private void FetchDownloadButton_Click(object sender, RoutedEventArgs e)
{
if (fetchDownloadEnum == FetchDownloadCancel.Fetch)
{
//Check if thread is valid and populate info
//Replace true with populate info
subFolderName = GetSubFolderName(URLTextBox.Text);
imagesDictionary = Downloader.ViewThread(URLTextBox.Text);
PopulateDataGridView();
if (imagesDictionary.Count > 0)
{
isFetchValid = true;
FetchDownloadButton.Content = "Download";
fetchDownloadEnum = FetchDownloadCancel.Download;
//Prevents users from accessing it until done
CancelButton.Visibility = Visibility.Visible;
URLTextBox.IsEnabled = false;
}
else
{
MessageBox.Show("Error: Cannot start until a valid thread is inputted.");
}
}
else if (fetchDownloadEnum == FetchDownloadCancel.Download)
{
if (isFetchValid == true)
{
backgroundWorker.RunWorkerAsync();
FetchDownloadButton.Content = "Cancel";
fetchDownloadEnum = FetchDownloadCancel.Cancel;
}
else
{
MessageBox.Show("Error: Cannot start until a valid thread is inputted.");
}
}
else if (fetchDownloadEnum == FetchDownloadCancel.Cancel)
{
if (backgroundWorker.IsBusy)
{
backgroundWorker.CancelAsync();
}
FetchDownloadButton.Content = "Fetch";
isFetchValid = false;
fetchDownloadEnum = FetchDownloadCancel.Fetch;
//Prevents users from accessing it until done
CancelButton.Visibility = Visibility.Collapsed;
URLTextBox.IsEnabled = true;
}
UpdateLabelFileSize();
}
private void CancelButton_Click(object sender, RoutedEventArgs e)
{
if (backgroundWorker.IsBusy)
{
backgroundWorker.CancelAsync();
}
FetchDownloadButton.Content = "Fetch";
fetchDownloadEnum = FetchDownloadCancel.Fetch;
//Prevents users from accessing it until done
CancelButton.Visibility = Visibility.Collapsed;
URLTextBox.IsEnabled = true;
UpdateLabelFileSize();
}
private void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
//Only runs if downloadDirectory exists
if (!string.IsNullOrEmpty(Properties.Settings.Default.downloadDirectory))
{
BackgroundWorker worker = sender as BackgroundWorker;
string directoryToSaveTo;
if (Properties.Settings.Default.createSubFolderOnDownload)
{
//Check if subdirectory exists if not it creates it
directoryToSaveTo = Properties.Settings.Default.downloadDirectory + "\\" + subFolderName;
DirectoryInfo destinationDirectory = new DirectoryInfo(directoryToSaveTo);
if (!destinationDirectory.Exists)
{
destinationDirectory.Create();
}
}
else
{
directoryToSaveTo = Properties.Settings.Default.downloadDirectory;
}
for (int i = 0; i < imagesDictionary.Count; i++)
{
if (worker.CancellationPending == true)
{
e.Cancel = true;
break;
}
else
{
string result;
if (dt.Rows[i].Field <bool>(0) == true)
{
result = Downloader.DownloadImage(imagesDictionary[i].getURLOfImage(), imagesDictionary[i].getNameOfImage(), imagesDictionary[i].getFileTypeOfImage(), directoryToSaveTo);
}
else
{
result = "SKIPPED";
}
//Shows success or fail for each image
DataGrid.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal,
new Action(delegate()
{
if (!dt.Rows[i - 1].IsNull(5))
{
dt.Rows[i - 1].SetField(5, result);
}
}));
}
int returnProgressPercent = (int)Math.Ceiling((decimal)(i + 1) / imagesDictionary.Count * 100);
worker.ReportProgress(returnProgressPercent);
}
//Resets button on completion
isFetchValid = false;
fetchDownloadEnum = FetchDownloadCancel.Fetch;
FetchDownloadButton.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal,
new Action(delegate()
{
FetchDownloadButton.Content = "Fetch";
}));
CancelButton.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal,
new Action(delegate()
{
CancelButton.Visibility = Visibility.Collapsed;
}));
URLTextBox.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal,
new Action(delegate()
{
URLTextBox.IsEnabled = true;
}));
//When done either exits or shows message or resumes
if (Properties.Settings.Default.exitOnComplete)
{
Environment.Exit(0);
}
else if (Properties.Settings.Default.showMessageBoxOnComplete)
{
MessageBox.Show("Success! All files downloaded sucessfully");
}
}
else
{
MessageBox.Show("Error: Cannot start program until download directory is specified in Settings");
}
}
