class_docstr: The main dialog window.
code: def __init__(self, entries):
      super().__init__()
  
      self.entries = entries
      self.current_entry = -1
      self.current_thumbnail = -1
  
      event_filter = EventFilter(self)
      self.installEventFilter(event_filter)
  
      # The list of files on the left-hand side.
      self.filelist = QtWidgets.QListWidget()
      self.filelist.setMinimumWidth(400)
      for entry in entries:
          self.filelist.addItem(entry.display)
      self.filelist.currentRowChanged.connect(self.set_entry)
  
      thumbnails_box = QtWidgets.QWidget()
      thumbnails_layout = QtWidgets.QVBoxLayout()
      self.thumbnails = []
      for i, name in enumerate(("test", "expected", "diff")):
          thumbnail = Thumbnail(self, i, name)
          thumbnails_layout.addWidget(thumbnail)
          self.thumbnails.append(thumbnail)
      thumbnails_box.setLayout(thumbnails_layout)
  
      images_layout = QtWidgets.QVBoxLayout()
      images_box = QtWidgets.QWidget()
      self.image_display = QtWidgets.QLabel()
      self.image_display.setAlignment(
          QtCore.Qt.AlignmentFlag.AlignHCenter
          | QtCore.Qt.AlignmentFlag.AlignVCenter
      )
      self.image_display.setMinimumSize(800, 600)
      images_layout.addWidget(self.image_display, 6)
      images_box.setLayout(images_layout)
  
      buttons_box = QtWidgets.QWidget()
      buttons_layout = QtWidgets.QHBoxLayout()
      accept_button = QtWidgets.QPushButton("Accept (A)")
      accept_button.clicked.connect(self.accept_test)
      buttons_layout.addWidget(accept_button)
      reject_button = QtWidgets.QPushButton("Reject (R)")
      reject_button.clicked.connect(self.reject_test)
      buttons_layout.addWidget(reject_button)
      buttons_box.setLayout(buttons_layout)
      images_layout.addWidget(buttons_box)
  
      main_layout = QtWidgets.QHBoxLayout()
      main_layout.addWidget(self.filelist, 1)
      main_layout.addWidget(thumbnails_box, 1)
      main_layout.addWidget(images_box, 3)
  
      self.setLayout(main_layout)
  
      self.setWindowTitle("matplotlib test triager")
  
      self.set_entry(0)
  
imports: import os
  from pathlib import Path
  import shutil
  import sys
  from matplotlib.backends.qt_compat import QtCore, QtGui, QtWidgets
  from matplotlib.backends.qt_compat import _exec
label_desc: Use image node_id 1 to create a new Dialog object from inherited base classes: QtWidgets with example: obj = Dialog(entries)