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I can add a new column and a new row

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This commit is contained in:
Kodjo Sossouvi
2026-02-26 22:44:35 +01:00
parent b383b1bc8b
commit c07b75ee72
10 changed files with 311 additions and 108 deletions
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12
docs/DataGrid.md
View File

@@ -151,18 +151,6 @@ The DataGrid automatically detects column types from pandas dtypes:
| `datetime64` | Datetime | Formatted date |
| `object`, others | Text | Left-aligned, truncated |
### Row Index Column
By default, the DataGrid displays a row index column on the left. This can be useful for identifying rows:
```python
# Row index is enabled by default
grid._state.row_index = True
# To disable the row index column
grid._state.row_index = False
grid.init_from_dataframe(df)
```
## Column Features

35
src/myfasthtml/assets/datagrid/datagrid.css
View File

@@ -12,7 +12,6 @@
display: flex;
width: 100%;
font-size: var(--text-xl);
margin: 4px 0;
}
/* Body */
@@ -45,6 +44,40 @@
user-select: none;
}
.dt2-last-cell {
border-right: 1px solid var(--color-border);
}
.dt2-add-column {
display: flex;
align-items: center;
justify-content: center;
border-bottom: 1px solid var(--color-border);
width: 24px;
}
.dt2-add-row {
display: flex;
align-items: center;
justify-content: center;
border-bottom: 1px solid var(--color-border);
border-right: 1px solid var(--color-border);
width: 24px;
min-width: 24px;
min-height: 20px;
}
.dt2-row-selection {
display: flex;
align-items: center;
justify-content: center;
border-bottom: 1px solid var(--color-border);
border-right: 1px solid var(--color-border);
min-width: 24px;
min-height: 20px;
}
/* Cell content types */
.dt2-cell-content-text {
text-align: inherit;

212
src/myfasthtml/controls/DataGrid.py
View File

@@ -17,14 +17,14 @@ from myfasthtml.controls.DataGridFormattingEditor import DataGridFormattingEdito
from myfasthtml.controls.DslEditor import DslEditorConf
from myfasthtml.controls.IconsHelper import IconsHelper
from myfasthtml.controls.Keyboard import Keyboard
from myfasthtml.controls.Mouse import Mouse
from myfasthtml.controls.Panel import Panel, PanelConf
from myfasthtml.controls.Query import Query, QUERY_FILTER
from myfasthtml.controls.datagrid_objects import DataGridColumnState, DataGridRowState, \
DatagridSelectionState, DataGridHeaderFooterConf, DatagridEditionState
from myfasthtml.controls.helpers import mk, column_type_defaults
from myfasthtml.core.commands import Command
from myfasthtml.core.constants import ColumnType, ROW_INDEX_ID, FooterAggregation, DATAGRID_PAGE_SIZE, FILTER_INPUT_CID
from myfasthtml.core.constants import ColumnType, ROW_INDEX_ID, FooterAggregation, DATAGRID_PAGE_SIZE, FILTER_INPUT_CID, \
ROW_SELECTION_ID
from myfasthtml.core.dbmanager import DbObject
from myfasthtml.core.dsls import DslsManager
from myfasthtml.core.formatting.dsl.completion.FormattingCompletionEngine import FormattingCompletionEngine
@@ -36,7 +36,7 @@ from myfasthtml.core.optimized_ft import OptimizedDiv
from myfasthtml.core.utils import make_safe_id, merge_classes, make_unique_safe_id, is_null
from myfasthtml.icons.carbon import row, column, grid
from myfasthtml.icons.fluent import checkbox_unchecked16_regular
from myfasthtml.icons.fluent_p2 import checkbox_checked16_regular, column_edit20_regular
from myfasthtml.icons.fluent_p2 import checkbox_checked16_regular, column_edit20_regular, add12_filled
from myfasthtml.icons.fluent_p3 import text_edit_style20_regular
# OPTIMIZATION: Pre-compiled regex to detect HTML special characters
@@ -70,7 +70,6 @@ class DatagridState(DbObject):
super().__init__(owner, name=f"{owner.get_id()}#state", save_state=save_state)
self.sidebar_visible: bool = False
self.selected_view: str = None
self.row_index: bool = True
self.columns: list[DataGridColumnState] = []
self.rows: list[DataGridRowState] = [] # only the rows that have a specific state
self.headers: list[DataGridHeaderFooterConf] = []
@@ -99,12 +98,14 @@ class DatagridSettings(DbObject):
self.open_settings_visible: bool = True
self.text_size: str = "sm"
self.enable_formatting: bool = True
self.enable_edition: bool = True
class DatagridStore(DbObject):
"""
Store Dataframes
"""
def __init__(self, owner, save_state):
with self.initializing():
super().__init__(owner, name=f"{owner.get_id()}#df", save_state=save_state)
@@ -187,16 +188,35 @@ class Commands(BaseCommands):
return Command("ToggleColumnsManager",
"Hide/Show Columns Manager",
self._owner,
self._owner.toggle_columns_manager
self._owner.handle_toggle_columns_manager
).htmx(target=None)
def toggle_new_column_editor(self):
return Command("ToggleNewColumnEditor",
"Add New Column",
self._owner,
self._owner.handle_toggle_new_column_editor,
icon=add12_filled,
).htmx(target=None)
def toggle_formatting_editor(self):
return Command("ToggleFormattingEditor",
"Hide/Show Formatting Editor",
self._owner,
self._owner.toggle_formatting_editor
self._owner.handle_toggle_formatting_editor
).htmx(target=None)
def add_row(self):
return Command("AddRow",
"Add row",
self._owner,
self._owner.handle_add_row,
icon=add12_filled,
).htmx(target=f"#tr_{self._id}-last",
swap="outerHTML",
auto_swap_oob=False
)
def on_column_changed(self):
return Command("OnColumnChanged",
"Column definition changed",
@@ -213,6 +233,7 @@ class DataGrid(MultipleInstance):
self._state = DatagridState(self, save_state=self._settings.save_state)
self._df_store = DatagridStore(self, save_state=self._settings.save_state)
self._formatting_engine = FormattingEngine()
self._columns = None
self.commands = Commands(self)
self.init_from_dataframe(self._df_store.ne_df, init_state=False) # data comes from DatagridStore
@@ -220,6 +241,7 @@ class DataGrid(MultipleInstance):
self._panel = Panel(self, conf=PanelConf(show_display_right=False), _id="-panel")
self._panel.set_side_visible("right", False) # the right Panel always starts closed
self.bind_command("ToggleColumnsManager", self._panel.commands.toggle_side("right"))
self.bind_command("ToggleNewColumnEditor", self._panel.commands.set_side_visible("right", True))
self.bind_command("ToggleFormattingEditor", self._panel.commands.toggle_side("right"))
# add Query
@@ -421,6 +443,14 @@ class DataGrid(MultipleInstance):
# Get global tables formatting from manager
return self._parent.all_tables_formats
def _init_columns(self):
self._columns = self._state.columns.copy()
if self._settings.enable_edition:
self._columns.insert(0, DataGridColumnState(ROW_SELECTION_ID,
-1,
"",
ColumnType.RowSelection_))
def init_from_dataframe(self, df, init_state=True):
def _get_column_type(dtype):
@@ -441,8 +471,6 @@ class DataGrid(MultipleInstance):
col_id,
_get_column_type(self._df[make_safe_id(col_id)].dtype))
for col_index, col_id in enumerate(_df.columns)]
if self._state.row_index:
columns.insert(0, DataGridColumnState(make_safe_id(ROW_INDEX_ID), -1, " ", ColumnType.RowIndex))
return columns
@@ -494,6 +522,8 @@ class DataGrid(MultipleInstance):
self._df_store.save()
self._state.rows = [] # sparse: only rows with non-default state are stored
self._state.columns = _init_columns(df) # use df not self._df to keep the original title
self._init_columns()
self._df_store.ns_fast_access = _init_fast_access(self._df)
self._df_store.ns_row_data = _init_row_data(self._df)
self._df_store.ns_total_rows = len(self._df) if self._df is not None else 0
@@ -532,15 +562,75 @@ class DataGrid(MultipleInstance):
row_dict[col_def.col_id] = default_value
self._df_store.save()
def handle_set_column_width(self, col_id: str, width: str):
"""Update column width after resize. Called via Command from JS."""
logger.debug(f"set_column_width: {col_id=} {width=}")
for col in self._state.columns:
if col.col_id == col_id:
col.width = int(width)
break
def add_new_row(self, row_data: dict = None) -> None:
"""Add a new row to the DataGrid with incremental updates.
self._state.save()
Creates default values based on column types and handles formula columns.
Updates ns_fast_access and ns_row_data incrementally for better performance.
Args:
row_data: Optional dict with initial values. If None, uses type defaults.
"""
import numpy as np
def _get_default_value(col_def: DataGridColumnState):
"""Get default value for a column based on its type."""
if col_def.type == ColumnType.Formula:
return None # Will be calculated by FormulaEngine
return column_type_defaults.get(col_def.type, "")
if row_data is None:
# Create default values for all non-formula, non-selection columns
row_data = {}
for col in self._state.columns:
if col.type not in (ColumnType.Formula, ColumnType.RowSelection_):
row_data[col.col_id] = _get_default_value(col)
# 1. Add row to DataFrame (only non-formula columns)
new_index = len(self._df)
self._df.loc[new_index] = row_data
# 2. Incremental update of ns_fast_access
for col_id, value in row_data.items():
if col_id in self._df_store.ns_fast_access:
self._df_store.ns_fast_access[col_id] = np.append(
self._df_store.ns_fast_access[col_id],
value
)
else:
# First value for this column (rare case)
self._df_store.ns_fast_access[col_id] = np.array([value])
# Update row index
if ROW_INDEX_ID in self._df_store.ns_fast_access:
self._df_store.ns_fast_access[ROW_INDEX_ID] = np.append(
self._df_store.ns_fast_access[ROW_INDEX_ID],
new_index
)
else:
self._df_store.ns_fast_access[ROW_INDEX_ID] = np.array([new_index])
# 3. Incremental update of ns_row_data
self._df_store.ns_row_data.append(row_data.copy())
# 4. Handle formula columns
engine = self.get_formula_engine()
if engine is not None:
table_name = self.get_table_name()
# Check if there are any formula columns
has_formulas = any(col.type == ColumnType.Formula for col in self._state.columns)
if has_formulas:
try:
# Recalculate all formulas (engine handles efficiency)
engine.recalculate_if_needed(table_name, self._df_store)
except Exception as e:
logger.warning(f"Failed to calculate formulas for new row: {e}")
# 5. Update total row count
self._df_store.ns_total_rows = len(self._df)
# Save changes
self._df_store.save()
def move_column(self, source_col_id: str, target_col_id: str):
"""Move column to new position. Called via Command from JS."""
@@ -569,6 +659,7 @@ class DataGrid(MultipleInstance):
self._state.columns.insert(target_idx, col)
else:
self._state.columns.insert(target_idx, col)
self._init_columns()
self._state.save()
@@ -688,16 +779,46 @@ class DataGrid(MultipleInstance):
self._state.save()
return self.render_partial()
def toggle_columns_manager(self):
def handle_toggle_columns_manager(self):
logger.debug(f"toggle_columns_manager")
self._panel.set_title(side="right", title="Columns")
self._columns_manager.adding_new_column = False
self._columns_manager.set_all_columns(True)
self._columns_manager.unbind_command(("ShowAllColumns", "SaveColumnDetails"))
self._panel.set_right(self._columns_manager)
def toggle_formatting_editor(self):
def handle_toggle_new_column_editor(self):
logger.debug(f"handle_toggle_new_column_editor")
self._panel.set_title(side="right", title="Columns")
self._columns_manager.adding_new_column = True
self._columns_manager.set_all_columns(False)
self._columns_manager.bind_command(("ShowAllColumns", "SaveColumnDetails"),
self._panel.commands.set_side_visible("right", False))
self._panel.set_right(self._columns_manager)
def handle_toggle_formatting_editor(self):
logger.debug(f"toggle_formatting_editor")
self._panel.set_title(side="right", title="Formatting")
self._panel.set_right(self._formatting_editor)
def handle_set_column_width(self, col_id: str, width: str):
"""Update column width after resize. Called via Command from JS."""
logger.debug(f"set_column_width: {col_id=} {width=}")
for col in self._state.columns:
if col.col_id == col_id:
col.width = int(width)
break
self._state.save()
def handle_add_row(self):
self.add_new_row() # Add row to data
row_index = len(self._df) - 1 # Index of the newly added row
len_columns_1 = len(self._columns) - 1
rows = [self.mk_row(row_index, None, len_columns_1)]
self._mk_append_add_row_if_needed(rows)
return rows
def save_state(self):
self._state.save()
@@ -734,6 +855,9 @@ class DataGrid(MultipleInstance):
if not col_def.visible:
return None
if col_def.type == ColumnType.RowSelection_:
return Div(cls="dt2-row-selection")
return Div(
_mk_header_name(col_def),
Div(cls="dt2-resize-handle", data_command_id=resize_cmd.id, data_reset_command_id=reset_cmd.id),
@@ -744,8 +868,13 @@ class DataGrid(MultipleInstance):
)
header_class = "dt2-header"
header_columns = [_mk_header(col_def) for col_def in self._columns]
if self._settings.enable_edition:
header_columns.append(Div(
mk.icon(command=self.commands.toggle_new_column_editor(), size=16),
cls="dt2-add-column"))
return Div(
*[_mk_header(col_def) for col_def in self._state.columns],
*header_columns,
cls=header_class,
id=f"th_{self._id}",
data_move_command_id=move_cmd.id
@@ -841,7 +970,7 @@ class DataGrid(MultipleInstance):
else:
return mk_highlighted_text(value_str, merge_classes("dt2-cell-content-text", cls), css_string)
def mk_body_cell(self, col_pos, row_index, col_def: DataGridColumnState, filter_keyword_lower=None):
def mk_body_cell(self, col_pos, row_index, col_def: DataGridColumnState, filter_keyword_lower, is_last):
"""
OPTIMIZED: Accepts pre-computed filter_keyword_lower to avoid repeated dict lookups.
OPTIMIZED: Uses OptimizedDiv instead of Div for faster rendering.
@@ -849,6 +978,9 @@ class DataGrid(MultipleInstance):
if not col_def.visible:
return None
if col_def.type == ColumnType.RowSelection_:
return OptimizedDiv(cls="dt2-row-selection")
col_array = self._df_store.ns_fast_access.get(col_def.col_id)
value = col_array[row_index] if col_array is not None and row_index < len(col_array) else None
content = self.mk_body_cell_content(col_pos, row_index, col_def, filter_keyword_lower)
@@ -858,7 +990,23 @@ class DataGrid(MultipleInstance):
data_tooltip=str(value),
style=f"width:{col_def.width}px;",
id=self._get_element_id_from_pos("cell", (col_pos, row_index)),
cls="dt2-cell")
cls=merge_classes("dt2-cell", "dt2-last-cell" if is_last else None))
def mk_row(self, row_index, filter_keyword_lower, len_columns_1):
return OptimizedDiv(
*[self.mk_body_cell(col_pos, row_index, col_def, filter_keyword_lower, col_pos == len_columns_1)
for col_pos, col_def in enumerate(self._columns)],
cls="dt2-row",
data_row=f"{row_index}",
id=f"tr_{self._id}-{row_index}",
)
def _mk_append_add_row_if_needed(self, rows):
if self._settings.enable_edition:
rows.append(Div(
mk.icon(command=self.commands.add_row(), size=16),
cls="dt2-add-row",
id=f"tr_{self._id}-last"))
def mk_body_content_page(self, page_index: int):
"""
@@ -872,22 +1020,16 @@ class DataGrid(MultipleInstance):
start = page_index * DATAGRID_PAGE_SIZE
end = start + DATAGRID_PAGE_SIZE
if self._df_store.ns_total_rows > end:
last_row = df.index[end - 1]
else:
last_row = None
filter_keyword = self._state.filtered.get(FILTER_INPUT_CID)
filter_keyword_lower = filter_keyword.lower() if filter_keyword else None
len_columns_1 = len(self._columns) - 1
rows = [OptimizedDiv(
*[self.mk_body_cell(col_pos, row_index, col_def, filter_keyword_lower)
for col_pos, col_def in enumerate(self._state.columns)],
cls="dt2-row",
data_row=f"{row_index}",
id=f"tr_{self._id}-{row_index}",
**self.commands.get_page(page_index + 1).get_htmx_params(escaped=True) if row_index == last_row else {}
) for row_index in df.index[start:end]]
rows = [self.mk_row(row_index, filter_keyword_lower, len_columns_1) for row_index in df.index[start:end]]
if self._df_store.ns_total_rows > end:
rows[-1].attrs.extend(self.commands.get_page(page_index + 1).get_htmx_params(escaped=True))
self._mk_append_add_row_if_needed(rows)
return rows
@@ -907,7 +1049,7 @@ class DataGrid(MultipleInstance):
def mk_footers(self):
return Div(
*[Div(
*[self.mk_aggregation_cell(col_def, row_index, footer) for col_def in self._state.columns],
*[self.mk_aggregation_cell(col_def, row_index, footer) for col_def in self._columns],
id=f"tf_{self._id}",
data_row=f"{row_index}",
cls="dt2-row dt2-row-footer",
@@ -1059,7 +1201,7 @@ class DataGrid(MultipleInstance):
cls="flex items-center justify-between mb-2"),
self._panel.set_main(self.mk_table_wrapper()),
Script(f"initDataGrid('{self._id}');"),
Mouse(self, combinations=self._mouse_support, _id="-mouse"),
# Mouse(self, combinations=self._mouse_support, _id="-mouse"),
Keyboard(self, combinations=self._key_support, _id="-keyboard"),
id=self._id,
cls="grid",

47
src/myfasthtml/controls/DataGridColumnsManager.py
View File

@@ -10,7 +10,7 @@ from myfasthtml.controls.Search import Search
from myfasthtml.controls.datagrid_objects import DataGridColumnState
from myfasthtml.controls.helpers import mk
from myfasthtml.core.commands import Command
from myfasthtml.core.constants import ColumnType
from myfasthtml.core.constants import ColumnType, get_columns_types
from myfasthtml.core.dsls import DslsManager
from myfasthtml.core.formula.dsl.completion.FormulaCompletionEngine import FormulaCompletionEngine
from myfasthtml.core.formula.dsl.parser import FormulaParser
@@ -39,21 +39,21 @@ class Commands(BaseCommands):
return Command(f"ShowAllColumns",
f"Show all columns",
self._owner,
self._owner.show_all_columns).htmx(target=f"#{self._id}", swap="innerHTML")
self._owner.handle_show_all_columns).htmx(target=f"#{self._id}", swap="innerHTML")
def save_column_details(self, col_id):
return Command(f"SaveColumnDetails",
f"Save column {col_id}",
self._owner,
self._owner.save_column_details,
self._owner.handle_save_column_details,
kwargs={"col_id": col_id}
).htmx(target=f"#{self._id}", swap="innerHTML")
def on_new_column(self):
return Command(f"OnNewColumn",
f"New column",
def add_new_column(self):
return Command(f"AddNewColumn",
f"Add a new column",
self._owner,
self._owner.on_new_column).htmx(target=f"#{self._id}", swap="innerHTML")
self._owner.handle_add_new_column).htmx(target=f"#{self._id}", swap="innerHTML")
def on_column_type_changed(self):
return Command(f"OnColumnTypeChanged",
@@ -66,7 +66,8 @@ class DataGridColumnsManager(MultipleInstance):
def __init__(self, parent, _id=None):
super().__init__(parent, _id=_id)
self.commands = Commands(self)
self._new_column = False
self.adding_new_column = False
self._all_columns = True # Do not return to all_columns after column details
completion_engine = FormulaCompletionEngine(
self._parent._parent,
@@ -109,6 +110,9 @@ class DataGridColumnsManager(MultipleInstance):
return col_def
def set_all_columns(self, all_columns):
self._all_columns = all_columns
def toggle_column(self, col_id):
logger.debug(f"toggle_column {col_id=}")
col_def = self._get_col_def_from_col_id(col_id, copy=False)
@@ -129,22 +133,24 @@ class DataGridColumnsManager(MultipleInstance):
return self.mk_column_details(col_def)
def show_all_columns(self):
return self._mk_inner_content()
def handle_show_all_columns(self):
self.adding_new_column = False
return self._mk_inner_content() if self._all_columns else None
def save_column_details(self, col_id, client_response):
def handle_save_column_details(self, col_id, client_response):
logger.debug(f"save_column_details {col_id=}, {client_response=}")
col_def = self._get_updated_col_def_from_col_id(col_id, client_response, copy=False)
if col_def.col_id == "__new__":
self._parent.add_new_column(col_def) # sets the correct col_id before _register_formula
self.adding_new_column = False
self._register_formula(col_def)
self._parent.save_state()
return self._mk_inner_content()
return self._mk_inner_content() if self._all_columns else None
def on_new_column(self):
self._new_column = True
col_def = self._get_updated_col_def_from_col_id("__new__")
def handle_add_new_column(self):
self.adding_new_column = True
col_def = DataGridColumnState("__new__", -1)
return self.mk_column_details(col_def)
def on_column_type_changed(self, col_id, client_response):
@@ -192,6 +198,7 @@ class DataGridColumnsManager(MultipleInstance):
def mk_column_details(self, col_def: DataGridColumnState):
size = "sm"
return Div(
mk.label("Back", icon=chevron_left20_regular, command=self.commands.show_all_columns()),
Form(
@@ -210,7 +217,9 @@ class DataGridColumnsManager(MultipleInstance):
Label("type"),
mk.mk(
Select(
*[Option(option.value, value=option.value, selected=option == col_def.type) for option in ColumnType],
*[Option(option.value,
value=option.value,
selected=option == col_def.type) for option in get_columns_types()],
name="type",
cls=f"select select-{size}",
value=col_def.title,
@@ -260,11 +269,15 @@ class DataGridColumnsManager(MultipleInstance):
def mk_new_column(self):
return Div(
mk.button("New Column", command=self.commands.on_new_column()),
mk.button("New Column", command=self.commands.add_new_column()),
cls="mb-1",
)
def _mk_inner_content(self):
if self.adding_new_column:
col_def = DataGridColumnState("__new__", -1)
return self.mk_column_details(col_def)
return (self.mk_all_columns(),
self.mk_new_column())

7
src/myfasthtml/controls/IconsHelper.py
View File

@@ -1,3 +1,5 @@
from fastcore.basics import NotStr
from myfasthtml.core.constants import ColumnType
from myfasthtml.icons.fluent import question20_regular, brain_circuit20_regular, number_symbol20_regular, \
number_row20_regular
@@ -13,7 +15,7 @@ default_icons = {
False: checkbox_unchecked20_regular,
"Brain": brain_circuit20_regular,
"QuestionMark" : question20_regular,
"QuestionMark": question20_regular,
# TreeView icons
"TreeViewFolder": folder20_regular,
@@ -46,6 +48,9 @@ class IconsHelper:
:return: The requested icon resource if found; otherwise, returns None.
:rtype: object or None
"""
if isinstance(name, NotStr):
return name
if name in IconsHelper._icons:
return IconsHelper._icons[name]

3
src/myfasthtml/controls/Menu.py
View File

@@ -43,6 +43,9 @@ class Menu(MultipleInstance):
}
def _mk_menu(self, command_name):
if not isinstance(command_name, str):
return command_name
command = self.usable_commands.get(command_name)
return mk.icon(command.icon or IconsHelper.get("QuestionMark"),
command=command,

4
src/myfasthtml/controls/Panel.py
View File

@@ -64,8 +64,8 @@ class PanelState(DbObject):
class Commands(BaseCommands):
def set_side_visible(self, side: Literal["left", "right"], visible: bool = None):
return Command("TogglePanelSide",
f"Toggle {side} side panel",
return Command("SetVisiblePanelSide",
f"Open / Close {side} side panel",
self._owner,
self._owner.set_side_visible,
args=[side, visible]).htmx(target=f"#{self._owner.get_ids().panel(side)}")

4
src/myfasthtml/core/commands.py
View File

@@ -151,7 +151,7 @@ class Command:
before_commands = [bc for bc in self.owner.get_bound_commands(self.name) if bc.when == "before"]
for bound_cmd in before_commands:
logger.debug(f" will execute bound command {bound_cmd.command.name} BEFORE...")
r = bound_cmd.command.execute() # client_response should not be forwarded as it's not the same command
r = bound_cmd.command.execute(client_response)
ret_from_before_commands.append(r)
# Execute main callback
@@ -166,7 +166,7 @@ class Command:
after_commands = [bc for bc in self.owner.get_bound_commands(self.name) if bc.when == "after"]
for bound_cmd in after_commands:
logger.debug(f" will execute bound command {bound_cmd.command.name} AFTER...")
r = bound_cmd.command.execute() # client_response should not be forwarded as it's not the same command
r = bound_cmd.command.execute(client_response)
ret_from_after_commands.append(r)
all_ret = flatten(ret, ret_from_before_commands, ret_from_after_commands, collector.results)

6
src/myfasthtml/core/constants.py
View File

@@ -6,6 +6,7 @@ ROUTE_ROOT = "/myfasthtml"
# Datagrid
ROW_INDEX_ID = "__row_index__"
ROW_SELECTION_ID = "__row_selection__"
DATAGRID_DEFAULT_COLUMN_WIDTH = 100
DATAGRID_PAGE_SIZE = 1000
FILTER_INPUT_CID = "__filter_input__"
@@ -19,6 +20,7 @@ class Routes:
class ColumnType(Enum):
RowSelection_ = "RowSelection_"
RowIndex = "RowIndex"
Text = "Text"
Number = "Number"
@@ -29,6 +31,10 @@ class ColumnType(Enum):
Formula = "Formula"
def get_columns_types() -> list[ColumnType]:
return [c for c in ColumnType if not c.value.endswith("_")]
class ViewType(Enum):
Table = "Table"
Chart = "Chart"

39
src/myfasthtml/core/instances.py
View File

@@ -1,9 +1,9 @@
import logging
import uuid
from typing import Optional
from typing import Optional, Literal
from myfasthtml.controls.helpers import Ids
from myfasthtml.core.commands import BoundCommand
from myfasthtml.core.commands import BoundCommand, Command
from myfasthtml.core.constants import NO_DEFAULT_VALUE
from myfasthtml.core.utils import pascal_to_snake, get_class, snake_to_pascal
@@ -113,7 +113,10 @@ class BaseInstance:
parent = self.get_parent()
return parent.get_full_id() if parent else None
def bind_command(self, command, command_to_bind, when="after"):
def bind_command(self,
command: Command | str | tuple | list,
command_to_bind,
when: Literal["before", "after"] = "after"):
"""
Bind a command to another command.
@@ -126,18 +129,28 @@ class BaseInstance:
Duplicate bindings are automatically prevented using two mechanisms:
1. Check if the same binding already exists
"""
command_name = command.name if hasattr(command, "name") else command
# Protection 1: Check if this binding already exists to prevent duplicates
existing_bindings = self._bound_commands.get(command_name, [])
for existing in existing_bindings:
if existing.command.name == command_to_bind.name and existing.when == when:
# Binding already exists, don't add it again
return
def _bind(_command_name, _command_to_bind, _when):
# Check if this binding already exists to prevent duplicates
existing_bindings = self._bound_commands.get(_command_name, [])
for existing in existing_bindings:
if existing.command.name == _command_to_bind.name and existing.when == _when:
return # Binding already exists, don't add it again
# Add new binding
bound = BoundCommand(command=command_to_bind, when=when)
self._bound_commands.setdefault(command_name, []).append(bound)
# Add new binding
bound = BoundCommand(command=_command_to_bind, when=_when)
self._bound_commands.setdefault(command_name, []).append(bound)
commands = [command] if isinstance(command, (str, Command)) else command
for c in commands:
command_name = c.name if hasattr(c, "name") else c
_bind(c, command_to_bind, when)
def unbind_command(self, command: Command | str | tuple | list):
commands = [command] if isinstance(command, (str, Command)) else command
for c in commands:
command_name = c.name if hasattr(c, "name") else c
self._bound_commands.pop(command_name, None)
def get_bound_commands(self, command_name):
return self._bound_commands.get(command_name, [])