| DnD between view and GMF editor [message #222375] |
Mon, 23 March 2009 16:00  |
 Esteban Dugueperoux
Messages: 472
Registered: July 2009 |
Senior Member |
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This is a multi-part message in MIME format.
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Hi,
I have a view (ViewPart) containing a tree of "AbstractCategory" objects
and a GMF diagram editor generated from the attached ecore metamodel.
I try by drag'n drop to add "MDAProject" object from my tree-based view
to my GMF editor.
Then in createPartControl method of my view I have writen:
int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance() };
viewer.addDragSupport(dndOperations, transfers, new
ViewerDragAdapter(viewer));
and in my GMF Editor I have written the initializeGraphicalViewer()
method (see MdaDiagramEditor attached file).
At the drop step, I can fetch the selected "MDAProject" objects but I
can't add them to model.
I don't understand why I can add any object conform to metamodel with
the TransactionalEditingDomain.
Someone has ideas?
Thanks in advance.
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--------------020208090209020400080902
Content-Type: text/plain;
name="MdaDiagramEditor.java"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="MdaDiagramEditor.java"
package com.miasoftware.miastudio.model.mda.diagram.part;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.ui.URIEditorInput;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.edit.command.AddCommand;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.ui.dnd.LocalTransfer;
import org.eclipse.emf.query.conditions.eobjects.EObjectInstanceCon dition;
import org.eclipse.emf.query.statements.FROM;
import org.eclipse.emf.query.statements.SELECT;
import org.eclipse.emf.query.statements.WHERE;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
import org.eclipse.gef.palette.PaletteRoot;
import org.eclipse.gmf.runtime.common.ui.services.marker.MarkerNavi gationService;
import org.eclipse.gmf.runtime.diagram.core.preferences.Preferences Hint;
import org.eclipse.gmf.runtime.diagram.ui.actions.ActionIds;
import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramDropTargetLi stener;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document .IDiagramDocument;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document .IDocument;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document .IDocumentProvider;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.Di agramDocumentEditor;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.util.TransferDropTargetListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.TransferData;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorMatchingStrategy;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.SaveAsDialog;
import org.eclipse.ui.ide.IGotoMarker;
import org.eclipse.ui.navigator.resources.ProjectExplorer;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.part.IShowInTargetList;
import org.eclipse.ui.part.ShowInContext;
import com.miasoftware.miastudio.model.mda.AbstractCategory;
import com.miasoftware.miastudio.model.mda.MDACategory;
import com.miasoftware.miastudio.model.mda.MDAProject;
import com.miasoftware.miastudio.model.mda.MdaPackage;
import com.miasoftware.miastudio.model.mda.diagram.navigator.MdaNav igatorItem;
/**
* @generated
*/
public class MdaDiagramEditor extends DiagramDocumentEditor implements
IGotoMarker {
private static final String EDITING_DOMAIN_ID = "org.eclipse.gmf.examples.runtime.diagram.logicEditingDomain "; //$NON-NLS-1$
private static final List SUPPORTED_DRAG_DROP_ECLASSES = new ArrayList();
static {
SUPPORTED_DRAG_DROP_ECLASSES.add(MdaPackage.eINSTANCE.getMDA Project());
// SUPPORTED_DRAG_DROP_ECLASSES.add(SemanticPackage.eINSTANCE.g etAndGate());
}
/**
* @generated
*/
public static final String ID = " com.miasoftware.miastudio.model.mda.diagram.part.MdaDiagramE ditorID "; //$NON-NLS-1$
/**
* @generated
*/
public static final String CONTEXT_ID = " com.miasoftware.miastudio.model.mda.diagram.ui.diagramContex t "; //$NON-NLS-1$
/**
* @generated
*/
public MdaDiagramEditor() {
super(true);
// getDiagramGraphicalViewer().addDragSourceListener(new TransferDragSourceListener(){
//
// public Transfer getTransfer() {
// return null;
// }
//
// public void dragFinished(DragSourceEvent event) {
//
// }
//
// public void dragSetData(DragSourceEvent event) {
//
// }
//
// public void dragStart(DragSourceEvent event) {
//
// }
//
// });
// getDiagramGraphicalViewer().add
// getDiagramGraphicalViewer().addDropTargetListener(new TransferDropTargetListener(){
//
// public Transfer getTransfer() {
// System.out.println("MdadiagramEditor.getTransfer");
// return MySimpleObjectTransfer.getInstance();
// }
//
// public boolean isEnabled(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.isEnabled");
// return false;
// }
//
// public void dragEnter(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.dragEnter");
//
// }
//
// public void dragLeave(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.dragLeave");
// }
//
// public void dragOperationChanged(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.dragOperationChanged");
// }
//
// public void dragOver(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.dragOver");
// }
//
// public void drop(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.drop");
// }
//
// public void dropAccept(DropTargetEvent event) {
// System.out.println("MdadiagramEditor.dropAccept");
// }
//
// });
}
protected void initializeGraphicalViewer() {
super.initializeGraphicalViewer();
getDiagramGraphicalViewer().addDropTargetListener(
(TransferDropTargetListener) new DiagramDropTargetListener(
getDiagramGraphicalViewer(), LocalTransfer
.getInstance()) {
protected List getObjectsBeingDropped() {
System.out.println("MdaDiagramEditor.getObjectsBeingDropped ");
TransferData[] data = getCurrentEvent().dataTypes;
List<MDAProject> ret = new ArrayList<MDAProject>();
for(TransferData obj : data){
System.out.println("MdaDiagramEditor.getObjectsBeingDropped data : "+obj);
}
for (int i = 0; i < data.length; i++) {
boolean cond = LocalTransfer.getInstance().isSupportedType(data[i]);
System.out.println("LocalTransfer.getInstance().isSupportedType(data[i]) : "+cond);
if (cond) {
IStructuredSelection selection = (IStructuredSelection) LocalTransfer
.getInstance().nativeToJava(data[i]);
System.out.println("selection : "+selection);
System.out.println("selection.toList() : "+selection.toList());
for(Object obj : selection.toList()){
if( obj instanceof AbstractCategory){
AbstractCategory cat = (AbstractCategory) obj;
ret.addAll(fetchSelectedMDAProject(cat));
}
}
}
}
System.out.println("MdaDiagramEditor.getObjectsBeingDropped eObjects.size() : "+ret.size());
for(Object obj : ret){
System.out.println("MdaDiagramEditor.getObjectsBeingDropped eObjects : "+obj);
}
return ret;
}
private Collection<MDAProject> fetchSelectedMDAProject(
AbstractCategory cat) {
Collection<MDAProject> ret = new ArrayList<MDAProject>();
if(cat instanceof MDAProject){
MDAProject project = (MDAProject) cat;
ret.add(project);
}else{
MDACategory category = (MDACategory) cat;
for(AbstractCategory abstractCategory : category.getChilds()){
ret.addAll(fetchSelectedMDAProject(abstractCategory));
}
}
return ret;
}
public boolean isEnabled(DropTargetEvent event) {
System.out.println("MdaDiagramEditor.isEnabled");
boolean ret = true;
// if (super.isEnabled(event)) {
// Object modelObj = getViewer().getContents()
// .getModel();
// if (modelObj instanceof EObject) {
// List eObjects = getDropObjectsRequest()
// .getObjects();
//
// if (eObjects == null)
// ret = false;
//
// for (Iterator i = eObjects.iterator(); i
// .hasNext();) {
// Object o = i.next();
//
// if (!(o instanceof EObject))
// ret = false;
//
// if (!SUPPORTED_DRAG_DROP_ECLASSES
// .contains(((EObject) o).eClass()))
// ret = false;
// }
//
// ret = true;
// }
// }
//
// ret = false;
System.out.println("MdaDiagramEditor.isEnabled ret : "+ret);
return ret;
}
@Override
protected void handleDrop() {
super.handleDrop();
List<Object> droppedProjects = getObjectsBeingDropped();
List<MDAProject> projects = new ArrayList<MDAProject>();
TransactionalEditingDomain domain = getEditingDomain();
for(Object obj : droppedProjects){
if(obj instanceof MDAProject){
MDAProject project = (MDAProject) obj;
System.out.println("obj is instance of MDAProject");
projects.add(project);
System.out.println("project.eContainer() : "+project.eContainer());
System.out.println("project.eContainingFeature() : "+project.eContainingFeature());
}
System.out.println("dropped obj : "+obj);
}
// EList<EObject> objs = domain.getResourceSet().getResources().iterator().next().get Contents();
// System.err.println("objs : "+objs);
// SELECT query = new SELECT(
// new FROM(objs),
// new WHERE(new EObjectInstanceCondition(MdaPackage.eINSTANCE.getRootProject ()))
// );
// Collection resultObjs = query.execute();
// for(Object obj : resultObjs){
// System.err.println("query.execute(); obj : "+obj);
// }
// System.out.println("MdaPackage.eINSTANCE.getRootProject() : "+MdaPackage.eINSTANCE.getRootProject());
// System.out.println("MdaPackage.eINSTANCE.getRootProject_MdaProjects() : "+MdaPackage.eINSTANCE.getRootProject_MdaProjects());
// AddCommand cmd = new AddCommand(domain, (EObject) resultObjs.iterator().next(), MdaPackage.eINSTANCE.getRootProject_MdaProjects(), projects);
CommandParameter param = new CommandParameter(MdaPackage.eINSTANCE.getRootProject(), MdaPackage.eINSTANCE.getRootProject_MdaProjects(), projects);
Command addCommand = domain.createCommand(AddCommand.class, param);
domain.getCommandStack().execute(addCommand);
boolean canExecute = addCommand.canExecute();
System.out.println("canExecute : "+canExecute);
try {
domain.getResourceSet().getResources().iterator().next().sav e(null);
for(Resource resource : domain.getResourceSet().getResources()){
resource.save(null);
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
// protected void initializeGraphicalViewer() {
// super.initializeGraphicalViewer();
// getDiagramGraphicalViewer().addDropTargetListener(
// new DropTargetListener(getDiagramGraphicalViewer(),
// LocalSelectionTransfer.getTransfer()) {
//
// protected Object getJavaObject(TransferData data) {
// return LocalSelectionTransfer.getTransfer()
// .nativeToJava(data);
// }
//
// });
// getDiagramGraphicalViewer().addDropTargetListener(
// new DropTargetListener(getDiagramGraphicalViewer(),
// LocalTransfer.getInstance()) {
//
// protected Object getJavaObject(TransferData data) {
// return LocalTransfer.getInstance().nativeToJava(data);
// }
//
// });
// }
/**
* @generated
*/
protected String getContextID() {
return CONTEXT_ID;
}
/**
* @generated
*/
protected PaletteRoot createPaletteRoot(PaletteRoot existingPaletteRoot) {
PaletteRoot root = super.createPaletteRoot(existingPaletteRoot);
new MdaPaletteFactory().fillPalette(root);
return root;
}
/**
* @generated
*/
protected PreferencesHint getPreferencesHint() {
return MdaDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT;
}
/**
* @generated
*/
public String getContributorId() {
return MdaDiagramEditorPlugin.ID;
}
/**
* @generated
*/
public Object getAdapter(Class type) {
if (type == IShowInTargetList.class) {
return new IShowInTargetList() {
public String[] getShowInTargetIds() {
return new String[] { ProjectExplorer.VIEW_ID };
}
};
}
return super.getAdapter(type);
}
/**
* @generated
*/
protected IDocumentProvider getDocumentProvider(IEditorInput input) {
if (input instanceof IFileEditorInput
|| input instanceof URIEditorInput) {
return MdaDiagramEditorPlugin.getInstance().getDocumentProvider();
}
return super.getDocumentProvider(input);
}
/**
* @generated
*/
public TransactionalEditingDomain getEditingDomain() {
IDocument document = getEditorInput() != null ? getDocumentProvider()
.getDocument(getEditorInput()) : null;
if (document instanceof IDiagramDocument) {
return ((IDiagramDocument) document).getEditingDomain();
}
return super.getEditingDomain();
}
/**
* @generated
*/
protected void setDocumentProvider(IEditorInput input) {
if (input instanceof IFileEditorInput
|| input instanceof URIEditorInput) {
setDocumentProvider(MdaDiagramEditorPlugin.getInstance()
.getDocumentProvider());
} else {
super.setDocumentProvider(input);
}
}
/**
* @generated
*/
public void gotoMarker(IMarker marker) {
MarkerNavigationService.getInstance().gotoMarker(this, marker);
}
/**
* @generated
*/
public boolean isSaveAsAllowed() {
return true;
}
/**
* @generated
*/
public void doSaveAs() {
performSaveAs(new NullProgressMonitor());
}
/**
* @generated
*/
protected void performSaveAs(IProgressMonitor progressMonitor) {
Shell shell = getSite().getShell();
IEditorInput input = getEditorInput();
SaveAsDialog dialog = new SaveAsDialog(shell);
IFile original = input instanceof IFileEditorInput ? ((IFileEditorInput) input)
.getFile()
: null;
if (original != null) {
dialog.setOriginalFile(original);
}
dialog.create();
IDocumentProvider provider = getDocumentProvider();
if (provider == null) {
// editor has been programmatically closed while the dialog was open
return;
}
if (provider.isDeleted(input) && original != null) {
String message = NLS.bind(
Messages.MdaDiagramEditor_SavingDeletedFile, original
.getName());
dialog.setErrorMessage(null);
dialog.setMessage(message, IMessageProvider.WARNING);
}
if (dialog.open() == Window.CANCEL) {
if (progressMonitor != null) {
progressMonitor.setCanceled(true);
}
return;
}
IPath filePath = dialog.getResult();
if (filePath == null) {
if (progressMonitor != null) {
progressMonitor.setCanceled(true);
}
return;
}
IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
IFile file = workspaceRoot.getFile(filePath);
final IEditorInput newInput = new FileEditorInput(file);
// Check if the editor is already open
IEditorMatchingStrategy matchingStrategy = getEditorDescriptor()
.getEditorMatchingStrategy();
IEditorReference[] editorRefs = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow().getActivePage()
.getEditorReferences();
for (int i = 0; i < editorRefs.length; i++) {
if (matchingStrategy.matches(editorRefs[i], newInput)) {
MessageDialog.openWarning(shell,
Messages.MdaDiagramEditor_SaveAsErrorTitle,
Messages.MdaDiagramEditor_SaveAsErrorMessage);
return;
}
}
boolean success = false;
try {
provider.aboutToChange(newInput);
getDocumentProvider(newInput).saveDocument(progressMonitor,
newInput,
getDocumentProvider().getDocument(getEditorInput()), true);
success = true;
} catch (CoreException x) {
IStatus status = x.getStatus();
if (status == null || status.getSeverity() != IStatus.CANCEL) {
ErrorDialog.openError(shell,
Messages.MdaDiagramEditor_SaveErrorTitle,
Messages.MdaDiagramEditor_SaveErrorMessage, x
.getStatus());
}
} finally {
provider.changed(newInput);
if (success) {
setInput(newInput);
}
}
if (progressMonitor != null) {
progressMonitor.setCanceled(!success);
}
}
/**
* @generated
*/
public ShowInContext getShowInContext() {
return new ShowInContext(getEditorInput(), getNavigatorSelection());
}
/**
* @generated
*/
private ISelection getNavigatorSelection() {
IDiagramDocument document = getDiagramDocument();
if (document == null) {
return StructuredSelection.EMPTY;
}
Diagram diagram = document.getDiagram();
IFile file = WorkspaceSynchronizer.getFile(diagram.eResource());
if (file != null) {
MdaNavigatorItem item = new MdaNavigatorItem(diagram, file, false);
return new StructuredSelection(item);
}
return StructuredSelection.EMPTY;
}
/**
* @generated
*/
protected void configureGraphicalViewer() {
super.configureGraphicalViewer();
DiagramEditorContextMenuProvider provider = new DiagramEditorContextMenuProvider(
this, getDiagramGraphicalViewer());
getDiagramGraphicalViewer().setContextMenu(provider);
getSite().registerContextMenu(ActionIds.DIAGRAM_EDITOR_CONTE XT_MENU,
provider, getDiagramGraphicalViewer());
}
}
--------------020208090209020400080902--
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