protected override void OnElementChanged(ElementChangedEventArgs <Entry> e)
{
base.OnElementChanged(e);
if (native == null)
{
source = e.NewElement as MyEntry;
native = this.Control as EntryEditText;
if (source.FormatCharacters != null && String.IsNullOrEmpty(source.Text) == false)
{
ApplyDefaultRule();
}
native.AfterTextChanged += Native_AfterTextChanged;
native.KeyPress += Native_KeyPress;
native.BeforeTextChanged += Native_BeforeTextChanged;
SetNativeControl(native);
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Entry> e)
{
base.OnElementChanged(e);
if (native == null)
{
source = e.NewElement as MyEntry;
native = this.Control as EntryEditText;
// INIT defaults
rules = source.Mask;
FormatCharacters = source.FormatCharacters.ToCharArray();
if (FormatCharacters != null && String.IsNullOrEmpty(source.Text) == false)
{
ApplyDefaultRule();
}
native.AfterTextChanged += (object sender, global::Android.Text.AfterTextChangedEventArgs e2) => {
if (pt != null && FormatCharacters != null)
{
if (pt.Start != -1)
{
if (pt.End != -1)
{
native.SetSelection(pt.Start, pt.End);
}
else
{
if (pt.Start >= native.Text.Length)
{
pt.Start = native.Text.Length;
}
else
{
var before = source.BeforeChars;
if (before == "")
{
pt.Start = 1;
}
else
{
var text = native.Text;
for (int i = 0; i < text.Length; i++)
{
string c = text[i].ToString();
if (FormatCharacters.Where(ch => ch.ToString() == c.ToString()).Count() <= 0)
{
// no placeholder1
if (before[0].ToString() == c)
{
before = before.Substring(1);
}
if (String.IsNullOrEmpty(before))
{
pt.Start = i + 1;
break;
}
}
}
}
}
native.SetSelection(pt.Start);
}
}
pt = null;
}
};
native.KeyPress += (object sender, KeyEventArgs args) => {
if (args.Event.Action == global::Android.Views.KeyEventActions.Down)
{
var len = native.Text.Length;
if (args.KeyCode == global::Android.Views.Keycode.Back ||
args.KeyCode == global::Android.Views.Keycode.Del)
{
// do test cleanup
if (source.Locked == false && source.Mask != null)
{
source.Delete = true;
args.Handled = false;
}
else if (source.MaxLength > 0)
{
args.Handled = false;
}
else
{
args.Handled = false;
}
}
else if (source.Locked == false && source.Mask != null)
{
source.Delete = false;
var start = native.SelectionStart;
if (start < len)
{
var evt = args.Event;
var act = evt.Action;
var newChar = ((char)evt.UnicodeChar).ToString();
//var newChar = ((char)args.KeyCode.ConvertToString()).ToString();
native.Text = native.Text.Insert(start, newChar);
args.Handled = true;
}
else
{
args.Handled = false;
}
}
else if (source.MaxLength > 0)
{
if (len + 1 > source.MaxLength)
{
args.Handled = true;
//source.Validate("MAX", "Max length is " + source.MaxLength);
}
else
{
args.Handled = false;
}
}
else
{
args.Handled = false;
}
}
};
native.BeforeTextChanged += (object sender, global::Android.Text.TextChangedEventArgs e2) => {
if (source.Locked == false && source.Mask != null)
{
source.SelectionStart = native.SelectionStart;
source.SelectionEnd = native.SelectionEnd;
source.TextLength = native.Text.Length;
}
else if (source.Mask == null)
{
source.SelectionStart = native.SelectionStart;
source.SelectionEnd = native.SelectionEnd;
source.TextLength = native.Text.Length;
}
};
SetNativeControl(native);
}
}