xframes-python/widgetnode.py at main · xframes-project/xframes-python · GitHub

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from __future__ importannotations
fromabcimportABC, abstractmethod
fromdataclassesimportdataclass, field
fromenumimportEnum
importjson
fromrx.subjectimportBehaviorSubject
fromthemeimportNodeStyle, NodeStyleDef, WidgetStyle, WidgetStyleDef
fromwidgettypesimportWidgetTypes
fromtypingimportAny, Callable, Dict, List, Optional, Union

classBaseComponent(ABC):
def__init__(self, props: Dict[str, Any]):
self.props=BehaviorSubject(props)

@abstractmethod
defrender(self):
raiseNotImplementedError

@dataclass
classWidgetNode:
type: WidgetTypes
props: BehaviorSubject[Dict[str, Any]] =field(default_factory=lambda: BehaviorSubject({}))
children: BehaviorSubject[List[Renderable]] =field(default_factory=lambda: BehaviorSubject([]))

@dataclass
classRawChildlessWidgetNodeWithId:
id: int
type: WidgetTypes
props: Dict[str, Any] =field(default_factory=dict)

defto_serializable_dict(self):
out= {
"id": self.id,
"type": self.type.value,
 }

forkey, valueinself.props.items():
ifnotcallable(value):
out[key] =value

returnout

defwidget_node_factory(widgetType: WidgetTypes, props: Dict[str, Any], children: List[Renderable]) ->WidgetNode:
returnWidgetNode(widgetType, BehaviorSubject(props), BehaviorSubject(children))


defcreate_raw_childless_widget_node_with_id(id: int, node: WidgetNode) ->RawChildlessWidgetNodeWithId:
returnRawChildlessWidgetNodeWithId(id=id, type=node.type, props=node.props.value)

definit_props_with_style(style: Optional[Union[NodeStyle, WidgetStyle]]):
props: Dict[str, Any] = {}

ifstyle:
ifstyle.style:
props["style"] =style.style
ifstyle.activeStyle:
props["activeStyle"] =style.activeStyle
ifstyle.hoverStyle:
props["hoverStyle"] =style.hoverStyle
ifstyle.disabledStyle:
props["disabledStyle"] =style.disabledStyle

returnprops

defroot_node(children: List[Renderable], style: Optional[NodeStyle] =None) ->WidgetNode:
props=init_props_with_style(style)

props["root"] =True

returnwidget_node_factory(WidgetTypes.Node, props, children)

defnode (children: List[Renderable], style: Optional[NodeStyle] =None) ->WidgetNode:
props=init_props_with_style(style)

props["root"] =False

returnwidget_node_factory(WidgetTypes.Node, props, children)

defunformatted_text (text: str, style: Optional[WidgetStyle] =None) ->WidgetNode:
props=init_props_with_style(style)

props["text"] =text

returnwidget_node_factory(WidgetTypes.UnformattedText, props, [])

defbutton (label: str, on_click: Optional[Callable] =None, style: Optional[WidgetStyle] =None) ->WidgetNode:
ifon_clickisnotNoneandnotcallable(on_click):
raiseTypeError("on_click must be a callable")

props=init_props_with_style(style)

props["label"] =label

ifon_click:
props["on_click"] =on_click

returnwidget_node_factory(WidgetTypes.Button, props, [])

Renderable=Union[BaseComponent, WidgetNode]

classRawChildlessWidgetNodeWithIdEncoder(json.JSONEncoder):
defdefault(self, obj):
ifisinstance(obj, Enum):
returnobj.value
ifcallable(obj):
returnNone
ifisinstance(obj, WidgetStyleDef):
returnobj.to_dict()
ifisinstance(obj, NodeStyleDef):
returnobj.to_dict()
returnsuper().default(obj)