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PyQt4Dialogs.py
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PyQt4Dialogs.py
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# -*- coding: utf8 -*-
"""
Author: Robert Moerman
Contact: [email protected]
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 PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.gui import *
from qgis.core import *
from qgisToolbox import featureSelector
from PyQt4Widgets import XQPushButton, XQDialogButtonBox
from database import *
def _fromUtf8(s):
return s
# All dialogs using selector tool have a captured function
# All dialogs have a getReturn function
class dlg_DatabaseConnection(QDialog):
""" This dialog enables the user to choose a database connection
defined through DB Manager
"""
def __init__(self):
# initialize QDialog class
super(dlg_DatabaseConnection, self).__init__(None, Qt.WindowStaysOnTopHint)
# initialize ui
self.conn = None
self.setupUi()
self.populateDatabaseChoices()
def getDatabaseConnection(self):
return self.conn
def populateDatabaseChoices(self):
""" Populate database connection choices
"""
settings = QSettings()
settings.beginGroup('PostgreSQL/connections')
self.cmbbx_conn.addItem(_fromUtf8(""))
self.cmbbx_conn.setItemText(0, QApplication.translate(
"dlg_DatabaseConnection",
"",
None
))
for i,db in enumerate(settings.childGroups()):
self.cmbbx_conn.addItem(_fromUtf8(""))
self.cmbbx_conn.setItemText(i + 1, QApplication.translate(
"dlg_DatabaseConnection",
db,
None
))
def testDatabaseConnection(self):
""" Test database connection has necessary tables
"""
conn = str(self.cmbbx_conn.currentText())
if not bool(conn.replace(" ", "")):
QMessageBox.information(self, "Database Connection", "Please select a database connection")
else:
self.conn = conn
self.accept()
def setupUi(self):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_fromUtf8("dlg_DatabaseConnection"))
self.resize(370, 200)
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(True)
self.gridLayout = QGridLayout(self)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.lbl_instr = QLabel(self)
self.lbl_instr.setWordWrap(True)
self.lbl_instr.setObjectName(_fromUtf8("lbl_instr"))
self.verticalLayout.addWidget(self.lbl_instr)
self.formLayout = QFormLayout()
self.formLayout.setObjectName(_fromUtf8("formLayout"))
self.lbl_conn = QLabel(self)
self.lbl_conn.setObjectName(_fromUtf8("lbl_conn"))
self.formLayout.setWidget(0, QFormLayout.LabelRole, self.lbl_conn)
self.cmbbx_conn = QComboBox(self)
self.cmbbx_conn.setObjectName(_fromUtf8("cmbbx_conn"))
self.formLayout.setWidget(0, QFormLayout.FieldRole, self.cmbbx_conn)
self.verticalLayout.addLayout(self.formLayout)
self.lbl_aside = QLabel(self)
self.lbl_aside.setWordWrap(True)
self.lbl_aside.setObjectName(_fromUtf8("lbl_aside"))
self.verticalLayout.addWidget(self.lbl_aside)
self.btnbx_options = XQDialogButtonBox(self)
self.btnbx_options.setOrientation(Qt.Horizontal)
self.btnbx_options.setStandardButtons(XQDialogButtonBox.Cancel|XQDialogButtonBox.Ok)
self.btnbx_options.setObjectName(_fromUtf8("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(
"dlg_DatabaseConnection",
"Database Connection",
None,
QApplication.UnicodeUTF8
))
self.lbl_conn.setText(QApplication.translate(
"dlg_DatabaseConnection",
"Connection: ",
None
))
self.lbl_aside.setText(QApplication.translate(
"dlg_DatabaseConnection",
"*If your database connection cannot be found above then please define it through the PostGIS Connection Manager.",
None
))
self.lbl_instr.setText(QApplication.translate(
"dlg_DatabaseConnection",
"A database connection has not yet been selected or is no longer valid. Please select a database connection.",
None
))
# connect ui widgets
self.btnbx_options.accepted.connect(self.testDatabaseConnection)
self.btnbx_options.rejected.connect(self.reject)
QMetaObject.connectSlotsByName(self)
class dlg_Selector(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, db, iface, requiredLayer, mode, query, preserve = False, parent = None):
# initialize QDialog class
super(dlg_Selector, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setupUi(requiredLayer, mode)
self.db = db
self.iface = iface
self.layer = requiredLayer
self.mode = mode
self.query = query
self.preserve = preserve
self.confirmed = False
self.featID = None
# initialize selector tool
self.selector = featureSelector(iface, requiredLayer.layer, True, self)
# save qgis tool
self.tool = self.selector.parentTool
def getFeatureId(self):
return self.featID
def executeOption(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.featID 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.disableCapturing()
# update dialog
self.featID = selected[0]
self.lnedt_featID.setText(str(self.db.query(self.query, (self.featID,))[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.featID = None
# clear selector tool selection
self.selector.clearSelection()
# enable selector tool
self.selector.enableCapturing()
def confirm(self, state):
""" Confirm that the selected feature is correct
"""
self.pshbtn_re.setEnabled(not bool(state))
self.confirmed = bool(state)
def setupUi(self, layer, mode):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_fromUtf8("dlg_Selector"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.gridLayout = QGridLayout(self)
self.gridLayout.setSizeConstraint(QLayout.SetFixedSize)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.splitter = QSplitter(self)
self.splitter.setOrientation(Qt.Horizontal)
self.splitter.setObjectName(_fromUtf8("splitter"))
self.widget = QWidget(self.splitter)
self.widget.setObjectName(_fromUtf8("widget"))
self.formLayout = QFormLayout(self.widget)
self.formLayout.setMargin(0)
self.formLayout.setObjectName(_fromUtf8("formLayout"))
self.lbl_featID = QLabel(self.widget)
self.lbl_featID.setObjectName(_fromUtf8("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(_fromUtf8("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(_fromUtf8("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(_fromUtf8("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(_fromUtf8("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("dlg_Selector",
"%s %s" %(layer.name.title(), mode.actor.title()),
None,
QApplication.UnicodeUTF8))
self.lbl_featID.setText(QApplication.translate("dlg_Selector",
"%s ID" %(layer.name.title(),),
None,
QApplication.UnicodeUTF8))
self.pshbtn_re.setText(QApplication.translate("dlg_Selector",
"Re-select",
None,
QApplication.UnicodeUTF8))
self.chkbx_confirm.setText(QApplication.translate("dlg_Selector",
"I am sure I want to %s this %s" %(mode.action.lower(), layer.name.lower()),
None,
QApplication.UnicodeUTF8))
# connect ui widgets
self.pshbtn_re.clicked.connect(self.reselect)
self.chkbx_confirm.stateChanged.connect(self.confirm)
self.btnbx_options.clicked.connect(self.executeOption)
QMetaObject.connectSlotsByName(self)
class dlg_Manager(QDialog):
""" This dialog enables the user to select an option with regards to managing a vector layer
"""
def __init__(self, requiredLayer, parent=None):
super(dlg_Manager, self).__init__(parent, Qt.WindowStaysOnTopHint)
self.setupUi(requiredLayer)
self.layer = requiredLayer
self.option = None
def getOption(self):
return self.option
def executeOption(self, button):
""" Perform validation and close the dialog
"""
if self.btnbx_options.standardButton(button) == QDialogButtonBox.Ok:
# get selected option
for i, rdbtn in enumerate(self.findChildren(QRadioButton)):
if rdbtn.isChecked():
self.option = i
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 setupUi(self, layer):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_fromUtf8("dlg_Manager"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(True)
self.mainlyt = QGridLayout(self)
self.mainlyt.setSizeConstraint(QLayout.SetFixedSize)
self.mainlyt.setObjectName(_fromUtf8("mainlyt"))
self.vrtlyt = QVBoxLayout()
self.vrtlyt.setObjectName(_fromUtf8("vrtlyt"))
self.grdlyt = QGridLayout()
self.grdlyt.setObjectName(_fromUtf8("grdlyt"))
self.rdbtn_add = QRadioButton(self)
self.rdbtn_add.setObjectName(_fromUtf8("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(_fromUtf8("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(_fromUtf8("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(_fromUtf8("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(
"dlg_Manager",
"%s Manager" %(layer.name.title(),),
None,
QApplication.UnicodeUTF8
))
self.rdbtn_add.setText(QApplication.translate(
"dlg_Manager",
"Create New %s" %(layer.name.title(),),
None,
QApplication.UnicodeUTF8
))
self.rdbtn_edit.setText(QApplication.translate(
"dlg_Manager",
"Edit Existing %s" %(layer.name.title(),),
None,
QApplication.UnicodeUTF8
))
self.rdbtn_del.setText(QApplication.translate(
"dlg_Manager",
"Delete Existing %s" %(layer.name.title(),),
None,
QApplication.UnicodeUTF8
))
# connect ui widgets
self.btnbx_options.clicked.connect(self.executeOption)
QMetaObject.connectSlotsByName(self)
class dlg_FormBeacon(QDialog):
""" This dialog enables a user to define and modify a beacon
"""
def __init__(self, db, query, fields, values=[], parent = None):
# initialize QDialog class
super(dlg_FormBeacon, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setupUi(fields)
# initialize instance variables
self.db = db
self.query = query
self.fields = fields
self.values_old = {}
self.values_new = {}
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.populateForm(values)
def getValues(self):
""" Return intended variable(s) after the dialog has been accepted
"""
return (self.values_old, self.values_new)
def populateForm(self, values):
""" Populate form with given values
"""
for index,v in enumerate(values):
if v is not None: self.lnedts[index].setText(str(v))
self.values_old[self.fields[index].name] = v
def executeOption(self, button):
""" Perform validation and close the dialog
"""
if self.btnbx_options.standardButton(button) == QDialogButtonBox.Save:
values_new = {}
# check required fields
valid = True
for lnedt in self.lnedts:
if bool(lnedt.property("REQUIRED")):
if str(lnedt.text()).strip() is "":
lnedt.setStyleSheet(self.colours["REQUIRED"])
valid = False
else: lnedt.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,lnedt in enumerate(self.lnedts):
try:
if str(lnedt.text()).strip() is not "":
cast = self.fields[index].type
tmp = cast(str(lnedt.text()).strip())
values_new[self.fields[index].name] = tmp
lnedt.setStyleSheet("")
else:
values_new[self.fields[index].name] = None
except Exception as e:
lnedt.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,lnedt in enumerate(self.lnedts):
if str(lnedt.text()).strip() is "": continue
if bool(lnedt.property("UNIQUE")):
if self.fields[index].name in self.values_old.keys() and values_new[self.fields[index].name] == self.values_old[self.fields[index].name]:
lnedt.setStyleSheet("")
elif bool(int(self.db.query(self.query %(self.fields[index].name, "%s"), (values_new[self.fields[index].name],))[0][0])):
lnedt.setStyleSheet(self.colours["UNIQUE"])
valid = False
else: lnedt.setStyleSheet("")
if not valid:
QMessageBox.information(
self,
"Fields Not Unique",
"Please ensure that fields are given unique values."
)
return
# save values
self.values_new = values_new
# accept dialog
self.accept()
else:
# reject dialog
self.reject()
def setupUi(self, fields):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_fromUtf8("dlg_FormBeacon"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.setModal(True)
self.gridLayout = QGridLayout(self)
self.gridLayout.setSizeConstraint(QLayout.SetFixedSize)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.formLayout = QFormLayout()
self.formLayout.setFieldGrowthPolicy(QFormLayout.AllNonFixedFieldsGrow)
self.formLayout.setObjectName(_fromUtf8("formLayout"))
self.lbls = []
self.lnedts = []
# define form fields dynamically from the database schema
for index, f in enumerate(fields):
lbl = QLabel(self)
lbl.setObjectName(_fromUtf8("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(_fromUtf8("lnedt_%s" %(f.name,)))
self.formLayout.setWidget(index, QFormLayout.FieldRole, lnedt)
self.lnedts.append(lnedt)
lbl.setText(QApplication.translate("dlg_FormBeacon",
("*" if bool(self.lnedts[index].property("REQUIRED")) else "") + f.name.title(),
None,
QApplication.UnicodeUTF8))
lnedt.setProperty("TYPE", QApplication.translate("dlg_FormBeacon", str(f.type), None, QApplication.UnicodeUTF8))
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(_fromUtf8("line_1"))
self.verticalLayout.addWidget(self.line_1)
self.label = QLabel(self)
self.label.setObjectName(_fromUtf8("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(_fromUtf8("line_2"))
self.verticalLayout.addWidget(self.line_2)
self.btnbx_options = QDialogButtonBox(self)
self.btnbx_options.setStandardButtons(QDialogButtonBox.Cancel|QDialogButtonBox.Save)
self.btnbx_options.setObjectName(_fromUtf8("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("dlg_FormBeacon", "Beacon Form", None, QApplication.UnicodeUTF8))
self.label.setText(QApplication.translate("dlg_FormBeacon", "<html><head/><body><p><span style=\" color:#ff0000;\">*Required Field</span></p></body></html>", None, QApplication.UnicodeUTF8))
# connect ui widgets
self.btnbx_options.clicked.connect(self.executeOption)
QMetaObject.connectSlotsByName(self)
class dlg_FormParcel(QDialog):
""" This dialog enables a user to define and modify a parcel
"""
def __init__(self, db, iface, requiredLayers, SQL_BEACONS, SQL_PARCELS, autocomplete=[], data={}, parent=None):
# initialize QDialog class
super(dlg_FormParcel, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setupUi(autocomplete)
self.db = db
self.iface = iface
self.layers = requiredLayers
self.SQL_BEACONS = SQL_BEACONS
self.SQL_PARCELS = SQL_PARCELS
self.autocomplete = autocomplete
self.values_old = {}
self.values_new = {}
self.sequence = []
self.new_accepted = False
# initialize selector tool
self.selector = featureSelector(iface, requiredLayers[0].layer, False, self)
# save qgis tool
self.tool = self.selector.parentTool
# populate form if values are given
if bool(data):
self.populateForm(data)
self.pshbtn_reset.setEnabled(True)
def getValues(self):
return (self.values_old, self.values_new)
def populateForm(self, data):
""" Populte form with values given
"""
# get values
checker = lambda d, k: d[k] if k in d.keys() else None
feat_id = checker(data, "parcel_id")
feat_sequence = checker(data, "sequence")
# use values
if bool(feat_id):
# populate parcel_id
self.values_old["parcel_id"] = self.db.query(
self.SQL_PARCELS["SELECT"], (feat_id,)
)[0][0]
self.lnedt_parcelID.setText(str(self.values_old["parcel_id"]))
self.highlightFeature(self.layers[1].layer, feat_id)
if bool(feat_sequence):
# populate sequence
self.sequence = []
self.values_old["sequence"] = []
for id in feat_sequence:
beacon_id = str(self.db.query(self.SQL_BEACONS["SELECT"], (id,))[0][0])
self.sequence.append(beacon_id)
self.values_old["sequence"].append(beacon_id)
self.lstwdg_sequence.addItem(beacon_id.replace("\n",""))
self.highlightFeatures(self.layers[0].layer, feat_sequence)
self.selector.selected = feat_sequence
# update selector selection
self.selector.selected = feat_sequence
def highlightFeature(self, layer, feature):
""" Highlight a single feature on a vector layer
"""
self.highlightFeatures(layer, [feature,])
def highlightFeatures(self, layer, features):
""" Highlight multiple features on a vector layer
"""
layer.setSelectedFeatures(features)
def captured(self, selected):
""" Notify the dialog of a feature selection and disable selecting
"""
pass
def executeOption(self, button):
""" Perform validation and close the dialog
"""
if self.btnbx_options.standardButton(button) == QDialogButtonBox.Save:
parcel_id = str(self.lnedt_parcelID.text()).strip()
# check that parcel id exists
if parcel_id == "":
QMessageBox.information(
self,
"Invalid Parcel ID",
"Please enter a parcel ID."
)
return
# check that parcel id is an int
try:
int(parcel_id)
except ValueError:
QMessageBox.information(
self,
"Invalid Parcel ID",
"Please enter a number for the parcel ID."
)
return
# check that parcel id is valid (i.e. current, unique, available)
if "parcel_id" in self.values_old.keys() and str(self.values_old["parcel_id"]) == parcel_id:
pass
elif not bool(self.db.query(
self.SQL_PARCELS["UNIQUE"], (int(parcel_id),)
)[0][0]):
if not self.new_accepted and QMessageBox.question(
self,
'Confirm New Parcel ID',
"Are you sure you want to create a new parcel ID?",
QMessageBox.Yes,
QMessageBox.No
) == QMessageBox.No:
return
self.new_accepted = True
else:
if not bool(self.db.query(
self.SQL_PARCELS["AVAILABLE"],
(parcel_id,)
)[0][0]):
QMessageBox.information(
self,
"Duplicated Parcel ID",
"Please enter a unique or available parcel ID."
)
return
# check that at least 3 beacons exist within the sequence
if len(self.selector.selected) < 3:
QMessageBox.information(
self,
"Too Few Beacons",
"Please ensure that there are at least 3 beacons listed in the sequence."
)
return
# save parcel id
self.values_new["parcel_id"] = parcel_id
# save sequence
self.values_new["sequence"] = self.sequence
# reset qgis tool
self.iface.mapCanvas().setMapTool(self.tool)
# remove selection
for l in self.layers: l.layer.removeSelection()
# accept dialog
self.accept()
else:
# reset qgis tool
self.iface.mapCanvas().setMapTool(self.tool)
# remove selection
for l in self.layers: l.layer.removeSelection()
# accept dialog
self.reject()
def newBeacon(self):
""" Define a new beacon on the fly to be added to the parcel sequence
"""
# disable self
self.setEnabled(False)
# get fields
fields = self.db.getSchema(
self.layers[0].table, [
self.layers[0].geometry_column,
self.layers[0].primary_key
])
# display form
frm = dlg_FormBeacon(
self.db,
self.SQL_BEACONS["UNIQUE"],
fields
)
frm.show()
frm_ret = frm.exec_()
if bool(frm_ret):
# add beacon to database
values_old, values_new = frm.getValues()
id = self.db.query(
self.SQL_BEACONS["INSERT"].format(fields = ", ".join(sorted(values_new.keys())), values = ", ".join(["%s" for k in values_new.keys()])), [values_new[k] for k in sorted(values_new.keys())])[0][0]
self.iface.mapCanvas().refresh()
self.highlightFeature(self.layers[0].layer, id)
self.selector.appendSelection(id)
# enable self
self.setEnabled(True)
def startSeq(self):
""" Start sequence capturing
"""
# enable capturing
self.selector.enableCapturing()
# perform button stuffs
self.pshbtn_start.setEnabled(False)
self.pshbtn_reset.setEnabled(False)
self.pshbtn_stop.setEnabled(True)
self.pshbtn_new.setEnabled(True)
def stopSeq(self):
""" Stop sequence capturing
"""
# disable capturing
self.selector.disableCapturing()
# perform button stuffs
self.pshbtn_stop.setEnabled(False)
self.pshbtn_new.setEnabled(False)
self.lstwdg_sequence.clear()
self.sequence = []
for i in self.selector.selected:
beacon_id = str(self.db.query(self.SQL_BEACONS["SELECT"], (i,))[0][0])
self.sequence.append(beacon_id)
self.lstwdg_sequence.addItem(beacon_id.replace("\n",""))
self.pshbtn_start.setEnabled(True)
self.pshbtn_reset.setEnabled(True)
def resetSeq(self):
""" Reset captured sequence
"""
# clear selection
self.selector.clearSelection()
self.sequence = []
# clear sequence
self.lstwdg_sequence.clear()
# perform button stuffs
self.pshbtn_reset.setEnabled(False)
self.pshbtn_start.setEnabled(True)
def setupUi(self, autocomplete):
""" Initialize ui
"""
# define ui widgets
self.setObjectName(_fromUtf8("dlg_FormParcel"))
self.setCursor(QCursor(Qt.ArrowCursor))
self.gridLayout = QGridLayout(self)
self.gridLayout.setSizeConstraint(QLayout.SetFixedSize)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.verticalLayout_2 = QVBoxLayout()
self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
self.formLayout = QFormLayout()
self.formLayout.setObjectName(_fromUtf8("formLayout"))
self.lbl_parcelID = QLabel(self)
self.lbl_parcelID.setObjectName(_fromUtf8("lbl_parcelID"))
self.formLayout.setWidget(0, QFormLayout.LabelRole, self.lbl_parcelID)
self.lnedt_parcelID = QLineEdit(self)
self.lnedt_parcelID.setObjectName(_fromUtf8("lnedt_parcelID"))
self.formLayout.setWidget(0, QFormLayout.FieldRole, self.lnedt_parcelID)
model = QStringListModel()
model.setStringList(autocomplete)
completer = QCompleter()
completer.setCaseSensitivity(Qt.CaseInsensitive)
completer.setModel(model)
self.lnedt_parcelID.setCompleter(completer)
self.verticalLayout_2.addLayout(self.formLayout)
self.horizontalLayout_2 = QHBoxLayout()
self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
self.lbl_sequence = QLabel(self)
self.lbl_sequence.setObjectName(_fromUtf8("lbl_sequence"))
self.horizontalLayout_2.addWidget(self.lbl_sequence)
spacerItem_1 = QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum)
self.horizontalLayout_2.addItem(spacerItem_1)
self.pshbtn_new = QPushButton(self)
self.pshbtn_new.setEnabled(False)
self.pshbtn_new.setObjectName(_fromUtf8("pshbtn_new"))
self.pshbtn_new.setCursor(QCursor(Qt.PointingHandCursor))
self.horizontalLayout_2.addWidget(self.pshbtn_new)
self.verticalLayout_2.addLayout(self.horizontalLayout_2)
self.horizontalLayout_1 = QHBoxLayout()
self.horizontalLayout_1.setObjectName(_fromUtf8("horizontalLayout_1"))
self.verticalLayout_1 = QVBoxLayout()
self.verticalLayout_1.setObjectName(_fromUtf8("verticalLayout_1"))
self.pshbtn_start = QPushButton(self)
self.pshbtn_start.setEnabled(True)
self.pshbtn_start.setObjectName(_fromUtf8("pshbtn_start"))
self.pshbtn_start.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout_1.addWidget(self.pshbtn_start)
self.pshbtn_stop = QPushButton(self)
self.pshbtn_stop.setEnabled(False)
self.pshbtn_stop.setObjectName(_fromUtf8("pshbtn_stop"))
self.pshbtn_stop.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout_1.addWidget(self.pshbtn_stop)
self.pshbtn_reset = QPushButton(self)
self.pshbtn_reset.setEnabled(False)
self.pshbtn_reset.setObjectName(_fromUtf8("pshbtn_reset"))
self.pshbtn_reset.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout_1.addWidget(self.pshbtn_reset)
spacerItem_2 = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
self.verticalLayout_1.addItem(spacerItem_2)
self.horizontalLayout_1.addLayout(self.verticalLayout_1)
self.lstwdg_sequence = QListWidget(self)
self.lstwdg_sequence.setEnabled(False)
self.lstwdg_sequence.setObjectName(_fromUtf8("lstwdg_sequence"))
self.horizontalLayout_1.addWidget(self.lstwdg_sequence)
self.verticalLayout_2.addLayout(self.horizontalLayout_1)
self.btnbx_options = QDialogButtonBox(self)
self.btnbx_options.setStandardButtons(QDialogButtonBox.Cancel|QDialogButtonBox.Save)
self.btnbx_options.setObjectName(_fromUtf8("btnbx_options"))
self.btnbx_options.setCursor(QCursor(Qt.PointingHandCursor))
self.verticalLayout_2.addWidget(self.btnbx_options)
self.gridLayout.addLayout(self.verticalLayout_2, 0, 0, 1, 1)
# translate ui widgets' text
self.setWindowTitle(QApplication.translate("dlg_FormParcel",
"Parcel Form", None, QApplication.UnicodeUTF8))
self.lbl_parcelID.setText(QApplication.translate("dlg_FormParcel",
"Parcel ID", None, QApplication.UnicodeUTF8))
self.lbl_sequence.setText(QApplication.translate("dlg_FormParcel",
"Beacon Sequence", None, QApplication.UnicodeUTF8))
self.pshbtn_new.setText(QApplication.translate("dlg_FormParcel",
"New Beacon", None, QApplication.UnicodeUTF8))
self.pshbtn_start.setText(QApplication.translate("dlg_FormParcel",
"Start", None, QApplication.UnicodeUTF8))
self.pshbtn_stop.setText(QApplication.translate("dlg_FormParcel",
"Stop", None, QApplication.UnicodeUTF8))
self.pshbtn_reset.setText(QApplication.translate("dlg_FormParcel",
"Reset", None, QApplication.UnicodeUTF8))
# connect ui widgets
self.pshbtn_new.clicked.connect(self.newBeacon)
self.pshbtn_start.clicked.connect(self.startSeq)
self.pshbtn_stop.clicked.connect(self.stopSeq)
self.pshbtn_reset.clicked.connect(self.resetSeq)
self.btnbx_options.clicked.connect(self.executeOption)
QMetaObject.connectSlotsByName(self)
class dlg_FormBearDist(QDialog):
""" This dialog enables the user to define bearings and distances
"""
def __init__(self, db, SQL_BEARDIST, SQL_BEACONS, requiredLayers, parent = None):
# initialize QDialog class
super(dlg_FormBearDist, self).__init__(parent, Qt.WindowStaysOnTopHint)
# initialize ui
self.setupUi()
self.db = db
self.SQL_BEARDIST = SQL_BEARDIST
self.SQL_BEACONS = SQL_BEACONS
self.layers = requiredLayers
self.auto = {
"SURVEYPLAN":self.db.query(
SQL_BEARDIST["AUTO_SURVEYPLAN"]
)[0][0],
"REFERENCEBEACON":self.db.query(
SQL_BEARDIST["AUTO_REFERENCEBEACON"]
)[0][0],
"FROMBEACON":[]
}
self.surveyPlan = None
self.referenceBeacon = None
self.beardistChain = []
self.beardistStr = "%s" + u"\u00B0" + " and %sm from %s to %s"
# initialize initial step
self.initItemSurveyPlan()
def getReturn(self):
""" Return intended variable(s) after the dialog has been accepted
@returns (<survey plan number>, <reference beacon>, <beardist chain>) (tuple)
"""
return (self.surveyPlan, self.referenceBeacon, self.beardistChain)
def setCurrentItem(self, index, clear=False, enabled=False):
""" Set the current toolbox item and disable all other toolbox items
"""
# clear editable fields if needed
if clear:
for widget in self.tlbx.widget(index).findChildren(QWidget):
if type(widget) in [QLineEdit]:
widget.setText("")
# enable editable fields if needed
if enabled:
for widget in self.tlbx.widget(index).findChildren(QWidget):
if type(widget) in [QLineEdit]:
widget.setEnabled(True)
# disable all items
for i in range(self.count):
self.tlbx.setItemEnabled(i, False)
# enable and display desired item
self.tlbx.setCurrentIndex(index)
self.tlbx.setItemEnabled(index, True)
def initItemSurveyPlan(self, forward=True):
""" Initialize form elements for the survey plan item
"""
if not forward:
if not self.confirmBack():
return
# update autocompletion
model = QStringListModel()
model.setStringList(self.auto["SURVEYPLAN"])
completer = QCompleter()
completer.setCaseSensitivity(Qt.CaseInsensitive)
completer.setModel(model)
self.lnedt_plan.setCompleter(completer)
# reset variables associated with item
self.surveyPlan = None
# display survey plan item
self.setCurrentItem(0)
def checkItemSurveyPlan(self, forward):
""" Validate form elements before proceding from the survey plan item
"""
# check direction
if forward:
# check that a server plan number was specified
surveyPlan = str(self.lnedt_plan.text()).strip()
if surveyPlan is "":
QMessageBox.information(
self,
"Empty Survey Plan Number",
"Please enter a surver plan number."
)
return
# set survey plan number
self.surveyPlan = surveyPlan
# display next toolbox item
self.initItemReferenceBeacon()
else: pass
def initItemReferenceBeacon(self, forward=True):
""" Initialize form elements for the reference beacon item
"""
if not forward:
if not self.confirmBack():
return
# update autocompletion
model = QStringListModel()
model.setStringList(self.auto["REFERENCEBEACON"])
completer = QCompleter()
completer.setCaseSensitivity(Qt.CaseInsensitive)
completer.setModel(model)
self.lnedt_ref.setCompleter(completer)
# reset variables associated with items
self.referenceBeacon = None
# check direction whence it came
if forward:
# check if survey plan number has a pre-defined reference beacon
if self.surveyPlan in self.auto["SURVEYPLAN"]:
# update item contents
self.lnedt_ref.setEnabled(False)
self.lnedt_ref.setText(str(self.db.query(
self.SQL_BEARDIST["EXIST_REFERENCEBEACON"],
(self.surveyPlan,)
)[0][0]))
else:
# update item contents
self.lnedt_ref.setEnabled(True)
self.lnedt_ref.setText("")
# display reference beacon item
self.setCurrentItem(1)
def checkItemReferenceBeacon(self, forward):
""" Validate form elements before proceding from the reference beacon item