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using System;
using System.Threading.Tasks;
using Xamarin.Forms.CustomAttributes;
#if UITEST
using Xamarin.UITest;
using NUnit.Framework;
#endif
namespace Xamarin.Forms.Controls
{
[Preserve (AllMembers = true)]
[Issue (IssueTracker.Bugzilla, 36788, "Truncation Issues with Relative Layouts")]
public class Bugzilla36788 : TestContentPage // or TestMasterDetailPage, etc ...
{
Label _resultLabel;
Label _testLabel;
View _container;
protected override void Init ()
{
// Initialize ui here instead of ctor
var stackLayout = new StackLayout {
Spacing = 8
};
var longString = "Very long text in single line to be truncated at tail. Adding extra text to make sure it gets truncated.";
var contentView = new ContentView {
Padding = 16,
BackgroundColor = Color.Gray,
Content = new Label {
BackgroundColor = Color.Aqua,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}
};
stackLayout.Children.Add (contentView);
contentView = new ContentView {
Padding = 16,
BackgroundColor = Color.Gray,
Content = new RelativeLayout {
BackgroundColor = Color.Navy,
Children = {
{new Label {
BackgroundColor = Color.Blue,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (0)},
{new Label {
BackgroundColor = Color.Fuchsia,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (0), Forms.Constraint.Constant (40)},
{new Label {
BackgroundColor = Color.Fuchsia,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (10), Forms.Constraint.Constant (80)},
}
}
};
stackLayout.Children.Add (contentView);
contentView = new ContentView {
Padding = 16,
BackgroundColor = Color.Gray,
IsClippedToBounds = true,
Content = _container = new RelativeLayout {
IsClippedToBounds = true,
BackgroundColor = Color.Navy,
Children = {
{_testLabel = new Label {
BackgroundColor = Color.Blue,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (0)},
{new Label {
BackgroundColor = Color.Fuchsia,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (0), Forms.Constraint.Constant (40)},
{new Label {
BackgroundColor = Color.Fuchsia,
Text = longString,
LineBreakMode = LineBreakMode.TailTruncation
}, Forms.Constraint.Constant (10), Forms.Constraint.Constant (80)},
}
}
};
stackLayout.Children.Add (contentView);
_resultLabel = new Label ();
stackLayout.Children.Add (_resultLabel);
Content = stackLayout;
}
protected override async void OnAppearing ()
{
base.OnAppearing ();
await Task.Delay (200);
double fuzzFactor = 15; // labels sometimes overflow slightly, thanks hinting
if (Math.Abs (_testLabel.Width - _container.Width) < fuzzFactor)
_resultLabel.Text = "Passed";
}
#if UITEST
[Test]
public void Bugzilla36788Test ()
{
RunningApp.WaitForElement (q => q.Marked ("Passed"));
}
#endif
}
}
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