diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OlePropertyChangeSink.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OlePropertyChangeSink.java | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OlePropertyChangeSink.java b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OlePropertyChangeSink.java new file mode 100755 index 0000000000..4a4a84b75a --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OlePropertyChangeSink.java @@ -0,0 +1,179 @@ +package org.eclipse.swt.ole.win32;
+
+import org.eclipse.swt.internal.ole.win32.*;
+import org.eclipse.swt.*;
+
+/*
+ * Licensed Materials - Property of IBM,
+ * (c) Copyright IBM Corp. 1998, 2000 All Rights Reserved
+ */
+
+final class OlePropertyChangeSink {
+
+ private OleControlSite controlSite;
+ //private IUnknown objIUnknown;
+
+ private COMObject iUnknown;
+ private COMObject iPropertyNotifySink;
+
+ private int refCount;
+
+ private int propertyCookie;
+
+ private OleEventTable eventTable;
+
+OlePropertyChangeSink(OleControlSite controlSite) {
+
+ this.controlSite = controlSite;
+
+ createCOMInterfaces();
+}
+void addListener(int propertyID, OleListener listener) {
+ if (listener == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) eventTable = new OleEventTable ();
+ eventTable.hook(propertyID, listener);
+}
+int AddRef() {
+ refCount++;
+ return refCount;
+}
+void connect(IUnknown objIUnknown) {
+
+ // Set up property change notification sink
+ int[] ppvObject = new int[1];
+ if (objIUnknown.QueryInterface(COM.IIDIConnectionPointContainer, ppvObject) == COM.S_OK) {
+ IConnectionPointContainer cpc = new IConnectionPointContainer(ppvObject[0]);
+ if (cpc.FindConnectionPoint(COM.IIDIPropertyNotifySink, ppvObject) == COM.S_OK) {
+ IConnectionPoint cp = new IConnectionPoint(ppvObject[0]);
+ int[] cookie = new int[1];
+ if (cp.Advise(iPropertyNotifySink.getAddress(), cookie) == COM.S_OK) {
+ propertyCookie = cookie[0];
+ }
+ cp.Release();
+ }
+ cpc.Release();
+ }
+}
+private void createCOMInterfaces() {
+ // register each of the interfaces that this object implements
+ iUnknown = new COMObject(new int[]{2, 0, 0}){
+ public int method0(int[] args) {return QueryInterface(args[0], args[1]);}
+ public int method1(int[] args) {return AddRef();}
+ public int method2(int[] args) {return Release();}
+ };
+
+ iPropertyNotifySink = new COMObject(new int[]{2, 0, 0, 1, 1}){
+ public int method0(int[] args) {return QueryInterface(args[0], args[1]);}
+ public int method1(int[] args) {return AddRef();}
+ public int method2(int[] args) {return Release();}
+ public int method3(int[] args) {return OnChanged(args[0]);}
+ public int method4(int[] args) {return OnRequestEdit(args[0]);}
+ };
+}
+void disconnect(IUnknown objIUnknown) {
+
+ // disconnect property notification sink
+ if (propertyCookie != 0 && objIUnknown != null) {
+ int[] ppvObject = new int[1];
+ if (objIUnknown.QueryInterface(COM.IIDIConnectionPointContainer, ppvObject) == COM.S_OK) {
+ IConnectionPointContainer cpc = new IConnectionPointContainer(ppvObject[0]);
+ if (cpc.FindConnectionPoint(COM.IIDIPropertyNotifySink, ppvObject) == COM.S_OK) {
+ IConnectionPoint cp = new IConnectionPoint(ppvObject[0]);
+ if (cp.Unadvise(propertyCookie) == COM.S_OK) {
+ propertyCookie = 0;
+ }
+ cp.Release();
+ }
+ cpc.Release();
+ }
+ }
+}
+private void disposeCOMInterfaces() {
+
+ if (iUnknown != null);
+ iUnknown.dispose();
+ iUnknown = null;
+
+ if (iPropertyNotifySink != null)
+ iPropertyNotifySink.dispose();
+ iPropertyNotifySink = null;
+
+}
+/**
+* Notify listeners of an event.
+* <p>
+* This method notifies all listeners that an event
+* has occurred.
+*
+* @param eventType the desired SWT event
+* @param event the event data
+*
+* @exception SWTError <ul>
+* <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+* <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+* <li>ERROR_NULL_ARGUMENT when handler is null</li>
+* </ul>
+*/
+private void notifyListener (int eventType, OleEvent event) {
+ if (event == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ event.type = eventType;
+ event.widget = controlSite;
+ eventTable.sendEvent (event);
+}
+private int OnChanged(int dispID) {
+
+ if (eventTable == null || !eventTable.hooks(dispID)) return COM.S_OK;
+
+ OleEvent event = new OleEvent();
+ event.detail = OLE.PROPERTY_CHANGED;
+ notifyListener(dispID,event);
+
+ return COM.S_OK;
+}
+private int OnRequestEdit(int dispID) {
+
+ if (eventTable == null || !eventTable.hooks(dispID)) return COM.S_OK;
+
+ OleEvent event = new OleEvent();
+ event.doit = true;
+ event.detail = OLE.PROPERTY_CHANGING;
+
+ notifyListener(dispID,event);
+
+ if (event.doit) return COM.S_OK;
+
+ return COM.S_FALSE;
+}
+private int QueryInterface(int riid, int ppvObject) {
+ if (riid == 0 || ppvObject == 0)
+ return COM.E_INVALIDARG;
+ GUID guid = new GUID();
+ COM.MoveMemory(guid, riid, GUID.sizeof);
+ if (COM.IsEqualGUID(guid, COM.IIDIUnknown)) {
+ COM.MoveMemory(ppvObject, new int[] {iUnknown.getAddress()}, 4);
+ AddRef();
+ return COM.S_OK;
+ }
+ if (COM.IsEqualGUID(guid, COM.IIDIPropertyNotifySink)) {
+ COM.MoveMemory(ppvObject, new int[] {iPropertyNotifySink.getAddress()}, 4);
+ AddRef();
+ return COM.S_OK;
+ }
+ COM.MoveMemory(ppvObject, new int[] {0}, 4);
+ return COM.E_NOINTERFACE;
+}
+int Release() {
+ refCount--;
+ if (refCount == 0) {
+ disposeCOMInterfaces();
+ }
+
+ return refCount;
+}
+void removeListener(int propertyID, OleListener listener) {
+ if (listener == null) OLE.error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ eventTable.unhook (propertyID, listener);
+}
+}
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