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using System;
using System.Collections.Generic;
using System.Diagnostics;
using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
using System.Linq;
#if UITEST
using Xamarin.Forms.Core.UITests;
using Xamarin.UITest;
using NUnit.Framework;
#endif
namespace Xamarin.Forms.Controls.Issues
{
#if UITEST
[Category(UITestCategories.InputTransparent)]
#endif
[Preserve(AllMembers = true)]
[Issue(IssueTracker.None, 618, "Transparent Overlays", PlatformAffected.All)]
public class TransparentOverlayTests : TestNavigationPage
{
readonly Color _transparentColor = Color.Transparent;
readonly Color _nontransparentColor = Color.Blue;
double _transparentOpacity = 0;
double _nonTransparentOpacity = 0.2;
const string Running = "Running...";
const string Success = "Success";
const string Failure = "Failure";
const string DefaultButtonText = "Button";
const string Overlay = "overlay";
const string AddOverlay = "Add Overlay";
protected override void Init()
{
PushAsync(Menu());
}
ContentPage Menu()
{
var layout = new StackLayout();
layout.Children.Add(new Label {Text = "Select a test below"});
foreach (var test in GenerateTests)
{
layout.Children.Add(MenuButton(test));
}
return new ContentPage { Content = layout };
}
Button MenuButton(TestPoint test)
{
var button = new Button { Text = test.ToString(), AutomationId = test.AutomationId };
button.Clicked += (sender, args) => PushAsync(CreateTestPage(test));
return button;
}
[Preserve(AllMembers = true)]
public struct TestPoint
{
public TestPoint(int i) : this()
{
AutomationId = $"transparenttest{i}";
Opacity = (i & (1 << 0)) == 0;
InputTransparent = (i & (1 << 1)) == 0;
BackgroundColor = (i & (1 << 2)) == 0;
// Layouts should be input transparent _only_ if they were explicitly told to be
ShouldBeTransparent = InputTransparent;
}
internal string AutomationId { get; set; }
internal bool ShouldBeTransparent { get; set; }
internal bool Opacity { get; set; }
internal bool InputTransparent { get; set; }
internal bool BackgroundColor { get; set; }
public override string ToString()
{
return $"O{(Opacity ? "1" : "0")}, B{(BackgroundColor ? "1" : "0")}, I{(InputTransparent ? "1" : "0")}";
}
}
static IEnumerable<TestPoint> GenerateTests
{
get { return Enumerable.Range(0, 8).Select(i => new TestPoint(i)); }
}
ContentPage CreateTestPage(TestPoint test)
{
Color backgroundColor = test.BackgroundColor? _transparentColor : _nontransparentColor;
double opacity = test.Opacity ? _transparentOpacity : _nonTransparentOpacity;
bool inputTransparent = test.InputTransparent;
var grid = new Grid
{
AutomationId = "testgrid",
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.Fill
};
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Star });
var instructions = new Label
{
HorizontalOptions = LayoutOptions.Fill,
HorizontalTextAlignment = TextAlignment.Center,
Text = $"Tap the 'Add Overlay' button, then tap the button labeled 'Button'."
+ (test.ShouldBeTransparent
? $" If the label below's text changes to {Success} the test has passed."
: " If the label below's text remains unchanged, the test has passed.")
};
grid.Children.Add(instructions);
var results = new Label
{
HorizontalOptions = LayoutOptions.Fill,
HorizontalTextAlignment = TextAlignment.Center,
Text = Running
};
grid.Children.Add(results);
Grid.SetRow(results, 1);
var button = new Button
{
Text = DefaultButtonText,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
};
button.Clicked += (sender, args) =>
{
results.Text = test.ShouldBeTransparent ? Success : Failure;
};
var layout = new StackLayout
{
AutomationId = Overlay,
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.Fill,
BackgroundColor = backgroundColor,
InputTransparent = inputTransparent,
Opacity = opacity
};
grid.Children.Add(button);
Grid.SetRow(button, 3);
var addOverlayButton = new Button() { Text = AddOverlay };
addOverlayButton.Clicked += (sender, args) =>
{
grid.Children.Add(layout);
Grid.SetRow(layout, 3);
};
grid.Children.Add(addOverlayButton);
Grid.SetRow(addOverlayButton, 2);
return new ContentPage { Content = grid, Title = test.ToString()};
}
#if UITEST
[Test, TestCaseSource(nameof(GenerateTests))]
public void VerifyInputTransparent(TestPoint test)
{
RunningApp.WaitForElement(q => q.Marked(test.AutomationId));
RunningApp.Tap(test.AutomationId);
// Determine the location of the button; we have to do this before adding the overlay because
// otherwise the iOS UI tests won't be able to find it consistently
var button = RunningApp.WaitForElement(DefaultButtonText);
var coords = new Tuple<float, float>(button[0].Rect.CenterX, button[0].Rect.CenterY);
// Add the overlay
RunningApp.WaitForElement(AddOverlay);
RunningApp.Tap(AddOverlay);
// Now tap the screen at the Button's location
// We can't do RunningApp.Tap(DefaultButtonText) because the UI tests on iOS can't see it
RunningApp.TapCoordinates(coords.Item1, coords.Item2);
// Check the results
RunningApp.WaitForElement(test.ShouldBeTransparent ? Success : Running);
}
#endif
}
}
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