public void CreatePlaceholder()
{
var element = Element as ExtendedEditorControl;
_placeholderLabel = new UILabel
{
Text = element?.Placeholder,
TextColor = element.PlaceholderColor.ToUIColor(),
BackgroundColor = UIColor.Clear
};
var edgeInsets = Control.TextContainerInset;
var lineFragmentPadding = Control.TextContainer.LineFragmentPadding;
Control.AddSubview(_placeholderLabel);
var vConstraints = NSLayoutConstraint.FromVisualFormat(
"V:|-" + edgeInsets.Top + "-[PlaceholderLabel]-" + edgeInsets.Bottom + "-|", 0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("PlaceholderLabel") })
);
var hConstraints = NSLayoutConstraint.FromVisualFormat(
"H:|-" + lineFragmentPadding + "-[PlaceholderLabel]-" + lineFragmentPadding + "-|",
0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("PlaceholderLabel") })
);
_placeholderLabel.TranslatesAutoresizingMaskIntoConstraints = false;
Control.AddConstraints(hConstraints);
Control.AddConstraints(vConstraints);
}
void CreatePlaceholderLabel()
{
if (Control == null)
{
return;
}
Control.AddSubview(_placeholderLabel);
var edgeInsets = TextView.TextContainerInset;
var lineFragmentPadding = TextView.TextContainer.LineFragmentPadding;
var vConstraints = NSLayoutConstraint.FromVisualFormat(
"V:|-" + edgeInsets.Top + "-[_placeholderLabel]-" + edgeInsets.Bottom + "-|", 0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("_placeholderLabel") })
);
var hConstraints = NSLayoutConstraint.FromVisualFormat(
"H:|-" + lineFragmentPadding + "-[_placeholderLabel]-" + lineFragmentPadding + "-|",
0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("_placeholderLabel") })
);
_placeholderLabel.TranslatesAutoresizingMaskIntoConstraints = false;
_placeholderLabel.AttributedText = _placeholderLabel.AttributedText.AddCharacterSpacing(Element.Placeholder, Element.CharacterSpacing);
Control.AddConstraints(hConstraints);
Control.AddConstraints(vConstraints);
}
void CreatePlaceholderLabel()
{
try {
_placeholderLabel = new UILabel
{
BackgroundColor = UIColor.Clear,
Font = UIFont.FromName(ElementEx.FontFamily, (nfloat)ElementEx.FontSize)
};
UpdatePlaceholder();
UpdatePlaceholderColor();
_placeholderLabel.SizeToFit();
Control.AddSubview(_placeholderLabel);
Control.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints();
Control.AddConstraints
(
_placeholderLabel.AtLeftOf(Control, 7),
_placeholderLabel.WithSameCenterY(Control)
);
Control.LayoutIfNeeded();
_placeholderLabel.Hidden = Control.HasText;
}
catch (Exception ex)
{
var message = ex.Message;
}
}
void createLabel()
{
_placeholderLabel = new UILabel
{
BackgroundColor = UIColor.Clear,
};
Control.AddSubview(_placeholderLabel);
var edgeInsets = Control.TextContainerInset;
var lineFragmentPadding = Control.TextContainer.LineFragmentPadding;
var vConstraints = NSLayoutConstraint.FromVisualFormat(
"V:|-" + edgeInsets.Top + "-[_placeholderLabel]-" + edgeInsets.Bottom + "-|", 0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("_placeholderLabel") }));
var hConstraints = NSLayoutConstraint.FromVisualFormat(
"H:|-" + lineFragmentPadding + "-[_placeholderLabel]-" + lineFragmentPadding + "-|",
0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { _placeholderLabel }, new NSObject[] { new NSString("_placeholderLabel") })
);
_placeholderLabel.TranslatesAutoresizingMaskIntoConstraints = false;
Control.AddConstraints(hConstraints);
Control.AddConstraints(vConstraints);
}
protected override void OnElementChanged(ElementChangedEventArgs <Editor> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
Control.ScrollEnabled = false;
Control.TintColor = UIColor.FromRGB(199, 175, 149);
// Control.TextColor = editor.TextColor.ToUIColor();
SetCharacterSpacing(e.NewElement as ExtendedEditor);
SetColor(Element as ExtendedEditor);
SetDefaultSettingColor(Element as ExtendedEditor);
}
if (PlaceholderLabel != null)
{
return;
}
var element = Element as ExtendedEditor;
PlaceholderLabel = new PaddedLabel(element.PaddingTop, element.PaddingLeft, element.PaddingRight, element.PaddingBottom);
PlaceholderLabel.Text = element?.Placeholder;
PlaceholderLabel.TextColor = element?.PlaceholderColor.ToUIColor();
PlaceholderLabel.BackgroundColor = UIColor.Clear;
var edgeInsets = Control.TextContainerInset;
var lineFragmentPadding = Control.TextContainer.LineFragmentPadding;
Control.AddSubview(PlaceholderLabel);
var vConstraints = NSLayoutConstraint.FromVisualFormat(
"V:|-" + edgeInsets.Top + "-[PlaceholderLabel]-" + edgeInsets.Bottom + "-|", 0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { PlaceholderLabel }, new NSObject[] { new NSString("PlaceholderLabel") })
);
var hConstraints = NSLayoutConstraint.FromVisualFormat(
"H:|-" + lineFragmentPadding + "-[PlaceholderLabel]-" + lineFragmentPadding + "-|",
0, new NSDictionary(),
NSDictionary.FromObjectsAndKeys(
new NSObject[] { PlaceholderLabel }, new NSObject[] { new NSString("PlaceholderLabel") })
);
PlaceholderLabel.TranslatesAutoresizingMaskIntoConstraints = false;
Control.AddConstraints(hConstraints);
Control.AddConstraints(vConstraints);
}
