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As extensões que utilizam as APIs de WebExtension são fornecidas com várias opções de interface do utilizador, e assim, as suas funcionalidades podem ficar disponíveis para o utilizador. Um resumo dessas opções é fornecido abaixo, com uma introdução mais detalhada para cada opção da interface do utilziador nesta secção .
For advice on using these UI components to create a great user experience in your extension, please see the User experience best practices article.
|Opção de UI||Descrição||Exemplo|
|Browser toolbar button||A button on the browser toolbar that dispatches an event to the extension when clicked. By default, the button is visible in all tabs.|
|Browser toolbar button with a popup||A popup on a button in the browser toolbar that opens when the button is clicked. The popup is defined in an HTML document that handles the user interaction.|
|Address bar button||A button on the browser address bar that dispatches an event to the extension when clicked. By default, the button is hidden in all tabs.|
|Address bar button with a popup||A popup on a button in the browser address bar that opens when the button is clicked. The popup is defined in an HTML document that handles the user interaction.|
|Context menu items||Menu items, checkboxes, and radio buttons on one or more of the browser's context menus. Also, menus can be structured by adding separators. When menu items are clicked, an event is dispatched to the extension.|
An HTML document displayed next to a web page, with the option for unique content per page. The sidebar is opened when the extension is installed, then obeys the user's sidebar visibility selection. User interaction within the sidebar is handled by its HTML document.
|Options page||A page that enables you to define preferences for your extension that your users can change. The user can access this page in the from the browser's add-ons manager.|
|Bundled web pages||Use web pages included in your extension to provide forms, help, or any other content required, within windows or tabs.|
|Notifications||Transient notifications displayed to the user through the underlying operating system's notifications mechanism. Dispatches an event to the extension when the user clicks a notification, or when a notification closes (either automatically or at the user's request).|
|Address bar suggestions||Offer custom address bar suggestions when the user enters a keyword.|
|Developer tools panels||A tab with an associated HTML document that displays in the browser's developer tools.|
The following how-to guides provide step-by-step guidance to creating some of these user interface options: