# -*- 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. * * * *************************************************************************** """ from builtins import str __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 qgis.PyQt import uic from qgis.PyQt.QtCore import QCoreApplication from qgis.PyQt.QtWidgets import QDialog, QMenu, QAction, QFileDialog from qgis.PyQt.QtGui import QCursor from qgis.gui import QgsEncodingFileDialog, QgsExpressionBuilderDialog from qgis.core import (QgsDataSourceUri, QgsCredentials, QgsExpression, QgsSettings, QgsProcessingParameterFeatureSink, QgsProcessingOutputLayerDefinition) from processing.core.ProcessingConfig import ProcessingConfig from processing.core.outputs import OutputVector from processing.core.outputs import OutputDirectory from processing.tools.dataobjects import createContext from processing.gui.PostgisTableSelector import PostgisTableSelector from processing.gui.ParameterGuiUtils import getFileFilter pluginPath = os.path.split(os.path.dirname(__file__))[0] WIDGET, BASE = uic.loadUiType( os.path.join(pluginPath, 'ui', 'widgetBaseSelector.ui')) class DestinationSelectionPanel(BASE, WIDGET): SAVE_TO_TEMP_FILE = QCoreApplication.translate( 'DestinationSelectionPanel', '[Save to temporary file]') SAVE_TO_TEMP_LAYER = QCoreApplication.translate( 'DestinationSelectionPanel', '[Create temporary layer]') def __init__(self, parameter, alg): super(DestinationSelectionPanel, self).__init__(None) self.setupUi(self) self.parameter = parameter self.alg = alg settings = QgsSettings() self.encoding = settings.value('/Processing/encoding', 'System') if hasattr(self.leText, 'setPlaceholderText'): if isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and alg.provider().supportsNonFileBasedOutput(): # use memory layers for temporary files if supported self.leText.setPlaceholderText(self.SAVE_TO_TEMP_LAYER) else: self.leText.setPlaceholderText(self.SAVE_TO_TEMP_FILE) self.btnSelect.clicked.connect(self.selectOutput) def selectOutput(self): if isinstance(self.parameter, OutputDirectory): self.selectDirectory() else: popupMenu = QMenu() if isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and self.alg.provider().supportsNonFileBasedOutput(): # use memory layers for temporary layers if supported actionSaveToTemp = QAction( self.tr('Create temporary layer'), self.btnSelect) else: actionSaveToTemp = QAction( self.tr('Save to a temporary file'), self.btnSelect) actionSaveToTemp.triggered.connect(self.saveToTemporary) popupMenu.addAction(actionSaveToTemp) actionSaveToFile = QAction( self.tr('Save to file...'), self.btnSelect) actionSaveToFile.triggered.connect(self.selectFile) popupMenu.addAction(actionSaveToFile) actionShowExpressionsBuilder = QAction( self.tr('Use expression...'), self.btnSelect) actionShowExpressionsBuilder.triggered.connect(self.showExpressionsBuilder) popupMenu.addAction(actionShowExpressionsBuilder) if isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and self.alg.provider().supportsNonFileBasedOutput(): actionSaveToSpatialite = QAction( self.tr('Save to Spatialite table...'), self.btnSelect) actionSaveToSpatialite.triggered.connect(self.saveToSpatialite) popupMenu.addAction(actionSaveToSpatialite) actionSaveToPostGIS = QAction( self.tr('Save to PostGIS table...'), self.btnSelect) actionSaveToPostGIS.triggered.connect(self.saveToPostGIS) settings = QgsSettings() settings.beginGroup('/PostgreSQL/connections/') names = settings.childGroups() settings.endGroup() actionSaveToPostGIS.setEnabled(bool(names)) popupMenu.addAction(actionSaveToPostGIS) popupMenu.exec_(QCursor.pos()) def showExpressionsBuilder(self): context = self.alg.createExpressionContext({}, createContext()) dlg = QgsExpressionBuilderDialog(None, self.leText.text(), self, 'generic', context) dlg.setWindowTitle(self.tr('Expression based output')) if dlg.exec_() == QDialog.Accepted: expression = QgsExpression(dlg.expressionText()) self.leText.setText(expression.evaluate(context)) def saveToTemporary(self): self.leText.setText('') def saveToPostGIS(self): dlg = PostgisTableSelector(self, self.parameter.name().lower()) dlg.exec_() if dlg.connection: settings = QgsSettings() 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" if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None) 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 saveToSpatialite(self): fileFilter = self.tr('SpatiaLite files (*.sqlite)', 'OutputFile') settings = QgsSettings() if settings.contains('/Processing/LastOutputPath'): path = settings.value('/Processing/LastOutputPath') else: path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER) fileDialog = QgsEncodingFileDialog( self, self.tr('Save Spatialite'), path, fileFilter, self.encoding) fileDialog.setFileMode(QFileDialog.AnyFile) fileDialog.setAcceptMode(QFileDialog.AcceptSave) fileDialog.setOption(QFileDialog.DontConfirmOverwrite, True) if fileDialog.exec_() == QDialog.Accepted: files = fileDialog.selectedFiles() self.encoding = str(fileDialog.encoding()) fileName = str(files[0]) selectedFileFilter = str(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) settings.setValue('/Processing/LastOutputPath', os.path.dirname(fileName)) settings.setValue('/Processing/encoding', self.encoding) uri = QgsDataSourceUri() uri.setDatabase(fileName) uri.setDataSource('', self.parameter.name().lower(), 'the_geom' if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None) self.leText.setText("spatialite:" + uri.uri()) def selectFile(self): fileFilter = getFileFilter(self.parameter) settings = QgsSettings() if settings.contains('/Processing/LastOutputPath'): path = settings.value('/Processing/LastOutputPath') else: path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER) fileDialog = QgsEncodingFileDialog( self, self.tr('Save file'), path, fileFilter, self.encoding) fileDialog.setFileMode(QFileDialog.AnyFile) fileDialog.setAcceptMode(QFileDialog.AcceptSave) fileDialog.setOption(QFileDialog.DontConfirmOverwrite, False) if fileDialog.exec_() == QDialog.Accepted: files = fileDialog.selectedFiles() self.encoding = str(fileDialog.encoding()) fileName = str(files[0]) selectedFileFilter = str(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', self.encoding) def selectDirectory(self): lastDir = '' dirName = QFileDialog.getExistingDirectory(self, self.tr('Select directory'), lastDir, QFileDialog.ShowDirsOnly) self.leText.setText(dirName) def getValue(self): key = None if not self.leText.text(): if isinstance(self.parameter, QgsProcessingParameterFeatureSink): key = 'memory:' else: key = self.leText.text() value = QgsProcessingOutputLayerDefinition(key) value.createOptions = {'fileEncoding': self.encoding} return value