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1
11 package org.eclipse.swt.ole.win32;
12
13 import org.eclipse.swt.*;
14 import org.eclipse.swt.internal.ole.win32.*;
15
16 final class OleEventSink
17 {
18 private OleControlSite widget;
19
20 private COMObject iDispatch;
21 private int refCount;
22
23 private IUnknown objIUnknown;
24 private int eventCookie;
25 private GUID eventGuid;
26
27 private OleEventTable eventTable;
28
29 OleEventSink(OleControlSite widget, int iUnknown, GUID riid) {
30
31 this.widget = widget;
32 this.eventGuid = riid;
33 this.objIUnknown = new IUnknown(iUnknown);
34
35 createCOMInterfaces();
36 }
37
38 void connect () {
39 int[] ppvObject = new int[1];
40 if (objIUnknown.QueryInterface(COM.IIDIConnectionPointContainer, ppvObject) == COM.S_OK) {
41 IConnectionPointContainer cpc = new IConnectionPointContainer(ppvObject[0]);
42 int[] ppCP = new int[1];
43 if (cpc.FindConnectionPoint(eventGuid, ppCP) == COM.S_OK) {
44 IConnectionPoint cp = new IConnectionPoint(ppCP[0]);
45 int[] pCookie = new int[1];
46 if (cp.Advise(iDispatch.getAddress(), pCookie) == COM.S_OK)
47 eventCookie = pCookie[0];
48 cp.Release();
49 }
50 cpc.Release();
51 }
52 }
53 void addListener(int eventID, OleListener listener) {
54 if (listener == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
55 if (eventTable == null) eventTable = new OleEventTable ();
56 eventTable.hook(eventID, listener);
57 }
58 int AddRef() {
59 refCount++;
60 return refCount;
61 }
62 private void createCOMInterfaces() {
63 iDispatch = new COMObject(new int[]{2, 0, 0, 1, 3, 4, 8}){
64 public int method0(int[] args) {return QueryInterface(args[0], args[1]);}
65 public int method1(int[] args) {return AddRef();}
66 public int method2(int[] args) {return Release();}
67 public int method6(int[] args) {return Invoke(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7]);}
71 };
72 }
73 void disconnect() {
74 if (eventCookie != 0 && objIUnknown != null) {
76 int[] ppvObject = new int[1];
77 if (objIUnknown.QueryInterface(COM.IIDIConnectionPointContainer, ppvObject) == COM.S_OK) {
78 IConnectionPointContainer cpc = new IConnectionPointContainer(ppvObject[0]);
79 if (cpc.FindConnectionPoint(eventGuid, ppvObject) == COM.S_OK) {
80 IConnectionPoint cp = new IConnectionPoint(ppvObject[0]);
81 if (cp.Unadvise(eventCookie) == COM.S_OK) {
82 eventCookie = 0;
83 }
84 cp.Release();
85 }
86 cpc.Release();
87 }
88 }
89 }
90 private void disposeCOMInterfaces() {
91 if (iDispatch != null)
92 iDispatch.dispose();
93 iDispatch = null;
94
95 }
96 private int Invoke(int dispIdMember, int riid, int lcid, int dwFlags, int pDispParams, int pVarResult, int pExcepInfo, int pArgErr)
97 {
98 if (eventTable == null || !eventTable.hooks(dispIdMember)) return COM.S_OK;
99
100 Variant[] eventInfo = null;
103 if (pDispParams != 0) {
104 DISPPARAMS dispParams = new DISPPARAMS();
105 COM.MoveMemory(dispParams, pDispParams, DISPPARAMS.sizeof);
106 eventInfo = new Variant[dispParams.cArgs];
107 int size = Variant.sizeof;
108 int offset = (dispParams.cArgs - 1) * size;
109
110 for (int j = 0; j < dispParams.cArgs; j++){
111 eventInfo[j] = new Variant();
112 eventInfo[j].setData(dispParams.rgvarg + offset);
113 offset = offset - size;
114 }
115 }
116
117 OleEvent event = new OleEvent();
118 event.arguments = eventInfo;
119 notifyListener(dispIdMember,event);
120 return COM.S_OK;
121 }
122
139 private void notifyListener (int eventType, OleEvent event) {
140 if (event == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
141 if (eventTable == null) return;
142 event.type = eventType;
143 event.widget = widget;
144 eventTable.sendEvent (event);
145 }
146 private int QueryInterface(int riid, int ppvObject) {
147
148 if (riid == 0 || ppvObject == 0)
149 return COM.E_INVALIDARG;
150 GUID guid = new GUID();
151 COM.MoveMemory(guid, riid, GUID.sizeof);
152
153 if ( COM.IsEqualGUID(guid, COM.IIDIUnknown) || COM.IsEqualGUID(guid, COM.IIDIDispatch) ||
154 COM.IsEqualGUID(guid, eventGuid)) {
155 COM.MoveMemory(ppvObject, new int[] {iDispatch.getAddress()}, 4);
156 AddRef();
157 return OLE.S_OK;
158 }
159
160 COM.MoveMemory(ppvObject, new int[] {0}, 4);
161 return COM.E_NOINTERFACE;
162 }
163 int Release() {
164 refCount--;
165 if (refCount == 0) {
166 disposeCOMInterfaces();
167 }
168
169 return refCount;
170 }
171 void removeListener(int eventID, OleListener listener) {
172 if (listener == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
173 if (eventTable == null) return;
174 eventTable.unhook (eventID, listener);
175 }
176 boolean hasListeners() {
177 return eventTable.hasEntries();
178 }
179 }
180 |
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