125 lines
4.8 KiB
Python
125 lines
4.8 KiB
Python
|
"""Custom element classes related to document comments."""
|
||
|
|
|
||
|
|
from __future__ import annotations
|
||
|
|
|
||
|
|
import datetime as dt
|
||
|
|
from typing import TYPE_CHECKING, Callable, cast
|
||
|
|
|
||
|
|
from docx.oxml.ns import nsdecls
|
||
|
|
from docx.oxml.parser import parse_xml
|
||
|
|
from docx.oxml.simpletypes import ST_DateTime, ST_DecimalNumber, ST_String
|
||
|
|
from docx.oxml.xmlchemy import BaseOxmlElement, OptionalAttribute, RequiredAttribute, ZeroOrMore
|
||
|
|
|
||
|
|
if TYPE_CHECKING:
|
||
|
|
from docx.oxml.table import CT_Tbl
|
||
|
|
from docx.oxml.text.paragraph import CT_P
|
||
|
|
|
||
|
|
|
||
|
|
class CT_Comments(BaseOxmlElement):
|
||
|
|
"""`w:comments` element, the root element for the comments part.
|
||
|
|
|
||
|
|
Simply contains a collection of `w:comment` elements, each representing a single comment. Each
|
||
|
|
contained comment is identified by a unique `w:id` attribute, used to reference the comment
|
||
|
|
from the document text. The offset of the comment in this collection is arbitrary; it is
|
||
|
|
essentially a _set_ implemented as a list.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# -- type-declarations to fill in the gaps for metaclass-added methods --
|
||
|
|
comment_lst: list[CT_Comment]
|
||
|
|
|
||
|
|
comment = ZeroOrMore("w:comment")
|
||
|
|
|
||
|
|
def add_comment(self) -> CT_Comment:
|
||
|
|
"""Return newly added `w:comment` child of this `w:comments`.
|
||
|
|
|
||
|
|
The returned `w:comment` element is the minimum valid value, having a `w:id` value unique
|
||
|
|
within the existing comments and the required `w:author` attribute present but set to the
|
||
|
|
empty string. It's content is limited to a single run containing the necessary annotation
|
||
|
|
reference but no text. Content is added by adding runs to this first paragraph and by
|
||
|
|
adding additional paragraphs as needed.
|
||
|
|
"""
|
||
|
|
next_id = self._next_available_comment_id()
|
||
|
|
comment = cast(
|
||
|
|
CT_Comment,
|
||
|
|
parse_xml(
|
||
|
|
f'<w:comment {nsdecls("w")} w:id="{next_id}" w:author="">'
|
||
|
|
f" <w:p>"
|
||
|
|
f" <w:pPr>"
|
||
|
|
f' <w:pStyle w:val="CommentText"/>'
|
||
|
|
f" </w:pPr>"
|
||
|
|
f" <w:r>"
|
||
|
|
f" <w:rPr>"
|
||
|
|
f' <w:rStyle w:val="CommentReference"/>'
|
||
|
|
f" </w:rPr>"
|
||
|
|
f" <w:annotationRef/>"
|
||
|
|
f" </w:r>"
|
||
|
|
f" </w:p>"
|
||
|
|
f"</w:comment>"
|
||
|
|
),
|
||
|
|
)
|
||
|
|
self.append(comment)
|
||
|
|
return comment
|
||
|
|
|
||
|
|
def get_comment_by_id(self, comment_id: int) -> CT_Comment | None:
|
||
|
|
"""Return the `w:comment` element identified by `comment_id`, or |None| if not found."""
|
||
|
|
comment_elms = self.xpath(f"(./w:comment[@w:id='{comment_id}'])[1]")
|
||
|
|
return comment_elms[0] if comment_elms else None
|
||
|
|
|
||
|
|
def _next_available_comment_id(self) -> int:
|
||
|
|
"""The next available comment id.
|
||
|
|
|
||
|
|
According to the schema, this can be any positive integer, as big as you like, and the
|
||
|
|
default mechanism is to use `max() + 1`. However, if that yields a value larger than will
|
||
|
|
fit in a 32-bit signed integer, we take a more deliberate approach to use the first
|
||
|
|
ununsed integer starting from 0.
|
||
|
|
"""
|
||
|
|
used_ids = [int(x) for x in self.xpath("./w:comment/@w:id")]
|
||
|
|
|
||
|
|
next_id = max(used_ids, default=-1) + 1
|
||
|
|
|
||
|
|
if next_id <= 2**31 - 1:
|
||
|
|
return next_id
|
||
|
|
|
||
|
|
# -- fall-back to enumerating all used ids to find the first unused one --
|
||
|
|
for expected, actual in enumerate(sorted(used_ids)):
|
||
|
|
if expected != actual:
|
||
|
|
return expected
|
||
|
|
|
||
|
|
return len(used_ids)
|
||
|
|
|
||
|
|
|
||
|
|
class CT_Comment(BaseOxmlElement):
|
||
|
|
"""`w:comment` element, representing a single comment.
|
||
|
|
|
||
|
|
A comment is a so-called "story" and can contain paragraphs and tables much like a table-cell.
|
||
|
|
While probably most often used for a single sentence or phrase, a comment can contain rich
|
||
|
|
content, including multiple rich-text paragraphs, hyperlinks, images, and tables.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# -- attributes on `w:comment` --
|
||
|
|
id: int = RequiredAttribute("w:id", ST_DecimalNumber) # pyright: ignore[reportAssignmentType]
|
||
|
|
author: str = RequiredAttribute("w:author", ST_String) # pyright: ignore[reportAssignmentType]
|
||
|
|
initials: str | None = OptionalAttribute( # pyright: ignore[reportAssignmentType]
|
||
|
|
"w:initials", ST_String
|
||
|
|
)
|
||
|
|
date: dt.datetime | None = OptionalAttribute( # pyright: ignore[reportAssignmentType]
|
||
|
|
"w:date", ST_DateTime
|
||
|
|
)
|
||
|
|
|
||
|
|
# -- children --
|
||
|
|
|
||
|
|
p = ZeroOrMore("w:p", successors=())
|
||
|
|
tbl = ZeroOrMore("w:tbl", successors=())
|
||
|
|
|
||
|
|
# -- type-declarations for methods added by metaclass --
|
||
|
|
|
||
|
|
add_p: Callable[[], CT_P]
|
||
|
|
p_lst: list[CT_P]
|
||
|
|
tbl_lst: list[CT_Tbl]
|
||
|
|
_insert_tbl: Callable[[CT_Tbl], CT_Tbl]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def inner_content_elements(self) -> list[CT_P | CT_Tbl]:
|
||
|
|
"""Generate all `w:p` and `w:tbl` elements in this comment."""
|
||
|
|
return self.xpath("./w:p | ./w:tbl")
|