121 lines
4.5 KiB
Python
121 lines
4.5 KiB
Python
import json
|
|
import warnings
|
|
import os
|
|
|
|
from .development.base_component import ComponentRegistry
|
|
from . import exceptions
|
|
|
|
|
|
class Resources:
|
|
def __init__(self, resource_name):
|
|
self._resources = []
|
|
self.resource_name = resource_name
|
|
|
|
def append_resource(self, resource):
|
|
self._resources.append(resource)
|
|
|
|
# pylint: disable=too-many-branches
|
|
def _filter_resources(self, all_resources, dev_bundles=False):
|
|
filtered_resources = []
|
|
for s in all_resources:
|
|
filtered_resource = {}
|
|
if "dynamic" in s:
|
|
filtered_resource["dynamic"] = s["dynamic"]
|
|
if "async" in s:
|
|
if "dynamic" in s:
|
|
raise exceptions.ResourceException(
|
|
f"""
|
|
Can't have both 'dynamic' and 'async'.
|
|
{json.dumps(filtered_resource)}
|
|
"""
|
|
)
|
|
|
|
# Async assigns a value dynamically to 'dynamic'
|
|
# based on the value of 'async' and config.eager_loading
|
|
#
|
|
# True -> dynamic if the server is not eager, False otherwise
|
|
# 'lazy' -> always dynamic
|
|
# 'eager' -> dynamic if server is not eager
|
|
# (to prevent ever loading it)
|
|
filtered_resource["dynamic"] = (
|
|
not self.config.eager_loading
|
|
if s["async"] is True
|
|
else (s["async"] == "eager" and not self.config.eager_loading)
|
|
or s["async"] == "lazy"
|
|
)
|
|
if "namespace" in s:
|
|
filtered_resource["namespace"] = s["namespace"]
|
|
if "external_url" in s and not self.config.serve_locally:
|
|
filtered_resource["external_url"] = s["external_url"]
|
|
elif "dev_package_path" in s and dev_bundles:
|
|
filtered_resource["relative_package_path"] = s["dev_package_path"]
|
|
elif "relative_package_path" in s:
|
|
filtered_resource["relative_package_path"] = s["relative_package_path"]
|
|
elif "absolute_path" in s:
|
|
filtered_resource["absolute_path"] = s["absolute_path"]
|
|
elif "asset_path" in s:
|
|
info = os.stat(s["filepath"])
|
|
filtered_resource["asset_path"] = s["asset_path"]
|
|
filtered_resource["ts"] = info.st_mtime
|
|
elif self.config.serve_locally:
|
|
warnings.warn(
|
|
(
|
|
"You have set your config to `serve_locally=True` but "
|
|
f"A local version of {s['external_url']} is not available.\n"
|
|
"If you added this file with "
|
|
"`app.scripts.append_script` "
|
|
"or `app.css.append_css`, use `external_scripts` "
|
|
"or `external_stylesheets` instead.\n"
|
|
"See https://dash.plotly.com/external-resources"
|
|
)
|
|
)
|
|
continue
|
|
else:
|
|
raise exceptions.ResourceException(
|
|
f"""
|
|
{json.dumps(filtered_resource)} does not have a
|
|
relative_package_path, absolute_path, or an external_url.
|
|
"""
|
|
)
|
|
|
|
filtered_resources.append(filtered_resource)
|
|
|
|
return filtered_resources
|
|
|
|
def get_all_resources(self, dev_bundles=False):
|
|
lib_resources = ComponentRegistry.get_resources(self.resource_name)
|
|
all_resources = lib_resources + self._resources
|
|
|
|
return self._filter_resources(all_resources, dev_bundles)
|
|
|
|
|
|
# pylint: disable=too-few-public-methods
|
|
class _Config:
|
|
def __init__(self, serve_locally, eager_loading):
|
|
self.eager_loading = eager_loading
|
|
self.serve_locally = serve_locally
|
|
|
|
|
|
class Css:
|
|
def __init__(self, serve_locally):
|
|
self._resources = Resources("_css_dist")
|
|
self._resources.config = self.config = _Config(serve_locally, True)
|
|
|
|
def append_css(self, stylesheet):
|
|
self._resources.append_resource(stylesheet)
|
|
|
|
def get_all_css(self):
|
|
return self._resources.get_all_resources()
|
|
|
|
|
|
class Scripts:
|
|
def __init__(self, serve_locally, eager):
|
|
self._resources = Resources("_js_dist")
|
|
self._resources.config = self.config = _Config(serve_locally, eager)
|
|
|
|
def append_script(self, script):
|
|
self._resources.append_resource(script)
|
|
|
|
def get_all_scripts(self, dev_bundles=False):
|
|
return self._resources.get_all_resources(dev_bundles)
|