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cogo_dialogs.py
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cogo_dialogs.py
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# -*- coding: utf8 -*-
"""
Author: Robert Moerman
Contact: robert@afrispatial.co.za
Company: AfriSpatial
This is a collection of custom QDialogs.
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
from __future__ import absolute_import
from builtins import range
from collections import OrderedDict
from PyQt5.QtCore import QSettings, QMetaObject, QStringListModel
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QCursor, QIcon
from PyQt5.QtWidgets import QDialog, QMessageBox, QGridLayout, QVBoxLayout, QLabel, QFormLayout, QComboBox, \
QHBoxLayout, QPushButton, QSpacerItem, QApplication, QDialogButtonBox, QLayout, QSplitter, QWidget, QLineEdit, \
QCheckBox, QRadioButton, QFrame, QCompleter, QSizePolicy, QListWidget, QToolBox
from qgis.core import QgsCredentials, QgsDataSourceUri, QgsFeatureRequest, QgsExpression
from qgis.gui import QgsAuthConfigSelect
from .cogo_widgets import XQPushButton, XQDialogButtonBox
from .database import *
from .qgisToolbox import FeatureSelector
from .utilities import images_path, get_ui_class, get_path, ExtendedComboBox
UI_CLASS = get_ui_class("ui_pgnewconnection.ui")
def _from_utf8(s):
return s
# All dialogs using selector tool have a captured function
# All dialogs have a get_return function
class NewDatabaseConnectionDialog(QDialog, UI_CLASS):
"""Dialog implementation class for new db connection."""
def __init__(self, parent):
"""Constructor"""
ssl_disable = {
'name': 'disable',
'value': 0
}
ssl_allow = {
'name': 'allow',
'value': 1
}
ssl_prefer = {
'name': 'prefer',
'value': 2
}
ssl_require = {
'name': 'require',
'value': 3
}
ssl_verify_ca = {
'name': 'verify_ca',
'value': 4
}
ssl_verify_full = {
'name': 'verify_full',
'value': 5
}
QDialog.__init__(self, None)
self.setupUi(self)
self.parent = parent
# add ssl mode option
self.cbxSSLmode.addItem(
ssl_disable['name'], ssl_disable['value'])
self.cbxSSLmode.addItem(
ssl_allow['name'], ssl_allow['value'])
self.cbxSSLmode.addItem(
ssl_prefer['name'], ssl_prefer['value'])
self.cbxSSLmode.addItem(
ssl_require['name'], ssl_require['value'])
self.cbxSSLmode.addItem(
ssl_verify_ca['name'], ssl_verify_ca['value'])
self.cbxSSLmode.addItem(
ssl_verify_full['name'], ssl_verify_full['value'])
self.auth_config = QgsAuthConfigSelect(self, "postgres")
self.tabAuthentication.insertTab(1, self.auth_config, "Configurations")
def accept(self):
settings = QSettings()
base_key = "/PostgreSQL/connections/"
settings.setValue(base_key + "selected", self.txtName.text())
auth_config = self.auth_config.configId()
if not auth_config and self.chkStorePassword.isChecked():
message = ("WARNING: You have opted to save your password. "
"It will be stored in unsecured plain text in your "
"project files and in your home directory "
"(Unix-like OS) or user profile (Windows). "
"If you want to avoid this, press Cancel and "
"either:\n\na) Don't save a password in the connection "
"settings — it will be requested interactively when "
"needed;\nb) Use the Configuration tab to add your "
"credentials in an HTTP Basic Authentication method "
"and store them in an encrypted database.")
answer = QMessageBox.question(self,
"Saving passwords",
message,
QMessageBox.Ok | QMessageBox.Cancel)
if answer == QMessageBox.Cancel:
return
if settings.contains(base_key + self.txtName.text() + "/service") or \
settings.contains(base_key + self.txtName.text() + "/host"):
message = "Should the existing connection %s be overwritten?"
answer = QMessageBox.question(self,
"Saving connection",
message % (self.txtName.text()),
QMessageBox.Ok | QMessageBox.Cancel)
if answer == QMessageBox.Cancel:
return
base_key += self.txtName.text()
settings.setValue(base_key + "/service", self.txtService.text())
settings.setValue(base_key + "/host", self.txtHost.text())
settings.setValue(base_key + "/port", self.txtPort.text())
settings.setValue(base_key + "/database", self.txtDatabase.text())
settings.setValue(base_key + "/authcfg", self.auth_config.configId())
settings.setValue(
base_key + "/publicOnly", self.cb_publicSchemaOnly.isChecked())
settings.setValue(
base_key + "/geometryColumnsOnly",
self.cb_geometryColumnsOnly.isChecked())
settings.setValue(
base_key + "/dontResolveType", self.cb_dontResolveType.isChecked())
settings.setValue(
base_key + "/allowGeometrylessTables",
self.cb_allowGeometrylessTables.isChecked())
settings.setValue(
base_key + "/sslmode",
self.cbxSSLmode.itemData(self.cbxSSLmode.currentIndex()))
settings.setValue(
base_key + "/estimatedMetadata",
self.cb_useEstimatedMetadata.isChecked())
if self.chkStoreUsername.isChecked():
settings.setValue(base_key + "/username", self.txtUsername.text())
settings.setValue(base_key + "/saveUsername", "true")
else:
settings.setValue(base_key + "/username", "")
settings.setValue(base_key + "/saveUsername", "false")
if self.chkStorePassword.isChecked():
settings.setValue(base_key + "/password", self.txtPassword.text())
settings.setValue(base_key + "/savePassword", "true")
else:
settings.setValue(base_key + "/password", "")
settings.setValue(base_key + "/savePassword", "false")
settings.remove(base_key + "/save")
self.parent.populate_database_choices()
new_index = self.parent.cmbbx_conn.findText(
self.txtName.text(), Qt.MatchExactly)
if new_index >= 0:
self.parent.cmbbx_conn.setCurrentIndex(new_index)
QDialog.accept(self)
class DatabaseConnectionDialog(QDialog):
""" This dialog enables the user to choose a database connection
defined through DB Manager
"""
def __init__(self):
# initialize QDialog class
super(
DatabaseConnectionDialog, self).__init__(
None, Qt.WindowStaysOnTopHint)
# initialize ui
self.connection = None
self.crs = None
self.setup_ui()
self.populate_database_choices()
def get_database_connection(self):
return self.connection
def get_crs(self):
return self.crs
def populate_database_choices(self):
""" Populate database connection choices
"""
self.cmbbx_conn.clear()
settings_postgres = QSettings()
settings_postgres.beginGroup('PostgreSQL/connections')
settings_plugin = QSettings()
settings_plugin.beginGroup('CoGo Plugin')
for index, database in enumerate(settings_postgres.childGroups()):
self.cmbbx_conn.addItem(database)
current_connection = settings_plugin.value("DatabaseConnection", None)
if current_connection:
for myCount in range(0, self.cmbbx_conn.count()):
item_text = self.cmbbx_conn.itemText(myCount)
if item_text == current_connection:
self.cmbbx_conn.setCurrentIndex(myCount)
break
def test_database_connection(self):
""" Test database connection has necessary tables
"""
connection = str(self.cmbbx_conn.currentText())
if not bool(connection.replace(" ", "")):
QMessageBox.information(
self,
"Database Connection",
"Please select a database connection")
else:
self.connection = connection
if self.connection:
ok = self.test_database_schema()
if not ok:
return
self.accept()
def test_database_schema(self):
"""Test whether co-go schema is applied in the database."""
query = "SELECT EXISTS (SELECT 1 AS result FROM pg_tables " \
"WHERE schemaname = 'public' AND tablename = 'beacons')"
extension_query = '''CREATE EXTENSION IF NOT EXISTS postgis ; '''
settings_postgis = QSettings()
settings_postgis.beginGroup('PostgreSQL/connections')
max_attempts = 3
is_credential_exist = True
db_service = settings_postgis.value(self.connection + '/service')
db_host = settings_postgis.value(self.connection + '/host')
db_port = settings_postgis.value(self.connection + '/port')
db_name = settings_postgis.value(self.connection + '/database')
db_username = settings_postgis.value(self.connection + '/username')
db_password = settings_postgis.value(self.connection + '/password')
uri = QgsDataSourceUri()
uri.setConnection(
db_host,
db_port,
db_name,
db_username,
db_password)
if not db_username and not db_password:
msg = "Please enter the username and password."
for i in range(max_attempts):
ok, db_username, db_password = (
QgsCredentials.instance().get(
uri.connectionInfo(),
db_username,
db_password,
msg
))
self.db_connection = None
if is_credential_exist:
if db_service:
self.db_connection = psycopg2.connect(
"service='{SERVICE}' user='{USER}' "
"password='{PASSWORD}'".format(
SERVICE=db_service,
USER=db_username,
PASSWORD=db_password
))
else:
self.db_connection = psycopg2.connect(
"host='{HOST}' dbname='{NAME}' user='{USER}' "
"password='{PASSWORD}' port='{PORT}'".format(
HOST=db_host,
NAME=db_name,
USER=db_username,
PASSWORD=db_password,
PORT=db_port
))
if self.db_connection:
cursor = self.db_connection.cursor()
cursor.execute(extension_query)
cursor.execute(query)
is_schema_valid = cursor.fetchall()[0][0]
del cursor
if is_schema_valid:
return True
else:
dialog = CrsSelectorDialog(self)
dialog.exec_()
crs = dialog.selected_srid
if crs:
query = open(
get_path("scripts", "database_setup.sql"), "r", encoding='UTF8').read()
query = query.replace(":CRS", "{CRS}").replace(":DATABASE", "{DATABASE}").replace(":DBOWNER",
"{DBOWNER}") \
.replace(":DB_HOST", "{DB_HOST}").replace(":DB_PORT", "{DB_PORT}").replace(":DB_PASS",
"{DB_PASS}")
cursor = self.db_connection.cursor()
# db_sql = query.format(CRS=crs, DATABASE=db_name, DBOWNER=db_username)
db_sql = query.format(CRS=crs, DATABASE=db_name, DBOWNER=db_username, DB_HOST=db_host,
DB_PORT=db_port, DB_PASS=db_password)
cursor.execute(db_sql)
self.db_connection.commit()
del cursor
return True
def setup_ui(self):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_from_utf8("DatabaseConnectionDialog"))
self.resize(370, 200)
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(True)
self.gridLayout = QGridLayout(self)
self.gridLayout.setObjectName(_from_utf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_from_utf8("verticalLayout"))
self.lbl_instr = QLabel(self)
self.lbl_instr.setWordWrap(True)
self.lbl_instr.setObjectName(_from_utf8("lbl_instr"))
self.verticalLayout.addWidget(self.lbl_instr)
self.formLayout = QFormLayout()
self.formLayout.setObjectName(_from_utf8("formLayout"))
self.lbl_conn = QLabel(self)
self.lbl_conn.setObjectName(_from_utf8("lbl_conn"))
self.formLayout.setWidget(0, QFormLayout.LabelRole, self.lbl_conn)
self.cmbbx_conn = QComboBox(self)
self.cmbbx_conn.setObjectName(_from_utf8("cmbbx_conn"))
self.formLayout.setWidget(0, QFormLayout.FieldRole, self.cmbbx_conn)
self.verticalLayout.addLayout(self.formLayout)
self.horizontalLayout = QHBoxLayout()
self.btn_new_conn = QPushButton("")
self.btn_new_conn.setObjectName(_from_utf8("new_conn"))
self.btn_new_conn.setMaximumSize(32, 32)
self.btn_new_conn.setIcon(QIcon(images_path("icons", "add.png")))
self.btn_refresh_conn = QPushButton("")
self.btn_refresh_conn.setObjectName(_from_utf8("refresh_conn"))
self.btn_refresh_conn.setMaximumSize(32, 32)
self.btn_refresh_conn.setIcon(
QIcon(images_path("icons", "refresh.png")))
self.horizontalLayout.addWidget(self.btn_new_conn)
self.horizontalLayout.addWidget(self.btn_refresh_conn)
self.horizontalLayout.setAlignment(Qt.AlignRight)
self.formLayout.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
self.formLayout.setLayout(
1, QFormLayout.FieldRole, self.horizontalLayout)
self.verticalLayout.addSpacerItem(QSpacerItem(50, 10))
self.btnbx_options = XQDialogButtonBox(self)
self.btnbx_options.setOrientation(Qt.Horizontal)
self.btnbx_options.setStandardButtons(
XQDialogButtonBox.Cancel | XQDialogButtonBox.Ok)
self.btnbx_options.setObjectName(_from_utf8("btnbx_options"))
self.verticalLayout.addWidget(self.btnbx_options)
self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
# translate ui widgets' text
self.setWindowTitle(QApplication.translate(
"DatabaseConnectionDialog",
"Database Connection",
None
))
self.lbl_conn.setText(QApplication.translate(
"DatabaseConnectionDialog",
"Connection: ",
None
))
self.lbl_instr.setText(QApplication.translate(
"DatabaseConnectionDialog",
"A database connection has not yet been selected or "
"is no longer valid. Please select a database connection or "
"define a new connection.",
None
))
self.btn_new_conn.setToolTip(QApplication.translate(
"DatabaseConnectionDialog",
"Add new PostgreSQL connection",
None
))
self.btn_refresh_conn.setToolTip(QApplication.translate(
"DatabaseConnectionDialog",
"Refresh available PostgreSQL connection",
None
))
# connect ui widgets
self.btnbx_options.accepted.connect(self.test_database_connection)
self.btnbx_options.rejected.connect(self.reject)
self.btn_new_conn.clicked.connect(self.create_new_connection)
self.btn_refresh_conn.clicked.connect(self.populate_database_choices)
QMetaObject.connectSlotsByName(self)
def create_new_connection(self):
dialog = NewDatabaseConnectionDialog(self)
dialog.exec_()
UI_CLASS = get_ui_class("ui_crsselector.ui")
class CrsSelectorDialog(QDialog, UI_CLASS):
"""This dialog enables the user to choose a crs for setting up
the database.
"""
def __init__(self, parent):
"""Constructor"""
QDialog.__init__(self, None)
self.setupUi(self)
self.parent = parent
self.db_connection = parent.db_connection
self.selected_srid = None
self.crs_combobox = ExtendedComboBox()
self.verticalLayout_2.addWidget(self.crs_combobox)
self.populate_combobox()
self.default_crs_radio.toggled.connect(self.toggle_crs_selectors)
self.toggle_crs_selectors(self.default_crs_radio.isChecked())
def populate_combobox(self):
"""Populate the crs combobox with available spatial reference system
from PostGIS.
"""
query = "SELECT auth_name, srid FROM public.spatial_ref_sys"
cursor = self.db_connection.cursor()
cursor.execute(query)
results = cursor.fetchall()
del cursor
dict_of_crs = {}
for result in results:
result = list(result)
for index, item in enumerate(result):
result[index] = str(item)
crs_string = ':'.join(result)
srid = int(result[1])
dict_of_crs[srid] = crs_string
ordered_dict_of_crs = OrderedDict(sorted(dict_of_crs.items()))
self.crs_combobox.setInsertPolicy(QComboBox.InsertAlphabetically)
for key, item in ordered_dict_of_crs.items():
self.crs_combobox.addItem(item, key)
def accept(self):
if self.default_crs_radio.isChecked():
selected_index = self.crs_combobox.currentIndex()
self.selected_srid = self.crs_combobox.itemData(selected_index)
else:
query = (
"INSERT into spatial_ref_sys (srid, auth_name, auth_srid, "
"proj4text, srtext) values ( {SRID}, '{AUTH_NAME}', "
"{AUTH_SRID}, '{PROJTEXT}', '{SRTEXT}')"
)
SRID = int(self.crs_custom_srid.text())
AUTH_SRID = int(self.crs_custom_auth_srid.text())
AUTH_NAME = self.crs_custom_auth_name.text()
PROJTEXT = self.crs_custom_proj4text.text()
SRTEXT = self.crs_custom_srtext.text()
cursor = self.db_connection.cursor()
try:
cursor.execute(
query.format(
SRID=SRID,
AUTH_NAME=AUTH_NAME,
AUTH_SRID=AUTH_SRID,
PROJTEXT=PROJTEXT,
SRTEXT=SRTEXT))
self.db_connection.commit()
self.selected_srid = SRID
except Exception as e:
QMessageBox.information(
self,
"Fail to execute",
"The query is failed to be executed with error: "
"{error_message}".format(error_message=e))
return
del cursor
QDialog.accept(self)
def toggle_crs_selectors(self, checked):
if checked:
self.crs_combobox.setEnabled(True)
self.crs_custom_srid.setEnabled(False)
self.crs_custom_auth_srid.setEnabled(False)
self.crs_custom_auth_name.setEnabled(False)
self.crs_custom_proj4text.setEnabled(False)
self.crs_custom_srtext.setEnabled(False)
else:
self.crs_combobox.setEnabled(False)
self.crs_custom_srid.setEnabled(True)
self.crs_custom_auth_srid.setEnabled(True)
self.crs_custom_auth_name.setEnabled(True)
self.crs_custom_proj4text.setEnabled(True)
self.crs_custom_srtext.setEnabled(True)
class SelectorDialog(QDialog):
""" This dialog enables the selection of single features on a
vector layer by means of the feature selector tool defined in
qgisToolbox
"""
def __init__(self,
database,
iface,
required_layer,
mode,
query,
preserve=False,
parent=None):
# initialize QDialog class
super(SelectorDialog, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setup_ui(required_layer, mode)
self.database = database
self.iface = iface
self.layer = required_layer
self.mode = mode
self.query = query
self.preserve = preserve
self.confirmed = False
self.feat_id = None
# initialize selector tool
self.selector = FeatureSelector(
iface, required_layer.layer, True, self)
# save qgis tool
self.tool = self.selector.parent_tool
def get_feature_id(self):
return self.feat_id
def execute_option(self, button):
""" Perform validation and close the dialog
"""
if self.btnbx_options.standardButton(button) == QDialogButtonBox.Ok:
# check that a feature has been selected
if self.feat_id is None:
QMessageBox.information(
self,
"No %s Selected" % (self.layer.name.title(),),
"Please select a %s." % (self.layer.name.lower()))
return
# check confirmation
if not self.confirmed:
QMessageBox.information(
self,
"No Confirmation",
"Please tick the confimation check box.")
return
# reset qgis tool
self.iface.mapCanvas().setMapTool(self.tool)
# remove selection if needed
if not self.preserve:
self.layer.layer.removeSelection()
# accept dialog
self.accept()
else:
# reset qgis tool
self.iface.mapCanvas().setMapTool(self.tool)
# remove selection
self.layer.layer.removeSelection()
# reject dialog
self.reject()
def captured(self, selected):
""" Notify the dialog of a feature selection and disable selecting
"""
# disable selector tool
self.selector.disable_capturing()
# update dialog
self.feat_id = selected[0]
self.lnedt_featID.setText(
str(self.database.query(self.query, (self.feat_id,))[0][0]))
self.pshbtn_re.setEnabled(True)
self.chkbx_confirm.setEnabled(True)
def reselect(self):
""" Blat original selection and re-enable selecting
"""
# update dialog
self.pshbtn_re.setEnabled(False)
self.chkbx_confirm.setEnabled(False)
self.lnedt_featID.setText("")
self.feat_id = None
# clear selector tool selection
self.selector.clear_selection()
# enable selector tool
self.selector.enable_capturing()
def confirm(self, state):
""" Confirm that the selected feature is correct
"""
self.pshbtn_re.setEnabled(not bool(state))
self.confirmed = bool(state)
def setup_ui(self, layer, mode):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_from_utf8("SelectorDialog"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.gridLayout = QGridLayout(self)
self.gridLayout.setSizeConstraint(QLayout.SetFixedSize)
self.gridLayout.setObjectName(_from_utf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_from_utf8("verticalLayout"))
self.splitter = QSplitter(self)
self.splitter.setOrientation(Qt.Horizontal)
self.splitter.setObjectName(_from_utf8("splitter"))
self.widget = QWidget(self.splitter)
self.widget.setObjectName(_from_utf8("widget"))
self.formLayout = QFormLayout(self.widget)
self.formLayout.setMargin(0)
self.formLayout.setObjectName(_from_utf8("formLayout"))
self.lbl_featID = QLabel(self.widget)
self.lbl_featID.setObjectName(_from_utf8("lbl_featID"))
self.formLayout.setWidget(0, QFormLayout.LabelRole, self.lbl_featID)
self.lnedt_featID = QLineEdit(self.widget)
self.lnedt_featID.setEnabled(False)
self.lnedt_featID.setObjectName(_from_utf8("lnedt_featID"))
self.formLayout.setWidget(0, QFormLayout.FieldRole, self.lnedt_featID)
self.pshbtn_re = QPushButton(self.splitter)
self.pshbtn_re.setEnabled(False)
self.pshbtn_re.setObjectName(_from_utf8("pshbtn_re"))
self.pshbtn_re.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout.addWidget(self.splitter)
self.chkbx_confirm = QCheckBox(self)
self.chkbx_confirm.setEnabled(False)
self.chkbx_confirm.setObjectName(_from_utf8("chkbx_confirm"))
self.chkbx_confirm.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout.addWidget(self.chkbx_confirm)
self.btnbx_options = QDialogButtonBox(self)
self.btnbx_options.setStandardButtons(
QDialogButtonBox.Cancel | QDialogButtonBox.Ok)
self.btnbx_options.setObjectName(_from_utf8("btnbx_options"))
self.btnbx_options.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout.addWidget(self.btnbx_options)
self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
# translate ui widgets' text
self.setWindowTitle(
QApplication.translate(
"SelectorDialog",
"%s %s" % (layer.name.title(), mode.actor.title()),
None))
self.lbl_featID.setText(
QApplication.translate(
"SelectorDialog",
"%s ID" % (layer.name.title()),
None))
self.pshbtn_re.setText(
QApplication.translate(
"SelectorDialog", "Re-select", None))
self.chkbx_confirm.setText(
QApplication.translate(
"SelectorDialog",
"I am sure I want to %s this %s" % (
mode.action.lower(), layer.name.lower()),
None))
# connect ui widgets
self.pshbtn_re.clicked.connect(self.reselect)
self.chkbx_confirm.stateChanged.connect(self.confirm)
self.btnbx_options.clicked.connect(self.execute_option)
QMetaObject.connectSlotsByName(self)
class ManagerDialog(QDialog):
""" This dialog enables the user to select an option
with regards to managing a vector layer
"""
def __init__(self, required_layer, parent=None):
super(ManagerDialog, self).__init__(parent, Qt.WindowStaysOnTopHint)
self.setup_ui(required_layer)
self.layer = required_layer
self.option = None
def get_option(self):
return self.option
def execute_option(self, button):
""" Perform validation and close the dialog
"""
if self.btnbx_options.standardButton(button) == QDialogButtonBox.Ok:
# get selected option
for index, radio_button in enumerate(
self.findChildren(QRadioButton)):
if radio_button.isChecked():
self.option = index
break
# check that an option was selected
if self.option is not None:
# accept dialog
self.accept()
else:
QMessageBox.information(
self,
"Invalid Selection",
"Please select an option before clicking OK")
else:
# reject dialog
self.reject()
def setup_ui(self, layer):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_from_utf8("ManagerDialog"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(False)
self.mainlyt = QGridLayout(self)
self.mainlyt.setSizeConstraint(QLayout.SetFixedSize)
self.mainlyt.setObjectName(_from_utf8("mainlyt"))
self.vrtlyt = QVBoxLayout()
self.vrtlyt.setObjectName(_from_utf8("vrtlyt"))
self.grdlyt = QGridLayout()
self.grdlyt.setObjectName(_from_utf8("grdlyt"))
self.rdbtn_add = QRadioButton(self)
self.rdbtn_add.setObjectName(_from_utf8("rdbtn_add"))
self.rdbtn_add.setCursor(QCursor(Qt.PointingHandCursor))
self.grdlyt.addWidget(self.rdbtn_add, 0, 0, 1, 1)
self.rdbtn_edit = QRadioButton(self)
self.rdbtn_edit.setObjectName(_from_utf8("rdbtn_edit"))
self.rdbtn_edit.setCursor(QCursor(Qt.PointingHandCursor))
self.grdlyt.addWidget(self.rdbtn_edit, 1, 0, 1, 1)
self.rdbtn_del = QRadioButton(self)
self.rdbtn_del.setObjectName(_from_utf8("rdbtn_del"))
self.rdbtn_del.setCursor(QCursor(Qt.PointingHandCursor))
self.grdlyt.addWidget(self.rdbtn_del, 2, 0, 1, 1)
self.vrtlyt.addLayout(self.grdlyt)
self.btnbx_options = QDialogButtonBox(self)
self.btnbx_options.setStandardButtons(
QDialogButtonBox.Cancel | QDialogButtonBox.Ok)
self.btnbx_options.setCenterButtons(False)
self.btnbx_options.setObjectName(_from_utf8("btnbx_options"))
self.btnbx_options.setCursor(QCursor(Qt.PointingHandCursor))
self.vrtlyt.addWidget(self.btnbx_options)
self.mainlyt.addLayout(self.vrtlyt, 0, 0, 1, 1)
# translate ui widgets' text
self.setWindowTitle(
QApplication.translate(
"ManagerDialog",
"%s Manager" % (layer.name.title()),
None))
self.rdbtn_add.setText(
QApplication.translate(
"ManagerDialog",
"Create New %s" % (layer.name.title()),
None))
self.rdbtn_edit.setText(
QApplication.translate(
"ManagerDialog",
"Edit Existing %s" % (layer.name.title()),
None))
self.rdbtn_del.setText(
QApplication.translate(
"ManagerDialog",
"Delete Existing %s" % (layer.name.title()),
None))
# connect ui widgets
self.btnbx_options.clicked.connect(self.execute_option)
QMetaObject.connectSlotsByName(self)
class FormBeaconDialog(QDialog):
""" This dialog enables a user to define and modify a beacon
"""
def __init__(self, database, query, fields, values=[], parent=None):
# initialize QDialog class
super(FormBeaconDialog, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setup_ui(fields)
# initialize instance variables
self.db = database
self.query = query
self.fields = fields
self.old_values = {}
self.new_values = {}
self.colours = {
"REQUIRED": "background-color: rgba(255, 107, 107, 150);",
"TYPE": "background-color: rgba(107, 107, 255, 150);",
"UNIQUE": "background-color: rgba(107, 255, 107, 150);"
}
# populate form if values are given
if bool(values):
self.populate_form(values)
def get_values(self):
""" Return intended variable(s) after the dialog has been accepted
"""
return (self.old_values, self.new_values)
def populate_form(self, values):
""" Populate form with given values
"""
for index, value in enumerate(values):
if value is not None:
self.lnedts[index].setText(str(value))
self.old_values[self.fields[index].name] = value
def execute_option(self, button):
""" Perform validation and close the dialog
"""
if self.options_buttonbox.standardButton(button) == \
QDialogButtonBox.Save:
values_new = {}
# check required fields
valid = True
for line_edit in self.lnedts:
if bool(line_edit.property("REQUIRED")):
if str(line_edit.text()).strip() is "":
line_edit.setStyleSheet(self.colours["REQUIRED"])
valid = False
else:
line_edit.setStyleSheet("")
if not valid:
QMessageBox.information(
self,
"Empty Required Fields",
"Please ensure that all required fields are completed.")
return
# check correct field types
valid = True
for index, line_edit in enumerate(self.lnedts):
try:
if str(line_edit.text()).strip() is not "":
cast = self.fields[index].type
tmp = cast(str(line_edit.text()).strip())
values_new[self.fields[index].name] = tmp
line_edit.setStyleSheet("")
else:
values_new[self.fields[index].name] = None
except Exception as e:
line_edit.setStyleSheet(self.colours["TYPE"])
valid = False
if not valid:
QMessageBox.information(
self,
"Invalid Field Types",
"Please ensure that fields are completed with valid types."
)
return
# check unique fields
valid = True
for index, line_edit in enumerate(self.lnedts):
if str(line_edit.text()).strip() is "":
continue
if bool(line_edit.property("UNIQUE")):
if self.fields[index].name in list(self.old_values.keys()) and \
values_new[self.fields[index].name] == \
self.old_values[self.fields[index].name]:
line_edit.setStyleSheet("")
elif bool(int(self.db.query(self.query % (
self.fields[index].name, "%s"),
(values_new[self.fields[index].name],))[0][0])):
line_edit.setStyleSheet(self.colours["UNIQUE"])
valid = False
else:
line_edit.setStyleSheet("")
if not valid:
QMessageBox.information(
self,
"Fields Not Unique",
"Please ensure that fields are given unique values.")
return
# save values
self.new_values = values_new
# accept dialog
self.accept()
else:
# reject dialog
self.reject()
def setup_ui(self, fields):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_from_utf8("FormBeaconDialog"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(True)
self.gridLayout = QGridLayout(self)
self.gridLayout.setSizeConstraint(QLayout.SetFixedSize)
self.gridLayout.setObjectName(_from_utf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_from_utf8("verticalLayout"))
self.formLayout = QFormLayout()
self.formLayout.setFieldGrowthPolicy(QFormLayout.AllNonFixedFieldsGrow)
self.formLayout.setObjectName(_from_utf8("formLayout"))
self.lbls = []
self.lnedts = []
# define form fields dynamically from the database schema
for index, f in enumerate(fields):
lbl = QLabel(self)
lbl.setObjectName(_from_utf8("lbl_%s" % (f.name,)))
self.formLayout.setWidget(index, QFormLayout.LabelRole, lbl)
self.lbls.append(lbl)
lnedt = QLineEdit(self)
lnedt.setProperty("REQUIRED", f.required)
lnedt.setProperty("UNIQUE", f.unique)
lnedt.setObjectName(_from_utf8("lnedt_%s" % (f.name,)))
self.formLayout.setWidget(index, QFormLayout.FieldRole, lnedt)
self.lnedts.append(lnedt)
lbl.setText(QApplication.translate(
"FormBeaconDialog",
("*" if bool(self.lnedts[index].property("REQUIRED"))
else "") + f.name.title(),
None))
lnedt.setProperty(
"TYPE",
QApplication.translate(
"FormBeaconDialog",
str(f.type),
None))
self.verticalLayout.addLayout(self.formLayout)
self.line_1 = QFrame(self)
self.line_1.setFrameShape(QFrame.HLine)
self.line_1.setFrameShadow(QFrame.Sunken)
self.line_1.setObjectName(_from_utf8("line_1"))
self.verticalLayout.addWidget(self.line_1)
self.label = QLabel(self)
self.label.setObjectName(_from_utf8("label"))
self.verticalLayout.addWidget(self.label)
self.line_2 = QFrame(self)
self.line_2.setFrameShape(QFrame.HLine)
self.line_2.setFrameShadow(QFrame.Sunken)
self.line_2.setObjectName(_from_utf8("line_2"))
self.verticalLayout.addWidget(self.line_2)
self.options_buttonbox = QDialogButtonBox(self)
self.options_buttonbox.setStandardButtons(
QDialogButtonBox.Cancel | QDialogButtonBox.Save)
self.options_buttonbox.setObjectName(_from_utf8("btnbx_options"))
self.options_buttonbox.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout.addWidget(self.options_buttonbox)
self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
# translate ui widgets' text
self.setWindowTitle(
QApplication.translate(
"FormBeaconDialog",
"Beacon Form",
None))
self.label.setText(
QApplication.translate(
"FormBeaconDialog",
"<html><head/><body><p><span style=\" color:#ff0000;\">"
"*Required Field</span></p></body></html>",
None))
# connect ui widgets
self.options_buttonbox.clicked.connect(self.execute_option)
QMetaObject.connectSlotsByName(self)
class FormParcelDialog(QDialog):
""" This dialog enables a user to define and modify a parcel
"""
def __init__(
self,
database,
iface,
required_layers,
SQL_BEACONS,
SQL_PARCELS,
autocomplete=[],
data={},
parent=None):
# initialize QDialog class
super(FormParcelDialog, self).__init__(parent, Qt.WindowStaysOnTopHint)