mirror of
https://github.com/mozilla/gecko-dev.git
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124 lines
3.7 KiB
C++
124 lines
3.7 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 Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Olli Pettay <Olli.Pettay@helsinki.fi> (Original Author)
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 "nsIFocusEventSuppressor.h"
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#include "nsTArray.h"
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class nsFocusEventSuppressorService : public nsIFocusEventSuppressorService
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{
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public:
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NS_DECL_ISUPPORTS
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virtual void AddObserverCallback(nsFocusEventSuppressorCallback aCallback)
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{
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NS_AddFocusSuppressorCallback(aCallback);
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}
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virtual void Suppress()
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{
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NS_SuppressFocusEvent();
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}
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virtual void Unsuppress()
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{
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NS_UnsuppressFocusEvent();
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}
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};
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static nsTArray<nsFocusEventSuppressorCallback>* sCallbacks = nsnull;
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static PRUint32 sFocusSuppressCount = 0;
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NS_IMPL_ADDREF(nsFocusEventSuppressorService)
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NS_IMPL_RELEASE(nsFocusEventSuppressorService)
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NS_INTERFACE_MAP_BEGIN(nsFocusEventSuppressorService)
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NS_INTERFACE_MAP_ENTRY(nsIFocusEventSuppressorService)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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void
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NS_AddFocusSuppressorCallback(nsFocusEventSuppressorCallback aCallback)
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{
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if (aCallback) {
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if (!sCallbacks) {
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sCallbacks = new nsTArray<nsFocusEventSuppressorCallback>(2);
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if (!sCallbacks) {
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NS_WARNING("Out of memory!");
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return;
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}
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} else if (sCallbacks->Contains(aCallback)) {
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return;
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}
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sCallbacks->AppendElement(aCallback);
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}
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}
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void
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NS_SuppressFocusEvent()
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{
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++sFocusSuppressCount;
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if (sFocusSuppressCount == 1 && sCallbacks) {
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for (PRUint32 i = 0; i < sCallbacks->Length(); ++i) {
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sCallbacks->ElementAt(i)(PR_TRUE);
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}
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}
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}
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void
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NS_UnsuppressFocusEvent()
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{
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--sFocusSuppressCount;
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if (sFocusSuppressCount == 0 && sCallbacks) {
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for (PRUint32 i = 0; i < sCallbacks->Length(); ++i) {
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sCallbacks->ElementAt(i)(PR_FALSE);
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}
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}
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}
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void
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NS_ShutdownFocusSuppressor()
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{
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delete sCallbacks;
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sCallbacks = nsnull;
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}
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nsresult
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NS_NewFocusEventSuppressorService(nsIFocusEventSuppressorService** aResult)
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{
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nsIFocusEventSuppressorService* it = new nsFocusEventSuppressorService();
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NS_ENSURE_TRUE(it, NS_ERROR_OUT_OF_MEMORY);
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NS_ADDREF(*aResult = it);
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return NS_OK;
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}
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