Add fixed height option to textbox block editor; document in config-defaults

(Part of workaround for bug #530656)
Signed-off-by: Richard Mansfield <richard.mansfield@catalyst.net.nz>

htdocs/blocktype/textbox/lib.php

@@ -72,13 +72,16 @@ class PluginBlocktypeTextbox extends SystemBlocktype {
 
     public static function instance_config_form($instance) {
         $configdata = $instance->get('configdata');
-        $h = param_integer('cfheight', 0);
+        if (!$height = get_config('blockeditorheight')) {
+            $cfheight = param_integer('cfheight', 0);
+            $height = $cfheight ? $cfheight * 0.7 : 150;
+        }
         return array(
             'text' => array(
                 'type' => 'wysiwyg',
                 'title' => get_string('blockcontent', 'blocktype.textbox'),
                 'width' => '100%',
-                'height' => ($h ? $h * 0.7 : 150) . 'px',
+                'height' => $height . 'px',
                 'defaultvalue' => isset($configdata['text']) ? $configdata['text'] : '',
             ),
         );

htdocs/lib/config-defaults.php

@@ -225,3 +225,15 @@ $cfg->leapovermnetloglevel = 0;
 // base URL of avatar server (with the trailing slash)
 // This should normally be set to http://www.gravatar.com/avatar/
 //$cfg->remoteavatarbaseurl = 'http://www.gravatar.com/avatar/';
+
+// Options for width/height of wysiwyg editor in block configuration
+// forms.  Workaround for current lack of tinymce fullscreen button.
+//
+// Make the block config form expand to the full width of browser window
+// whenever it contains a tinymce (also increases editor height in
+// textbox blocktype):
+// $cfg->blockeditormaxwidth = true;
+//
+// Set a fixed height in pixels for the tinymce editor (currently only
+// affects the textbox blocktype):
+// $cfg->blockeditorheight = 550;