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using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
using System.Linq;
#if UITEST
using Xamarin.UITest;
using NUnit.Framework;
#endif
// Apply the default category of "Issues" to all of the tests in this assembly
// We use this as a catch-all for tests which haven't been individually categorized
#if UITEST
[assembly: NUnit.Framework.Category("Issues")]
#endif
namespace Xamarin.Forms.Controls.Issues
{
public class Bugzilla41054NumericValidationBehavior : Behavior<Entry>
{
public static readonly BindableProperty AttachBehaviorProperty =
BindableProperty.CreateAttached("AttachBehavior", typeof(bool), typeof(Bugzilla41054NumericValidationBehavior), false, propertyChanged: OnAttachBehaviorChanged);
public static bool GetAttachBehavior(BindableObject view)
{
return (bool)view.GetValue(AttachBehaviorProperty);
}
public static void SetAttachBehavior(BindableObject view, bool value)
{
view.SetValue(AttachBehaviorProperty, value);
}
static void OnAttachBehaviorChanged(BindableObject view, object oldValue, object newValue)
{
var entry = view as Entry;
if (entry == null)
{
return;
}
bool attachBehavior = (bool)newValue;
if (attachBehavior)
{
entry.Behaviors.Add(new Bugzilla41054NumericValidationBehavior());
}
else
{
var toRemove = entry.Behaviors.FirstOrDefault(b => b is Bugzilla41054NumericValidationBehavior);
if (toRemove != null)
{
entry.Behaviors.Remove(toRemove);
}
}
}
protected override void OnAttachedTo(Entry entry)
{
entry.TextChanged += OnEntryTextChanged;
base.OnAttachedTo(entry);
}
protected override void OnDetachingFrom(Entry entry)
{
entry.TextChanged -= OnEntryTextChanged;
base.OnDetachingFrom(entry);
}
void OnEntryTextChanged(object sender, TextChangedEventArgs args)
{
double result;
bool isValid = double.TryParse(args.NewTextValue, out result);
((Entry)sender).TextColor = isValid ? Color.Default : Color.Red;
}
}
[Preserve(AllMembers = true)]
[Issue(IssueTracker.Bugzilla, 41054, "Cannot update Entry.Text from attached Behavior on UWP", PlatformAffected.Default)]
public class Bugzilla41054 : TestContentPage
{
protected override void Init()
{
var entry = new Entry
{
Placeholder = "Enter a System.Double; text will be red when invalid",
PlaceholderColor = Color.Green,
};
var entry2 = new Entry
{
Placeholder = "This entry starts with blue text when typing",
TextColor = Color.Blue
};
Bugzilla41054NumericValidationBehavior.SetAttachBehavior(entry, true);
Content = new StackLayout
{
Children = {
entry,
entry2,
new Entry
{
Text = "This is an entry with some default colored text"
},
new Button
{
Text = "Change first entry placeholder color to purple",
Command = new Command(() => entry.PlaceholderColor = Color.Purple)
},
new Button
{
Text = "Change second entry text color to orange",
Command = new Command(() => entry2.TextColor = Color.Orange)
}
}
};
}
}
}
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