コード例 #1
0
class QgsWpsDockWidget(QDockWidget, Ui_QgsWpsDockWidget):
    """
    Class documentation goes here.
    """

    killed = pyqtSignal()
    bookmarksChanged = pyqtSignal()

    def __init__(self, iface):
        """
        Constructor
        """
        QDockWidget.__init__(self, iface.mainWindow())
        self.setupUi(self)
        self.iface = iface
        self.tools = QgsWpsTools(self.iface)
        self.dataStream = None  # Used for streaming
        self.setWindowTitle('QGIS WPS-Client ' + version())

        self.defaultServers = {
            'Kappasys WPS':
            'https://kappasys.ch/cgi-bin/pywps.cgi',
            '52 North':
            'http://geoprocessing.demo.52north.org:8080/wps/WebProcessingService'
        }

        flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
        self.dlg = QgsWpsGui(self.iface.mainWindow(), flags)
        self.dlg.getDescription.connect(self.getDescription)
        self.dlg.newServer.connect(self.newServer)
        self.dlg.editServer.connect(self.editServer)
        self.dlg.deleteServer.connect(self.deleteServer)
        self.dlg.pushDefaultServer.clicked.connect(self.pushDefaultServer)
        self.dlg.requestDescribeProcess.connect(self.requestDescribeProcess)
        #        self.dlg.bookmarksChanged.connect()"), self, SIGNAL("bookmarksChanged()"))

        self.killed.connect(self.stopStreaming)

    def getDescription(self, name, item):
        self.requestDescribeProcess(name, item.text(0))

    def requestDescribeProcess(self, serverName, processIdentifier):
        server = WpsServer.getServer(serverName)
        self.process = ProcessDescription(server, processIdentifier)
        self.process.describeProcessFinished.connect(self.createProcessGUI)
        self.process.requestDescribeProcess()

    def setStatus(self, status, done=0, total=0):
        complete = status == "aborted" or status == "finished" or status == "error"

        self.progressBar.setRange(done, total)
        if status == "upload" and done == total:
            status = "processing"
            done = total = 0

        self.btnConnect.setEnabled(complete)
        self.btnKill.setEnabled(not complete)
        if complete:
            self.progressBar.setRange(0, 100)
            self.progressBar.setValue(100)
        else:
            self.progressBar.setRange(0, total)
            self.progressBar.setValue(done)

        if status == 'upload':
            text = QApplication.translate("QgsWps", " upload data ...")
        elif status == 'processing':
            text = QApplication.translate("QgsWps", " is running ...")
        elif status == 'download':
            text = QApplication.translate("QgsWps", " download data ...")
        elif status == 'finished':
            text = QApplication.translate("QgsWps", " finished successfully")
        elif status == 'error':
            text = QApplication.translate("QgsWps", " terminated with errors!")
        elif status == 'aborted':
            text = QApplication.translate("QgsWps", " was aborted!")

        self.statusLabel.setText(pystring(self.processIdentifier + text))

    @pyqtSignature("")
    def on_btnConnect_clicked(self):
        self.dlg.initQgsWpsGui()
        self.statusLabel.setText("")
        self.progressBar.setRange(0, 100)
        self.progressBar.setValue(0)
        self.dlg.show()

    def createProcessGUI(self):
        """Create the GUI for a selected WPS process based on the DescribeProcess
           response document. Mandatory inputs are marked as red, default is black"""

        # Lists which store the inputs and meta information (format, occurs, ...)
        # This list is initialized every time the GUI is created
        self.complexInputComboBoxList = [
        ]  # complex input for single raster and vector maps
        self.complexInputListWidgetList = [
        ]  # complex input for multiple raster and vector maps
        self.complexInputTextBoxList = []  # complex inpt of type text/plain
        self.literalInputComboBoxList = [
        ]  # literal value list with selectable answers
        self.literalInputLineEditList = [
        ]  # literal value list with single text line input
        self.bboxInputLineEditList = [
        ]  # bbox value list with single text line input
        self.complexOutputComboBoxList = []  # list combo box
        self.inputDataTypeList = {}
        self.outputDataTypeList = {}

        flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags

        self.processUrl = self.process.processUrl
        self.processIdentifier = self.process.processIdentifier
        self.processName = self.process.processName

        # Create the layouts and the scroll area
        self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
        self.dlgProcessLayout = QGridLayout()
        # Two tabs, one for the process inputs and one for the documentation
        # TODO: add a tab for literal outputs
        self.dlgProcessTab = QTabWidget()
        self.dlgProcessTabFrame = QFrame()
        self.dlgProcessTabFrameLayout = QGridLayout()
        # The process description can be very long, so we make it scrollable
        self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

        self.dlgProcessScrollAreaWidget = QFrame()
        self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

        # First part of the gui is a short overview about the process
        self.identifier = self.process.identifier
        title = self.process.title
        abstract = self.process.abstract
        self.addIntroduction(self.identifier, title)

        # If no Input Data  are requested
        if len(self.process.inputs) == 0:
            self.defineProcess()
            return 0

        # Generate the input GUI buttons and widgets

        res = self.generateProcessInputsGUI()
        if res == 0:
            return 0

        # Generate the editable outpt widgets, you can set the output to none if it is not requested
        self.generateProcessOutputsGUI()

        self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
        self.dlgProcessScrollAreaWidget.setLayout(
            self.dlgProcessScrollAreaWidgetLayout)
        self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
        self.dlgProcessScrollArea.setWidgetResizable(True)

        self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

        self.addOkCancelButtons(self.dlgProcess, self.dlgProcessTabFrameLayout)

        self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
        self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

        self.tools.addDocumentationTab(self.dlgProcessTab, abstract)

        self.dlgProcessLayout.addWidget(self.dlgProcessTab)
        self.dlgProcess.setLayout(self.dlgProcessLayout)
        self.dlgProcess.setGeometry(QRect(190, 100, 800, 600))
        self.dlgProcess.show()

    def generateProcessInputsGUI(self):
        """Generate the GUI for all Inputs defined in the process description XML file"""
        for input in self.process.inputs:
            inputType = type(input)
            inputIdentifier = input.identifier
            title = input.title
            minOccurs = input.minOccurs
            if inputType == VectorInput or inputType == MultipleVectorInput:
                complexDataFormat = input.dataFormat
                self.inputDataTypeList[inputIdentifier] = complexDataFormat
                layerNamesList = self.tools.getLayerNameList(0)
                if inputType == VectorInput:
                    self.complexInputComboBoxList.append(
                        self.tools.addComplexInputComboBox(
                            title, inputIdentifier, str(complexDataFormat),
                            layerNamesList, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout))
                else:
                    self.complexInputListWidgetList.append(
                        self.tools.addComplexInputListWidget(
                            title, inputIdentifier, str(complexDataFormat),
                            layerNamesList, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout))
            elif inputType == StringInput:
                dValue = input.defaultValue
                self.literalInputLineEditList.append(
                    self.tools.addLiteralLineEdit(
                        title, inputIdentifier, minOccurs,
                        self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout, dValue))
            elif inputType == TextInput:
                complexDataFormat = input.dataFormat
                if isMimeTypePlaylist(complexDataFormat["MimeType"]) != None:
                    self.inputDataTypeList[inputIdentifier] = complexDataFormat
                    # Playlist (text) inputs
                    self.complexInputTextBoxList.append(
                        self.tools.addComplexInputTextBox(
                            title, inputIdentifier, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                            str(complexDataFormat)))
                else:
                    self.complexInputTextBoxList.append(
                        self.tools.addComplexInputTextBox(
                            title, inputIdentifier, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout))
            elif inputType == RasterInput or inputType == MultipleRasterInput:
                complexDataFormat = input.dataFormat
                self.inputDataTypeList[inputIdentifier] = complexDataFormat
                layerNamesList = self.tools.getLayerNameList(1)
                if inputType == RasterInput:
                    self.complexInputComboBoxList.append(
                        self.tools.addComplexInputComboBox(
                            title, inputIdentifier, str(complexDataFormat),
                            layerNamesList, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout))
                else:
                    self.complexInputListWidgetList.append(
                        self.tools.addComplexInputListWidget(
                            title, inputIdentifier, str(complexDataFormat),
                            layerNamesList, minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout))
            elif inputType == SelectionInput:
                valList = input.valList
                self.literalInputComboBoxList.append(
                    self.tools.addLiteralComboBox(
                        title, inputIdentifier, valList, minOccurs,
                        self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout))
            elif inputType == ExtentInput:
                myExtent = pystring(self.iface.mapCanvas().extent()).replace(
                    ':', ',')
                self.bboxInputLineEditList.append(
                    self.tools.addLiteralLineEdit(
                        title + "(minx,miny,maxx,maxy)", inputIdentifier,
                        minOccurs, self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout, myExtent))
            elif inputType == CrsInput:
                crsListe = input.crsList
#                self.literalInputComboBoxList.append(self.tools.addLiteralComboBox("Supported CRS", inputIdentifier, crsListe, minOccurs,  self.dlgProcessScrollAreaWidget,  self.dlgProcessScrollAreaWidgetLayout))

        self.tools.addCheckBox(
            QCoreApplication.translate("QgsWps",
                                       "Process selected objects only"),
            QCoreApplication.translate("QgsWps", "Selected"),
            self.dlgProcessScrollAreaWidget,
            self.dlgProcessScrollAreaWidgetLayout)

##############################################################################

    def generateProcessOutputsGUI(self):
        """Generate the GUI for all complex ouputs defined in the process description XML file"""

        if len(self.process.outputs) < 1:
            return

        groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
        groupbox.setTitle("Complex output(s)")
        layout = QVBoxLayout()

        for output in self.process.outputs:
            outputType = type(output)
            outputIdentifier = output.identifier
            title = output.title
            if outputType == VectorOutput or outputType == RasterOutput:
                complexOutputFormat = output.dataFormat
                # Store the input formats
                self.outputDataTypeList[outputIdentifier] = complexOutputFormat

                widget, comboBox = self.tools.addComplexOutputComboBox(
                    groupbox, outputIdentifier, title,
                    str(complexOutputFormat), self.processIdentifier)
                self.complexOutputComboBoxList.append(comboBox)
                layout.addWidget(widget)

        # Set the layout
        groupbox.setLayout(layout)
        # Add the outputs
        self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

##############################################################################

    def addIntroduction(self, name, title):

        groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
        groupbox.setTitle(name)
        layout = QVBoxLayout()

        myLabel = QLabel(groupbox)
        myLabel.setObjectName("qLabel" + name)
        myLabel.setText(pystring(title))
        myLabel.setMinimumWidth(600)
        myLabel.setMinimumHeight(25)
        myLabel.setWordWrap(True)

        layout.addWidget(myLabel)

        groupbox.setLayout(layout)

        self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

##############################################################################

##############################################################################

    def defineProcess(self):
        """Create the execute request"""
        self.dlgProcess.close()
        self.dlg.close()
        doc = QtXml.QDomDocument()
        doc.setContent(self.process.processXML)

        QApplication.setOverrideCursor(Qt.WaitCursor)

        checkBoxes = self.dlgProcess.findChildren(QCheckBox)
        if len(checkBoxes) > 0:
            useSelected = checkBoxes[0].isChecked()

        request = ExecutionRequest(self.process)
        request.addExecuteRequestHeader()

        request.addDataInputsStart()
        if len(self.process.inputs) > 0:
            # text/plain inputs ########################################################
            for textBox in self.complexInputTextBoxList:
                # Do not add undefined inputs
                if textBox == None or str(
                        textBox.document().toPlainText()) == "":
                    continue

                # TODO: Check for more types (e.g. KML, Shapefile, JSON)
                self.mimeType = self.inputDataTypeList[
                    textBox.objectName()]["MimeType"]

                if isMimeTypePlaylist(self.mimeType) != None:
                    schema = self.inputDataTypeList[
                        textBox.objectName()]["Schema"]
                    encoding = self.inputDataTypeList[
                        textBox.objectName()]["Encoding"]

                    # Handle 'as reference' playlist
                    request.addReferenceInput(textBox.objectName(),
                                              self.mimeType, schema, encoding,
                                              textBox.document().toPlainText())

                else:  # It's not a playlist
                    request.addPlainTextInput(textBox.objectName(),
                                              textBox.document().toPlainText())

            # Single raster and vector inputs ##########################################
            for comboBox in self.complexInputComboBoxList:
                # Do not add undefined inputs

                if comboBox == None or comboBox.currentText() == "<None>":
                    continue

                # TODO: Check for more types (e.g. KML, Shapefile, JSON)
#              QMessageBox.information(None, '',  str(self.inputDataTypeList[comboBox.objectName()]["MimeType"]))
#              QMessageBox.information(None, '',  pystring(comboBox.objectName()))

                self.mimeType = self.inputDataTypeList[pystring(
                    comboBox.objectName())]["MimeType"]
                schema = self.inputDataTypeList[pystring(
                    comboBox.objectName())]["Schema"]
                encoding = self.inputDataTypeList[pystring(
                    comboBox.objectName())]["Encoding"]
                self.myLayer = self.tools.getVLayer(comboBox.currentText())

                #              try:
                if isMimeTypeVector(
                        self.mimeType) != None and encoding != "base64":
                    gmldata = createTmpGML(
                        self.tools.getVLayer(comboBox.currentText()),
                        useSelected,
                        self.process.getSupportedGMLVersion(
                            comboBox.objectName()))
                    request.addGeometryInput(comboBox.objectName(),
                                             self.mimeType, schema, encoding,
                                             gmldata, useSelected)
                elif isMimeTypeVector(
                        self.mimeType) != None or isMimeTypeRaster(
                            self.mimeType) != None:
                    request.addGeometryBase64Input(
                        comboBox.objectName(), self.mimeType,
                        self.tools.getVLayer(comboBox.currentText()))
#              except:
#                  QApplication.restoreOverrideCursor()
#                  QMessageBox.warning(self.iface.mainWindow(),
#                      QApplication.translate("QgsWps","Error"),
#                      QApplication.translate("QgsWps","Please load or select a vector layer!"))
#                  return

# Multiple raster and vector inputs ########################################
            for listWidgets in self.complexInputListWidgetList:
                # Do not add undefined inputs
                if listWidgets == None:
                    continue

                self.mimeType = self.inputDataTypeList[
                    listWidgets.objectName()]["MimeType"]
                schema = self.inputDataTypeList[
                    listWidgets.objectName()]["Schema"]
                encoding = self.inputDataTypeList[
                    listWidgets.objectName()]["Encoding"]

                # Iterate over each seletced item
                for i in range(listWidgets.count()):
                    listWidget = listWidgets.item(i)
                    if listWidget == None or listWidget.isSelected(
                    ) == False or str(listWidget.text()) == "<None>":
                        continue

                    # TODO: Check for more types
                    if isMimeTypeVector(
                            self.mimeType
                    ) != None and self.mimeType == "text/xml":
                        gmldata = createTmpGML(
                            self.tools.getVLayer(listWidget.text()),
                            useSelected,
                            self.process.getSupportedGMLVersion(
                                listWidgets.objectName()))
                        request.addMultipleGeometryInput(
                            listWidgets.objectName(), self.mimeType, schema,
                            encoding, gmldata, useSelected)
                    elif isMimeTypeVector(
                            self.mimeType) != None or isMimeTypeRaster(
                                self.mimeType) != None:
                        request.addMultipleGeometryBase64Input(
                            listWidgets.objectName(), self.mimeType,
                            self.tools.getVLayer(listWidget.text()))

            # Literal data as combo box choice #########################################
            for comboBox in self.literalInputComboBoxList:
                if comboBox == None or comboBox.currentText() == "":
                    continue

                request.addLiteralDataInput(comboBox.objectName(),
                                            comboBox.currentText())

        # Literal data as combo box choice #########################################
            for lineEdit in self.literalInputLineEditList:
                if lineEdit == None or lineEdit.text() == "":
                    continue

                request.addLiteralDataInput(lineEdit.objectName(),
                                            lineEdit.text())

        # BBOX data as lineEdit #########################################
            for bbox in self.bboxInputLineEditList:
                if bbox == None or bbox.text() == "":
                    continue

                bboxArray = bbox.text().split(',')

                request.addBoundingBoxInput(bbox.objectName(), bboxArray)

        request.addDataInputsEnd()

        # Attach only defined outputs
        dataOutputs = doc.elementsByTagName("Output")
        if dataOutputs.size() > 0 or len(self.complexOutputComboBoxList) > 0:
            request.addResponseFormStart()

            # Attach ALL literal outputs #############################################
            for i in range(dataOutputs.size()):
                f_element = dataOutputs.at(i).toElement()
                outputIdentifier = pystring(
                    f_element.elementsByTagName("ows:Identifier").at(
                        0).toElement().text()).strip()
                literalOutputType = f_element.elementsByTagName(
                    "LiteralOutput")

                # Complex data is always requested as reference
                if literalOutputType.size() != 0:
                    request.addLiteralDataOutput(outputIdentifier)

            # Attach selected complex outputs ########################################
            for comboBox in self.complexOutputComboBoxList:
                # Do not add undefined outputs
                if comboBox == None or str(comboBox.currentText()) == "<None>":
                    continue
                outputIdentifier = comboBox.objectName()

                self.mimeType = self.outputDataTypeList[pystring(
                    outputIdentifier)]["MimeType"]
                schema = self.outputDataTypeList[pystring(
                    outputIdentifier)]["Schema"]
                encoding = self.outputDataTypeList[pystring(
                    outputIdentifier)]["Encoding"]

                request.addReferenceOutput(outputIdentifier, self.mimeType,
                                           schema, encoding)

            request.addResponseFormEnd()

        request.addExecuteRequestEnd()
        postString = request.request

        # This is for debug purpose only
        if DEBUG == True:
            #            self.tools.popUpMessageBox("Execute request", postString)
            # Write the request into a file
            outFile = open('/tmp/qwps_execute_request.xml', 'w')
            outFile.write(postString)
            outFile.close()

        QApplication.restoreOverrideCursor()
        self.setStatus("processing")
        self.wps = ExecutionResult(self.getLiteralResult, self.getResultFile,
                                   self.successResult, self.errorResult,
                                   self.streamingHandler, self.progressBar)
        self.wps.executeProcess(self.process.processUrl, postString)
        if len(self.process.inputs) > 0:
            self.wps.thePostReply.uploadProgress.connect(
                lambda done, total: self.setStatus("upload", done, total))
        self.wps.fetchingResult.connect(self.fetchingResult)

##############################################################################

    def addOkCancelButtons(self, dlgProcess, dlgProcessTabFrameLayout):

        groupBox = QFrame()
        layout = QHBoxLayout()

        btnOk = QPushButton(groupBox)
        btnOk.setText(pystring(QApplication.translate("QgsWps", "Run")))
        btnOk.setMinimumWidth(100)
        btnOk.setMaximumWidth(100)

        btnCancel = QPushButton(groupBox)
        btnCancel.setText(QApplication.translate("QgsWps", "Back"))
        btnCancel.setMinimumWidth(100)
        btnCancel.setMaximumWidth(100)

        btnBookmark = QPushButton(groupBox)
        btnBookmark.setText(QApplication.translate("QgsWps", "Add Bookmark"))
        btnBookmark.setMinimumWidth(200)
        btnBookmark.setMaximumWidth(200)

        layout.addWidget(btnBookmark)
        layout.addStretch(10)
        layout.addWidget(btnCancel)
        layout.addWidget(btnOk)

        groupBox.setLayout(layout)
        dlgProcessTabFrameLayout.addWidget(groupBox)

        btnOk.clicked.connect(self.defineProcess)
        btnCancel.clicked.connect(self.dlgProcess.close)
        btnBookmark.clicked.connect(self.saveBookmark)

    def saveBookmark(self):
        server = WpsServer.getServer(self.dlgProcess.currentServiceName())
        process = ProcessDescription(
            server, self.processUrl.queryItemValue('identifier'))
        process.saveBookmark()
        self.bookmarksChanged.emit()
        QMessageBox.information(
            self.iface.mainWindow(),
            QCoreApplication.translate("QgsWps", "Bookmark"),
            QCoreApplication.translate(
                "QgsWps", "The creation bookmark was successful."))

    def fetchingResult(self, noFilesToFetch):
        QApplication.restoreOverrideCursor()
        self.setStatus('finished')

##############################################################################

    def streamingHandler(self, encoding, playlistUrl):
        """ Handle response form streaming based processes """
        mimeTypePlaylist, self.mimeType = self.mimeType.split("+")
        print playlistUrl

        # Get number of chunks (Only for Output streaming based WPSs)
        chunks = 0
        if isMimeTypeVector(self.mimeType) != None:
            for lineEdit in self.literalInputLineEditList:
                if lineEdit.objectName() == "NumberOfChunks":
                    chunks = int(lineEdit.text())
        elif isMimeTypeRaster(self.mimeType) != None:
            chunks = 1
            for lineEdit in self.literalInputLineEditList:
                if lineEdit.objectName(
                ) == "chunksByRow" or lineEdit.objectName(
                ) == "chunksByColumn":
                    chunks = chunks * int(lineEdit.text())

        print "No. of chunks:", chunks

        # Streaming handler
        self.dataStream = Streaming(self, self.iface, chunks, playlistUrl,
                                    self.mimeType, encoding)
        self.dataStream.start()

    def stopStreaming(self):
        """ SLOT Stop the timer """
        if self.dataStream:
            self.dataStream.stop()

##############################################################################

    def loadData(self, resultFile):
        bLoaded = True  # For information purposes

        layerName = self.tools.uniqueLayerName(self.processIdentifier + "_" +
                                               self.identifier)
        # The layername is normally defined in the comboBox
        for comboBox in self.complexOutputComboBoxList:
            if comboBox.objectName() == self.identifier:
                layerName = comboBox.currentText()

        # Vector data
        # TODO: Check for schema GML and KML
        if isMimeTypeVector(self.mimeType) != None:
            vlayer = QgsVectorLayer(resultFile, layerName, "ogr")
            try:
                vlayer.setCrs(self.myLayer.dataProvider().crs())
            except:
                pass
            bLoaded = QgsMapLayerRegistry.instance().addMapLayer(vlayer)

    # Raster data
        elif isMimeTypeRaster(self.mimeType) != None:
            # We can directly attach the new layer
            rLayer = QgsRasterLayer(resultFile, layerName)
            bLoaded = QgsMapLayerRegistry.instance().addMapLayer(rLayer)

        # Text data
        elif isMimeTypeText(self.mimeType) != None:
            #TODO: this should be handled in a separate diaqgswps.pylog to save the text output as file'
            QApplication.restoreOverrideCursor()
            text = open(resultFile, 'r').read()
            # TODO: This should be a text dialog with safe option
            self.tools.popUpMessageBox(
                QCoreApplication.translate("QgsWps",
                                           'Process result (text/plain)'),
                text)

        # Everything else
        elif isMimeTypeFile(self.mimeType) != None:
            #TODO: this should be handled in a separate diaqgswps.pylog to save the text output as file'
            QApplication.restoreOverrideCursor()
            text = open(resultFile, 'r').read()
            # TODO: This should be a text dialog with safe option
            fileName = QFileDialog().getSaveFileName()

        # Everything else
        else:
            # For unsupported mime types we assume text
            QApplication.restoreOverrideCursor()
            content = open(resultFile, 'r').read()
            # TODO: This should have a safe option
            self.tools.popUpMessageBox(
                QCoreApplication.translate(
                    "QgsWps", 'Process result (unsupported mime type)'),
                content)

        if not bLoaded:
            QMessageBox.information(
                self.iface.mainWindow(),
                QApplication.translate("QgsWps",
                                       "Result not loaded to the map"),
                QApplication.translate(
                    "QgsWps",
                    "It seems QGIS cannot load the result of the process. The result has a '{0}' type and can be accessed at '{1}'. \n\nYou could ask the service provider to consider changing the default data type of the result."
                ).format(self.mimeType, resultFile))

    def getLiteralResult(self, identifier, literalText):
        self.tools.popUpMessageBox(
            QCoreApplication.translate("QgsWps", 'Result'), literalText)
        self.setStatus('finished')

    def getResultFile(self, identifier, mimeType, encoding, schema, reply):
        # Get a unique temporary file name
        myQTempFile = QTemporaryFile()
        myQTempFile.open()
        ext = getFileExtension(self.mimeType)
        tmpFile = myQTempFile.fileName() + ext
        myQTempFile.close()

        # Write the data to the temporary file
        outFile = QFile(tmpFile)
        outFile.open(QIODevice.WriteOnly)
        outFile.write(reply.readAll())
        reply.deleteLater()
        outFile.close()

        resultFile = self.wps.handleEncoded(tmpFile, mimeType, encoding,
                                            schema)

        # Finally, load the data
        self.loadData(resultFile)
        self.setStatus('finished')

##############################################################################

    def errorResult(self, exceptionHtml):
        self.setStatus('error')
        QMessageBox.critical(self.iface.mainWindow(), "Exception report",
                             exceptionHtml)

    def successResult(self):
        self.setStatus('finished')

##############################################################################

    def deleteServer(self, name):
        settings = QSettings()
        settings.beginGroup("WPS")
        baseUrl = pystring(settings.value(name + "/url"))
        settings.remove(name)
        settings.endGroup()
        # delete related cookies
        url = QUrl()
        url.setUrl(baseUrl)
        serverCookie = WpsServerCookie(url)
        serverCookie.removeServerCookies()
        self.dlg.initQgsWpsGui()

##############################################################################

    def editServer(self, name):
        server = WpsServer.getServer(name)
        flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
        dlgEdit = QgsNewHttpConnectionBaseGui(self.dlg, flags)
        dlgEdit.txtName.setText(name)
        dlgEdit.txtUrl.setText(server.baseUrl)
        dlgEdit.show()
        self.dlg.initQgsWpsGui()

##############################################################################

    def newServer(self):
        flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
        dlgNew = QgsNewHttpConnectionBaseGui(self.dlg, flags)
        dlgNew.show()
        self.dlg.initQgsWpsGui()

    def pushDefaultServer(self):
        settings = QSettings()
        for k, v in self.defaultServers.iteritems():
            myURL = urlparse(str(v))
            mySettings = "/WPS/" + k
            #    settings.setValue("WPS/connections/selected", QVariant(name) )
            settings.setValue(mySettings + "/scheme", pystring(myURL.scheme))
            settings.setValue(mySettings + "/server", pystring(myURL.netloc))
            settings.setValue(mySettings + "/path", pystring(myURL.path))
            settings.setValue(mySettings + "/method", pystring("GET"))
            settings.setValue(mySettings + "/version", pystring("1.0.0"))
            settings.setValue(mySettings + "/url", pystring(v))
            self.dlg.initQgsWpsGui()

    @pyqtSignature("")
    def on_btnKill_clicked(self):
        self.wps.thePostReply.abort()
        self.wps.thePostReply.deleteLater()
        self.setStatus('aborted')
        self.killed.emit()
        pass
コード例 #2
0
    def createProcessGUI(self):
        """Create the GUI for a selected WPS process based on the DescribeProcess
           response document. Mandatory inputs are marked as red, default is black"""

        # Lists which store the inputs and meta information (format, occurs, ...)
        # This list is initialized every time the GUI is created
        self.complexInputComboBoxList = [
        ]  # complex input for single raster and vector maps
        self.complexInputListWidgetList = [
        ]  # complex input for multiple raster and vector maps
        self.complexInputTextBoxList = []  # complex inpt of type text/plain
        self.literalInputComboBoxList = [
        ]  # literal value list with selectable answers
        self.literalInputLineEditList = [
        ]  # literal value list with single text line input
        self.bboxInputLineEditList = [
        ]  # bbox value list with single text line input
        self.complexOutputComboBoxList = []  # list combo box
        self.inputDataTypeList = {}
        self.outputDataTypeList = {}

        flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags

        self.processUrl = self.process.processUrl
        self.processIdentifier = self.process.processIdentifier
        self.processName = self.process.processName

        # Create the layouts and the scroll area
        self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
        self.dlgProcessLayout = QGridLayout()
        # Two tabs, one for the process inputs and one for the documentation
        # TODO: add a tab for literal outputs
        self.dlgProcessTab = QTabWidget()
        self.dlgProcessTabFrame = QFrame()
        self.dlgProcessTabFrameLayout = QGridLayout()
        # The process description can be very long, so we make it scrollable
        self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

        self.dlgProcessScrollAreaWidget = QFrame()
        self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

        # First part of the gui is a short overview about the process
        self.identifier = self.process.identifier
        title = self.process.title
        abstract = self.process.abstract
        self.addIntroduction(self.identifier, title)

        # If no Input Data  are requested
        if len(self.process.inputs) == 0:
            self.defineProcess()
            return 0

        # Generate the input GUI buttons and widgets

        res = self.generateProcessInputsGUI()
        if res == 0:
            return 0

        # Generate the editable outpt widgets, you can set the output to none if it is not requested
        self.generateProcessOutputsGUI()

        self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
        self.dlgProcessScrollAreaWidget.setLayout(
            self.dlgProcessScrollAreaWidgetLayout)
        self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
        self.dlgProcessScrollArea.setWidgetResizable(True)

        self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

        self.addOkCancelButtons(self.dlgProcess, self.dlgProcessTabFrameLayout)

        self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
        self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

        self.tools.addDocumentationTab(self.dlgProcessTab, abstract)

        self.dlgProcessLayout.addWidget(self.dlgProcessTab)
        self.dlgProcess.setLayout(self.dlgProcessLayout)
        self.dlgProcess.setGeometry(QRect(190, 100, 800, 600))
        self.dlgProcess.show()
コード例 #3
0
class QgsWpsDockWidget(QDockWidget, Ui_QgsWpsDockWidget):
    """
    Class documentation goes here.
    """

    killed = pyqtSignal()
    bookmarksChanged = pyqtSignal()

    def __init__(self, iface):
        """
        Constructor
        """
        QDockWidget.__init__(self, iface.mainWindow())
        self.setupUi(self)
        self.iface = iface
        self.tools = QgsWpsTools(self.iface)
        self.dataStream = None  # Used for streaming
        self.setWindowTitle("QgsWPSClient-Plugin " + version())

        self.defaultServers = {
            "Kappasys WPS": "http://www.kappasys.ch/pywps/pywps.cgi",
            "geodati.fmach.it": "http://geodati.fmach.it/zoo/",
            "zoo project": "http://zoo-project.org/wps-foss4g2011/zoo_loader.cgi",
            "zoo project grass": "http://zoo-project.org/cgi-grass/zoo_loader.cgi",
            "52 North": "http://geoprocessing.demo.52north.org:8080/wps/WebProcessingService",
        }

        flags = (
            Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint
        )  # QgisGui.ModalDialogFlags
        self.dlg = QgsWpsGui(self.iface.mainWindow(), flags)
        self.dlg.getDescription.connect(self.getDescription)
        self.dlg.newServer.connect(self.newServer)
        self.dlg.editServer.connect(self.editServer)
        self.dlg.deleteServer.connect(self.deleteServer)
        self.dlg.pushDefaultServer.clicked.connect(self.pushDefaultServer)
        self.dlg.requestDescribeProcess.connect(self.requestDescribeProcess)
        #        self.dlg.bookmarksChanged.connect()"), self, SIGNAL("bookmarksChanged()"))

        self.killed.connect(self.stopStreaming)

    def getDescription(self, name, item):
        self.requestDescribeProcess(name, item.text(0))

    def requestDescribeProcess(self, serverName, processIdentifier):
        server = WpsServer.getServer(serverName)
        self.process = ProcessDescription(server, processIdentifier)
        self.process.describeProcessFinished.connect(self.createProcessGUI)
        self.process.requestDescribeProcess()

    def setStatus(self, status, done=0, total=0):
        complete = status == "aborted" or status == "finished" or status == "error"

        self.progressBar.setRange(done, total)
        if status == "upload" and done == total:
            status = "processing"
            done = total = 0

        self.btnConnect.setEnabled(complete)
        self.btnKill.setEnabled(not complete)
        if complete:
            self.progressBar.setRange(0, 100)
            self.progressBar.setValue(100)
        else:
            self.progressBar.setRange(0, total)
            self.progressBar.setValue(done)

        if status == "upload":
            text = QApplication.translate("QgsWps", " upload data ...")
        elif status == "processing":
            text = QApplication.translate("QgsWps", " is running ...")
        elif status == "download":
            text = QApplication.translate("QgsWps", " download data ...")
        elif status == "finished":
            text = QApplication.translate("QgsWps", " finished successfully")
        elif status == "error":
            text = QApplication.translate("QgsWps", " terminated with errors!")
        elif status == "aborted":
            text = QApplication.translate("QgsWps", " was aborted!")

        self.statusLabel.setText(pystring(self.processIdentifier + text))

    @pyqtSignature("")
    def on_btnConnect_clicked(self):
        self.dlg.initQgsWpsGui()
        self.statusLabel.setText("")
        self.progressBar.setRange(0, 100)
        self.progressBar.setValue(0)
        self.dlg.show()

    def createProcessGUI(self):
        """Create the GUI for a selected WPS process based on the DescribeProcess
           response document. Mandatory inputs are marked as red, default is black"""

        # Lists which store the inputs and meta information (format, occurs, ...)
        # This list is initialized every time the GUI is created
        self.complexInputComboBoxList = []  # complex input for single raster and vector maps
        self.complexInputListWidgetList = []  # complex input for multiple raster and vector maps
        self.complexInputTextBoxList = []  # complex inpt of type text/plain
        self.literalInputComboBoxList = []  # literal value list with selectable answers
        self.literalInputLineEditList = []  # literal value list with single text line input
        self.bboxInputLineEditList = []  # bbox value list with single text line input
        self.complexOutputComboBoxList = []  # list combo box
        self.inputDataTypeList = {}
        self.outputDataTypeList = {}

        flags = (
            Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint
        )  # QgisGui.ModalDialogFlags

        self.processUrl = self.process.processUrl
        self.processIdentifier = self.process.processIdentifier
        self.processName = self.process.processName

        # Create the layouts and the scroll area
        self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
        self.dlgProcessLayout = QGridLayout()
        # Two tabs, one for the process inputs and one for the documentation
        # TODO: add a tab for literal outputs
        self.dlgProcessTab = QTabWidget()
        self.dlgProcessTabFrame = QFrame()
        self.dlgProcessTabFrameLayout = QGridLayout()
        # The process description can be very long, so we make it scrollable
        self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

        self.dlgProcessScrollAreaWidget = QFrame()
        self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

        # First part of the gui is a short overview about the process
        self.identifier = self.process.identifier
        title = self.process.title
        abstract = self.process.abstract
        self.addIntroduction(self.identifier, title)

        # If no Input Data  are requested
        if len(self.process.inputs) == 0:
            self.defineProcess()
            return 0

        # Generate the input GUI buttons and widgets

        res = self.generateProcessInputsGUI()
        if res == 0:
            return 0

        # Generate the editable outpt widgets, you can set the output to none if it is not requested
        self.generateProcessOutputsGUI()

        self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
        self.dlgProcessScrollAreaWidget.setLayout(self.dlgProcessScrollAreaWidgetLayout)
        self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
        self.dlgProcessScrollArea.setWidgetResizable(True)

        self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

        self.addOkCancelButtons(self.dlgProcess, self.dlgProcessTabFrameLayout)

        self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
        self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

        self.tools.addDocumentationTab(self.dlgProcessTab, abstract)

        self.dlgProcessLayout.addWidget(self.dlgProcessTab)
        self.dlgProcess.setLayout(self.dlgProcessLayout)
        self.dlgProcess.setGeometry(QRect(190, 100, 800, 600))
        self.dlgProcess.show()

    def generateProcessInputsGUI(self):
        """Generate the GUI for all Inputs defined in the process description XML file"""
        for input in self.process.inputs:
            inputType = type(input)
            inputIdentifier = input.identifier
            title = input.title
            minOccurs = input.minOccurs
            if inputType == VectorInput or inputType == MultipleVectorInput:
                complexDataFormat = input.dataFormat
                self.inputDataTypeList[inputIdentifier] = complexDataFormat
                layerNamesList = self.tools.getLayerNameList(0)
                if inputType == VectorInput:
                    self.complexInputComboBoxList.append(
                        self.tools.addComplexInputComboBox(
                            title,
                            inputIdentifier,
                            str(complexDataFormat),
                            layerNamesList,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                        )
                    )
                else:
                    self.complexInputListWidgetList.append(
                        self.tools.addComplexInputListWidget(
                            title,
                            inputIdentifier,
                            str(complexDataFormat),
                            layerNamesList,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                        )
                    )
            elif inputType == StringInput:
                dValue = input.defaultValue
                self.literalInputLineEditList.append(
                    self.tools.addLiteralLineEdit(
                        title,
                        inputIdentifier,
                        minOccurs,
                        self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout,
                        dValue,
                    )
                )
            elif inputType == TextInput:
                complexDataFormat = input.dataFormat
                if isMimeTypePlaylist(complexDataFormat["MimeType"]) != None:
                    self.inputDataTypeList[inputIdentifier] = complexDataFormat
                    # Playlist (text) inputs
                    self.complexInputTextBoxList.append(
                        self.tools.addComplexInputTextBox(
                            title,
                            inputIdentifier,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                            str(complexDataFormat),
                        )
                    )
                else:
                    self.complexInputTextBoxList.append(
                        self.tools.addComplexInputTextBox(
                            title,
                            inputIdentifier,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                        )
                    )
            elif inputType == RasterInput or inputType == MultipleRasterInput:
                complexDataFormat = input.dataFormat
                self.inputDataTypeList[inputIdentifier] = complexDataFormat
                layerNamesList = self.tools.getLayerNameList(1)
                if inputType == RasterInput:
                    self.complexInputComboBoxList.append(
                        self.tools.addComplexInputComboBox(
                            title,
                            inputIdentifier,
                            str(complexDataFormat),
                            layerNamesList,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                        )
                    )
                else:
                    self.complexInputListWidgetList.append(
                        self.tools.addComplexInputListWidget(
                            title,
                            inputIdentifier,
                            str(complexDataFormat),
                            layerNamesList,
                            minOccurs,
                            self.dlgProcessScrollAreaWidget,
                            self.dlgProcessScrollAreaWidgetLayout,
                        )
                    )
            elif inputType == SelectionInput:
                valList = input.valList
                self.literalInputComboBoxList.append(
                    self.tools.addLiteralComboBox(
                        title,
                        inputIdentifier,
                        valList,
                        minOccurs,
                        self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout,
                    )
                )
            elif inputType == ExtentInput:
                myExtent = pystring(self.iface.mapCanvas().extent()).replace(":", ",")
                self.bboxInputLineEditList.append(
                    self.tools.addLiteralLineEdit(
                        title + "(minx,miny,maxx,maxy)",
                        inputIdentifier,
                        minOccurs,
                        self.dlgProcessScrollAreaWidget,
                        self.dlgProcessScrollAreaWidgetLayout,
                        myExtent,
                    )
                )
            elif inputType == CrsInput:
                crsListe = input.crsList
        #                self.literalInputComboBoxList.append(self.tools.addLiteralComboBox("Supported CRS", inputIdentifier, crsListe, minOccurs,  self.dlgProcessScrollAreaWidget,  self.dlgProcessScrollAreaWidgetLayout))

        self.tools.addCheckBox(
            QCoreApplication.translate("QgsWps", "Process selected objects only"),
            QCoreApplication.translate("QgsWps", "Selected"),
            self.dlgProcessScrollAreaWidget,
            self.dlgProcessScrollAreaWidgetLayout,
        )

    ##############################################################################

    def generateProcessOutputsGUI(self):
        """Generate the GUI for all complex ouputs defined in the process description XML file"""

        if len(self.process.outputs) < 1:
            return

        groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
        groupbox.setTitle("Complex output(s)")
        layout = QVBoxLayout()

        for output in self.process.outputs:
            outputType = type(output)
            outputIdentifier = output.identifier
            title = output.title
            if outputType == VectorOutput or outputType == RasterOutput:
                complexOutputFormat = output.dataFormat
                # Store the input formats
                self.outputDataTypeList[outputIdentifier] = complexOutputFormat

                widget, comboBox = self.tools.addComplexOutputComboBox(
                    groupbox, outputIdentifier, title, str(complexOutputFormat), self.processIdentifier
                )
                self.complexOutputComboBoxList.append(comboBox)
                layout.addWidget(widget)

        # Set the layout
        groupbox.setLayout(layout)
        # Add the outputs
        self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

    ##############################################################################

    def addIntroduction(self, name, title):

        groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
        groupbox.setTitle(name)
        layout = QVBoxLayout()

        myLabel = QLabel(groupbox)
        myLabel.setObjectName("qLabel" + name)
        myLabel.setText(pystring(title))
        myLabel.setMinimumWidth(600)
        myLabel.setMinimumHeight(25)
        myLabel.setWordWrap(True)

        layout.addWidget(myLabel)

        groupbox.setLayout(layout)

        self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

    ##############################################################################

    ##############################################################################
    def defineProcess(self):
        """Create the execute request"""
        self.dlgProcess.close()
        self.dlg.close()
        doc = QtXml.QDomDocument()
        doc.setContent(self.process.processXML)

        QApplication.setOverrideCursor(Qt.WaitCursor)

        checkBoxes = self.dlgProcess.findChildren(QCheckBox)
        if len(checkBoxes) > 0:
            useSelected = checkBoxes[0].isChecked()

        request = ExecutionRequest(self.process)
        request.addExecuteRequestHeader()

        request.addDataInputsStart()
        if len(self.process.inputs) > 0:
            # text/plain inputs ########################################################
            for textBox in self.complexInputTextBoxList:
                # Do not add undefined inputs
                if textBox == None or str(textBox.document().toPlainText()) == "":
                    continue

                # TODO: Check for more types (e.g. KML, Shapefile, JSON)
                self.mimeType = self.inputDataTypeList[textBox.objectName()]["MimeType"]

                if isMimeTypePlaylist(self.mimeType) != None:
                    schema = self.inputDataTypeList[textBox.objectName()]["Schema"]
                    encoding = self.inputDataTypeList[textBox.objectName()]["Encoding"]

                    # Handle 'as reference' playlist
                    request.addReferenceInput(
                        textBox.objectName(), self.mimeType, schema, encoding, textBox.document().toPlainText()
                    )

                else:  # It's not a playlist
                    request.addPlainTextInput(textBox.objectName(), textBox.document().toPlainText())

            # Single raster and vector inputs ##########################################
            for comboBox in self.complexInputComboBoxList:
                # Do not add undefined inputs

                if comboBox == None or comboBox.currentText() == "<None>":
                    continue

                # TODO: Check for more types (e.g. KML, Shapefile, JSON)
                #              QMessageBox.information(None, '',  str(self.inputDataTypeList[comboBox.objectName()]["MimeType"]))
                #              QMessageBox.information(None, '',  pystring(comboBox.objectName()))

                self.mimeType = self.inputDataTypeList[pystring(comboBox.objectName())]["MimeType"]
                schema = self.inputDataTypeList[pystring(comboBox.objectName())]["Schema"]
                encoding = self.inputDataTypeList[pystring(comboBox.objectName())]["Encoding"]
                self.myLayer = self.tools.getVLayer(comboBox.currentText())

                #              try:
                if isMimeTypeVector(self.mimeType) != None and encoding != "base64":
                    gmldata = createTmpGML(
                        self.tools.getVLayer(comboBox.currentText()),
                        useSelected,
                        self.process.getSupportedGMLVersion(comboBox.objectName()),
                    )
                    request.addGeometryInput(
                        comboBox.objectName(), self.mimeType, schema, encoding, gmldata, useSelected
                    )
                elif isMimeTypeVector(self.mimeType) != None or isMimeTypeRaster(self.mimeType) != None:
                    request.addGeometryBase64Input(
                        comboBox.objectName(), self.mimeType, self.tools.getVLayer(comboBox.currentText())
                    )
            #              except:
            #                  QApplication.restoreOverrideCursor()
            #                  QMessageBox.warning(self.iface.mainWindow(),
            #                      QApplication.translate("QgsWps","Error"),
            #                      QApplication.translate("QgsWps","Please load or select a vector layer!"))
            #                  return

            # Multiple raster and vector inputs ########################################
            for listWidgets in self.complexInputListWidgetList:
                # Do not add undefined inputs
                if listWidgets == None:
                    continue

                self.mimeType = self.inputDataTypeList[listWidgets.objectName()]["MimeType"]
                schema = self.inputDataTypeList[listWidgets.objectName()]["Schema"]
                encoding = self.inputDataTypeList[listWidgets.objectName()]["Encoding"]

                # Iterate over each seletced item
                for i in range(listWidgets.count()):
                    listWidget = listWidgets.item(i)
                    if listWidget == None or listWidget.isSelected() == False or str(listWidget.text()) == "<None>":
                        continue

                    # TODO: Check for more types
                    if isMimeTypeVector(self.mimeType) != None and self.mimeType == "text/xml":
                        gmldata = createTmpGML(
                            self.tools.getVLayer(listWidget.text()),
                            useSelected,
                            self.process.getSupportedGMLVersion(listWidgets.objectName()),
                        )
                        request.addMultipleGeometryInput(
                            listWidgets.objectName(), self.mimeType, schema, encoding, gmldata, useSelected
                        )
                    elif isMimeTypeVector(self.mimeType) != None or isMimeTypeRaster(self.mimeType) != None:
                        request.addMultipleGeometryBase64Input(
                            listWidgets.objectName(), self.mimeType, self.tools.getVLayer(listWidget.text())
                        )

            # Literal data as combo box choice #########################################
            for comboBox in self.literalInputComboBoxList:
                if comboBox == None or comboBox.currentText() == "":
                    continue

                request.addLiteralDataInput(comboBox.objectName(), comboBox.currentText())

            # Literal data as combo box choice #########################################
            for lineEdit in self.literalInputLineEditList:
                if lineEdit == None or lineEdit.text() == "":
                    continue

                request.addLiteralDataInput(lineEdit.objectName(), lineEdit.text())

            # BBOX data as lineEdit #########################################
            for bbox in self.bboxInputLineEditList:
                if bbox == None or bbox.text() == "":
                    continue

                bboxArray = bbox.text().split(",")

                request.addBoundingBoxInput(bbox.objectName(), bboxArray)

        request.addDataInputsEnd()

        # Attach only defined outputs
        dataOutputs = doc.elementsByTagName("Output")
        if dataOutputs.size() > 0 or len(self.complexOutputComboBoxList) > 0:
            request.addResponseFormStart()

            # Attach ALL literal outputs #############################################
            for i in range(dataOutputs.size()):
                f_element = dataOutputs.at(i).toElement()
                outputIdentifier = pystring(
                    f_element.elementsByTagName("ows:Identifier").at(0).toElement().text()
                ).strip()
                literalOutputType = f_element.elementsByTagName("LiteralOutput")

                # Complex data is always requested as reference
                if literalOutputType.size() != 0:
                    request.addLiteralDataOutput(outputIdentifier)

            # Attach selected complex outputs ########################################
            for comboBox in self.complexOutputComboBoxList:
                # Do not add undefined outputs
                if comboBox == None or str(comboBox.currentText()) == "<None>":
                    continue
                outputIdentifier = comboBox.objectName()

                self.mimeType = self.outputDataTypeList[pystring(outputIdentifier)]["MimeType"]
                schema = self.outputDataTypeList[pystring(outputIdentifier)]["Schema"]
                encoding = self.outputDataTypeList[pystring(outputIdentifier)]["Encoding"]

                request.addReferenceOutput(outputIdentifier, self.mimeType, schema, encoding)

            request.addResponseFormEnd()

        request.addExecuteRequestEnd()
        postString = request.request

        # This is for debug purpose only
        if True:
            #            self.tools.popUpMessageBox("Execute request", postString)
            # Write the request into a file
            outFile = open("/tmp/qwps_execute_request.xml", "w")
            outFile.write(postString)
            outFile.close()

        QApplication.restoreOverrideCursor()
        self.setStatus("processing")
        self.wps = ExecutionResult(
            self.getLiteralResult,
            self.getResultFile,
            self.successResult,
            self.errorResult,
            self.streamingHandler,
            self.progressBar,
        )
        self.wps.executeProcess(self.process.processUrl, postString)
        if len(self.process.inputs) > 0:
            self.wps.thePostReply.uploadProgress.connect(lambda done, total: self.setStatus("upload", done, total))
        self.wps.fetchingResult.connect(self.fetchingResult)

    ##############################################################################

    def addOkCancelButtons(self, dlgProcess, dlgProcessTabFrameLayout):

        groupBox = QFrame()
        layout = QHBoxLayout()

        btnOk = QPushButton(groupBox)
        btnOk.setText(pystring(QApplication.translate("QgsWps", "Run")))
        btnOk.setMinimumWidth(100)
        btnOk.setMaximumWidth(100)

        btnCancel = QPushButton(groupBox)
        btnCancel.setText(QApplication.translate("QgsWps", "Back"))
        btnCancel.setMinimumWidth(100)
        btnCancel.setMaximumWidth(100)

        btnBookmark = QPushButton(groupBox)
        btnBookmark.setText(QApplication.translate("QgsWps", "Add Bookmark"))
        btnBookmark.setMinimumWidth(200)
        btnBookmark.setMaximumWidth(200)

        layout.addWidget(btnBookmark)
        layout.addStretch(10)
        layout.addWidget(btnCancel)
        layout.addWidget(btnOk)

        groupBox.setLayout(layout)
        dlgProcessTabFrameLayout.addWidget(groupBox)

        btnOk.clicked.connect(self.defineProcess)
        btnCancel.clicked.connect(self.dlgProcess.close)
        btnBookmark.clicked.connect(self.saveBookmark)

    def saveBookmark(self):
        server = WpsServer.getServer(self.dlgProcess.currentServiceName())
        process = ProcessDescription(server, self.processUrl.queryItemValue("identifier"))
        process.saveBookmark()
        self.bookmarksChanged.emit()
        QMessageBox.information(
            self.iface.mainWindow(),
            QCoreApplication.translate("QgsWps", "Bookmark"),
            QCoreApplication.translate("QgsWps", "The creation bookmark was successful."),
        )

    def fetchingResult(self, noFilesToFetch):
        QApplication.restoreOverrideCursor()
        self.setStatus("finished")

    ##############################################################################

    def streamingHandler(self, encoding, playlistUrl):
        """ Handle response form streaming based processes """
        mimeTypePlaylist, self.mimeType = self.mimeType.split("+")
        print playlistUrl

        # Get number of chunks (Only for Output streaming based WPSs)
        chunks = 0
        if isMimeTypeVector(self.mimeType) != None:
            for lineEdit in self.literalInputLineEditList:
                if lineEdit.objectName() == "NumberOfChunks":
                    chunks = int(lineEdit.text())
        elif isMimeTypeRaster(self.mimeType) != None:
            chunks = 1
            for lineEdit in self.literalInputLineEditList:
                if lineEdit.objectName() == "chunksByRow" or lineEdit.objectName() == "chunksByColumn":
                    chunks = chunks * int(lineEdit.text())

        print "No. of chunks:", chunks

        # Streaming handler
        self.dataStream = Streaming(self, self.iface, chunks, playlistUrl, self.mimeType, encoding)
        self.dataStream.start()

    def stopStreaming(self):
        """ SLOT Stop the timer """
        if self.dataStream:
            self.dataStream.stop()

    ##############################################################################

    def loadData(self, resultFile):
        bLoaded = True  # For information purposes

        layerName = self.tools.uniqueLayerName(self.processIdentifier + "_" + self.identifier)
        # The layername is normally defined in the comboBox
        for comboBox in self.complexOutputComboBoxList:
            if comboBox.objectName() == self.identifier:
                layerName = comboBox.currentText()

        # Vector data
        # TODO: Check for schema GML and KML
        if isMimeTypeVector(self.mimeType) != None:
            vlayer = QgsVectorLayer(resultFile, layerName, "ogr")
            try:
                vlayer.setCrs(self.myLayer.dataProvider().crs())
            except:
                pass
            bLoaded = QgsMapLayerRegistry.instance().addMapLayer(vlayer)

        # Raster data
        elif isMimeTypeRaster(self.mimeType) != None:
            # We can directly attach the new layer
            rLayer = QgsRasterLayer(resultFile, layerName)
            bLoaded = QgsMapLayerRegistry.instance().addMapLayer(rLayer)

        # Text data
        elif isMimeTypeText(self.mimeType) != None:
            # TODO: this should be handled in a separate diaqgswps.pylog to save the text output as file'
            QApplication.restoreOverrideCursor()
            text = open(resultFile, "r").read()
            # TODO: This should be a text dialog with safe option
            self.tools.popUpMessageBox(QCoreApplication.translate("QgsWps", "Process result (text/plain)"), text)

        # Everything else
        elif isMimeTypeFile(self.mimeType) != None:
            # TODO: this should be handled in a separate diaqgswps.pylog to save the text output as file'
            QApplication.restoreOverrideCursor()
            text = open(resultFile, "r").read()
            # TODO: This should be a text dialog with safe option
            fileName = QFileDialog().getSaveFileName()

        # Everything else
        else:
            # For unsupported mime types we assume text
            QApplication.restoreOverrideCursor()
            content = open(resultFile, "r").read()
            # TODO: This should have a safe option
            self.tools.popUpMessageBox(
                QCoreApplication.translate("QgsWps", "Process result (unsupported mime type)"), content
            )

        if not bLoaded:
            QMessageBox.information(
                self.iface.mainWindow(),
                QApplication.translate("QgsWps", "Result not loaded to the map"),
                QApplication.translate(
                    "QgsWps",
                    "It seems QGIS cannot load the result of the process. The result has a '{0}' type and can be accessed at '{1}'. \n\nYou could ask the service provider to consider changing the default data type of the result.",
                ).format(self.mimeType, resultFile),
            )

    def getLiteralResult(self, identifier, literalText):
        self.tools.popUpMessageBox(QCoreApplication.translate("QgsWps", "Result"), literalText)
        self.setStatus("finished")

    def getResultFile(self, identifier, mimeType, encoding, schema, reply):
        # Get a unique temporary file name
        self.mimeType = mimeType
        myQTempFile = QTemporaryFile()
        myQTempFile.open()
        ext = getFileExtension(self.mimeType)
        tmpFile = myQTempFile.fileName() + ext
        myQTempFile.close()

        # Write the data to the temporary file
        outFile = QFile(tmpFile)
        outFile.open(QIODevice.WriteOnly)
        outFile.write(reply.readAll())
        reply.deleteLater()
        outFile.close()

        resultFile = self.wps.handleEncoded(tmpFile, mimeType, encoding, schema)

        # Finally, load the data
        self.loadData(resultFile)
        self.setStatus("finished")

    ##############################################################################

    def errorResult(self, exceptionHtml):
        self.setStatus("error")
        QMessageBox.critical(self.iface.mainWindow(), "Exception report", exceptionHtml)

    def successResult(self):
        self.setStatus("finished")

    ##############################################################################

    def deleteServer(self, name):
        settings = QSettings()
        settings.beginGroup("WPS")
        settings.remove(name)
        settings.endGroup()
        self.dlg.initQgsWpsGui()

    ##############################################################################

    def editServer(self, name):
        server = WpsServer.getServer(name)
        flags = (
            Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint
        )  # QgisGui.ModalDialogFlags
        dlgEdit = QgsNewHttpConnectionBaseGui(self.dlg, flags)
        dlgEdit.txtName.setText(name)
        dlgEdit.txtUrl.setText(server.baseUrl)
        dlgEdit.show()
        self.dlg.initQgsWpsGui()

    ##############################################################################

    def newServer(self):
        flags = (
            Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint
        )  # QgisGui.ModalDialogFlags
        dlgNew = QgsNewHttpConnectionBaseGui(self.dlg, flags)
        dlgNew.show()
        self.dlg.initQgsWpsGui()

    def pushDefaultServer(self):
        settings = QSettings()
        for k, v in self.defaultServers.iteritems():
            myURL = urlparse(str(v))
            mySettings = "/WPS/" + k
            #    settings.setValue("WPS/connections/selected", QVariant(name) )
            settings.setValue(mySettings + "/scheme", pystring(myURL.scheme))
            settings.setValue(mySettings + "/server", pystring(myURL.netloc))
            settings.setValue(mySettings + "/path", pystring(myURL.path))
            settings.setValue(mySettings + "/method", pystring("GET"))
            settings.setValue(mySettings + "/version", pystring("1.0.0"))
            settings.setValue(mySettings + "/url", pystring(v))
            self.dlg.initQgsWpsGui()

    @pyqtSignature("")
    def on_btnKill_clicked(self):
        self.wps.thePostReply.abort()
        self.wps.thePostReply.deleteLater()
        self.setStatus("aborted")
        self.killed.emit()
コード例 #4
0
    def createProcessGUI(self):
        """Create the GUI for a selected WPS process based on the DescribeProcess
           response document. Mandatory inputs are marked as red, default is black"""

        # Lists which store the inputs and meta information (format, occurs, ...)
        # This list is initialized every time the GUI is created
        self.complexInputComboBoxList = []  # complex input for single raster and vector maps
        self.complexInputListWidgetList = []  # complex input for multiple raster and vector maps
        self.complexInputTextBoxList = []  # complex inpt of type text/plain
        self.literalInputComboBoxList = []  # literal value list with selectable answers
        self.literalInputLineEditList = []  # literal value list with single text line input
        self.bboxInputLineEditList = []  # bbox value list with single text line input
        self.complexOutputComboBoxList = []  # list combo box
        self.inputDataTypeList = {}
        self.outputDataTypeList = {}

        flags = (
            Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint
        )  # QgisGui.ModalDialogFlags

        self.processUrl = self.process.processUrl
        self.processIdentifier = self.process.processIdentifier
        self.processName = self.process.processName

        # Create the layouts and the scroll area
        self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
        self.dlgProcessLayout = QGridLayout()
        # Two tabs, one for the process inputs and one for the documentation
        # TODO: add a tab for literal outputs
        self.dlgProcessTab = QTabWidget()
        self.dlgProcessTabFrame = QFrame()
        self.dlgProcessTabFrameLayout = QGridLayout()
        # The process description can be very long, so we make it scrollable
        self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

        self.dlgProcessScrollAreaWidget = QFrame()
        self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

        # First part of the gui is a short overview about the process
        self.identifier = self.process.identifier
        title = self.process.title
        abstract = self.process.abstract
        self.addIntroduction(self.identifier, title)

        # If no Input Data  are requested
        if len(self.process.inputs) == 0:
            self.defineProcess()
            return 0

        # Generate the input GUI buttons and widgets

        res = self.generateProcessInputsGUI()
        if res == 0:
            return 0

        # Generate the editable outpt widgets, you can set the output to none if it is not requested
        self.generateProcessOutputsGUI()

        self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
        self.dlgProcessScrollAreaWidget.setLayout(self.dlgProcessScrollAreaWidgetLayout)
        self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
        self.dlgProcessScrollArea.setWidgetResizable(True)

        self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

        self.addOkCancelButtons(self.dlgProcess, self.dlgProcessTabFrameLayout)

        self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
        self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

        self.tools.addDocumentationTab(self.dlgProcessTab, abstract)

        self.dlgProcessLayout.addWidget(self.dlgProcessTab)
        self.dlgProcess.setLayout(self.dlgProcessLayout)
        self.dlgProcess.setGeometry(QRect(190, 100, 800, 600))
        self.dlgProcess.show()
コード例 #5
0
ファイル: QgsWpsServer.py プロジェクト: 1tylermitchell/qgswps
class QgsWps:
  MSG_BOX_TITLE = "WPS Client"
  
  def __init__(self, iface):
    # Save reference to the QGIS interface
    self.iface = iface  
    self.minimumRevision = 12026
    self.localePath = ""
    
    #Initialise the translation environment    
    userPluginPath = QFileInfo(QgsApplication.qgisUserDbFilePath()).path()+"/python/plugins/wps"  
    systemPluginPath = QgsApplication.prefixPath()+"/share/qgis/python/plugins/wps"
    myLocaleName = QSettings().value("locale/userLocale").toString()
    myLocale = myLocaleName[0:2]
    if QFileInfo(userPluginPath).exists():
      self.pluginPath = userPluginPath
      self.localePath = userPluginPath+"/i18n/wps_"+myLocale+".qm"
    elif QFileInfo(systemPluginPath).exists():
      self.pluginPath = systemPluginPath
      self.localePath = systemPluginPath+"/i18n/wps_"+myLocale+".qm"

    if QFileInfo(self.localePath).exists():
      self.translator = QTranslator()
      self.translator.load(self.localePath)
      
      if qVersion() > '4.3.3':        
        QCoreApplication.installTranslator(self.translator)  
        

  ##############################################################################

  def initGui(self):
 
    # Create action that will start plugin configuration
     self.action = QAction(QIcon(":/plugins/wps/images/wps-add.png"), "WPS Client", self.iface.mainWindow())
     QObject.connect(self.action, SIGNAL("triggered()"), self.run)
         
    # Add toolbar button and menu item
     self.iface.addToolBarIcon(self.action)
     self.iface.addPluginToMenu("WPS", self.action)
    
     self.doc = QtXml.QDomDocument()
     self.tmpPath = QDir.tempPath()
    
     self.tools = QgsWpsTools(self.iface)

    
#    QObject.connect(self.myDockWidget, SIGNAL("flipDirection()"), self.flipDirection) 

  ##############################################################################

  def unload(self):
    self.iface.removePluginMenu("WPS", self.action)
    self.iface.removeToolBarIcon(self.action)

##############################################################################

  def run(self):  
       
    flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
    self.dlg = QgsWpsGui(self.iface.mainWindow(),  flags)    
    QObject.connect(self.dlg, SIGNAL("getDescription(QString, QTreeWidgetItem)"), self.createProcessGUI)    
    QObject.connect(self.dlg, SIGNAL("newServer()"), self.newServer)    
    QObject.connect(self.dlg, SIGNAL("editServer(QString)"), self.editServer)    
    QObject.connect(self.dlg, SIGNAL("deleteServer(QString)"), self.deleteServer)        
    QObject.connect(self.dlg, SIGNAL("connectServer(QString)"), self.createCapabilitiesGUI)    
    self.dlg.initQgsWpsGui()

    self.myDockWidget = QgsWpsDockWidget(self.dlg)
    self.iface.addDockWidget(Qt.LeftDockWidgetArea, self.myDockWidget)
    self.myDockWidget.show()

  ##############################################################################

  def newServer(self):
    flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
    dlgNew = QgsNewHttpConnectionBaseGui(self.dlg,  flags)  
    dlgNew.show()
    self.dlg.initQgsWpsGui()

  ##############################################################################

  def editServer(self, name):
    info = self.tools.getServer(name)
    flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
    dlgEdit = QgsNewHttpConnectionBaseGui(self.dlg,  flags)  
    dlgEdit.txtName.setText(name)
    dlgEdit.txtUrl.setText(info["scheme"]+"://"+info["server"]+info["path"])
    dlgEdit.show()
    self.dlg.initQgsWpsGui()    

  ##############################################################################

  def deleteServer(self,  name):
    settings = QSettings()
    settings.beginGroup("WPS")
    settings.remove(name)
    settings.endGroup()
    self.dlg.initQgsWpsGui() 

  ##############################################################################

  def createCapabilitiesGUI(self, connection):
    if not self.tools.webConnectionExists(connection):
        return 0
        
    itemListAll = self.tools.getCapabilities(connection)
    
#    QMessageBox.information(None, '', itemListAll)
    self.dlg.initTreeWPSServices(itemListAll)

  ##############################################################################

  def createProcessGUI(self,name, item):
    """Create the GUI for a selected WPS process based on the DescribeProcess
       response document. Mandatory inputs are marked as red, default is black"""
    try:
      self.processIdentifier = item.text(0)
    except:
      QMessageBox.warning(None,'',QCoreApplication.translate("QgsWps",'Please select a Process'))
      return 0

    # Lists which store the inputs and meta information (format, occurs, ...)
    # This list is initialized every time the GUI is created
    self.complexInputComboBoxList = [] # complex input for single raster and vector maps
    self.complexInputListWidgetList = [] # complex input for multiple raster and vector maps
    self.complexInputTextBoxList = [] # complex inpt of type text/plain
    self.literalInputComboBoxList = [] # literal value list with selectable answers
    self.literalInputLineEditList = [] # literal value list with single text line input
    self.complexOutputComboBoxList = [] # list combo box
    self.inputDataTypeList = {}
    self.inputsMetaInfo = {} # dictionary for input metainfo, key is the input identifier
    self.outputsMetaInfo = {} # dictionary for output metainfo, key is the output identifier
    self.outputDataTypeList = {}

    self.processName = name
    flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
    # Recive the XML process description
    self.doc.setContent(self.tools.getServiceXML(self.processName,"DescribeProcess",self.processIdentifier), True)     
    DataInputs = self.doc.elementsByTagName("Input")
    DataOutputs = self.doc.elementsByTagName("Output")

    # Create the layouts and the scroll area
    self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
    self.dlgProcessLayout = QGridLayout()
    # Two tabs, one for the process inputs and one for the documentation
    # TODO: add a tab for literal outputs
    self.dlgProcessTab = QTabWidget()
    self.dlgProcessTabFrame = QFrame()
    self.dlgProcessTabFrameLayout = QGridLayout()
    # The process description can be very long, so we make it scrollable
    self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

    self.dlgProcessScrollAreaWidget = QFrame()
    self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

    # First part of the gui is a short overview about the process
    identifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(self.doc)
    self.addIntroduction(identifier, title)
    
    # If no Input Data  are requested
    if DataInputs.size()==0:
      self.defineProcess()
      return 0
  
    # Generate the input GUI buttons and widgets
    self.generateProcessInputsGUI(DataInputs)
    # Generate the editable outpt widgets, you can set the output to none if it is not requested
    self.generateProcessOutputsGUI(DataOutputs)
    
    self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
    self.dlgProcessScrollAreaWidget.setLayout(self.dlgProcessScrollAreaWidgetLayout)
    self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
    self.dlgProcessScrollArea.setWidgetResizable(True)

    self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

    self.addOkCancelButtons()

    self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
    self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

    self.addDocumentationTab(abstract)

    self.dlgProcessLayout.addWidget(self.dlgProcessTab)
    self.dlgProcess.setLayout(self.dlgProcessLayout)
    self.dlgProcess.setGeometry(QRect(190,100,800,600))
    self.dlgProcess.show()

  ##############################################################################

  def generateProcessInputsGUI(self, DataInputs):
    """Generate the GUI for all Inputs defined in the process description XML file"""

    # Create the complex inputs at first
    for i in range(DataInputs.size()):
      f_element = DataInputs.at(i).toElement()

      inputIdentifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(f_element)

      complexData = f_element.elementsByTagName("ComplexData")
      minOccurs = int(f_element.attribute("minOccurs"))
      maxOccurs = int(f_element.attribute("maxOccurs"))

      # Iterate over all complex inputs and add combo boxes, text boxes or list widgets 
      if complexData.size() > 0:
        # Das i-te ComplexData Objekt auswerten
        complexDataTypeElement = complexData.at(0).toElement()
        complexDataFormat = self.tools.getDefaultMimeType(complexDataTypeElement)
        supportedComplexDataFormat = self.tools.getSupportedMimeTypes(complexDataTypeElement)

        # Store the input formats
        self.inputsMetaInfo[inputIdentifier] = supportedComplexDataFormat
        self.inputDataTypeList[inputIdentifier] = complexDataFormat

        # Attach the selected vector or raster maps
        if self.tools.isMimeTypeVector(complexDataFormat["MimeType"]) != None:
          # Vector inputs
          layerNamesList = self.tools.getLayerNameList(0)
          if maxOccurs == 1:
            self.complexInputComboBoxList.append(self.addComplexInputComboBox(title, inputIdentifier, str(complexDataFormat), layerNamesList, minOccurs))
          else:
            self.complexInputListWidgetList.append(self.addComplexInputListWidget(title, inputIdentifier, str(complexDataFormat), layerNamesList, minOccurs))
        elif self.tools.isMimeTypeText(complexDataFormat["MimeType"]) != None:
          # Text inputs
          self.complexInputTextBoxList.append(self.addComplexInputTextBox(title, inputIdentifier, minOccurs))
        elif self.tools.isMimeTypeRaster(complexDataFormat["MimeType"]) != None:
          # Raster inputs
          layerNamesList = self.tools.getLayerNameList(1)
          if maxOccurs == 1:
            self.complexInputComboBoxList.append(self.addComplexInputComboBox(title, inputIdentifier, str(complexDataFormat), layerNamesList, minOccurs))
          else:
            self.complexInputListWidgetList.append(self.addComplexInputListWidget(title, inputIdentifier, str(complexDataFormat), layerNamesList, minOccurs))
        else:
          # We assume text inputs in case of an unknown mime type
          self.complexInputTextBoxList.append(self.addComplexInputTextBox(title, inputIdentifier, minOccurs))            

    # Create the literal inputs as second
    for i in range(DataInputs.size()):
      f_element = DataInputs.at(i).toElement()

      inputIdentifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(f_element)

      literalData = f_element.elementsByTagName("LiteralData")
      minOccurs = int(f_element.attribute("minOccurs"))
      maxOccurs = int(f_element.attribute("maxOccurs"))

      if literalData.size() > 0:
        allowedValuesElement = literalData.at(0).toElement()
        aValues = allowedValuesElement.elementsByTagNameNS("http://www.opengis.net/ows/1.1","AllowedValues")
        dValue = str(allowedValuesElement.elementsByTagName("DefaultValue").at(0).toElement().text())
#        print "Checking allowed values " + str(aValues.size())
        if aValues.size() > 0:
          valList = self.tools.allowedValues(aValues)
          if len(valList) > 0:
            if len(valList[0]) > 0:
              self.literalInputComboBoxList.append(self.addLiteralComboBox(title, inputIdentifier, valList, minOccurs))
            else:
              self.literalInputLineEditList.append(self.addLiteralLineEdit(title, inputIdentifier, minOccurs, str(valList)))
        else:
          self.literalInputLineEditList.append(self.addLiteralLineEdit(title, inputIdentifier, minOccurs, dValue))

    # At last, create the bounding box inputs
    for i in range(DataInputs.size()):
      f_element = DataInputs.at(i).toElement()

      inputIdentifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(f_element)
      
      bBoxData = f_element.elementsByTagName("BoundingBoxData")
      minOccurs = int(f_element.attribute("minOccurs"))
      maxOccurs = int(f_element.attribute("maxOccurs"))

      if bBoxData.size() > 0:
        crsListe = []
        bBoxElement = bBoxData.at(0).toElement()
        defaultCrsElement = bBoxElement.elementsByTagName("Default").at(0).toElement()
        defaultCrs = defaultCrsElement.elementsByTagName("CRS").at(0).toElement().attributeNS("http://www.w3.org/1999/xlink", "href")
        crsListe.append(defaultCrs)
        self.addLiteralLineEdit(title+"(minx,miny,maxx,maxy)", inputIdentifier, minOccurs)

        supportedCrsElements = bBoxElement.elementsByTagName("Supported")

        for i in range(supportedCrsElements.size()):
          crsListe.append(supportedCrsElements.at(i).toElement().elementsByTagName("CRS").at(0).toElement().attributeNS("http://www.w3.org/1999/xlink", "href"))

        self.literalInputComboBoxList.append(self.addLiteralComboBox("Supported CRS", inputIdentifier,crsListe, minOccurs))


    self.addCheckBox(QCoreApplication.translate("QgsWps","Process selected objects only"), QCoreApplication.translate("QgsWps","Selected"))
    
  ##############################################################################

  def generateProcessOutputsGUI(self, DataOutputs):
    """Generate the GUI for all complex ouputs defined in the process description XML file"""

    if DataOutputs.size() < 1:
        return

    groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
    groupbox.setTitle("Complex output(s)")
    layout = QVBoxLayout()

    # Add all complex outputs
    for i in range(DataOutputs.size()):
      f_element = DataOutputs.at(i).toElement()

      outputIdentifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(f_element)
      complexOutput = f_element.elementsByTagName("ComplexOutput")

      # Iterate over all complex inputs and add combo boxes, text boxes or list widgets 
      if complexOutput.size() > 0:
        # Das i-te ComplexData Objekt auswerten
        complexOutputTypeElement = complexOutput.at(0).toElement()
        complexOutputFormat = self.tools.getDefaultMimeType(complexOutputTypeElement)
        supportedcomplexOutputFormat = self.tools.getSupportedMimeTypes(complexOutputTypeElement)

        # Store the input formats
        self.outputsMetaInfo[outputIdentifier] = supportedcomplexOutputFormat
        self.outputDataTypeList[outputIdentifier] = complexOutputFormat
        
        widget, comboBox = self.addComplexOutputComboBox(groupbox, outputIdentifier, title, str(complexOutputFormat))
        self.complexOutputComboBoxList.append(comboBox)
        layout.addWidget(widget)
    
    # Set the layout
    groupbox.setLayout(layout)
    # Add the outputs
    self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)
      
  ##############################################################################

  def addComplexInputComboBox(self, title, name, mimeType, namesList, minOccurs):
      """Adds a combobox to select a raster or vector map as input to the process tab"""

      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()
      
      # This input is optional
      if minOccurs == 0:
        namesList.append("<None>")

      comboBox = QComboBox(groupbox)
      comboBox.addItems(namesList)
      comboBox.setObjectName(name)
      comboBox.setMinimumWidth(179)
      comboBox.setMaximumWidth(179)
      comboBox.setMinimumHeight(25)
      
      myLabel = QLabel(self.dlgProcessScrollAreaWidget)
      myLabel.setObjectName("qLabel"+name)

      if minOccurs > 0:
        string = "[" + name + "] <br>" + title
        myLabel.setText("<font color='Red'>" + string + "</font>" + " <br>(" + mimeType + ")")
      else:
        string = "[" + name + "]\n" + title + " <br>(" + mimeType + ")"
        myLabel.setText(string)

      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(comboBox)
      
      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

      return comboBox              

   
  ##############################################################################

  def addComplexOutputComboBox(self, widget, name, title, mimeType):
      """Adds a combobox to select a raster or vector map as input to the process tab"""

      groupbox = QGroupBox(widget)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()
      
      namesList = []
      # Generate a unique name for the layer
      namesList.append(self.tools.uniqueLayerName(self.processIdentifier + "_" + name + "_"))
      namesList.append("<None>")

      comboBox = QComboBox(groupbox)
      comboBox.setEditable(True)
      comboBox.addItems(namesList)
      comboBox.setObjectName(name)
      comboBox.setMinimumWidth(250)
      comboBox.setMaximumWidth(250)
      comboBox.setMinimumHeight(25)
      
      myLabel = QLabel(widget)
      myLabel.setObjectName("qLabel"+name)

      string = "[" + name + "] <br>" + title
      myLabel.setText("<font color='Green'>" + string + "</font>" + " <br>(" + mimeType + ")")

      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(comboBox)
      
      groupbox.setLayout(layout)

      return groupbox, comboBox              

  ##############################################################################

  def addComplexInputListWidget(self, title, name, mimeType, namesList, minOccurs):
      """Adds a widget for multiple raster or vector selections as inputs to the process tab"""
      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()

      # This input is optional
      if minOccurs == 0:
        namesList.append("<None>")

      listWidget = QListWidget(groupbox)
      listWidget.addItems(namesList)
      listWidget.setObjectName(name)
      listWidget.setMinimumWidth(179)
      listWidget.setMaximumWidth(179)
      listWidget.setMinimumHeight(120)
      listWidget.setMaximumHeight(120)
      listWidget.setSelectionMode(QAbstractItemView.ExtendedSelection)

      myLabel = QLabel(self.dlgProcessScrollAreaWidget)
      myLabel.setObjectName("qLabel"+name)

      if minOccurs > 0:
        string = "[" + name + "] <br>" + title
        myLabel.setText("<font color='Red'>" + string + "</font>" + " <br>(" + mimeType + ")")
      else:
        string = "[" + name + "]\n" + title + " <br>(" + mimeType + ")"
        myLabel.setText(string)

      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(listWidget)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

      return listWidget

  ##############################################################################

  def addComplexInputTextBox(self, title, name, minOccurs):
      """Adds a widget to insert text as complex inputs to the process tab"""
      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(50)
      layout = QHBoxLayout()

      textBox = QTextEdit(groupbox)
      textBox.setObjectName(name)
      textBox.setMinimumWidth(200)
      textBox.setMaximumWidth(200)
      textBox.setMinimumHeight(50)

      myLabel = QLabel(self.dlgProcessScrollAreaWidget)
      myLabel.setObjectName("qLabel"+name)

      if minOccurs > 0:
        string = "[" + name + "] <br>" + title
        myLabel.setText("<font color='Red'>" + string + "</font>")
      else:
        string = "[" + name + "]\n" + title
        myLabel.setText(string)

      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(textBox)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

      return textBox

  ##############################################################################

  def addLiteralComboBox(self, title, name, namesList, minOccurs):

      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()

      comboBox = QComboBox(self.dlgProcessScrollAreaWidget)
      comboBox.addItems(namesList)
      comboBox.setObjectName(name)
      comboBox.setMinimumWidth(179)
      comboBox.setMaximumWidth(179)
      comboBox.setMinimumHeight(25)

      myLabel = QLabel(self.dlgProcessScrollAreaWidget)
      myLabel.setObjectName("qLabel"+name)

      if minOccurs > 0:
        string = "[" + name + "] <br>" + title
        myLabel.setText("<font color='Red'>" + string + "</font>")
      else:
        string = "[" + name + "]\n" + title
        myLabel.setText(string)
        
      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(comboBox)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

      return comboBox

  ##############################################################################

  def addLiteralLineEdit(self, title, name, minOccurs, defaultValue=""):

      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()

      myLineEdit = QLineEdit(groupbox)
      myLineEdit.setObjectName(name)
      myLineEdit.setMinimumWidth(179)
      myLineEdit.setMaximumWidth(179)
      myLineEdit.setMinimumHeight(25)
      myLineEdit.setText(defaultValue)
      
      myLabel = QLabel(groupbox)
      myLabel.setObjectName("qLabel"+name)

      if minOccurs > 0:
        string = "[" + name + "] <br>" + title
        myLabel.setText("<font color='Red'>" + string + "</font>")
      else:
        string = "[" + name + "]\n" + title
        myLabel.setText(string)
        
      myLabel.setWordWrap(True)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(myLineEdit)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

      return myLineEdit

  ##############################################################################

  def addCheckBox(self,  title,  name):

      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      #groupbox.setTitle(name)
      groupbox.setMinimumHeight(25)
      layout = QHBoxLayout()

      myCheckBox = QCheckBox(groupbox)
      myCheckBox.setObjectName("chkBox"+name)
      myCheckBox.setChecked(False)
      
      myLabel = QLabel(groupbox)
      myLabel.setObjectName("qLabel"+name)  
      myLabel.setText("(" + name + ")" + "\n" + title)
      myLabel.setMinimumWidth(400)
      myLabel.setMinimumHeight(25)
      myLabel.setWordWrap(True)

      layout.addWidget(myLabel)
      layout.addStretch(1)
      layout.addWidget(myCheckBox)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)

  ##############################################################################

  def addIntroduction(self,  name, title):

      groupbox = QGroupBox(self.dlgProcessScrollAreaWidget)
      groupbox.setTitle(name)
      layout = QVBoxLayout()

      myLabel = QLabel(groupbox)
      myLabel.setObjectName("qLabel"+name)
      myLabel.setText(QString(title))
      myLabel.setMinimumWidth(600)
      myLabel.setMinimumHeight(25)
      myLabel.setWordWrap(True)

      layout.addWidget(myLabel)

      groupbox.setLayout(layout)

      self.dlgProcessScrollAreaWidgetLayout.addWidget(groupbox)
      
  ##############################################################################

  def addDocumentationTab(self, abstract):
    # Check for URL
    if str(abstract).find("http://") == 0:
      textBox = QtWebKit.QWebView(self.dlgProcessTab)
      textBox.load(QUrl(abstract))
      textBox.show()
    else:
      textBox = QTextBrowser(self.dlgProcessTab)
      textBox.setText(QString(abstract))

    self.dlgProcessTab.addTab(textBox, "Documentation")

  ##############################################################################

  def addOkCancelButtons(self):

    groupBox = QFrame()
    layout = QHBoxLayout()

    btnOk = QPushButton(groupBox)
    btnOk.setText(QString("Run"))
    btnOk.setMinimumWidth(100)
    btnOk.setMaximumWidth(100)

    btnCancel = QPushButton(groupBox)
    btnCancel.setText("Back")
    btnCancel.setMinimumWidth(100)
    btnCancel.setMaximumWidth(100)

#    lblStatus = QLabel(groupBox)
#    lblStatus.setText('Prozess Status: ')
#
#    lneStatus = QLineEdit(groupBox)
#
#    layout.addWidget(lblStatus)
#    layout.addWidget(lneStatus)
    layout.addStretch(10)
    layout.addWidget(btnCancel)
    layout.addWidget(btnOk)
    
    groupBox.setLayout(layout)
    self.dlgProcessTabFrameLayout.addWidget(groupBox)

    QObject.connect(btnOk,SIGNAL("clicked()"),self.defineProcess)
    QObject.connect(btnCancel,SIGNAL("clicked()"),self.dlgProcess.close)

  ##############################################################################

  def defineProcess(self):
    """Create the execute request"""
    self.doc.setContent(self.tools.getServiceXML(self.processName,"DescribeProcess",self.processIdentifier))
    dataInputs = self.doc.elementsByTagName("Input")
    dataOutputs = self.doc.elementsByTagName("Output")

    QApplication.setOverrideCursor(Qt.WaitCursor)
    result = self.tools.getServer(self.processName)
    scheme = result["scheme"]
    path = result["path"]
    server = result["server"]

    checkBoxes = self.dlgProcess.findChildren(QCheckBox)

    if len(checkBoxes) > 0:
      useSelected = checkBoxes[0].isChecked()

    postString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
    postString += "<wps:Execute service=\"WPS\" version=\""+ self.tools.getServiceVersion() + "\"" + \
                   " xmlns:wps=\"http://www.opengis.net/wps/1.0.0\"" + \
                   " xmlns:ows=\"http://www.opengis.net/ows/1.1\"" +\
                   " xmlns:xlink=\"http://www.w3.org/1999/xlink\"" +\
                   " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\""\
                   " xsi:schemaLocation=\"http://www.opengis.net/wps/1.0.0" +\
                   " http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd\">"
                   
    postString += "<ows:Identifier>"+self.processIdentifier+"</ows:Identifier>\n"
    postString += "<wps:DataInputs>"

    # text/plain inputs ########################################################
    for textBox in self.complexInputTextBoxList:
      # Do not add undefined inputs
      if textBox == None or str(textBox.document().toPlainText()) == "":
        continue

      postString += self.tools.xmlExecuteRequestInputStart(textBox.objectName())
      postString += "<wps:ComplexData>" + textBox.document().toPlainText() + "</wps:ComplexData>\n"
      postString += self.tools.xmlExecuteRequestInputEnd()


    # Single raster and vector inputs ##########################################
    for comboBox in self.complexInputComboBoxList:
      # Do not add undefined inputs
      if comboBox == None or unicode(comboBox.currentText(), 'latin1') == "<None>":
        continue
           
      postString += self.tools.xmlExecuteRequestInputStart(comboBox.objectName())

      # TODO: Check for more types
      mimeType = self.inputDataTypeList[comboBox.objectName()]["MimeType"]
      schema = self.inputDataTypeList[comboBox.objectName()]["Schema"]
      encoding = self.inputDataTypeList[comboBox.objectName()]["Encoding"]
      self.myLayer = self.tools.getVLayer(comboBox.currentText())
      
      if self.tools.isMimeTypeVector(mimeType) != None and mimeType == "text/xml":
        postString += "<wps:ComplexData mimeType=\"" + mimeType + "\" schema=\"" + schema + "\" enconding=\"" + encoding + "\">"
        postString += self.tools.createTmpGML(comboBox.currentText(), useSelected).replace("> <","><")
        postString = postString.replace("xsi:schemaLocation=\"http://ogr.maptools.org/ qt_temp.xsd\"", "xsi:schemaLocation=\"http://schemas.opengis.net/gml/3.1.1/base/ gml.xsd\"")
      elif self.tools.isMimeTypeVector(mimeType) != None or self.tools.isMimeTypeRaster(mimeType) != None:
        postString += "<wps:ComplexData mimeType=\"" + mimeType + "\" encoding=\"base64\">\n"
        postString += self.tools.createTmpBase64(comboBox.currentText())

      postString += "</wps:ComplexData>\n"
      postString += self.tools.xmlExecuteRequestInputEnd()

    # Multiple raster and vector inputs ########################################
    for listWidgets in self.complexInputListWidgetList:
      # Do not add undefined inputs
      if listWidgets == None:
        continue
        
      mimeType = self.inputDataTypeList[listWidgets.objectName()]["MimeType"]
      schema = self.inputDataTypeList[listWidgets.objectName()]["Schema"]
      encoding = self.inputDataTypeList[listWidgets.objectName()]["Encoding"]
      
      # Iterate over each seletced item
      for i in range(listWidgets.count()):
        listWidget = listWidgets.item(i)
        if listWidget == None or listWidget.isSelected() == False or str(listWidget.text()) == "<None>":
          continue
          
        postString += self.tools.xmlExecuteRequestInputStart(listWidgets.objectName())

        # TODO: Check for more types
        if self.tools.isMimeTypeVector(mimeType) != None and mimeType == "text/xml":
          postString += "<wps:ComplexData mimeType=\"" + mimeType + "\" schema=\"" + schema + "\" enconding=\"" + encoding + "\">"
#          postString += self.tools.createTmpGML(listWidget.text(), useSelected).replace("> <","><").replace("http://ogr.maptools.org/ qt_temp.xsd","http://ogr.maptools.org/qt_temp.xsd")
          postString += self.tools.createTmpGML(listWidget.text(), useSelected).replace("> <","><")
        elif self.tools.isMimeTypeVector(mimeType) != None or self.tools.isMimeTypeRaster(mimeType) != None:
          postString += "<wps:ComplexData mimeType=\"" + mimeType + "\" encoding=\"base64\">\n"
          postString += self.tools.createTmpBase64(listWidget.text())

        postString += "</wps:ComplexData>\n"
        postString += self.tools.xmlExecuteRequestInputEnd()

    # Literal data as combo box choice #########################################
    for comboBox in self.literalInputComboBoxList:
      if comboBox == None or comboBox.currentText() == "":
          continue

      postString += self.tools.xmlExecuteRequestInputStart(comboBox.objectName())
      postString += "<wps:LiteralData>"+comboBox.currentText()+"</wps:LiteralData>\n"
      postString += self.tools.xmlExecuteRequestInputEnd()

   # Literal data as combo box choice #########################################
    for lineEdit in self.literalInputLineEditList:
      if lineEdit == None or lineEdit.text() == "":
          continue

      postString += self.tools.xmlExecuteRequestInputStart(lineEdit.objectName())
      postString += "<wps:LiteralData>"+lineEdit.text()+"</wps:LiteralData>\n"
      postString += self.tools.xmlExecuteRequestInputEnd()

    postString += "</wps:DataInputs>\n"
    
    # Attach only defined outputs
    if dataOutputs.size() > 0 and len(self.complexOutputComboBoxList) > 0:
      postString += "<wps:ResponseForm>\n"
      # The server should store the result. No lineage should be returned or status
      postString += "<wps:ResponseDocument lineage=\"false\" storeExecuteResponse=\"true\" status=\"false\">\n"

      # Attach ALL literal outputs #############################################
      for i in range(dataOutputs.size()):
        f_element = dataOutputs.at(i).toElement()
        outputIdentifier = f_element.elementsByTagName("ows:Identifier").at(0).toElement().text().simplified()
        literalOutputType = f_element.elementsByTagName("LiteralOutput")

        # Complex data is always requested as reference
        if literalOutputType.size() != 0:
          postString += "<wps:Output>\n"
          postString += "<ows:Identifier>"+outputIdentifier+"</ows:Identifier>\n"
          postString += "</wps:Output>\n"

      # Attach selected complex outputs ########################################
      for comboBox in self.complexOutputComboBoxList:
        # Do not add undefined outputs
        if comboBox == None or str(comboBox.currentText()) == "<None>":
          continue
        outputIdentifier = comboBox.objectName()
        
        mimeType = self.outputDataTypeList[outputIdentifier]["MimeType"]
        schema = self.outputDataTypeList[outputIdentifier]["Schema"]
        encoding = self.outputDataTypeList[outputIdentifier]["Encoding"]
        
        postString += "<wps:Output asReference=\"true\" mimeType=\"" + mimeType + "\" schema=\"" + schema + "\">"
        postString += "<ows:Identifier>" + outputIdentifier + "</ows:Identifier>\n"
        postString += "</wps:Output>\n"

      postString += "</wps:ResponseDocument>\n"
      postString  += "</wps:ResponseForm>\n"
      
    postString += "</wps:Execute>\n"

    # This is for debug purpose only
    if DEBUG == True:
#        self.tools.popUpMessageBox("Execute request", postString)
        # Write the request into a file
        outFile = open('/tmp/qwps_execute_request.xml', 'w')
        outFile.write(postString)
        outFile.close()

    QApplication.restoreOverrideCursor()
    QApplication .setOverrideCursor(Qt.ArrowCursor)
    
    self.theThread.setScheme(scheme)
    self.theThread.setServer(server)
    self.theThread.setPath(path)
    self.theThread.setPostString(postString)
    
    self.theThread.start()          
        
#    self.serverThreadDlg = QgsWpsServerThreadDialog(self.processIdentifier,  scheme,  server,  path,  postString)
#    QObject.connect(self.serverThreadDlg, SIGNAL("serviceFinished(QString)"), self.resultHandler) 
#    self.serverThreadDlg.show()

    

  ##############################################################################

  def resultHandler(self, resultXML,  resultType="store"):
    """Handle the result of the WPS Execute request and add the outputs as new
       map layers to the regestry or open an information window to show literal
       outputs."""
# This is for debug purpose only
    if DEBUG == True:
        self.tools.popUpMessageBox("Result XML", resultXML)
        # Write the response into a file
        outFile = open('/tmp/qwps_execute_response.xml', 'w')
        outFile.write(resultXML)
        outFile.close()
        
    self.doc.setContent(resultXML,  True)
    resultNodeList = self.doc.elementsByTagNameNS("http://www.opengis.net/wps/1.0.0","Output")
    
    # TODO: Check if the process does not run correctly before
    if resultNodeList.size() > 0:
        for i in range(resultNodeList.size()):
          f_element = resultNodeList.at(i).toElement()

          # Fetch the referenced complex data
          if f_element.elementsByTagNameNS("http://www.opengis.net/wps/1.0.0", "Reference").size() > 0:
            identifier = f_element.elementsByTagNameNS("http://www.opengis.net/ows/1.1","Identifier").at(0).toElement().text().simplified()
            reference = f_element.elementsByTagNameNS("http://www.opengis.net/wps/1.0.0","Reference").at(0).toElement()

            # Get the reference
            fileLink = reference.attribute("href", "0")

            # Try with namespace if not successful
            if fileLink == '0':
              fileLink = reference.attributeNS("http://www.w3.org/1999/xlink", "href", "0")
            if fileLink == '0':
              QMessageBox.warning(None, '', str(QCoreApplication.translate("WPS Error: Unable to download the result of reference: ")) + str(fileLink))
              return

            # Get the mime type of the result
            mimeType = str(reference.attribute("mimeType", "0").toLower())

            if fileLink != '0':                            
              # Set a valid layerName
              layerName = self.tools.uniqueLayerName(self.processIdentifier + "_" + identifier)
              # The layername is normally defined in the comboBox
              for comboBox in self.complexOutputComboBoxList:
                if comboBox.objectName() == identifier:
                  layerName = comboBox.currentText()

              resultFileConnector = urllib.urlretrieve(unicode(fileLink,'latin1'))
              resultFile = resultFileConnector[0]
              # Vector data 
              # TODO: Check for schema GML and KML
              if self.tools.isMimeTypeVector(mimeType) != None:
                vlayer = QgsVectorLayer(resultFile, layerName, "ogr")
                vlayer.setCrs(self.myLayer.dataProvider().crs())
                QgsMapLayerRegistry.instance().addMapLayer(vlayer)
              # Raster data
              elif self.tools.isMimeTypeRaster(mimeType) != None:
                # We can directly attach the new layer
                rLayer = QgsRasterLayer(resultFile, layerName)
                QgsMapLayerRegistry.instance().addMapLayer(rLayer)
              # Text data
              elif self.tools.isMimeTypeText(mimeType) != None:
                #TODO: this should be handled in a separate diaqgswps.pylog to save the text output as file'
                QApplication.restoreOverrideCursor()
                text = open(resultFile, 'r').read()
                # TODO: This should be a text dialog with safe option
                self.tools.popUpMessageBox(QCoreApplication.translate("QgsWps",'Process result (text/plain)'),text)
              # Everything else
              else:
                # For unsupported mime types we assume text
                QApplication.restoreOverrideCursor()
                content = open(resultFile, 'r').read()
                # TODO: This should have a safe option
                self.tools.popUpMessageBox(QCoreApplication.translate("QgsWps", 'Process result (unsupported mime type)'), content)
                
          elif f_element.elementsByTagNameNS("http://www.opengis.net/wps/1.0.0", "LiteralData").size() > 0:
            QApplication.restoreOverrideCursor()
            literalText = f_element.elementsByTagNameNS("http://www.opengis.net/wps/1.0.0", "LiteralData").at(0).toElement().text()
            self.tools.popUpMessageBox(QCoreApplication.translate("QgsWps",'Result'),literalText)
          else:
            QMessageBox.warning(None, '', str(QCoreApplication.translate("WPS Error: Missing reference or literal data in response")))
    else:
        print "Error"
        self.tools.errorHandler(resultXML)

    pass
    
    
  def setProcessStarted(self):
#      self.dlgProcess.lneStatus.setText("Process started and running ... ")
        groupBox = QGroupBox(self.myDockWidget.groupBox)
        layout = QHBoxLayout()
        self.lblProcess = QLabel(groupBox)
        self.lblProcess.setText(QString("Process "+self.processIdentifier+" running ..."))
#        
#        layout.addWidget(btnCancel)

        self.btnProcessCancel = QToolButton(groupBox)
        self.btnProcessCancel.setIcon(QIcon(":/plugins/wps/images/button_cancel.png") )
        self.btnProcessCancel.setMinimumWidth(30)
        self.btnProcessCancel.setMaximumWidth(30)
        layout.addWidget(self.lblProcess)
        layout.addStretch(10)
        layout.addWidget(self.btnProcessCancel)

        self.myDockWidget.groupBox.setLayout(layout)
        self.myDockWidget.btnConnect.setEnabled(False)
        QObject.connect(self.btnProcessCancel,SIGNAL("clicked()"),self.terminateProcessing)

#        self.statusLabel = None
#        self.statusLabel = QLabel(QCoreApplication.translate("QgsWps",  "WPS running ... "),  self.iface.mainWindow().statusBar())
#        self.iface.mainWindow().statusBar().insertPermanentWidget(0,  self.statusLabel)
        pass


  def setProcessFinished(self):
        self.iface.mainWindow().statusBar().removeWidget(self.statusLabel)
        self.lblProcess.setText('Process finished')
        self.myDockWidget.btnConnect.setEnabled(True)
        QMessageBox.information(self.iface.mainWindow(),'Status', "Process "+self.processIdentifier+" finished")
      
  def setProcessTerminated(self):
        QMessageBox.information(None,'Status', "Process "+self.processIdentifier+" terminated")
        self.myDockWidget.btnConnect.setEnabled(True)

        
  def closeDialog(self):
      self.close()
      
  def removeProcessFromWidget(self):
      pass

  def terminateProcessing( self ):
       if self.theThread != None:
         self.theThread.terminate()
         self.theThread = None    
         self.lblProcess.setText('Process '+self.processIdentifier+' terminated')
         btnProcessRemove = self.btnProcessCancel
         btnProcessRemove.setText('remove')
         self.myDockWidget.btnConnect.setEnabled(True)
         QObject.connect(btnProcessRemove,SIGNAL("clicked()"),self.removeProcessFromWidget)         
   
  def stopProcessing( self ):
       if self.theThread != None:
         self.theThread.stop()
         self.theThread = None    
コード例 #6
0
ファイル: QgsWpsServer.py プロジェクト: 1tylermitchell/qgswps
  def createProcessGUI(self,name, item):
    """Create the GUI for a selected WPS process based on the DescribeProcess
       response document. Mandatory inputs are marked as red, default is black"""
    try:
      self.processIdentifier = item.text(0)
    except:
      QMessageBox.warning(None,'',QCoreApplication.translate("QgsWps",'Please select a Process'))
      return 0

    # Lists which store the inputs and meta information (format, occurs, ...)
    # This list is initialized every time the GUI is created
    self.complexInputComboBoxList = [] # complex input for single raster and vector maps
    self.complexInputListWidgetList = [] # complex input for multiple raster and vector maps
    self.complexInputTextBoxList = [] # complex inpt of type text/plain
    self.literalInputComboBoxList = [] # literal value list with selectable answers
    self.literalInputLineEditList = [] # literal value list with single text line input
    self.complexOutputComboBoxList = [] # list combo box
    self.inputDataTypeList = {}
    self.inputsMetaInfo = {} # dictionary for input metainfo, key is the input identifier
    self.outputsMetaInfo = {} # dictionary for output metainfo, key is the output identifier
    self.outputDataTypeList = {}

    self.processName = name
    flags = Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint  # QgisGui.ModalDialogFlags
    # Recive the XML process description
    self.doc.setContent(self.tools.getServiceXML(self.processName,"DescribeProcess",self.processIdentifier), True)     
    DataInputs = self.doc.elementsByTagName("Input")
    DataOutputs = self.doc.elementsByTagName("Output")

    # Create the layouts and the scroll area
    self.dlgProcess = QgsWpsDescribeProcessGui(self.dlg, flags)
    self.dlgProcessLayout = QGridLayout()
    # Two tabs, one for the process inputs and one for the documentation
    # TODO: add a tab for literal outputs
    self.dlgProcessTab = QTabWidget()
    self.dlgProcessTabFrame = QFrame()
    self.dlgProcessTabFrameLayout = QGridLayout()
    # The process description can be very long, so we make it scrollable
    self.dlgProcessScrollArea = QScrollArea(self.dlgProcessTab)

    self.dlgProcessScrollAreaWidget = QFrame()
    self.dlgProcessScrollAreaWidgetLayout = QGridLayout()

    # First part of the gui is a short overview about the process
    identifier, title, abstract = self.tools.getIdentifierTitleAbstractFromElement(self.doc)
    self.addIntroduction(identifier, title)
    
    # If no Input Data  are requested
    if DataInputs.size()==0:
      self.defineProcess()
      return 0
  
    # Generate the input GUI buttons and widgets
    self.generateProcessInputsGUI(DataInputs)
    # Generate the editable outpt widgets, you can set the output to none if it is not requested
    self.generateProcessOutputsGUI(DataOutputs)
    
    self.dlgProcessScrollAreaWidgetLayout.setSpacing(10)
    self.dlgProcessScrollAreaWidget.setLayout(self.dlgProcessScrollAreaWidgetLayout)
    self.dlgProcessScrollArea.setWidget(self.dlgProcessScrollAreaWidget)
    self.dlgProcessScrollArea.setWidgetResizable(True)

    self.dlgProcessTabFrameLayout.addWidget(self.dlgProcessScrollArea)

    self.addOkCancelButtons()

    self.dlgProcessTabFrame.setLayout(self.dlgProcessTabFrameLayout)
    self.dlgProcessTab.addTab(self.dlgProcessTabFrame, "Process")

    self.addDocumentationTab(abstract)

    self.dlgProcessLayout.addWidget(self.dlgProcessTab)
    self.dlgProcess.setLayout(self.dlgProcessLayout)
    self.dlgProcess.setGeometry(QRect(190,100,800,600))
    self.dlgProcess.show()