private static void ItemsSourceChanged(BindableObject bindable, IEnumerable oldValue, IEnumerable newValue) {
var picker = (Picker)bindable;
if (picker == null)
throw new Exception("only support Picker");
var selected = picker.SelectedIndex;
var type = newValue.GetType().GenericTypeArguments[0].GetTypeInfo();
var dp = (string)bindable.GetValue(DisplayPathProperty);
PropertyInfo p = null;
if (!string.IsNullOrWhiteSpace(dp)) {
p = type.GetDeclaredProperty(dp);
}
foreach (var o in newValue) {
object value = null;
if (p != null)
value = p.GetValue(o);
else
value = o;
if (value != null)
picker.Items.Add(value.ToString());
}
picker.SelectedIndex = selected;
}
internal override void SetUp(BindableObject bindable)
{
object newvalue = bindable.GetValue(Property);
bool newState = (newvalue == Value) || (newvalue != null && newvalue.Equals(Value));
bindable.SetValue(_stateProperty, newState);
bindable.PropertyChanged += OnAttachedObjectPropertyChanged;
}
// I need handle it here too 'cause when I use the child `Ghost` property coming from XAML binding, it didn't hit the `set` method
public T GetValue <T>(BindableProperty property)
{
var value = propagationRootObject?.GetValue(property);
if (value != null)
{
INotifyPropertyChanged bindableSubObject = (value as INotifyPropertyChanged);
if (bindableSubObject != null)
{
bindableSubObject.PropertyChanged -= PropagatorListener;
bindableSubObject.PropertyChanged += PropagatorListener;
if (!propagationProperties.Any(a => a.Key == property.PropertyName))
{
propagationProperties.Add(new KeyValuePair <string, object>(property.PropertyName, value));
}
}
}
return((T)value);
}
private static void DataContextChanged(object obj, EventArgs args)
{
BindableObject d = obj as BindableObject;
IList <IMvxUpdateableBinding> bindings = d?.GetValue(BindingsListProperty) as IList <IMvxUpdateableBinding>;
if (bindings != null)
{
foreach (var binding in bindings)
{
binding.DataContext = d.BindingContext;
}
}
}
void OnConditionChanged(BindableObject bindable, bool oldValue, bool newValue)
{
var oldState = (bool)bindable.GetValue(_aggregatedStateProperty);
var newState = true;
foreach (Condition condition in Conditions)
{
if (!condition.GetState(bindable))
{
newState = false;
break;
}
}
if (newState != oldState)
bindable.SetValue(_aggregatedStateProperty, newState);
}
/// <summary>
/// Gets the list of pinned elements for the bindable object.
/// </summary>
/// <param name="bindableObject">The bindable object to get the list of pinned elements.</param>
/// <returns>The list of pinned elements of the bindable object.</returns>
internal static List<VisualElement> GetPinned(BindableObject bindableObject)
{
if (bindableObject == null)
{
throw new ArgumentNullException(nameof(bindableObject));
}
var value = bindableObject.GetValue(PinnedPropertyKey.BindableProperty) as List<VisualElement>;
if (value == null)
{
value = new List<VisualElement>();
bindableObject.SetValue(PinnedPropertyKey, value);
}
return value;
}
internal static CellRenderer GetRenderer(BindableObject cell)
{
return((CellRenderer)cell.GetValue(RendererProperty));
}
public static string GetAwesomeEntryType(BindableObject bindable)
{
return((string)bindable.GetValue(AwesomeEntryTypeProperty));
}
public static Command GetItemTapped(BindableObject bo)
{
return (Command)bo.GetValue(ItemTappedProperty);
}
public static INotifyCollectionChanged GetVMsProperty(BindableObject obj) {
if (null == (TabbedPage)obj)
throw new Exception("TabbedPageVMLocatorBinder only used for TabbedPage");
return (INotifyCollectionChanged)obj.GetValue(VMsProperty);
}
public static bool GetApplyStyleImmediately(BindableObject obj)
{
return((bool)obj?.GetValue(ApplyStyleImmediatelyProperty));
}
public static INameScope GetNameScope(BindableObject bindable)
{
return((INameScope)bindable?.GetValue(NameScopeProperty));
}
public static BaseAnimation GetAnimation(BindableObject b) => (BaseAnimation)b.GetValue(AnimationProperty);
public static Color GetBackgroundColor(BindableObject b) => (Color)b.GetValue(BackgroundColorProperty);
public static bool GetHide(BindableObject b) => (bool)b.GetValue(HideProperty);
public static bool GetIsBusy(BindableObject b) => (bool)b.GetValue(IsBusyProperty);
public static bool GetIsParent(BindableObject b) => (bool)b.GetValue(IsParentProperty);
public static RefreshPullDirection GetRefreshPullDirection(BindableObject element)
{
return((RefreshPullDirection)element.GetValue(RefreshPullDirectionProperty));
}
public static Qux GetQux(BindableObject bindable)
{
return((Qux)bindable.GetValue(QuxProperty));
}
public static string GetCachedSource(BindableObject bo)
{
return (string)bo.GetValue(ImageFactory.CachedSourceProperty);
}
internal static UITableViewCell GetRealCell(BindableObject cell)
{
return (UITableViewCell)cell.GetValue(RealCellProperty);
}
internal static bool GetAnimating(BindableObject b) => (bool)b.GetValue(AnimatingProperty);
public static BehaviorCollection GetBehaviors(BindableObject target)
{
return (BehaviorCollection)target.GetValue(BehaviorsProperty);
}
internal static bool GetCancelAnimation(BindableObject b) => (bool)b.GetValue(CancelAnimationProperty);
/// <summary>
/// Gets the value of padding.
/// </summary>
/// <param name="bindable">The layout</param>
/// <returns>Returns the padding.</returns>
public static Thickness GetPadding(BindableObject bindable)
{
return((Thickness)bindable?.GetValue(PaddingProperty));
}
internal static Color GetOriginalBackgroundColor(BindableObject b) => (Color)b.GetValue(OriginalBackgroundColorProperty);
public static void SetRenderer(BindableObject bindableObject, IVisualElementRenderer renderer)
{
var value = bindableObject.GetValue (RendererProperty);
bindableObject.SetValue (RendererProperty, renderer);
}
public static TabPosition GetTabPosition(BindableObject element)
{
return((TabPosition)element.GetValue(TabPositionProperty));
}
public static bool GetAttachBehavior(BindableObject view)
{
return (bool)view.GetValue(AttachBehaviorProperty);
}
public static bool GetIsSelectable(BindableObject bindableObject) =>
(bool)bindableObject.GetValue(IsSelectableProperty);
public static IList <BindableObject> GetAdditionalChildren(BindableObject obj)
{
var value = obj?.GetValue(AdditionalChildrenProperty) as IList <BindableObject>;
return(value);
}
public static Color GetColor(BindableObject bindable) {
var color = (Color)bindable.GetValue(ColorProperty);
return color;
}
public static ICommand GetItemTapped(BindableObject bindable)
{
return (ICommand)bindable.GetValue (CommandProperty);
}
public static double GetFontSize(BindableObject bindable) {
return (double)bindable.GetValue(FontSizeProperty);
}
/// <summary>
/// Gets the <see cref="T:Xamarin.Forms.Color"/> thumb tint color value for the Switch control's "off" position
/// that is currently assigned to the passed <see cref="T:Xamarin.Forms.BindableObject"/>.
/// </summary>
/// <returns>The currently assigned tint color or Color.Default if nothing is assigned.</returns>
/// <param name="bindable">The <see cref="T:Xamarin.Forms.BindableObject"/> that the ThumbTintColor attached
/// property value should be retrieved from.</param>
public static Color GetThumbTintColor(BindableObject bindable)
{
return((Color)(bindable?.GetValue(ThumbTintColorProperty) ??
ThumbTintColorProperty.DefaultValue));
}
public static string GetFontFamily(BindableObject obj) {
return obj.GetValue(FontFamilyProperty) as string;
}
public static ImagesCache GetSharedFactory(BindableObject bo)
{
return (ImagesCache)bo.GetValue(ImageFactory.SharedFactoryProperty);
}
/// <summary>
/// Gets the <see cref="T:XFGloss.CellGlossAccessoryType"/> value that is currently assigned to the passed
/// <see cref="T:Xamarin.Forms.BindableObject"/>.
/// </summary>
/// <returns>The assigned <see cref="T:XFGloss.CellGlossAccessoryType"/>.</returns>
/// <param name="bindable">The <see cref="T:Xamarin.Forms.BindableObject"/> that the AccessoryType attached
/// property value should be retrieved from.</param>
public static CellGlossAccessoryType GetAccessoryType(BindableObject bindable)
{
return((CellGlossAccessoryType)(bindable?.GetValue(AccessoryTypeProperty) ??
AccessoryTypeProperty.DefaultValue));
}
internal override bool GetState(BindableObject bindable)
{
return (bool)bindable.GetValue(_aggregatedStateProperty);
}
/// <summary>
/// Gets the <see cref="T:Xamarin.Forms.Color"/> value that is currently assigned to the passed
/// <see cref="T:Xamarin.Forms.BindableObject"/>.
/// </summary>
/// <returns>The currently assigned background color or Color.Default if nothing is assigned.</returns>
/// <param name="bindable">The <see cref="T:Xamarin.Forms.BindableObject"/> that the BackgroundColor attached
/// property value should be retrieved from.</param>
public static Color GetBackgroundColor(BindableObject bindable)
{
return((Color)(bindable?.GetValue(BackgroundColorProperty) ??
BackgroundColorProperty.DefaultValue));
}
/// <summary>
/// Gets the AutowireViewModel property value.
/// </summary>
/// <param name="bindable"></param>
/// <returns></returns>
public static bool? GetAutowireViewModel(BindableObject bindable)
{
return (bool?)bindable.GetValue(ViewModelLocator.AutowireViewModelProperty);
}
public static string GetAccessibilityLabel(BindableObject view)
{
return (string)view.GetValue (AccessibilityLabelProperty);
}
internal override bool GetState(BindableObject bindable)
{
object newValue = bindable.GetValue(_boundProperty);
return EqualsToValue(newValue);
}
public static AccessibilityTrait GetAccessibilityTraits(BindableObject view)
{
return (AccessibilityTrait)view.GetValue(AccessibilityTraitsProperty);
}
/// <summary>
/// Gets the value of margin.
/// </summary>
/// <param name="bindable">The view</param>
/// <returns>Returns the margin</returns>
public static Thickness GetMargin(BindableObject bindable)
{
return((Thickness)bindable?.GetValue(MarginProperty));
}
public static bool GetInAccessibleTree(BindableObject view)
{
return (bool)view.GetValue(InAccessibleTreeProperty);
}
/// <summary>
/// Gets the value of corner radius.
/// </summary>
/// <param name="bindable">The view</param>
/// <returns>Returns the corner radius.</returns>
public static Thickness GetCornerRadius(BindableObject bindable)
{
return((Thickness)bindable?.GetValue(CornerRadiusProperty));
}
/// <summary>
/// Gets the element that the instance is pinned to.
/// </summary>
/// <param name="bindableObject">The bindable object to get the pin target for.</param>
/// <returns>The element that the instance is pinned to.</returns>
public static VisualElement GetPinTo(BindableObject bindableObject)
{
if (bindableObject == null)
{
throw new ArgumentNullException(nameof(bindableObject));
}
return (VisualElement) bindableObject.GetValue(PinToProperty);
}
public static IVisualElementRenderer GetRenderer(BindableObject bindableObject)
{
var value = bindableObject.GetValue (RendererProperty);
return (IVisualElementRenderer)bindableObject.GetValue (RendererProperty);
}
/// <summary>
/// Gets the position for the object.
/// </summary>
/// <param name="bindableObject">The bindable object to get the position for.</param>
/// <returns>The position that has been assigned to the given object.</returns>
public static FlyoutPosition GetPosition(BindableObject bindableObject)
{
if (bindableObject == null)
{
throw new ArgumentNullException(nameof(bindableObject));
}
return (FlyoutPosition) bindableObject.GetValue(PositionProperty);
}
internal static CellRenderer GetRenderer(BindableObject cell)
{
return (CellRenderer)cell.GetValue(RendererProperty);
}
public static UITableViewCell GetMyRealCell(BindableObject child)
{
return (UITableViewCell)child.GetValue(MyRealCellProperty);
}
public static IEnumerable<string> GetItems(BindableObject bo)
{
return (IEnumerable<string>)bo.GetValue(PickerCollection.ItemsProperty);
}
/// <include file="../../../../docs/Microsoft.Maui.Controls.PlatformConfiguration.WindowsSpecific/WebView.xml" path="//Member[@MemberName='GetExecutionMode']/Docs" />
public static WebViewExecutionMode GetExecutionMode(BindableObject element)
{
return((WebViewExecutionMode)element.GetValue(ExecutionModeProperty));
}
/// <summary>
/// Gets the <see cref="T:XFGloss.Gradient"/> instance that is currently assigned to the passed
/// <see cref="T:Xamarin.Forms.BindableObject"/>.
/// </summary>
/// <returns>The currently assigned background gradient or null if nothing is assigned.</returns>
/// <param name="bindable">The <see cref="T:Xamarin.Forms.BindableObject"/> that the BackgroundGradient attached
/// property value should be retrieved from.</param>
public static Gradient GetBackgroundGradient(BindableObject bindable)
{
return((Gradient)(bindable?.GetValue(BackgroundGradientProperty) ??
BackgroundGradientProperty.DefaultValue));
}
private static int GetPadding(BindableObject bo) {
return (int)bo.GetValue(UniPadding.PaddingProperty);
}
public static IDomElement <BindableObject, BindableProperty> GetDomElement(BindableObject obj)
{
return(obj?.GetValue(DomElementProperty) as IDomElement <BindableObject, BindableProperty>);
}
/// <summary>
/// Get ItemHeader for bindable object
/// </summary>
/// <param name="bindable"></param>
/// <returns></returns>
private static HeaderedItem GetItemModel(BindableObject bindable)
{
return(bindable?.GetValue(ItemModelProperty) as HeaderedItem);
}
/// <summary>
/// Gets the <see cref="T:Xamarin.Forms.Color"/> minimum track tint color value that is currently assigned to
/// the passed <see cref="T:Xamarin.Forms.BindableObject"/>.
/// </summary>
/// <returns>The currently assigned tint color or Color.Default if nothing is assigned.</returns>
/// <param name="bindable">The <see cref="T:Xamarin.Forms.BindableObject"/> that the MinTrackTintColor attached
/// property value should be retrieved from.</param>
public static Color GetMinTrackTintColor(BindableObject bindable)
{
return((Color)(bindable?.GetValue(MinTrackTintColorProperty) ??
MinTrackTintColorProperty.DefaultValue));
}
public static ICommand GetItemTappedCommand(BindableObject bindableObject)
{
return((ICommand)bindableObject.GetValue(ItemTappedCommandProperty));
}