Optionally set a separate Javascript server and path

We have about 10-12 JavaScript pages per Web page. They usually
are based on the same server as the Web pages, but since they're
static files, it makes sense to offload them to a lite server that
handles static files well.

This commit lets you set a separate Javascript server and path for the
default Javascript code in StatusNet.

Squashed commit of the following:

commit 139d1622fdafe5ad00c820224416d9021efc3234
Author: Evan Prodromou <evan@status.net>
Date:   Wed Jan 27 11:30:24 2010 -0500

    modules that call htmloutputter::script() don't prescribe js/ path

commit c6ca3174af73efed55eaed5ff1e2a3bdc77d2d87
Author: Evan Prodromou <evan@status.net>
Date:   Wed Jan 27 11:28:07 2010 -0500

    configurable server and path for javascript files

4 files changed, 40 insertions, 11 deletions

diff --git a/lib/action.php b/lib/action.php
index 3ffc452de..cc4f4aad0 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -246,18 +246,18 @@ class Action extends HTMLOutputter // lawsuit
     {
         if (Event::handle('StartShowScripts', array($this))) {
             if (Event::handle('StartShowJQueryScripts', array($this))) {
-                $this->script('js/jquery.min.js');
-                $this->script('js/jquery.form.js');
-                $this->script('js/jquery.cookie.js');
-                $this->script('js/json2.js');
-                $this->script('js/jquery.joverlay.min.js');
+                $this->script('jquery.min.js');
+                $this->script('jquery.form.js');
+                $this->script('jquery.cookie.js');
+                $this->script('json2.js');
+                $this->script('jquery.joverlay.min.js');
                 Event::handle('EndShowJQueryScripts', array($this));
             }
             if (Event::handle('StartShowStatusNetScripts', array($this)) &&
                 Event::handle('StartShowLaconicaScripts', array($this))) {
-                $this->script('js/xbImportNode.js');
-                $this->script('js/util.js');
-                $this->script('js/geometa.js');
+                $this->script('xbImportNode.js');
+                $this->script('util.js');
+                $this->script('geometa.js');
                 // Frame-busting code to avoid clickjacking attacks.
                 $this->element('script', array('type' => 'text/javascript'),
                                'if (window.top !== window.self) { window.top.location.href = window.self.location.href; }');
diff --git a/lib/default.php b/lib/default.php
index 37fb65b53..10ea34864 100644
--- a/lib/default.php
+++ b/lib/default.php
@@ -120,6 +120,9 @@ $default =
         array('server' => null,
               'dir' => null,
               'path'=> null),
+        'javascript' =>
+        array('server' => null,
+              'path'=> null),
         'throttle' =>
         array('enabled' => false, // whether to throttle edits; false by default
               'count' => 20, // number of allowed messages in timespan
diff --git a/lib/designsettings.php b/lib/designsettings.php
index 8e44c03a9..4955e9219 100644
--- a/lib/designsettings.php
+++ b/lib/designsettings.php
@@ -327,8 +327,8 @@ class DesignSettingsAction extends AccountSettingsAction
     {
         parent::showScripts();
 
-        $this->script('js/farbtastic/farbtastic.js');
-        $this->script('js/userdesign.go.js');
+        $this->script('farbtastic/farbtastic.js');
+        $this->script('userdesign.go.js');
 
         $this->autofocus('design_background-image_file');
     }
diff --git a/lib/htmloutputter.php b/lib/htmloutputter.php
index 31660ce95..317f5ea61 100644
--- a/lib/htmloutputter.php
+++ b/lib/htmloutputter.php
@@ -351,14 +351,40 @@ class HTMLOutputter extends XMLOutputter
     function script($src, $type='text/javascript')
     {
         if(Event::handle('StartScriptElement', array($this,&$src,&$type))) {
+
             $url = parse_url($src);
+
             if( empty($url['scheme']) && empty($url['host']) && empty($url['query']) && empty($url['fragment']))
             {
-                $src = common_path($src) . '?version=' . STATUSNET_VERSION;
+                $path = common_config('javascript', 'path');
+
+                if (empty($path)) {
+                    $path = common_config('site', 'path') . '/js/';
+                }
+
+                if ($path[strlen($path)-1] != '/') {
+                    $path .= '/';
+                }
+
+                if ($path[0] != '/') {
+                    $path = '/'.$path;
+                }
+
+                $server = common_config('javascript', 'server');
+
+                if (empty($server)) {
+                    $server = common_config('site', 'server');
+                }
+
+                // XXX: protocol
+
+                $src = 'http://'.$server.$path.$src . '?version=' . STATUSNET_VERSION;
             }
+
             $this->element('script', array('type' => $type,
                                                    'src' => $src),
                                    ' ');
+
             Event::handle('EndScriptElement', array($this,$src,$type));
         }
     }