interface ICoreWebView2Profile4

interface ICoreWebView2Profile4
  : public ICoreWebView2Profile3

This is the ICoreWebView2Profile interface for the permission management APIs.

Summary

Members	Descriptions
GetNonDefaultPermissionSettings	Invokes the handler with a collection of all nondefault permission settings.
SetPermissionState	Sets permission state for the given permission kind and origin asynchronously.

Applies to

Product	Introduced
WebView2 Win32	1.0.1661.34
WebView2 Win32 Prerelease	1.0.1671

Members

GetNonDefaultPermissionSettings

Invokes the handler with a collection of all nondefault permission settings.

public HRESULT GetNonDefaultPermissionSettings(ICoreWebView2GetNonDefaultPermissionSettingsCompletedHandler * handler)

Use this method to get the permission state set in the current and previous sessions.

    CHECK_FAILURE(webView2_13->add_DOMContentLoaded(
        Callback<ICoreWebView2DOMContentLoadedEventHandler>(
            [this](
                ICoreWebView2* sender, ICoreWebView2DOMContentLoadedEventArgs* args) -> HRESULT
            {
                wil::unique_cotaskmem_string source;
                CHECK_FAILURE(sender->get_Source(&source));
                // Permission management APIs are only used on the app's
                // permission management page.
                if (source.get() != m_sampleUri)
                {
                    return S_OK;
                }
                // Get all the nondefault permissions and post them to the
                // app's permission management page. The permission management
                // page can present a list of custom permissions set for this
                // profile and let the end user modify them.
                CHECK_FAILURE(m_webViewProfile4->GetNonDefaultPermissionSettings(
                    Callback<ICoreWebView2GetNonDefaultPermissionSettingsCompletedHandler>(
                        [this, sender](
                            HRESULT code,
                            ICoreWebView2PermissionSettingCollectionView* collectionView)
                            -> HRESULT
                        {
                            UINT32 count;
                            collectionView->get_Count(&count);
                            for (UINT32 i = 0; i < count; i++)
                            {
                                wil::com_ptr<ICoreWebView2PermissionSetting> setting;
                                CHECK_FAILURE(collectionView->GetValueAtIndex(i, &setting));
                                COREWEBVIEW2_PERMISSION_KIND kind;
                                CHECK_FAILURE(setting->get_PermissionKind(&kind));
                                std::wstring kind_string = PermissionKindToString(kind);
                                COREWEBVIEW2_PERMISSION_STATE state;
                                CHECK_FAILURE(setting->get_PermissionState(&state));
                                wil::unique_cotaskmem_string origin;
                                CHECK_FAILURE(setting->get_PermissionOrigin(&origin));
                                std::wstring state_string = PermissionStateToString(state);
                                std::wstring reply = L"{\"PermissionSetting\": \"" +
                                                     kind_string + L", " + origin.get() +
                                                     L", " + state_string + L"\"}";
                                CHECK_FAILURE(sender->PostWebMessageAsJson(reply.c_str()));
                            }
                            return S_OK;
                        })
                        .Get()));
                return S_OK;
            })
            .Get(),
        &m_DOMContentLoadedToken));

SetPermissionState

Sets permission state for the given permission kind and origin asynchronously.

public HRESULT SetPermissionState(COREWEBVIEW2_PERMISSION_KIND PermissionKind, LPCWSTR origin, COREWEBVIEW2_PERMISSION_STATE State, ICoreWebView2SetPermissionStateCompletedHandler * handler)

The change persists across sessions until it is changed by another call to SetPermissionState, or by setting the State property in PermissionRequestedEventArgs. Setting the state to COREWEBVIEW2_PERMISSION_STATE_DEFAULT will erase any state saved in the profile and restore the default behavior. The origin should have a valid scheme and host (e.g. "https://www.example.com"), otherwise the method fails with E_INVALIDARG. Additional URI parts like path and fragment are ignored. For example, "https://wwww.example.com/app1/index.html/" is treated the same as "https://wwww.example.com". See the MDN origin definition for more details.

// The app's permission management page can provide a way for the end user to
// change permissions. For example, a button on the page can trigger a dialog,
// where the user specifies the desired permission kind, origin, and state.
void ScenarioPermissionManagement::ShowSetPermissionDialog()
{
    PermissionDialog dialog(m_appWindow->GetMainWindow(), permissionKinds, permissionStates);
    if (dialog.confirmed && m_webViewProfile4)
    {
        // Example: m_webViewProfile4->SetPermissionState(
        //    COREWEBVIEW2_PERMISSION_KIND_GEOLOCATION,
        //    L"https://example.com",
        //    COREWEBVIEW2_PERMISSION_STATE_DENY
        //    SetPermissionStateCallback);
        CHECK_FAILURE(m_webViewProfile4->SetPermissionState(
            dialog.kind, dialog.origin.c_str(), dialog.state,
            Callback<ICoreWebView2SetPermissionStateCompletedHandler>(
                [this](HRESULT error) -> HRESULT
                {
                    m_webView->Reload();
                    return S_OK;
                })
                .Get()));
    }
}