Jaa

DeferredPermissionRequest object

  • Artikkeli

Note

The features described in this document are no longer being maintained. For more information on the new WebView2 control, see Introduction to Microsoft Edge WebView2 (Preview).

Represents a deferred request by the content of the webview for end-user permission to access specialized device functionality (such as geolocation, or pointer lock).

// In this sample, when we receive a permission request we construct some basic UI to ask the
// user if they want to give permission.
webview.addEventListener("MSWebViewPermissionRequested", permissionRequestedEventArgs => {
    const permissionRequest = permissionRequestedEventArgs.permissionRequest;
    const requestContainer = document.createElement("div");

    // We use this function as the handler for the allow and deny buttons.
    function completeDeferredPermissionRequest(allow) {
        // Find the DeferredPermissionRequest using the id of the PermissionRequest we deferred.
        const deferredPermissionRequest = webview.getDeferredPermissionRequestById(permissionRequest.id);
        if (allow) {
            deferredPermissionRequest.allow();
        }
        else {
            deferredPermissionRequest.deny();
        }
        requestContainer.parentElement.removeChild(requestContainer);
    }

    // Construct some simple UI to tell the user about the permission request and get their
    // feedback via the allow and deny buttons
    const description = document.createElement("span");
    description.textContent = "Allow " + uri + " to access " + type + "?";

    const allow = document.createElement("button");
    allow.textContent = "Allow";
    allow.addEventListener("click", () => completeDeferredPermissionRequest(true));

    const deny = document.createElement("button");
    deny.textContent = "Deny";
    deny.addEventListener("click", () => completeDeferredPermissionRequest(false));

    requestContainer.appendChild(description);
    requestContainer.appendChild(allow);
    requestContainer.appendChild(deny);
    document.body.appendChild(requestContainer);

    permissionRequest.defer();
});

Methods

allow

Allows the request for permission.

deferredPermissionRequest.allow();

Parameters

This method has no parameters.

Return value

This method does not return a value.

deny

Denies the request for permission.

deferredPermissionRequest.deny();

Parameters

This method has no parameters.

Return value

This method does not return a value.

Properties

id

A unique ID that can be used to correlate the current DeferredPermissionRequest with a PermissionRequest object from a previous MSWebViewPermissionRequested event. See the PermissionRequested.defer method.

This property is read-only.

var id = deferredPermissionRequest.id;
Property value

Type: Unsigned long

type

The type of permission being requested. This may be one of the following string values:

  • geolocation: access to location data via navigator.geolocation.
  • unlimitedIndexedDBQuota: allow IndexedDB APIs to ignore the usual stored data size limit.
  • media: access to the microphone and camera via navigator.getUserMedia.
  • pointerlock: ability to lock and control the mouse pointer via Element.requestPointerLock.
  • webnotifications: ability to show desktop notifications via window.Notification.
  • screen: ability to take screen shots via the Media Capture API.
  • immersiveview: ability to control a VR display.

This property is read-only.

var type = deferredPermissionRequest.type;

Property value

Type: String

uri

The Uniform Resource Identifier (URI) of the document requesting permission.

This property is read-only.

var uri = deferredPermissionRequest.uri;
Property value

Type: String

Requirements
Minimum supported client Windows 10 [Windows Store apps only]
Minimum supported server Not supported
Minimum supported phone Not supported