Fix: Using "View Source" from Browser Console

Issue #121

application/palemoon/base/content/browser.js

@@ -2017,49 +2017,43 @@ function readFromClipboard()
   return url;
 }
 
-function BrowserViewSourceOfDocument(aDocument)
+function BrowserViewSourceOfDocument(aArgsOrDocument)
 {
-  var pageCookie;
-  var webNav;
+  let args;
 
-  // Get the document charset
-  var docCharset = "charset=" + aDocument.characterSet;
+  if (aArgsOrDocument instanceof Document) {
+    let doc = aArgsOrDocument;
 
-  // Get the nsIWebNavigation associated with the document
-  try {
-      var win;
-      var ifRequestor;
+    let requestor = doc.defaultView
+                       .QueryInterface(Ci.nsIInterfaceRequestor);
+    let browser = requestor.getInterface(Ci.nsIWebNavigation)
+                           .QueryInterface(Ci.nsIDocShell)
+                           .chromeEventHandler;
+    let outerWindowID = requestor.getInterface(Ci.nsIDOMWindowUtils)
+                                 .outerWindowID;
+    let URL = browser.currentURI.spec;
+    args = { browser, outerWindowID, URL };
+  } else {
+    args = aArgsOrDocument;
+  }
 
-      // Get the DOMWindow for the requested document.  If the DOMWindow
-      // cannot be found, then just use the content window...
-      //
-      // XXX:  This is a bit of a hack...
-      win = aDocument.defaultView;
-      if (win == window) {
-        win = content;
+  let viewInternal = () => {
+    top.gViewSourceUtils.viewSource(args);
+  }
+
+  // Check if external view source is enabled.  If so, try it.  If it fails,
+  // fallback to internal view source.
+  if (Services.prefs.getBoolPref("view_source.editor.external")) {
+    top.gViewSourceUtils
+       .openInExternalEditor(args, null, null, null, result => {
+      if (!result) {
+        viewInternal();
       }
-      ifRequestor = win.QueryInterface(Components.interfaces.nsIInterfaceRequestor);
-
-      webNav = ifRequestor.getInterface(nsIWebNavigation);
-  } catch(err) {
-      // If nsIWebNavigation cannot be found, just get the one for the whole
-      // window...
-      webNav = gBrowser.webNavigation;
+    });
+  } else {
+    // Display using internal view source
+    viewInternal();
   }
-  //
-  // Get the 'PageDescriptor' for the current document. This allows the
-  // view-source to access the cached copy of the content rather than
-  // refetching it from the network...
-  //
-  try{
-    var PageLoader = webNav.QueryInterface(Components.interfaces.nsIWebPageDescriptor);
-
-    pageCookie = PageLoader.currentDescriptor;
-  } catch(err) {
-    // If no page descriptor is available, just use the view-source URL...
-  }
-
-  top.gViewSourceUtils.viewSource(webNav.currentURI.spec, pageCookie, aDocument);
 }
 
 // doc - document to use for source, or null for this window's document