Adding upstream version 20241201.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/plugins/55/mathjax/action/enable.php b/plugins/55/mathjax/action/enable.php
new file mode 100644
index 0000000..5063a5f
--- /dev/null
+++ b/plugins/55/mathjax/action/enable.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * DokuWiki Plugin mathjax (Action Component)
+ *
+ * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
+ * @author  Mark Liffiton <liffiton@gmail.com>
+ */
+
+// must be run within Dokuwiki
+if (!defined('DOKU_INC')) die();
+
+/**
+ * Add scripts via an event handler
+ */
+class action_plugin_mathjax_enable extends DokuWiki_Action_Plugin {
+
+    /**
+     * Registers our handler for the TPL_METAHEADER_OUTPUT event
+     */
+    public function register(Doku_Event_Handler $controller) {
+       $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handle_tpl_metaheader_output');
+    }
+
+    /**
+     * Add <script> blocks to the headers:
+     *   - One to load MathJax and one to configure it
+     *   - Also add one block per configfile, if any are specified
+     * See https://docs.mathjax.org/en/latest/configuration.html#using-in-line-configuration-options
+     *
+     * @param Doku_Event $event
+     * @param            $param
+     */
+    public function handle_tpl_metaheader_output(Doku_Event &$event, $param) {
+        // Create main config block
+        $event->data['script'][] = array(
+			'type'    => 'text/x-mathjax-config',
+			'_data'   => $this->getConf('config'),
+		);
+
+        // Include config files, if any specified
+        $configfiles = $this->getConf('configfile');
+        $files = explode(';', $configfiles);
+        foreach ($files as $f) {
+            $f = trim($f);
+            if ($f == "" or !is_readable($f)) {
+                continue;
+            }
+            $contents = file_get_contents(DOKU_INC . $f);
+            if ($contents) {
+                $event->data['script'][] = array(
+                    'type'    => 'text/x-mathjax-config',
+                    '_data'   => "\n// " . $f . "\n" . $contents,
+                );
+            }
+        }
+
+        // Load MathJax itself
+        $event->data['script'][] = array(
+			'type'    => 'text/javascript',
+			'charset' => 'utf-8',
+			'src'     => $this->getConf('url'),
+			'_data'   => '',
+		);
+    }
+
+}
+
+// vim:ts=4:sw=4:et: