Add a note about the "download" attribute for anchors

[GM_direct_download_links.git] / direct_download_links.user.js

diff --git a/direct_download_links.user.js b/direct_download_links.user.js
index d430887..e1f17f3 100644 (file)
--- a/direct_download_links.user.js
+++ b/direct_download_links.user.js
@@ -1,6 +1,6 @@
 // direct_download_links - Add direct download links
-// version 0.2
-// 2011-11-14
+// version 0.3
+// 2011-12-23
 // Copyright (C) 2011  Antonio Ospite <ospite@studenti.unina.it>
 // Released under the GPL license
 // http://www.gnu.org/copyleft/gpl.html
@@ -28,10 +28,9 @@
 // @include        http://trovacinema.repubblica.it/*
 // @include        http://www.kataweb.it/tvzap/*
 // @include        http://www.rai.tv/*
+// @include        http://soundcloud.com/*
 // ==/UserScript==
 //
-// NOTE, for rai.tv to work you need to install a script like:
-// http://git.ao2.it/smooth-dl.git/blob_plain/HEAD:/scripts/SilverSpoof.user.js
 
 /*
  * TODO:
@@ -40,6 +39,8 @@
  *    the regexp starting from a glob line.
  *  - use xpath instead of regexp like in http://a32.me/2009/11/greasemonkey/
  *  - use jquery, like shown in http://a32.me/2009/11/greasemonkey/
+ *  - Support the "download" attribute for anchors:
+ *    http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#downloading-resources
  */
 
 /* Fields supported by the "site" object.
@@ -53,6 +54,12 @@
  *
  *
  * Optional fields:
+ *
+ *   initCommand: a function called before the regExp is matched, this can
+ *                be useful in cases when some action needs to be done in
+ *                order to make the element containing the regExp be actually
+ *                rendered. It must accept  a 'site' parameter.
+ *
  *   onEvent: used to delay the urlRegexp matching to a certain event like
  *            'DOMNodeInserted' useful when the URL is added by some javascript
  *            library. It has two fields:
@@ -95,12 +102,23 @@ var supported_sites = [
   },
   {
     locationRegexp: /^http:\/\/www\.rai\.tv\/.*$/,
+      initCommand: function(site) {
+        unsafeWindow.Silverlight.isInstalled = function(version) {
+          return true;
+        };
+    },
     urlContainer: 'Player',
     urlRegexp: /mediaUri=(http:\/\/[^,]*)/,
     onEvent: { evt: 'DOMNodeInserted', targetElement: 'object' },
     processURL: _rai_get_actual_url,
     linkDest: 'Player',
   },
+  {
+    locationRegexp: /^http:\/\/soundcloud.com\/.*$/,
+    urlContainer: 'main-content-inner',
+    urlRegexp: /"streamUrl":"([^"]*)"/,
+    linkDest: 'main-content-inner',
+  },
 ];
 
 /* Apply different rules to different sites */
@@ -109,6 +127,9 @@ for (i = 0; i < supported_sites.length; i++) {
 
   var result = window.location.href.match(site.locationRegexp);
   if (result) {
+    if (site.initCommand) {
+      site.initCommand(site);
+    }
     direct_download_link_add(window.location.href, site);
   }
 }
@@ -140,6 +161,7 @@ function direct_download_link_add(pageURL, site) {
       }
      _get_URL(site, element);
     }, false);
+    return;
   }
 
   _get_URL(site, element);
@@ -168,8 +190,8 @@ function _get_URL(site, element) {
     return;
   }
 
-  var evt = document.createEvent('Event');  
-  evt.initEvent('UrlFetched', true, true);  
+  var evt = document.createEvent('Event');
+  evt.initEvent('UrlFetched', true, true);
   evt.site = site;
   evt.URL = URL;
   document.dispatchEvent(evt);
@@ -185,16 +207,25 @@ function _add_link(e) {
     return;
   }
 
-  var download_link = document.createElement('a');
-  download_link.textContent = 'Direct Link';
-  download_link.setAttribute('href', URL);
-  var style = 'background-color: white; color: blue;';
-  style += ' border: 2px solid red;'
-  style += ' float: right; font-size: large;';
-  style += ' padding: .5em; margin: 1em;'
-  download_link.setAttribute('style', style);
+  // Check if we added the link already, if so just update the href attribute.
+  // This is useful when _get_URL() is called on async events.
+  var download_link = document.getElementById('GM_direct_downaload_link');
+  if (download_link) {
+    download_link.setAttribute('href', URL);
+  } else {
+    download_link = document.createElement('a');
+    download_link.textContent = 'Direct Link';
+    download_link.setAttribute('id', 'GM_direct_downaload_link');
+    download_link.setAttribute('href', URL);
+    var style = 'background-color: white; color: blue;';
+    style += ' border: 2px solid red;'
+    style += ' float: right; font-size: large;';
+    style += ' padding: .5em; margin: 1em;'
+    style += ' position: relative; z-index: 1000;'
+    download_link.setAttribute('style', style);
 
-  destination.insertBefore(download_link, destination.firstChild);
+    destination.insertBefore(download_link, destination.firstChild);
+  }
 }
 
 function DDL_log(message) {
@@ -207,6 +238,17 @@ function DDL_log(message) {
 }
 
 function _rai_get_actual_url(site, URL) {
+
+  // SmoothStreaming manifest files get added without processing, for now:
+  if (URL.match(/.*\.csm$/)) {
+    var evt = document.createEvent('Event');
+    evt.initEvent('UrlFetched', true, true);
+    evt.site = site;
+    evt.URL = URL;
+    document.dispatchEvent(evt);
+    return;
+  }
+
   // http://www.neaveru.com/wordpress/index.php/2008/05/09/greasemonkey-bug-domnodeinserted-event-doesnt-allow-gm_xmlhttprequest/
   setTimeout( function() {
     GM_xmlhttpRequest({
@@ -225,8 +267,8 @@ function _rai_get_actual_url(site, URL) {
         if (ref.length > 0) {
           href = ref[0].getAttribute('HREF');;
 
-          var evt = document.createEvent('Event');  
-          evt.initEvent('UrlFetched', true, true);  
+          var evt = document.createEvent('Event');
+          evt.initEvent('UrlFetched', true, true);
           evt.site = site;
           evt.URL = href;
           document.dispatchEvent(evt);