First working release.

Other files (not .docx) support is not guaranteed

gui/modules/initialize/handlers.py

@@ -0,0 +1,50 @@
+from gui.gui import Ui_MainWindow
+from modules.document.document_file import ExtractedDocument
+from modules.document.document_properties import DocumentProps
+from gui.modules.document_loader import to_gui, from_gui
+from PySide6 import QtWidgets
+from gui.modules.gui_helpers import other_options
+from PySide6.QtWidgets import QFileDialog
+from modules.time_tools import time_diff
+
+
+def remobjects(ui: Ui_MainWindow):
+    for obj in ui.remove_objects:
+        try:
+            obj.remove()
+        except Exception as e:
+            assert e
+
+
+def register_handlers(ui: Ui_MainWindow, MainWindow: QtWidgets.QMainWindow):
+    ui.path_to_original_box.textChanged.connect(
+        lambda: to_gui.fill_gui(ui, DocumentProps(ExtractedDocument(ui.path_to_original_box.text())))
+    )
+    MainWindow.closeEvent = lambda _: (remobjects(ui))
+    ui.expand_other_options_button.clicked.connect(
+        lambda: other_options.on_other_clicked(ui)
+    )
+    ui.creator_box.textEdited.connect(
+        lambda: ui.last_modified_by_box.setText(ui.creator_box.text())
+    )
+    ui.save_button.clicked.connect(
+        lambda: from_gui.write_document(ui, ui.document)
+    )
+    ui.open_document_button.clicked.connect(
+        lambda: ui.path_to_original_box.setText(
+            QFileDialog.getOpenFileName(None, caption='Choose file to edit')[0]
+        )
+    )
+
+    ui.dateandtime_created_box.dateTimeChanged.connect(
+        lambda: ui.custom_edit_time_box.setValue(time_diff.compute_time_diff(
+            ui.dateandtime_created_box.date().toPython(), ui.dateandtime_created_box.time().toPython(),
+            ui.dateandtime_edited_box.date().toPython(), ui.dateandtime_edited_box.time().toPython()
+        ))
+    )
+    ui.dateandtime_edited_box.dateTimeChanged.connect(
+        lambda: ui.custom_edit_time_box.setValue(time_diff.compute_time_diff(
+            ui.dateandtime_created_box.date().toPython(), ui.dateandtime_created_box.time().toPython(),
+            ui.dateandtime_edited_box.date().toPython(), ui.dateandtime_edited_box.time().toPython()
+        ))
+    )