public override bool OnKeyDown(Keycode keyCode, KeyEvent e)
{
if (keyCode == Keycode.Enter)
{
EventHandler <EventHandledEventArgs> rkp;
if ((rkp = ReturnKeyPressed) != null)
{
var args = new EventHandledEventArgs();
rkp(Pair ?? this, args);
if (args.IsHandled)
{
return(true);
}
}
if (KeyboardReturnType > KeyboardReturnType.Next)
{
Blur(true);
}
}
try
{
return(base.OnKeyDown(keyCode, e));
}
catch (Exception ex)
{
Device.Log.Error(ex);
return(false);
}
}
public bool OnItemLongClick(AdapterView parent, View view, int position, long id)
{
var args = new EventHandledEventArgs();
var cell = view as ICell;
LongClicked?.Invoke(cell?.Pair ?? cell, args);
return(args.IsHandled);
}
public bool OnItemLongClick(AdapterView parent, View view, int position, long id)
{
Device.Log.Platform($"Cell long-clicked at position {position}");
var args = new EventHandledEventArgs();
var cell = RetrieveCell(view);
LongClicked?.Invoke(cell?.Pair ?? cell, args);
return(args.IsHandled);
}
public TextArea()
{
AcceptsReturn = true;
Padding = new System.Windows.Thickness(5);
TextWrapping = TextWrapping.Wrap;
VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
base.TextChanged += (o, e) =>
{
if (base.Text != currentValue && !(expression == null || expression.IsMatch(base.Text)))
{
base.Text = currentValue;
base.SelectionStart = currentValue.Length;
return;
}
string oldValue = currentValue;
currentValue = base.Text;
OnPropertyChanged("Text");
OnPropertyChanged("StringValue");
var handler = TextChanged;
if (handler != null)
{
handler(Pair ?? this, new ValueChangedEventArgs <string>(oldValue, currentValue));
}
};
PreviewKeyDown += (o, e) =>
{
if (e.Key == System.Windows.Input.Key.Return)
{
var handler = ReturnKeyPressed;
if (handler != null)
{
var args = new EventHandledEventArgs();
handler(pair ?? this, args);
e.Handled = args.IsHandled;
}
}
};
Loaded += (o, e) =>
{
if (setFocusOnLoad)
{
base.Focus();
}
};
}
public TextBox()
{
Padding = new System.Windows.Thickness(5);
base.TextChanged += (o, e) =>
{
if (base.Text != currentValue && !(expression == null || expression.IsMatch(base.Text)))
{
base.Text = currentValue;
base.Select(currentValue.Length, 0);
return;
}
string oldValue = currentValue;
currentValue = base.Text;
OnPropertyChanged("Text");
OnPropertyChanged("StringValue");
var handler = TextChanged;
if (handler != null)
{
handler(Pair ?? this, new ValueChangedEventArgs <string>(oldValue, currentValue));
}
};
PreviewKeyDown += (o, e) =>
{
if (e.Key == System.Windows.Input.Key.Return)
{
var handler = ReturnKeyPressed;
if (handler != null)
{
var args = new EventHandledEventArgs();
handler(pair ?? this, args);
e.Handled = args.IsHandled;
}
}
};
Loaded += (o, e) =>
{
if (setFocusOnLoad)
{
base.Focus();
}
};
}
protected override void OnKeyUp(KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
var ret = ReturnKeyPressed;
var args = new EventHandledEventArgs();
if (ret != null)
{
ret(Pair, args);
}
if (args.IsHandled)
{
e.Handled = true;
return;
}
}
base.OnKeyUp(e);
}
public TextArea()
{
base.BackgroundColor = null;
base.ShouldChangeText += delegate(UITextView textView, NSRange range, string text)
{
if (text == "\n")
{
var handler = ReturnKeyPressed;
if (handler != null)
{
var args = new EventHandledEventArgs();
handler(pair ?? this, args);
if (args.IsHandled)
{
return(false);
}
}
}
string value = currentValue ?? string.Empty;
try
{
if (range.Length == 0)
{
value = value.Insert((int)value.Length, text);
}
else
{
value = value.Replace(value.Substring((int)range.Location, (int)range.Length), text);
}
}
catch
{
value = string.Concat(value, text);
}
return(expression == null ? true : expression.IsMatch(value));
};
base.Changed += (sender, e) =>
{
if (placeholderLabel != null)
{
placeholderLabel.Alpha = string.IsNullOrEmpty(Text) ? 1 : 0;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0) && SelectedTextRange != null)
{
// iOS 7 has a bug where the caret will stay below the bounds of the box. we need to compensate for it
CGRect line = GetCaretRectForPosition(SelectedTextRange.Start);
nfloat overflow = line.Y + line.Height - (ContentOffset.Y + Bounds.Height - ContentInset.Bottom - ContentInset.Top);
if (overflow > 0)
{
var offset = ContentOffset;
offset.Y += overflow + 7;
UIView.Animate(0.2, () => { SetContentOffset(offset, true); });
}
}
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("Text"));
phandler(this, new PropertyChangedEventArgs("StringValue"));
}
var handler = TextChanged;
if (handler != null)
{
handler(Pair ?? this, new ValueChangedEventArgs <string>(currentValue, Text));
}
currentValue = Text;
};
base.Started += (sender, e) =>
{
if (SelectedTextRange != null)
{
ScrollRectToVisible(GetCaretRectForPosition(SelectedTextRange.Start), true);
}
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = GotFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
base.Ended += (sender, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = LostFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
}
public PasswordBox()
{
base.SecureTextEntry = true;
base.ClearButtonMode = UITextFieldViewMode.WhileEditing;
base.AutocapitalizationType = UITextAutocapitalizationType.None;
base.AutocorrectionType = UITextAutocorrectionType.No;
base.VerticalAlignment = UIControlContentVerticalAlignment.Center;
base.ShouldChangeCharacters += delegate(UITextField textField, NSRange range, string newString)
{
string value = currentValue ?? string.Empty;
try
{
if (range.Length == 0)
{
value = value.Insert((int)value.Length, newString);
}
else
{
value = value.Replace(value.Substring((int)range.Location, (int)range.Length), newString);
}
}
catch
{
value = string.Concat(value, newString);
}
return(expression == null ? true : expression.IsMatch(value));
};
base.EditingChanged += (sender, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("Password"));
phandler(this, new PropertyChangedEventArgs("StringValue"));
}
var handler = PasswordChanged;
if (handler != null)
{
handler(Pair ?? this, new ValueChangedEventArgs <string>(currentValue, Text));
}
currentValue = Text;
};
base.ShouldReturn += delegate
{
bool shouldReturn = true;
var handler = ReturnKeyPressed;
if (handler != null)
{
var args = new EventHandledEventArgs();
handler(pair ?? this, args);
shouldReturn = !args.IsHandled;
}
if (shouldReturn)
{
ResignFirstResponder();
return(true);
}
return(false);
};
base.EditingDidBegin += (sender, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = GotFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
base.EditingDidEnd += (sender, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = LostFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
}
public PasswordBox()
{
passwordBox = new System.Windows.Controls.PasswordBox();
passwordBox.Padding = new System.Windows.Thickness(5);
passwordBox.VerticalContentAlignment = System.Windows.VerticalAlignment.Center;
passwordBox.Tag = this;
passwordBox.PasswordChanged += (o, e) =>
{
if (passwordBox.Password == currentValue)
{
// password boxes have a peculiar behavior where the cursor is pushed to the beginning
// when used in a two-way binding. to compensate, we need to force the cursor to the end.
var select = passwordBox.GetType().GetMethod("Select", BindingFlags.Instance | BindingFlags.NonPublic);
if (select != null)
{
select.Invoke(passwordBox, new object[] { currentValue.Length, 0 });
}
return;
}
if (!(expression == null || expression.IsMatch(passwordBox.Password)))
{
passwordBox.Password = currentValue;
var select = passwordBox.GetType().GetMethod("Select", BindingFlags.Instance | BindingFlags.NonPublic);
if (select != null)
{
select.Invoke(passwordBox, new object[] { currentValue.Length, 0 });
}
return;
}
string oldValue = currentValue;
currentValue = passwordBox.Password;
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("Password"));
phandler(this, new PropertyChangedEventArgs("StringValue"));
}
var handler = PasswordChanged;
if (handler != null)
{
handler(Pair ?? this, new ValueChangedEventArgs <string>(oldValue, currentValue));
}
};
passwordBox.PreviewKeyDown += (o, e) =>
{
if (e.Key == System.Windows.Input.Key.Return)
{
var handler = ReturnKeyPressed;
if (handler != null)
{
var args = new EventHandledEventArgs();
handler(pair ?? this, args);
e.Handled = args.IsHandled;
}
}
};
passwordBox.Loaded += (o, e) =>
{
if (setFocusOnLoad)
{
passwordBox.Focus();
}
};
passwordBox.GotFocus += (o, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = GotFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
passwordBox.LostFocus += (o, e) =>
{
var phandler = PropertyChanged;
if (phandler != null)
{
phandler(this, new PropertyChangedEventArgs("IsFocused"));
}
var handler = LostFocus;
if (handler != null)
{
handler(pair ?? this, EventArgs.Empty);
}
};
}
