package org.eclipse.gmf.tooling.runtime.linklf.editpolicies;
import java.util.Iterator;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
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.gef.requests.CreateConnectionRequest;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.common.core.util.StringStatics;
import org.eclipse.gmf.runtime.diagram.core.commands.SetConnectionAnchorsCommand;
import org.eclipse.gmf.runtime.diagram.core.commands.SetConnectionEndsCommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.INodeEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.GraphicalNodeEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.internal.commands.SetConnectionBendpointsCommand;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.gef.ui.figures.NodeFigure;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.eclipse.gmf.runtime.notation.Routing;
import org.eclipse.gmf.runtime.notation.RoutingStyle;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.gmf.tooling.runtime.linklf.SlidableSnapToGridAnchor;
public class LinksLFGraphicalNodeEditPolicy extends GraphicalNodeEditPolicy {
private static final String PARAM_SOURCE_ANCHOR = LinksLFGraphicalNodeEditPolicy.class.getName() + ":SourceAnchor";
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy#getReconnectTargetCommand(org.eclipse.gef.requests.ReconnectRequest)
*/
protected Command getReconnectTargetCommand(ReconnectRequest request) {
INodeEditPart node = getConnectableEditPart();
if (node == null)
return null;
TransactionalEditingDomain editingDomain = getEditingDomain();
ConnectionAnchor targetAnchor = getConnectionTargetAnchor(request);
INodeEditPart targetEP = getConnectionCompleteEditPart(request);
if (targetEP == null) {
return null;
}
SetConnectionEndsCommand sceCommand = new SetConnectionEndsCommand(editingDomain, StringStatics.BLANK);
sceCommand.setEdgeAdaptor(new EObjectAdapter((EObject) request.getConnectionEditPart().getModel()));
sceCommand.setNewTargetAdaptor(targetEP);
SetConnectionAnchorsCommand scaCommand = new SetConnectionAnchorsCommand(editingDomain, StringStatics.BLANK);
scaCommand.setEdgeAdaptor(new EObjectAdapter((EObject) request.getConnectionEditPart().getModel()));
scaCommand.setNewTargetTerminal(targetEP.mapConnectionAnchorToTerminal(targetAnchor));
CompositeCommand cc = new CompositeCommand(DiagramUIMessages.Commands_SetConnectionEndsCommand_Target);
cc.compose(sceCommand);
cc.compose(scaCommand);
Command cmd = new ICommandProxy(cc);
EditPart cep = request.getConnectionEditPart();
RoutingStyle style = (RoutingStyle) ((View) cep.getModel()).getStyle(NotationPackage.eINSTANCE.getRoutingStyle());
Routing currentRouter = Routing.MANUAL_LITERAL;
if (style != null) {
currentRouter = style.getRouting();
}
Command cmdRouter = getRoutingAdjustment(request.getConnectionEditPart(), getSemanticHint(request), currentRouter, request.getTarget());
if (cmdRouter != null) {
cmd = cmd == null ? cmdRouter : cmd.chain(cmdRouter);
// reset the bendpoints
ConnectionAnchor sourceAnchor = node.getSourceConnectionAnchor(request);
PointList pointList = new PointList();
pointList.addPoint(sourceAnchor.getLocation(targetAnchor.getReferencePoint()));
pointList.addPoint(targetAnchor.getLocation(sourceAnchor.getReferencePoint()));
SetConnectionBendpointsCommand sbbCommand = new SetAbsoluteBendpointsCommand(editingDomain);
sbbCommand.setEdgeAdapter(request.getConnectionEditPart());
sbbCommand.setNewPointList(pointList, sourceAnchor.getReferencePoint(), targetAnchor.getReferencePoint());
Command cmdBP = new ICommandProxy(sbbCommand);
if (cmdBP != null) {
cmd = cmd == null ? cmdBP : cmd.chain(cmdBP);
}
}
return cmd;
}
@Override
protected Command getConnectionCompleteCommand(CreateConnectionRequest request) {
Command result = super.getConnectionCompleteCommand(request);
if (result == null) {
return result;
}
ICommandProxy proxy = (ICommandProxy) request.getStartCommand();
if (proxy == null) {
return null;
}
CompositeCommand cc = (CompositeCommand) proxy.getICommand();
Iterator<?> commandItr = cc.iterator();
commandItr.next(); //0 - CreateCommand
commandItr.next(); //1 - SetConnectionEndsCommand
SetConnectionAnchorsCommand scaCommand = (SetConnectionAnchorsCommand) commandItr.next(); //2
ConnectionAnchor targetAnchor = getConnectionCompleteEditPart(request).getTargetConnectionAnchor(request);
ConnectionAnchor sourceAnchor = (ConnectionAnchor) request.getExtendedData().get(PARAM_SOURCE_ANCHOR);
if (targetAnchor instanceof SlidableSnapToGridAnchor && sourceAnchor instanceof SlidableSnapToGridAnchor) {
SlidableSnapToGridAnchor sourceAnchorImpl = (SlidableSnapToGridAnchor) sourceAnchor;
SlidableSnapToGridAnchor targetAnchorImpl = (SlidableSnapToGridAnchor) targetAnchor;
Point updatedSourceLoc = sourceAnchorImpl.getLocation(targetAnchorImpl.getReferencePoint());
Point updatedTargetLoc = targetAnchorImpl.getLocation(updatedSourceLoc);
INodeEditPart targetEP = getConnectionCompleteEditPart(request);
INodeEditPart sourceEP = (INodeEditPart) request.getSourceEditPart();
NodeFigure sourceFigure = (NodeFigure) sourceEP.getFigure();
NodeFigure targetFigure = (NodeFigure) targetEP.getFigure();
ConnectionAnchor updatedSourceAnchor = sourceFigure.getSourceConnectionAnchorAt(updatedSourceLoc);
ConnectionAnchor updatedTargetAnchor = targetFigure.getTargetConnectionAnchorAt(updatedTargetLoc);
scaCommand.setNewSourceTerminal(sourceEP.mapConnectionAnchorToTerminal(updatedSourceAnchor));
scaCommand.setNewTargetTerminal(targetEP.mapConnectionAnchorToTerminal(updatedTargetAnchor));
}
return result;
}
protected Command getConnectionCreateCommand(CreateConnectionRequest request) {
if (!(request instanceof CreateConnectionViewRequest))
return null;
CreateConnectionViewRequest req = (CreateConnectionViewRequest) request;
CompositeCommand cc = new CompositeCommand(DiagramUIMessages.Commands_CreateCommand_Connection_Label);
Diagram diagramView = ((View) getHost().getModel()).getDiagram();
TransactionalEditingDomain editingDomain = getEditingDomain();
CreateCommand createCommand = new CreateCommand(editingDomain, req.getConnectionViewDescriptor(), diagramView.getDiagram());
setViewAdapter((IAdaptable) createCommand.getCommandResult().getReturnValue());
SetConnectionEndsCommand sceCommand = new SetConnectionEndsCommand(editingDomain, StringStatics.BLANK);
sceCommand.setEdgeAdaptor(getViewAdapter());
sceCommand.setNewSourceAdaptor(new EObjectAdapter(getView()));
ConnectionAnchor sourceAnchor = getConnectableEditPart().getSourceConnectionAnchor(request);
SetConnectionAnchorsCommand scaCommand = new SetConnectionAnchorsCommand(editingDomain, StringStatics.BLANK);
scaCommand.setEdgeAdaptor(getViewAdapter());
scaCommand.setNewSourceTerminal(getConnectableEditPart().mapConnectionAnchorToTerminal(sourceAnchor));
SetConnectionBendpointsCommand sbbCommand = new SetAbsoluteBendpointsCommand(editingDomain);
sbbCommand.setEdgeAdapter(getViewAdapter());
cc.compose(createCommand);
cc.compose(sceCommand);
cc.compose(scaCommand);
cc.compose(sbbCommand);
Command c = new ICommandProxy(cc);
request.setStartCommand(c);
//additionally storing source anchor to allow recomputation
request.getExtendedData().put(PARAM_SOURCE_ANCHOR, sourceAnchor);
return c;
}
protected final TransactionalEditingDomain getEditingDomain() {
return ((IGraphicalEditPart) getHost()).getEditingDomain();
}
}
