public async void MemoryFriendlyGetItemsAsync(string path, Page passedPage)
{
TextState.isVisible = Visibility.Collapsed;
tokenSource = new CancellationTokenSource();
CancellationToken token = App.ViewModel.tokenSource.Token;
pageName = passedPage.Name;
Universal.path = path;
// Personalize retrieved items for view they are displayed in
switch (pageName)
{
case "GenericItemView":
isPhotoAlbumMode = false;
break;
case "PhotoAlbumViewer":
isPhotoAlbumMode = true;
break;
case "ClassicModePage":
isPhotoAlbumMode = false;
break;
}
if (pageName != "ClassicModePage")
{
FilesAndFolders.Clear();
}
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Universal.path = path; // Set visible path to reflect new navigation
try
{
PVIS.isVisible = Visibility.Visible;
TextState.isVisible = Visibility.Collapsed;
switch (Universal.path)
{
case "Desktop":
Universal.path = MainPage.DesktopPath;
break;
case "Downloads":
Universal.path = MainPage.DownloadsPath;
break;
case "Documents":
Universal.path = MainPage.DocumentsPath;
break;
case "Pictures":
Universal.path = MainPage.PicturesPath;
break;
case "Music":
Universal.path = MainPage.MusicPath;
break;
case "Videos":
Universal.path = MainPage.VideosPath;
break;
case "OneDrive":
Universal.path = MainPage.OneDrivePath;
break;
}
folder = await StorageFolder.GetFolderFromPathAsync(Universal.path);
History.AddToHistory(Universal.path);
if (History.HistoryList.Count == 1)
{
BS.isEnabled = false;
}
else if (History.HistoryList.Count > 1)
{
BS.isEnabled = true;
}
QueryOptions options = new QueryOptions()
{
FolderDepth = FolderDepth.Shallow,
IndexerOption = IndexerOption.UseIndexerWhenAvailable
};
string sort = "By_Name";
if (sort == "By_Name")
{
SortEntry entry = new SortEntry()
{
AscendingOrder = true,
PropertyName = "System.FileName"
};
options.SortOrder.Add(entry);
}
uint index = 0;
const uint step = 250;
if (!folder.AreQueryOptionsSupported(options))
{
options.SortOrder.Clear();
}
folderQueryResult = folder.CreateFolderQueryWithOptions(options);
IReadOnlyList <StorageFolder> folders = await folderQueryResult.GetFoldersAsync(index, step);
int foldersCountSnapshot = folders.Count;
while (folders.Count != 0)
{
foreach (StorageFolder folder in folders)
{
if (token.IsCancellationRequested)
{
return;
}
gotFolName = folder.Name.ToString();
gotFolDate = folder.DateCreated.ToString();
gotFolPath = folder.Path.ToString();
gotFolType = "Folder";
gotFolImg = Visibility.Visible;
gotFileImgVis = Visibility.Collapsed;
gotEmptyImgVis = Visibility.Collapsed;
if (pageName == "ClassicModePage")
{
ClassicFolderList.Add(new Classic_ListedFolderItem()
{
FileName = gotFolName, FileDate = gotFolDate, FileExtension = gotFolType, FilePath = gotFolPath
});
}
else
{
FilesAndFolders.Add(new ListedItem()
{
EmptyImgVis = gotEmptyImgVis, ItemIndex = FilesAndFolders.Count, FileImg = null, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotFolName, FileDate = gotFolDate, FileExtension = gotFolType, FilePath = gotFolPath
});
}
}
index += step;
folders = await folderQueryResult.GetFoldersAsync(index, step);
}
index = 0;
fileQueryResult = folder.CreateFileQueryWithOptions(options);
IReadOnlyList <StorageFile> files = await fileQueryResult.GetFilesAsync(index, step);
int filesCountSnapshot = files.Count;
while (files.Count != 0)
{
foreach (StorageFile file in files)
{
if (token.IsCancellationRequested)
{
return;
}
gotName = file.DisplayName.ToString();
gotDate = file.DateCreated.ToString(); // In the future, parse date to human readable format
if (file.FileType.ToString() == ".exe")
{
gotType = "Executable";
}
else
{
gotType = file.DisplayType;
}
gotPath = file.Path.ToString();
gotFolImg = Visibility.Collapsed;
gotDotFileExtension = file.FileType;
if (isPhotoAlbumMode == false)
{
const uint requestedSize = 20;
const ThumbnailMode thumbnailMode = ThumbnailMode.ListView;
const ThumbnailOptions thumbnailOptions = ThumbnailOptions.UseCurrentScale;
try
{
gotFileImg = await file.GetThumbnailAsync(thumbnailMode, requestedSize, thumbnailOptions);
BitmapImage icon = new BitmapImage();
if (gotFileImg != null)
{
gotEmptyImgVis = Visibility.Collapsed;
icon.SetSource(gotFileImg.CloneStream());
}
else
{
gotEmptyImgVis = Visibility.Visible;
}
gotFileImgVis = Visibility.Visible;
if (pageName == "ClassicModePage")
{
ClassicFileList.Add(new ListedItem()
{
FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
else
{
FilesAndFolders.Add(new ListedItem()
{
DotFileExtension = gotDotFileExtension, EmptyImgVis = gotEmptyImgVis, FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
}
catch
{
// Silent catch here to avoid crash
// TODO maybe some logging could be added in the future...
}
}
else
{
const uint requestedSize = 275;
const ThumbnailMode thumbnailMode = ThumbnailMode.PicturesView;
const ThumbnailOptions thumbnailOptions = ThumbnailOptions.ResizeThumbnail;
try
{
gotFileImg = await file.GetThumbnailAsync(thumbnailMode, requestedSize, thumbnailOptions);
BitmapImage icon = new BitmapImage();
if (gotFileImg != null)
{
gotEmptyImgVis = Visibility.Collapsed;
icon.SetSource(gotFileImg.CloneStream());
}
else
{
gotEmptyImgVis = Visibility.Visible;
}
gotFileImgVis = Visibility.Visible;
if (pageName == "ClassicModePage")
{
ClassicFileList.Add(new ListedItem()
{
FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
else
{
FilesAndFolders.Add(new ListedItem()
{
DotFileExtension = gotDotFileExtension, EmptyImgVis = gotEmptyImgVis, FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
}
catch
{
// Silent catch here to avoid crash
// TODO maybe some logging could be added in the future...
}
}
}
index += step;
files = await fileQueryResult.GetFilesAsync(index, step);
}
if (foldersCountSnapshot + filesCountSnapshot == 0)
{
TextState.isVisible = Visibility.Visible;
}
if (pageName != "ClassicModePage")
{
PVIS.isVisible = Visibility.Collapsed;
}
PVIS.isVisible = Visibility.Collapsed;
stopwatch.Stop();
Debug.WriteLine("Loading of: " + path + " completed in " + stopwatch.ElapsedMilliseconds + " Milliseconds.");
}
catch (UnauthorizedAccessException e)
{
if (path.Contains(@"C:\"))
{
DisplayConsentDialog();
}
else
{
MessageDialog unsupportedDevice = new MessageDialog("This device may be unsupported. Please file an issue report in Settings - About containing what device we couldn't access. Technical information: " + e, "Unsupported Device");
await unsupportedDevice.ShowAsync();
}
stopwatch.Stop();
Debug.WriteLine("Loading of: " + Universal.path + " failed in " + stopwatch.ElapsedMilliseconds + " Milliseconds.");
}
catch (COMException e)
{
stopwatch.Stop();
Debug.WriteLine("Loading of: " + Universal.path + " failed in " + stopwatch.ElapsedMilliseconds + " Milliseconds.");
Frame rootFrame = Window.Current.Content as Frame;
MessageDialog driveGone = new MessageDialog(e.Message, "Drive Unplugged");
await driveGone.ShowAsync();
rootFrame.Navigate(typeof(MainPage), new SuppressNavigationTransitionInfo());
}
tokenSource = null;
}
public async void GetItemsAsync(string path)
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
IsTerminated = false;
PUIP.Path = path;
try
{
folder = await StorageFolder.GetFolderFromPathAsync(path); // Set location to the current directory specified in path
folderList = await folder.GetFoldersAsync(); // Create a read-only list of all folders in location
fileList = await folder.GetFilesAsync(); // Create a read-only list of all files in location
NumOfFolders = folderList.Count; // How many folders are in the list
NumOfFiles = fileList.Count; // How many files are in the list
NumOfItems = NumOfFiles + NumOfFolders;
NumItemsRead = 0;
if (NumOfItems == 0)
{
TextState.isVisible = Visibility.Visible;
}
PUIH.Header = "Loading " + NumOfItems + " items";
ButtonText.buttonText = "Hide";
if (NumOfItems >= 250)
{
PVIS.isVisible = Visibility.Visible;
}
if (NumOfFolders > 0)
{
foreach (StorageFolder fol in folderList)
{
if (IsStopRequested)
{
IsStopRequested = false;
IsTerminated = true;
return;
}
int ProgressReported = (NumItemsRead * 100 / NumOfItems);
UpdateProgUI(ProgressReported);
gotFolName = fol.Name.ToString();
gotFolDate = fol.DateCreated.ToString();
gotFolPath = fol.Path.ToString();
gotFolType = "Folder";
gotFolImg = Visibility.Visible;
gotFileImgVis = Visibility.Collapsed;
if (pageName == "ClassicModePage")
{
ClassicFolderList.Add(new Classic_ListedFolderItem()
{
FileName = gotFolName, FileDate = gotFolDate, FileExtension = gotFolType, FilePath = gotFolPath
});
}
else
{
FilesAndFolders.Add(new ListedItem()
{
ItemIndex = FilesAndFolders.Count, FileImg = null, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotFolName, FileDate = gotFolDate, FileExtension = gotFolType, FilePath = gotFolPath
});
}
NumItemsRead++;
}
}
if (NumOfFiles > 0)
{
foreach (StorageFile f in fileList)
{
if (IsStopRequested)
{
IsStopRequested = false;
IsTerminated = true;
return;
}
int ProgressReported = (NumItemsRead * 100 / NumOfItems);
UpdateProgUI(ProgressReported);
gotName = f.Name.ToString();
gotDate = f.DateCreated.ToString(); // In the future, parse date to human readable format
if (f.FileType.ToString() == ".exe")
{
gotType = "Executable";
}
else
{
gotType = f.DisplayType;
}
gotPath = f.Path.ToString();
gotFolImg = Visibility.Collapsed;
if (isPhotoAlbumMode == false)
{
const uint requestedSize = 20;
const ThumbnailMode thumbnailMode = ThumbnailMode.ListView;
const ThumbnailOptions thumbnailOptions = ThumbnailOptions.UseCurrentScale;
gotFileImg = await f.GetThumbnailAsync(thumbnailMode, requestedSize, thumbnailOptions);
}
else
{
const uint requestedSize = 275;
const ThumbnailMode thumbnailMode = ThumbnailMode.PicturesView;
const ThumbnailOptions thumbnailOptions = ThumbnailOptions.ResizeThumbnail;
gotFileImg = await f.GetThumbnailAsync(thumbnailMode, requestedSize, thumbnailOptions);
}
BitmapImage icon = new BitmapImage();
if (gotFileImg != null)
{
icon.SetSource(gotFileImg.CloneStream());
}
gotFileImgVis = Visibility.Visible;
if (pageName == "ClassicModePage")
{
ClassicFileList.Add(new ListedItem()
{
FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
else
{
FilesAndFolders.Add(new ListedItem()
{
FileImg = icon, FileIconVis = gotFileImgVis, FolderImg = gotFolImg, FileName = gotName, FileDate = gotDate, FileExtension = gotType, FilePath = gotPath
});
}
NumItemsRead++;
}
}
if (pageName != "ClassicModePage")
{
PVIS.isVisible = Visibility.Collapsed;
}
IsTerminated = true;
}
catch (UnauthorizedAccessException)
{
DisplayConsentDialog();
}
stopwatch.Stop();
Debug.WriteLine("Loading of: " + path + " completed in " + stopwatch.ElapsedMilliseconds + " Milliseconds.");
}