Improve efficiency of getting accessibility tree (#57)

* Initial commit

* Accelarate a11y tree acquisition

* Clean code

* Leave todos for Windows and macOS

* Prepare for support of win and macos

* Prepare for support of win and macos

* Minor fix

* add preliminary support for macos

* fix subtle bugs

* Clean the windows a11y tree getter code

* Clean the windows a11y tree getter code

* Intermediate version

* Intermediate version

* Update

* adding support for macos

* Delete dummy

* Delete dummy

* add bounding box for pruning

* Delete dummy

* FIX: enable a11y tree fetching on Windows

* Move the requirement depency item place

* FIX: remove "jsonify" from return value of get a11y tree

* FIX: change print into logger, decompose functions in _create_pywinauto_node

* Update

* remove redundant nodes on macos

* remove reliance of pywinauto

* Clean

* Fix bugs for pywinauto a11y_tree acquisition

* FEAT: only fetch active windows, skip repeated nodes

* CHORE: clean code, add comments on time-consuming part, add connection logger.info

* FEAT: 1. add attrs including class_name, id, count... 2. use multithread to accelerate

* FIX: add code of getting writable properties

* Clean, update the max_depth for macOS

* FIX: get all active windows

* Accelarate child nodes in macOS

* FEAT: get all active windows, add timing when testing

* CHORE: remove print

* Clean and finalize

* Clean and finalize

---------

Co-authored-by: Timothyxxx <384084775@qq.com>
Co-authored-by: Junli Wang <ltnsxdxd@gmail.com>
Co-authored-by: YangJL2003 <yangjl22@mails.tsinghua.edu.cn>

desktop_env/server/requirements.txt

@@ -7,3 +7,4 @@ flask
 numpy
 lxml
 pygame
+pywinauto