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com.sun.star.lib.uno.helper
Class PropertySetMixin

java.lang.Object
  com.sun.star.lib.uno.helper.PropertySetMixin

public final class PropertySetMixin
extends Object

A helper mixin to implement certain UNO interfaces related to property set handling on top of the attributes of a given UNO interface type.

A client will mix in this class by keeping a reference to an instance of this class, and forwarding all methods of (a subset of the interfaces) com.sun.star.beans.XPropertySet, com.sun.star.beans.XFastPropertySet, and com.sun.star.beans.XPropertyAccess to it.

Client code should not use the monitors associated with instances of this class, as they are used for internal purposes.

Since:

UDK 3.2

Nested Class Summary

static class

PropertySetMixin.BoundListeners A class used by clients of PropertySetMixin when implementing UNO interface type attribute setter functions.

Constructor Summary

PropertySetMixin(XComponentContext context, XInterface object, Type type, String[] absentOptional)
The constructor.

Method Summary

void	addPropertyChangeListener(String propertyName, XPropertyChangeListener listener) Implements com.sun.star.beans.XPropertySet.addPropertyChangeListener.
void	addVetoableChangeListener(String propertyName, XVetoableChangeListener listener) Implements com.sun.star.beans.XPropertySet.addVetoableChangeListener.
void	dispose() Marks this instance as being disposed.
Object	getFastPropertyValue(int handle) Implements com.sun.star.beans.XFastPropertySet.getFastPropertyValue.
XPropertySetInfo	getPropertySetInfo() Implements com.sun.star.beans.XPropertySet.getPropertySetInfo.
Object	getPropertyValue(String propertyName) Implements com.sun.star.beans.XPropertySet.getPropertyValue.
PropertyValue[]	getPropertyValues() Implements com.sun.star.beans.XPropertyAccess.getPropertyValues.
void	prepareSet(String propertyName, Object oldValue, Object newValue, PropertySetMixin.BoundListeners bound) A method used by clients when implementing UNO interface type attribute setter functions.
void	prepareSet(String propertyName, PropertySetMixin.BoundListeners bound) A simplified version of prepareSet(String, Object, Object, PropertySetMixin.BoundListeners).
void	removePropertyChangeListener(String propertyName, XPropertyChangeListener listener) Implements com.sun.star.beans.XPropertySet.removePropertyChangeListener.
void	removeVetoableChangeListener(String propertyName, XVetoableChangeListener listener) Implements com.sun.star.beans.XPropertySet.removeVetoableChangeListener.
void	setFastPropertyValue(int handle, Object value) Implements com.sun.star.beans.XFastPropertySet.setFastPropertyValue.
void	setPropertyValue(String propertyName, Object value) Implements com.sun.star.beans.XPropertySet.setPropertyValue.
void	setPropertyValues(PropertyValue[] props) Implements com.sun.star.beans.XPropertyAccess.setPropertyValues.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PropertySetMixin

public PropertySetMixin(XComponentContext context,
                        XInterface object,
                        Type type,
                        String[] absentOptional)

The constructor.

Parameters:

context - the component context used by this instance; must not be null, and must supply the service com.sun.star.reflection.CoreReflection and the singleton com.sun.star.reflection.theTypeDescriptionManager

object - the client UNO object into which this instance is mixed in; must not be null, and must support the given type

type - the UNO interface type whose attributes are mapped to properties; must not be null, and must represent a UNO interface type

absentOptional - a list of optional properties that are not present, and should thus not be visible via com.sun.star.beans.XPropertySet.getPropertySetInfo, com.sun.star.beans.XPropertySet.addPropertyChangeListener, com.sun.star.beans.XPropertySet.removePropertyChangeListener, com.sun.star.beans.XPropertySet.addVetoableChangeListener, and com.sun.star.beans.XPropertySet.removeVetoableChangeListener; null is treated the same as an empty list; if non-null, the given array must not be modified after it is passed to this constructor. For consistency reasons, the given absentOptional should only contain the names of attributes that represent optional properties that are not present (that is, the attribute getters and setters always throw a com.sun.star.beans.UnknownPropertyException), and should contain each such name only once. If an optional property is not present (that is, the corresponding attribute getter and setter always throw a com.sun.star.beans.UnknownPropertyException) but is not contained in the given absentOptional, then it will be visible via com.sun.star.beans.XPropertySet.getPropertySetInfo as a com.sun.star.beans.Property with a set com.sun.star.beans.PropertyAttribute.OPTIONAL. If the given object does not implement com.sun.star.beans.XPropertySet, then the given absentOptional is effectively ignored and can be null or empty.

Method Detail

prepareSet

public void prepareSet(String propertyName,
                       Object oldValue,
                       Object newValue,
                       PropertySetMixin.BoundListeners bound)
                throws PropertyVetoException

A method used by clients when implementing UNO interface type attribute setter functions.

First, this method checks whether this instance has already been disposed (see dispose()), and throws a com.sun.star.beans.DisposedException if applicable. For a constrained attribute (whose setter can explicitly raise com.sun.star.beans.PropertyVetoException), this method notifies any com.sun.star.beans.XVetoableChangeListeners. For a bound attribute, this method modifies the passed-in bound so that it can afterwards be used to notify any com.sun.star.beans.XPropertyChangeListeners. This method should be called before storing the new attribute value, and bound.notifyListeners() should be called exactly once after storing the new attribute value (in case the attribute is bound; otherwise, calling bound.notifyListeners() is ignored). Furthermore, bound.notifyListeners() and this method have to be called from the same thread.

Parameters:

propertyName - the name of the property (which is the same as the name of the attribute that is going to be set)

oldValue - the property value corresponding to the old attribute value. This is only used as com.sun.star.beans.PropertyChangeEvent.OldValue, which is rather useless, anyway (see “Using the Observer Pattern” in OpenOffice.org Coding Guidelines). If the attribute that is going to be set is neither bound nor constrained, or if com.sun.star.beans.PropertyChangeEvent.OldValue should not be set, Any.VOID can be used instead.

newValue - the property value corresponding to the new attribute value. This is only used as com.sun.star.beans.PropertyChangeEvent.NewValue, which is rather useless, anyway (see “Using the Observer Pattern&rdquo: in OpenOffice.org Coding Guidelines), unless the attribute that is going to be set is constrained. If the attribute that is going to be set is neither bound nor constrained, or if it is only bound but com.sun.star.beans.PropertyChangeEvent.NewValue should not be set, Any.VOID can be used instead.

bound - a reference to a fresh PropertySetMixin.BoundListeners instance (which has not been passed to this method before, and on which PropertySetMixin.BoundListeners.notifyListeners() has not yet been called); may only be null if the attribute that is going to be set is not bound

Throws:

PropertyVetoException

prepareSet

public void prepareSet(String propertyName,
                       PropertySetMixin.BoundListeners bound)

A simplified version of prepareSet(String, Object, Object, PropertySetMixin.BoundListeners).

This method is useful for attributes that are not constrained.

Parameters:

propertyName - the name of the property (which is the same as the name of the attribute that is going to be set)

bound - a reference to a fresh PropertySetMixin.BoundListeners instance (which has not been passed to this method before, and on which PropertySetMixin.BoundListeners.notifyListeners() has not yet been called); may only be null if the attribute that is going to be set is not bound

dispose

public void dispose()

Marks this instance as being disposed.

See com.sun.star.lang.XComponent for the general concept of disposing UNO objects. On the first call to this method, all registered listeners (com.sun.star.beans.XPropertyChangeListeners and com.sun.star.beans.XVetoableChangeListeners) are notified of the disposing source. Any subsequent calls to this method are ignored.

getPropertySetInfo

public XPropertySetInfo getPropertySetInfo()

Implements com.sun.star.beans.XPropertySet.getPropertySetInfo.

setPropertyValue

public void setPropertyValue(String propertyName,
                             Object value)
                      throws UnknownPropertyException,
                             PropertyVetoException,
                             IllegalArgumentException,
                             WrappedTargetException

Implements com.sun.star.beans.XPropertySet.setPropertyValue.

Throws:

UnknownPropertyException

PropertyVetoException

IllegalArgumentException

WrappedTargetException

getPropertyValue

public Object getPropertyValue(String propertyName)
                        throws UnknownPropertyException,
                               WrappedTargetException

Implements com.sun.star.beans.XPropertySet.getPropertyValue.

Throws:

UnknownPropertyException

WrappedTargetException

addPropertyChangeListener

public void addPropertyChangeListener(String propertyName,
                                      XPropertyChangeListener listener)
                               throws UnknownPropertyException,
                                      WrappedTargetException

Implements com.sun.star.beans.XPropertySet.addPropertyChangeListener.

If a listener is added more than once, it will receive all relevant notifications multiple times.

Throws:

UnknownPropertyException

WrappedTargetException

removePropertyChangeListener

public void removePropertyChangeListener(String propertyName,
                                         XPropertyChangeListener listener)
                                  throws UnknownPropertyException,
                                         WrappedTargetException

Implements com.sun.star.beans.XPropertySet.removePropertyChangeListener.

Throws:

UnknownPropertyException

WrappedTargetException

addVetoableChangeListener

public void addVetoableChangeListener(String propertyName,
                                      XVetoableChangeListener listener)
                               throws UnknownPropertyException,
                                      WrappedTargetException

Implements com.sun.star.beans.XPropertySet.addVetoableChangeListener.

If a listener is added more than once, it will receive all relevant notifications multiple times.

Throws:

UnknownPropertyException

WrappedTargetException

removeVetoableChangeListener

public void removeVetoableChangeListener(String propertyName,
                                         XVetoableChangeListener listener)
                                  throws UnknownPropertyException,
                                         WrappedTargetException

Implements com.sun.star.beans.XPropertySet.removeVetoableChangeListener.

Throws:

UnknownPropertyException

WrappedTargetException

setFastPropertyValue

public void setFastPropertyValue(int handle,
                                 Object value)
                          throws UnknownPropertyException,
                                 PropertyVetoException,
                                 IllegalArgumentException,
                                 WrappedTargetException

Implements com.sun.star.beans.XFastPropertySet.setFastPropertyValue.

Throws:

UnknownPropertyException

PropertyVetoException

IllegalArgumentException

WrappedTargetException

getFastPropertyValue

public Object getFastPropertyValue(int handle)
                            throws UnknownPropertyException,
                                   WrappedTargetException

Implements com.sun.star.beans.XFastPropertySet.getFastPropertyValue.

Throws:

UnknownPropertyException

WrappedTargetException

getPropertyValues

public PropertyValue[] getPropertyValues()

Implements com.sun.star.beans.XPropertyAccess.getPropertyValues.

setPropertyValues

public void setPropertyValues(PropertyValue[] props)
                       throws UnknownPropertyException,
                              PropertyVetoException,
                              IllegalArgumentException,
                              WrappedTargetException

Implements com.sun.star.beans.XPropertyAccess.setPropertyValues.

Throws:

UnknownPropertyException

PropertyVetoException

IllegalArgumentException

WrappedTargetException