/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public override void OnNavigateTo(NavigatorPluginContext context, object view, object target)
{
var parameters = context.LoadOr(GetType(), default(Dictionary <string, object>));
if (parameters != null)
{
ApplyImportParameters(target, parameters);
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public override void OnDispose(NavigatorPluginContext context, object view, object target)
{
foreach (var member in cache.GetAttributeMembers(target.GetType()))
{
var key = member.Attribute.Key ?? member.MemberType.FullName;
Reference reference;
if (!store.TryGetValue(key, out reference))
{
continue;
}
reference.Counter--;
if (reference.Counter != 0)
{
continue;
}
(reference.Context as IViewContextSupport)?.Cleanup();
store.Remove(key);
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public override void OnCreate(NavigatorPluginContext context, object view, object target)
{
foreach (var member in cache.GetAttributeMembers(target.GetType()))
{
var key = member.Attribute.Key ?? member.MemberType.FullName;
Reference reference;
if (!store.TryGetValue(key, out reference))
{
reference = new Reference
{
Context = context.Factory.Create(member.Attribute.Context ?? member.MemberType)
};
(reference.Context as IViewContextSupport)?.Initilize();
store[key] = reference;
}
reference.Counter++;
member.SetValue(target, reference.Context);
}
}
/// <summary>
///
/// </summary>
/// <param name="id"></param>
public void Forward(object id)
{
Type type;
if (!idToViewType.TryGetValue(id, out type))
{
return;
}
var navigationContext = new NavigatingContext
{
PreviousViewId = CurrentViewId,
PreviousView = CurrentView,
PreviousTarget = CurrentTarget,
ViewId = id
};
var pluginContext = new NavigatorPluginContext(Factory);
// From
if (navigationContext.PreviousView != null)
{
(Provider.ResolveEventTarget(navigationContext.PreviousView) as IViewEventSupport)?.OnViewNavigateFrom(navigationContext);
foreach (var plugin in Plugins)
{
plugin.OnNavigateFrom(pluginContext, navigationContext.PreviousView, navigationContext.PreviousTarget);
}
}
// Create
var view = Factory.Create(type);
var target = Provider.ResolveEventTarget(view);
foreach (var plugin in Plugins)
{
plugin.OnCreate(pluginContext, view, target);
}
// Update
navigationContext.View = view;
navigationContext.Target = target;
CurrentViewId = id;
CurrentView = view;
CurrentTarget = target;
// Injection
var aware = navigationContext.Target as INavigatorAware;
if (aware != null)
{
aware.Navigator = this;
}
// Event
Navigating?.Invoke(this, new NavigatingEventArgs {
Context = navigationContext
});
// Switch
Provider.ViewSwitch(view);
// To
foreach (var plugin in Plugins)
{
plugin.OnNavigateTo(pluginContext, CurrentView, CurrentTarget);
}
(navigationContext.Target as IViewEventSupport)?.OnViewNavigateTo(navigationContext);
// Dispose Old
if (navigationContext.PreviousView != null)
{
foreach (var plugin in Plugins)
{
plugin.OnDispose(pluginContext, navigationContext.PreviousView, navigationContext.PreviousTarget);
}
Provider.ViewDispose(navigationContext.PreviousView);
(navigationContext.PreviousView as IDisposable)?.Dispose();
(navigationContext.PreviousTarget as IDisposable)?.Dispose();
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public virtual void OnNavigateTo(NavigatorPluginContext context, object view, object target)
{
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public virtual void OnDispose(NavigatorPluginContext context, object view, object target)
{
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="view"></param>
/// <param name="target"></param>
public override void OnNavigateFrom(NavigatorPluginContext context, object view, object target)
{
context.Save(GetType(), GatherExportParameters(target));
}
