One of our plugins requires the widget rending pipeline, but we remove the headers and footers of the page so just the content is displayed. This was done previously using a IHttpFilter and in .net10 we would use some middleware. Can you think of a solution that would work in the new platform?
No, it does not. This is an example of a page doing just as I described. It has no header or footer region for widgets to render in.
As for other pages, it is not supported to alter the layouts or content of platform defined pages outside of what you can do in the UI, this is why there is no access to the default definitions, same as default widgets
There's a little more to this than I remembered. The default theme defines a stylesheet called "oauth.css" which is configured to render for authorization requests, which is a special case option available to theme file attachments. And in that stylesheet, it hides the header and footer (among other things). Is this ideal? No. Could a similar approach be adapted to hiding regions on other pages? Yes.
Similarly, the styling that that hides these elements could be applied dynamically on the client side too for cases where it needs to be programmatic.
.
Here's its stylesheet from the social theme, unmodified:
/*
When customizing this theme, it is recommended to use existing theme configuration or add override CSS/LESS
files instead of editing platform-defined CSS/LESS. This will make future upgrades simpler.
Direct edits to platform-defined CSS/LESS is not prevented, but will require manual diff/merging when upgrading
to new versions of this theme.
*/
img { max-width: 100%; }
.footer-fragments .layout,
.page-editing,
.page-tabs,
.admin-bar .navigation-list,
.admin-bar fieldset.field-list,
.poweredby-wrapper,
.header-fragments-header,
.header-fragments-footer,
.footer-fragments,
.footer-fragments-header,
.footer-fragments-footer,
.admin-bar,
.admin-bar-header,
.admin-bar-footer
{ display: none; }
.header-fragments { min-width: 0; }
.header-fragments .content-fragment { display: none; }
.header-fragments .content-fragment.html-content { display: block; }
.header-fragments .content-fragment.html-content .user-defined-markup > div, .header-fragments .content-fragment.html-content .user-defined-markup > p { display: none; }
.header-fragments .content-fragment.html-content .user-defined-markup .site-banner-header,
.header-fragments .content-fragment.html-content .user-defined-markup .site-banner,
.header-fragments .content-fragment.html-content .user-defined-markup .site-banner-footer
{ display: block; padding: 0; margin: 0; }
.header-fragments .content-fragment.html-content .user-defined-markup .site-banner { padding: 10px 0 0 10px; width: 280px; margin: 0 auto; }
.header-fragments .layout, .content-fragment-page .layout { width: auto !important; min-width: 0 !important; max-width: 450px !important; margin: 0 auto; background: none; }
.content-fragment-page .layout-header { display: none; }
.layout-content.content-left-sidebar-right .layout-region.right-sidebar,
.layout-content.sidebar-left-content-right .layout-region.left-sidebar,
.layout-content.sidebar-left-content-center-sidebar-right .layout-region.left-sidebar,
.layout-content.sidebar-left-content-center-sidebar-right .layout-region.right-sidebar,
.layout-content.content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-left,
.layout-content.content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-right,
.layout-content.content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.right-sidebar,
.layout-content.header-top-content-left-sidebar-right .layout-region.right-sidebar,
.layout-content.header-top-sidebar-left-content-right .layout-region.left-sidebar,
.layout-content.header-top-sidebar-left-content-center-sidebar-right .layout-region.left-sidebar,
.layout-content.header-top-sidebar-left-content-center-sidebar-right .layout-region.right-sidebar,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-left,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-right,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.right-sidebar,
.layout-content.header-top-split-content .layout-region.right-sidebar,
.layout-content.header-top-content-left-sidebar-right-footer .layout-region.right-sidebar,
.layout-content.header-top-sidebar-left-content-right-footer .layout-region.left-sidebar,
.layout-content.header-top-sidebar-left-content-center-sidebar-right-footer .layout-region.left-sidebar,
.layout-content.header-top-sidebar-left-content-center-sidebar-right-footer .layout-region.right-sidebar,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom-footer .layout-region.split-sidebar-left,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom-footer .layout-region.split-sidebar-right,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom-footer .layout-region.right-sidebar,
.layout-content.header-top-split-content .layout-region.right-sidebar,
.layout-content.header-top-split-content-footer .layout-region.right-sidebar,
.layout-content.split-content .layout-region.right-sidebar
{ display: none; }
.layout-content.split-content .layout-region.content,
.layout-content.header-top-split-content .layout-region.content,
.layout-content.header-top-split-content-footer .layout-region.content
{ width: auto; float: none; }
.layout-content.content-left-sidebar-right .layout-region.content .content-fragment,
.layout-content.sidebar-left-content-right .layout-region.left-sidebar .content-fragment,
.layout-content.sidebar-left-content-center-sidebar-right .layout-region.left-sidebar .content-fragment,
.layout-content.sidebar-left-content-center-sidebar-right .layout-region.content .content-fragment,
.layout-content.content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.content .content-fragment,
.layout-content.content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-left .content-fragment,
.layout-content.header-top-content-left-sidebar-right .layout-region.content .content-fragment,
.layout-content.header-top-sidebar-left-content-right .layout-region.left-sidebar .content-fragment,
.layout-content.header-top-sidebar-left-content-center-sidebar-right .layout-region.left-sidebar .content-fragment,
.layout-content.header-top-sidebar-left-content-center-sidebar-right .layout-region.content .content-fragment,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.content .content-fragment,
.layout-content.header-top-content-left-split-sidebar-right-top-single-sidebar-right-bottom .layout-region.split-sidebar-left .content-fragment
{ margin-right: 10px; }
.content-fragment.login-and-create-user .content-fragment-content .page { float: none; width: auto; }
.content-fragment.login-and-create-user h3 { display: none; }
.content-fragment.login-and-create-user .content-fragment-content .page { border-width: 0; background: none; padding: 0; }
.content-fragment.login-and-create-user .page.login h2, .content-fragment.login-and-create-user .page.link-accounts h2, .content-fragment.login-and-create-user .page.login h3, .content-fragment.login-and-create-user .page.link-accounts h3 { float: none; width: auto; margin: 0 0 10px 0; display: block; }
.content-fragment.login-and-create-user .login-options { display: none; }
.content-fragment.login-and-create-user fieldset.login, .content-fragment.login-and-create-user fieldset.collect-email, .content-fragment.login-and-create-user fieldset.link-accounts { width: auto; margin: 0; min-height: 0; }
.content-fragment.login-and-create-user fieldset.login.inactive .field-list.login { display: none; }
.content-fragment.login-and-create-user .login-providers { top: 0; left: 0; position: relative; width: auto; height: auto !important; margin: 6px 0; }
.content-fragment.login-and-create-user fieldset { background: none; border-width: 0; padding: 0; }
.content-fragment.login-and-create-user .login-providers .login-provider { width: auto; position: static; }
.content-fragment.login-and-create-user .login-providers .login-provider .login-provider-icon-wrapper { display: none; }
.content-fragment.login-and-create-user .login-providers .login-provider .login-provider-privacy p { width: auto; }
.content-fragment.login-and-create-user .login-providers .login-provider a.connect { margin: 0 0 0 10px; position: relative; top: 0; float: none; }
.content-fragment.login-and-create-user .login-providers .login-provider .login-provider-heading { float: none; margin: 0; max-width: none; }
.content-fragment.login-and-create-user fieldset .field-list-description span { display: none; }
.content-fragment.login-and-create-user fieldset.login ul { padding: 0; margin: 0; }
.content-fragment.login-and-create-user .field-item .internal-link.submit-button { float: none; margin: 0 0 0 10px; }
.content-fragment.login-and-create-user .content-fragment-content .page.join-manual, .content-fragment.login-and-create-user .content-fragment-content .page.join-manual.no-details { width: auto; padding: 0; }
.content-fragment.login-and-create-user .join-providers { padding: 0; margin: 10px 0; }
.content-fragment.login-and-create-user fieldset { display: block; }
.content-fragment.login-and-create-user fieldset.join-account.no-details, .content-fragment.login-and-create-user fieldset.join-password.no-details { width: auto; float: none; }
.content-fragment.login-and-create-user fieldset.join-password { background: none; }
.content-fragment.login-and-create-user fieldset ul.field-list { margin: 10px 0; }
.content-fragment-page.user-createuser .content-fragment, .content-fragment-page.user-forgottenpassword .content-fragment { padding: 0; }