Loading py_mvvm/pyqt6_binding/binding.py +7 −1 Original line number Diff line number Diff line Loading @@ -4,9 +4,15 @@ except: print("PyQt6 is missing. You could install 'py-mvvm[pyqt6]' to fix it") exit(1) import inspect from ..interface import BindingInterface, rsetattr def is_callable(var): return inspect.isfunction(var) or inspect.ismethod(var) class Communicate(QObject): signal = pyqtSignal(object) Loading @@ -19,7 +25,7 @@ class Communicate(QObject): def _update_viewmodel_callback(self, key=None, value=None): if isinstance(self.viewmodel_linked_object, dict): self.viewmodel_linked_object.update({key: value}) elif isinstance(self.viewmodel_linked_object, type(lambda: None)): elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(value) elif isinstance(self.viewmodel_linked_object, object): rsetattr(self.viewmodel_linked_object, key, value) Loading py_mvvm/trame_binding/binding.py +100 −38 Original line number Diff line number Diff line Loading @@ -12,90 +12,152 @@ def is_async(): return False def is_callable(var): return inspect.isfunction(var) or inspect.ismethod(var) class Communicator: def __init__(self, state, viewmodel_linked_object=None, linked_object_attributes=None, callback_after_update=None): self.state = state self.viewmodel_linked_object = viewmodel_linked_object self._set_linked_object_attributes(linked_object_attributes, viewmodel_linked_object) self.connection = None self.viewmodel_callback_after_update = callback_after_update def _set_linked_object_attributes(self, linked_object_attributes, viewmodel_linked_object): self.linked_object_attributes = None if (viewmodel_linked_object and not isinstance(viewmodel_linked_object, dict) and not inspect.isfunction(viewmodel_linked_object)): not is_callable(viewmodel_linked_object)): if not linked_object_attributes: self.linked_object_attributes = {k: v for k, v in viewmodel_linked_object.__dict__.items() if not k.startswith("_")} else: self.linked_object_attributes = linked_object_attributes self.viewmodel_linked_object = viewmodel_linked_object self.state_variable_name = None self.callback_after_update = callback_after_update def connect(self, connector=None): # connect should be called from View side to connect a # GUI element (via it's name in Trame state object) # and a linked_object (passed during bind creation from ViewModel side) if is_callable(connector): self.connection = CallBackConnection(self, connector) else: self.connection = StateConnection(self, connector) return self.connection.get_callback() def update_in_view(self, value): self.connection.update_in_view(value) class CallBackConnection: def __init__(self, communicator: Communicator, callback): self.callback = callback self.communicator = communicator self.viewmodel_linked_object = communicator.viewmodel_linked_object self.viewmodel_callback_after_update = communicator.viewmodel_callback_after_update self.linked_object_attributes = communicator.linked_object_attributes def on_state_update(self, attribute_name, name_in_state): def _update_viewmodel_callback(self, value, key=None): if isinstance(self.viewmodel_linked_object, dict): if key == None: self.viewmodel_linked_object.update(value) else: self.viewmodel_linked_object.update({key: value}) elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(value) elif isinstance(self.viewmodel_linked_object, object): if key == None: raise Exception("Cannot update", self.viewmodel_linked_object, ": key is missing") rsetattr(self.viewmodel_linked_object, key, value) else: raise Exception("Cannot update", self.viewmodel_linked_object) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(key) def update_in_view(self, value): self.callback(value) def get_callback(self): return self._update_viewmodel_callback class StateConnection: def __init__(self, communicator: Communicator, state_variable_name): self.state_variable_name = state_variable_name self.communicator = communicator self.state = communicator.state self.viewmodel_linked_object = communicator.viewmodel_linked_object self.viewmodel_callback_after_update = communicator.viewmodel_callback_after_update self.linked_object_attributes = communicator.linked_object_attributes self._connect() def _on_state_update(self, attribute_name, name_in_state): def update(**kwargs): rsetattr(self.viewmodel_linked_object, attribute_name, self.state[name_in_state]) if self.callback_after_update: self.callback_after_update(attribute_name) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(attribute_name) return update def connect(self, state_variable_name=None): # connect should be called from View side to connect a # GUI element (via it's name in Trame state object) # and a linked_object (passed during bind creation from ViewModel side) self.state_variable_name = state_variable_name def _set_variable_in_state(self, name_in_state, value): if is_async(): with self.state: self.state[name_in_state] = value self.state.dirty(name_in_state) else: self.state[name_in_state] = value self.state.dirty(name_in_state) def _get_name_in_state(self, attribute_name): if self.state_variable_name: name_in_state = f"{self.state_variable_name}_{attribute_name.replace('.', '_')}" else: name_in_state = attribute_name.replace('.', '_') return name_in_state def _connect(self): state_variable_name = self.state_variable_name # we need to make sure state variable exists on connect since if it does not - Trame will not monitor it if state_variable_name: self.state.setdefault(self.state_variable_name, None) self.state.setdefault(state_variable_name, None) for attribute_name in self.linked_object_attributes or []: name_in_state = self.get_name_in_state(attribute_name) name_in_state = self._get_name_in_state(attribute_name) self.state.setdefault(name_in_state, None) # this updates ViewModel on state change if self.viewmodel_linked_object: if self.linked_object_attributes: for attribute_name in self.linked_object_attributes: name_in_state = self.get_name_in_state(attribute_name) f = self.on_state_update(attribute_name, name_in_state) name_in_state = self._get_name_in_state(attribute_name) f = self._on_state_update(attribute_name, name_in_state) self.state.change(name_in_state)(f) else: @self.state.change(state_variable_name) def update_viewmodel_callback(**kwargs): if isinstance(self.viewmodel_linked_object, dict): self.viewmodel_linked_object.update(kwargs[state_variable_name]) elif isinstance(self.viewmodel_linked_object, type(lambda: None)): elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(kwargs[state_variable_name]) else: raise Exception("cannot update", self.viewmodel_linked_object) if self.callback_after_update: self.callback_after_update(state_variable_name) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(state_variable_name) def update_in_view(self, value): # this updates a View (GUI) when called by a ViewModel if self.linked_object_attributes: for attribute_name in self.linked_object_attributes: name_in_state = self.get_name_in_state(attribute_name) name_in_state = self._get_name_in_state(attribute_name) value_to_change = rgetattr(value, attribute_name) self.set_variable_in_state(name_in_state, value_to_change) self._set_variable_in_state(name_in_state, value_to_change) else: self.set_variable_in_state(self.state_variable_name, value) self._set_variable_in_state(self.state_variable_name, value) def set_variable_in_state(self, name_in_state, value): if is_async(): with self.state: self.state[name_in_state] = value self.state.dirty(name_in_state) else: self.state[name_in_state] = value self.state.dirty(name_in_state) def get_name_in_state(self, attribute_name): if self.state_variable_name: name_in_state = f"{self.state_variable_name}_{attribute_name.replace('.', '_')}" else: name_in_state = attribute_name.replace('.', '_') return name_in_state def get_callback(self): return None class TrameBinding(BindingInterface): Loading pyproject.toml +1 −1 Original line number Diff line number Diff line [tool.poetry] name = "py-mvvm" version = "0.1.0" version = "0.2.0" description = "A Python Package for Model-View-ViewModel pattern" authors = ["Yakubov, Sergey <yakubovs@ornl.gov>"] license = "MIT" Loading Loading
py_mvvm/pyqt6_binding/binding.py +7 −1 Original line number Diff line number Diff line Loading @@ -4,9 +4,15 @@ except: print("PyQt6 is missing. You could install 'py-mvvm[pyqt6]' to fix it") exit(1) import inspect from ..interface import BindingInterface, rsetattr def is_callable(var): return inspect.isfunction(var) or inspect.ismethod(var) class Communicate(QObject): signal = pyqtSignal(object) Loading @@ -19,7 +25,7 @@ class Communicate(QObject): def _update_viewmodel_callback(self, key=None, value=None): if isinstance(self.viewmodel_linked_object, dict): self.viewmodel_linked_object.update({key: value}) elif isinstance(self.viewmodel_linked_object, type(lambda: None)): elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(value) elif isinstance(self.viewmodel_linked_object, object): rsetattr(self.viewmodel_linked_object, key, value) Loading
py_mvvm/trame_binding/binding.py +100 −38 Original line number Diff line number Diff line Loading @@ -12,90 +12,152 @@ def is_async(): return False def is_callable(var): return inspect.isfunction(var) or inspect.ismethod(var) class Communicator: def __init__(self, state, viewmodel_linked_object=None, linked_object_attributes=None, callback_after_update=None): self.state = state self.viewmodel_linked_object = viewmodel_linked_object self._set_linked_object_attributes(linked_object_attributes, viewmodel_linked_object) self.connection = None self.viewmodel_callback_after_update = callback_after_update def _set_linked_object_attributes(self, linked_object_attributes, viewmodel_linked_object): self.linked_object_attributes = None if (viewmodel_linked_object and not isinstance(viewmodel_linked_object, dict) and not inspect.isfunction(viewmodel_linked_object)): not is_callable(viewmodel_linked_object)): if not linked_object_attributes: self.linked_object_attributes = {k: v for k, v in viewmodel_linked_object.__dict__.items() if not k.startswith("_")} else: self.linked_object_attributes = linked_object_attributes self.viewmodel_linked_object = viewmodel_linked_object self.state_variable_name = None self.callback_after_update = callback_after_update def connect(self, connector=None): # connect should be called from View side to connect a # GUI element (via it's name in Trame state object) # and a linked_object (passed during bind creation from ViewModel side) if is_callable(connector): self.connection = CallBackConnection(self, connector) else: self.connection = StateConnection(self, connector) return self.connection.get_callback() def update_in_view(self, value): self.connection.update_in_view(value) class CallBackConnection: def __init__(self, communicator: Communicator, callback): self.callback = callback self.communicator = communicator self.viewmodel_linked_object = communicator.viewmodel_linked_object self.viewmodel_callback_after_update = communicator.viewmodel_callback_after_update self.linked_object_attributes = communicator.linked_object_attributes def on_state_update(self, attribute_name, name_in_state): def _update_viewmodel_callback(self, value, key=None): if isinstance(self.viewmodel_linked_object, dict): if key == None: self.viewmodel_linked_object.update(value) else: self.viewmodel_linked_object.update({key: value}) elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(value) elif isinstance(self.viewmodel_linked_object, object): if key == None: raise Exception("Cannot update", self.viewmodel_linked_object, ": key is missing") rsetattr(self.viewmodel_linked_object, key, value) else: raise Exception("Cannot update", self.viewmodel_linked_object) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(key) def update_in_view(self, value): self.callback(value) def get_callback(self): return self._update_viewmodel_callback class StateConnection: def __init__(self, communicator: Communicator, state_variable_name): self.state_variable_name = state_variable_name self.communicator = communicator self.state = communicator.state self.viewmodel_linked_object = communicator.viewmodel_linked_object self.viewmodel_callback_after_update = communicator.viewmodel_callback_after_update self.linked_object_attributes = communicator.linked_object_attributes self._connect() def _on_state_update(self, attribute_name, name_in_state): def update(**kwargs): rsetattr(self.viewmodel_linked_object, attribute_name, self.state[name_in_state]) if self.callback_after_update: self.callback_after_update(attribute_name) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(attribute_name) return update def connect(self, state_variable_name=None): # connect should be called from View side to connect a # GUI element (via it's name in Trame state object) # and a linked_object (passed during bind creation from ViewModel side) self.state_variable_name = state_variable_name def _set_variable_in_state(self, name_in_state, value): if is_async(): with self.state: self.state[name_in_state] = value self.state.dirty(name_in_state) else: self.state[name_in_state] = value self.state.dirty(name_in_state) def _get_name_in_state(self, attribute_name): if self.state_variable_name: name_in_state = f"{self.state_variable_name}_{attribute_name.replace('.', '_')}" else: name_in_state = attribute_name.replace('.', '_') return name_in_state def _connect(self): state_variable_name = self.state_variable_name # we need to make sure state variable exists on connect since if it does not - Trame will not monitor it if state_variable_name: self.state.setdefault(self.state_variable_name, None) self.state.setdefault(state_variable_name, None) for attribute_name in self.linked_object_attributes or []: name_in_state = self.get_name_in_state(attribute_name) name_in_state = self._get_name_in_state(attribute_name) self.state.setdefault(name_in_state, None) # this updates ViewModel on state change if self.viewmodel_linked_object: if self.linked_object_attributes: for attribute_name in self.linked_object_attributes: name_in_state = self.get_name_in_state(attribute_name) f = self.on_state_update(attribute_name, name_in_state) name_in_state = self._get_name_in_state(attribute_name) f = self._on_state_update(attribute_name, name_in_state) self.state.change(name_in_state)(f) else: @self.state.change(state_variable_name) def update_viewmodel_callback(**kwargs): if isinstance(self.viewmodel_linked_object, dict): self.viewmodel_linked_object.update(kwargs[state_variable_name]) elif isinstance(self.viewmodel_linked_object, type(lambda: None)): elif is_callable(self.viewmodel_linked_object): self.viewmodel_linked_object(kwargs[state_variable_name]) else: raise Exception("cannot update", self.viewmodel_linked_object) if self.callback_after_update: self.callback_after_update(state_variable_name) if self.viewmodel_callback_after_update: self.viewmodel_callback_after_update(state_variable_name) def update_in_view(self, value): # this updates a View (GUI) when called by a ViewModel if self.linked_object_attributes: for attribute_name in self.linked_object_attributes: name_in_state = self.get_name_in_state(attribute_name) name_in_state = self._get_name_in_state(attribute_name) value_to_change = rgetattr(value, attribute_name) self.set_variable_in_state(name_in_state, value_to_change) self._set_variable_in_state(name_in_state, value_to_change) else: self.set_variable_in_state(self.state_variable_name, value) self._set_variable_in_state(self.state_variable_name, value) def set_variable_in_state(self, name_in_state, value): if is_async(): with self.state: self.state[name_in_state] = value self.state.dirty(name_in_state) else: self.state[name_in_state] = value self.state.dirty(name_in_state) def get_name_in_state(self, attribute_name): if self.state_variable_name: name_in_state = f"{self.state_variable_name}_{attribute_name.replace('.', '_')}" else: name_in_state = attribute_name.replace('.', '_') return name_in_state def get_callback(self): return None class TrameBinding(BindingInterface): Loading
pyproject.toml +1 −1 Original line number Diff line number Diff line [tool.poetry] name = "py-mvvm" version = "0.1.0" version = "0.2.0" description = "A Python Package for Model-View-ViewModel pattern" authors = ["Yakubov, Sergey <yakubovs@ornl.gov>"] license = "MIT" Loading
