static IEnumerable <PresenterBinding> GetBindings(
IEnumerable <object> hosts,
IEnumerable <IView> candidates,
IPresenterDiscoveryStrategy presenterDiscoveryStrategy,
ITraceContext traceContext)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Finding presenter bindings using {0} for {1} view {2}: {3}",
presenterDiscoveryStrategy.GetType().Name,
candidates.Count(),
candidates.Count() == 1 ? "instance" : "instances",
string.Join(", ", candidates.Select(v => v.GetType().FullName).ToArray())
));
var results = presenterDiscoveryStrategy
.GetBindings(hosts, candidates);
traceContext.Write(typeof(PresenterBinder), () =>
BuildTraceMessagesForBindings(presenterDiscoveryStrategy, results));
ThrowExceptionsForViewsWithNoPresenterBound(results);
return(results
.SelectMany(r => r.Bindings));
}
static IPresenter BuildPresenter(
HttpContextBase httpContext,
ITraceContext traceContext,
IMessageBus messageBus,
Action <IPresenter> presenterCreatedCallback,
IPresenterFactory presenterFactory,
PresenterBinding binding,
IView viewInstance)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Creating presenter of type {0} for view of type {1}. (The actual view instance is of type {2}.)",
binding.PresenterType.FullName,
binding.ViewType.FullName,
viewInstance.GetType().FullName));
var presenter = presenterFactory.Create(binding.PresenterType, binding.ViewType, viewInstance);
presenter.HttpContext = httpContext;
presenter.Messages = messageBus;
if (presenterCreatedCallback != null)
{
presenterCreatedCallback(presenter);
}
return(presenter);
}
/// <summary>
/// Registers a view instance as being a candidate for binding. If
/// <see cref="PerformBinding()"/> has not been called, the view will
/// be queued until that time. If <see cref="PerformBinding()"/> has
/// already been called, binding is attempted instantly.
/// </summary>
public void RegisterView(IView viewInstance)
{
if (viewInstance == null)
{
throw new ArgumentNullException("viewInstance");
}
traceContext.Write(this, () => string.Format(
CultureInfo.InvariantCulture,
"Registering view instance of type {0}.",
viewInstance.GetType().FullName));
viewInstancesRequiringBinding.Add(viewInstance);
// If an initial binding has already been performed, go ahead
// and bind this view straight away. This allows us to bind
// dynamically created controls that are added after Page.Init.
if (initialBindingHasBeenPerformed)
{
PerformBinding();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PresenterBinder"/> class.
/// </summary>
/// <param name="hosts">The array of hosts, useful in scenarios like ASP.NET master pages.</param>
/// <param name="httpContext">The owning HTTP context.</param>
/// <param name="traceContext">The tracing context.</param>
internal PresenterBinder(IEnumerable <object> hosts, HttpContextBase httpContext, ITraceContext traceContext)
{
this.httpContext = httpContext;
this.traceContext = traceContext;
traceContext.Write(this, () => string.Format(
CultureInfo.InvariantCulture,
"Web Forms MVP version is {0}",
libraryVersion = libraryVersion ?? typeof(PresenterBinder).Assembly.GetNameSafe().Version.ToString()));
traceContext.Write(this, () => string.Format(
CultureInfo.InvariantCulture,
"Initializing presenter binder for {0} hosts: {1}",
hosts.Count(),
string.Join(", ", hosts.Select(h => h.GetType().FullName).ToArray())));
this.hosts = hosts.ToList();
foreach (var selfHostedView in hosts.OfType <IView>())
{
RegisterView(selfHostedView);
}
}
internal static IEnumerable <object> FindHosts(Page page, ITraceContext traceContext)
{
traceContext.Write(typeof(PageViewHost), () => "Finding hosts (pages and master pages).");
yield return(page);
var masterHost = page.Master;
while (masterHost != null)
{
yield return(masterHost);
masterHost = masterHost.Master;
}
}
internal static PageViewHost FindViewHost(Control control, HttpContext httpContext, ITraceContext traceContext)
{
traceContext.Write(typeof(PageViewHost), () => "Finding PageViewHost instance.");
var pageContext = control.Page.Items;
if (pageContext.Contains(ViewHostCacheKey))
{
return((PageViewHost)pageContext[ViewHostCacheKey]);
}
var host = new PageViewHost(control.Page, control, httpContext);
pageContext[ViewHostCacheKey] = host;
return(host);
}
internal static IView CreateCompositeView(Type viewType, IEnumerable <IView> childViews, ITraceContext traceContext)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Creating composite view for type {0} based on {1} child views: {2}",
viewType.GetType().FullName,
childViews.Count(),
string.Join(", ", childViews.Select(v => v.GetType().FullName).ToArray())));
var compositeViewType = compositeViewTypeFactory.BuildCompositeViewType(viewType);
var view = (ICompositeView)Activator.CreateInstance(compositeViewType);
foreach (var v in childViews)
{
view.Add(v);
}
return(view);
}
internal static IView CreateCompositeView(Type viewType, IEnumerable<IView> childViews, ITraceContext traceContext)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Creating composite view for type {0} based on {1} child views: {2}",
viewType.GetType().FullName,
childViews.Count(),
string.Join(", ", childViews.Select(v => v.GetType().FullName).ToArray())));
var compositeViewType = compositeViewTypeFactory.BuildCompositeViewType(viewType);
var view = (ICompositeView)Activator.CreateInstance(compositeViewType);
foreach (var v in childViews)
{
view.Add(v);
}
return view;
}
static IPresenter BuildPresenter(
HttpContextBase httpContext,
ITraceContext traceContext,
IMessageBus messageBus,
Action<IPresenter> presenterCreatedCallback,
IPresenterFactory presenterFactory,
PresenterBinding binding,
IView viewInstance)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Creating presenter of type {0} for view of type {1}. (The actual view instance is of type {2}.)",
binding.PresenterType.FullName,
binding.ViewType.FullName,
viewInstance.GetType().FullName));
var presenter = presenterFactory.Create(binding.PresenterType, binding.ViewType, viewInstance);
presenter.HttpContext = httpContext;
presenter.Messages = messageBus;
if (presenterCreatedCallback != null)
{
presenterCreatedCallback(presenter);
}
return presenter;
}
static IEnumerable<PresenterBinding> GetBindings(
IEnumerable<object> hosts,
IEnumerable<IView> candidates,
IPresenterDiscoveryStrategy presenterDiscoveryStrategy,
ITraceContext traceContext)
{
traceContext.Write(typeof(PresenterBinder), () => string.Format(
CultureInfo.InvariantCulture,
"Finding presenter bindings using {0} for {1} view {2}: {3}",
presenterDiscoveryStrategy.GetType().Name,
candidates.Count(),
candidates.Count() == 1 ? "instance" : "instances",
string.Join(", ", candidates.Select(v => v.GetType().FullName).ToArray())
));
var results = presenterDiscoveryStrategy
.GetBindings(hosts, candidates);
traceContext.Write(typeof(PresenterBinder), () =>
BuildTraceMessagesForBindings(presenterDiscoveryStrategy, results));
ThrowExceptionsForViewsWithNoPresenterBound(results);
return results
.SelectMany(r => r.Bindings);
}
/// <summary>
/// Initializes a new instance of the <see cref="PresenterBinder"/> class.
/// </summary>
/// <param name="hosts">The array of hosts, useful in scenarios like ASP.NET master pages.</param>
/// <param name="httpContext">The owning HTTP context.</param>
/// <param name="traceContext">The tracing context.</param>
internal PresenterBinder(IEnumerable<object> hosts, HttpContextBase httpContext, ITraceContext traceContext)
{
this.httpContext = httpContext;
this.traceContext = traceContext;
traceContext.Write(this, () => string.Format(
CultureInfo.InvariantCulture,
"Web Forms MVP version is {0}",
libraryVersion = libraryVersion ?? typeof(PresenterBinder).Assembly.GetNameSafe().Version.ToString()));
traceContext.Write(this, () => string.Format(
CultureInfo.InvariantCulture,
"Initializing presenter binder for {0} hosts: {1}",
hosts.Count(),
string.Join(", ", hosts.Select(h => h.GetType().FullName).ToArray())));
this.hosts = hosts.ToList();
foreach (var selfHostedView in hosts.OfType<IView>())
{
RegisterView(selfHostedView);
}
}
