2025-12-05 13:07:37 +01:00
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import os
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from qgis.PyQt.QtWidgets import (
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QWidget, QVBoxLayout, QLabel, QMessageBox, QPushButton,
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QFileDialog, QToolButton, QSizePolicy
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)
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from qgis.PyQt.QtCore import Qt
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from qgis.gui import QgsFileWidget, QgsMapLayerComboBox
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from qgis.core import QgsProject, QgsMapLayerProxyModel
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2025-11-17 10:06:00 +01:00
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class TabA(QWidget):
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2025-12-05 13:07:37 +01:00
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tab_title = "Daten"
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2025-11-17 11:29:40 +01:00
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2025-11-17 10:06:00 +01:00
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def __init__(self, parent=None):
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super().__init__(parent)
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2025-12-05 13:07:37 +01:00
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# Variablen initialisieren
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self.verfahrens_db = None
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self.lokale_linkliste = None
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# ---------------------------------------------------------
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# Hauptlayout
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# ---------------------------------------------------------
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main_layout = QVBoxLayout()
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main_layout.setSpacing(4)
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main_layout.setContentsMargins(4, 4, 4, 4)
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# ---------------------------------------------------------
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# COLLAPSIBLE GRUPPE: Verfahrens-Datenbank
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# ---------------------------------------------------------
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self.group_button = QToolButton()
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self.group_button.setText("Verfahrens-Datenbank")
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self.group_button.setCheckable(True)
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self.group_button.setChecked(True)
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self.group_button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
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self.group_button.setArrowType(Qt.DownArrow)
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self.group_button.setStyleSheet("font-weight: bold;")
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self.group_button.toggled.connect(self.toggle_group)
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main_layout.addWidget(self.group_button, 0)
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# Inhalt der Gruppe
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self.group_content = QWidget()
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self.group_content.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Maximum)
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group_layout = QVBoxLayout()
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group_layout.setSpacing(2)
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group_layout.setContentsMargins(10, 4, 4, 4)
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# Hinweis
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hinweis1 = QLabel("bestehende Datei auswählen")
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group_layout.addWidget(hinweis1)
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# Datei-Auswahl
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self.file_widget = QgsFileWidget()
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self.file_widget.setStorageMode(QgsFileWidget.GetFile)
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self.file_widget.setFilter("Geopackage (*.gpkg)")
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self.file_widget.fileChanged.connect(self.on_file_changed)
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group_layout.addWidget(self.file_widget)
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# Hinweis "-oder-"
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hinweis2 = QLabel("-oder-")
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group_layout.addWidget(hinweis2)
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# Button: Neue Datei
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self.btn_new = QPushButton("Neue Verfahrens-DB anlegen")
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self.btn_new.clicked.connect(self.create_new_gpkg)
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group_layout.addWidget(self.btn_new)
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self.group_content.setLayout(group_layout)
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main_layout.addWidget(self.group_content, 0)
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# ---------------------------------------------------------
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# COLLAPSIBLE Optional-Bereich
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# ---------------------------------------------------------
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self.optional_button = QToolButton()
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self.optional_button.setText("Optional: Lokale Linkliste")
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self.optional_button.setCheckable(True)
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self.optional_button.setChecked(False)
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self.optional_button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
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self.optional_button.setArrowType(Qt.RightArrow)
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self.optional_button.setStyleSheet("font-weight: bold; margin-top: 6px;")
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self.optional_button.toggled.connect(self.toggle_optional)
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main_layout.addWidget(self.optional_button, 0)
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# Inhalt optional
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self.optional_content = QWidget()
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self.optional_content.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Maximum)
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optional_layout = QVBoxLayout()
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optional_layout.setSpacing(2)
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optional_layout.setContentsMargins(10, 4, 4, 20)
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# Hinweistext
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optional_hint = QLabel("(frei lassen für globale Linkliste)")
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optional_layout.addWidget(optional_hint)
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# Datei-Auswahl für Linkliste
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self.linkliste_widget = QgsFileWidget()
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self.linkliste_widget.setStorageMode(QgsFileWidget.GetFile)
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self.linkliste_widget.setFilter("Geopackage (*.gpkg)")
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self.linkliste_widget.fileChanged.connect(self.on_linkliste_changed)
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optional_layout.addWidget(self.linkliste_widget)
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main_layout.addWidget(self.optional_content, 0)
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# ---------------------------------------------------------
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# Layer-Auswahlfeld
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# ---------------------------------------------------------
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layer_label = QLabel("Verfahrensgebiet-Layer auswählen")
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layer_label.setStyleSheet("font-weight: bold; margin-top: 6px;")
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main_layout.addWidget(layer_label)
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self.layer_combo = QgsMapLayerComboBox()
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self.layer_combo.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Maximum)
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# ✅ QGIS 3.22–3.46 kompatibel
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self.layer_combo.setFilters(QgsMapLayerProxyModel.VectorLayer)
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# Layerwechsel speichern
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self.layer_combo.layerChanged.connect(self.on_layer_changed)
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main_layout.addWidget(self.layer_combo)
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self.optional_content.setLayout(optional_layout)
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self.optional_content.setVisible(False)
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# Spacer
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main_layout.addStretch(1)
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self.setLayout(main_layout)
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# ✅ gespeicherte Werte wiederherstellen (jetzt existieren die Widgets!)
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self.restore_saved_values()
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# ✅ Layer-Vorauswahl durchführen
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self.preselect_verfahrensgebiet_layer()
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# ---------------------------------------------------------
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# Collapsible Gruppe ein-/ausblenden
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# ---------------------------------------------------------
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def toggle_group(self, checked):
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self.group_button.setArrowType(Qt.DownArrow if checked else Qt.RightArrow)
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self.group_content.setVisible(checked)
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def toggle_optional(self, checked):
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self.optional_button.setArrowType(Qt.DownArrow if checked else Qt.RightArrow)
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self.optional_content.setVisible(checked)
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# ---------------------------------------------------------
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# Datei-Auswahl: Verfahrens-DB
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# ---------------------------------------------------------
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def on_file_changed(self, path: str):
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if not path:
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self.verfahrens_db = None
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# ✅ Projektvariable löschen
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vars = QgsProject.instance().customVariables()
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if "sn_verfahrens_db" in vars:
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del vars["sn_verfahrens_db"]
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QgsProject.instance().setCustomVariables(vars)
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self.update_group_button_color()
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return
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if not path.lower().endswith(".gpkg"):
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path += ".gpkg"
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self.file_widget.setFilePath(path)
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if os.path.exists(path):
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self.verfahrens_db = path
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else:
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self.verfahrens_db = None
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QMessageBox.warning(self, "Datei nicht gefunden", f"Die Datei existiert nicht:\n{path}")
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self.file_widget.setFilePath("")
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# ✅ speichern
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vars = QgsProject.instance().customVariables()
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vars["sn_verfahrens_db"] = self.verfahrens_db
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QgsProject.instance().setCustomVariables(vars)
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self.update_group_button_color()
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# ---------------------------------------------------------
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# Datei-Auswahl: Lokale Linkliste
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# ---------------------------------------------------------
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def on_linkliste_changed(self, path: str):
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if not path:
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self.lokale_linkliste = None
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vars = QgsProject.instance().customVariables()
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if "sn_linkliste" in vars:
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del vars["sn_linkliste"]
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QgsProject.instance().setCustomVariables(vars)
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return
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if not path.lower().endswith(".gpkg"):
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path += ".gpkg"
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self.linkliste_widget.setFilePath(path)
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if os.path.exists(path):
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self.lokale_linkliste = path
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else:
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self.lokale_linkliste = None
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QMessageBox.warning(self, "Datei nicht gefunden", f"Die Datei existiert nicht:\n{path}")
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self.linkliste_widget.setFilePath("")
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# ✅ speichern
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vars = QgsProject.instance().customVariables()
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vars["sn_linkliste"] = self.lokale_linkliste
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QgsProject.instance().setCustomVariables(vars)
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# ---------------------------------------------------------
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# Layer-Auswahl speichern
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# ---------------------------------------------------------
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def on_layer_changed(self, layer):
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if layer:
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vars = QgsProject.instance().customVariables()
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vars["sn_verfahrensgebiet_layer"] = layer.id()
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QgsProject.instance().setCustomVariables(vars)
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# ---------------------------------------------------------
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# Button-Farbe aktualisieren
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# ---------------------------------------------------------
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def update_group_button_color(self):
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if self.verfahrens_db:
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self.group_button.setStyleSheet("font-weight: bold; background-color: #c4f7c4;")
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else:
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self.group_button.setStyleSheet("font-weight: bold;")
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# ---------------------------------------------------------
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# Vorauswahl des Layers "Verfahrensgebiet"
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# ---------------------------------------------------------
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def preselect_verfahrensgebiet_layer(self):
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project = QgsProject.instance()
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# ✅ zuerst gespeicherten Layer wiederherstellen
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saved_layer_id = project.customVariables().get("sn_verfahrensgebiet_layer", None)
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if saved_layer_id:
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layer = project.mapLayer(saved_layer_id)
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if layer:
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self.layer_combo.setLayer(layer)
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return
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# ✅ sonst nach Namen suchen
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for layer in project.mapLayers().values():
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if "verfahrensgebiet" in layer.name().lower():
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self.layer_combo.setLayer(layer)
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return
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# ✅ Fallback: erster Layer
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if self.layer_combo.count() > 0:
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self.layer_combo.setCurrentIndex(0)
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# ---------------------------------------------------------
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# Werte wiederherstellen
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# ---------------------------------------------------------
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def restore_saved_values(self):
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project = QgsProject.instance()
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vars = project.customVariables()
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# ✅ Verfahrens-DB
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saved_db = vars.get("sn_verfahrens_db", None)
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if saved_db and os.path.exists(saved_db):
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self.verfahrens_db = saved_db
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self.file_widget.setFilePath(saved_db)
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self.update_group_button_color()
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# ✅ Linkliste
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saved_link = vars.get("sn_linkliste", None)
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if saved_link and os.path.exists(saved_link):
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self.lokale_linkliste = saved_link
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self.linkliste_widget.setFilePath(saved_link)
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def create_new_gpkg(self):
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"""Öffnet einen Save-Dialog und legt eine neue GPKG-Datei an."""
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file_path, _ = QFileDialog.getSaveFileName(
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self,
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"Neue Verfahrens-Datenbank anlegen",
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|
"",
|
|
|
|
|
|
"Geopackage (*.gpkg);;Alle Dateien (*)"
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
if not file_path:
|
|
|
|
|
|
return # Abbruch
|
|
|
|
|
|
|
|
|
|
|
|
# Automatisch .gpkg anhängen
|
|
|
|
|
|
if not file_path.lower().endswith(".gpkg"):
|
|
|
|
|
|
file_path += ".gpkg"
|
|
|
|
|
|
|
|
|
|
|
|
# Existiert Datei bereits?
|
|
|
|
|
|
if os.path.exists(file_path):
|
|
|
|
|
|
overwrite = QMessageBox.question(
|
|
|
|
|
|
self,
|
|
|
|
|
|
"Datei existiert bereits",
|
|
|
|
|
|
f"Die Datei existiert bereits:\n\n{file_path}\n\nSoll sie überschrieben werden?",
|
|
|
|
|
|
QMessageBox.Yes | QMessageBox.No,
|
|
|
|
|
|
QMessageBox.No
|
|
|
|
|
|
)
|
|
|
|
|
|
if overwrite != QMessageBox.Yes:
|
|
|
|
|
|
return
|
|
|
|
|
|
|
|
|
|
|
|
# Datei anlegen
|
|
|
|
|
|
try:
|
|
|
|
|
|
open(file_path, "w").close()
|
|
|
|
|
|
except Exception as e:
|
|
|
|
|
|
QMessageBox.critical(self, "Fehler", f"Die Datei konnte nicht angelegt werden:\n{e}")
|
|
|
|
|
|
return
|
|
|
|
|
|
|
|
|
|
|
|
# Datei übernehmen
|
|
|
|
|
|
self.verfahrens_db = file_path
|
|
|
|
|
|
self.file_widget.setFilePath(file_path)
|
|
|
|
|
|
self.update_group_button_color()
|
|
|
|
|
|
|
|
|
|
|
|
QMessageBox.information(self, "Projekt-DB angelegt", f"Neue Projekt-Datenbank wurde angelegt:\n{file_path}")
|
