Bug 863063: quitting private browsing mode does not delete partially downloaded files, r=mak

toolkit/components/downloads/nsDownloadManager.cpp

@@ -231,7 +231,7 @@ nsDownloadManager::RemoveAllDownloads(nsCOMArray<nsDownload>& aDownloads)
     nsRefPtr<nsDownload> dl = aDownloads[0];
 
     nsresult result = NS_OK;
-    if (dl->IsPaused() && GetQuitBehavior() != QUIT_AND_CANCEL)
+    if (!dl->mPrivate && dl->IsPaused() && GetQuitBehavior() != QUIT_AND_CANCEL)
       aDownloads.RemoveObject(dl);
     else
       result = dl->Cancel();
@@ -2418,7 +2418,6 @@ nsDownloadManager::Observe(nsISupports *aSubject,
     // Upon leaving private browsing mode, cancel all private downloads,
     // remove all trace of them, and then blow away the private database
     // and recreate a blank one.
-    PauseAllDownloads(mCurrentPrivateDownloads, true);
     RemoveAllDownloads(mCurrentPrivateDownloads);
     InitPrivateDB();
   } else if (strcmp(aTopic, "last-pb-context-exiting") == 0) {

toolkit/components/downloads/test/unit/test_privatebrowsing_cancel.js

@@ -4,7 +4,7 @@
 
 /**
   Make sure that the download manager service is given a chance to cancel the
-  private browisng mode transition.
+  private browsing mode transition.
 **/
 
 const Cm = Components.manager;
@@ -78,9 +78,9 @@ function trigger_pb_cleanup(expected)
 
 function run_test() {
   function finishTest() {
-    // Cancel Download-E
-    dlF.cancel();
-    dlF.remove();
+    // Cancel Download-G
+    dlG.cancel();
+    dlG.remove();
     dm.cleanUp();
     dm.cleanUpPrivate();
     do_check_eq(dm.activeDownloadCount, 0);
@@ -161,11 +161,11 @@ function run_test() {
             trigger_pb_cleanup(false);
             do_check_true(promptService.wasCalled());
             do_check_eq(dm.activePrivateDownloadCount, 0);
-            do_check_eq(dlE.state, dm.DOWNLOAD_PAUSED);
+            do_check_eq(dlE.state, dm.DOWNLOAD_CANCELED);
 
             // Create Download-F
             dlF = addDownload({
-              isPrivate: false,
+              isPrivate: true,
               targetFile: fileF,
               sourceURI: downloadFSource,
               downloadName: downloadFName
@@ -173,17 +173,42 @@ function run_test() {
 
             // Wait for Download-F to start
           } else if (aDownload.targetFile.equals(dlF.targetFile)) {
-            // Sanity check: Download-F must not be resumable
-            do_check_false(dlF.resumable);
+            // Sanity check: Download-F must be resumable
+            do_check_true(dlF.resumable);
+            dlF.pause();
+
+          } else if (aDownload.targetFile.equals(dlG.targetFile)) {
+            // Sanity check: Download-G must not be resumable
+            do_check_false(dlG.resumable);
 
             promptService.sayCancel();
             trigger_pb_cleanup(false);
             do_check_false(promptService.wasCalled());
             do_check_eq(dm.activeDownloadCount, 1);
-            do_check_eq(dlF.state, dm.DOWNLOAD_DOWNLOADING);
+            do_check_eq(dlG.state, dm.DOWNLOAD_DOWNLOADING);
             finishTest();
           }
           break;
+
+        case dm.DOWNLOAD_PAUSED:
+          if (aDownload.targetFile.equals(dlF.targetFile)) {
+            promptService.sayProceed();
+            trigger_pb_cleanup(false);
+            do_check_true(promptService.wasCalled());
+            do_check_eq(dm.activePrivateDownloadCount, 0);
+            do_check_eq(dlF.state, dm.DOWNLOAD_CANCELED);
+
+            // Create Download-G
+            dlG = addDownload({
+              isPrivate: false,
+              targetFile: fileG,
+              sourceURI: downloadGSource,
+              downloadName: downloadGName
+            });
+
+            // Wait for Download-G to start
+          }
+          break;
       }
     },
     onStateChange: function(a, b, c, d, e) { },
@@ -204,10 +229,15 @@ function run_test() {
   const downloadEName = "download-E";
 
   // properties of Download-F
-  const downloadFSource = "http://localhost:4444/noresume";
+  const downloadFSource = "http://localhost:4444/file/head_download_manager.js";
   const downloadFDest = "download-file-F";
   const downloadFName = "download-F";
 
+  // properties of Download-G
+  const downloadGSource = "http://localhost:4444/noresume";
+  const downloadGDest = "download-file-G";
+  const downloadGName = "download-G";
+
   // Create all target files
   let fileD = tmpDir.clone();
   fileD.append(downloadDDest);
@@ -218,6 +248,9 @@ function run_test() {
   let fileF = tmpDir.clone();
   fileF.append(downloadFDest);
   fileF.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
+  let fileG = tmpDir.clone();
+  fileG.append(downloadGDest);
+  fileG.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
 
   // Create Download-D
   let dlD = addDownload({
@@ -227,7 +260,7 @@ function run_test() {
     downloadName: downloadDName
   });
 
-  let dlE, dlF;
+  let dlE, dlF, dlG;
 
   // wait for Download-D to start
 }