Package org.eclipse.core.databinding.property.value

Class DelegatingValueProperty<S,​T>

  • Type Parameters:
    S - type of the source object
    T - type of the value of the property
    All Implemented Interfaces:
    IProperty, IValueProperty<S,​T>
    public abstract class DelegatingValueProperty<S,​T>
extends ValueProperty<S,​T>
    Since:
    1.2

    • Constructor Detail

      • DelegatingValueProperty

        protected DelegatingValueProperty()

      • DelegatingValueProperty

        protected DelegatingValueProperty​(Object valueType)

    • Method Detail

      • getDelegate

        public final IValueProperty<S,​T> getDelegate​(S source)
        Returns the property to delegate to for the specified source object. Repeated calls to this method with the same source object returns the same delegate instance.
        Parameters:
        source - the property source (may be null)
        Returns:
        the property to delegate to for the specified source object.

      • doGetDelegate

        protected abstract IValueProperty<S,​T> doGetDelegate​(S source)
        Returns the property to delegate to for the specified source object. Implementers must ensure that repeated calls to this method with the same source object returns the same delegate instance.
        Parameters:
        source - the property source
        Returns:
        the property to delegate to for the specified source object.

      • doGetValue

        protected T doGetValue​(S source)
        Description copied from class: ValueProperty
        Returns the value of the property on the specified source object
        Overrides:
        doGetValue in class ValueProperty<S,​T>
        Parameters:
        source - the property source
        Returns:
        the current value of the source's value property

      • doSetValue

        protected void doSetValue​(S source,
                          T value)
        Description copied from class: ValueProperty
        Sets the source's value property to the specified vlaue
        Overrides:
        doSetValue in class ValueProperty<S,​T>
        Parameters:
        source - the property source
        value - the new value

      • getValueType

        public Object getValueType()
        Description copied from interface: IValueProperty
        Returns the value type of the property, or null if untyped.
        Returns:
        the value type of the property, or null if untyped.

      • observe

        public IObservableValue<T> observe​(S source)
        Description copied from interface: IValueProperty
        Returns an observable value observing this value property on the given property source.
        Specified by:
        observe in interface IValueProperty<S,​T>
        Overrides:
        observe in class ValueProperty<S,​T>
        Parameters:
        source - the property source
        Returns:
        an observable value observing this value property on the given property source

      • observe

        public IObservableValue<T> observe​(Realm realm,
                                   S source)
        Description copied from interface: IValueProperty
        Returns an observable value observing this value property on the given property source
        Parameters:
        realm - the observable's realm
        source - the property source
        Returns:
        an observable value observing this value property on the given property source

      • observeDetail

        public <U extends S> IObservableList<T> observeDetail​(IObservableList<U> master)
        Description copied from interface: IValueProperty
        Returns an observable list on the master observable's realm which tracks this property on each element of master.
        Specified by:
        observeDetail in interface IValueProperty<S,​T>
        Overrides:
        observeDetail in class ValueProperty<S,​T>
        Parameters:
        master - the master observable
        Returns:
        an observable list which tracks this property on each element of the master observable.

      • observeDetail

        public <U extends S> IObservableMap<U,​T> observeDetail​(IObservableSet<U> master)
        Description copied from interface: IValueProperty
        Returns an observable map on the master observable's realm where the map's key set is the specified master set, and where each key maps to the current property value for each element.
        Specified by:
        observeDetail in interface IValueProperty<S,​T>
        Overrides:
        observeDetail in class ValueProperty<S,​T>
        Parameters:
        master - the master observable
        Returns:
        an observable map that tracks the current value of this property for the elements in the given set.

      • observeDetail

        public <K,​V extends S> IObservableMap<K,​T> observeDetail​(IObservableMap<K,​V> master)
        Description copied from interface: IValueProperty
        Returns an observable map on the master observable's realm where the map's key set is the same as the master observable map, and where each value is the property value of the corresponding value in the master observable map.
        Specified by:
        observeDetail in interface IValueProperty<S,​T>
        Overrides:
        observeDetail in class ValueProperty<S,​T>
        Parameters:
        master - the master observable
        Returns:
        an observable map on the master observable's realm which tracks the current value of this property for the elements in the given map's values collection