devtools.panels.ExtensionSidebarPane.onHidden

Called when the sidebar pane becomes hidden, as a result of the user switching away from it.

Syntax

browser.devtools.panels.onHidden.addListener(listener)
browser.devtools.panels.onHidden.removeListener(listener)
browser.devtools.panels.onHidden.hasListener(listener)

Events have three functions:

addListener(listener): Adds a listener to this event.
removeListener(listener): Stops listening to this event. The listener argument is the listener to remove.
hasListener(listener): Checks whether listener is registered for this event. Returns true if it is listening, and false otherwise.

addListener syntax

Parameters

listener: Function called when this event occurs. This function will be passed no arguments.

Examples

Create a sidebar pane, and log show and hide events.

function onCreated(sidebarPane) {
  sidebarPane.onShown.addListener(() => {
    console.log("Shown");
  });

  sidebarPane.onHidden.addListener(() => {
    console.log("Hidden");
  });
}

browser.devtools.panels.elements.createSidebarPane("My pane").then(onCreated);

Browser compatibility

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