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Fixes #1327. Fixes TextField backspace and canceling TextChanging.

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BDisp
2021-05-31 15:51:20 +01:00
parent 0413a93bf3
commit 66b46851cb
2 changed files with 75 additions and 1 deletions
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67
UnitTests/TextFieldTests.cs
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@@ -706,5 +706,72 @@ namespace Terminal.Gui.Views {
_textField.ProcessKey (new KeyEvent ((Key)0x64, new KeyModifiers ())); // d
Assert.Equal ("TAB to jumusedtween text fields.", _textField.Text);
}
[Fact]
public void ProcessKey_Backspace_From_End ()
{
var tf = new TextField ("ABC");
tf.EnsureFocus ();
Assert.Equal ("ABC", tf.Text);
// now delete the C
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("AB", tf.Text);
// then delete the B
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("A", tf.Text);
// then delete the A
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("", tf.Text);
}
[Fact]
public void ProcessKey_Backspace_From_Middle ()
{
var tf = new TextField ("ABC");
tf.EnsureFocus ();
tf.CursorPosition = 2;
Assert.Equal ("ABC", tf.Text);
// now delete the B
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("AC", tf.Text);
// then delete the A
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("C", tf.Text);
// then delete nothing
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("C", tf.Text);
// now delete the C
tf.CursorPosition = 1;
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("", tf.Text);
}
[Fact]
public void Cancel_TextChanging_ThenBackspace ()
{
var tf = new TextField ();
tf.EnsureFocus ();
tf.ProcessKey (new KeyEvent (Key.A, new KeyModifiers ()));
Assert.Equal ("A", tf.Text);
// cancel the next keystroke
tf.TextChanging += (e) => e.Cancel = e.NewText == "AB";
tf.ProcessKey (new KeyEvent (Key.B, new KeyModifiers ()));
// B was canceled so should just be A
Assert.Equal ("A", tf.Text);
// now delete the A
tf.ProcessKey (new KeyEvent (Key.Backspace, new KeyModifiers ()));
Assert.Equal ("", tf.Text);
}
}
}