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OutputSelectionPanel.py
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OutputSelectionPanel.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
OutputSelectionPanel.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* 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. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import re
import os
from PyQt4 import uic
from PyQt4.QtCore import QCoreApplication, QSettings
from PyQt4.QtGui import QDialog, QMenu, QAction, QCursor, QFileDialog
from qgis.gui import QgsEncodingFileDialog
from qgis.core import *
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.outputs import OutputVector
from processing.core.outputs import OutputDirectory
from processing.gui.PostgisTableSelector import PostgisTableSelector
pluginPath = os.path.split(os.path.dirname(__file__))[0]
WIDGET, BASE = uic.loadUiType(
os.path.join(pluginPath, 'ui', 'widgetBaseSelector.ui'))
class OutputSelectionPanel(BASE, WIDGET):
SAVE_TO_TEMP_FILE = QCoreApplication.translate(
'OutputSelectionPanel', '[Save to temporary file]')
def __init__(self, output, alg):
super(OutputSelectionPanel, self).__init__(None)
self.setupUi(self)
self.output = output
self.alg = alg
if hasattr(self.leText, 'setPlaceholderText'):
self.leText.setPlaceholderText(self.SAVE_TO_TEMP_FILE)
self.btnSelect.clicked.connect(self.selectOutput)
def selectOutput(self):
if isinstance(self.output, OutputDirectory):
self.selectDirectory()
else:
popupMenu = QMenu()
actionSaveToTempFile = QAction(
self.tr('Save to a temporary file'), self.btnSelect)
actionSaveToTempFile.triggered.connect(self.saveToTemporaryFile)
popupMenu.addAction(actionSaveToTempFile)
actionSaveToFile = QAction(
self.tr('Save to file...'), self.btnSelect)
actionSaveToFile.triggered.connect(self.selectFile)
popupMenu.addAction(actionSaveToFile)
if isinstance(self.output, OutputVector) \
and self.alg.provider.supportsNonFileBasedOutput():
actionSaveToMemory = QAction(
self.tr('Save to memory layer'), self.btnSelect)
actionSaveToMemory.triggered.connect(self.saveToMemory)
popupMenu.addAction(actionSaveToMemory)
actionSaveToPostGIS = QAction(
self.tr('Save to PostGIS table...'), self.btnSelect)
actionSaveToPostGIS.triggered.connect(self.saveToPostGIS)
settings = QSettings()
settings.beginGroup('/PostgreSQL/connections/')
names = settings.childGroups()
settings.endGroup()
actionSaveToPostGIS.setEnabled(bool(names))
popupMenu.addAction(actionSaveToPostGIS)
popupMenu.exec_(QCursor.pos())
def saveToTemporaryFile(self):
self.leText.setText('')
def saveToPostGIS(self):
dlg = PostgisTableSelector(self, self.output.name.lower())
dlg.exec_()
if dlg.connection:
settings = QSettings()
mySettings = '/PostgreSQL/connections/' + dlg.connection
dbname = settings.value(mySettings + '/database')
user = settings.value(mySettings + '/username')
host = settings.value(mySettings + '/host')
port = settings.value(mySettings + '/port')
password = settings.value(mySettings + '/password')
uri = QgsDataSourceURI()
uri.setConnection(host, str(port), dbname, user, password)
uri.setDataSource(dlg.schema, dlg.table, "the_geom")
connInfo = uri.connectionInfo()
(success, user, passwd ) = QgsCredentials.instance().get(connInfo, None, None)
if success:
QgsCredentials.instance().put(connInfo, user, passwd)
self.leText.setText("postgis:" + uri.uri())
def saveToMemory(self):
self.leText.setText('memory:')
def selectFile(self):
fileFilter = self.output.getFileFilter(self.alg)
settings = QSettings()
if settings.contains('/Processing/LastOutputPath'):
path = settings.value('/Processing/LastOutputPath')
else:
path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER)
encoding = settings.value('/Processing/encoding', 'System')
fileDialog = QgsEncodingFileDialog(
self, self.tr('Save file'), path, fileFilter, encoding)
fileDialog.setFileMode(QFileDialog.AnyFile)
fileDialog.setAcceptMode(QFileDialog.AcceptSave)
fileDialog.setConfirmOverwrite(True)
if fileDialog.exec_() == QDialog.Accepted:
files = fileDialog.selectedFiles()
encoding = unicode(fileDialog.encoding())
self.output.encoding = encoding
fileName = unicode(files[0])
selectedFileFilter = unicode(fileDialog.selectedNameFilter())
if not fileName.lower().endswith(
tuple(re.findall("\*(\.[a-z]{1,10})", fileFilter))):
ext = re.search("\*(\.[a-z]{1,10})", selectedFileFilter)
if ext:
fileName += ext.group(1)
self.leText.setText(fileName)
settings.setValue('/Processing/LastOutputPath',
os.path.dirname(fileName))
settings.setValue('/Processing/encoding', encoding)
def selectDirectory(self):
lastDir = ''
dirName = QFileDialog.getExistingDirectory(self,self.tr('Select directory'),
lastDir, QFileDialog.ShowDirsOnly)
self.leText.setText(dirName)
def getValue(self):
fileName = unicode(self.leText.text())
if fileName.strip() in ['', self.SAVE_TO_TEMP_FILE]:
value = None
elif fileName.startswith('memory:'):
value = fileName
elif fileName.startswith('postgis:'):
value = fileName
elif not os.path.isabs(fileName):
value = ProcessingConfig.getSetting(
ProcessingConfig.OUTPUT_FOLDER) + os.sep + fileName
else:
value = fileName
return value