| 5 | |
| 6 | |
| 7 | class TemplateProperty: |
| 8 | def __init__(self, template_config, parameters: ObservableList, value_wrappers: ObservableDict, empty=None) -> None: |
| 9 | self._value_property = Property(None) |
| 10 | self._template_config = template_config |
| 11 | self._values = value_wrappers |
| 12 | self._empty = empty |
| 13 | self._parameters = parameters |
| 14 | |
| 15 | pattern = re.compile('\${([^}]+)\}') |
| 16 | |
| 17 | search_start = 0 |
| 18 | script_template = '' |
| 19 | required_parameters = set() |
| 20 | |
| 21 | templates = template_config if isinstance(template_config, list) else [template_config] |
| 22 | |
| 23 | for template in templates: |
| 24 | if template: |
| 25 | while search_start < len(template): |
| 26 | match = pattern.search(template, search_start) |
| 27 | if not match: |
| 28 | script_template += template[search_start:] |
| 29 | break |
| 30 | param_start = match.start() |
| 31 | if param_start > search_start: |
| 32 | script_template += template[search_start:param_start] |
| 33 | |
| 34 | param_name = match.group(1) |
| 35 | required_parameters.add(param_name) |
| 36 | |
| 37 | search_start = match.end() + 1 |
| 38 | |
| 39 | self.required_parameters = tuple(required_parameters) |
| 40 | |
| 41 | self._reload() |
| 42 | |
| 43 | if self.required_parameters: |
| 44 | value_wrappers.subscribe(self._value_changed) |
| 45 | parameters.subscribe(self) |
| 46 | |
| 47 | def _value_changed(self, parameter, old, new): |
| 48 | if parameter in self.required_parameters: |
| 49 | self._reload() |
| 50 | |
| 51 | def on_add(self, parameter, index): |
| 52 | if parameter.name in self.required_parameters: |
| 53 | self._reload() |
| 54 | |
| 55 | def on_remove(self, parameter): |
| 56 | if parameter.name in self.required_parameters: |
| 57 | self._reload() |
| 58 | |
| 59 | def _reload(self): |
| 60 | values_filled = True |
| 61 | for param_name in self.required_parameters: |
| 62 | value_wrapper = self._values.get(param_name) |
| 63 | if value_wrapper is None or is_empty(value_wrapper.mapped_script_value): |
| 64 | values_filled = False |
no outgoing calls