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package org.eclipse.gmf.examples.mindmap.diagram.providers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.gmf.examples.mindmap.diagram.edit.parts.MapEditPart;
import org.eclipse.gmf.examples.mindmap.diagram.edit.parts.TopicEditPart;
import org.eclipse.gmf.examples.mindmap.diagram.part.Messages;
import org.eclipse.gmf.examples.mindmap.diagram.part.MindmapDiagramEditorPlugin;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.ui.services.modelingassistant.ModelingAssistantProvider;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.dialogs.ElementListSelectionDialog;
/**
* @generated
*/
public class MindmapModelingAssistantProvider extends ModelingAssistantProvider {
/**
* @generated
*/
public List getTypesForPopupBar(IAdaptable host) {
IGraphicalEditPart editPart = (IGraphicalEditPart) host
.getAdapter(IGraphicalEditPart.class);
if (editPart instanceof MapEditPart) {
List types = new ArrayList();
types.add(MindmapElementTypes.Topic_1001);
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public List getRelTypesOnSource(IAdaptable source) {
IGraphicalEditPart sourceEditPart = (IGraphicalEditPart) source
.getAdapter(IGraphicalEditPart.class);
if (sourceEditPart instanceof TopicEditPart) {
List types = new ArrayList();
types.add(MindmapElementTypes.TopicSubtopics_3001);
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public List getRelTypesOnTarget(IAdaptable target) {
IGraphicalEditPart targetEditPart = (IGraphicalEditPart) target
.getAdapter(IGraphicalEditPart.class);
if (targetEditPart instanceof TopicEditPart) {
List types = new ArrayList();
types.add(MindmapElementTypes.TopicSubtopics_3001);
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public List getRelTypesOnSourceAndTarget(IAdaptable source,
IAdaptable target) {
IGraphicalEditPart sourceEditPart = (IGraphicalEditPart) source
.getAdapter(IGraphicalEditPart.class);
IGraphicalEditPart targetEditPart = (IGraphicalEditPart) target
.getAdapter(IGraphicalEditPart.class);
if (sourceEditPart instanceof TopicEditPart) {
List types = new ArrayList();
if (targetEditPart instanceof TopicEditPart) {
types.add(MindmapElementTypes.TopicSubtopics_3001);
}
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public List getTypesForSource(IAdaptable target,
IElementType relationshipType) {
IGraphicalEditPart targetEditPart = (IGraphicalEditPart) target
.getAdapter(IGraphicalEditPart.class);
if (targetEditPart instanceof TopicEditPart) {
List types = new ArrayList();
if (relationshipType == MindmapElementTypes.TopicSubtopics_3001) {
types.add(MindmapElementTypes.Topic_1001);
}
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public List getTypesForTarget(IAdaptable source,
IElementType relationshipType) {
IGraphicalEditPart sourceEditPart = (IGraphicalEditPart) source
.getAdapter(IGraphicalEditPart.class);
if (sourceEditPart instanceof TopicEditPart) {
List types = new ArrayList();
if (relationshipType == MindmapElementTypes.TopicSubtopics_3001) {
types.add(MindmapElementTypes.Topic_1001);
}
return types;
}
return Collections.EMPTY_LIST;
}
/**
* @generated
*/
public EObject selectExistingElementForSource(IAdaptable target,
IElementType relationshipType) {
return selectExistingElement(target, getTypesForSource(target,
relationshipType));
}
/**
* @generated
*/
public EObject selectExistingElementForTarget(IAdaptable source,
IElementType relationshipType) {
return selectExistingElement(source, getTypesForTarget(source,
relationshipType));
}
/**
* @generated
*/
protected EObject selectExistingElement(IAdaptable host, Collection types) {
if (types.isEmpty()) {
return null;
}
IGraphicalEditPart editPart = (IGraphicalEditPart) host
.getAdapter(IGraphicalEditPart.class);
if (editPart == null) {
return null;
}
Diagram diagram = (Diagram) editPart.getRoot().getContents().getModel();
Collection elements = new HashSet();
for (Iterator it = diagram.getElement().eAllContents(); it.hasNext();) {
EObject element = (EObject) it.next();
if (isApplicableElement(element, types)) {
elements.add(element);
}
}
if (elements.isEmpty()) {
return null;
}
return selectElement((EObject[]) elements.toArray(new EObject[elements
.size()]));
}
/**
* @generated
*/
protected boolean isApplicableElement(EObject element, Collection types) {
IElementType type = ElementTypeRegistry.getInstance().getElementType(
element);
return types.contains(type);
}
/**
* @generated
*/
protected EObject selectElement(EObject[] elements) {
Shell shell = Display.getCurrent().getActiveShell();
ILabelProvider labelProvider = new AdapterFactoryLabelProvider(
MindmapDiagramEditorPlugin.getInstance()
.getItemProvidersAdapterFactory());
ElementListSelectionDialog dialog = new ElementListSelectionDialog(
shell, labelProvider);
dialog.setMessage(Messages.MindmapModelingAssistantProviderMessage);
dialog.setTitle(Messages.MindmapModelingAssistantProviderTitle);
dialog.setMultipleSelection(false);
dialog.setElements(elements);
EObject selected = null;
if (dialog.open() == Window.OK) {
selected = (EObject) dialog.getFirstResult();
}
return selected;
}
}
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