runtime.getContexts()

filter

An object containing criteria to match returned contexts against. Matching contexts must match all specified filters. If the object is empty, all contexts are returned.

contextIds Optional

An array of string. The IDs of contexts to return.

contextTypes Optional

An array of string. The types of extension views associated with contexts to return. Takes the values "BACKGROUND", "POPUP", "SIDE_PANEL", and "TAB".

documentIds Optional

An array of string. UUIDs of documents associated with the contexts to return.

documentOrigins Optional

An array of string. The origins of documents associated with the contexts to return.

documentUrls Optional

An array of string. The URLs of documents associated with the contexts to return.

frameIds Optional

An array of integer. The frame IDs for the contexts to return.

incognito Optional

boolean. Whether to return only contexts hosted in a private browsing tab.

tabIds Optional

An array of integer. The tab IDs for the contexts to return.

windowIds Optional

An array of integer. The window IDs for the contexts to return.

A Promise that is fulfilled with an array of objects, one for each context hosting extension content. The objects have these properties:

contextId

string. ID of the context.

contextType

string. The type of extension view. Returned as one of "BACKGROUND", "POPUP", "SIDE_PANEL", or "TAB".

documentId

string. UUID of the document associated with the context, or undefined if the context is not hosted in a document.

documentOrigin

string`. The origin of the document associated with the context or undefined if the context is not hosted in a document.

documentUrl

string. The URL of the document associated with the context or undefined if the context is not hosted in a document.

frameId

integer. The frame ID for the context or -1 if the context is not hosted in a frame.

incognito

boolean. Whether the context is hosted in a private browsing tab.

tabId

integer. The tab ID for the context or -1 if the context is not hosted in a tab.

windowId

integer. The window ID for the context or -1 if the context is not hosted in a window.

If there are no matching contexts, fulfilled with an empty array.

This example gets all the contexts associated with the extension in private browsing tabs, printing the tab ID, frame ID, and document URL for each context to the console:

function gotContextInfo(contexts) {
  for (const context of contexts) {
    if (context.tabId == -1) {
      console.log("Not hosted in a tab");
    } else {
      console.log(
        `Hosted in tab: ${context.tabId} and frame ${context.frameId} with URL ${context.documentUrl}`,
      );
    }
  }
}

let gettingContextInfo = browser.runtime.getContext({ incognito: true });
gettingContextInfo.then(gotContextInfo);