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# Copyright 2024 The etils Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Utils to auto-apply `ecolab.inspect`."""
import functools
from etils.ecolab import ip_utils
from etils.ecolab import pyjs_com
from etils.ecolab.inspects import core
from etils.ecolab.inspects import nodes
from etils.ecolab.inspects import resource_utils
import IPython
import IPython.display
@functools.lru_cache(None)
def auto_inspect() -> None:
"""Add a button on each cell outputs to switch output to `ecolab.inspect`."""
ip_utils.register_once(
'post_run_cell',
_post_run_cell_add_inspect,
'__is_auto_inspect__',
)
def _post_run_cell_add_inspect(*args) -> None:
"""Callback after cell execution to add the `inspect` button."""
del args # Future version of IPython will have a `result` arg
# TODO(epot): Detect if IPython has output
# Currently, this add an output because `_` is set to the previous
# value if no output is set.
ip = IPython.get_ipython()
# TODO(epot): Store the `last_result` in a weakref to avoid memory leaks.
last_result = ip.ev('_')
root = nodes.Node.from_obj(last_result)
# TODO(epot): Should not load all `css`/`js` everytime ?
# Especially the main inspect one which is used only after activation.
html_content = IPython.display.HTML(f"""
{pyjs_com.js_import()}
{resource_utils.resource_import('auto_activate.css')}
{resource_utils.resource_import('auto_activate.js')}
{resource_utils.resource_import('theme.css')}
{resource_utils.resource_import('main.js')}
<script>
add_auto_activate("{root.id}");
</script>
""")
IPython.display.display(html_content)
@pyjs_com.register_js_fn
def get_inspect_html(id_: str) -> str:
"""Returns the inspect content."""
node = nodes.Node.from_id(id_)
return core.main_inspect_html(node)
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