@Override protected Command createChangeConstraintCommand( ChangeBoundsRequest request, EditPart child, Object constraint) { BControlChangeLayoutCommand cmd = new BControlChangeLayoutCommand(); BControl part = (BControl) child.getModel(); cmd.setModel(child.getModel()); cmd.setConstraint((Rectangle) constraint); Command result = cmd; if ((request.getResizeDirection() & PositionConstants.NORTH_SOUTH) != 0) { Integer guidePos = (Integer) request.getExtendedData().get(SnapToGuides.KEY_HORIZONTAL_GUIDE); if (guidePos != null) { result = chainGuideAttachmentCommand(request, part, result, true); } else if (part.getHorizontalGuide() != null) { // SnapToGuides didn't provide a horizontal guide, but this part // is attached // to a horizontal guide. Now we check to see if the part is // attached to // the guide along the edge being resized. If that is the case, // we need to // detach the part from the guide; otherwise, we leave it alone. int alignment = part.getHorizontalGuide().getAlignment(part); int edgeBeingResized = 0; if ((request.getResizeDirection() & PositionConstants.NORTH) != 0) edgeBeingResized = -1; else edgeBeingResized = 1; if (alignment == edgeBeingResized) result = result.chain(new ChangeGuideCommand(part, true)); } } if ((request.getResizeDirection() & PositionConstants.EAST_WEST) != 0) { Integer guidePos = (Integer) request.getExtendedData().get(SnapToGuides.KEY_VERTICAL_GUIDE); if (guidePos != null) { result = chainGuideAttachmentCommand(request, part, result, false); } else if (part.getVerticalGuide() != null) { int alignment = part.getVerticalGuide().getAlignment(part); int edgeBeingResized = 0; if ((request.getResizeDirection() & PositionConstants.WEST) != 0) edgeBeingResized = -1; else edgeBeingResized = 1; if (alignment == edgeBeingResized) result = result.chain(new ChangeGuideCommand(part, false)); } } if (request.getType().equals(REQ_MOVE_CHILDREN) || request.getType().equals(REQ_ALIGN_CHILDREN)) { result = chainGuideAttachmentCommand(request, part, result, true); result = chainGuideAttachmentCommand(request, part, result, false); result = chainGuideDetachmentCommand(request, part, result, true); result = chainGuideDetachmentCommand(request, part, result, false); } return result; }
/* * (non-Javadoc) * * @see org.eclipse.gef.commands.Command#canExecute() */ @Override public boolean canExecute() { final Object type = request.getType(); // make sure the Request is of a type we support: return (RequestConstants.REQ_MOVE.equals(type) || RequestConstants.REQ_MOVE_CHILDREN.equals(type) || RequestConstants.REQ_RESIZE.equals(type) || RequestConstants.REQ_RESIZE_CHILDREN.equals(type)); }
private ChangeBoundsRequest initConstrainedRequest(ChangeBoundsRequest request) { ChangeBoundsRequest req = new ChangeBoundsRequest(); req.setConstrainedResize(true); req.setConstrainedMove(true); req.setType(request.getType()); req.setResizeDirection(request.getResizeDirection()); req.getExtendedData().put(REGION_RESIZE_PROPAGATOR, getHost()); req.getExtendedData() .put( SiriusResizeTracker.CHILDREN_MOVE_MODE_KEY, request.getExtendedData().get(SiriusResizeTracker.CHILDREN_MOVE_MODE_KEY)); req.getExtendedData().put(REGION_RESIZE_INITIAL_REQUEST, request); return req; }
// @unused public static Request getNewSourceFeedbackRequest(Request request, ShapeNodeEditPart editPart) { if (request instanceof ChangeBoundsRequest) { ChangeBoundsRequest currRequest = (ChangeBoundsRequest) request; Dimension oldDelta = currRequest.getSizeDelta(); Dimension newDelta = getSizeDeltaToFitAnchors(editPart, oldDelta, PreserveAnchorsPositionCommand.PRESERVE_Y); // Information for creating a new ChangeBoundsRequest has been taken // from org.eclipse.gef.editpolicies.ResizableEditPolicy ChangeBoundsRequest newRequest = new ChangeBoundsRequest(); newRequest.setMoveDelta(currRequest.getMoveDelta()); newRequest.setSizeDelta(newDelta); newRequest.setLocation(currRequest.getLocation()); newRequest.setExtendedData(currRequest.getExtendedData()); newRequest.setResizeDirection(currRequest.getResizeDirection()); newRequest.setType(currRequest.getType()); return newRequest; } else { return request; } }