| 1 | /* |
| 2 | * $Id: ComInterfaceEntry.java,v 1.4 2005/12/02 19:59:57 hastings Exp $ |
| 3 | * |
| 4 | * (c) Copyright, Moebius Solutions, Inc., 2004 |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This material may be reproduced by or for the U. S. Government |
| 9 | * pursuant to the copyright license under the clause at |
| 10 | * DFARS 252.227-7014 (OCT 2001). |
| 11 | */ |
| 12 | package com.moesol.bindings.platform_sdk.component_services; |
| 13 | |
| 14 | public class ComInterfaceEntry { |
| 15 | private final GUID m_iid; |
| 16 | private final Class m_iface_class; |
| 17 | private IUnknown m_java_sink; |
| 18 | private long m_thunk_ptr; |
| 19 | |
| 20 | public ComInterfaceEntry(GUID iid, Class iface_class, IUnknown java_sink) { |
| 21 | m_iid = iid; |
| 22 | m_iface_class = iface_class; |
| 23 | m_java_sink = java_sink; |
| 24 | } |
| 25 | |
| 26 | public String toString() { |
| 27 | StringBuffer sb = new StringBuffer(); |
| 28 | sb.append('['); |
| 29 | sb.append(m_iface_class.getName()); |
| 30 | sb.append(' '); |
| 31 | sb.append(m_java_sink.getClass().getName()); |
| 32 | sb.append(' '); |
| 33 | sb.append(m_thunk_ptr); |
| 34 | sb.append(']'); |
| 35 | sb.append('\n'); |
| 36 | return sb.toString(); |
| 37 | } |
| 38 | |
| 39 | public GUID getIID() { |
| 40 | return m_iid; |
| 41 | } |
| 42 | public Class getIfaceClass() { |
| 43 | return m_iface_class; |
| 44 | } |
| 45 | public IUnknown getJavaSink() { |
| 46 | return m_java_sink; |
| 47 | } |
| 48 | |
| 49 | // TODO rename |
| 50 | public IUnknown getVtableInterface() { |
| 51 | if (m_thunk_ptr == 0) { |
| 52 | newThunk(); |
| 53 | } |
| 54 | return wrapThunk(); |
| 55 | } |
| 56 | |
| 57 | private void newThunk() { |
| 58 | m_thunk_ptr = jni_newThunk(m_java_sink, getIfaceClass(), getIID()._getStructureBytes()); |
| 59 | if (m_thunk_ptr == 0) { |
| 60 | throw new OutOfMemoryError("Unable to create vtable thunk"); |
| 61 | } |
| 62 | } |
| 63 | private static native long jni_newThunk(IUnknown java_sink, Class interface_class, byte[] iid_bytes); |
| 64 | |
| 65 | private IUnknown wrapThunk() { |
| 66 | assert m_thunk_ptr != 0; |
| 67 | if (m_thunk_ptr == 0) { |
| 68 | return null; |
| 69 | } |
| 70 | |
| 71 | InterfaceBuilder ib = new InterfaceBuilder(getIfaceClass()); |
| 72 | jni_wrapThunk(m_thunk_ptr, ib.getResult()); |
| 73 | return ib.getResult(); |
| 74 | } |
| 75 | private static native void jni_wrapThunk(long thunk_ptr, IUnknown result); |
| 76 | |
| 77 | |
| 78 | /** |
| 79 | * Should only be called by ComCoClass |
| 80 | */ |
| 81 | void deleteThunk() { |
| 82 | if (m_thunk_ptr == 0) { |
| 83 | return; |
| 84 | } |
| 85 | jni_deleteThunk(m_thunk_ptr); |
| 86 | } |
| 87 | private static native void jni_deleteThunk(long thunk_ptr); |
| 88 | } |