { |
| CreateViewRequest.ViewDescriptor viewDescriptor = new CreateViewRequest.ViewDescriptor(new EObjectAdapter(next), Node.class, null, myPreferencesHint); |
| ICommand createCommand = new CreateCommand(editingDomain, viewDescriptor, view); |
| if (createCommand.canExecute()) { |
| result.add(createCommand); |
| goodDescriptors.add(viewDescriptor); |
| } |
| } |
| if (result.isEmpty()) { |
| return null; |
| } |
| ICommand addDecoration = createShortcutDecorationCommand(view, editingDomain, goodDescriptors); |
| if (addDecoration != null) { |
| result.add(addDecoration); |
| } |
| return result; |
| } |
| |
| private DropObjectsRequest createDragDropRequest(List<EObject> allSelectedObjects, Point d2dCursorBeforeDialog) { |
| DropObjectsRequest req = new DropObjectsRequest(); |
| req.setObjects(allSelectedObjects); |
| req.setAllowedDetail(DND.DROP_COPY); |
| req.setRequiredDetail(DND.DROP_COPY); |
| req.setLocation(d2dCursorBeforeDialog); |
| return req; |
| } |
| |
| private Point getLastClickPosition(Shell shell, ExecutionEvent event) { |
| Point fromSourceProvider = (Point) HandlerUtil.getVariable(event, LastClickPositionProvider.SOURCE_LAST_CLICK); |
| if (fromSourceProvider != null) { |
| return fromSourceProvider; |
| } |
| return new Point(0, 0); |
| } |
| } |