Files
Terminal.Gui/UnitTests/Views/ScrollViewTests.cs

526 lines
18 KiB
C#

using NStack;
using Xunit;
using Xunit.Abstractions;
namespace Terminal.Gui.ViewTests {
public class ScrollViewTests {
readonly ITestOutputHelper output;
public ScrollViewTests (ITestOutputHelper output)
{
this.output = output;
}
[Fact]
public void Constructors_Defaults ()
{
var sv = new ScrollView ();
Assert.Equal (LayoutStyle.Computed, sv.LayoutStyle);
Assert.True (sv.CanFocus);
Assert.Equal (new Rect (0, 0, 0, 0), sv.Frame);
Assert.Equal (Rect.Empty, sv.Frame);
Assert.Null (sv.X);
Assert.Null (sv.Y);
Assert.Null (sv.Width);
Assert.Null (sv.Height);
Assert.Equal (Point.Empty, sv.ContentOffset);
Assert.Equal (Size.Empty, sv.ContentSize);
Assert.True (sv.AutoHideScrollBars);
Assert.True (sv.KeepContentAlwaysInViewport);
sv = new ScrollView (new Rect (1, 2, 20, 10));
Assert.Equal (LayoutStyle.Absolute, sv.LayoutStyle);
Assert.True (sv.CanFocus);
Assert.Equal (new Rect (1, 2, 20, 10), sv.Frame);
Assert.Null (sv.X);
Assert.Null (sv.Y);
Assert.Null (sv.Width);
Assert.Null (sv.Height);
Assert.Equal (Point.Empty, sv.ContentOffset);
Assert.Equal (Size.Empty, sv.ContentSize);
Assert.True (sv.AutoHideScrollBars);
Assert.True (sv.KeepContentAlwaysInViewport);
}
[Fact]
public void Adding_Views ()
{
var sv = new ScrollView (new Rect (0, 0, 20, 10)) {
ContentSize = new Size (30, 20)
};
sv.Add (new View () { Width = 10, Height = 5 },
new View () { X = 12, Y = 7, Width = 10, Height = 5 });
Assert.Equal (new Size (30, 20), sv.ContentSize);
Assert.Equal (2, sv.Subviews [0].Subviews.Count);
}
[Fact]
public void KeyBindings_Command ()
{
var sv = new ScrollView (new Rect (0, 0, 20, 10)) {
ContentSize = new Size (40, 20)
};
sv.Add (new View () { Width = 20, Height = 5 },
new View () { X = 22, Y = 7, Width = 10, Height = 5 });
Assert.True (sv.KeepContentAlwaysInViewport);
Assert.True (sv.AutoHideScrollBars);
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -1), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent ((Key)'v' | Key.AltMask, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.V | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorLeft, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorRight, new KeyModifiers ())));
Assert.Equal (new Point (-1, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorLeft, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageUp | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorRight, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home, new KeyModifiers ())));
Assert.Equal (new Point (-20, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.Home, new KeyModifiers ())));
Assert.Equal (new Point (-20, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.End, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.End, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.Home | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.End | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.End | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-20, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home, new KeyModifiers ())));
Assert.Equal (new Point (-20, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
sv.KeepContentAlwaysInViewport = false;
Assert.False (sv.KeepContentAlwaysInViewport);
Assert.True (sv.AutoHideScrollBars);
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -1), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageUp, new KeyModifiers ())));
Assert.Equal (new Point (0, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -10), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorDown, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent ((Key)'v' | Key.AltMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -9), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.V | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorLeft, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorRight, new KeyModifiers ())));
Assert.Equal (new Point (-1, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.CursorLeft, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageUp | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-20, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageDown | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-39, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.PageDown | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-39, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.CursorRight, new KeyModifiers ())));
Assert.Equal (new Point (-39, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.PageUp | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-19, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home, new KeyModifiers ())));
Assert.Equal (new Point (-19, 0), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.Home, new KeyModifiers ())));
Assert.Equal (new Point (-19, 0), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.End, new KeyModifiers ())));
Assert.Equal (new Point (-19, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.End, new KeyModifiers ())));
Assert.Equal (new Point (-19, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.Home | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.Home | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (0, -19), sv.ContentOffset);
Assert.True (sv.ProcessKey (new KeyEvent (Key.End | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-39, -19), sv.ContentOffset);
Assert.False (sv.ProcessKey (new KeyEvent (Key.End | Key.CtrlMask, new KeyModifiers ())));
Assert.Equal (new Point (-39, -19), sv.ContentOffset);
}
[Fact, AutoInitShutdown]
public void AutoHideScrollBars_ShowHorizontalScrollIndicator_ShowVerticalScrollIndicator ()
{
var sv = new ScrollView {
Width = 10,
Height = 10
};
Application.Top.Add (sv);
Application.Begin (Application.Top);
Assert.True (sv.AutoHideScrollBars);
Assert.False (sv.ShowHorizontalScrollIndicator);
Assert.False (sv.ShowVerticalScrollIndicator);
TestHelpers.AssertDriverContentsWithFrameAre ("", output);
sv.AutoHideScrollBars = false;
sv.ShowHorizontalScrollIndicator = true;
sv.ShowVerticalScrollIndicator = true;
sv.Redraw (sv.Bounds);
TestHelpers.AssertDriverContentsWithFrameAre (@"
◄├─────┤►
", output);
}
[Fact, AutoInitShutdown]
public void ContentSize_AutoHideScrollBars_ShowHorizontalScrollIndicator_ShowVerticalScrollIndicator ()
{
var sv = new ScrollView {
Width = 10,
Height = 10,
ContentSize = new Size (50, 50)
};
Application.Top.Add (sv);
Application.Begin (Application.Top);
Assert.Equal (50, sv.ContentSize.Width);
Assert.Equal (50, sv.ContentSize.Height);
Assert.True (sv.AutoHideScrollBars);
Assert.True (sv.ShowHorizontalScrollIndicator);
Assert.True (sv.ShowVerticalScrollIndicator);
TestHelpers.AssertDriverContentsWithFrameAre (@"
◄├┤░░░░░►
", output);
}
[Fact, AutoInitShutdown]
public void ContentOffset_ContentSize_AutoHideScrollBars_ShowHorizontalScrollIndicator_ShowVerticalScrollIndicator ()
{
var sv = new ScrollView {
Width = 10,
Height = 10,
ContentSize = new Size (50, 50),
ContentOffset = new Point (25, 25)
};
Application.Top.Add (sv);
Application.Begin (Application.Top);
Assert.Equal (-25, sv.ContentOffset.X);
Assert.Equal (-25, sv.ContentOffset.Y);
Assert.Equal (50, sv.ContentSize.Width);
Assert.Equal (50, sv.ContentSize.Height);
Assert.True (sv.AutoHideScrollBars);
Assert.True (sv.ShowHorizontalScrollIndicator);
Assert.True (sv.ShowVerticalScrollIndicator);
TestHelpers.AssertDriverContentsWithFrameAre (@"
◄░░░├─┤░►
", output);
}
[Fact, AutoInitShutdown]
public void Frame_And_Labels_Does_Not_Overspill_ScrollView ()
{
var sv = new ScrollView {
X = 3,
Y = 3,
Width = 10,
Height = 10,
ContentSize = new Size (50, 50)
};
for (int i = 0; i < 8; i++) {
sv.Add (new CustomButton ("█", $"Button {i}", 20, 3) { Y = i * 3 });
}
Application.Top.Add (sv);
Application.Begin (Application.Top);
TestHelpers.AssertDriverContentsWithFrameAre (@"
█████████▲
██████But┬
█████████┴
┌────────░
│ But░
└────────░
┌────────░
│ But░
└────────▼
◄├┤░░░░░► ", output);
sv.ContentOffset = new Point (5, 5);
Application.Refresh ();
TestHelpers.AssertDriverContentsWithFrameAre (@"
─────────▲
─────────┬
Button 2│
─────────┴
─────────░
Button 3░
─────────░
─────────░
Button 4▼
◄├─┤░░░░► ", output);
}
private class CustomButton : FrameView {
private Label labelFill;
private Label labelText;
public CustomButton (string fill, ustring text, int width, int height)
{
Width = width;
Height = height;
labelFill = new Label () { AutoSize = false, Width = Dim.Fill (), Height = Dim.Fill (), Visible = false };
var fillText = new System.Text.StringBuilder ();
for (int i = 0; i < Bounds.Height; i++) {
if (i > 0) {
fillText.AppendLine ("");
}
for (int j = 0; j < Bounds.Width; j++) {
fillText.Append (fill);
}
}
labelFill.Text = fillText.ToString ();
labelText = new Label (text) { X = Pos.Center (), Y = Pos.Center () };
Add (labelFill, labelText);
CanFocus = true;
}
public override bool OnEnter (View view)
{
Border.BorderStyle = BorderStyle.None;
Border.DrawMarginFrame = false;
labelFill.Visible = true;
view = this;
return base.OnEnter (view);
}
public override bool OnLeave (View view)
{
Border.BorderStyle = BorderStyle.Single;
Border.DrawMarginFrame = true;
labelFill.Visible = false;
if (view == null)
view = this;
return base.OnLeave (view);
}
}
[Fact, AutoInitShutdown]
public void Clear_Window_Inside_ScrollView ()
{
var topLabel = new Label ("At 15,0") { X = 15 };
var sv = new ScrollView {
X = 3,
Y = 3,
Width = 10,
Height = 10,
ContentSize = new Size (23, 23),
KeepContentAlwaysInViewport = false
};
var bottomLabel = new Label ("At 15,15") { X = 15, Y = 15 };
Application.Top.Add (topLabel, sv, bottomLabel);
Application.Begin (Application.Top);
TestHelpers.AssertDriverContentsWithFrameAre (@"
At 15,0
◄├┤░░░░░►
At 15,15", output);
var attributes = new Attribute [] {
Colors.TopLevel.Normal,
Colors.TopLevel.Focus,
Colors.Base.Normal
};
TestHelpers.AssertDriverColorsAre (@"
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00011111111110000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000", attributes);
sv.Add (new Window ("1") { X = 3, Y = 3, Width = 20, Height = 20 });
Application.Refresh ();
TestHelpers.AssertDriverContentsWithFrameAre (@"
At 15,0
┌ 1 ──░
│ ░
│ ░
│ ░
│ ░
│ ▼
◄├┤░░░░░►
At 15,15", output);
TestHelpers.AssertDriverColorsAre (@"
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000022222210000000000
00000022222210000000000
00000022222210000000000
00000022222210000000000
00000022222210000000000
00000022222210000000000
00011111111110000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000", attributes);
sv.ContentOffset = new Point (20, 20);
Application.Refresh ();
TestHelpers.AssertDriverContentsWithFrameAre (@"
At 15,0
│ ▲
│ ░
──┘ ░
◄░░░░├─┤►
At 15,15", output);
TestHelpers.AssertDriverColorsAre (@"
00000000000000000000000
00000000000000000000000
00000000000000000000000
00022200000010000000000
00022200000010000000000
00022200000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00000000000010000000000
00011111111110000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000", attributes);
}
[Fact, AutoInitShutdown]
public void Remove_Added_View_Is_Allowed ()
{
var sv = new ScrollView () {
Width = 20,
Height = 20,
ContentSize = new Size (100, 100)
};
sv.Add (new View () { Width = Dim.Fill (), Height = Dim.Fill (50), Id = "View1" },
new View () { Y = 51, Width = Dim.Fill (), Height = Dim.Fill (), Id = "View2" });
Application.Top.Add (sv);
Application.Begin (Application.Top);
Assert.Equal (3, sv.Subviews.Count);
Assert.Equal (2, sv.Subviews [0].Subviews.Count);
sv.Remove (sv.Subviews [0].Subviews [1]);
Assert.Equal (3, sv.Subviews.Count);
Assert.Single (sv.Subviews [0].Subviews);
Assert.Equal ("View1", sv.Subviews [0].Subviews [0].Id);
}
}
}