Files
lightweight-charts-python/lightweight_charts/table.py

129 lines
4.8 KiB
Python

import random
from typing import Union, Optional, Callable
from .util import jbool, Pane, NUM
class Section(Pane):
def __init__(self, table, section_type):
super().__init__(table.win)
self._table = table
self.type = section_type
def __call__(self, number_of_text_boxes: int, func: Optional[Callable] = None):
if func is not None:
self.win.handlers[self.id] = lambda boxId: func(self._table, int(boxId))
self.run_script(f'''
{self._table.id}.makeSection("{self.id}", "{self.type}", {number_of_text_boxes}, {"true" if func else ""})
''')
def __setitem__(self, key, value):
self.run_script(f'{self._table.id}.{self.type}[{key}].innerText = "{value}"')
class Row(dict):
def __init__(self, table, id, items):
super().__init__()
self.run_script = table.run_script
self._table = table
self.id = id
self.meta = {}
self.run_script(f'{self._table.id}.newRow("{self.id}", {jbool(table.return_clicked_cells)})')
for key, val in items.items():
self[key] = val
def __setitem__(self, column, value):
if isinstance(column, tuple):
[self.__setitem__(col, val) for col, val in zip(column, value)]
return
original_value = value
if column in self._table._formatters:
value = self._table._formatters[column].replace(self._table.VALUE, str(value))
self.run_script(f'{self._table.id}.updateCell("{self.id}", "{column}", "{value}")')
return super().__setitem__(column, original_value)
def background_color(self, column, color): self._style('backgroundColor', column, color)
def text_color(self, column, color): self._style('textColor', column, color)
def _style(self, style, column, arg):
self.run_script(f"{self._table.id}.styleCell({self.id}, '{column}', '{style}', '{arg}')")
def delete(self):
self.run_script(f"{self._table.id}.deleteRow('{self.id}')")
self._table.pop(self.id)
class Table(Pane, dict):
VALUE = 'CELL__~__VALUE__~__PLACEHOLDER'
def __init__(
self,
window,
width: NUM,
height: NUM,
headings: tuple,
widths: Optional[tuple] = None,
alignments: Optional[tuple] = None,
position='left',
draggable: bool = False,
background_color: str = '#121417',
border_color: str = 'rgb(70, 70, 70)',
border_width: int = 1,
heading_text_colors: Optional[tuple] = None,
heading_background_colors: Optional[tuple] = None,
return_clicked_cells: bool = False,
func: Optional[Callable] = None
):
dict.__init__(self)
Pane.__init__(self, window)
self._formatters = {}
self.headings = headings
self.is_shown = True
if return_clicked_cells:
self.win.handlers[self.id] = lambda rId, cId: func(self[rId], cId)
else:
self.win.handlers[self.id] = lambda rId: func(self[rId])
self.return_clicked_cells = return_clicked_cells
self.run_script(f'''
{self.id} = new Table(
{width},
{height},
{list(headings)},
{list(widths) if widths else []},
{list(alignments) if alignments else []},
'{position}',
{jbool(draggable)},
'{background_color}',
'{border_color}',
{border_width},
{list(heading_text_colors) if heading_text_colors else []},
{list(heading_background_colors) if heading_background_colors else []}
)''')
self.run_script(f'{self.id}.callbackName = "{self.id}"') if func else None
self.footer = Section(self, 'footer')
self.header = Section(self, 'header')
def new_row(self, *values, id=None) -> Row:
row_id = random.randint(0, 99_999_999) if not id else id
self[row_id] = Row(self, row_id, {heading: item for heading, item in zip(self.headings, values)})
return self[row_id]
def clear(self): self.run_script(f"{self.id}.clearRows()"), super().clear()
def get(self, __key: Union[int, str]) -> Row: return super().get(int(__key))
def __getitem__(self, item): return super().__getitem__(int(item))
def format(self, column: str, format_str: str): self._formatters[column] = format_str
def resize(self, width: NUM, height: NUM): self.run_script(f'{self.id}.reSize({width}, {height})')
def visible(self, visible: bool):
self.is_shown = visible
self.run_script(f"""
{self.id}.container.style.display = '{'flex' if visible else 'none'}'
{self.id}.container.{'add' if visible else 'remove'}EventListener('mousedown', {self.id}.onMouseDown)
""")