forked from ScoDoc/ScoDoc
524 lines
17 KiB
Python
524 lines
17 KiB
Python
##############################################################################
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# ScoDoc
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# Copyright (c) 1999 - 2023 Emmanuel Viennet. All rights reserved.
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# See LICENSE
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##############################################################################
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"""Classes pour aider à construire des tables de résultats
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"""
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from collections import defaultdict
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from openpyxl import Workbook
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from openpyxl.utils import get_column_letter
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from app.scodoc import sco_excel
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class Element:
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"Element de base pour les tables"
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def __init__(
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self,
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elt: str,
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content=None,
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classes: list[str] = None,
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attrs: dict[str, str] = None,
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data: dict = None,
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):
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self.elt = elt
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self.attrs = attrs or {}
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self.classes = classes or []
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"list of classes for the element"
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self.content = content
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self.data = data or {}
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"data-xxx"
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def html(self, extra_classes: set[str] = None) -> str:
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"html for element"
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classes = [cls for cls in (self.classes + (list(extra_classes or []))) if cls]
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attrs_str = f"""class="{' '.join(classes)}" """ if classes else ""
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# Autres attributs:
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attrs_str += " " + " ".join([f'{k}="{v}"' for (k, v) in self.attrs.items()])
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# et data-x
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attrs_str += " " + " ".join([f'data-{k}="{v}"' for k, v in self.data.items()])
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return f"""<{self.elt} {attrs_str}>{self.html_content()}</{self.elt}>"""
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def html_content(self) -> str:
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"Le contenu de l'élément, en html."
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return str(self.content or "")
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def add_class(self, klass: str):
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"Add a class, do nothing if already there"
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if klass not in self.classes:
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self.classes.append(klass)
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class Table(Element):
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"""Construction d'une table de résultats
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Ordre des colonnes: groupées par groupes, et dans chaque groupe par ordre d'insertion
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On fixe l'ordre des groupes par ordre d'insertion
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ou par insert_group ou par set_column_groups.
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"""
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def __init__(
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self,
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selected_row_id: str = None,
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classes: list[str] = None,
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attrs: dict[str, str] = None,
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data: dict = None,
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row_class=None,
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xls_sheet_name="feuille",
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xls_before_table=[], # liste de cellules a placer avant la table
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xls_style_base=None, # style excel pour les cellules
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xls_columns_width=None, # { col_id : largeur en "pixels excel" }
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caption="",
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origin="",
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):
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super().__init__("table", classes=classes, attrs=attrs, data=data)
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self.row_class = row_class or Row
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self.rows: list["Row"] = []
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"ordered list of Rows"
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self.row_by_id: dict[str, "Row"] = {}
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self.column_ids = []
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"ordered list of columns ids"
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self.groups = []
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"ordered list of column groups names"
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self.group_titles = {}
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"title (in header top row) for the group"
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self.head = []
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self.foot = []
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self.column_group = {}
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"the group of the column: { col_id : group }"
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self.column_classes: defaultdict[str, set[str]] = defaultdict(set)
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"classe ajoutée à toutes les cellules de la colonne: { col_id : class }"
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self.selected_row_id = selected_row_id
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"l'id de la ligne sélectionnée"
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self.titles = {}
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"Column title: { col_id : titre }"
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self.head_title_row: "Row" = Row(
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self, "title_head", cell_elt="th", classes=["titles"]
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)
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self.foot_title_row: "Row" = Row(
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self, "title_foot", cell_elt="th", classes=["titles"]
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)
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self.empty_cell = Cell.empty()
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# Excel (xls) spécifique:
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self.xls_before_table = xls_before_table
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self.xls_columns_width = xls_columns_width or {}
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self.xls_sheet_name = xls_sheet_name
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self.xls_style_base = xls_style_base
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#
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self.caption = caption
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self.origin = origin
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def _prepare(self):
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"""Prepare the table before generation:
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Sort table columns, add header/footer titles rows
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"""
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self.sort_columns()
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# Titres
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self.add_head_row(self.head_title_row)
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self.add_foot_row(self.foot_title_row)
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def get_row_by_id(self, row_id) -> "Row":
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"return the row, or None"
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return self.row_by_id.get(row_id)
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def __len__(self):
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"nombre de lignes dans le corps de la table"
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return len(self.rows)
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def is_empty(self) -> bool:
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"true if table has no rows"
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return len(self.rows) == 0
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def select_row(self, row_id):
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"mark rows as 'selected'"
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self.selected_row_id = row_id
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def to_list(self) -> list[dict]:
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"""as a list, each row is a dict (sans les lignes d'en-tête ni de pied de table)"""
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self._prepare()
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return [row.to_dict() for row in self.rows]
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def html(self, extra_classes: list[str] = None) -> str:
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"""HTML version of the table"""
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self._prepare()
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return super().html(extra_classes=extra_classes)
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def html_content(self) -> str:
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"""Le contenu de la table en html."""
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newline = "\n"
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header = (
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f"""
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<thead>
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{ newline.join(row.html() for row in self.head) }
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</thead>
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"""
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if self.head
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else ""
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)
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footer = (
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f"""
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<tfoot>
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{ newline.join(row.html() for row in self.foot) }
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</tfoot>
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"""
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if self.foot
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else ""
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)
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return f"""
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{header}
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<tbody>
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{
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newline.join(row.html() for row in self.rows)
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}
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</tbody>
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{footer}
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"""
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def add_row(self, row: "Row") -> "Row":
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"""Append a new row"""
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self.rows.append(row)
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self.row_by_id[row.id] = row
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return row
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def add_head_row(self, row: "Row") -> "Row":
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"Add a row to table head"
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self.head.append(row)
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self.row_by_id[row.id] = row
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return row
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def add_foot_row(self, row: "Row") -> "Row":
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"Add a row to table foot"
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self.foot.append(row)
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self.row_by_id[row.id] = row
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return row
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def add_groups_header(self):
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"""Insert a header line at the top of the table
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with a multicolumn th cell per group
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"""
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self.sort_columns()
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groups_header = RowGroupsHeader(
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self, "groups_header", classes=["groups_header"]
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)
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self.head.insert(0, groups_header)
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def sort_rows(self, key: callable, reverse: bool = False):
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"""Sort table rows"""
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self.rows.sort(key=key, reverse=reverse)
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def sort_columns(self):
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"""Sort columns ids"""
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groups_order = {group: i for i, group in enumerate(self.groups)}
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cols_order = {col_id: i for i, col_id in enumerate(self.column_ids)}
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self.column_ids.sort(
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key=lambda col_id: (
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groups_order.get(self.column_group.get(col_id), col_id),
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cols_order[col_id],
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)
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)
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def insert_group(self, group: str, after: str = None, before: str = None):
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"""Déclare un groupe de colonnes et le place avant ou après un autre groupe.
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Si pas d'autre groupe indiqué, le place après, à droite du dernier.
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Si le group existe déjà, ne fait rien (ne le déplace pas).
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"""
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if group in self.groups:
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return
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other = after or before
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if other is None:
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self.groups.append(group)
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else:
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if not other in self.groups:
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raise ValueError(f"invalid column group '{other}'")
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index = self.groups.index(other)
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if after:
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index += 1
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self.groups.insert(index, group)
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def set_groups(self, groups: list[str]):
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"""Define column groups and set order"""
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self.groups = groups
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def set_titles(self, titles: dict[str, str]):
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"""Set columns titles"""
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self.titles = titles
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def update_titles(self, titles: dict[str, str]):
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"""Set columns titles"""
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self.titles.update(titles)
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def add_title(
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self, col_id, title: str = None, classes: list[str] = None
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) -> tuple["Cell", "Cell"]:
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"""Record this title,
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and create cells for footer and header if they don't already exist.
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"""
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title = title or ""
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if col_id not in self.titles:
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self.titles[col_id] = title
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self.head_title_row.cells[col_id] = self.head_title_row.add_cell(
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col_id,
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None,
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title,
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classes=classes,
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group=self.column_group.get(col_id),
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)
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self.foot_title_row.cells[col_id] = self.foot_title_row.add_cell(
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col_id, None, title, classes=classes
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)
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return self.head_title_row.cells.get(col_id), self.foot_title_row.cells[col_id]
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def excel(self, wb: Workbook = None):
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"""Simple Excel representation of the table."""
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self._prepare()
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if wb is None:
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sheet = sco_excel.ScoExcelSheet(sheet_name=self.xls_sheet_name, wb=wb)
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else:
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sheet = wb.create_sheet(sheet_name=self.xls_sheet_name)
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sheet.rows += self.xls_before_table
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style_bold = sco_excel.excel_make_style(bold=True)
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style_base = self.xls_style_base or sco_excel.excel_make_style()
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for row in self.head:
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sheet.append_row(row.to_excel(sheet, style=style_bold))
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for row in self.rows:
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sheet.append_row(row.to_excel(sheet, style=style_base))
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for row in self.foot:
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sheet.append_row(row.to_excel(sheet, style=style_base))
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if self.caption:
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sheet.append_blank_row() # empty line
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sheet.append_single_cell_row(self.caption, style_base)
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if self.origin:
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sheet.append_blank_row() # empty line
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sheet.append_single_cell_row(self.origin, style_base)
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# Largeurs des colonnes
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for col_id, width in self.xls_columns_width.items():
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try:
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idx = self.column_ids.index(col_id)
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col = get_column_letter(idx + 1)
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sheet.set_column_dimension_width(col, width)
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except ValueError:
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pass
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if wb is None:
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return sheet.generate()
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class Row(Element):
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"""A row."""
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def __init__(
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self,
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table: Table,
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row_id=None,
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category=None,
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cell_elt: str = None,
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classes: list[str] = None,
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attrs: dict[str, str] = None,
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data: dict = None,
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):
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super().__init__("tr", classes=classes, attrs=attrs, data=data)
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self.category = category
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self.cells = {}
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self.cell_elt = cell_elt
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self.classes: list[str] = classes or []
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"classes sur le <tr>"
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self.id = row_id
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self.table = table
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def add_cell(
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self,
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col_id: str,
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title: str,
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content: str,
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group: str = None,
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attrs: list[str] = None,
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classes: list[str] = None,
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data: dict[str, str] = None,
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elt: str = None,
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raw_content=None,
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target_attrs: dict = None,
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target: str = None,
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column_classes: set[str] = None,
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) -> "Cell":
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"""Create cell and add it to the row.
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group: groupe de colonnes
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classes is a list of css class names
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"""
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if (classes is None) or (group not in classes):
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# ajoute le nom de groupe aux classes
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classes = [group or ""] + (classes or [])
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else:
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classes = classes.copy()
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if group:
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self.table.column_classes[col_id].add(group)
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if column_classes:
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self.table.column_classes[col_id].update(column_classes)
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cell = Cell(
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content,
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classes,
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elt=elt or self.cell_elt,
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attrs=attrs,
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data=data,
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raw_content=raw_content,
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target=target,
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target_attrs=target_attrs,
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)
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return self.add_cell_instance(col_id, cell, column_group=group, title=title)
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def add_cell_instance(
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self, col_id: str, cell: "Cell", column_group: str = None, title: str = None
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) -> "Cell":
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"""Add a cell to the row.
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Si title est None, il doit avoir été ajouté avec table.add_title().
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"""
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cell.data["group"] = column_group or ""
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self.cells[col_id] = cell
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if col_id not in self.table.column_ids:
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self.table.column_ids.append(col_id)
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self.table.insert_group(column_group)
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if column_group is not None:
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self.table.column_group[col_id] = column_group
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if title is not None:
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self.table.add_title(col_id, title, classes=cell.classes)
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return cell
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def html(self, extra_classes: list[str] = None) -> str:
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"""html for row, with cells"""
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if (self.id is not None) and self.id == getattr(self.table, "selected_row_id"):
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self.classes.append("row_selected")
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return super().html(extra_classes=extra_classes)
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def html_content(self) -> str:
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"Le contenu du row en html."
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return "".join(
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[
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self.cells.get(col_id, self.table.empty_cell).html(
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extra_classes=self.table.column_classes.get(col_id)
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)
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for col_id in self.table.column_ids
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]
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)
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def to_dict(self) -> dict:
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"""row as a dict, with only cell contents"""
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return {
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col_id: self.cells.get(col_id, self.table.empty_cell).raw_content
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for col_id in self.table.column_ids
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}
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def to_excel(self, sheet, style=None) -> list:
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"build excel row for given sheet"
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return sheet.make_row(self.to_dict().values(), style=style)
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class BottomRow(Row):
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"""Une ligne spéciale pour le pied de table
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avec un titre à gauche
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(répété sur les colonnes indiquées par left_title_col_ids),
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et automatiquement ajouté au footer.
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"""
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def __init__(
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self, *args, left_title_col_ids: list[str] = None, left_title=None, **kwargs
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):
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super().__init__(*args, **kwargs)
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self.left_title_col_ids = left_title_col_ids
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if left_title is not None:
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self.set_left_title(left_title)
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self.table.add_foot_row(self)
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def set_left_title(self, title: str = ""):
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"Fill left title cells"
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for col_id in self.left_title_col_ids:
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self.add_cell(col_id, None, title)
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class Cell(Element):
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"""Une cellule de table"""
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def __init__(
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self,
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content,
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classes: list[str] = None,
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elt="td",
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attrs: dict[str, str] = None,
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data: dict = None,
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raw_content=None,
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target: str = None,
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target_attrs: dict = None,
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):
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"""if specified, raw_content will be used for raw exports like xlsx"""
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super().__init__(
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elt if elt is not None else "td", content, classes, attrs, data
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)
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if self.elt == "th":
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self.attrs["scope"] = "row"
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self.data = data.copy() if data else {}
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self.raw_content = raw_content or content
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self.target = target
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self.target_attrs = target_attrs or {}
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@classmethod
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def empty(cls):
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"create a new empty cell"
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return cls("")
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def __str__(self):
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return str(self.content)
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def html_content(self) -> str:
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"content of the table cell, as html"
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# entoure le contenu par un lien ?
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if (self.target is not None) or self.target_attrs:
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href = f'href="{self.target}"' if self.target else ""
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target_attrs_str = " ".join(
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[f'{k}="{v}"' for (k, v) in self.target_attrs.items()]
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)
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return f"<a {href} {target_attrs_str}>{super().html_content()}</a>"
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return super().html_content()
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class RowGroupsHeader(Row):
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"""Header line at the top of the table
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with a multicolumn th cell per group
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"""
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def html_content(self):
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"""Le contenu est généré intégralement ici: un th par groupe contigu
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Note: les colonnes doivent avoir déjà été triées par table.sort_columns()
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"""
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column_ids = self.table.column_ids
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nb_cols = len(self.table.column_ids)
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elements = []
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idx = 0
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while idx < nb_cols:
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group_title = self.table.group_titles.get(
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self.table.column_group.get(column_ids[idx])
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)
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colspan = 1
|
|
idx += 1
|
|
# on groupe tant que les TITRES des groupes sont identiques
|
|
while idx < nb_cols and group_title == self.table.group_titles.get(
|
|
self.table.column_group.get(column_ids[idx])
|
|
):
|
|
idx += 1
|
|
colspan += 1
|
|
elements.append(f"""<th colspan="{colspan}">{group_title or ""}</th>""")
|
|
|
|
return "\n".join(elements) if len(elements) > 1 else ""
|