devtools.panels

Note: Although the APIs are based on the Chrome devtools APIs, there are still many features that are not yet implemented in Firefox, and therefore are not documented here. To see which features are currently missing please see Limitations of the devtools APIs.

The devtools.panels API lets a devtools extension define its user interface inside the devtools window.

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".

With the devtools.panels API you can create new panels in the devtools window.

Like all the devtools APIs, this API is only available to code running in the document defined in the devtools_page manifest.json key, or in other devtools documents created by the extension (such as the panel's own document). See Extending the developer tools for more.

Types

devtools.panels.ElementsPanel

Represents the HTML/CSS inspector in the browser's devtools.

devtools.panels.ExtensionPanel

Represents a devtools panel created by the extension.

devtools.panels.ExtensionSidebarPane

Represents a pane that an extension has added to the HTML/CSS inspector in the browser's devtools.

Properties

devtools.panels.elements

A reference to an ElementsPanel object.

devtools.panels.themeName

The name of the current devtools theme.

Functions

devtools.panels.create()

Creates a new devtools panel.

Events

devtools.panels.onThemeChanged

Fired when the devtools theme changes.

Example extensions

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
panels
Button
ElementsPanel
ElementsPanel.createSidebarPane
ElementsPanel.onSelectionChanged
ExtensionPanel
ExtensionPanel.createStatusBarButton
ExtensionPanel.onHidden
ExtensionPanel.onSearch
ExtensionPanel.onShown
SourcesPanel
SourcesPanel.createSidebarPane
SourcesPanel.onSelectionChanged
create
create.iconPath
create.pagePath
create.title
elements
onThemeChanged
openResource
openResource.columnNumber
openResource.lineNumber
openResource.url
setOpenResourceHandler
sources
themeName

Note: This API is based on Chromium's chrome.devtools.panels API.