| /******************************************************************************* |
| * Copyright (c) 2001, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jem.internal.proxy.ide; |
| /* |
| |
| |
| */ |
| |
| import java.io.*; |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jem.internal.proxy.core.*; |
| import org.eclipse.jem.internal.proxy.core.ExpressionProxy.ProxyEvent; |
| |
| public class IDECallbackRegistry implements ICallbackRegistry { |
| |
| IDEVMServer fVMServer; |
| int fNextCallbackID; |
| IDEProxyFactoryRegistry fProxyFactoryRegistry; |
| Map fCallbackIDToCallback = new HashMap(25); |
| Map fBeanProxyToCallbackID = new HashMap(25); |
| Map fCallbackIDToStream = new HashMap(25); |
| private IProxyMethod initializeCallbackMethodProxy; |
| private IBeanProxy vmServerProxy; |
| |
| IDECallbackRegistry(IDEProxyFactoryRegistry aRegistry){ |
| fProxyFactoryRegistry = aRegistry; |
| fVMServer = new IDEVMServer(this); |
| |
| vmServerProxy = aRegistry.getBeanProxy(fVMServer.getClass(), fVMServer); |
| |
| try { |
| Method initializeCallbackMethod = org.eclipse.jem.internal.proxy.common.ICallback.class.getMethod("initializeCallback", new Class[] {org.eclipse.jem.internal.proxy.common.IVMCallbackServer.class, Integer.TYPE}); //$NON-NLS-1$ |
| initializeCallbackMethodProxy = (IProxyMethod) aRegistry.getBeanProxy(Method.class, initializeCallbackMethod); |
| } catch (SecurityException e) { |
| e.printStackTrace(); |
| } catch (NoSuchMethodException e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| |
| /** |
| * Add a callback. aBeanProxy is running on the target VM and ICallback runs on our VM |
| * aBeanProxy will implement ICallback on the target side |
| */ |
| public void registerCallback(IBeanProxy aBeanProxy, ICallback aCallback){ |
| |
| // Get a handle to the remote VM callback |
| org.eclipse.jem.internal.proxy.common.ICallback vmCallback = (org.eclipse.jem.internal.proxy.common.ICallback) ((IIDEBeanProxy)aBeanProxy).getBean(); |
| fNextCallbackID = fNextCallbackID + 1; |
| int callbackID = fNextCallbackID; |
| vmCallback.initializeCallback( |
| fVMServer, |
| callbackID); |
| Integer callbackIntegerID = new Integer(callbackID); |
| fCallbackIDToCallback.put(callbackIntegerID,aCallback); |
| fBeanProxyToCallbackID.put(aBeanProxy,callbackIntegerID); |
| |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jem.internal.proxy.core.ICallbackRegistry#registerCallback(org.eclipse.jem.internal.proxy.core.IProxy, org.eclipse.jem.internal.proxy.core.ICallback, org.eclipse.jem.internal.proxy.core.IExpression) |
| */ |
| public void registerCallback(IProxy callbackProxy, final ICallback cb, IExpression expression) { |
| final Integer callbackID = new Integer(++fNextCallbackID); |
| fCallbackIDToCallback.put(callbackID, cb); |
| if (callbackProxy.isBeanProxy()) { |
| fBeanProxyToCallbackID.put(callbackProxy, callbackID); |
| } else { |
| ((ExpressionProxy) callbackProxy).addProxyListener(new ExpressionProxy.ProxyAdapter() { |
| public void proxyResolved(ProxyEvent event) { |
| fBeanProxyToCallbackID.put(event.getProxy(), callbackID); |
| } |
| }); |
| } |
| expression.createSimpleMethodInvoke(initializeCallbackMethodProxy, callbackProxy, new IProxy[] {vmServerProxy, fProxyFactoryRegistry.getBeanProxyFactory().createBeanProxyWith(callbackID.intValue())}, false); |
| |
| } |
| |
| OutputStream requestStream(final int aCallbackID, final int aMsgID){ |
| final PipedOutputStream result = new PipedOutputStream(); |
| PipedInputStream tempStream = null; |
| try { |
| tempStream = new PipedInputStream(result); |
| } catch ( IOException exc ) { |
| ProxyPlugin.getPlugin().getLogger().log(new Status(IStatus.WARNING, ProxyPlugin.getPlugin().getBundle().getSymbolicName(), 0, "", exc)); //$NON-NLS-1$ |
| return null; |
| } |
| final PipedInputStream inputStream = tempStream; |
| Thread streamProcessor = new Thread(){ |
| public void run(){ |
| ICallback ideCallback = (ICallback)fCallbackIDToCallback.get(new Integer(aCallbackID)); |
| if (ideCallback != null) { |
| try { |
| ideCallback.calledBackStream(aMsgID, inputStream); |
| } finally { |
| try { |
| inputStream.close(); // Make sure it's closed. |
| } catch ( IOException exc ){ |
| ProxyPlugin.getPlugin().getLogger().log(new Status(IStatus.WARNING, ProxyPlugin.getPlugin().getBundle().getSymbolicName(), 0, "", exc)); //$NON-NLS-1$ |
| } |
| } |
| } |
| } |
| }; |
| streamProcessor.start(); |
| return result; |
| } |
| |
| Object vmCallback(int aCallbackID ,int aMsgID, Object[] parms){ |
| // Find the bean proxy that registered with the ID |
| ICallback ideCallback = (ICallback) fCallbackIDToCallback.get(new Integer(aCallbackID)); |
| Object callbackResult = null; |
| if ( parms.length == 1 ) { |
| callbackResult = ideCallback.calledBack(aMsgID,(IBeanProxy)parms[0]); |
| } else { |
| callbackResult = ideCallback.calledBack(aMsgID,parms); |
| } |
| return callbackResult; |
| } |
| |
| Object vmCallback(int aCallbackID ,int aMsgID, Object parm){ |
| // Find the bean proxy that registered with the ID |
| ICallback ideCallback = (ICallback) fCallbackIDToCallback.get(new Integer(aCallbackID)); |
| return ideCallback.calledBack(aMsgID,parm); |
| } |
| |
| public void deregisterCallback(IBeanProxy aBeanProxy){ |
| // Remove the callback from both maps. The actual unregistering of the callback |
| // on the target VM is done separately by the object that added the event handler on the target VM |
| Integer callbackID = (Integer) fBeanProxyToCallbackID.remove(aBeanProxy); |
| fCallbackIDToCallback.remove(callbackID); |
| } |
| } |