Merge pull request #3 from craftwar/nightbot

Add NightBot support and improve performance

js/global.js

@@ -125,6 +125,8 @@ function disableExtension() {
     });
     chrome.tabs.onUpdated.removeListener(sendMessage);
     chrome.webRequest.onBeforeRequest.removeListener(processRequest);
+//    for (tabIds)
+//    chrome.tabs.sendMessage(tabId, {url: ""});
     tabIds.clear();
 }
 

js/youtube_audio.js

@@ -1,35 +1,40 @@
-function makeSetAudioURL(videoElement, url) {
-    function setAudioURL() {
-        if (videoElement.src  != url) {
-            videoElement.pause();
-            videoElement.src = url;
-            videoElement.currentTime = 0;
-            videoElement.play();
-        }
+var oldUrl;
+var makeSetAudioURL = function(videoElement, url) {
+    if (oldUrl === undefined) {
+        oldUrl = videoElement.src;
+    }
+    if (videoElement.src  != url) {
+        videoElement.pause();
+        videoElement.src = url;
+        videoElement.currentTime = 0;
+        videoElement.play();
     }
-    setAudioURL();
-    return setAudioURL;
-}
+};
 
 chrome.runtime.onMessage.addListener(
     function (request, sender, sendResponse) {
-        var url = request.url;
-        var videoElements = document.getElementsByTagName('video');
-        var videoElement = videoElements[0];
+        let url = request.url;
+        let videoElement = document.getElementsByTagName('video')[0];
         videoElement.onloadeddata = makeSetAudioURL(videoElement, url);
-        if (document.getElementsByClassName('audio_only_div').length == 0) {
-            var extensionAlert = document.createElement('div');
+        let audioOnlyDivs = document.getElementsByClassName('audio_only_div');
+        if (audioOnlyDivs.length == 0) {
+            let extensionAlert = document.createElement('div');
             extensionAlert.className = 'audio_only_div';
 
-            var alertText = document.createElement('p');
+            let alertText = document.createElement('p');
             alertText.className = 'alert_text';
             alertText.innerHTML = 'Youtube Audio Extension is running. It disables the video stream and uses only the audio stream' +
                 ' which saves battery life and bandwidth / data when you just want to listen to just songs. If you want to watch' +
                 ' video also, click on the extension icon and refresh your page.';
 
             extensionAlert.appendChild(alertText);
-            var parent = videoElement.parentNode.parentNode;
+            let parent = videoElement.parentNode.parentNode;
             parent.appendChild(extensionAlert);
         }
+        else if (url == "") {
+            for(div in audioOnlyDivs) {
+                div.parentNode.removeChild(div);
+            }
+        }
     }
 );

manifest.json

@@ -25,6 +25,7 @@
   },
   "content_scripts": [
     {
+      "all_frames": true,
       "matches": [
         "*://www.youtube.com/*",
         "*://m.youtube.com/*"