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103 lines
3.1 KiB
Python
103 lines
3.1 KiB
Python
# Copyright (c) Microsoft. All rights reserved.
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"""Text input widget with inline prompt for the harness console."""
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from __future__ import annotations
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from textual import on
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from textual.app import ComposeResult
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from textual.containers import Horizontal
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from textual.message import Message
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from textual.reactive import reactive
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from textual.widget import Widget
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from textual.widgets import Input, Label
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class HarnessTextInput(Widget):
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"""Text input widget with a prompt label on the left.
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Displays a prompt (e.g., "> ") followed by a borderless input field.
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Sits between the two mode-colored horizontal rules.
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Attributes:
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prompt: The prompt text displayed on the left (e.g., "> ").
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placeholder: Placeholder text shown when the input is empty.
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"""
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prompt: reactive[str] = reactive("> ")
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placeholder: reactive[str] = reactive("")
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class Submitted(Message):
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"""Message sent when the input is submitted.
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Attributes:
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value: The submitted text value.
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"""
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def __init__(self, value: str) -> None:
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"""Initialize the Submitted message.
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Args:
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value: The submitted text value.
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"""
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self.value = value
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super().__init__()
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def compose(self) -> ComposeResult:
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"""Compose the prompt label and input field.
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Yields:
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A horizontal container with the prompt and input field.
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"""
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with Horizontal(classes="prompt-container"):
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yield Label(self.prompt, classes="prompt-label", id="prompt-label")
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yield Input(placeholder=self.placeholder, classes="input-field", id="input-field")
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def watch_prompt(self, new_prompt: str) -> None:
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"""Update the prompt label when the prompt attribute changes.
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Args:
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new_prompt: The new prompt text.
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"""
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try:
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label = self.query_one("#prompt-label", Label)
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label.update(new_prompt)
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except Exception:
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pass
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def watch_placeholder(self, new_placeholder: str) -> None:
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"""Update the input placeholder when the placeholder attribute changes.
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Args:
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new_placeholder: The new placeholder text.
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"""
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try:
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input_field = self.query_one("#input-field", Input)
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input_field.placeholder = new_placeholder
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except Exception:
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# Input doesn't exist yet (before compose), ignore
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pass
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@on(Input.Submitted)
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def on_input_submitted(self, event: Input.Submitted) -> None:
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"""Handle input submission.
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Clears the input field and posts a Submitted message with the value.
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Args:
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event: The Input.Submitted event.
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"""
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value = event.value
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event.input.clear()
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self.post_message(self.Submitted(value))
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def focus_input(self) -> None:
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"""Focus the input field."""
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input_field = self.query_one(".input-field", Input)
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input_field.focus()
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def clear_input(self) -> None:
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"""Clear the input field."""
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input_field = self.query_one(".input-field", Input)
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input_field.clear()
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