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---
title: devtools.panels
slug: Mozilla/Add-ons/WebExtensions/API/devtools.panels
tags:
- API
- Extensões
- Extensões da Web
- Extras
- Referencia
- devtools.panels
translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.panels
---
<div>{{AddonSidebar}}</div>
<div class="note">
<p>Embora as APIs sejam baseadas no <a href="https://developer.chrome.com/extensions/devtools">Chrome devtools APIs</a>, ainda existem muitas funcionalidades que ainda não estão implementadas no Firefox, e por isso, não estão documentadas aqui. Para ver quais as funcionalidades que estão atualmente em falta, por favor, consulte <a href="/pt-PT/Add-ons/WebExtensions/Extensão_das_ferramentas_de_desenvolvimento#Limitações_das_APIs_de_devtools">Limitações das APIs de devtools</a>.</p>
</div>
<p>The <code>devtools.panels</code> API lets a devtools extension define its user interface inside the devtools window.</p>
<p>The devtools window hosts a number of separate tools - the JavaScript Debugger, Network Monitor, and so on. A row of tabs across the top lets the user switch between the different tools. The window hosting each tool's user interface is called a "panel".</p>
<p>With the <code>devtools.panels</code> API you can create new panels in the devtools window.</p>
<p>Like all the <code>devtools</code> APIs, this API is only available to code running in the document defined in the <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/devtools_page">devtools_page</a> manifest.json key, or in other devtools documents created by the extension (such as the panel's own document). See <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/Extending_the_developer_tools">Extending the developer tools</a> for more.</p>
<h2 id="Tipos">Tipos</h2>
<dl>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel">devtools.panels.ElementsPanel</a></code></dt>
<dd>Represents the HTML/CSS inspector in the browser's devtools.</dd>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ExtensionPanel">devtools.panels.ExtensionPanel</a></code></dt>
<dd>Represents a devtools panel created by the extension.</dd>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ExtensionSidebarPane">devtools.panels.ExtensionSidebarPane</a></code></dt>
<dd>Represents a pane that an extension has added to the HTML/CSS inspector in the browser's devtools.</dd>
</dl>
<h2 id="Propriedades">Propriedades</h2>
<dl>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/elements">devtools.panels.elements</a></code></dt>
<dd>A reference to an <code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/ElementsPanel">ElementsPanel</a></code> object.</dd>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/themeName">devtools.panels.themeName</a></code></dt>
<dd>The name of the current devtools theme.</dd>
</dl>
<h2 id="Funções">Funções</h2>
<dl>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/create">devtools.panels.create()</a></code></dt>
<dd>Creates a new devtools panel.</dd>
</dl>
<h2 id="Eventos">Eventos</h2>
<dl>
<dt><code><a href="/en-US/Add-ons/WebExtensions/API/devtools.panels/onThemeChanged">devtools.panels.onThemeChanged</a></code></dt>
<dd>Fired when the devtools theme changes.</dd>
</dl>
<h2 id="Compatibilidade_do_navegador">Compatibilidade do navegador</h2>
<p>{{Compat("webextensions.api.devtools.panels", 2)}}</p>
<p>{{WebExtExamples("h2")}}</p>
<div class="note"><strong>Reconhecimentos</strong>
<p>This API is based on Chromium's <a href="https://developer.chrome.com/extensions/devtools_panels"><code>chrome.devtools.panels</code></a> API.</p>
<p>Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.</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>
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