<tal:comment replace="nothing">
  This page is called by a XmlHttpRequest object. It requires parameters "page" and "macro":
  they are used to call the macro that will render the HTML chunk to be returned to the browser.
  It also requires parameters "objectUid", which is the UID of the related object. The object will
  be available to the macro as "contextObj".
  It can also have a parameter "action", that refers to a method that will be triggered on
  contextObj before returning the result of the macro to the browser.
</tal:comment>
<tal:ajax define="page request/page;
                  macro request/macro;
                  macroPath python: 'here/%s/macros/%s' % (page, macro);
                  contextObj python: context.uid_catalog(UID=request['objectUid'])[0].getObject();
                  action request/action|nothing;
                  response request/RESPONSE;
                  member context/portal_membership/getAuthenticatedMember;
                  portal context/portal_url/getPortalObject;
                  portal_url context/portal_url/getPortalPath;
                  dummy python:response.setHeader('Content-Type','text/html;;charset=utf-8');
                  dummy2 python:response.setHeader('Expires', 'Mon, 11 Dec 1975 12:05:05 GMT');
                  dummy3 python:response.setHeader('CacheControl', 'no-cache')">
  <tal:executeAction condition="action">
    <tal:do define="dummy python: contextObj.getAppyAttribute('on'+action)()" omit-tag=""/>
  </tal:executeAction>
  <metal:callMacro use-macro="python: context.get(page).macros.get(macro)"/>
</tal:ajax>