IndexedPosition GetPosition(UITextRange range, UITextLayoutDirection direction)
{
// Note that this sample assumes LTR text direction
IndexedRange r = (IndexedRange)range;
int pos = r.Range.Location;
// For this sample, we just return the extent of the given range if the
// given direction is "forward" in a LTR context (UITextLayoutDirectionRight
// or UITextLayoutDirectionDown), otherwise we return just the range position
switch (direction)
{
case UITextLayoutDirection.Up:
case UITextLayoutDirection.Left:
pos = r.Range.Location;
break;
case UITextLayoutDirection.Right:
case UITextLayoutDirection.Down:
pos = r.Range.Location + r.Range.Length;
break;
}
// Return text position using our UITextPosition implementation.
// Note that position is not currently checked against document range.
return(IndexedPosition.GetPosition(pos));
}
public (int, int) GetSelection()
{
if (editText == null)
{
return(0, 0);
}
if (NSThread.IsMain)
{
UITextRange selectedRange = editText.SelectedTextRange;
if (selectedRange == null)
{
return(0, 0);
}
else
{
int start = (int)editText.GetOffsetFromPosition(editText.BeginningOfDocument, selectedRange.Start);
int end = (int)editText.GetOffsetFromPosition(editText.BeginningOfDocument, selectedRange.End);
return(start, end);
}
}
else
{
return(BeginInvokeOnMainThreadAsync(() => { return GetSelection(); }).Result);
}
}
void ReplaceRange(UITextRange range, string text)
{
IndexedRange r = (IndexedRange)range;
NSRange selectedNSRange = textView.SelectedTextRange;
// Determine if replaced range intersects current selection range
// and update selection range if so.
if (r.Range.Location + r.Range.Length <= selectedNSRange.Location)
{
// This is the easy case.
selectedNSRange.Location -= (r.Range.Length - text.Length);
}
else
{
// Need to also deal with overlapping ranges. Not addressed
// in this simplified sample.
}
// Now replace characters in text storage
this.text.Remove(r.Range.Location, r.Range.Length);
this.text.Insert(r.Range.Location, text);
// Update underlying SimpleCoreTextView
textView.Text = this.text.ToString();
textView.SelectedTextRange = selectedNSRange;
}
public override void Presented(UIAlertView alertView)
{
UITextRange textRange = alertView.GetTextField(0).SelectedTextRange;
alertView.GetTextField(0).SelectAll(null);
alertView.GetTextField(0).SelectedTextRange = textRange;
}
public bool ShouldChangeTextWithReplacementText(UITextView textView, NSRange range, string text)
{
if (text != "\n")
{
return(true);
}
// Get the replacement range of the UITextView
UITextPosition beginning = BeginningOfDocument;
UITextPosition start = GetPosition(beginning, range.Location);
UITextPosition end = GetPosition(start, range.Length);
UITextRange textRange = GetTextRange(start, end);
string sufix = FindIdentationPrefixWithRange(start);
if (string.IsNullOrEmpty(sufix))
{
return(true);
}
string identation = "\n" + sufix;
// Insert that newline character *and* a tab
// at the point at which the user inputted just the
// newline character
ReplaceText(textRange, identation);
// Update the cursor position accordingly
NSRange cursor = new NSRange(range.Location + identation.Length, 0);
SelectedRange = cursor;
return(false);
}
public override bool ShouldChangeTextInRange(UITextRange inRange, string replacementText)
{
if (replacementText.Equals("\n"))
{
this.ResignFirstResponder();
}
return(base.ShouldChangeTextInRange(inRange, replacementText));
}
RectangleF FirstRect(UITextRange range)
{
// FIXME: the Objective-C code doesn't get a null range
// This is the reason why we don't get the autocorrection suggestions
// (it'll just autocorrect without showing any suggestions).
// Possibly due to http://bugzilla.xamarin.com/show_bug.cgi?id=265
IndexedRange r = (IndexedRange)(range ?? IndexedRange.GetRange(new NSRange(0, 1)));
// Use underlying SimpleCoreTextView to get rect for range
RectangleF rect = textView.FirstRect(r.Range);
// Convert rect to our view coordinates
return(ConvertRectFromView(rect, textView));
}
RectangleF FirstRect (UITextRange range)
{
// FIXME: the Objective-C code doesn't get a null range
// This is the reason why we don't get the autocorrection suggestions
// (it'll just autocorrect without showing any suggestions).
// Possibly due to http://bugzilla.xamarin.com/show_bug.cgi?id=265
IndexedRange r = (IndexedRange) (range ?? IndexedRange.GetRange (new NSRange (0, 1)));
// Use underlying SimpleCoreTextView to get rect for range
RectangleF rect = textView.FirstRect (r.Range);
// Convert rect to our view coordinates
return ConvertRectFromView (rect, textView);
}
void SetBaseWritingDirection (UITextWritingDirection writingDirection, UITextRange range)
{
// This sample assumes LTR text direction and does not currently support BiDi or RTL.
}
IndexedPosition GetPosition (UITextRange range, UITextLayoutDirection direction)
{
// Note that this sample assumes LTR text direction
IndexedRange r = (IndexedRange) range;
int pos = r.Range.Location;
// For this sample, we just return the extent of the given range if the
// given direction is "forward" in a LTR context (UITextLayoutDirectionRight
// or UITextLayoutDirectionDown), otherwise we return just the range position
switch (direction) {
case UITextLayoutDirection.Up:
case UITextLayoutDirection.Left:
pos = r.Range.Location;
break;
case UITextLayoutDirection.Right:
case UITextLayoutDirection.Down:
pos = r.Range.Location + r.Range.Length;
break;
}
// Return text position using our UITextPosition implementation.
// Note that position is not currently checked against document range.
return IndexedPosition.GetPosition (pos);
}
void ReplaceRange (UITextRange range, string text)
{
IndexedRange r = (IndexedRange) range;
NSRange selectedNSRange = textView.SelectedTextRange;
// Determine if replaced range intersects current selection range
// and update selection range if so.
if (r.Range.Location + r.Range.Length <= selectedNSRange.Location) {
// This is the easy case.
selectedNSRange.Location -= (r.Range.Length - text.Length);
} else {
// Need to also deal with overlapping ranges. Not addressed
// in this simplified sample.
}
// Now replace characters in text storage
this.text.Remove (r.Range.Location, r.Range.Length);
this.text.Insert (r.Range.Location, text);
// Update underlying SimpleCoreTextView
textView.Text = this.text.ToString ();
textView.SelectedTextRange = selectedNSRange;
}
string TextInRange (UITextRange range)
{
IndexedRange r = (IndexedRange) range;
return text.ToString ().Substring (r.Range.Location, r.Range.Length);
}
public void Select(int start, int length) => SelectedTextRange = this.GetTextRange(start: start, end: start + length);
UITextPosition ClosestPosition(PointF point, UITextRange range)
{
// Not implemented in this sample. Could utilize underlying
// SimpleCoreTextView:closestIndexToPoint:point
return(null);
}
// Remove selection
public override UITextSelectionRect[] GetSelectionRects(UITextRange range)
{
return(null);
}
string TextInRange(UITextRange range)
{
throw new NotImplementedException();
}
UITextPosition ClosestPosition (PointF point, UITextRange range)
{
// Not implemented in this sample. Could utilize underlying
// SimpleCoreTextView:closestIndexToPoint:point
return null;
}
string TextInRange(UITextRange range)
{
IndexedRange r = (IndexedRange)range;
return(text.ToString().Substring(r.Range.Location, r.Range.Length));
}
UITextPosition ClosestPosition(PointF point, UITextRange range)
{
return(null);
}
RectangleF FirstRect(UITextRange range)
{
throw new NotImplementedException();
}
IndexedPosition GetPosition(UITextRange range, UITextLayoutDirection direction)
{
throw new NotImplementedException();
}
void ReplaceRange(UITextRange range, string text)
{
throw new NotImplementedException();
}
void SetBaseWritingDirection(UITextWritingDirection writingDirection, UITextRange range)
{
// This sample assumes LTR text direction and does not currently support BiDi or RTL.
}
void SetupPlaceViews()
{
ccText.Text = "11112222333344445555";
UITextPosition start = ccText.BeginningOfDocument;
UITextPosition end = ccText.GetPosition(start, 20);
UITextRange range = ccText.GetTextRange(start, end);
RectangleF r = ccText.GetFirstRectForRange(range);
SizeF frameRect = r.Size;
frameRect.Width = (r.Size.Width / 24.0f);
ccText.Font = JudoSDKManager.FIXED_WIDTH_FONT_SIZE_20;
r.Size = frameRect;
ccText.Text = "";
RectangleF frame = ccPlaceHolder.Frame;
ccPlaceHolder.Font = JudoSDKManager.FIXED_WIDTH_FONT_SIZE_20;
ccPlaceHolder.Text = "0000 0000 0000 0000";
ccPlaceHolder.SetShowTextOffSet(0);
ccPlaceHolder.Offset = r;
ccPlaceHolder.BackgroundColor = UIColor.Clear;
textScroller.InsertSubview(ccPlaceHolder, 0);
/////////
expiryText.Text = "MM/YY";
UITextPosition exStart = expiryText.BeginningOfDocument;
UITextPosition exEnd = expiryText.GetPosition(exStart, 5);
UITextRange exRange = expiryText.GetTextRange(exStart, exEnd);
RectangleF exR = expiryText.GetFirstRectForRange(exRange);
SizeF exFrameRect = exR.Size;
exFrameRect.Width = (exR.Size.Width / 24.0f);
expiryText.Font = JudoSDKManager.FIXED_WIDTH_FONT_SIZE_20;
exR.Size = exFrameRect;
expiryText.Text = "";
RectangleF expiryFrame = expiryPlaceHolder.Frame;
expiryPlaceHolder.Font = expiryText.Font;
expiryPlaceHolder.Text = "MM/YY";
expiryPlaceHolder.SetShowTextOffSet(0);
expiryPlaceHolder.Offset = exR;
expiryPlaceHolder.BackgroundColor = UIColor.Clear;
textScroller.InsertSubview(expiryPlaceHolder, 1);
////
cvTwoText.Text = "CV2";
UITextPosition cvStart = cvTwoText.BeginningOfDocument;
UITextPosition cvEnd = cvTwoText.GetPosition(cvStart, 3);
UITextRange cvRange = cvTwoText.GetTextRange(cvStart, cvEnd);
RectangleF cvR = cvTwoText.GetFirstRectForRange(cvRange);
SizeF cvFrameRect = cvR.Size;
cvFrameRect.Width = (cvR.Size.Width / 24.0f);
cvTwoText.Font = JudoSDKManager.FIXED_WIDTH_FONT_SIZE_20;
cvR.Size = cvFrameRect;
cvTwoText.Text = "";
RectangleF cvTwoFrame = cvTwoPlaceHolder.Frame;
cvTwoPlaceHolder.Font = cvTwoText.Font;
cvTwoPlaceHolder.Text = "CV2";
cvTwoPlaceHolder.SetShowTextOffSet(0);
cvTwoPlaceHolder.Offset = cvR;
cvTwoPlaceHolder.BackgroundColor = UIColor.Clear;
textScroller.InsertSubview(cvTwoPlaceHolder, 2);
}
