private Tuple <String, String> calculateDownloadEstimates(DownloadResource resource, int referencePeriodInSeconds)
{
long referencePeriod = 1000 * referencePeriodInSeconds;
long currentTimestamp = DemoUtils.CurrentTimeMillis();
long downloadPeriod = currentTimestamp - referencePeriod < _activity.downloadStartTime ? currentTimestamp - _activity.downloadStartTime : referencePeriod;
long totalBytesDownloaded = 0;
var iterator = _activity.downloadChunksMap.GetEnumerator();
do
{
var entry = iterator.Current;
long timestamp = entry.Key;
long bytesDownloaded = entry.Value;
if (currentTimestamp - timestamp > referencePeriod)
{
//iterator.remove(); remove current item
}
else
{
totalBytesDownloaded += bytesDownloaded;
}
} while (iterator.MoveNext());
float downloadPeriodSec = downloadPeriod / 1000f;
long bytesPerSecond = (long)Math.Round(totalBytesDownloaded / downloadPeriodSec);
String formattedTimeLeft = "";
if (totalBytesDownloaded == 0)
{
formattedTimeLeft = "-";
}
else if (resource is MapDownloadResource)
{
MapDownloadResource mapResource = (MapDownloadResource)resource;
long remainingBytes = (mapResource.getSkmAndZipFilesSize() + mapResource.getTXGFileSize()) - mapResource.NoDownloadedBytes;
long timeLeft = (downloadPeriod * remainingBytes) / totalBytesDownloaded;
formattedTimeLeft = getFormattedTime(timeLeft);
}
return(new Tuple <string, string>(convertBytesToStringRepresentation(bytesPerSecond) + "/s", formattedTimeLeft));
}
private int getPercentage(DownloadResource downloadResource)
{
int percentage = 0;
if (downloadResource is MapDownloadResource)
{
MapDownloadResource mapDownloadResource = (MapDownloadResource)downloadResource;
percentage = (int)(((float)mapDownloadResource.NoDownloadedBytes / (mapDownloadResource.getSkmAndZipFilesSize() + mapDownloadResource.getTXGFileSize())) * 100);
}
return(percentage);
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
ListItem currentItem = this[position];
View view = null;
if (convertView == null)
{
LayoutInflater inflater = _activity.GetSystemService(Context.LayoutInflaterService) as LayoutInflater;
view = inflater.Inflate(Resource.Layout.element_download_list_item, null);
}
else
{
view = convertView;
}
ImageView arrowImage = view.FindViewById <ImageView>(Resource.Id.arrow);
TextView downloadSizeText = view.FindViewById <TextView>(Resource.Id.package_size);
TextView downloadNameText = view.FindViewById <TextView>(Resource.Id.package_name);
RelativeLayout middleLayout = view.FindViewById <RelativeLayout>(Resource.Id.middle_layout);
ImageView startPauseImage = view.FindViewById <ImageView>(Resource.Id.start_pause);
ImageView cancelImage = view.FindViewById <ImageView>(Resource.Id.cancel);
TextView stateText = view.FindViewById <TextView>(Resource.Id.current_state);
ProgressBar progressBar = view.FindViewById <ProgressBar>(Resource.Id.download_progress);
RelativeLayout progressDetailsLayout = view.FindViewById <RelativeLayout>(Resource.Id.progress_details);
TextView percentageText = view.FindViewById <TextView>(Resource.Id.percentage);
TextView timeLeftText = view.FindViewById <TextView>(Resource.Id.time_left);
TextView speedText = view.FindViewById <TextView>(Resource.Id.speed);
downloadNameText.Text = currentItem.Name;
if (currentItem.Children == null || currentItem.Children.Count == 0)
{
arrowImage.Visibility = ViewStates.Gone;
}
else
{
arrowImage.Visibility = ViewStates.Visible;
}
if (currentItem.DownloadResource != null)
{
DownloadResource downloadResource = currentItem.DownloadResource;
bool progressShown = downloadResource.DownloadState == SKToolsDownloadItem.Downloading || downloadResource.DownloadState == SKToolsDownloadItem.Paused;
if (progressShown)
{
progressBar.Visibility = ViewStates.Visible;
progressDetailsLayout.Visibility = ViewStates.Visible;
progressBar.Progress = getPercentage(downloadResource);
percentageText.Text = getPercentage(downloadResource) + "%";
if (downloadResource.DownloadState == SKToolsDownloadItem.Paused)
{
timeLeftText.Text = "-";
speedText.Text = "-";
}
else if (_activity.refreshDownloadEstimates)
{
Tuple <string, string> pair = calculateDownloadEstimates(downloadResource, 20);
speedText.Text = pair.Item1;
timeLeftText.Text = pair.Item2;
_activity.refreshDownloadEstimates = false;
}
}
else
{
progressBar.Visibility = ViewStates.Gone;
progressDetailsLayout.Visibility = ViewStates.Gone;
}
long bytesToDownload = 0;
if (downloadResource is MapDownloadResource)
{
MapDownloadResource mapResource = (MapDownloadResource)downloadResource;
bytesToDownload = mapResource.getSkmAndZipFilesSize() + mapResource.getTXGFileSize();
}
if (bytesToDownload != 0)
{
middleLayout.Visibility = ViewStates.Visible;
downloadSizeText.Visibility = ViewStates.Visible;
downloadSizeText.Text = convertBytesToStringRepresentation(bytesToDownload);
}
else
{
middleLayout.Visibility = ViewStates.Gone;
downloadSizeText.Visibility = ViewStates.Gone;
}
switch (downloadResource.DownloadState)
{
case SKToolsDownloadItem.NotQueued:
stateText.Text = ("NOT QUEUED");
break;
case SKToolsDownloadItem.Queued:
stateText.Text = ("QUEUED");
break;
case SKToolsDownloadItem.Downloading:
stateText.Text = ("DOWNLOADING");
break;
case SKToolsDownloadItem.Downloaded:
stateText.Text = ("DOWNLOADED");
break;
case SKToolsDownloadItem.Paused:
stateText.Text = ("PAUSED");
break;
case SKToolsDownloadItem.Installing:
stateText.Text = ("INSTALLING");
break;
case SKToolsDownloadItem.Installed:
stateText.Text = ("INSTALLED");
break;
default:
break;
}
if (downloadResource.DownloadState == SKToolsDownloadItem.NotQueued || downloadResource.DownloadState == SKToolsDownloadItem.Downloading ||
downloadResource.DownloadState == SKToolsDownloadItem.Paused)
{
startPauseImage.Visibility = ViewStates.Visible;
if (downloadResource.DownloadState == SKToolsDownloadItem.Downloading)
{
startPauseImage.SetImageResource(Resource.Drawable.pause);
}
else
{
startPauseImage.SetImageResource(Resource.Drawable.download);
}
}
else
{
startPauseImage.Visibility = ViewStates.Gone;
}
if (downloadResource.DownloadState == SKToolsDownloadItem.NotQueued || downloadResource.DownloadState == SKToolsDownloadItem.Installing)
{
cancelImage.Visibility = ViewStates.Gone;
}
else
{
cancelImage.Visibility = ViewStates.Visible;
}
if (downloadResource is MapDownloadResource)
{
MapDownloadResource mapResource = (MapDownloadResource)downloadResource;
}
}
else
{
// no download resource
downloadSizeText.Visibility = ViewStates.Gone;
middleLayout.Visibility = ViewStates.Gone;
progressBar.Visibility = ViewStates.Gone;
progressDetailsLayout.Visibility = ViewStates.Gone;
downloadSizeText.Visibility = ViewStates.Gone;
}
view.Click += (s, e) =>
{
if (currentItem.Children == null || currentItem.Children.Count == 0)
{
return;
}
_activity.currentListItems = currentItem.Children;
_activity.buildCodesMap();
_activity.previousListIndexes.Push(_activity.listView.FirstVisiblePosition);
_activity.updateListAndScrollToPosition(0);
};
startPauseImage.Click += (s, e) =>
{
if (currentItem.DownloadResource.DownloadState != SKToolsDownloadItem.Downloading)
{
if (currentItem.DownloadResource.DownloadState != SKToolsDownloadItem.Paused)
{
activeDownloads.Add(currentItem.DownloadResource);
currentItem.DownloadResource.DownloadState = SKToolsDownloadItem.Queued;
_activity.appContext.AppPrefs.SaveDownloadQueuePreference(activeDownloads);
String destinationPath = _activity.appContext.MapResourcesDirPath + "downloads/";
File destinationFile = new File(destinationPath);
if (!destinationFile.Exists())
{
destinationFile.Mkdirs();
}
currentItem.DownloadResource.DownloadPath = destinationPath;
mapsDAO.updateMapResource((MapDownloadResource)currentItem.DownloadResource);
}
NotifyDataSetChanged();
List <SKToolsDownloadItem> downloadItems;
if (!_activity.downloadManager.IsDownloadProcessRunning)
{
downloadItems = _activity.createDownloadItemsFromDownloadResources(activeDownloads);
}
else
{
List <DownloadResource> mapDownloadResources = new List <DownloadResource>();
mapDownloadResources.Add(currentItem.DownloadResource);
downloadItems = _activity.createDownloadItemsFromDownloadResources(mapDownloadResources);
}
_activity.downloadManager.StartDownload(downloadItems);
}
else
{
_activity.downloadManager.PauseDownloadThread();
}
};
cancelImage.Click += (s, e) =>
{
if (currentItem.DownloadResource.DownloadState != SKToolsDownloadItem.Installed)
{
bool downloadCancelled = _activity.downloadManager.CancelDownload(currentItem.DownloadResource.Code);
if (!downloadCancelled)
{
currentItem.DownloadResource.DownloadState = (SKToolsDownloadItem.NotQueued);
currentItem.DownloadResource.NoDownloadedBytes = (0);
mapsDAO.updateMapResource((MapDownloadResource)currentItem.DownloadResource);
activeDownloads.Remove(currentItem.DownloadResource);
_activity.appContext.AppPrefs.SaveDownloadQueuePreference(activeDownloads);
NotifyDataSetChanged();
}
}
else
{
bool packageDeleted = SKPackageManager.Instance.DeleteOfflinePackage(currentItem.DownloadResource.Code);
if (packageDeleted)
{
Toast.MakeText(_activity.appContext, ((MapDownloadResource)currentItem.DownloadResource).getName() + " was uninstalled", ToastLength.Short).Show();
}
currentItem.DownloadResource.DownloadState = (SKToolsDownloadItem.NotQueued);
currentItem.DownloadResource.NoDownloadedBytes = (0);
mapsDAO.updateMapResource((MapDownloadResource)currentItem.DownloadResource);
NotifyDataSetChanged();
}
};
return(view);
}