summaryrefslogtreecommitdiff
path: root/javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java
diff options
context:
space:
mode:
authorJoachim Lingner <jl@openoffice.org>2002-04-25 10:36:26 +0000
committerJoachim Lingner <jl@openoffice.org>2002-04-25 10:36:26 +0000
commit94773767108b89fd9df40d331904416cff638709 (patch)
tree04ceb26e84e44192f6312994a32e642839007f78 /javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java
parent9863ef55aad307f0965d4cd6ab377fd604b49410 (diff)
#97746#
Diffstat (limited to 'javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java')
-rw-r--r--javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java1073
1 files changed, 1073 insertions, 0 deletions
diff --git a/javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java b/javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java
new file mode 100644
index 000000000000..e4c5dbc88b61
--- /dev/null
+++ b/javaunohelper/com/sun/star/lib/uno/helper/PropertySet.java
@@ -0,0 +1,1073 @@
+/*************************************************************************
+ *
+ * $RCSfile: PropertySet.java,v $
+ *
+ * $Revision: 1.1 $
+ *
+ * last change: $Author: jl $ $Date: 2002-04-25 11:31:36 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (the "License"); You may not use this file
+ * except in compliance with the License. You may obtain a copy of the
+ * License at http://www.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+package com.sun.star.lib.uno.helper;
+
+import com.sun.star.uno.Type;
+import com.sun.star.lang.EventObject;
+import com.sun.star.lang.WrappedTargetException;
+import com.sun.star.uno.TypeClass;
+import com.sun.star.uno.AnyConverter;
+import com.sun.star.uno.XInterface;
+import com.sun.star.uno.Any;
+import com.sun.star.uno.UnoRuntime;
+import com.sun.star.beans.XPropertyChangeListener;
+import com.sun.star.beans.XVetoableChangeListener;
+import com.sun.star.beans.PropertyChangeEvent;
+import com.sun.star.beans.XPropertySet;
+import com.sun.star.beans.Property;
+import com.sun.star.beans.PropertyAttribute;
+import com.sun.star.beans.UnknownPropertyException;
+import com.sun.star.beans.XPropertiesChangeListener;
+import com.sun.star.beans.XPropertySetInfo;
+import com.sun.star.beans.XFastPropertySet;
+import com.sun.star.beans.PropertyVetoException;
+import com.sun.star.beans.XMultiPropertySet;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Iterator;
+import java.util.Collection;
+import java.util.HashMap;
+import java.lang.reflect.Field;
+
+
+/** This class is an implementation of the interfaces com.sun.star.beans.XPropertySet,
+ * com.sun.star.beans.XFastPropertySet and com.sun.star.beans.XMultiPropertySet. This
+ * class has to be inherited to be used. The values of properties are stored in member
+ * variables of the inheriting class. By overriding the methods
+ * {@link #convertPropertyValue convertPropertyValue},
+ * {@link #setPropertyValueNoBroadcast setPropertyValueNoBroadcast} and
+ * {@link #getPropertyValue(Property)} one can determine how
+ * property values are stored.
+ * When using the supplied implementations of this class then the member variables which
+ * hold property values have to be declared in the class which inherits last in the inheriting
+ * chain and they have to be of public, protected or package access.<p>
+ * Properties have to be registered by one of the registerProperty methods. They take among other
+ * arguments an Object named <em>id</em> which has to be a String that represents the name of
+ * the member variable. The registering has to occur in the constructor of the inheriting class.
+ * It is no allowed to add or change properties later on.<p>
+ * Example:
+ * <pre>
+ * public class Foo extends PropertySet
+ * {
+ * protected int intProp;
+ *
+ * public Foo()
+ * {
+ * registerProperty("PropertyA", 0, new Type(int.class), (short)0, "intProp");
+ * }
+ * }
+ *
+ * </pre>
+ */
+public class PropertySet extends ComponentBase implements XPropertySet, XFastPropertySet,
+XMultiPropertySet
+{
+ private HashMap _nameToPropertyMap;
+ private HashMap _handleToPropertyMap;
+ private HashMap _propertyToIdMap;
+ private Property[] arProperties;
+
+ private int lastHandle= 1;
+
+ protected XPropertySetInfo propertySetInfo;
+ protected MultiTypeInterfaceContainer aBoundLC= new MultiTypeInterfaceContainer();
+ protected MultiTypeInterfaceContainer aVetoableLC= new MultiTypeInterfaceContainer();
+ public PropertySet()
+ {
+ super();
+ initMappings();
+ }
+
+ /** Registers a property with this helper class and associates the argument <em>id</em> with it.
+ * <em>id</em> is used to identify the storage of the property value. How property values are stored
+ * and retrieved is determined by the methods {@link #convertPropertyValue convertPropertyValue},
+ * {@link #setPropertyValueNoBroadcast setPropertyValueNoBroadcast} and {@link #getPropertyValue(Property) getPropertyValue}
+ * These methods expect <em>id</em> to be a java.lang.String which represents the name of a member variable
+ * which holds the property value.
+ * Only properties which are registered can be accessed. Registration has to occur during
+ * initialization of the inheriting class (i.e. within the contructor).
+ * @param prop The property to be registered.
+ * @param id Identifies the properties storage.
+ * @see #getPropertyId
+ */
+ protected void registerProperty(Property prop, Object id)
+ {
+ putProperty(prop);
+ assignPropertyId(prop, id);
+ }
+
+ /** Registers a property with this helper class and associates the argument id with it.
+ * It does the same as {@link #registerProperty(Property, Object)}. The first four
+ * arguments are used to construct a Property object.
+ * Registration has to occur during
+ * initialization of the inheriting class (i.e. within the contructor)
+ * @param name The property's name (Property.Name).
+ * @param handle The property's handle (Property.Handle).
+ * @param Type The property's type (Property.Type).
+ * @param attributes The property's attributes (Property.Attributes).
+ * @param id Identifies the property's storage.
+ */
+ protected void registerProperty(String name, int handle, Type type, short attributes, Object id)
+ {
+ Property p= new Property(name, handle, type, attributes);
+ registerProperty(p, id);
+ }
+
+ /** Registers a property with this helper class and associates the argument id with it.
+ * It does the same as {@link #registerProperty(Property, Object)}. The first three
+ * arguments are used to construct a Property object. The value for the Property.Handle
+ * is generated and does not have to be specified here. Use this method for registering
+ * a property if you do not care about the Property's handles.
+ * Registration has to occur during
+ * initialization of the inheriting class (i.e. within the contructor).
+ * @param name The property's name (Property.Name).
+ * @param handle The property's handle (Property.Handle).
+ * @param Type The property's type (Property.Type).
+ * @param attributes The property's attributes (Property.Attributes).
+ * @param id Identifies the property's storage.
+ */
+ protected void registerProperty(String name, Type type, short attributes, Object id)
+ {
+ Property p= new Property(name, lastHandle++, type, attributes);
+ registerProperty(p, id);
+ }
+
+ /** Returns the Property object for a given property name or null if that property does
+ * not exists (i.e. it has not been registered). Override this method
+ * if you want to implement your own mapping from property names to Property objects.
+ * Then you also have to override {@link #initMappings}, {@link #getProperties()} and
+ * {@link #putProperty(Property)}.
+ * @param propertyName The name of the property (Property.Name)
+ * @return The Property object with the name <em>propertyName</em>.
+ */
+ protected Property getProperty(String propertyName)
+ {
+ return (Property) _nameToPropertyMap.get(propertyName);
+ }
+
+ /** Returns the Property object with a handle (Property.Handle) as specified by the argument
+ * <em>nHandle</em>. The method returns null if there is no such property (i.e. it has not
+ * been registered). Override this method if you want to implement your own mapping from handles
+ * to Property objects. Then you also have to override {@link #initMappings}, {@link #putProperty(Property)}.
+ * @param nHandle The handle of the property (Property.Handle).
+ * @return The Property object with the handle <em>nHandle</em>
+ */
+ protected Property getPropertyByHandle(int nHandle)
+ {
+ return (Property) _handleToPropertyMap.get(new Integer(nHandle));
+ }
+
+ /** Returns an array of all Property objects or an array of length null if there
+ * are no properties. Override this method if you want to implement your own mapping from names
+ * to Property objects. Then you also have to override {@link #initMappings}, {@link #getProperty(String)} and
+ * {@link #putProperty}.
+ * @return Array of all Property objects.
+ */
+ protected Property[] getProperties()
+ {
+ if (arProperties == null)
+ {
+ Collection values= _nameToPropertyMap.values();
+ arProperties= (Property[]) values.toArray(new Property[_nameToPropertyMap.size()]);
+ }
+ return arProperties;
+ }
+
+ /** Stores a Property object so that it can be retrieved subsequently by
+ * {@link #getProperty(String)},{@link #getProperties()},{@link #getPropertyByHandle(int)}.
+ * Override this method if you want to implement your own mapping from handles
+ * to Property objects and names to Property objects. Then you also need to override {@link #initMappings},
+ * {@link #getProperty(String)},{@link #getProperties()},{@link #getPropertyByHandle(int)}.
+ * @param prop The Property object that is to be stored.
+ */
+ protected void putProperty(Property prop)
+ {
+ _nameToPropertyMap.put(prop.Name, prop);
+ if (prop.Handle != -1)
+ _handleToPropertyMap.put(new Integer(prop.Handle), prop);
+ }
+
+ /** Assigns an identifyer object to a Property object so that the identifyer
+ * can be obtained by {@link #getPropertyId getPropertyId} later on. The identifyer
+ * is used to specify a certain storage for the property's value. If you do not
+ * override {@link #setPropertyValueNoBroadcast() setPropertyValueNoBroadcast} or {@link #getPropertyValue(Property)}
+ * then the argument <em>id</em> has to be a java.lang.String that equals the name of
+ * the member variable that holds the Property's value.
+ * Override this method if you want to implement your own mapping from Property objects to ids or
+ * if you need ids of a type other then java.lang.String.
+ * Then you also need to override {@link #initMappings initMappings} and {@link #getPropertyId getPropertyId}.
+ * @param prop The Property object that is being assigned an id.
+ * @param id The object which identifies the storage used for the property's value.
+ * @see #registerProperty(Property, Object)
+ */
+ protected void assignPropertyId(Property prop, Object id)
+ {
+ if (id instanceof String && ((String) id).equals("") == false)
+ _propertyToIdMap.put(prop, id);
+ }
+
+ /** Returns the identifyer object for a certain Property. The object must have been
+ * previously assigned to the Property object by {@link #assignPropertyId assignPropertyId}.
+ * Override this method if you want to implement your own mapping from Property objects to ids.
+ * Then you also need to override {@link #initMappings initMappings} and {@link #assignPropertyId assignPropertyId}.
+ * @param prop The property for which the id is to be retrieved.
+ * @return The id object that identifies the storage used for the property's value.
+ * @see #registerProperty(Property, Object)
+ */
+ protected Object getPropertyId(Property prop)
+ {
+ return _propertyToIdMap.get(prop);
+ }
+
+ /** Initializes data structures used for mappings of property names to property object,
+ * property handles to property objects and property objects to id objects.
+ * Override this method if you want to implement your own mappings. Then you also need to
+ * override {@link #putProperty putProperty},{@link #getProperty getProperty}, {@link #getPropertyByHandle},
+ * {@link #assignPropertyId assignPropertyId} and {@link #getPropertyId getPropertyId}.
+ */
+ protected void initMappings()
+ {
+ _nameToPropertyMap= new HashMap();
+ _handleToPropertyMap= new HashMap();
+ _propertyToIdMap= new HashMap();
+ }
+
+ /** Makes sure that listeners which are kept in aBoundLC (XPropertyChangeListener) and aVetoableLC
+ * (XVetoableChangeListener) receive a disposing call. Also those listeners are relesased.
+ */
+ protected void postDisposing()
+ {
+ // Create an event with this as sender
+ EventObject aEvt= new EventObject(this);
+
+ // inform all listeners to reelease this object
+ aBoundLC.disposeAndClear(aEvt);
+ aVetoableLC.disposeAndClear(aEvt);
+ }
+
+ //XPropertySet ----------------------------------------------------
+ synchronized public void addPropertyChangeListener(String str, XPropertyChangeListener xPropertyChangeListener)
+ throws UnknownPropertyException, WrappedTargetException
+ {
+ // only add listeners if you are not disposed
+ if (! bInDispose && ! bDisposed)
+ {
+ if (str.length() > 0)
+ {
+ Property prop= getProperty(str);
+ if (prop == null)
+ throw new UnknownPropertyException();
+
+ // Add listener for a certain property
+ if ((prop.Attributes & PropertyAttribute.BOUND) > 0)
+ aBoundLC.addInterface(str, xPropertyChangeListener);
+ else
+ //ignore silently
+ return;
+ }
+ else
+ // Add listener for all properties
+ listenerContainer.addInterface(XPropertyChangeListener.class, xPropertyChangeListener);
+ }
+ }
+ //XPropertySet ----------------------------------------------------
+ synchronized public void addVetoableChangeListener(String str, com.sun.star.beans.XVetoableChangeListener xVetoableChangeListener) throws com.sun.star.beans.UnknownPropertyException, com.sun.star.lang.WrappedTargetException
+ {
+ // only add listeners if you are not disposed
+ if (! bInDispose && ! bDisposed)
+ {
+ if (str.length() > 0)
+ {
+ Property prop= getProperty(str);
+ if (prop == null)
+ throw new UnknownPropertyException();
+
+ // Add listener for a certain property
+ if ((prop.Attributes & PropertyAttribute.CONSTRAINED) > 0)
+ aVetoableLC.addInterface(str, xVetoableChangeListener);
+ else
+ //ignore silently
+ return;
+ }
+ else
+ // Add listener for all properties
+ listenerContainer.addInterface(XVetoableChangeListener.class, xVetoableChangeListener);
+ }
+ }
+ //XPropertySet ----------------------------------------------------
+ public com.sun.star.beans.XPropertySetInfo getPropertySetInfo()
+ {
+ if (propertySetInfo == null)
+ {
+ synchronized (this)
+ {
+ if (propertySetInfo == null)
+ propertySetInfo= new PropertySetInfo();
+ }
+ }
+ return propertySetInfo;
+ }
+ //XPropertySet ----------------------------------------------------
+ public Object getPropertyValue(String name) throws UnknownPropertyException, WrappedTargetException
+ {
+ Object ret= null;
+ if (bInDispose || bDisposed)
+ throw new com.sun.star.lang.DisposedException();
+
+ Property prop= getProperty(name);
+ if (prop == null)
+ throw new UnknownPropertyException();
+ if ((prop.Attributes & PropertyAttribute.READONLY) == PropertyAttribute.READONLY)
+ return null;
+
+ synchronized (this)
+ {
+ ret= getPropertyValue(prop);
+ }
+ return ret;
+ }
+
+ //XPropertySet ----------------------------------------------------
+ synchronized public void removePropertyChangeListener(String str, com.sun.star.beans.XPropertyChangeListener xPropertyChangeListener) throws com.sun.star.beans.UnknownPropertyException, com.sun.star.lang.WrappedTargetException
+ { // all listeners are automaticly released in a dispose call
+ if (!bInDispose && !bDisposed)
+ {
+ if (str.length() > 0)
+ {
+ Property prop = getProperty(str);
+ if (prop == null)
+ throw new UnknownPropertyException();
+ aBoundLC.removeInterface(str, xPropertyChangeListener);
+ }
+ else
+ listenerContainer.removeInterface(XPropertyChangeListener.class, xPropertyChangeListener);
+ }
+ }
+
+ //XPropertySet ----------------------------------------------------
+ synchronized public void removeVetoableChangeListener(String str, com.sun.star.beans.XVetoableChangeListener xVetoableChangeListener) throws com.sun.star.beans.UnknownPropertyException, com.sun.star.lang.WrappedTargetException
+ {// all listeners are automaticly released in a dispose call
+ if (!bInDispose && !bDisposed)
+ {
+ if (str.length() > 0)
+ {
+ Property prop = getProperty(str);
+ if (prop == null)
+ throw new UnknownPropertyException();
+ aVetoableLC.removeInterface(str, xVetoableChangeListener);
+ }
+ else
+ listenerContainer.removeInterface(XVetoableChangeListener.class, xVetoableChangeListener);
+ }
+ }
+
+ //XPropertySet ----------------------------------------------------
+ /** Sets the value of a property.
+ * The idl description for this interfaces, stipulates that the argument value is an Any. Since a java.lang.Object
+ * reference has the same meaning as an Any this function accepts
+ * java anys (com.sun.star.uno.Any) and all other appropriate objects as arguments. The value argument can be one
+ * of these:
+ * <ul>
+ * <li>java.lang.Boolean</li>
+ * <li>java.lang.Character</li>
+ * <li>java.lang.Byte</li>
+ * <li>java.lang.Short</li>
+ * <li>java.lang.Integer</li>
+ * <li>java.lang.Long</li>
+ * <li>java.lang.Float</li>
+ * <li>java.lang.Double</li>
+ * <li>java.lang.String</li>
+ * <li>com.sun.star.uno.Type</li>
+ * <li><em>objects which implement UNO interfaces</em></li>
+ * <li><em>arrays which contain elements of the types above</em></li>
+ * <li>com.sun.star.uno.Any containing an instance of one of the above types</li>
+ * </ul>
+ *
+ * Properties can have the attribute com.sun.star.beans.PropertyAttribute.MAYBEVOID, which means that the value
+ * (not the type) can be void. In order to assign a void value to a property one can either pass an Any which
+ * contains a null reference or pass null directly. In bothe cases the null reference is only accepted if
+ * the PropertyAttribute.MAYBEVOID attribute is set for the property.
+ *
+ * Properties which have the attribute MAYBEVOID set (Property.Attributes) can have a void value. The following
+ * considerations presume that the Property has that attribute set. Further, when mentioning an Any's value we
+ * actually refer to the object returned by Any.getObject.
+ * If the argument <em>value</em> is null, or it is an Any whose value is null (but with a valid Type)
+ * then the member variable used for storing the property's value is set to null.
+ * Therefore those properties can only be stored in objects
+ * and primitive types are not allowed (one can use the wrapper classes instead,e.g. java.lang.Byte) .
+ * If a property's value is kept in a member variable of type Any and that reference is still null
+ * then when setPropertyValue is called with
+ * <em>value</em> = null then the member variable is assigned an Any with type void and a null value.
+ * Or if the argument is an Any with a null value then it is assigned to the member variable.
+ * Further, if the variable already
+ * references an Any and setPropertyValue is called with <em>value</em> = null, then the variable is assigned
+ * a new Any with the same type as the previously referenced Any and with a null value.
+ * @param name The name of the property.
+ * @param value The new value of the property.
+ * * */
+ public void setPropertyValue(String name, Object value) throws com.sun.star.beans.UnknownPropertyException,
+ com.sun.star.beans.PropertyVetoException, com.sun.star.lang.IllegalArgumentException,
+ com.sun.star.lang.WrappedTargetException
+ {
+ Property prop= getProperty(name);
+ setPropertyValue(prop, value);
+ }
+
+ /** Sets the value of a property. It checks if the property's attributes (READONLY,MAYBEVOID), allow that the
+ * new value can be set. It also causes the notification of listeners.
+ * @param prop The property whose value is to be set.
+ * @param value The new value for the property.
+ */
+ protected void setPropertyValue(Property prop, Object value) throws com.sun.star.beans.UnknownPropertyException,
+ com.sun.star.beans.PropertyVetoException, com.sun.star.lang.IllegalArgumentException,
+ com.sun.star.lang.WrappedTargetException
+ {
+ if (prop == null)
+ throw new UnknownPropertyException();
+ if ((prop.Attributes & PropertyAttribute.READONLY) == PropertyAttribute.READONLY)
+ throw new com.sun.star.beans.PropertyVetoException();
+ // The value may be null only if MAYBEVOID attribute is set
+ boolean bVoidValue= false;
+ if (value instanceof Any)
+ bVoidValue= ((Any) value).getObject() == null;
+ else
+ bVoidValue= value == null;
+ if (bVoidValue && (prop.Attributes & PropertyAttribute.MAYBEVOID) == 0)
+ throw new com.sun.star.lang.IllegalArgumentException("The property must have a value; the MAYBEVOID attribute is not set!");
+ if (bInDispose || bDisposed)
+ throw new com.sun.star.lang.DisposedException();
+
+ //Check if the argument is allowed
+ boolean bValueOk= false;
+ if (value instanceof Any)
+ bValueOk= checkType(((Any) value).getObject());
+ else
+ bValueOk= checkType(value);
+ if (! bValueOk)
+ throw new com.sun.star.lang.IllegalArgumentException("No valid UNO type");
+
+
+ boolean bConversionOk= false;
+ Object[] outConvertedVal= new Object[1];
+ Object[] outOldValue= new Object[1];
+ synchronized (this)
+ {
+ bConversionOk= convertPropertyValue(prop, outConvertedVal, outOldValue, value);
+ }
+
+ //The next step following the conversion is to set the new value of the property. Prior to this
+ // the XVetoableChangeListener s have to be notified.
+ if (bConversionOk)
+ {
+ // If the property is CONSTRAINED, then we must notify XVetoableChangeListener. The listener can throw a com.sun.star.lang.beans.PropertyVetoException which
+ // will cause this method to return (the exception is not caught here).
+ fire( new Property[]{prop}, outConvertedVal, outOldValue, true);
+
+ synchronized (this)
+ {
+ setPropertyValueNoBroadcast(prop, outConvertedVal[0]);
+ }
+ // fire a change event (XPropertyChangeListener, PropertyAttribute.BOUND
+ fire( new Property[]{prop}, outConvertedVal, outOldValue, false);
+ }
+ }
+
+ /** Converts a value in a way so that its appropriate for storing as a property value, that is
+ * {@link #setPropertyValueNoBroadcast setPropertyValueNoBroadcast} can process the value without any further
+ * conversion. This implementation presumes that
+ * the values are stored in member variables of the furthest inheriting class. For example,
+ * class A inherits this class then members of class A
+ * can hold property values. If there is a class B which inherits A then only members of B can hold
+ * property values. The variables can have
+ * public, protected or package level access. A property must have been registered (e.g. by
+ * {@link #registerProperty(Property, Object)} in order for this method to work. The identifyer Object argument
+ * used in the registerProperty methods must
+ * be a java.lang.String that is the name of the member variable that holds the property value.
+ * If one opts to store values differently then one may override
+ * this method, as well as {@link #setPropertyValueNoBroadcast setPropertyValueNoBroadcast} and
+ * {@link #getPropertyValue(Property) getPropertyValue(Property)}.
+ * This method is always called as a result of a call to one of the setter methods, such as
+ * {@link #setPropertyValue(String,Object) XPropertySet.setPropertyValue},
+ * {@link #setFastPropertyValue XFastPropertySet.setFastPropertyValue}
+ * and {@link #setPropertyValues XMultiPropertySet.setPropertyValues}.
+ * If this method fails, that is, it returns false or throws an exception, then no listeners are notified and the
+ * property value, that was intended to be changed, remains untouched.<br /> This method does not have to deal with property attributes, such as
+ * PropertyAttribute.READONLY or PropertyAttribute.MAYBEVOID. The processing of these attributes occurs
+ * in the calling methods.<br />
+ * Only if this method returns successfully further processing, such
+ * as listener notification and finally the modifiction of the property's value, will occur.<br />
+ *
+ * The actual modification of a property's value is done by {@link #setPropertyValueNoBroadcast setPropertyValueNoBroadcast}
+ * which is called subsequent to convertPropertyValue.
+ *<p>
+ * This method converts values by help of the com.sun.star.uno.AnyConverter which only does a few widening
+ * conversions on integer types and floating point types. For example, there is the property PropA with a Type equivalent
+ * to int.class and the
+ * value of the property is to be stored in a member variable of type int with name intProp. Then setPropertyValue is
+ * called:
+ * <pre>
+ * set.setPropertyValue( "PropA", new Byte( (byte)111));
+ * </pre>
+ * At some point setPropertyValue will call convertPropertyValue and pass in the Byte object. Since we allow
+ * that Byte values can be used with the property and know that the value is to be stored in intProp (type int)
+ * we convert the Byte object into an Integer object which is then returned in the out-parameter <em>newVal</em>. This
+ * conversion is actually performed by the AnyConverter. Later
+ * the setPropertyValueNoBroadcast is called with that Integer object and the int value can be easily extracted
+ * from the object and be assigned to the member intProp.
+ * <p>
+ * The method handles Any arguments the same as Object arguments. That is, the <em>setVal</em> argument can
+ * be a java.lang.Boolean or a com.sun.star.uno.Any containing a java.lang.Boolean. Likewise, a member
+ * containing a property value can be a com.sun.star.uno.Any or an java.lang.Object.
+ * Then, no conversion is necessary, since they can hold all possible values. However, if
+ * the member is an Object and <em>setVal</em> is an Any then the object contained in the any is assigned to
+ * the member. The extra type information which exists as Type object in the Any will get lost. If this is not
+ * intended then use an Any variable rather then an Object.<br />
+ * If a member is an Object or Any and the argument <em>setVal</em> is an Object, other than String or array,
+ * then it is presumed to be an UNO object and queried for XInterface. If successful, the out-param <em>newVal</em>
+ * returns the XInterface.<br />
+ * If a member is an UNO interface, then <em>setVal</em> is queried for this interface and the result is returned.
+ * If <em>setVal</em> is null then <em>newVal</em> will be null too after return.
+ * <p>
+ * If a property value is stored using a primitive type the the out-parameters
+ * <em>curVal</em> and <em>newVal</em> contain the respective wrapper class (e.g.java.lang.Byte, etc.).
+ * curVal is used in calls to the XVetoableChangeListener and XPropertyChangeListener.
+ *
+ * @param property - in-param property for which the data is to be converted.
+ * @param newVal - out-param which contains the converted value on return.
+ * @param curVal - out-param the current value of the property. It is used in calls to the
+ * XVetoableChangeListener and XPropertyChangeListener.
+ * @param setVal - in-param. The value that is to be converted so that it matches Property and the internally used
+ * dataformat for that property.
+ * @return true - Conversion was successful. <em>newVal</em> contains a valid value for the property. false -
+ * conversion failed for some reason.
+ * @throws com.sun.star.lang.IllegalArgumentException The value provided is unfit for the property.
+ * @throws com.sun.star.lang.WrappedTargetException - An exception occured during the conversion, that is to be made known
+ * to the caller.
+ */
+ protected boolean convertPropertyValue(Property property, Object[] newVal, Object[]curVal, Object setVal)
+ throws com.sun.star.lang.IllegalArgumentException, WrappedTargetException
+ {
+ boolean ret= true;
+ try
+ {
+ // get the member name
+ String sMember= (String) getPropertyId(property);
+ if (sMember != null)
+ {
+ // use reflection to obtain the field that holds the property value
+ // Class.getDeclaredFields does not return inherited fields. One could use Class.getFields to
+ // also get inherited fields, but only those which are public.
+ Field propField= getClass().getDeclaredField(sMember);
+ if (propField != null)
+ {
+ curVal[0]= propField.get(this);
+ Class memberClass= propField.getType();
+
+ // MAYBEVOID: if setVal == null or it is an Any and getObject returns null, then a void value is to be set
+ // This works only if there are no primitive types. For those we use the respective wrapper classes.
+ // In this implementation, a null reference means void value.
+ boolean bVoidValue= false;
+ boolean bAnyVal= setVal instanceof Any;
+ if (bAnyVal)
+ bVoidValue= ((Any) setVal).getObject() == null;
+ else
+ bVoidValue= setVal == null;
+ if (bVoidValue && memberClass.isPrimitive())
+ throw new com.sun.star.lang.IllegalArgumentException("The implementation does not support the MAYBEVOID attribute for this property");
+
+ Object convObj= null;
+ //The member that keeps the value of the Property is an Any. It can contain all possible
+ //types, therefore a conversion is not necessary.
+ if (memberClass.equals(Any.class))
+ {
+ if (bAnyVal)
+ //parameter setVal is also an Any and can be used without further processing
+ convObj= setVal;
+ else
+ {
+ // Parameter setVal is not an Any. We need to construct an Any that contains
+ // the argument setVal.
+ // If setVal is an interface implementation then, we cannot constuct the
+ // Any with setVal.getClass(), because the Any.Type._typeClass would be TypeClass.UNKNOWN.
+ // We try to get an XInterface of setVal and set an XInterface type.
+ if (setVal instanceof XInterface)
+ {
+ XInterface xint= (XInterface) UnoRuntime.queryInterface(XInterface.class, setVal);
+ if (xint != null)
+ convObj= new Any(new Type(XInterface.class), xint);
+ }
+ // The member is an any, and the past in argument was null reference (MAYBEVOID is set)
+ else if (setVal == null)
+ {
+ // if the any member is still null we create a void any
+ if (curVal[0] == null)
+ convObj= new Any(new Type(), null);
+ else
+ {
+ //otherwise we create an Any with the same type as a value of null;
+ convObj= new Any( ((Any)curVal[0]).getType(), null);
+ }
+ }
+ else
+ convObj= new Any(new Type(setVal.getClass()), setVal);
+ }
+ }
+ else
+ convObj= convert(memberClass, setVal);
+ newVal[0]= convObj;
+ }
+ }
+ }
+ catch (java.lang.NoSuchFieldException e)
+ {
+ throw new com.sun.star.lang.WrappedTargetException("Field does not exist", this, e);
+ }
+ catch (java.lang.IllegalAccessException e)
+ {
+ throw new com.sun.star.lang.WrappedTargetException("", this ,e);
+ }
+ return ret;
+ }
+
+ private boolean checkType(Object obj)
+ {
+ if (obj == null
+ || obj instanceof Boolean
+ || obj instanceof Character
+ || obj instanceof Number
+ || obj instanceof String
+ || obj instanceof XInterface
+ || obj instanceof Type
+ || obj.getClass().isArray())
+ return true;
+ return false;
+ }
+
+ // Param object can be an Any or other object. If obj is null then the return value is null
+ private Object convert( Class cl, Object obj) throws com.sun.star.lang.IllegalArgumentException
+ {
+ Object retVal= null;
+ //The member that keeps the value of the Property is an Object.Objects are similar to Anys in that they can
+ // hold all types.
+ if (obj == null || (obj instanceof Any && ((Any) obj).getObject() == null))
+ retVal= null;
+ else if(cl.equals(Object.class))
+ {
+ if (obj instanceof Any)
+ obj= ((Any) obj).getObject();
+ retVal= obj;
+ }
+ else if(cl.equals(boolean.class))
+ retVal= new Boolean(AnyConverter.toBoolean(obj));
+ else if (cl.equals(char.class))
+ retVal= new Character(AnyConverter.toChar(obj));
+ else if (cl.equals(byte.class))
+ retVal= new Byte(AnyConverter.toByte(obj));
+ else if (cl.equals(short.class))
+ retVal= new Short(AnyConverter.toShort(obj));
+ else if (cl.equals(int.class))
+ retVal= new Integer(AnyConverter.toInt(obj));
+ else if (cl.equals(long.class))
+ retVal= new Long(AnyConverter.toLong(obj));
+ else if (cl.equals(float.class))
+ retVal= new Float(AnyConverter.toFloat(obj));
+ else if (cl.equals(double.class))
+ retVal= new Double(AnyConverter.toDouble(obj));
+ else if (cl.equals(String.class))
+ retVal= AnyConverter.toString(obj);
+ else if (cl.isArray())
+ retVal= AnyConverter.toArray(obj);
+ else if (cl.equals(Type.class))
+ retVal= AnyConverter.toType(obj);
+ else if (cl.equals(Boolean.class))
+ retVal= new Boolean(AnyConverter.toBoolean(obj));
+ else if (cl.equals(Character.class))
+ retVal= new Character(AnyConverter.toChar(obj));
+ else if (cl.equals(Byte.class))
+ retVal= new Byte(AnyConverter.toByte(obj));
+ else if (cl.equals(Short.class))
+ retVal= new Short(AnyConverter.toShort(obj));
+ else if (cl.equals(Integer.class))
+ retVal= new Integer(AnyConverter.toInt(obj));
+ else if (cl.equals(Long.class))
+ retVal= new Long(AnyConverter.toLong(obj));
+ else if (cl.equals(Float.class))
+ retVal= new Float(AnyConverter.toFloat(obj));
+ else if (cl.equals(Double.class))
+ retVal= new Double(AnyConverter.toDouble(obj));
+ else if (XInterface.class.isAssignableFrom(cl))
+ retVal= AnyConverter.toObject(new Type(cl), obj);
+ else
+ throw new com.sun.star.lang.IllegalArgumentException();
+ return retVal;
+ }
+
+ /** Sets the value of a property. In this implementation property values are stored in member variables
+ * (see {@link #convertPropertyValue convertPropertyValue} Notification of property listeners
+ * does not occur in this method. By overriding this method one can take full control about how property values
+ * are stored. But then, the {@link #convertPropertyValue convertPropertyValue} and
+ * {@link getPropertyValue(Property)} must be overridden too.
+ *
+ * A Property with the MAYBEVOID attribute set, is stored as null value. Therefore the member variable must be
+ * an Object in order to make use of the property attribute. An exception is Any. The Any variable can be initially null, but
+ * once it is set the reference will not become null again. If the value is to be set to
+ * void then a new Any will be stored
+ * with a valid type but without a value (i.e. Any.getObject returns null).
+ * If a property has the READONLY attribute set, and one of the setter methods, such as setPropertyValue, has been
+ * called, then this method is not going to be called.
+ * @param property the property for which the new value is set
+ * @param value the new value for the property.
+ * @throws com.sun.star.lang.WrappedTargetException An exception, which has to be made known to the caller,
+ * occured during the setting of the value.
+ */
+ protected void setPropertyValueNoBroadcast(Property property, Object newVal)
+ throws com.sun.star.lang.WrappedTargetException
+ {
+ try
+ {
+ // get the member name
+ String sMember= (String) getPropertyId(property);
+ if (sMember != null)
+ {
+ // use reflection to obtain the field that holds the property value
+ // Class.getDeclaredFields does not return inherited fields. One could use Class.getFields to
+ // also get inherited fields, but only those which are public.
+ Field propField= getClass().getDeclaredField(sMember);
+ if (propField != null)
+ propField.set(this, newVal);
+ }
+ }
+ catch(java.lang.Exception e)
+ {
+ throw new com.sun.star.lang.WrappedTargetException("PropertySet.setPropertyValue_NoBroadcast", this, e);
+ }
+ }
+ /** Retrieves the value of a property. This implementation presumes that the values are stored in member variables
+ * of the furthest inheriting class (see {@link #convertPropertyValue convertPropertyValue}) and that the
+ * variables have public, protected or package level access. The property must have
+ * been registered, for example by {@link #registerProperty(Property, Object)}. The identifyer Object argument
+ * must have been a java.lang.String which was the name of the member variable holding the property value.
+ * When properties are to be stored differently one has to override this method as well as
+ * {@link #convertPropertyValue} and {@link #setPropertyValueNoBroadcast}. <br>
+ * If a value is stored in a variable of a primitive type then this method returns an instance of the respective
+ * wrapper class (e.g. java.lang.Boolean).
+ * @param property The property for which the value is to be retrieved.
+ * @return The value of the property.
+ */
+ protected Object getPropertyValue(Property property)
+ throws com.sun.star.lang.WrappedTargetException
+ {
+ Object ret= null;
+ try
+ {
+ // get the member name
+ String sMember= (String) getPropertyId(property);
+ if (sMember != null)
+ {
+ // use reflection to obtain the field that holds the property value
+ // Class.getDeclaredFields does not return inherited fields. One could use Class.getFields to
+ // also get inherited fields, but only those which are public.
+ Field propField= getClass().getDeclaredField(sMember);
+ if (propField != null)
+ ret= propField.get(this);
+ }
+ }
+ catch(java.lang.Exception e)
+ {
+ throw new WrappedTargetException("PropertySet.setPropertyValue_NoBroadcast", this, e);
+ }
+ return ret;
+ }
+
+ /**
+ * This method fires events to XPropertyChangeListener,XVetoableChangeListener and
+ * XPropertiesChangeListener event sinks.
+ * To distinguish what listeners are to be called the argument <em>bVetoable</em> is to be set to true if
+ * a XVetoableChangeListener is meant. For XPropertyChangeListener and XPropertiesChangeListener
+ * it is to be set to false.
+ *
+ * @param properties Properties wich will be or have been affected.
+ * @param newValues the new values of the properties.
+ * @param oldValues the old values of the properties.
+ * @param bVetoable true means fire to VetoableChangeListener, false means fire to
+ * XPropertyChangedListener and XMultiPropertyChangedListener.
+ */
+ protected void fire(
+ Property[] properties,
+ Object[] newValues,
+ Object[] oldValues,
+ boolean bVetoable ) throws PropertyVetoException
+ {
+ // Only fire, if one or more properties changed
+ int nNumProps= properties.length;
+ if (nNumProps > 0)
+ {
+ PropertyChangeEvent[] arEvts= new PropertyChangeEvent[nNumProps];
+ int nAffectedProps= 0;
+ // Loop over all changed properties to fill the event struct
+ for (int i= 0; i < nNumProps; i++)
+ {
+ if ((bVetoable && (properties[i].Attributes & PropertyAttribute.CONSTRAINED) > 0)
+ || (!bVetoable && (properties[i].Attributes & PropertyAttribute.BOUND) > 0))
+ {
+ arEvts[i]= new PropertyChangeEvent(this, properties[i].Name, false,
+ properties[i].Handle, oldValues[i], newValues[i]);
+ nAffectedProps++;
+ }
+ }
+ // fire the events for all changed properties
+ for (int i= 0; i < nAffectedProps; i++)
+ {
+ // get the listener container for the property name
+ InterfaceContainer lc= null;
+ if (bVetoable)
+ lc= aVetoableLC.getContainer(arEvts[i].PropertyName);
+ else
+ lc= aBoundLC.getContainer(arEvts[i].PropertyName);
+ if (lc != null)
+ {
+ Iterator it= lc.iterator();
+ while( it.hasNext())
+ {
+ Object listener= it.next();
+ if (bVetoable)
+ ((XVetoableChangeListener) listener).vetoableChange(arEvts[i]);
+ else
+ ((XPropertyChangeListener) listener).propertyChange(arEvts[i]);
+ }
+ }
+ // broadcast to all listeners with "" property name
+ if(bVetoable)
+ lc= listenerContainer.getContainer(XVetoableChangeListener.class);
+ else
+ lc= listenerContainer.getContainer(XPropertyChangeListener.class);
+ if(lc != null)
+ {
+ Iterator it= lc.iterator();
+ while(it.hasNext() )
+ {
+ Object listener= it.next();
+ if( bVetoable ) // fire change Events?
+ ((XVetoableChangeListener) listener).vetoableChange(arEvts[i]);
+ else
+ ((XPropertyChangeListener) listener).propertyChange(arEvts[i]);
+ }
+ }
+ }
+ // fire at XPropertiesChangeListeners
+ // if nAffectedProps == 0 then there are no BOUND properties
+ if (!bVetoable && nAffectedProps > 0)
+ {
+
+ PropertyChangeEvent[] arReduced= new PropertyChangeEvent[nAffectedProps];
+ System.arraycopy(arEvts, 0, arReduced, 0, nAffectedProps);
+ InterfaceContainer lc= listenerContainer.getContainer(XPropertiesChangeListener.class);
+ if (lc != null)
+ {
+ // !!! Here is a Bug, unbound properties are also fired
+ Iterator it= lc.iterator();
+ while (it.hasNext())
+ {
+ XPropertiesChangeListener listener = (XPropertiesChangeListener) it.next();
+ // fire the hole event sequence to the XPropertiesChangeListener's
+ listener.propertiesChange( arEvts );
+ }
+ }
+ }
+ }
+ }
+ // XFastPropertySet--------------------------------------------------------------------------------
+ public void setFastPropertyValue(int nHandle, Object aValue ) throws UnknownPropertyException,
+ PropertyVetoException, com.sun.star.lang.IllegalArgumentException, WrappedTargetException
+ {
+ Property prop= getPropertyByHandle(nHandle);
+ setPropertyValue(prop, aValue);
+ }
+
+ // XFastPropertySet --------------------------------------------------------------------------------
+ public Object getFastPropertyValue(int nHandle ) throws UnknownPropertyException,
+ WrappedTargetException
+ {
+ Property prop= getPropertyByHandle(nHandle);
+ return getPropertyValue(prop);
+ }
+
+ // XMultiPropertySet -----------------------------------------------------------------------------------
+ public void addPropertiesChangeListener(String[] propNames, XPropertiesChangeListener xPropertiesChangeListener)
+ {
+ listenerContainer.addInterface(XPropertiesChangeListener.class, xPropertiesChangeListener);
+ }
+
+ // XMultiPropertySet -----------------------------------------------------------------------------------
+ public void firePropertiesChangeEvent(String[] propNames, XPropertiesChangeListener listener)
+ {
+ // Build the events.
+ PropertyChangeEvent[] arEvents= new PropertyChangeEvent[propNames.length];
+ int eventCount= 0;
+ // get a snapshot of the current property values
+ synchronized (this)
+ {
+ for (int i= 0; i < propNames.length; i++)
+ {
+ Property prop= getProperty(propNames[i]);
+ if (prop != null)
+ {
+ Object value= null;
+ try
+ {
+ value= getPropertyValue(prop);
+ }
+ catch(WrappedTargetException e)
+ {
+ continue;
+ }
+ arEvents[eventCount]= new PropertyChangeEvent(this, prop.Name,
+ false, prop.Handle, value, value);
+ eventCount++;
+ }
+ }
+ }
+
+ // fire events from unsynchronized section so as to prevent deadlocks
+ if (eventCount > 0)
+ {
+ // Reallocate the array of the events if necessary
+ if (arEvents.length != eventCount)
+ {
+ PropertyChangeEvent[] arPropsTmp= new PropertyChangeEvent[eventCount];
+ System.arraycopy(arEvents, 0, arPropsTmp, 0, eventCount);
+ arEvents= arPropsTmp;
+ }
+ listener.propertiesChange(arEvents);
+ }
+ }
+ // XMultiPropertySet -----------------------------------------------------------------------------------
+ /** If a value for a property could not be retrieved then the respective element in the returned
+ * array has the value null.
+ */
+ public Object[] getPropertyValues(String[] propNames)
+ {
+ Object[] arValues= new Object[propNames.length];
+ synchronized (this)
+ {
+ for (int i= 0; i < propNames.length; i++)
+ {
+ Object value= null;
+ try
+ {
+ value= getPropertyValue(propNames[i]);
+ }
+ catch (Exception e)
+ {
+ }
+ arValues[i]= value;
+ }
+ }
+ return arValues;
+ }
+ // XMultiPropertySet -----------------------------------------------------------------------------------
+ public void removePropertiesChangeListener(XPropertiesChangeListener xPropertiesChangeListener)
+ {
+ listenerContainer.removeInterface(XPropertiesChangeListener.class, xPropertiesChangeListener);
+ }
+ // XMultiPropertySet -----------------------------------------------------------------------------------
+ /** If the array of property names containes an unknown property then it will be ignored.
+ */
+ public void setPropertyValues(String[] propNames, Object[] values) throws PropertyVetoException, com.sun.star.lang.IllegalArgumentException, com.sun.star.lang.WrappedTargetException
+ {
+ for (int i= 0; i < propNames.length; i++)
+ {
+ try
+ {
+ setPropertyValue(propNames[i], values[i]);
+ }
+ catch (UnknownPropertyException e)
+ {
+ continue;
+ }
+
+ }
+ }
+
+ private class PropertySetInfo implements XPropertySetInfo
+ {
+ public com.sun.star.beans.Property[] getProperties()
+ {
+ return PropertySet.this.getProperties();
+ }
+
+ public com.sun.star.beans.Property getPropertyByName(String name) throws UnknownPropertyException
+ {
+ return getProperty(name);
+ }
+
+ public boolean hasPropertyByName(String name)
+ {
+ return getProperty(name) != null;
+ }
+
+ }
+}
+
+
+
+
+