917 lines
29 KiB
Python
917 lines
29 KiB
Python
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"""
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Collection of reusable components for building full screen applications.
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All of these widgets implement the ``__pt_container__`` method, which makes
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them usable in any situation where we are expecting a `prompt_toolkit`
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container object.
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.. warning::
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At this point, the API for these widgets is considered unstable, and can
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potentially change between minor releases (we try not too, but no
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guarantees are made yet). The public API in
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`prompt_toolkit.shortcuts.dialogs` on the other hand is considered stable.
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"""
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from functools import partial
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from typing import Callable, Generic, List, Optional, Sequence, Tuple, TypeVar, Union
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from prompt_toolkit.application.current import get_app
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from prompt_toolkit.auto_suggest import AutoSuggest, DynamicAutoSuggest
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from prompt_toolkit.buffer import Buffer, BufferAcceptHandler
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from prompt_toolkit.completion import Completer, DynamicCompleter
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from prompt_toolkit.document import Document
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from prompt_toolkit.filters import (
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Condition,
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FilterOrBool,
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has_focus,
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is_done,
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is_true,
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to_filter,
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)
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from prompt_toolkit.formatted_text import (
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AnyFormattedText,
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StyleAndTextTuples,
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Template,
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to_formatted_text,
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)
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from prompt_toolkit.formatted_text.utils import fragment_list_to_text
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from prompt_toolkit.history import History
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from prompt_toolkit.key_binding.key_bindings import KeyBindings
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from prompt_toolkit.key_binding.key_processor import KeyPressEvent
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from prompt_toolkit.keys import Keys
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from prompt_toolkit.layout.containers import (
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AnyContainer,
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ConditionalContainer,
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Container,
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DynamicContainer,
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Float,
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FloatContainer,
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HSplit,
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VSplit,
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Window,
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WindowAlign,
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)
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from prompt_toolkit.layout.controls import (
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BufferControl,
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FormattedTextControl,
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GetLinePrefixCallable,
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)
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from prompt_toolkit.layout.dimension import AnyDimension
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from prompt_toolkit.layout.dimension import Dimension as D
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from prompt_toolkit.layout.dimension import to_dimension
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from prompt_toolkit.layout.margins import (
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ConditionalMargin,
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NumberedMargin,
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ScrollbarMargin,
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)
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from prompt_toolkit.layout.processors import (
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AppendAutoSuggestion,
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BeforeInput,
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ConditionalProcessor,
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PasswordProcessor,
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Processor,
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)
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from prompt_toolkit.lexers import DynamicLexer, Lexer
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from prompt_toolkit.mouse_events import MouseEvent, MouseEventType
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from prompt_toolkit.utils import get_cwidth
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from prompt_toolkit.validation import DynamicValidator, Validator
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from .toolbars import SearchToolbar
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__all__ = [
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"TextArea",
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"Label",
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"Button",
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"Frame",
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"Shadow",
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"Box",
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"VerticalLine",
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"HorizontalLine",
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"RadioList",
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"CheckboxList",
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"Checkbox", # backward compatibility
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"ProgressBar",
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]
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E = KeyPressEvent
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class Border:
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" Box drawing characters. (Thin) "
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HORIZONTAL = "\u2500"
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VERTICAL = "\u2502"
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TOP_LEFT = "\u250c"
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TOP_RIGHT = "\u2510"
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BOTTOM_LEFT = "\u2514"
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BOTTOM_RIGHT = "\u2518"
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class TextArea:
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"""
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A simple input field.
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This is a higher level abstraction on top of several other classes with
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sane defaults.
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This widget does have the most common options, but it does not intend to
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cover every single use case. For more configurations options, you can
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always build a text area manually, using a
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:class:`~prompt_toolkit.buffer.Buffer`,
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:class:`~prompt_toolkit.layout.BufferControl` and
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:class:`~prompt_toolkit.layout.Window`.
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Buffer attributes:
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:param text: The initial text.
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:param multiline: If True, allow multiline input.
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:param completer: :class:`~prompt_toolkit.completion.Completer` instance
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for auto completion.
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:param complete_while_typing: Boolean.
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:param accept_handler: Called when `Enter` is pressed (This should be a
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callable that takes a buffer as input).
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:param history: :class:`~prompt_toolkit.history.History` instance.
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:param auto_suggest: :class:`~prompt_toolkit.auto_suggest.AutoSuggest`
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instance for input suggestions.
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BufferControl attributes:
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:param password: When `True`, display using asterisks.
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:param focusable: When `True`, allow this widget to receive the focus.
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:param focus_on_click: When `True`, focus after mouse click.
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:param input_processors: `None` or a list of
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:class:`~prompt_toolkit.layout.Processor` objects.
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:param validator: `None` or a :class:`~prompt_toolkit.validation.Validator`
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object.
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Window attributes:
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:param lexer: :class:`~prompt_toolkit.lexers.Lexer` instance for syntax
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highlighting.
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:param wrap_lines: When `True`, don't scroll horizontally, but wrap lines.
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:param width: Window width. (:class:`~prompt_toolkit.layout.Dimension` object.)
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:param height: Window height. (:class:`~prompt_toolkit.layout.Dimension` object.)
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:param scrollbar: When `True`, display a scroll bar.
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:param style: A style string.
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:param dont_extend_width: When `True`, don't take up more width then the
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preferred width reported by the control.
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:param dont_extend_height: When `True`, don't take up more width then the
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preferred height reported by the control.
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:param get_line_prefix: None or a callable that returns formatted text to
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be inserted before a line. It takes a line number (int) and a
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wrap_count and returns formatted text. This can be used for
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implementation of line continuations, things like Vim "breakindent" and
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so on.
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Other attributes:
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:param search_field: An optional `SearchToolbar` object.
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"""
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def __init__(
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self,
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text: str = "",
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multiline: FilterOrBool = True,
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password: FilterOrBool = False,
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lexer: Optional[Lexer] = None,
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auto_suggest: Optional[AutoSuggest] = None,
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completer: Optional[Completer] = None,
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complete_while_typing: FilterOrBool = True,
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validator: Optional[Validator] = None,
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accept_handler: Optional[BufferAcceptHandler] = None,
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history: Optional[History] = None,
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focusable: FilterOrBool = True,
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focus_on_click: FilterOrBool = False,
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wrap_lines: FilterOrBool = True,
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read_only: FilterOrBool = False,
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width: AnyDimension = None,
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height: AnyDimension = None,
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dont_extend_height: FilterOrBool = False,
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dont_extend_width: FilterOrBool = False,
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line_numbers: bool = False,
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get_line_prefix: Optional[GetLinePrefixCallable] = None,
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scrollbar: bool = False,
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style: str = "",
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search_field: Optional[SearchToolbar] = None,
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preview_search: FilterOrBool = True,
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prompt: AnyFormattedText = "",
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input_processors: Optional[List[Processor]] = None,
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) -> None:
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if search_field is None:
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search_control = None
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elif isinstance(search_field, SearchToolbar):
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search_control = search_field.control
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if input_processors is None:
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input_processors = []
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# Writeable attributes.
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self.completer = completer
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self.complete_while_typing = complete_while_typing
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self.lexer = lexer
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self.auto_suggest = auto_suggest
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self.read_only = read_only
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self.wrap_lines = wrap_lines
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self.validator = validator
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self.buffer = Buffer(
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document=Document(text, 0),
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multiline=multiline,
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read_only=Condition(lambda: is_true(self.read_only)),
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completer=DynamicCompleter(lambda: self.completer),
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complete_while_typing=Condition(
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lambda: is_true(self.complete_while_typing)
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),
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validator=DynamicValidator(lambda: self.validator),
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auto_suggest=DynamicAutoSuggest(lambda: self.auto_suggest),
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accept_handler=accept_handler,
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history=history,
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)
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self.control = BufferControl(
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buffer=self.buffer,
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lexer=DynamicLexer(lambda: self.lexer),
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input_processors=[
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ConditionalProcessor(
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AppendAutoSuggestion(), has_focus(self.buffer) & ~is_done
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),
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ConditionalProcessor(
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processor=PasswordProcessor(), filter=to_filter(password)
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),
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BeforeInput(prompt, style="class:text-area.prompt"),
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]
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+ input_processors,
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search_buffer_control=search_control,
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preview_search=preview_search,
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focusable=focusable,
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focus_on_click=focus_on_click,
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)
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if multiline:
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if scrollbar:
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right_margins = [ScrollbarMargin(display_arrows=True)]
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else:
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right_margins = []
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if line_numbers:
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left_margins = [NumberedMargin()]
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else:
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left_margins = []
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else:
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height = D.exact(1)
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left_margins = []
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right_margins = []
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style = "class:text-area " + style
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self.window = Window(
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height=height,
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width=width,
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dont_extend_height=dont_extend_height,
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dont_extend_width=dont_extend_width,
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content=self.control,
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style=style,
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wrap_lines=Condition(lambda: is_true(self.wrap_lines)),
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left_margins=left_margins,
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right_margins=right_margins,
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get_line_prefix=get_line_prefix,
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)
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@property
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def text(self) -> str:
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"""
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The `Buffer` text.
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"""
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return self.buffer.text
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@text.setter
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def text(self, value: str) -> None:
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self.document = Document(value, 0)
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@property
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def document(self) -> Document:
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"""
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The `Buffer` document (text + cursor position).
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"""
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return self.buffer.document
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@document.setter
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def document(self, value: Document) -> None:
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self.buffer.set_document(value, bypass_readonly=True)
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@property
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def accept_handler(self) -> Optional[BufferAcceptHandler]:
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"""
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The accept handler. Called when the user accepts the input.
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"""
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return self.buffer.accept_handler
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@accept_handler.setter
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def accept_handler(self, value: BufferAcceptHandler) -> None:
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self.buffer.accept_handler = value
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def __pt_container__(self) -> Container:
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return self.window
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class Label:
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"""
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Widget that displays the given text. It is not editable or focusable.
|
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|
|
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:param text: The text to be displayed. (This can be multiline. This can be
|
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|
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formatted text as well.)
|
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:param style: A style string.
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:param width: When given, use this width, rather than calculating it from
|
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the text size.
|
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"""
|
||
|
|
|
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|
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def __init__(
|
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|
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self,
|
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text: AnyFormattedText,
|
||
|
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style: str = "",
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width: AnyDimension = None,
|
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|
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dont_extend_height: bool = True,
|
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|
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dont_extend_width: bool = False,
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) -> None:
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self.text = text
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def get_width() -> AnyDimension:
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if width is None:
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text_fragments = to_formatted_text(self.text)
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text = fragment_list_to_text(text_fragments)
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if text:
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longest_line = max(get_cwidth(line) for line in text.splitlines())
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else:
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return D(preferred=0)
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return D(preferred=longest_line)
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else:
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return width
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|
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self.formatted_text_control = FormattedTextControl(text=lambda: self.text)
|
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|
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self.window = Window(
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content=self.formatted_text_control,
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width=get_width,
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style="class:label " + style,
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dont_extend_height=dont_extend_height,
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dont_extend_width=dont_extend_width,
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)
|
||
|
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def __pt_container__(self) -> Container:
|
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return self.window
|
||
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|
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|
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class Button:
|
||
|
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"""
|
||
|
|
Clickable button.
|
||
|
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|
||
|
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:param text: The caption for the button.
|
||
|
|
:param handler: `None` or callable. Called when the button is clicked. No
|
||
|
|
parameters are passed to this callable. Use for instance Python's
|
||
|
|
`functools.partial` to pass parameters to this callable if needed.
|
||
|
|
:param width: Width of the button.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self, text: str, handler: Optional[Callable[[], None]] = None, width: int = 12
|
||
|
|
) -> None:
|
||
|
|
|
||
|
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self.text = text
|
||
|
|
self.handler = handler
|
||
|
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self.width = width
|
||
|
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self.control = FormattedTextControl(
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||
|
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self._get_text_fragments,
|
||
|
|
key_bindings=self._get_key_bindings(),
|
||
|
|
focusable=True,
|
||
|
|
)
|
||
|
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|
|
def get_style() -> str:
|
||
|
|
if get_app().layout.has_focus(self):
|
||
|
|
return "class:button.focused"
|
||
|
|
else:
|
||
|
|
return "class:button"
|
||
|
|
|
||
|
|
self.window = Window(
|
||
|
|
self.control,
|
||
|
|
align=WindowAlign.CENTER,
|
||
|
|
height=1,
|
||
|
|
width=width,
|
||
|
|
style=get_style,
|
||
|
|
dont_extend_width=True,
|
||
|
|
dont_extend_height=True,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _get_text_fragments(self) -> StyleAndTextTuples:
|
||
|
|
text = ("{:^%s}" % (self.width - 2)).format(self.text)
|
||
|
|
|
||
|
|
def handler(mouse_event: MouseEvent) -> None:
|
||
|
|
if (
|
||
|
|
self.handler is not None
|
||
|
|
and mouse_event.event_type == MouseEventType.MOUSE_UP
|
||
|
|
):
|
||
|
|
self.handler()
|
||
|
|
|
||
|
|
return [
|
||
|
|
("class:button.arrow", "<", handler),
|
||
|
|
("[SetCursorPosition]", ""),
|
||
|
|
("class:button.text", text, handler),
|
||
|
|
("class:button.arrow", ">", handler),
|
||
|
|
]
|
||
|
|
|
||
|
|
def _get_key_bindings(self) -> KeyBindings:
|
||
|
|
" Key bindings for the Button. "
|
||
|
|
kb = KeyBindings()
|
||
|
|
|
||
|
|
@kb.add(" ")
|
||
|
|
@kb.add("enter")
|
||
|
|
def _(event: E) -> None:
|
||
|
|
if self.handler is not None:
|
||
|
|
self.handler()
|
||
|
|
|
||
|
|
return kb
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.window
|
||
|
|
|
||
|
|
|
||
|
|
class Frame:
|
||
|
|
"""
|
||
|
|
Draw a border around any container, optionally with a title text.
|
||
|
|
|
||
|
|
Changing the title and body of the frame is possible at runtime by
|
||
|
|
assigning to the `body` and `title` attributes of this class.
|
||
|
|
|
||
|
|
:param body: Another container object.
|
||
|
|
:param title: Text to be displayed in the top of the frame (can be formatted text).
|
||
|
|
:param style: Style string to be applied to this widget.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
body: AnyContainer,
|
||
|
|
title: AnyFormattedText = "",
|
||
|
|
style: str = "",
|
||
|
|
width: AnyDimension = None,
|
||
|
|
height: AnyDimension = None,
|
||
|
|
key_bindings: Optional[KeyBindings] = None,
|
||
|
|
modal: bool = False,
|
||
|
|
) -> None:
|
||
|
|
|
||
|
|
self.title = title
|
||
|
|
self.body = body
|
||
|
|
|
||
|
|
fill = partial(Window, style="class:frame.border")
|
||
|
|
style = "class:frame " + style
|
||
|
|
|
||
|
|
top_row_with_title = VSplit(
|
||
|
|
[
|
||
|
|
fill(width=1, height=1, char=Border.TOP_LEFT),
|
||
|
|
fill(char=Border.HORIZONTAL),
|
||
|
|
fill(width=1, height=1, char="|"),
|
||
|
|
# Notice: we use `Template` here, because `self.title` can be an
|
||
|
|
# `HTML` object for instance.
|
||
|
|
Label(
|
||
|
|
lambda: Template(" {} ").format(self.title),
|
||
|
|
style="class:frame.label",
|
||
|
|
dont_extend_width=True,
|
||
|
|
),
|
||
|
|
fill(width=1, height=1, char="|"),
|
||
|
|
fill(char=Border.HORIZONTAL),
|
||
|
|
fill(width=1, height=1, char=Border.TOP_RIGHT),
|
||
|
|
],
|
||
|
|
height=1,
|
||
|
|
)
|
||
|
|
|
||
|
|
top_row_without_title = VSplit(
|
||
|
|
[
|
||
|
|
fill(width=1, height=1, char=Border.TOP_LEFT),
|
||
|
|
fill(char=Border.HORIZONTAL),
|
||
|
|
fill(width=1, height=1, char=Border.TOP_RIGHT),
|
||
|
|
],
|
||
|
|
height=1,
|
||
|
|
)
|
||
|
|
|
||
|
|
@Condition
|
||
|
|
def has_title() -> bool:
|
||
|
|
return bool(self.title)
|
||
|
|
|
||
|
|
self.container = HSplit(
|
||
|
|
[
|
||
|
|
ConditionalContainer(content=top_row_with_title, filter=has_title),
|
||
|
|
ConditionalContainer(content=top_row_without_title, filter=~has_title),
|
||
|
|
VSplit(
|
||
|
|
[
|
||
|
|
fill(width=1, char=Border.VERTICAL),
|
||
|
|
DynamicContainer(lambda: self.body),
|
||
|
|
fill(width=1, char=Border.VERTICAL),
|
||
|
|
# Padding is required to make sure that if the content is
|
||
|
|
# too small, the right frame border is still aligned.
|
||
|
|
],
|
||
|
|
padding=0,
|
||
|
|
),
|
||
|
|
VSplit(
|
||
|
|
[
|
||
|
|
fill(width=1, height=1, char=Border.BOTTOM_LEFT),
|
||
|
|
fill(char=Border.HORIZONTAL),
|
||
|
|
fill(width=1, height=1, char=Border.BOTTOM_RIGHT),
|
||
|
|
]
|
||
|
|
),
|
||
|
|
],
|
||
|
|
width=width,
|
||
|
|
height=height,
|
||
|
|
style=style,
|
||
|
|
key_bindings=key_bindings,
|
||
|
|
modal=modal,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.container
|
||
|
|
|
||
|
|
|
||
|
|
class Shadow:
|
||
|
|
"""
|
||
|
|
Draw a shadow underneath/behind this container.
|
||
|
|
(This applies `class:shadow` the the cells under the shadow. The Style
|
||
|
|
should define the colors for the shadow.)
|
||
|
|
|
||
|
|
:param body: Another container object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, body: AnyContainer) -> None:
|
||
|
|
self.container = FloatContainer(
|
||
|
|
content=body,
|
||
|
|
floats=[
|
||
|
|
Float(
|
||
|
|
bottom=-1,
|
||
|
|
height=1,
|
||
|
|
left=1,
|
||
|
|
right=-1,
|
||
|
|
transparent=True,
|
||
|
|
content=Window(style="class:shadow"),
|
||
|
|
),
|
||
|
|
Float(
|
||
|
|
bottom=-1,
|
||
|
|
top=1,
|
||
|
|
width=1,
|
||
|
|
right=-1,
|
||
|
|
transparent=True,
|
||
|
|
content=Window(style="class:shadow"),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.container
|
||
|
|
|
||
|
|
|
||
|
|
class Box:
|
||
|
|
"""
|
||
|
|
Add padding around a container.
|
||
|
|
|
||
|
|
This also makes sure that the parent can provide more space than required by
|
||
|
|
the child. This is very useful when wrapping a small element with a fixed
|
||
|
|
size into a ``VSplit`` or ``HSplit`` object. The ``HSplit`` and ``VSplit``
|
||
|
|
try to make sure to adapt respectively the width and height, possibly
|
||
|
|
shrinking other elements. Wrapping something in a ``Box`` makes it flexible.
|
||
|
|
|
||
|
|
:param body: Another container object.
|
||
|
|
:param padding: The margin to be used around the body. This can be
|
||
|
|
overridden by `padding_left`, padding_right`, `padding_top` and
|
||
|
|
`padding_bottom`.
|
||
|
|
:param style: A style string.
|
||
|
|
:param char: Character to be used for filling the space around the body.
|
||
|
|
(This is supposed to be a character with a terminal width of 1.)
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
body: AnyContainer,
|
||
|
|
padding: AnyDimension = None,
|
||
|
|
padding_left: AnyDimension = None,
|
||
|
|
padding_right: AnyDimension = None,
|
||
|
|
padding_top: AnyDimension = None,
|
||
|
|
padding_bottom: AnyDimension = None,
|
||
|
|
width: AnyDimension = None,
|
||
|
|
height: AnyDimension = None,
|
||
|
|
style: str = "",
|
||
|
|
char: Union[None, str, Callable[[], str]] = None,
|
||
|
|
modal: bool = False,
|
||
|
|
key_bindings: Optional[KeyBindings] = None,
|
||
|
|
) -> None:
|
||
|
|
|
||
|
|
if padding is None:
|
||
|
|
padding = D(preferred=0)
|
||
|
|
|
||
|
|
def get(value: AnyDimension) -> D:
|
||
|
|
if value is None:
|
||
|
|
value = padding
|
||
|
|
return to_dimension(value)
|
||
|
|
|
||
|
|
self.padding_left = get(padding_left)
|
||
|
|
self.padding_right = get(padding_right)
|
||
|
|
self.padding_top = get(padding_top)
|
||
|
|
self.padding_bottom = get(padding_bottom)
|
||
|
|
self.body = body
|
||
|
|
|
||
|
|
self.container = HSplit(
|
||
|
|
[
|
||
|
|
Window(height=self.padding_top, char=char),
|
||
|
|
VSplit(
|
||
|
|
[
|
||
|
|
Window(width=self.padding_left, char=char),
|
||
|
|
body,
|
||
|
|
Window(width=self.padding_right, char=char),
|
||
|
|
]
|
||
|
|
),
|
||
|
|
Window(height=self.padding_bottom, char=char),
|
||
|
|
],
|
||
|
|
width=width,
|
||
|
|
height=height,
|
||
|
|
style=style,
|
||
|
|
modal=modal,
|
||
|
|
key_bindings=None,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.container
|
||
|
|
|
||
|
|
|
||
|
|
_T = TypeVar("_T")
|
||
|
|
|
||
|
|
|
||
|
|
class _DialogList(Generic[_T]):
|
||
|
|
"""
|
||
|
|
Common code for `RadioList` and `CheckboxList`.
|
||
|
|
"""
|
||
|
|
|
||
|
|
open_character: str = ""
|
||
|
|
close_character: str = ""
|
||
|
|
container_style: str = ""
|
||
|
|
default_style: str = ""
|
||
|
|
selected_style: str = ""
|
||
|
|
checked_style: str = ""
|
||
|
|
multiple_selection: bool = False
|
||
|
|
show_scrollbar: bool = True
|
||
|
|
|
||
|
|
def __init__(self, values: Sequence[Tuple[_T, AnyFormattedText]]) -> None:
|
||
|
|
assert len(values) > 0
|
||
|
|
|
||
|
|
self.values = values
|
||
|
|
# current_values will be used in multiple_selection,
|
||
|
|
# current_value will be used otherwise.
|
||
|
|
self.current_values: List[_T] = []
|
||
|
|
self.current_value: _T = values[0][0]
|
||
|
|
self._selected_index = 0
|
||
|
|
|
||
|
|
# Key bindings.
|
||
|
|
kb = KeyBindings()
|
||
|
|
|
||
|
|
@kb.add("up")
|
||
|
|
def _up(event: E) -> None:
|
||
|
|
self._selected_index = max(0, self._selected_index - 1)
|
||
|
|
|
||
|
|
@kb.add("down")
|
||
|
|
def _down(event: E) -> None:
|
||
|
|
self._selected_index = min(len(self.values) - 1, self._selected_index + 1)
|
||
|
|
|
||
|
|
@kb.add("pageup")
|
||
|
|
def _pageup(event: E) -> None:
|
||
|
|
w = event.app.layout.current_window
|
||
|
|
if w.render_info:
|
||
|
|
self._selected_index = max(
|
||
|
|
0, self._selected_index - len(w.render_info.displayed_lines)
|
||
|
|
)
|
||
|
|
|
||
|
|
@kb.add("pagedown")
|
||
|
|
def _pagedown(event: E) -> None:
|
||
|
|
w = event.app.layout.current_window
|
||
|
|
if w.render_info:
|
||
|
|
self._selected_index = min(
|
||
|
|
len(self.values) - 1,
|
||
|
|
self._selected_index + len(w.render_info.displayed_lines),
|
||
|
|
)
|
||
|
|
|
||
|
|
@kb.add("enter")
|
||
|
|
@kb.add(" ")
|
||
|
|
def _click(event: E) -> None:
|
||
|
|
self._handle_enter()
|
||
|
|
|
||
|
|
@kb.add(Keys.Any)
|
||
|
|
def _find(event: E) -> None:
|
||
|
|
# We first check values after the selected value, then all values.
|
||
|
|
values = list(self.values)
|
||
|
|
for value in values[self._selected_index + 1 :] + values:
|
||
|
|
text = fragment_list_to_text(to_formatted_text(value[1])).lower()
|
||
|
|
|
||
|
|
if text.startswith(event.data.lower()):
|
||
|
|
self._selected_index = self.values.index(value)
|
||
|
|
return
|
||
|
|
|
||
|
|
# Control and window.
|
||
|
|
self.control = FormattedTextControl(
|
||
|
|
self._get_text_fragments, key_bindings=kb, focusable=True
|
||
|
|
)
|
||
|
|
|
||
|
|
self.window = Window(
|
||
|
|
content=self.control,
|
||
|
|
style=self.container_style,
|
||
|
|
right_margins=[
|
||
|
|
ConditionalMargin(
|
||
|
|
margin=ScrollbarMargin(display_arrows=True),
|
||
|
|
filter=Condition(lambda: self.show_scrollbar),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
dont_extend_height=True,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _handle_enter(self) -> None:
|
||
|
|
if self.multiple_selection:
|
||
|
|
val = self.values[self._selected_index][0]
|
||
|
|
if val in self.current_values:
|
||
|
|
self.current_values.remove(val)
|
||
|
|
else:
|
||
|
|
self.current_values.append(val)
|
||
|
|
else:
|
||
|
|
self.current_value = self.values[self._selected_index][0]
|
||
|
|
|
||
|
|
def _get_text_fragments(self) -> StyleAndTextTuples:
|
||
|
|
def mouse_handler(mouse_event: MouseEvent) -> None:
|
||
|
|
"""
|
||
|
|
Set `_selected_index` and `current_value` according to the y
|
||
|
|
position of the mouse click event.
|
||
|
|
"""
|
||
|
|
if mouse_event.event_type == MouseEventType.MOUSE_UP:
|
||
|
|
self._selected_index = mouse_event.position.y
|
||
|
|
self._handle_enter()
|
||
|
|
|
||
|
|
result: StyleAndTextTuples = []
|
||
|
|
for i, value in enumerate(self.values):
|
||
|
|
if self.multiple_selection:
|
||
|
|
checked = value[0] in self.current_values
|
||
|
|
else:
|
||
|
|
checked = value[0] == self.current_value
|
||
|
|
selected = i == self._selected_index
|
||
|
|
|
||
|
|
style = ""
|
||
|
|
if checked:
|
||
|
|
style += " " + self.checked_style
|
||
|
|
if selected:
|
||
|
|
style += " " + self.selected_style
|
||
|
|
|
||
|
|
result.append((style, self.open_character))
|
||
|
|
|
||
|
|
if selected:
|
||
|
|
result.append(("[SetCursorPosition]", ""))
|
||
|
|
|
||
|
|
if checked:
|
||
|
|
result.append((style, "*"))
|
||
|
|
else:
|
||
|
|
result.append((style, " "))
|
||
|
|
|
||
|
|
result.append((style, self.close_character))
|
||
|
|
result.append((self.default_style, " "))
|
||
|
|
result.extend(to_formatted_text(value[1], style=self.default_style))
|
||
|
|
result.append(("", "\n"))
|
||
|
|
|
||
|
|
# Add mouse handler to all fragments.
|
||
|
|
for i in range(len(result)):
|
||
|
|
result[i] = (result[i][0], result[i][1], mouse_handler)
|
||
|
|
|
||
|
|
result.pop() # Remove last newline.
|
||
|
|
return result
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.window
|
||
|
|
|
||
|
|
|
||
|
|
class RadioList(_DialogList[_T]):
|
||
|
|
"""
|
||
|
|
List of radio buttons. Only one can be checked at the same time.
|
||
|
|
|
||
|
|
:param values: List of (value, label) tuples.
|
||
|
|
"""
|
||
|
|
|
||
|
|
open_character = "("
|
||
|
|
close_character = ")"
|
||
|
|
container_style = "class:radio-list"
|
||
|
|
default_style = "class:radio"
|
||
|
|
selected_style = "class:radio-selected"
|
||
|
|
checked_style = "class:radio-checked"
|
||
|
|
multiple_selection = False
|
||
|
|
|
||
|
|
|
||
|
|
class CheckboxList(_DialogList[_T]):
|
||
|
|
"""
|
||
|
|
List of checkbox buttons. Several can be checked at the same time.
|
||
|
|
|
||
|
|
:param values: List of (value, label) tuples.
|
||
|
|
"""
|
||
|
|
|
||
|
|
open_character = "["
|
||
|
|
close_character = "]"
|
||
|
|
container_style = "class:checkbox-list"
|
||
|
|
default_style = "class:checkbox"
|
||
|
|
selected_style = "class:checkbox-selected"
|
||
|
|
checked_style = "class:checkbox-checked"
|
||
|
|
multiple_selection = True
|
||
|
|
|
||
|
|
|
||
|
|
class Checkbox(CheckboxList[str]):
|
||
|
|
"""Backward compatibility util: creates a 1-sized CheckboxList
|
||
|
|
|
||
|
|
:param text: the text
|
||
|
|
"""
|
||
|
|
|
||
|
|
show_scrollbar = False
|
||
|
|
|
||
|
|
def __init__(self, text: AnyFormattedText = "", checked: bool = False) -> None:
|
||
|
|
values = [("value", text)]
|
||
|
|
CheckboxList.__init__(self, values)
|
||
|
|
self.checked = checked
|
||
|
|
|
||
|
|
@property
|
||
|
|
def checked(self) -> bool:
|
||
|
|
return "value" in self.current_values
|
||
|
|
|
||
|
|
@checked.setter
|
||
|
|
def checked(self, value: bool) -> None:
|
||
|
|
if value:
|
||
|
|
self.current_values = ["value"]
|
||
|
|
else:
|
||
|
|
self.current_values = []
|
||
|
|
|
||
|
|
|
||
|
|
class VerticalLine(object):
|
||
|
|
"""
|
||
|
|
A simple vertical line with a width of 1.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self) -> None:
|
||
|
|
self.window = Window(
|
||
|
|
char=Border.VERTICAL, style="class:line,vertical-line", width=1
|
||
|
|
)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.window
|
||
|
|
|
||
|
|
|
||
|
|
class HorizontalLine:
|
||
|
|
"""
|
||
|
|
A simple horizontal line with a height of 1.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self) -> None:
|
||
|
|
self.window = Window(
|
||
|
|
char=Border.HORIZONTAL, style="class:line,horizontal-line", height=1
|
||
|
|
)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.window
|
||
|
|
|
||
|
|
|
||
|
|
class ProgressBar:
|
||
|
|
def __init__(self) -> None:
|
||
|
|
self._percentage = 60
|
||
|
|
|
||
|
|
self.label = Label("60%")
|
||
|
|
self.container = FloatContainer(
|
||
|
|
content=Window(height=1),
|
||
|
|
floats=[
|
||
|
|
# We first draw the label, then the actual progress bar. Right
|
||
|
|
# now, this is the only way to have the colors of the progress
|
||
|
|
# bar appear on top of the label. The problem is that our label
|
||
|
|
# can't be part of any `Window` below.
|
||
|
|
Float(content=self.label, top=0, bottom=0),
|
||
|
|
Float(
|
||
|
|
left=0,
|
||
|
|
top=0,
|
||
|
|
right=0,
|
||
|
|
bottom=0,
|
||
|
|
content=VSplit(
|
||
|
|
[
|
||
|
|
Window(
|
||
|
|
style="class:progress-bar.used",
|
||
|
|
width=lambda: D(weight=int(self._percentage)),
|
||
|
|
),
|
||
|
|
Window(
|
||
|
|
style="class:progress-bar",
|
||
|
|
width=lambda: D(weight=int(100 - self._percentage)),
|
||
|
|
),
|
||
|
|
]
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def percentage(self) -> int:
|
||
|
|
return self._percentage
|
||
|
|
|
||
|
|
@percentage.setter
|
||
|
|
def percentage(self, value: int) -> None:
|
||
|
|
self._percentage = value
|
||
|
|
self.label.text = "{0}%".format(value)
|
||
|
|
|
||
|
|
def __pt_container__(self) -> Container:
|
||
|
|
return self.container
|