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dupeguru/qt/exclude_list_dialog.py
2021-01-29 18:56:29 +01:00

166 lines
7.0 KiB
Python

# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
# which should be included with this package. The terms are also available at
# http://www.gnu.org/licenses/gpl-3.0.html
import re
from PyQt5.QtCore import Qt, pyqtSlot
from PyQt5.QtWidgets import (
QPushButton, QLineEdit, QVBoxLayout, QGridLayout, QDialog,
QTableView, QAbstractItemView, QSpacerItem, QSizePolicy, QHeaderView
)
from .exclude_list_table import ExcludeListTable
from core.exclude import AlreadyThereException
from hscommon.trans import trget
tr = trget("ui")
class ExcludeListDialog(QDialog):
def __init__(self, app, parent, model, **kwargs):
flags = Qt.CustomizeWindowHint | Qt.WindowTitleHint | Qt.WindowSystemMenuHint
super().__init__(parent, flags, **kwargs)
self.app = app
self.specific_actions = frozenset()
self._setupUI()
self.model = model # ExcludeListDialogCore
self.model.view = self
self.table = ExcludeListTable(app, view=self.tableView) # Qt ExcludeListTable
self._row_matched = False # test if at least one row matched our test string
self._input_styled = False
self.buttonAdd.clicked.connect(self.addStringFromLineEdit)
self.buttonRemove.clicked.connect(self.removeSelected)
self.buttonRestore.clicked.connect(self.restoreDefaults)
self.buttonClose.clicked.connect(self.accept)
self.buttonHelp.clicked.connect(self.display_help_message)
self.buttonTestString.clicked.connect(self.onTestStringButtonClicked)
self.inputLine.textEdited.connect(self.reset_input_style)
self.testLine.textEdited.connect(self.reset_input_style)
self.testLine.textEdited.connect(self.reset_table_style)
def _setupUI(self):
layout = QVBoxLayout(self)
gridlayout = QGridLayout()
self.buttonAdd = QPushButton(tr("Add"))
self.buttonRemove = QPushButton(tr("Remove Selected"))
self.buttonRestore = QPushButton(tr("Restore defaults"))
self.buttonTestString = QPushButton(tr("Test string"))
self.buttonClose = QPushButton(tr("Close"))
self.buttonHelp = QPushButton(tr("Help"))
self.inputLine = QLineEdit()
self.testLine = QLineEdit()
self.tableView = QTableView()
triggers = (
QAbstractItemView.DoubleClicked
| QAbstractItemView.EditKeyPressed
| QAbstractItemView.SelectedClicked
)
self.tableView.setEditTriggers(triggers)
self.tableView.setSelectionMode(QTableView.ExtendedSelection)
self.tableView.setSelectionBehavior(QTableView.SelectRows)
self.tableView.setShowGrid(False)
vheader = self.tableView.verticalHeader()
vheader.setSectionsMovable(True)
vheader.setVisible(False)
hheader = self.tableView.horizontalHeader()
hheader.setSectionsMovable(False)
hheader.setSectionResizeMode(QHeaderView.Fixed)
hheader.setStretchLastSection(True)
hheader.setHighlightSections(False)
hheader.setVisible(True)
gridlayout.addWidget(self.inputLine, 0, 0)
gridlayout.addWidget(self.buttonAdd, 0, 1, Qt.AlignLeft)
gridlayout.addWidget(self.buttonRemove, 1, 1, Qt.AlignLeft)
gridlayout.addWidget(self.buttonRestore, 2, 1, Qt.AlignLeft)
gridlayout.addWidget(self.buttonHelp, 3, 1, Qt.AlignLeft)
gridlayout.addWidget(self.buttonClose, 4, 1)
gridlayout.addWidget(self.tableView, 1, 0, 6, 1)
gridlayout.addItem(QSpacerItem(0, 0, QSizePolicy.Minimum, QSizePolicy.Expanding), 4, 1)
gridlayout.addWidget(self.buttonTestString, 6, 1)
gridlayout.addWidget(self.testLine, 6, 0)
layout.addLayout(gridlayout)
self.inputLine.setPlaceholderText(tr("Type a python regular expression here..."))
self.inputLine.setFocus()
self.testLine.setPlaceholderText(tr("Type a file system path or filename here..."))
self.testLine.setClearButtonEnabled(True)
# --- model --> view
def show(self):
super().show()
self.inputLine.setFocus()
@pyqtSlot()
def addStringFromLineEdit(self):
text = self.inputLine.text()
if not text:
return
try:
self.model.add(text)
except AlreadyThereException:
self.app.show_message("Expression already in the list.")
return
except Exception as e:
self.app.show_message(f"Expression is invalid: {e}")
return
self.inputLine.clear()
def removeSelected(self):
self.model.remove_selected()
def restoreDefaults(self):
self.model.restore_defaults()
def onTestStringButtonClicked(self):
input_text = self.testLine.text()
if not input_text:
self.reset_input_style()
return
# if at least one row matched, we know whether table is highlighted or not
self._row_matched = self.model.test_string(input_text)
self.table.refresh()
input_regex = self.inputLine.text()
if not input_regex:
self.reset_input_style()
return
try:
compiled = re.compile(input_regex)
except re.error:
self.reset_input_style()
return
match = compiled.match(input_text)
if match:
self._input_styled = True
self.inputLine.setStyleSheet("background-color: rgb(10, 200, 10);")
else:
self.reset_input_style()
def reset_input_style(self):
"""Reset regex input line background"""
if self._input_styled:
self._input_styled = False
self.inputLine.setStyleSheet(self.styleSheet())
def reset_table_style(self):
if self._row_matched:
self._row_matched = False
self.model.reset_rows_highlight()
self.table.refresh()
def display_help_message(self):
self.app.show_message(tr("""\
These (case sensitive) python regular expressions will filter out files during scans.<br>\
Directores will also have their <strong>default state</strong> set to Excluded \
in the Directories tab if their name happens to match one of the selected regular expressions.<br>\
For each file collected, two tests are performed to determine whether or not to completely ignore it:<br>\
<li>1. Regular expressions with no path separator in them will be compared to the file name only.</li>
<li>2. Regular expressions with at least one path separator in them will be compared to the full path to the file.</li><br>
Example: if you want to filter out .PNG files from the "My Pictures" directory only:<br>\
<code>.*My\\sPictures\\\\.*\\.png</code><br><br>\
You can test the regular expression with the "test string" button after pasting a fake path in the test field:<br>\
<code>C:\\\\User\\My Pictures\\test.png</code><br><br>
Matching regular expressions will be highlighted.<br>\
If there is at least one highlight, the path or filename tested will be ignored during scans.<br><br>\
Directories and files starting with a period '.' are filtered out by default.<br><br>"""))