- All Implemented Interfaces:
QtObjectInterface
- Enclosing class:
- QObject
public class QObject.QShortProperty extends QShortPropertyData
- See Also:
QObject.QProperty
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Nested Class Summary
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Constructor Summary
Constructors Constructor Description QShortProperty()
Constructs ashort
-typed property.QShortProperty(short initialValue)
Constructs ashort
-typed property with the provided initialValue.QShortProperty(QPropertyBinding<@QtPrimitiveType Short> binding)
Constructs ashort
-typed property with the provided binding.QShortProperty(QShortPropertyBinding binding)
Constructs ashort
-typed property with the provided binding.QShortProperty(QtUtilities.ShortSupplier functor)
Constructs ashort
-typed property bound to the providedfunctor
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Method Summary
Modifier and Type Method Description QShortPropertyBinding
binding()
Returns the binding expression that is associated with this property.boolean
hasBinding()
Checks if the property has a binding.QPropertyChangeHandler
onValueChanged(Runnable f)
Registers the given functor f as a callback that shall be called whenever the value of the property changes.QShortPropertyBinding
setBinding(QPropertyBinding<@QtPrimitiveType Short> newBinding)
Associates the value of this property with the providednewBinding
expression and returns the previously associated binding.QShortPropertyBinding
setBinding(QShortPropertyBinding newBinding)
Associates the value of this property with the providednewBinding
expression and returns the previously associated binding.boolean
setBinding(QUntypedPropertyBinding newBinding)
Associates the value of this property with the providednewBinding
expression.QShortPropertyBinding
setBinding(QtUtilities.ShortSupplier functor)
Associates the value of this property with the providednewBinding
expression and returns the previously associated binding.void
setValue(short newValue)
Assigns newValue to this property and removes the property's associated binding, if present.QPropertyChangeHandler
subscribe(Runnable f)
Subscribes the given functor f as a callback that is called immediately and whenever the value of the property changes in the future.QShortPropertyBinding
takeBinding()
Disassociates the binding expression from this property and returns it.short
value()
Returns the value of the property.Methods inherited from class io.qt.core.QShortPropertyData
getValueBypassingBindings, setValueBypassingBindings
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Constructor Details
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QShortProperty
public QShortProperty()Constructs ashort
-typed property. -
QShortProperty
public QShortProperty(short initialValue)Constructs ashort
-typed property with the provided initialValue.- Parameters:
initialValue
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QShortProperty
Constructs ashort
-typed property with the provided binding.- Parameters:
binding
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QShortProperty
Constructs ashort
-typed property with the provided binding.- Parameters:
binding
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QShortProperty
Constructs a
short
-typed property bound to the providedfunctor
.- Parameters:
functor
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Method Details
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value
Returns the value of the property. This may evaluate a binding expression that is tied to this property, before returning the value.- Returns:
- value
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setValue
Assigns newValue to this property and removes the property's associated binding, if present.
- Parameters:
newValue
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setBinding
Associates the value of this property with the provided
newBinding
expression and returns the previously associated binding.The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.
- Parameters:
newBinding
-- Returns:
- oldBinding
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setBinding
Associates the value of this property with the provided
newBinding
expression and returns the previously associated binding.The binding's value type (
QUntypedPropertyBinding.valueMetaType()
) has to beshort
, otherwise the property remains unchanged.The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.
- Parameters:
newBinding
-- Returns:
- oldBinding
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setBinding
@QtUninvokable public QShortPropertyBinding setBinding(QPropertyBinding<@QtPrimitiveType Short> newBinding)Associates the value of this property with the provided
newBinding
expression and returns the previously associated binding.The binding's value type (
QUntypedPropertyBinding.valueMetaType()
) has to beshort
, otherwise the property remains unchanged.The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.
- Parameters:
newBinding
-- Returns:
- oldBinding
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setBinding
Associates the value of this property with the provided
newBinding
expression.The binding's value type (
QUntypedPropertyBinding.valueMetaType()
) has to beshort
, otherwise the property remains unchanged and the method returnsfalse
.The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.
Returns true if the type of this property is the same as the type the binding function returns; false otherwise.
- Parameters:
newBinding
-- Returns:
- true if types match, false otherwise.
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hasBinding
Checks if the property has a binding.- Returns:
- true if the property has a binding, false otherwise.
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binding
Returns the binding expression that is associated with this property. A default constructedQShortPropertyBinding
will be returned if no such association exists.- Returns:
- binding
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takeBinding
Disassociates the binding expression from this property and returns it.
After calling this function, the value of the property will only change if you assign a new value to it, or when a new binding is set.
- Returns:
- the removed binding
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onValueChanged
Registers the given functor f as a callback that shall be called whenever the value of the property changes.
The returned property change handler object keeps track of the registration. As long as the change handler is alive i.e. as long as a reference to the
QPropertyChangeHandler
instance exists, the callback remains installed. When the garbage collection deletes the instance, the callback is de-registered.- Parameters:
f
-- Returns:
- property change handler
- See Also:
QPropertyChangeHandler
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subscribe
Subscribes the given functor f as a callback that is called immediately and whenever the value of the property changes in the future.- Parameters:
f
-- Returns:
- property change handler
- See Also:
QPropertyChangeHandler
,onValueChanged(Runnable)
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