Mercurial > projects > dwt-win
view dwt/ole/win32/OlePropertyChangeSink.d @ 301:244e3774d515
Fixed missing casts to interface types.
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 28 Aug 2008 15:57:57 +0200 |
parents | fd9c62a2998e |
children |
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/******************************************************************************* * Copyright (c) 2000, 2007 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.ole.win32.OlePropertyChangeSink; import dwt.DWT; import dwt.DWTException; import dwt.internal.ole.win32.COM; import dwt.internal.ole.win32.extras; import dwt.internal.ole.win32.ifs; import dwt.ole.win32.OleControlSite; import dwt.ole.win32.OleEventTable; import dwt.ole.win32.OleListener; import dwt.ole.win32.OleEvent; import dwt.ole.win32.OleEventTable; import dwt.ole.win32.OLE; final class OlePropertyChangeSink { private OleControlSite controlSite; //private IUnknown objIUnknown; //private COMObject iUnknown; private _IPropertyNotifySinkImpl iPropertyNotifySink; private int refCount; private int propertyCookie; private OleEventTable eventTable; this(OleControlSite controlSite) { this.controlSite = controlSite; createCOMInterfaces(); } void addListener(int propertyID, OleListener listener) { if (listener is null) OLE.error (__FILE__, __LINE__, DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) eventTable = new OleEventTable (); eventTable.hook(propertyID, listener); } int AddRef() { refCount++; return refCount; } void connect(IUnknown objIUnknown) { // Set up property change notification sink IConnectionPointContainer cpc; if (objIUnknown.QueryInterface(&COM.IIDIConnectionPointContainer, cast(void**)&cpc) is COM.S_OK) { IConnectionPoint cp; if (cpc.FindConnectionPoint(&COM.IIDIPropertyNotifySink, &cp) is COM.S_OK) { uint cookie; if (cp.Advise(iPropertyNotifySink, &cookie) is COM.S_OK) { propertyCookie = cookie; } cp.Release(); } cpc.Release(); } } protected void createCOMInterfaces() { // register each of the interfaces that this object implements iPropertyNotifySink = new _IPropertyNotifySinkImpl(this); } void disconnect(IUnknown objIUnknown) { // disconnect property notification sink if (propertyCookie !is 0 && objIUnknown !is null) { IConnectionPointContainer cpc; if (objIUnknown.QueryInterface(&COM.IIDIConnectionPointContainer, cast(void**)&cpc) is COM.S_OK) { IConnectionPoint cp; if (cpc.FindConnectionPoint(&COM.IIDIPropertyNotifySink, &cp) is COM.S_OK) { if (cp.Unadvise(propertyCookie) is COM.S_OK) { propertyCookie = 0; } cp.Release(); } cpc.Release(); } } } private void disposeCOMInterfaces() { iPropertyNotifySink = null; } /** * Notify listeners of an event. * <p> * This method notifies all listeners that an event * has occurred. * * @param eventType the desired DWT event * @param event the event data * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT when handler is null</li> * </ul> * @exception DWTException <ul> * <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li> * <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li> * </ul> */ private void notifyListener (int eventType, OleEvent event) { if (event is null) OLE.error (__FILE__, __LINE__, DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; event.type = eventType; event.widget = controlSite; eventTable.sendEvent (event); } package int OnChanged(int dispID) { if (eventTable is null || !eventTable.hooks(dispID)) return COM.S_OK; OleEvent event = new OleEvent(); event.detail = OLE.PROPERTY_CHANGED; notifyListener(dispID,event); return COM.S_OK; } package int OnRequestEdit(int dispID) { if (eventTable is null || !eventTable.hooks(dispID)) return COM.S_OK; OleEvent event = new OleEvent(); event.doit = true; event.detail = OLE.PROPERTY_CHANGING; notifyListener(dispID,event); return (event.doit) ? COM.S_OK : COM.S_FALSE; } protected HRESULT QueryInterface(REFIID riid, void ** ppvObject) { if (riid is null || ppvObject is null) return COM.E_INVALIDARG; if (COM.IsEqualGUID(riid, &COM.IIDIPropertyNotifySink)) { *ppvObject = cast(void*)cast(IPropertyNotifySink)iPropertyNotifySink; AddRef(); return COM.S_OK; } *ppvObject = null; return COM.E_NOINTERFACE; } int Release() { refCount--; if (refCount is 0) { disposeCOMInterfaces(); } return refCount; } void removeListener(int propertyID, OleListener listener) { if (listener is null) OLE.error (__FILE__, __LINE__, DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (propertyID, listener); } } private class _IPropertyNotifySinkImpl : IPropertyNotifySink { OlePropertyChangeSink parent; this(OlePropertyChangeSink p) { parent = p; } extern (Windows): // interface of IUnknown HRESULT QueryInterface(REFIID riid, void ** ppvObject) { return parent.QueryInterface(riid, ppvObject); } ULONG AddRef() { return parent.AddRef(); } ULONG Release() { return parent.Release(); } // interface of IPropertyNotifySink int OnChanged(int dispID) { return parent.OnChanged(dispID); } int OnRequestEdit(int dispID) { return parent.OnRequestEdit(dispID); } }