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Diffstat (limited to 'ridljar/com/sun/star/lib/uno/helper/PropertySet.java')
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diff --git a/ridljar/com/sun/star/lib/uno/helper/PropertySet.java b/ridljar/com/sun/star/lib/uno/helper/PropertySet.java new file mode 100644 index 000000000..67a4f0c98 --- /dev/null +++ b/ridljar/com/sun/star/lib/uno/helper/PropertySet.java @@ -0,0 +1,1103 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ +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.Iterator; +import java.util.Collection; +import java.util.HashMap; +import java.lang.reflect.Field; +import com.sun.star.lang.DisposedException; + + +/** 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 public<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<String,Property> _nameToPropertyMap; + private HashMap<Integer,Property> _handleToPropertyMap; + private HashMap<Property,Object> _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 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 constructor). + * @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 constructor) + * @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 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 constructor). + * @param name The property's name (Property.Name). + * @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); + } + + /** Registers a property with this class. This method expects that property values + * are stored in member variables as is the case if the methods convertPropertyValue, + * setPropertyValueNoBroadcast and getPropertyValue(Property) are not overridden. + * It is presumed that the type of the member variable + * corresponds Property.Type. For example, if the TypeClass of Property.Type is to be + * a TypeClass.SHORT then the member must be a short or java.lang.Short. + * The handle for the property is generated.<br> + * If there is no member with the specified name or if the member has an incompatible type + * then a com.sun.star.uno.RuntimeException is thrown. + * @param propertyName The name of the property. + * @param memberName The name of the member variable that holds the value of the property. + * @param attributes The property attributes. + */ + protected void registerProperty(String propertyName, String memberName, short attributes) + { + Field propField= null; + try + { + propField= getClass().getDeclaredField(memberName); + } + catch (NoSuchFieldException e) + { + throw new com.sun.star.uno.RuntimeException(e, "there is no member variable: " + memberName); + } + Class cl= propField.getType(); + Type t= new Type(cl); + if (t.getTypeClass() != TypeClass.UNKNOWN) + { + Property p= new Property(propertyName, lastHandle++, t, attributes); + registerProperty(p,memberName); + } + else + throw new com.sun.star.uno.RuntimeException("the member has an unknown type: " + memberName); + } + + /** Registers a property with this class. + * It is presumed that the name of property is equal to the name of the member variable + * that holds the property value. + * @param propertyName The name of the property and the member variable that holds the property's value. + * @param attributes The property attributes. + * @see #registerProperty(String, String, short) + */ + protected void registerProperty(String propertyName, short attributes) + { + registerProperty(propertyName, propertyName, attributes); + } + + + + /** 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 _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 _handleToPropertyMap.get(Integer.valueOf(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<Property> values= _nameToPropertyMap.values(); + arProperties= 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(Integer.valueOf(prop.Handle), prop); + } + + /** Assigns an identifier object to a Property object so that the identifier + * can be obtained by {@link #getPropertyId getPropertyId} later on. The identifier + * 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 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 than 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).length() != 0) + _propertyToIdMap.put(prop, id); + } + + /** Returns the identifier 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<String,Property>(); + _handleToPropertyMap= new HashMap<Integer,Property>(); + _propertyToIdMap= new HashMap<Property,Object>(); + } + + /** Makes sure that listeners which are kept in aBoundLC (XPropertyChangeListener) and aVetoableLC + * (XVetoableChangeListener) receive a disposing call. Also those listeners are released. + */ + @Override + protected void postDisposing() + { + // Create an event with this as sender + EventObject aEvt= new EventObject(this); + + // inform all listeners to release 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("Property " + str + " is unknown"); + + // 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("Property " + str + " is unknown"); + + // 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 synchronized com.sun.star.beans.XPropertySetInfo getPropertySetInfo() + { + 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("The component has been disposed already"); + + Property prop= getProperty(name); + if (prop == null) + throw new UnknownPropertyException("The property " + name + " is unknown"); + + synchronized (this) + { + ret= getPropertyValue(prop); + } + // null must not be returned. Either a void any is returned or an any containing + // an interface type and a null reference. + if (ret == null) + { + if (prop.Type.getTypeClass() == TypeClass.INTERFACE) + ret= new Any(prop.Type, null); + else + ret= new Any(new Type(void.class), null); + } + return ret; + } + + //XPropertySet ---------------------------------------------------- + synchronized public void removePropertyChangeListener(String propName, XPropertyChangeListener listener) throws UnknownPropertyException, WrappedTargetException + { // all listeners are automatically released in a dispose call + if (!bInDispose && !bDisposed) + { + if (propName.length() > 0) + { + Property prop = getProperty(propName); + if (prop == null) + throw new UnknownPropertyException("Property " + propName + " is unknown"); + aBoundLC.removeInterface(propName, listener); + } + else + listenerContainer.removeInterface(XPropertyChangeListener.class, listener); + } + } + + //XPropertySet ---------------------------------------------------- + synchronized public void removeVetoableChangeListener(String propName, XVetoableChangeListener listener) throws UnknownPropertyException, WrappedTargetException + {// all listeners are automatically released in a dispose call + if (!bInDispose && !bDisposed) + { + if (propName.length() > 0) + { + Property prop = getProperty(propName); + if (prop == null) + throw new UnknownPropertyException("Property " + propName + " is unknown"); + aVetoableLC.removeInterface(propName, listener); + } + else + listenerContainer.removeInterface(XVetoableChangeListener.class, listener); + } + } + + //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>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 both 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 UnknownPropertyException, + PropertyVetoException, com.sun.star.lang.IllegalArgumentException, WrappedTargetException + { + Property prop= getProperty(name); + if (prop == null) + throw new UnknownPropertyException("Property " + name + " is unknown"); + 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. + * + * @throws UnknownPropertyException + * See com.sun.star.beans.XPropertySet + * @throws PropertyVetoException + * See com.sun.star.beans.XPropertySet + * @throws WrappedTargetException + * See com.sun.star.beans.XPropertySet + */ + protected void setPropertyValue(Property prop, Object value) throws UnknownPropertyException, + PropertyVetoException, com.sun.star.lang.IllegalArgumentException, WrappedTargetException + { + 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; + 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 DisposedException("Component is already disposed"); + + //Check if the argument is allowed + boolean bValueOk; + 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 it is 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 must be public. A property must have been registered (e.g. by + * {@link #registerProperty(Property, Object)} in order for this method to work. The identifier argument (type Object) + * used in the registerProperty methods must + * be a String, which 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. + * + * 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. + * + * Only if this method returns successfully further processing, such + * as listener notification and finally the modification of the property's value, will occur. + * + * 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", Byte.valueOf( (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 a 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 than an Object. + * + * 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 a UNO object and queried for XInterface. If successful, the out-param <em>newVal</em> + * returns the XInterface. + * + * If a member is a 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 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 UnknownPropertyException + * See com.sun.star.beans.XPropertySet + * @throws com.sun.star.lang.IllegalArgumentException The value provided is unfit for the property. + * @throws com.sun.star.lang.WrappedTargetException - An exception occurred 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, UnknownPropertyException + { + 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 construct 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= 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; + } + } + else + throw new UnknownPropertyException("Property " + property.Name + " is unknown"); + } + catch (java.lang.NoSuchFieldException e) + { + throw new WrappedTargetException(e, "Field does not exist", this, e); + } + catch (java.lang.IllegalAccessException e) + { + throw new WrappedTargetException(e, "", this ,e); + } + return ret; + } + + private boolean checkType(Object obj) + { + return obj == null + || obj instanceof Boolean + || obj instanceof Character + || obj instanceof Number + || obj instanceof String + || obj instanceof XInterface + || obj instanceof Type + || obj instanceof com.sun.star.uno.Enum + || obj.getClass().isArray(); + } + + // 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)) + {} + else if(cl.equals(Object.class)) + { + if (obj instanceof Any) + obj= ((Any) obj).getObject(); + retVal= obj; + } + else if(cl.equals(boolean.class)) + retVal= Boolean.valueOf(AnyConverter.toBoolean(obj)); + else if (cl.equals(char.class)) + retVal= new Character(AnyConverter.toChar(obj)); + else if (cl.equals(byte.class)) + retVal= Byte.valueOf(AnyConverter.toByte(obj)); + else if (cl.equals(short.class)) + retVal= Short.valueOf(AnyConverter.toShort(obj)); + else if (cl.equals(int.class)) + retVal= Integer.valueOf(AnyConverter.toInt(obj)); + else if (cl.equals(long.class)) + retVal= Long.valueOf(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= Boolean.valueOf(AnyConverter.toBoolean(obj)); + else if (cl.equals(Character.class)) + retVal= new Character(AnyConverter.toChar(obj)); + else if (cl.equals(Byte.class)) + retVal= Byte.valueOf(AnyConverter.toByte(obj)); + else if (cl.equals(Short.class)) + retVal= Short.valueOf(AnyConverter.toShort(obj)); + else if (cl.equals(Integer.class)) + retVal= Integer.valueOf(AnyConverter.toInt(obj)); + else if (cl.equals(Long.class)) + retVal= Long.valueOf(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 if (com.sun.star.uno.Enum.class.isAssignableFrom(cl)) + retVal= AnyConverter.toObject(new Type(cl), obj); + else + throw new com.sun.star.lang.IllegalArgumentException("Could not convert the argument"); + 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 newVal the new value for the property. + * @throws com.sun.star.lang.WrappedTargetException An exception, which has to be made known to the caller, + * occurred during the setting of the value. + */ + protected void setPropertyValueNoBroadcast(Property property, Object newVal) + throws 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 WrappedTargetException(e, "PropertySet.setPropertyValueNoBroadcast", 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 are public. The property must have + * been registered, for example by {@link #registerProperty(Property, Object)}. The identifier Object argument + * must have been a 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) + { + 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.NoSuchFieldException e) + { + throw new java.lang.RuntimeException(e); + } + catch(java.lang.IllegalAccessException e) + { + throw new java.lang.RuntimeException(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 which 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. + * + * @throws PropertyVetoException + * if a vetoable listener throws it. + */ + 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; + if (bVetoable) + lc= aVetoableLC.getContainer(arEvts[i].PropertyName); + else + lc= aBoundLC.getContainer(arEvts[i].PropertyName); + Iterator it = lc != null ? lc.iterator() : null; + if (it != null) + { + 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); + it = lc != null ? lc.iterator() : null; + if (it != null) + { + 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); + Iterator it = lc != null ? lc.iterator() : null; + if (it != null) + { + while (it.hasNext()) + { + XPropertiesChangeListener listener = (XPropertiesChangeListener) it.next(); + // fire the whole 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); + if (prop == null) + throw new UnknownPropertyException(" The property with handle : " + nHandle +" is unknown"); + setPropertyValue(prop, aValue); + } + + // XFastPropertySet -------------------------------------------------------------------------------- + public Object getFastPropertyValue(int nHandle ) throws UnknownPropertyException, + WrappedTargetException + { + Property prop= getPropertyByHandle(nHandle); + if (prop == null) + throw new UnknownPropertyException("The property with handle : " + nHandle + " is unknown"); + return getPropertyValue(prop); + } + + // XMultiPropertySet ----------------------------------------------------------------------------------- + public void addPropertiesChangeListener(String[] propNames, XPropertiesChangeListener listener) + { + listenerContainer.addInterface(XPropertiesChangeListener.class, listener); + } + + // 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(Exception 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 contains 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; + } + + } +} + + + + + |