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---
title: sessions.onChanged
slug: Mozilla/Add-ons/WebExtensions/API/sessions/onChanged
tags:
- API
- Add-ons
- Event
- Extensions
- Non-standard
- Reference
- WebExtensions
- onChanged
- sessions
translation_of: Mozilla/Add-ons/WebExtensions/API/sessions/onChanged
---
<div>{{AddonSidebar()}}</div>
<p>Mise en place lorsque une liste d'onglets fermes ou de fenêtre changes.</p>
<h2 id="Syntaxe">Syntaxe</h2>
<pre class="syntaxbox brush:js">browser.sessions.onChanged.addListener(listener)
browser.sessions.onChanged.removeListener(listener)
browser.sessions.onChanged.hasListener(listener)
</pre>
<p>Les événements ont trois fonctions :</p>
<dl>
<dt><code>addListener(callback)</code></dt>
<dd>Ajoute un auditeur à un événement.</dd>
<dt><code>removeListener(listener)</code></dt>
<dd>Arrêtez d'écouter cet événement. L'argument de l'auditeur est un auditeur à supprimer.</dd>
<dt><code>hasListener(listener)</code></dt>
<dd>Vérifiez si l'auditeur est enregistré pour cet événement. Renvoie Vrai s'il écoute. Sinon Faux.</dd>
</dl>
<h2 id="Syntaxe_addListener">Syntaxe addListener</h2>
<h3 id="Paramètres">Paramètres</h3>
<dl>
<dt><code>callback</code></dt>
<dd>
<p>Fonction qui sera appelée lors de l'événement. Il ne passe aucun paramètre.</p>
</dd>
</dl>
<h2 id="Compatibilité_du_navigateur">Compatibilité du navigateur</h2>
<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
<p><span class="diff_add">{{Compat("webextensions.api.sessions.onChanged")}}</span></p>
<h2 id="Exemples">Exemples</h2>
<p>Cette extension écoute <code>onChanged</code>, puis restaure immédiatement la dernière session fermée, ce qui rend impossible de fermer les fenêtres ou les onglets :</p>
<pre class="brush: js">function restoreSession(sessionInfos) {
if (!sessionInfos.length) {
console.log("No sessions found")
return;
}
let sessionInfo = sessionInfos[0];
if (sessionInfo.tab) {
browser.sessions.restore(sessionInfo.tab.sessionId);
} else {
browser.sessions.restore(sessionInfo.window.sessionId);
}
}
function onError(error) {
console.log(error);
}
function restoreMostRecent() {
var gettingSessions = browser.sessions.getRecentlyClosed({
maxResults: 1
});
gettingSessions.then(restoreSession, onError);
}
browser.sessions.onChanged.addListener(restoreMostRecent);</pre>
<p>{{WebExtExamples}}</p>
<div class="note"><strong>Remerciements</strong>
<p>Cette API est basée sur l'API Chromium <a href="https://developer.chrome.com/extensions/sessions"><code>chrome.sessions</code></a>.</p>
<p>Les données de compatibilité relatives à Microsoft Edge sont fournies par Microsoft Corporation et incluses ici sous la licence Creative Commons Attribution 3.0 pour les États-Unis.</p>
</div>
<div class="hidden">
<pre>// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</pre>
</div>
|
