First cut at a youtube/googlevideo blocktype. TODO items in lib.php

htdocs/blocktype/externalvideo/lang/en.utf8/blocktype.externalvideo.php

+<?php
+/**
+ * This program is part of Mahara
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * @package    mahara
+ * @subpackage blocktype-externalvideo
+ * @author     Nigel McNie <nigel@catalyst.net.nz>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+defined('INTERNAL') || die();
+
+$string['title'] = 'External Video';
+$string['description'] = 'Embed Youtube/Google videos';
+
+?>

htdocs/blocktype/externalvideo/lib.php

+<?php
+/**
+ * This program is part of Mahara
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * @package    mahara
+ * @subpackage blocktype-externalvideo
+ * @author     Nigel McNie <nigel@catalyst.net.nz>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+defined('INTERNAL') || die();
+
+/**
+ * todos before this block type can be considered complete
+ *  - document this class and methods
+ *  - correct category
+ *  - more video url sources, and good default behaviour
+ *  - block in configure mode when created
+ *  - block title editable
+ *  - i18n
+ *  - minvalue/maxvalue rules
+ */
+class PluginBlocktypeExternalvideo extends SystemBlocktype {
+
+    public static function get_title() {
+        return get_string('title', 'blocktype.externalvideo');
+    }
+
+    public static function get_description() {
+        return get_string('description', 'blocktype.externalvideo');
+    }
+
+    public static function get_categories() {
+        return array('file');
+    }
+
+    public static function render_instance(BlockInstance $instance) {
+        $configdata = $instance->get('configdata');
+        $result = '';
+        $url    = hsc(self::make_video_url($configdata['videoid']));
+        $width  = (!empty($configdata['width'])) ? hsc($configdata['width']) : '100%';
+        $height = (!empty($configdata['height'])) ? hsc($configdata['height']) : '';
+
+        if (isset($configdata['videoid'])) {
+            $result  = '<div class="center">';
+            $result .= '<object width="' . $width . '" height="' . $height . '">';
+            $result .= '<param name="movie" value="' . $url . '"></param>';
+            $result .= '<param name="wmode" value="transparent"></param>';
+            $result .= '<param name="allowscriptaccess" value="never"></param>';
+            $result .= '<embed src="' . $url . '" ';
+            $result .= 'type="application/x-shockwave-flash" wmode="transparent" width="' . $width . '" ';
+            $result .= 'height="' . $height . '" allowscriptaccess="never"></embed></object>';
+            $result .= '</div>';
+        }
+
+        return $result;
+    }
+
+    public static function has_instance_config() {
+        return true;
+    }
+
+    public static function instance_config_form($instance) {
+        $configdata = $instance->get('configdata');
+        return array(
+            'videoid' => array(
+                'type'  => 'text',
+                'title' => 'Video URL',
+                'description' => 'Paste the URL of the page where the video is located',
+                'width' => '90%',
+                'defaultvalue' => $configdata['videoid'],
+                'rules' => array(
+                    'required' => true
+                ),
+            ),
+            'width' => array(
+                'type' => 'text',
+                'title' => 'Width',
+                'size' => 3,
+                //'rules' => array(
+                //    'minvalue' => 100,
+                //    'maxvalue' => 800,
+                //),
+                'defaultvalue' => (isset($configdata['width'])) ? $configdata['width'] : '',
+            ),
+            'height' => array(
+                'type' => 'text',
+                'title' => 'Height',
+                'size' => 3,
+                //'rules' => array(
+                //    'minvalue' => 100,
+                //    'maxvalue' => 800,
+                //),
+                'defaultvalue' => (isset($configdata['height'])) ? $configdata['height'] : '',
+            ),
+        );
+    }
+
+    //public static function instance_config_save($values) {
+    //    return $values;
+    //}
+
+    private static function make_video_url($url) {
+        static $embedsources = array(
+            array(
+                'match' => '#.*youtube\.com.*v=([a-zA-Z0-9]+).*#',
+                'url'   => 'http://www.youtube.com/v/$1'
+            ),
+            array(
+                'match' => '#.*video.google.com.*docid=(\-?[0-9]+).*#',
+                'url'   => 'http://video.google.com/googleplayer.swf?docId=$1',
+            )
+        );
+
+        foreach ($embedsources as $source) {
+            if (preg_match($source['match'], $url)) {
+                return preg_replace($source['match'], $source['url'], $url);
+            }
+        }
+        // TODO handle failure case
+    }
+}
+
+?>

htdocs/blocktype/externalvideo/version.php

+<?php
+/**
+ * This program is part of Mahara
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * @package    mahara
+ * @subpackage blocktype-externalvideo
+ * @author     Nigel McNie <nigel@catalyst.net.nz>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+defined('INTERNAL') || die();
+
+$config = new StdClass;
+$config->version = 2007100800;
+$config->release = '0.9';
+
+?>