1 files changed, 117 insertions, 0 deletions
diff --git a/toolkit/mozapps/downloads/content/DownloadProgressListener.js b/toolkit/mozapps/downloads/content/DownloadProgressListener.js
new file mode 100644
index 000000000..ab349baf2
--- /dev/null
+++ b/toolkit/mozapps/downloads/content/DownloadProgressListener.js
@@ -0,0 +1,117 @@
+// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+
+/* 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/. */
+
+/**
+ * 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([Ci.nsIDownloadProgressListener]),
+
+  // nsIDownloadProgressListener
+
+  onDownloadStateChange: function dlPL_onDownloadStateChange(aState, aDownload)
+  {
+    // Update window title in-case we don't get all progress notifications
+    onUpdateProgress();
+
+    let dl;
+    let state = aDownload.state;
+    switch (state) {
+      case nsIDM.DOWNLOAD_QUEUED:
+        prependList(aDownload);
+        break;
+
+      case nsIDM.DOWNLOAD_BLOCKED_POLICY:
+        prependList(aDownload);
+        // Should fall through, this is a final state but DOWNLOAD_QUEUED
+        // is skipped. See nsDownloadManager::AddDownload.
+      case nsIDM.DOWNLOAD_FAILED:
+      case nsIDM.DOWNLOAD_CANCELED:
+      case nsIDM.DOWNLOAD_BLOCKED_PARENTAL:
+      case nsIDM.DOWNLOAD_DIRTY:
+      case nsIDM.DOWNLOAD_FINISHED:
+        downloadCompleted(aDownload);
+        if (state == nsIDM.DOWNLOAD_FINISHED)
+          autoRemoveAndClose(aDownload);
+        break;
+      case nsIDM.DOWNLOAD_DOWNLOADING: {
+        dl = getDownload(aDownload.id);
+
+        // At this point, we know if we are an indeterminate download or not
+        dl.setAttribute("progressmode", aDownload.percentComplete == -1 ?
+                                        "undetermined" : "normal");
+
+        // As well as knowing the referrer
+        let referrer = aDownload.referrer;
+        if (referrer)
+          dl.setAttribute("referrer", referrer.spec);
+
+        break;
+      }
+    }
+
+    // autoRemoveAndClose could have already closed our window...
+    try {
+      if (!dl)
+        dl = getDownload(aDownload.id);
+
+      // Update to the new state
+      dl.setAttribute("state", state);
+
+      // Update ui text values after switching states
+      updateTime(dl);
+      updateStatus(dl);
+      updateButtons(dl);
+    } catch (e) { }
+  },
+
+  onProgressChange: function dlPL_onProgressChange(aWebProgress, aRequest,
+                                                   aCurSelfProgress,
+                                                   aMaxSelfProgress,
+                                                   aCurTotalProgress,
+                                                   aMaxTotalProgress, aDownload)
+  {
+    var download = getDownload(aDownload.id);
+
+    // Update this download's progressmeter
+    if (aDownload.percentComplete != -1) {
+      download.setAttribute("progress", aDownload.percentComplete);
+
+      // Dispatch ValueChange for a11y
+      let event = document.createEvent("Events");
+      event.initEvent("ValueChange", true, true);
+      document.getAnonymousElementByAttribute(download, "anonid", "progressmeter")
+              .dispatchEvent(event);
+    }
+
+    // Update the progress so the status can be correctly updated
+    download.setAttribute("currBytes", aDownload.amountTransferred);
+    download.setAttribute("maxBytes", aDownload.size);
+
+    // Update the rest of the UI (bytes transferred, bytes total, download rate,
+    // time remaining).
+    updateStatus(download, aDownload);
+
+    // Update window title
+    onUpdateProgress();
+  },
+
+  onStateChange: function(aWebProgress, aRequest, aState, aStatus, aDownload)
+  {
+  },
+
+  onSecurityChange: function(aWebProgress, aRequest, aState, aDownload)
+  {
+  }
+};