[elbe-devel] [PATCH v2 03/13] Debianize - Button widget

[Bastian Germann]

> From: Olivier Dion <dion at linutronix.de>
> 
> A simple and clean button widget.
> 
> Signed-off-by: Olivier Dion <dion at linutronix.de>

Reviewed-by: Bastian Germann <bage at linutronix.de>

> ---
>  elbepack/debianize/widgets/button.py | 52 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 elbepack/debianize/widgets/button.py
> 
> diff --git a/elbepack/debianize/widgets/button.py b/elbepack/debianize/widgets/button.py
> new file mode 100644
> index 00000000..6e9663a9
> --- /dev/null
> +++ b/elbepack/debianize/widgets/button.py
> @@ -0,0 +1,52 @@
> +# ELBE - Debian Based Embedded Rootfilesystem Builder
> +# Copyright (c) 2019 Olivier Dion <dion at linutronix.de>
> +#
> +# SPDX-License-Identifier: GPL-3.0-or-later
> +
> +
> +from urwid import (
> +    AttrMap,
> +    LineBox,
> +    Text,
> +    WidgetWrap,
> +    connect_signal,
> +    emit_signal
> +)
> +
> +from elbepack.debianize.base.tui import TUISignal
> +
> +
> +class Button(WidgetWrap):
> +    """
> +    A simple and clean button widget
> +    """
> +
> +    signals = [TUISignal.CLICK]
> +
> +    def __init__(self, text, palette, callback):
> +        """
> +        @text:  The text of show in the button.
> +        @palette:  A valid palette name to apply on the button.  See @TUI::palette
> +        @callback:  The callback to call when the button is clicked.
> +        """
> +
> +        widget = LineBox(AttrMap(Text("[{}]".format(text), align="center"),
> +                                 "default", palette))
> +        super(Button, self).__init__(widget)
> +        connect_signal(self, TUISignal.CLICK, callback)
> +
> +        # Very important!  This is not documented in urwid's
> +        # documentation!  Without this, the button would only text.
> +        self._w.base_widget._selectable = True
> +
> +    def keypress(self, size, key):
> +        if key == "enter":
> +            emit_signal(self, TUISignal.CLICK)
> +            return None
> +        return key
> +
> +    def mouse_event(self, size, event, button, col, row, focus):
> +        if focus and event == "mouse release":
> +            emit_signal(self, TUISignal.CLICK)
> +            return True
> +        return False
>