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import os
import json
from typing import Tuple, List, Dict
from pathlib import Path
from modules.images import sanitize_filename_part
PresetDict = Dict[str, Dict[str, any]]
class Preset:
base_dir: Path
default_filename: str
default_values: PresetDict
components: List[object]
def __init__(
self,
base_dir: os.PathLike,
default_filename='default.json'
) -> None:
self.base_dir = Path(base_dir)
self.default_filename = default_filename
self.default_values = self.load(default_filename)[1]
self.components = []
def component(self, component_class: object, **kwargs) -> object:
# find all the top components from the Gradio context and create a path
from gradio.context import Context
parent = Context.block
paths = [kwargs['label']]
while parent is not None:
if hasattr(parent, 'label'):
paths.insert(0, parent.label)
parent = parent.parent
path = '/'.join(paths)
component = component_class(**{
**kwargs,
**self.default_values.get(path, {})
})
setattr(component, 'path', path)
self.components.append(component)
return component
def load(self, filename: str) -> Tuple[str, PresetDict]:
if not filename.endswith('.json'):
filename += '.json'
path = self.base_dir.joinpath(sanitize_filename_part(filename))
configs = {}
if path.is_file():
configs = json.loads(path.read_text())
return path, configs
def save(self, filename: str, *values) -> Tuple:
path, configs = self.load(filename)
for index, component in enumerate(self.components):
config = configs.get(component.path, {})
config['value'] = values[index]
for attr in ['visible', 'min', 'max', 'step']:
if hasattr(component, attr):
config[attr] = config.get(attr, getattr(component, attr))
configs[component.path] = config
self.base_dir.mkdir(0o777, True, True)
path.write_text(
json.dumps(configs, indent=4)
)
return 'successfully saved the preset'
def apply(self, filename: str) -> Tuple:
values = self.load(filename)[1]
outputs = []
for component in self.components:
config = values.get(component.path, {})
if 'value' in config and hasattr(component, 'choices'):
if config['value'] not in component.choices:
config['value'] = None
outputs.append(component.update(**config))
return (*outputs, 'successfully loaded the preset')
def list(self) -> List[str]:
presets = [
p.name
for p in self.base_dir.glob('*.json')
if p.is_file()
]
if len(presets) < 1:
presets.append(self.default_filename)
return presets
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