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Select posts Changed when value is assigned.

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Fix #3611.
This commit is contained in:
Rodrigo Girão Serrão 2023-10-30 12:02:47 +00:00
parent 3f33cd1f86
commit 9c941130bb
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GPG key ID: 84116786F3295A35
1 changed files with 6 additions and 5 deletions
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11
src/textual/widgets/_select.py
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@ -223,7 +223,7 @@ class Select(Generic[SelectType], Vertical, can_focus=True):
"""True to show the overlay, otherwise False.""" """True to show the overlay, otherwise False."""
prompt: var[str] = var[str]("Select") prompt: var[str] = var[str]("Select")
"""The prompt to show when no value is selected.""" """The prompt to show when no value is selected."""
value: var[SelectType | None] = var[Optional[SelectType]](None) value: var[SelectType | None] = var[Optional[SelectType]](None, init=False)
"""The value of the select.""" """The value of the select."""
class Changed(Message): class Changed(Message):
@ -312,16 +312,18 @@ class Select(Generic[SelectType], Vertical, can_focus=True):
pass pass
else: else:
if value is None: if value is None:
self.query_one(SelectCurrent).update(None) select_current.update(None)
else: else:
for index, (prompt, _value) in enumerate(self._options): for index, (prompt, _value) in enumerate(self._options):
if _value == value: if _value == value:
select_overlay = self.query_one(SelectOverlay) select_overlay = self.query_one(SelectOverlay)
select_overlay.highlighted = index select_overlay.highlighted = index
self.query_one(SelectCurrent).update(prompt) select_current.update(prompt)
break break
else: else:
self.query_one(SelectCurrent).update(None) select_current.update(None)
value = None # Update this so the message has the correct value.
self.post_message(self.Changed(self, value))
def compose(self) -> ComposeResult: def compose(self) -> ComposeResult:
"""Compose Select with overlay and current value.""" """Compose Select with overlay and current value."""
@ -378,7 +380,6 @@ class Select(Generic[SelectType], Vertical, can_focus=True):
self.expanded = False self.expanded = False
self.call_after_refresh(update_focus) # Prevents a little flicker self.call_after_refresh(update_focus) # Prevents a little flicker
self.post_message(self.Changed(self, value))
def action_show_overlay(self) -> None: def action_show_overlay(self) -> None:
"""Show the overlay.""" """Show the overlay."""