224 lines
7.6 KiB
Python
224 lines
7.6 KiB
Python
from __future__ import annotations
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import re
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from typing import Iterable, Tuple
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from PySide6.QtCore import Qt, Signal
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from PySide6.QtWidgets import (
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QFrame,
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QLabel,
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QLineEdit,
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QListWidget,
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QListWidgetItem,
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QSizePolicy,
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QHBoxLayout,
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QVBoxLayout,
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QWidget,
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)
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Row = Tuple[str, str]
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class Search(QWidget):
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"""Encapsulates the search UI + logic and emits a signal when a result is chosen."""
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openDateRequested = Signal(str)
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resultDatesChanged = Signal(list)
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def __init__(self, db, parent: QWidget | None = None):
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super().__init__(parent)
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self._db = db
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self.search = QLineEdit()
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self.search.setPlaceholderText("Search for notes here")
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self.search.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Fixed)
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self.search.textChanged.connect(self._search)
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self.results = QListWidget()
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self.results.setUniformItemSizes(False)
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self.results.setSelectionMode(self.results.SelectionMode.SingleSelection)
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self.results.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Expanding)
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self.results.itemClicked.connect(self._open_selected)
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self.results.hide()
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self.results.setMinimumHeight(250)
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lay = QVBoxLayout(self)
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lay.setContentsMargins(0, 0, 0, 0)
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lay.setSpacing(6)
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lay.setAlignment(Qt.AlignTop)
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lay.addWidget(self.search)
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lay.addWidget(self.results)
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def _open_selected(self, item: QListWidgetItem):
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date_str = item.data(Qt.ItemDataRole.UserRole)
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if date_str:
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self.openDateRequested.emit(date_str)
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def _search(self, text: str):
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"""
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Search for the supplied text in the database.
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For all rows found, populate the results widget with a clickable preview.
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"""
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q = text.strip()
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if not q:
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self.results.clear()
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self.results.hide()
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self.resultDatesChanged.emit([]) # clear highlights
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return
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try:
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rows: Iterable[Row] = self._db.search_entries(q)
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except Exception:
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rows = []
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self._populate_results(q, rows)
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def _populate_results(self, query: str, rows: Iterable[Row]):
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self.results.clear()
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rows = list(rows)
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if not rows:
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self.results.hide()
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self.resultDatesChanged.emit([]) # clear highlights
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return
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self.resultDatesChanged.emit(sorted({d for d, _ in rows}))
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self.results.show()
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for date_str, content in rows:
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# Build an HTML fragment around the match and whether to show ellipses
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frag_html, left_ell, right_ell = self._make_html_snippet(
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content, query, radius=30, maxlen=90
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)
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# ---- Per-item widget: date on top, preview row below (with ellipses) ----
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container = QWidget()
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outer = QVBoxLayout(container)
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outer.setContentsMargins(8, 6, 8, 6)
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outer.setSpacing(2)
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# Date label (plain text)
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date_lbl = QLabel()
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date_lbl.setTextFormat(Qt.TextFormat.RichText)
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date_lbl.setText(f"<h3><i>{date_str}</i></h3>")
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date_f = date_lbl.font()
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date_f.setPointSizeF(date_f.pointSizeF() + 1)
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date_lbl.setFont(date_f)
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outer.addWidget(date_lbl)
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# Preview row with optional ellipses
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row = QWidget()
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h = QHBoxLayout(row)
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h.setContentsMargins(0, 0, 0, 0)
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h.setSpacing(4)
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if left_ell:
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left = QLabel("…")
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left.setStyleSheet("color:#888;")
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h.addWidget(left, 0, Qt.AlignmentFlag.AlignTop)
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preview = QLabel()
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preview.setTextFormat(Qt.TextFormat.RichText)
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preview.setWordWrap(True)
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preview.setOpenExternalLinks(True)
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preview.setText(
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frag_html
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if frag_html
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else "<span style='color:#888'>(no preview)</span>"
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)
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h.addWidget(preview, 1)
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if right_ell:
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right = QLabel("…")
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right.setStyleSheet("color:#888;")
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h.addWidget(right, 0, Qt.AlignmentFlag.AlignBottom)
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outer.addWidget(row)
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line = QFrame()
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line.setFrameShape(QFrame.HLine)
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line.setFrameShadow(QFrame.Sunken)
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outer.addWidget(line)
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# ---- Add to list ----
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item = QListWidgetItem()
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item.setData(Qt.ItemDataRole.UserRole, date_str)
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item.setSizeHint(container.sizeHint())
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self.results.addItem(item)
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self.results.setItemWidget(item, container)
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# --- Snippet/highlight helpers -----------------------------------------
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def _make_html_snippet(
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self, markdown_src: str, query: str, *, radius=60, maxlen=180
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):
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# For markdown, we can work directly with the text
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# Strip markdown formatting for display
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plain = self._strip_markdown(markdown_src)
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if not plain:
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return "", False, False
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tokens = [t for t in re.split(r"\s+", query.strip()) if t]
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L = len(plain)
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# Find first occurrence (phrase first, then earliest token)
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idx, mlen = -1, 0
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if tokens:
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lower = plain.lower()
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phrase = " ".join(tokens).lower()
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j = lower.find(phrase)
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if j >= 0:
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idx, mlen = j, len(phrase)
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else:
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for t in tokens:
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tj = lower.find(t.lower())
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if tj >= 0 and (idx < 0 or tj < idx):
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idx, mlen = tj, len(t)
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# Compute window
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if idx < 0:
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start, end = 0, min(L, maxlen)
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else:
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start = max(0, min(idx - radius, max(0, L - maxlen)))
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end = min(L, max(idx + mlen + radius, start + maxlen))
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# Extract snippet and highlight matches
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snippet = plain[start:end]
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# Escape HTML and bold matches
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import html as _html
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snippet_html = _html.escape(snippet)
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if tokens:
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for t in tokens:
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# Case-insensitive replacement
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pattern = re.compile(re.escape(t), re.IGNORECASE)
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snippet_html = pattern.sub(
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lambda m: f"<b>{m.group(0)}</b>", snippet_html
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)
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return snippet_html, start > 0, end < L
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def _strip_markdown(self, markdown: str) -> str:
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"""Strip markdown formatting for plain text display."""
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# Remove images
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text = re.sub(r"!\[.*?\]\(.*?\)", "[Image]", markdown)
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# Remove links but keep text
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text = re.sub(r"\[([^\]]+)\]\([^\)]+\)", r"\1", text)
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# Remove inline code backticks
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text = re.sub(r"`([^`]+)`", r"\1", text)
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# Remove bold/italic markers
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text = re.sub(r"\*\*([^*]+)\*\*", r"\1", text)
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text = re.sub(r"__([^_]+)__", r"\1", text)
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text = re.sub(r"\*([^*]+)\*", r"\1", text)
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text = re.sub(r"_([^_]+)_", r"\1", text)
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# Remove strikethrough
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text = re.sub(r"~~([^~]+)~~", r"\1", text)
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# Remove heading markers
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text = re.sub(r"^#{1,6}\s+", "", text, flags=re.MULTILINE)
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# Remove list markers
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text = re.sub(r"^\s*[-*+]\s+", "", text, flags=re.MULTILINE)
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text = re.sub(r"^\s*\d+\.\s+", "", text, flags=re.MULTILINE)
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# Remove checkbox markers
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text = re.sub(r"^\s*-\s*\[[x ☐☑]\]\s+", "", text, flags=re.MULTILINE)
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# Remove code block fences
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text = re.sub(r"```[^\n]*\n", "", text)
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return text.strip()
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