/// <summary>
/// Display the source properties when a new source is selected.
/// </summary>
/// <param name="sender">The source of the selection changed event</param>
/// <param name="e">Details about the selection chagned event</param>
private void SourceList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
// reset any previous items
this.itemsToImport = null;
this.fileListView.ItemsSource = null;
// enable find options
this.OnlyImages.IsEnabled = true;
this.OnlyVideo.IsEnabled = true;
this.ImagesAndVideo.IsEnabled = true;
// set the default to find Images and Video
this.ImagesAndVideo.IsChecked = true;
// clear any values in the source properties
this.propertiesTxtBox.Text = "";
if (e.AddedItems.Count != 0)
{
this.importSource = e.AddedItems.First() as PhotoImportSource;
DisplaySourceProperties();
// enable Find New and Find All buttons, disable the rest
this.findNewItemsButton.IsEnabled = true;
this.findAllItemsButton.IsEnabled = true;
this.selectNewButton.IsEnabled = false;
this.selectNoneButton.IsEnabled = false;
this.selectAllButton.IsEnabled = false;
this.deleteButton.IsEnabled = false;
this.importButton.IsEnabled = false;
}
}
/// <summary
/// This app is registered as a hanlder for WPD\IMageSourceAutoPlay event.
/// When a user connects a WPD device (ie: Camera), OnNavigatedTo is called with DeviceInformationId
/// that we can call FromIdAsync() and preselect the device.
///
/// We also need to handle the situation where the client was terminated while an import operation was in flight.
/// Import will continue and we attempt to reconnect back to the session.
/// </summary>
/// <param name="e">Details about the NavigationEventArgs</param>
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
rootPage = MainPage.Current;
try
{
//An photo import session was in progress
if (e.Parameter is PhotoImportOperation)
{
PhotoImportOperation op = e.Parameter as PhotoImportOperation;
switch (op.Stage)
{
// file enumeration was running
case PhotoImportStage.FindingItems:
cts = new CancellationTokenSource();
rootPage.NotifyUser("Reconnected back to the file enumeration stage", NotifyType.StatusMessage);
// Set up progress handler for existing file enumeration
var findAllItemsProgress = new Progress <uint>((result) =>
{
rootPage.NotifyUser(String.Format("Found {0} Files", result.ToString()), NotifyType.StatusMessage);
});
// retrieve previous session
this.session = op.Session;
// get to the operation for the existing FindItemsAsync session
this.itemsResult = await op.ContinueFindingItemsAsync.AsTask(cts.Token, findAllItemsProgress);
// display the items we found in the previous session
setIncrementalFileList(this.itemsResult);
this.selectAllButton.IsEnabled = true;
this.selectNoneButton.IsEnabled = true;
this.selectNewButton.IsEnabled = true;
this.importButton.IsEnabled = true;
DisplayFindItemsResult();
cts = null;
break;
// Import was running
case PhotoImportStage.ImportingItems:
rootPage.NotifyUser("Reconnected back to the importing stage.", NotifyType.StatusMessage);
setButtonState(false);
cts = new CancellationTokenSource();
// Set up progress handler for the existing import session
var importSelectedItemsProgress = new Progress <PhotoImportProgress>((result) =>
{
progressBar.Value = result.ImportProgress;
});
// retrieve the previous operation
this.session = op.Session;
// get the itemsResult that were found in the previous session
this.itemsResult = await op.ContinueFindingItemsAsync.AsTask();
// hook up the ItemImported Handler to show progress
this.itemsResult.ItemImported += async(s, a) =>
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
rootPage.NotifyUser(String.Format("Imported: {0}", a.ImportedItem.Name), NotifyType.StatusMessage);
});
};
// Get the operation for the import operation that was in flight
this.importedResult = await op.ContinueImportingItemsAsync.AsTask(cts.Token, importSelectedItemsProgress);
DisplayImportedSummary();
this.findSourceButton.IsEnabled = true;
this.deleteButton.IsEnabled = true;
cts = null;
break;
// Delete operation is in progress
case PhotoImportStage.DeletingImportedItemsFromSource:
rootPage.NotifyUser("Reconnected to the deletion stage.", NotifyType.StatusMessage);
this.findSourceButton.IsEnabled = false;
this.deleteButton.IsEnabled = false;
cts = new CancellationTokenSource();
var progress = new Progress <double>((result) =>
{
this.progressBar.Value = result;
});
// get the operation for the existing delete session
this.deleteResult = await op.ContinueDeletingImportedItemsFromSourceAsync.AsTask(cts.Token, progress);
DisplayDeletedResults();
if (!deleteResult.HasSucceeded)
{
rootPage.NotifyUser("Deletion did not succeeded or was cancelled.", NotifyType.StatusMessage);
}
this.findSourceButton.IsEnabled = true;
// Set the CancellationTokenSource to null when the work is complete.
cts = null;
break;
// Idle State.
case PhotoImportStage.NotStarted:
rootPage.NotifyUser("No import tasks was started.", NotifyType.StatusMessage);
this.session = op.Session;
break;
default:
break;
}
}
// Activated by AutoPlay
if (e.Parameter is DeviceActivatedEventArgs)
{
this.arguments = e.Parameter as DeviceActivatedEventArgs;
bool importSupported = await PhotoImportManager.IsSupportedAsync();
this.sourceListBox.Items.Clear();
List <PhotoImportSource> source = new List <PhotoImportSource>();
// Create the source from a device Id
source.Add(await PhotoImportSource.FromIdAsync(this.arguments.DeviceInformationId));
// bind and preselects source
this.sourceListBox.ItemsSource = source;
this.sourceListBox.SelectedIndex = 0;
rootPage.NotifyUser("Device selected from AutoPlay", NotifyType.StatusMessage);
}
}
catch (Exception ex)
{
rootPage.NotifyUser("Exception: " + ex.ToString(), NotifyType.ErrorMessage);
}
}
// </SnippetDeclareImportSource>
// <SnippetSourcesSelectionChanged>
private void sourcesComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
this.importSource = (PhotoImportSource)((ComboBoxItem)sourcesComboBox.SelectedItem).Tag;
FindItems();
}
/// <summary>
/// Display the source properties when a new source is selected.
/// </summary>
/// <param name="sender">The source of the selection changed event</param>
/// <param name="e">Details about the selection chagned event</param>
private void SourceList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
// reset any previous items
this.itemsToImport = null;
this.fileListView.ItemsSource = null;
// clear any values in the source properties
this.propertiesTxtBox.Text = "";
if (e.AddedItems.Count != 0)
{
// enable find options
this.OnlyImages.IsEnabled = true;
this.OnlyVideo.IsEnabled = true;
this.ImagesAndVideo.IsEnabled = true;
// set the default to find Images and Video
this.ImagesAndVideo.IsChecked = true;
this.importSource = e.AddedItems.First() as PhotoImportSource;
DisplaySourceProperties();
// enable Find New and Find All buttons, disable the rest
this.findNewItemsButton.IsEnabled = true;
this.findAllItemsButton.IsEnabled = true;
this.selectNewButton.IsEnabled = false;
this.selectNoneButton.IsEnabled = false;
this.selectAllButton.IsEnabled = false;
this.deleteButton.IsEnabled = false;
this.importButton.IsEnabled = false;
}
}
