84 lines
3.4 KiB
Java
84 lines
3.4 KiB
Java
/*
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* Copyright (c) 2003,2007 Declarative Engineering LLC.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Declarative Engineering LLC
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* verson 1 which accompanies this distribution, and is available at
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* http://declarativeengineering.com/legal/DE_Developer_License_v1.txt
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*/
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package com.foundation.view;
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import com.common.debug.*;
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public class MethodAssociation extends ValueHolderAssociation implements IMethodAssociation {
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private int associationNumber = 0;
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private IAssociationHandler handler = null;
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/** The listener for held value changed notifications. */
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private IMethodAssociationChangeListener listener = null;
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/**
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* MethodAssociation constructor.
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* @param handler The object that handles the method invocations.
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* @param associationNumber The association number which will be passed to the handler when the assocation is invoked. This number allows fast indexing of the methods that the handler handles.
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* @param component The component the association is connected to.
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* @param valueHolderName The optional name of the value holder for the association.
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* @param heldType The optional class which is a subclass of the value holder's held type and defines the association.
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* @param rowType The optional class which defines the association if a held type or value holder is not provided, and it determines whether this association is used based on whether it matches the control's row type.
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*/
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public MethodAssociation(IAssociationHandler handler, int associationNumber, IAbstractComponent component, String valueHolderName, Class heldType, Class rowType) {
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super(component, valueHolderName, heldType, rowType);
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this.handler = handler;
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this.associationNumber = associationNumber;
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}//MethodAssociation()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.IMethodAssociation#invoke(java.lang.Object[], boolean)
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*/
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public Object invoke(Object[] parameters, boolean synchronous) {
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return invoke(null, parameters, synchronous);
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}//invoke()//
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/* (non-Javadoc)
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* @see com.foundation.tcv.swt.server.IMethodAssociation#invoke(java.lang.Object, java.lang.Object[], boolean)
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*/
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public Object invoke(final Object value, final Object[] parameters, boolean synchronous) {
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Object result = null;
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Object object = value != null ? value : getValueHolder().getValue();
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try {
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if(object != null) {
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result = handler.invokeMethod(associationNumber, object, parameters);
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}//if//
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}//try//
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catch(Throwable e) {
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Debug.log(e);
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}//catch//
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return result;
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}//invoke()//
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/* (non-Javadoc)
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* @see com.foundation.view.IMethodAssociation#heldValueChanged()
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*/
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public void heldValueChanged() {
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listener.onEventFired(this);
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}//heldValueChanged()//
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/* (non-Javadoc)
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* @see com.foundation.view.IMethodAssociation#register()
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*/
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public void register() {
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if(getIsValueHolderAssociated()) {
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getValueHolder().registerListener(this);
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}//if//
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}//register()//
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/* (non-Javadoc)
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* @see com.foundation.view.IMethodAssociation#unregister()
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*/
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public void unregister() {
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if(getIsValueHolderAssociated()) {
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getValueHolder().unregisterListener(this);
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}//if//
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}//unregister()//
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/* (non-Javadoc)
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* @see com.foundation.view.IMethodAssociation#setChangeListener(com.foundation.view.IMethodAssociationChangeListener)
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*/
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public void setChangeListener(IMethodAssociationChangeListener listener) {
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this.listener = listener;
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}//setChangeListener()//
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}//MethodAssociation// |