1 files changed, 58 insertions, 0 deletions
diff --git a/xpfe/components/downloads/content/DownloadProgressListener.js b/xpfe/components/downloads/content/DownloadProgressListener.js
new file mode 100644
index 000000000..5341b44d8
--- /dev/null
+++ b/xpfe/components/downloads/content/DownloadProgressListener.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+/**
+ * DownloadProgressListener "class" is used to help update download items shown
+ * in the Download Manager UI such as displaying amount transferred, transfer
+ * rate, and time left for each download.
+ *
+ * This class implements the nsIDownloadProgressListener interface.
+ */
+function DownloadProgressListener() {}
+
+DownloadProgressListener.prototype = {
+  //////////////////////////////////////////////////////////////////////////////
+  //// nsISupports
+
+  QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsIDownloadProgressListener]),
+
+  //////////////////////////////////////////////////////////////////////////////
+  //// nsIDownloadProgressListener
+
+  onDownloadStateChange: function(aState, aDownload) {
+    // Update window title in-case we don't get all progress notifications
+    onUpdateProgress();
+
+    switch (aDownload.state) {
+      case nsIDownloadManager.DOWNLOAD_QUEUED:
+        gDownloadTreeView.addDownload(aDownload);
+        break;
+
+      case nsIDownloadManager.DOWNLOAD_BLOCKED_POLICY:
+        gDownloadTreeView.addDownload(aDownload);
+        // Should fall through, this is a final state but DOWNLOAD_QUEUED
+        // is skipped. See nsDownloadManager::AddDownload.
+      default:
+        gDownloadTreeView.updateDownload(aDownload);
+        break;
+    }
+  },
+
+  onProgressChange: function(aWebProgress, aRequest,
+                             aCurSelfProgress, aMaxSelfProgress,
+                             aCurTotalProgress, aMaxTotalProgress, aDownload) {
+    gDownloadTreeView.updateDownload(aDownload);
+
+    // Update window title
+    onUpdateProgress();
+  },
+
+  onStateChange: function(aWebProgress, aRequest, aState, aStatus, aDownload) {
+  },
+
+  onSecurityChange: function(aWebProgress, aRequest, aState, aDownload) {
+  }
+};