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MDL-53978 core: Added callbacks for all major render stages

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This commit is contained in:
Brendan Heywood 2016-10-06 22:27:58 +11:00
parent 0f59b6dd75
commit 5ebd1fb976
1 changed files with 59 additions and 1 deletions
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60
lib/outputrenderers.php
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@ -513,9 +513,30 @@ class core_renderer extends renderer_base {
*/
public function htmlattributes() {
$return = get_html_lang(true);
$attributes = array();
if ($this->page->theme->doctype !== 'html5') {
$return .= ' xmlns="http://www.w3.org/1999/xhtml"';
$attributes['xmlns'] = 'http://www.w3.org/1999/xhtml';
}
// Give plugins an opportunity to add things like xml namespaces to the html element.
// This function should return an array of html attribute names => values.
$pluginswithfunction = get_plugins_with_function('add_htmlattributes', 'lib.php');
foreach ($pluginswithfunction as $plugins) {
foreach ($plugins as $function) {
$newattrs = $function();
unset($newattrs['dir']);
unset($newattrs['lang']);
unset($newattrs['xmlns']);
unset($newattrs['xml:lang']);
$attributes += $newattrs;
}
}
foreach ($attributes as $key => $val) {
$val = s($val);
$return .= " $key=\"$val\"";
}
return $return;
}
@ -540,6 +561,15 @@ class core_renderer extends renderer_base {
$output = '';
// Give plugins an opportunity to add any head elements. The callback
// must always return a string containing valid html head content.
$pluginswithfunction = get_plugins_with_function('before_standard_html_head', 'lib.php');
foreach ($pluginswithfunction as $plugins) {
foreach ($plugins as $function) {
$output .= $function();
}
}
// Allow a url_rewrite plugin to setup any dynamic head content.
if (isset($CFG->urlrewriteclass) && !isset($CFG->upgraderunning)) {
$class = $CFG->urlrewriteclass;
@ -628,7 +658,18 @@ class core_renderer extends renderer_base {
if ($this->page->pagelayout !== 'embedded' && !empty($CFG->additionalhtmltopofbody)) {
$output .= "\n".$CFG->additionalhtmltopofbody;
}
// Give plugins an opportunity to inject extra html content. The callback
// must always return a string containing valid html.
$pluginswithfunction = get_plugins_with_function('before_standard_top_of_body_html', 'lib.php');
foreach ($pluginswithfunction as $plugins) {
foreach ($plugins as $function) {
$output .= $function();
}
}
$output .= $this->maintenance_warning();
return $output;
}
@ -1001,6 +1042,15 @@ class core_renderer extends renderer_base {
public function header() {
global $USER, $CFG, $SESSION;
// Give plugins an opportunity touch things before the http headers are sent
// such as adding additional headers. The return value is ignored.
$pluginswithfunction = get_plugins_with_function('before_http_headers', 'lib.php');
foreach ($pluginswithfunction as $plugins) {
foreach ($plugins as $function) {
$function();
}
}
if (\core\session\manager::is_loggedinas()) {
$this->page->add_body_class('userloggedinas');
}
@ -1112,6 +1162,14 @@ class core_renderer extends renderer_base {
public function footer() {
global $CFG, $DB, $PAGE;
// Give plugins an opportunity to touch the page before JS is finalized.
$pluginswithfunction = get_plugins_with_function('before_footer', 'lib.php');
foreach ($pluginswithfunction as $plugins) {
foreach ($plugins as $function) {
$function();
}
}
$output = $this->container_end_all(true);
$footer = $this->opencontainers->pop('header/footer');