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67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
from textual.app import App
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from textual.screen import Screen
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from textual.widget import Widget
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class Focusable(Widget, can_focus=True):
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pass
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class NonFocusable(Widget, can_focus=False, can_focus_children=False):
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pass
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class ChildrenFocusableOnly(Widget, can_focus=False, can_focus_children=True):
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pass
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def test_focus_chain():
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app = App()
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app._set_active()
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app.push_screen(Screen())
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screen = app.screen
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# Check empty focus chain
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assert not screen.focus_chain
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app.screen._add_children(
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Focusable(id="foo"),
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NonFocusable(id="bar"),
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Focusable(Focusable(id="Paul"), id="container1"),
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NonFocusable(Focusable(id="Jessica"), id="container2"),
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Focusable(id="baz"),
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ChildrenFocusableOnly(Focusable(id="child")),
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)
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focus_chain = [widget.id for widget in screen.focus_chain]
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assert focus_chain == ["foo", "container1", "Paul", "baz", "child"]
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def test_focus_next_and_previous():
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app = App()
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app._set_active()
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app.push_screen(Screen())
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screen = app.screen
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screen._add_children(
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Focusable(id="foo"),
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NonFocusable(id="bar"),
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Focusable(Focusable(id="Paul"), id="container1"),
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NonFocusable(Focusable(id="Jessica"), id="container2"),
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Focusable(id="baz"),
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ChildrenFocusableOnly(Focusable(id="child")),
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)
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assert screen.focus_next().id == "foo"
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assert screen.focus_next().id == "container1"
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assert screen.focus_next().id == "Paul"
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assert screen.focus_next().id == "baz"
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assert screen.focus_next().id == "child"
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assert screen.focus_previous().id == "baz"
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assert screen.focus_previous().id == "Paul"
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assert screen.focus_previous().id == "container1"
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assert screen.focus_previous().id == "foo"
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