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89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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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 Code.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2010
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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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#include "X11Util.h"
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namespace mozilla {
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ScopedXErrorHandler::ErrorEvent* ScopedXErrorHandler::sXErrorPtr;
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int
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ScopedXErrorHandler::ErrorHandler(Display *, XErrorEvent *ev)
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{
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// only record the error if no error was previously recorded.
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// this means that in case of multiple errors, it's the first error that we report.
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if (!sXErrorPtr->mError.error_code)
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sXErrorPtr->mError = *ev;
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return 0;
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}
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ScopedXErrorHandler::ScopedXErrorHandler()
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{
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// let sXErrorPtr point to this object's mXError object, but don't reset this mXError object!
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// think of the case of nested ScopedXErrorHandler's.
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mOldXErrorPtr = sXErrorPtr;
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sXErrorPtr = &mXError;
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mOldErrorHandler = XSetErrorHandler(ErrorHandler);
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}
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ScopedXErrorHandler::~ScopedXErrorHandler()
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{
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sXErrorPtr = mOldXErrorPtr;
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XSetErrorHandler(mOldErrorHandler);
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}
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bool
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ScopedXErrorHandler::SyncAndGetError(Display *dpy, XErrorEvent *ev)
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{
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XSync(dpy, False);
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return GetError(ev);
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}
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bool
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ScopedXErrorHandler::GetError(XErrorEvent *ev)
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{
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bool retval = mXError.mError.error_code != 0;
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if (ev)
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*ev = mXError.mError;
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mXError = ErrorEvent(); // reset
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return retval;
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}
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} // namespace mozilla
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