private void ApplyImplementation(BuildShapeContext context, string displayType)
{
var placement = context.FindPlacement(_shapeType, _differentiator, _defaultLocation);
if (string.IsNullOrEmpty(placement.Location) || placement.Location == "-")
return;
dynamic parentShape = context.Shape;
context.ContentPart = ContentPart;
var newShape = _shapeBuilder(context);
// ignore it if the driver returned a null shape
if(newShape == null) {
return;
}
// add a ContentPart property to the final shape
if (ContentPart != null && newShape.ContentPart == null) {
newShape.ContentPart = ContentPart;
}
// add a ContentField property to the final shape
if (ContentField != null && newShape.ContentField == null) {
newShape.ContentField = ContentField;
}
ShapeMetadata newShapeMetadata = newShape.Metadata;
newShapeMetadata.Prefix = _prefix;
newShapeMetadata.DisplayType = displayType;
newShapeMetadata.PlacementSource = placement.Source;
// if a specific shape is provided, remove all previous alternates and wrappers
if (!String.IsNullOrEmpty(placement.ShapeType)) {
newShapeMetadata.Type = placement.ShapeType;
newShapeMetadata.Alternates.Clear();
newShapeMetadata.Wrappers.Clear();
}
// parse group placement
var group = placement.GetGroup();
if (!String.IsNullOrEmpty(group)) {
_groupId = group;
}
if (!string.Equals(context.GroupId ?? "", _groupId ?? "", StringComparison.OrdinalIgnoreCase))
return;
foreach (var alternate in placement.Alternates) {
newShapeMetadata.Alternates.Add(alternate);
}
foreach (var wrapper in placement.Wrappers) {
newShapeMetadata.Wrappers.Add(wrapper);
}
// the zone name is in reference of Layout, e.g. /AsideSecond
if (placement.IsLayoutZone()) {
parentShape = context.Layout;
}
var position = placement.GetPosition();
var zone = placement.GetZone();
if (String.IsNullOrEmpty(position)) {
parentShape.Zones[zone].Add(newShape);
}
else {
parentShape.Zones[zone].Add(newShape, position);
}
}
private void BindPlacement(BuildShapeContext context, string displayType, string stereotype)
{
context.FindPlacement = (partShapeType, differentiator, defaultLocation) => {
var workContext = _workContextAccessor.GetContext(_requestContext.HttpContext);
var theme = workContext.CurrentTheme;
var shapeTable = _shapeTableLocator.Value.Lookup(theme.Id);
var request = _requestContext.HttpContext.Request;
ShapeDescriptor descriptor;
if (shapeTable.Descriptors.TryGetValue(partShapeType, out descriptor)) {
var placementContext = new ShapePlacementContext {
Content = context.ContentItem,
ContentType = context.ContentItem.ContentType,
Stereotype = stereotype,
DisplayType = displayType,
Differentiator = differentiator,
Path = VirtualPathUtility.AppendTrailingSlash(_virtualPathProvider.ToAppRelative(request.Path)) // get the current app-relative path, i.e. ~/my-blog/foo
};
// define which location should be used if none placement is hit
descriptor.DefaultPlacement = defaultLocation;
var placement = descriptor.Placement(placementContext);
if (placement != null) {
placement.Source = placementContext.Source;
return placement;
}
}
return new PlacementInfo {
Location = defaultLocation,
Source = String.Empty
};
};
}