Base class used to create ViewModel objects that implement their own commands/verbs/actions. More...

Inheritance diagram for Csla.Xaml.ViewModelBase< T >:

Public Member Functions
virtual async Task< T >	RefreshAsync< F > (Func< Task< T > > factory)
	Creates or retrieves a new instance of the Model by invoking an action. More...

virtual async Task< T >	SaveAsync ()
	Saves the Model, first committing changes if ManagedObjectLifetime is true. More...

Static Public Attributes
static readonly DependencyProperty	ModelProperty
	Gets or sets the Model object. More...

static readonly DependencyProperty	ManageObjectLifetimeProperty
	Gets or sets a value indicating whether the ViewModel should automatically managed the lifetime of the Model. More...

Protected Member Functions
virtual void	DoCancel ()
	Cancels changes made to the model if ManagedObjectLifetime is true. More...

virtual object	DoAddNew ()
	Adds a new item to the Model (if it is a collection). More...

virtual void	DoRemove (object item)
	Removes an item from the Model (if it is a collection). More...

virtual void	DoDelete ()
	Marks the Model for deletion (if it is an editable root object). More...

virtual void	OnModelChanged (T oldValue, T newValue)
	Invoked when the Model changes, allowing event handlers to be unhooked from the old object and hooked on the new object. More...

void	UnhookChangedEvents (T model)
	Unhooks changed event handlers from the model. More...

virtual void	OnSetProperties ()
	Override this method to hook into to logic of setting properties when model is changed or edited. More...

virtual void	OnPropertyChanged (string propertyName)
	Raise the PropertyChanged event. More...

Properties
T	Model `[getset]`
	Gets or sets the Model object. More...

bool	ManageObjectLifetime `[getset]`
	Gets or sets a value indicating whether the ViewManageObjectLifetime should automatically managed the lifetime of the ManageObjectLifetime. More...

bool	IsBusy `[getprotected set]`
	Gets a value indicating whether this object is executing an asynchronous process. More...

virtual bool	IsDirty `[getprotected set]`
	Gets a value indicating whether the Model has been changed. More...

virtual bool	IsValid `[getprotected set]`
	Gets a value indicating whether the Model is currently valid (has no broken rules). More...

virtual bool	CanSave `[getprotected set]`
	Gets a value indicating whether the Model can currently be saved. More...

virtual bool	CanCancel `[getprotected set]`
	Gets a value indicating whether the Model can currently be canceled. More...

virtual bool	CanCreate `[getprotected set]`
	Gets a value indicating whether an instance of the Model can currently be created. More...

virtual bool	CanDelete `[getprotected set]`
	Gets a value indicating whether the Model can currently be deleted. More...

virtual bool	CanFetch `[getprotected set]`
	Gets a value indicating whether an instance of the Model can currently be retrieved. More...

virtual bool	CanRemove `[getprotected set]`
	Gets a value indicating whether the Model can currently be removed. More...

virtual bool	CanAddNew `[getprotected set]`
	Gets a value indicating whether the Model can currently be added. More...

virtual bool	CanCreateObject `[getprotected set]`
	Gets a value indicating whether the current user is authorized to create a Model. More...

virtual bool	CanGetObject `[getprotected set]`
	Gets a value indicating whether the current user is authorized to retrieve a Model. More...

virtual bool	CanEditObject `[getprotected set]`
	Gets a value indicating whether the current user is authorized to save (insert or update a Model. More...

virtual bool	CanDeleteObject `[getprotected set]`
	Gets a value indicating whether the current user is authorized to delete a Model. More...

Properties inherited from Csla.Xaml.IViewModel
object	Model `[getset]`
	Gets or sets the Model property of the viewmodel object. More...

Events
PropertyChangedEventHandler	PropertyChanged
	Event raised when a property changes. More...

Detailed Description

Base class used to create ViewModel objects that implement their own commands/verbs/actions.

Template Parameters

T	Type of the Model object.

Definition at line 37 of file Csla.Xaml.Shared/ViewModelBase.cs.

Member Function Documentation

◆ DoAddNew()

virtual object Csla.Xaml.ViewModelBase< T >.DoAddNew ( )

protectedvirtual

Adds a new item to the Model (if it is a collection).

Definition at line 633 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ DoCancel()

virtual void Csla.Xaml.ViewModelBase< T >.DoCancel ( )

protectedvirtual

Cancels changes made to the model if ManagedObjectLifetime is true.

Definition at line 583 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ DoDelete()

virtual void Csla.Xaml.ViewModelBase< T >.DoDelete ( )

protectedvirtual

Marks the Model for deletion (if it is an editable root object).

Definition at line 666 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ DoRemove()

virtual void Csla.Xaml.ViewModelBase< T >.DoRemove ( object item )

protectedvirtual

Removes an item from the Model (if it is a collection).

Definition at line 656 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ OnModelChanged()

virtual void Csla.Xaml.ViewModelBase< T >.OnModelChanged	(	T	oldValue,
		T	newValue
	)

protectedvirtual

Invoked when the Model changes, allowing event handlers to be unhooked from the old object and hooked on the new object.

Parameters

oldValue	Previous Model reference.
newValue	New Model reference.

Definition at line 678 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ OnPropertyChanged()

virtual void Csla.Xaml.ViewModelBase< T >.OnPropertyChanged ( string propertyName )

protectedvirtual

Raise the PropertyChanged event.

Parameters

propertyName Name of the changed property.

Definition at line 787 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ OnSetProperties()

virtual void Csla.Xaml.ViewModelBase< T >.OnSetProperties ( )

protectedvirtual

Override this method to hook into to logic of setting properties when model is changed or edited.

Definition at line 742 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ RefreshAsync< F >()

virtual async Task< T > Csla.Xaml.ViewModelBase< T >.RefreshAsync< F > ( Func< Task< T > > factory )

virtual

Creates or retrieves a new instance of the Model by invoking an action.

Parameters

factory Factory method to invoke

Definition at line 531 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ SaveAsync()

virtual async Task< T > Csla.Xaml.ViewModelBase< T >.SaveAsync ( )

virtual

Saves the Model, first committing changes if ManagedObjectLifetime is true.

Definition at line 551 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ UnhookChangedEvents()

void Csla.Xaml.ViewModelBase< T >.UnhookChangedEvents ( T model )

protected

Unhooks changed event handlers from the model.

Parameters

model

Definition at line 710 of file Csla.Xaml.Shared/ViewModelBase.cs.

Member Data Documentation

◆ ManageObjectLifetimeProperty

readonly DependencyProperty Csla.Xaml.ViewModelBase< T >.ManageObjectLifetimeProperty

static

Initial value:

=
        DependencyProperty.Register("ManageObjectLifetime", typeof(bool),
        typeof(ViewModelBase<T>), new PropertyMetadata(true))

Gets or sets a value indicating whether the ViewModel should automatically managed the lifetime of the Model.

Definition at line 92 of file Csla.Xaml.Shared/ViewModelBase.cs.

◆ ModelProperty

readonly DependencyProperty Csla.Xaml.ViewModelBase< T >.ModelProperty

static

Initial value:

=
        DependencyProperty.Register("Model", typeof(T), typeof(ViewModelBase<T>),
        new PropertyMetadata((o, e) =>
        {
          var viewmodel = (ViewModelBase<T>)o;
          viewmodel.OnModelChanged((T)e.OldValue, (T)e.NewValue);
        }))

Gets or sets the Model object.

Definition at line 66 of file Csla.Xaml.Shared/ViewModelBase.cs.