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widget: add Editor.Filter for filtering unwanted characters

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2022-07-26 15:22:27 +02:00
parent 0f51cb9084
commit f7bc744a24
2 changed files with 48 additions and 5 deletions
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widget/editor_test.go
+31
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@@ -1036,6 +1036,37 @@ func TestEditor_MaxLen(t *testing.T) {
}
}
func TestEditor_Filter(t *testing.T) {
e := new(Editor)
e.Filter = "123456789"
e.SetText("abcde1234")
if got, want := e.Text(), "1234"; got != want {
t.Errorf("editor failed to filter SetText")
}
e.SetText("2345678")
gtx := layout.Context{
Ops: new(op.Ops),
Constraints: layout.Exact(image.Pt(100, 100)),
Queue: newQueue(
key.EditEvent{Range: key.Range{Start: 0, End: 0}, Text: "ab1"},
key.SelectionEvent{Start: 4, End: 4},
),
}
cache := text.NewCache(gofont.Collection())
fontSize := unit.Sp(10)
font := text.Font{}
e.Layout(gtx, cache, font, fontSize, nil)
if got, want := e.Text(), "12345678"; got != want {
t.Errorf("editor failed to filter EditEvent")
}
if start, end := e.Selection(); start != 2 || end != 2 {
t.Errorf("editor failed to adjust SelectionEvent")
}
}
func textWidth(e *Editor, lineNum, colStart, colEnd int) float32 {
var w fixed.Int26_6
glyphs := e.lines[lineNum].Layout.Glyphs