[Urwid] New pull down widget

[Keith Dart]

Hello urwid people,

Here is a widget I recently created for a project. I needed something
like a pull-down that GUIs have. It enables you to select from a list
of options, without taking up much screen space.

Attached is the widget file and demo program.


Keith Dart
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Keith Dart <keith at dartworks.biz>
public key: ID: 19017044
<http://www.dartworks.biz/>
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[Keith Dart]

On Wed, 14 Nov 2012 23:14:34 -0800

Post by Keith Dart
Here is a widget I recently created for a project.

Oops, forgot to add this helper function.

I guess this should be a method.

def prefix_index(thelist, prefix, index=0):
while index < len(thelist):
if thelist[index].startswith(prefix):
return index
index += 1
return None

[Keith Dart]

On Wed, 14 Nov 2012 23:14:34 -0800

Post by Keith Dart
Attached is the widget file and demo program.

Ok, new, fixed version. Sorry about the last one.
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<http://www.dartworks.biz/>
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[Ian Ward]

Post by Keith Dart
Ok, new, fixed version. Sorry about the last one.

Thanks Keith.

There are a few issues I notice: You assume the length of a string is
the same as its width on screen (not true for wide or combining
characters), render fails if the screen is too narrow, and there's no
handling of mouse events.

For the last two It would be better to let existing widgets handle
your rendering and mouse events (like Columns, Text and Button) by
subclassing WidgetWrap. Have you seen the new tutorial examples?

For the first you can use Text.pack() to calculate the "ideal" width
of a piece of text.

Ian