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