Source code for tuiview.vectoropendialog

"""
Module that contains the VectorOpenDialog class
"""
# This file is part of 'TuiView' - a simple Raster viewer
# Copyright (C) 2012  Sam Gillingham
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
from PyQt5.QtWidgets import QDialog, QVBoxLayout, QHBoxLayout, QRadioButton
from PyQt5.QtWidgets import QButtonGroup, QComboBox, QTextEdit, QPushButton
from PyQt5.QtGui import QFontMetrics
from PyQt5.QtCore import pyqtSignal

NUM_SQL_ROWS = 4

[docs]class VectorOpenDialog(QDialog): def __init__(self, parent, layerList): QDialog.__init__(self, parent) self.setWindowTitle('Open Vector Layer') self.layerList = layerList self.layerTypeButtonGroup = QButtonGroup() # enforces exclusivity self.layerNameRadio = QRadioButton("Layer Name") self.layerSQLRadio = QRadioButton("SQL") self.layerTypeButtonGroup.addButton(self.layerNameRadio) self.layerTypeButtonGroup.addButton(self.layerSQLRadio) self.layerNameRadio.setChecked(True) # the default self.mainLayout = QVBoxLayout() self.nameLayout = QHBoxLayout() self.nameLayout.addWidget(self.layerNameRadio) self.nameCombo = QComboBox() for layerName in layerList: self.nameCombo.addItem(layerName) self.nameLayout.addWidget(self.nameCombo) self.mainLayout.addLayout(self.nameLayout) self.sqlLayout = QHBoxLayout() self.sqlLayout.addWidget(self.layerSQLRadio) self.sqlText = QTextEdit() self.sqlText.setReadOnly(True) fm = QFontMetrics(self.sqlText.font()) self.sqlText.setFixedHeight(NUM_SQL_ROWS * fm.lineSpacing()) self.layerNameRadio.toggled.connect(self.typeToggled) self.sqlLayout.addWidget(self.sqlText) self.mainLayout.addLayout(self.sqlLayout) # ok and cancel buttons self.okButton = QPushButton(self) self.okButton.setText("OK") self.okButton.setDefault(True) self.okButton.clicked.connect(self.accept) self.cancelButton = QPushButton(self) self.cancelButton.setText("Cancel") self.cancelButton.clicked.connect(self.reject) self.buttonLayout = QHBoxLayout() self.buttonLayout.addWidget(self.okButton) self.buttonLayout.addWidget(self.cancelButton) self.mainLayout.addLayout(self.buttonLayout) self.setLayout(self.mainLayout)
[docs] def typeToggled(self, checked): "signal handler for change of state" self.sqlText.setReadOnly(checked)
[docs] def isNamedLayer(self): "Return if the user has selected a named layer rather than SQL" return self.layerNameRadio.isChecked()
[docs] def getSelectedLayer(self): "Get the name of the selected layer" return self.nameCombo.currentText()
[docs] def getSQL(self): "return the SQL text entered" return self.sqlText.toPlainText()