Need to improve print_control_identifiers() performance with depth param

I’ve observed very slow behavior for iTunes (tab “Store”).

>>> len(app.iTunes.descendants()) # takes ~2.5-3 sec.
3024
>>> len(app.iTunes.children()) # takes less than 0.1 sec.
5

app.iTunes.print_control_identifiers() takes more than a minute! Couldn’t wait it for a reasonable time. Even if I set argument depth=1.

I think we need to improve this at least for some constrained depth value.

[cetygamer]

The cause is UIAWrapper.__hash__ method. https://github.com/pywinauto/pywinauto/blob/master/pywinauto/controls/uiawrapper.py#L198 A lot of controls don’t have RuntimeId field, so mapping dictionary out of controls in order to build control tree takes a very long time. Typical item in iTunes app looks like this:

[vasily-v-ryabov]

This issue as it was submitted initially is fixed in atspi branch by PR #1049. Let’s continue other optimization topics in #256.