34ce3f7199
Breaking Changes:
- Removed the `api` parameter; callbacks no longer need to be in a specific class.
- Topbar callbacks now take a chart as an argument (see updated callback examples)
- Removed the `topbar` parameter from chart declaration. The Topbar will be automatically created upon declaration of a topbar widget.
- Removed the `searchbox` parameter from charts. It will be created upon subscribing to it in `chart.events`.
- Removed `dynamic_loading`.
- Removed ‘volume_enabled’ parameter. Volume will be enabled if the volumn column is present in the dataframe.
- Widgets’ `func` parameter is now declared last.
- Switchers take a tuple of options rather than a variable number of arguments.
- `add_hotkey` renamed to `hotkey`
- Horizontal lines now take a `func` argument rather than `interactive`. This event will emit the Line object that was moved.
- Removed the `name` parameter from `line.set`. Line object names are now declared upon creation.
Enhancements:
- Added the `button` widget to the Topbar.
- Added the color picker to the drawing context menu.
- Charts now have a `candle_data` method, which returns the current data displayed on the chart as a DataFrame.
- Fixed callbacks are now located in the `chart.events` object:
- search (e.g `chart.events.search += on_search`)
- new_bar
- range_change
- Added volume to the legend
- Drawings can now be accessed through `chart.toolbox.drawings`
- added the `style` and `name` parameters to `create_line`
Bug Fixes:
- Fixed a bug causing new charts not to load after `exit` was called.
- Refactored rayline placement to ensure they do not move the visible range.
- Fixed a bug causing the visible range to shift when trendlines are moved past the final candlestick.
- Fixed a bug preventing trendlines and raylines on irregular timeframes.
- Fixed a bug causing the legend to prevent mouse input into the chart.
86 lines
3.3 KiB
Python
86 lines
3.3 KiB
Python
import random
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from typing import Union
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from .util import jbool
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class Footer:
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def __init__(self, table): self._table = table
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def __setitem__(self, key, value): self._table._run_script(f'{self._table.id}.footer[{key}].innerText = "{value}"')
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def __call__(self, number_of_text_boxes): self._table._run_script(f'{self._table.id}.makeFooter({number_of_text_boxes})')
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class Row(dict):
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def __init__(self, table, id, items):
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super().__init__()
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self._table = table
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self._run_script = table._run_script
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self.id = id
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self.meta = {}
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self._run_script(f'''{self._table.id}.newRow({list(items.values())}, '{self.id}')''')
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for key, val in items.items():
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self[key] = val
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def __setitem__(self, column, value):
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if isinstance(column, tuple):
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return [self.__setitem__(col, val) for col, val in zip(column, value)]
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original_value = value
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if column in self._table._formatters:
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value = self._table._formatters[column].replace(self._table.VALUE, str(value))
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self._run_script(f'{self._table.id}.updateCell("{self.id}", "{column}", "{value}")')
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return super().__setitem__(column, original_value)
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def background_color(self, column, color): self._style('backgroundColor', column, color)
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def text_color(self, column, color): self._style('textColor', column, color)
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def _style(self, style, column, arg):
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self._run_script(f"{self._table.id}.rows[{self.id}]['{column}'].style.{style} = '{arg}'")
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def delete(self):
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self._run_script(f"{self._table.id}.deleteRow('{self.id}')")
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self._table.pop(self.id)
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class Table(dict):
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VALUE = 'CELL__~__VALUE__~__PLACEHOLDER'
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def __init__(self, chart, width, height, headings, widths=None, alignments=None, position='left', draggable=False, func=None):
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super().__init__()
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self._run_script = chart.run_script
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self._chart = chart
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self.headings = headings
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self._formatters = {}
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self.is_shown = True
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self.id = chart._rand.generate()
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chart._handlers[self.id] = lambda rId: func(self[rId])
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self._run_script(f'''
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{self.id} = new Table({width}, {height}, {list(headings)}, {list(widths) if widths else []}, {list(alignments) if alignments else []},
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'{position}', {jbool(draggable)}, {chart.id})
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''')
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self._run_script(f'{self.id}.callbackName = "{self.id}"') if func else None
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self.footer = Footer(self)
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def new_row(self, *values, id=None) -> Row:
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row_id = random.randint(0, 99_999_999) if not id else id
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self[row_id] = Row(self, row_id, {heading: item for heading, item in zip(self.headings, values)})
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return self[row_id]
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def clear(self): self._run_script(f"{self.id}.clearRows()"), super().clear()
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def get(self, __key: Union[int, str]) -> Row: return super().get(int(__key))
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def __getitem__(self, item): return super().__getitem__(int(item))
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def format(self, column: str, format_str: str): self._formatters[column] = format_str
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def visible(self, visible: bool):
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self.is_shown = visible
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self._run_script(f"""
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{self.id}.container.style.display = '{'block' if visible else 'none'}'
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{self.id}.container.{'add' if visible else 'remove'}EventListener('mousedown', {self.id}.onMouseDown)
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""")
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