DownloadProvider: add to support pause/resume download by manual

This feature contains below points:
1. add to pause running download by manual.
2. add to resume manually paused download by manual.
3. add to show proper contents in notification and download-list
   for manually paused status.
4. add to support download breakpoint continuing when HTTP server
   doesn't contain etag in response header. Android baseline only
   supports this when etag is not null.
5. add to show proper contents in notification and download-list
   for status of waiting-for-network.

Change-Id: I433cdee2de8b3add0248bbb0a9d02f8da4e5bb38

1 files changed, 36 insertions, 5 deletions

diff --git a/src/com/android/providers/downloads/DownloadNotifier.java b/src/com/android/providers/downloads/DownloadNotifier.java
index 3af97463..5e1b9de2 100644
--- a/src/com/android/providers/downloads/DownloadNotifier.java
+++ b/src/com/android/providers/downloads/DownloadNotifier.java
@@ -154,9 +154,25 @@ public class DownloadNotifier {
             }
             builder.setWhen(firstShown);
 
+            // Check paused status about these downloads. If exists, will
+            // update icon and content title/content text in notification.
+            boolean hasPausedStatus = false;
+            int pausedStatus = -1;
+            for (DownloadInfo info : cluster) {
+                if (isPausedStatus(info.mStatus)) {
+                    hasPausedStatus = true;
+                    pausedStatus = info.mStatus;
+                    break;
+                }
+            }
+
             // Show relevant icon
             if (type == TYPE_ACTIVE) {
-                builder.setSmallIcon(android.R.drawable.stat_sys_download);
+                if (hasPausedStatus) {
+                    builder.setSmallIcon(R.drawable.download_pause);
+                } else {
+                    builder.setSmallIcon(android.R.drawable.stat_sys_download);
+                }
             } else if (type == TYPE_WAITING) {
                 builder.setSmallIcon(android.R.drawable.stat_sys_warning);
             } else if (type == TYPE_COMPLETE) {
@@ -264,7 +280,13 @@ public class DownloadNotifier {
                 builder.setContentTitle(getDownloadTitle(res, info));
 
                 if (type == TYPE_ACTIVE) {
-                    if (speedAsSizeText != null) {
+                    if (hasPausedStatus) {
+                        if (pausedStatus == Downloads.Impl.STATUS_PAUSED_BY_MANUAL) {
+                            builder.setContentText(res.getText(R.string.download_paused));
+                        } else {
+                            builder.setContentText(res.getText(R.string.download_queued));
+                        }
+                    } else if (speedAsSizeText != null) {
                         builder.setContentText(res.getString(R.string.download_speed_text,
                                 remainingText, speedAsSizeText));
                     }
@@ -293,8 +315,12 @@ public class DownloadNotifier {
                 }
 
                 if (type == TYPE_ACTIVE) {
-                    builder.setContentTitle(res.getQuantityString(
-                            R.plurals.notif_summary_active, cluster.size(), cluster.size()));
+                    if (hasPausedStatus) {
+                        builder.setContentTitle(res.getString(R.string.download_queued));
+                    } else {
+                        builder.setContentTitle(res.getQuantityString(
+                                R.plurals.notif_summary_active, cluster.size(), cluster.size()));
+                    }
                     builder.setContentText(remainingText);
                     builder.setContentInfo(res.getString(R.string.download_speed_text,
                                 percentText, speedAsSizeText));
@@ -380,7 +406,7 @@ public class DownloadNotifier {
     }
 
     private static boolean isActiveAndVisible(DownloadInfo download) {
-        return download.mStatus == STATUS_RUNNING &&
+        return Downloads.Impl.isStatusInformational(download.mStatus) &&
                 (download.mVisibility == VISIBILITY_VISIBLE
                 || download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
     }
@@ -390,4 +416,9 @@ public class DownloadNotifier {
                 (download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_COMPLETED
                 || download.mVisibility == VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION);
     }
+
+    private static boolean isPausedStatus(int status) {
+        return status == Downloads.Impl.STATUS_WAITING_FOR_NETWORK ||
+                status == Downloads.Impl.STATUS_PAUSED_BY_MANUAL;
+    }
 }