/// <summary>
/// Calculates a label representing <paramref name="page"/>'s <see cref="WebViewPage{TModel}.Model"/>
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <param name="page"></param>
/// <returns></returns>
public static string GetModelLabel <TModel>(this WebViewPage <TModel> page) where TModel : class
{
string label = null;
if (page.Model != null)
{
var controller = page.Controller();
var controllerType = controller.GetType();
// First try to use BootstrapController's label selector
if (controllerType.IsConstructedGenericTypeOfDefinition(typeof(IViewModelLabelSelectorContainer <>)))
{
string ownerPropName =
Of <IViewModelLabelSelectorContainer <IEntityViewModel> > .CodeNameFor(
c => c.ViewModelLabelSelectorOwner);
var ownerProp = controllerType.GetProperty(ownerPropName);
object owner = ownerProp.GetValue(controller);
string selectorPropName =
Of <IViewModelLabelSelectorOwner <IEntityViewModel> > .CodeNameFor(o => o.ViewModelLabelSelector);
var selectorProp = owner.GetType().GetProperty(selectorPropName);
var selector = (Delegate)selectorProp.GetValue(owner);
var modelAsEntityViewModel = (IEntityViewModel)page.Model;
// If there are original values, they take precedence over edited ones.
modelAsEntityViewModel = modelAsEntityViewModel.OriginalValues ??
modelAsEntityViewModel;
label = (string)selector.DynamicInvoke(modelAsEntityViewModel);
}
else
{
// Next try an EntityViewModel's Id
var modelAsEntityViewModel = page.Model as IEntityViewModel;
if (modelAsEntityViewModel != null)
{
label = modelAsEntityViewModel.Id.Value.ToString(CultureInfo.InvariantCulture);
}
else
{
// lastly just use .ToString()
label = page.Model.ToString();
}
}
}
return(label);
}
public static IEnumerable <Breadcrumb> GetBreadcrumbsList <TModel>(this WebViewPage <TModel> page)
where TModel : class
{
var crumbs = new List <Breadcrumb>();
// Begin breadcrumbs with home
crumbs.Add(
new Breadcrumb(
StringHelper.SplitCamelCase(MvcBootstrapConfig.HomeControllerName),
page.Url.Action(HomeControllerAction.Index, MvcBootstrapConfig.HomeControllerName)));
var controller = page.Controller();
string controllerName = controller.Name();
string actionName = page.ActionName();
if (controller.IsHomeController())
{
// Only actions other than Index get a breadcrumb
if (actionName != HomeControllerAction.Index)
{
crumbs.Add(
new Breadcrumb(
StringHelper.SplitCamelCase(actionName),
page.Url.Action(actionName, MvcBootstrapConfig.HomeControllerName)));
}
}
else
{
// Controllers other than home get their own breadcrumb
crumbs.Add(new Breadcrumb(controller.Name(), page.Url.Action(BootstrapActionName.List, controllerName)));
if (controller.IsBootstrapController())
{
// Bootstrap controllers have specific rules for their CRUD actions
switch (page.ActionName())
{
case BootstrapActionName.List:
// The list action is represented by the controller name breadcrumb, already added.
break;
case BootstrapActionName.Create:
// The create action is represented by an additional breadcrumb on the controller
crumbs.Add(
new Breadcrumb(
BootstrapActionName.Create,
page.Url.Action(BootstrapActionName.Create, controllerName)));
break;
case BootstrapActionName.Read:
{
var viewModel = (IEntityViewModel)page.Model;
// The read action is represented by the model's label
crumbs.Add(
new Breadcrumb(
page.GetModelLabel(),
page.Url.Action(BootstrapActionName.Read, controllerName, new { viewModel.Id })));
}
break;
case BootstrapActionName.Update:
{
var viewModel = (IEntityViewModel)page.Model;
// The Update action gets two breadcrumbs: the model's label...
crumbs.Add(
new Breadcrumb(
page.GetModelLabel(),
page.Url.Action(BootstrapActionName.Read, controllerName, new { viewModel.Id })));
// ... and "Update"
crumbs.Add(
new Breadcrumb(
BootstrapActionName.Update,
page.Url.Action(BootstrapActionName.Update, controllerName)));
}
break;
case BootstrapActionName.Delete:
{
var viewModel = (IEntityViewModel)page.Model;
// The Delete action gets two breadcrumbs: the model's label...
crumbs.Add(
new Breadcrumb(
page.GetModelLabel(),
page.Url.Action(
BootstrapActionName.Read, controllerName, new { viewModel.Id })));
// ... and "Delete"
crumbs.Add(
new Breadcrumb(
BootstrapActionName.Delete,
page.Url.Action(BootstrapActionName.Delete, controllerName)));
}
break;
}
}
else
{
// Controllers that are neither Home nor Bootstrap just add their action
crumbs.Add(new Breadcrumb(actionName, page.Url.Action(actionName, controllerName)));
}
}
return(crumbs);
}
