1 files changed, 56 insertions, 0 deletions
diff --git a/browser/components/downloads/content/allDownloadsViewOverlay.css b/browser/components/downloads/content/allDownloadsViewOverlay.css
new file mode 100644
index 000000000..c062ae464
--- /dev/null
+++ b/browser/components/downloads/content/allDownloadsViewOverlay.css
@@ -0,0 +1,56 @@
+/* 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/. */
+
+/**
+ * The downloads richlistbox may list thousands of items, and it turns out
+ * XBL binding attachment, and even more so detachment, is a performance hog.
+ * This hack makes sure we don't apply any binding to inactive items (inactive
+ * items are history downloads that haven't been in the visible area).
+ * We can do this because the richlistbox implementation does not interact
+ * much with the richlistitem binding.  However, this may turn out to have
+ * some side effects (see bug 828111 for the details).
+ *
+ * We might be able to do away with this workaround once bug 653881 is fixed.
+ */
+richlistitem.download {
+  -moz-binding: none;
+}
+
+richlistitem.download[active] {
+  -moz-binding: url('chrome://browser/content/downloads/download.xml#download-full-ui');
+}
+
+richlistitem.download[active]:-moz-any([state="-1"],/* Starting (initial) */
+                                       [state="0"], /* Downloading        */
+                                       [state="4"], /* Paused             */
+                                       [state="5"], /* Starting (queued)  */
+                                       [state="7"]) /* Scanning           */
+{
+  -moz-binding: url('chrome://browser/content/downloads/download.xml#download-in-progress-full-ui');
+}
+
+.download-state:not(          [state="0"]  /* Downloading        */)
+                                           .downloadPauseMenuItem,
+.download-state:not(          [state="4"]  /* Paused             */)
+                                           .downloadResumeMenuItem,
+.download-state:not(:-moz-any([state="2"], /* Failed             */
+                              [state="4"]) /* Paused             */)
+                                           .downloadCancelMenuItem,
+.download-state[state]:not(:-moz-any([state="1"], /* Finished           */
+                                     [state="2"], /* Failed             */
+                                     [state="3"], /* Canceled           */
+                                     [state="6"], /* Blocked (parental) */
+                                     [state="8"], /* Blocked (dirty)    */
+                                     [state="9"]) /* Blocked (policy)   */)
+                                           .downloadRemoveFromHistoryMenuItem,
+.download-state:not(:-moz-any([state="-1"],/* Starting (initial) */
+                              [state="0"], /* Downloading        */
+                              [state="1"], /* Finished           */
+                              [state="4"], /* Paused             */
+                              [state="5"]) /* Starting (queued)  */)
+                                           .downloadShowMenuItem,
+.download-state[state="7"] /* Scanning */  .downloadCommandsSeparator
+{
+  display: none;
+}