Extend toc in sidebar indentation

[s-weigand]

Since for some auto-generated documentation, only having indentation till navigation_depth==4 might lead to problems (see), I followed @agjohnson 's comment and implemented indentation until navigation_depth==10.

What this PR does:

• Indentation for elements of the toc in sidebar up to navigation_depth==10
• Fontsize shrinking only for elements of levels-{2,3,4}, as before, but with a placeholder selector.
• Generalization of some properties for elements of the toc in sidebar with placeholder selectors and for loop.

Before

After

[eine]

ping @Blendify @ericholscher @agjohnson

[Alexdara]

@s-weigand
I can not update my python lib thought
pip install git+https://github.com/readthedocs/sphinx_rtd_theme.git@master
it returns：
Installing collected packages: sphinx-rtd-theme Attempting uninstall: sphinx-rtd-theme Found existing installation: sphinx-rtd-theme 0.4.3 Uninstalling sphinx-rtd-theme-0.4.3: Successfully uninstalled sphinx-rtd-theme-0.4.3 Running setup.py install for sphinx-rtd-theme ... error ERROR: Command errored out with exit status 1: command: 'c:\program files\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"'; __file__='"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-record-uh7x79kq\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\program files\python37\Include\sphinx-rtd-theme' cwd: C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-req-build-60liz4ry\ Complete output (4 lines): running install running build running build_py error: [WinError 2] The system cannot find the file specified. ---------------------------------------- Rolling back uninstall of sphinx-rtd-theme Moving to c:\program files\python37\lib\site-packages\sphinx_rtd_theme-0.4.3.dist-info\ from c:\program files\python37\lib\site-packages\~phinx_rtd_theme-0.4.3.dist-info Moving to c:\program files\python37\lib\site-packages\sphinx_rtd_theme\ from c:\program files\python37\lib\site-packages\~phinx_rtd_theme ERROR: Command errored out with exit status 1: 'c:\program files\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"'; __file__='"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-record-uh7x79kq\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\program files\python37\Include\sphinx-rtd-theme' Check the logs for full command output.

Are there any suggestions？Thanks a lot.

[Alexdara]

@s-weigand
I can not update my python lib thought
pip install git+https://github.com/readthedocs/sphinx_rtd_theme.git@master
it returns：
Installing collected packages: sphinx-rtd-theme Attempting uninstall: sphinx-rtd-theme Found existing installation: sphinx-rtd-theme 0.4.3 Uninstalling sphinx-rtd-theme-0.4.3: Successfully uninstalled sphinx-rtd-theme-0.4.3 Running setup.py install for sphinx-rtd-theme ... error ERROR: Command errored out with exit status 1: command: 'c:\program files\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"'; __file__='"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-record-uh7x79kq\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\program files\python37\Include\sphinx-rtd-theme' cwd: C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-req-build-60liz4ry\ Complete output (4 lines): running install running build running build_py error: [WinError 2] The system cannot find the file specified. ---------------------------------------- Rolling back uninstall of sphinx-rtd-theme Moving to c:\program files\python37\lib\site-packages\sphinx_rtd_theme-0.4.3.dist-info\ from c:\program files\python37\lib\site-packages\~phinx_rtd_theme-0.4.3.dist-info Moving to c:\program files\python37\lib\site-packages\sphinx_rtd_theme\ from c:\program files\python37\lib\site-packages\~phinx_rtd_theme ERROR: Command errored out with exit status 1: 'c:\program files\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"'; __file__='"'"'C:\\Users\\TOH-WZ~1\\AppData\\Local\\Temp\\pip-req-build-60liz4ry\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\TOH-WZ~1\AppData\Local\Temp\pip-record-uh7x79kq\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\program files\python37\Include\sphinx-rtd-theme' Check the logs for full command output.

Are there any suggestions？Thanks a lot.

Solved this by use
pip install -e git+https://github.com/readthedocs/sphinx_rtd_theme.git@master#egg=sphinx-rtd-theme

[s-weigand]

I think that the problem with directly installing it from from git, in none dev mode, is that the setup needs a local installation of webpack.
See:

sphinx_rtd_theme/setup.py

Lines 16 to 24 in ca015a5

	class WebpackBuildCommand(setuptools.command.build_py.build_py):
	"""Prefix Python build with Webpack asset build"""
	def run(self):
	if not 'CI' in os.environ:
	subprocess.run(['npm', 'install'], check=True)
	subprocess.run(['node_modules/.bin/webpack', '--config', 'webpack.prod.js'], check=True)
	setuptools.command.build_py.build_py.run(self)

[Alexdara]

I think that the problem with directly installing it from from git, in none dev mode, is that the setup needs a local installation of webpack.
See:

sphinx_rtd_theme/setup.py

Lines 16 to 24 in ca015a5

	class WebpackBuildCommand(setuptools.command.build_py.build_py):
	"""Prefix Python build with Webpack asset build"""
	def run(self):
	if not 'CI' in os.environ:
	subprocess.run(['npm', 'install'], check=True)
	subprocess.run(['node_modules/.bin/webpack', '--config', 'webpack.prod.js'], check=True)
	setuptools.command.build_py.build_py.run(self)

After install webpack,still returns error as above.