bpo-33839: refactor IDLE's tooltips & calltips, add docstrings and tests (GH-7683)

* make CallTip and ToolTip sub-classes of a common abstract base class
* remove ListboxToolTip (unused and ugly)
* greatly increase test coverage
* tested on Windows, Linux and macOS

Tal Einat committed 7y ago

87e59ac11ee074b0dc1bc864c74fac0660b27f6e

Parent: 2e5566d

Committed by GitHub <noreply@github.com> on 8/5/2018, 6:21:08 AM