void Unsibscribe(UIDocumentMenuViewController menu)
{
menu.WasCancelled -= OnPickerSelectionCancel;
menu.DidPickDocumentPicker -= OnPickerPicked;
}
/// <summary>
/// Views the did load.
/// </summary>
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
// Save the default text area height
_documentTextHeight = DocumentText.Frame.Height;
// var picker = new UIDocumentPickerViewController (srcURL, UIDocumentPickerMode.ExportToService);
// Watch for a new document being created
ThisApp.DocumentLoaded += (document) => {
// Display the contents of the document
DocumentText.Text = document.Contents;
// Watch for the document being modified by an outside source
document.DocumentModified += (doc) => {
// Display the updated contents of the document
DocumentText.Text = doc.Contents;
Console.WriteLine("Document contents have been updated");
};
};
// Wireup events for the text editor
DocumentText.ShouldBeginEditing= delegate(UITextView field){
//Placeholder
MoveDocumentText(_documentTextHeight-170f);
return true;
};
DocumentText.ShouldEndEditing= delegate (UITextView field){
MoveDocumentText(_documentTextHeight);
ThisApp.Document.Contents = DocumentText.Text;
return true;
};
// Wireup the Save button
SaveButton.Clicked += (sender, e) => {
// Close the keyboard
DocumentText.ResignFirstResponder();
// Save the changes to the document
ThisApp.SaveDocument();
};
// Wireup the Action buttom
ActionButton.Clicked += (s, e) => {
// Allow the Document picker to select a range of document types
var allowedUTIs = new string[] {
UTType.UTF8PlainText,
UTType.PlainText,
UTType.RTF,
UTType.PNG,
UTType.Text,
UTType.PDF,
UTType.Image
};
// Display the picker
//var picker = new UIDocumentPickerViewController (allowedUTIs, UIDocumentPickerMode.Open);
var pickerMenu = new UIDocumentMenuViewController(allowedUTIs, UIDocumentPickerMode.Open);
pickerMenu.DidPickDocumentPicker += (sender, args) => {
// Wireup Document Picker
args.DocumentPicker.DidPickDocument += (sndr, pArgs) => {
// IMPORTANT! You must lock the security scope before you can
// access this file
var securityEnabled = pArgs.Url.StartAccessingSecurityScopedResource();
// Open the document
ThisApp.OpenDocument(pArgs.Url);
// TODO: This should work but doesn't
// Apple's WWDC 2014 sample project does this but it blows
// up in Xamarin
NSFileCoordinator fileCoordinator = new NSFileCoordinator();
NSError err;
fileCoordinator.CoordinateRead (pArgs.Url, 0, out err, (NSUrl newUrl) => {
NSData data = NSData.FromUrl(newUrl);
Console.WriteLine("Data: {0}",data);
});
// IMPORTANT! You must release the security lock established
// above.
pArgs.Url.StopAccessingSecurityScopedResource();
};
// Display the document picker
PresentViewController(args.DocumentPicker,true,null);
};
pickerMenu.ModalPresentationStyle = UIModalPresentationStyle.Popover;
PresentViewController(pickerMenu,true,null);
UIPopoverPresentationController presentationPopover = pickerMenu.PopoverPresentationController;
if (presentationPopover!=null) {
presentationPopover.SourceView = this.View;
presentationPopover.PermittedArrowDirections = UIPopoverArrowDirection.Down;
presentationPopover.SourceRect = ((UIButton)s).Frame;
}
};
}
void SetupDelegateThenPresent(UIDocumentMenuViewController vc, UIButton button)
{
vc.WasCancelled += OnPickerSelectionCancel;
vc.DidPickDocumentPicker += OnPickerPicked;
vc.AddOption ("Custom Option", null, UIDocumentMenuOrder.First, () => {
Console.WriteLine ("completionHandler Hit");
});
vc.ModalPresentationStyle = UIModalPresentationStyle.Popover;
PresentViewController (vc, true, null);
UIPopoverPresentationController presentationPopover = vc.PopoverPresentationController;
if (presentationPopover != null) {
presentationPopover.SourceView = View;
presentationPopover.PermittedArrowDirections = UIPopoverArrowDirection.Down;
presentationPopover.SourceRect = button.Frame;
}
}
public void MoveToDocMenu(UIButton sender)
{
if (TryShowFileNotExistsError ())
return;
UIDocumentMenuViewController vc = new UIDocumentMenuViewController (documentURL, UIDocumentPickerMode.MoveToService);
SetupDelegateThenPresent (vc, sender);
}
public void OpenDocMenu(UIButton sender)
{
UIDocumentMenuViewController vc = new UIDocumentMenuViewController (allowedUTIs, UIDocumentPickerMode.Open);
SetupDelegateThenPresent (vc, sender);
}
public void MoveToDocMenu(UIButton sender)
{
UIDocumentMenuViewController vc = new UIDocumentMenuViewController (documentURL, UIDocumentPickerMode.MoveToService);
SetupDelegateThenPresent (vc, sender);
}
public void WasCancelled(UIDocumentMenuViewController documentMenu)
{
var tcs = Interlocked.Exchange(ref _completionSource, null);
tcs?.SetResult(null);
}
