/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef SWITCHTOUITHREAD_H #define SWITCHTOUITHREAD_H #include "nsISupports.h" // foreward declaration struct MethodInfo; #define WM_CALLMETHOD 'CAme' /** * Switch thread to match the thread the widget was created in so messages will be dispatched. */ class nsSwitchToUIThread { public: virtual bool CallMethod(MethodInfo *info) = 0; // Enumeration of the methods which are accessable on the "main GUI thread" // via the CallMethod(...) mechanism... // see nsSwitchToUIThread enum { CREATE = 0x0101, CREATE_NATIVE, DESTROY, SET_FOCUS, GOT_FOCUS, KILL_FOCUS, ONMOUSE, ONDROP, ONWHEEL, ONPAINT, ONRESIZE, CLOSEWINDOW, ONKEY, BTNCLICK, ONACTIVATE, ONMOVE, ONWORKSPACE #if defined(BeIME) , ONIME #endif }; }; // // Structure used for passing the information necessary for synchronously // invoking a method on the GUI thread... // struct MethodInfo { nsISupports *widget; nsSwitchToUIThread *target; uint32 methodId; int nArgs; uint32 *args; MethodInfo(nsISupports *ref, nsSwitchToUIThread *obj, uint32 id, int numArgs = 0, uint32 *arguments = 0) { widget = ref; NS_ADDREF(ref); target = obj; methodId = id; nArgs = numArgs; args = new uint32 [numArgs]; memcpy(args, arguments, sizeof(uint32) * numArgs); } ~MethodInfo() { delete [] args; NS_RELEASE(widget); } bool Invoke() { return target->CallMethod(this); } }; #endif // TOUITHRD_H