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/**
* Copyright (c) 2014, 2015 CEA LIST, Christian W. Damus, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
* Christian W. Damus - bug 477384
*/
package org.eclipse.papyrus.uml.diagram.statemachine.custom.policies;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.FigureUtilities;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.RectangleFigure;
import org.eclipse.draw2d.Shape;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PrecisionRectangle;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editparts.LayerManager;
import org.eclipse.gef.requests.ChangeBoundsRequest;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GroupEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.LabelEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeCompartmentEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateUnspecifiedTypeRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.emf.gmf.command.EMFtoGMFCommandWrapper;
import org.eclipse.papyrus.infra.gmfdiag.common.adapter.SemanticAdapter;
import org.eclipse.papyrus.uml.diagram.statemachine.custom.commands.CustomRegionCreateElementCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.custom.commands.EMFCustomTransitionRetargetContainerCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.custom.figures.RegionFigure;
import org.eclipse.papyrus.uml.diagram.statemachine.custom.helpers.Zone;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.parts.RegionEditPart;
import org.eclipse.papyrus.uml.diagram.statemachine.providers.UMLElementTypes;
import org.eclipse.uml2.uml.State;
import org.eclipse.uml2.uml.Transition;
public class CustomRegionCompartmentCreationEditPolicy extends CreationEditPolicy {
IFigure sizeOnDropFeedback = null;
String dropLocation = Zone.RIGHT;
@Override
public void eraseTargetFeedback(Request request) {
if (sizeOnDropFeedback != null) {
LayerManager.Helper.find(getHost()).getLayer(LayerConstants.FEEDBACK_LAYER).remove(sizeOnDropFeedback);
sizeOnDropFeedback = null;
}
}
@Override
protected Command getReparentCommand(ChangeBoundsRequest changeBoundsRequest) {
View container = getHost().getAdapter(View.class);
EObject context = container == null ? null : ViewUtil.resolveSemanticElement(container);
CompositeCommand cc = new CompositeCommand("move (re-parent) state");
Iterator<?> it = changeBoundsRequest.getEditParts().iterator();
while (it.hasNext()) {
Object next = it.next();
if (next instanceof EditPart) {
EditPart ep = (EditPart) next;
if (ep instanceof LabelEditPart) {
continue;
}
if (ep instanceof GroupEditPart) {
cc.compose(getReparentGroupCommand((GroupEditPart) ep));
}
View view = ep.getAdapter(View.class);
if (view == null) {
continue;
}
EObject semantic = ViewUtil.resolveSemanticElement(view);
if (semantic == null) {
cc.compose(getReparentViewCommand((IGraphicalEditPart) ep));
} else if (context != null && shouldReparent(semantic, context)) {
cc.compose(getReparentCommand((IGraphicalEditPart) ep));
if (semantic instanceof State) {
State state = (State) semantic;
// correct container of transitions
for (Transition transition : state.getOutgoings()) {
cc.compose(new EMFtoGMFCommandWrapper(
new EMFCustomTransitionRetargetContainerCommand(transition)));
}
for (Transition transition : state.getIncomings()) {
cc.compose(new EMFtoGMFCommandWrapper(
new EMFCustomTransitionRetargetContainerCommand(transition)));
}
}
}
}
}
return cc.isEmpty() ? null : new ICommandProxy(cc.reduce());
// return super.getReparentCommand(request);
}
@Override
public Command getCommand(Request request) {
// CHECK THIS
TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost()).getEditingDomain();
CompositeTransactionalCommand cc = new CompositeTransactionalCommand(editingDomain, DiagramUIMessages.AddCommand_Label);
if (understandsRequest(request)) {
if (request instanceof CreateUnspecifiedTypeRequest) {
CreateUnspecifiedTypeRequest unspecReq = (CreateUnspecifiedTypeRequest) request;
for (Iterator<?> iter = unspecReq.getElementTypes().iterator(); iter.hasNext();) {
IElementType elementType = (IElementType) iter.next();
if (((IHintedType) elementType).getSemanticHint().equals(((IHintedType) UMLElementTypes.Region_Shape).getSemanticHint())) {
// starting point is the existing region compartment on
// which mouse was moving
View existingRegionCompartmentView = (View) getHost().getModel();
// the existing region view
View existingRegionView = (View) existingRegionCompartmentView.eContainer();
// get and adaptable for it, to pass on to commands
IAdaptable adaptableForExistingRegionView = new SemanticAdapter(null, existingRegionView);
// do the whole job
CustomRegionCreateElementCommand createNewRegion = new CustomRegionCreateElementCommand(adaptableForExistingRegionView, null, ((IGraphicalEditPart) getHost()).getDiagramPreferencesHint(), editingDomain,
DiagramUIMessages.CreateCommand_Label, dropLocation);
cc.compose(createNewRegion);
return new ICommandProxy(cc.reduce());
}
}
} else if (request instanceof CreateViewRequest) {
CreateViewRequest create = (CreateViewRequest) request;
for (CreateViewRequest.ViewDescriptor descriptor : create.getViewDescriptors()) {
if (((IHintedType) UMLElementTypes.Region_Shape).getSemanticHint().equals(descriptor.getSemanticHint())) {
// Creating a region view as a sibling of the region owning this compartment
IAdaptable compartment = new SemanticAdapter(null, ((View) getHost().getModel()).eContainer());
// Create the view with a reasonable initial layout
CustomRegionCreateElementCommand command = new CustomRegionCreateElementCommand(
compartment, descriptor.getElementAdapter(),
((IGraphicalEditPart) getHost()).getDiagramPreferencesHint(),
editingDomain, DiagramUIMessages.CreateCommand_Label, dropLocation);
cc.compose(command);
}
}
// It's all-or-nothing: if anything besides regions were being created (which
// would be an odd sort of a compound request), then only the regions will be
if (!cc.isEmpty()) {
return new ICommandProxy(cc.reduce());
} else {
return super.getCommand(request);
}
} else if (request instanceof ChangeBoundsRequest) {
return getReparentCommand((ChangeBoundsRequest) request);
/*
* ChangeBoundsRequest changeBoundsRequest = (ChangeBoundsRequest)request;
* Point mouseLocation = changeBoundsRequest.getLocation();
*
* DropObjectsRequest dropRequest = new DropObjectsRequest();
* dropRequest.setLocation(mouseLocation);
*
* List<View> list = new ArrayList<View>();
* Iterator<EditPart> it = changeBoundsRequest.getEditParts().iterator();
* while(it.hasNext()) {
* EditPart ep = it.next();
* if(ep instanceof RegionEditPart) {
* View regionToDrag = (View)ep.getModel();
* list.add(regionToDrag);
* }
* }
* View container = (View)getHost().getAdapter(View.class);
* EObject context = container == null ? null : ViewUtil.resolveSemanticElement(container);
* dropRequest.setObjects(list);
* return getHost().getCommand(dropRequest);
*/
}
return super.getCommand(request);
}
return null;
}
protected IFigure getSizeOnDropFeedback() {
if (sizeOnDropFeedback == null) {
sizeOnDropFeedback = new RectangleFigure();
FigureUtilities.makeGhostShape((Shape) sizeOnDropFeedback);
((Shape) sizeOnDropFeedback).setLineStyle(Graphics.LINE_DASHDOT);
sizeOnDropFeedback.setForegroundColor(ColorConstants.white);
LayerManager.Helper.find(getHost()).getLayer(LayerConstants.FEEDBACK_LAYER).add(sizeOnDropFeedback);
}
return sizeOnDropFeedback;
}
@Override
public EditPart getTargetEditPart(Request request) {
if (request instanceof CreateUnspecifiedTypeRequest) {
CreateUnspecifiedTypeRequest createUnspecifiedTypeRequest = (CreateUnspecifiedTypeRequest) request;
if (understandsRequest(request)) {
List<?> elementTypes = createUnspecifiedTypeRequest.getElementTypes();
// Treat the case where only one element type is listed
// Only take EntryPoint or ExitPoint element type into account
if ((elementTypes.size() == 1) && (((IElementType) (elementTypes.get(0)) == UMLElementTypes.Pseudostate_EntryPointShape) || ((IElementType) (elementTypes.get(0)) == UMLElementTypes.Pseudostate_ExitPointShape))) {
// If the target is a compartment replace by its grand parent edit part
if ((getHost() instanceof ShapeCompartmentEditPart)) {
return getHost().getParent().getParent().getParent();
}
}
}
}
return super.getTargetEditPart(request);
}
@Override
public void showTargetFeedback(Request request) {
if (request instanceof CreateUnspecifiedTypeRequest) {
CreateUnspecifiedTypeRequest unspecReq = (CreateUnspecifiedTypeRequest) request;
for (Iterator<?> iter = unspecReq.getElementTypes().iterator(); iter.hasNext();) {
IElementType elementType = (IElementType) iter.next();
if (elementType.equals(UMLElementTypes.Region_Shape)) {
RegionFigure targetFig = ((RegionEditPart) getHost().getParent()).getPrimaryShape();
// make a local copy
Rectangle targetFigBounds = targetFig.getBounds().getCopy();
// transform the coordinates to absolute
targetFig.translateToAbsolute(targetFigBounds);
// retrieve mouse location
Point mouseLocation = unspecReq.getLocation();
// get the drop location, i.e. RIGHT, LEFT, TOP, BOTTOM
dropLocation = Zone.getZoneFromLocationInRectangleWithAbsoluteCoordinates(mouseLocation, targetFigBounds);
// perform corresponding change (scaling, translation) on
// targetFigBounds
// and updates the graph node drop location property
if (Zone.isTop(dropLocation)) {
targetFigBounds.setSize(targetFigBounds.getSize().scale(1.0, 0.5));
} else if (Zone.isLeft(dropLocation)) {
targetFigBounds.setSize(targetFigBounds.getSize().scale(0.5, 1.0));
} else if (Zone.isRight(dropLocation)) {
targetFigBounds.setSize(targetFigBounds.getSize().scale(0.5, 1.0));
targetFigBounds.translate(targetFigBounds.width, 0);
} else if (Zone.isBottom(dropLocation)) {
targetFigBounds.setSize(targetFigBounds.getSize().scale(1.0, 0.5));
targetFigBounds.translate(0, targetFigBounds.height);
}
getSizeOnDropFeedback().setBounds(new PrecisionRectangle(targetFigBounds));
}
}
}
}
}
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