#!/usr/bin/env python ############################################################################# ## ## Copyright (C) 2010 Riverbank Computing Limited. ## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ## All rights reserved. ## ## This file is part of the examples of PyQt. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ## the names of its contributors may be used to endorse or promote ## products derived from this software without specific prior written ## permission. ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## $QT_END_LICENSE$ ## ############################################################################# from PyQt4 import QtCore, QtGui, QtXmlPatterns try: import schema_rc3 except ImportError: import schema_rc2 from ui_schema import Ui_SchemaMainWindow try: # Python v2. unicode def encode_utf8(ba): return unicode(ba, encoding='utf8') def decode_utf8(qs): return qs.toUtf8() except NameError: # Python v3. def encode_utf8(ba): return str(ba, encoding='utf8') def decode_utf8(qs): return QtCore.QByteArray(bytes(qs, encoding='utf8')) class XmlSyntaxHighlighter(QtGui.QSyntaxHighlighter): def __init__(self, parent=None): super(XmlSyntaxHighlighter, self).__init__(parent) self.highlightingRules = [] # Tag format. format = QtGui.QTextCharFormat() format.setForeground(QtCore.Qt.darkBlue) format.setFontWeight(QtGui.QFont.Bold) pattern = QtCore.QRegExp("(<[a-zA-Z:]+\\b|<\\?[a-zA-Z:]+\\b|\\?>|>|/>|</[a-zA-Z:]+>)") self.highlightingRules.append((pattern, format)) # Attribute format. format = QtGui.QTextCharFormat() format.setForeground(QtCore.Qt.darkGreen) pattern = QtCore.QRegExp("[a-zA-Z:]+=") self.highlightingRules.append((pattern, format)) # Attribute content format. format = QtGui.QTextCharFormat() format.setForeground(QtCore.Qt.red) pattern = QtCore.QRegExp("(\"[^\"]*\"|'[^']*')") self.highlightingRules.append((pattern, format)) # Comment format. self.commentFormat = QtGui.QTextCharFormat() self.commentFormat.setForeground(QtCore.Qt.lightGray) self.commentFormat.setFontItalic(True) self.commentStartExpression = QtCore.QRegExp("<!--") self.commentEndExpression = QtCore.QRegExp("-->") def highlightBlock(self, text): for pattern, format in self.highlightingRules: expression = QtCore.QRegExp(pattern) index = expression.indexIn(text) while index >= 0: length = expression.matchedLength() self.setFormat(index, length, format) index = expression.indexIn(text, index + length) self.setCurrentBlockState(0) startIndex = 0 if self.previousBlockState() != 1: startIndex = self.commentStartExpression.indexIn(text) while startIndex >= 0: endIndex = self.commentEndExpression.indexIn(text, startIndex) if endIndex == -1: self.setCurrentBlockState(1) commentLength = text.length() - startIndex else: commentLength = endIndex - startIndex + self.commentEndExpression.matchedLength() self.setFormat(startIndex, commentLength, self.commentFormat) startIndex = self.commentStartExpression.indexIn(text, startIndex + commentLength) class MessageHandler(QtXmlPatterns.QAbstractMessageHandler): def __init__(self): super(MessageHandler, self).__init__() self.m_description = "" self.m_sourceLocation = QtXmlPatterns.QSourceLocation() def statusMessage(self): return self.m_description def line(self): return self.m_sourceLocation.line() def column(self): return self.m_sourceLocation.column() def handleMessage(self, type, description, identifier, sourceLocation): self.m_description = description self.m_sourceLocation = sourceLocation class MainWindow(QtGui.QMainWindow, Ui_SchemaMainWindow): def __init__(self): QtGui.QMainWindow.__init__(self) self.setupUi(self) XmlSyntaxHighlighter(self.schemaView.document()) XmlSyntaxHighlighter(self.instanceEdit.document()) self.schemaSelection.addItem("Contact Schema") self.schemaSelection.addItem("Recipe Schema") self.schemaSelection.addItem("Order Schema") self.instanceSelection.addItem("Valid Contact Instance") self.instanceSelection.addItem("Invalid Contact Instance") self.schemaSelection.currentIndexChanged.connect(self.schemaSelected) self.instanceSelection.currentIndexChanged.connect(self.instanceSelected) self.validateButton.clicked.connect(self.validate) self.instanceEdit.textChanged.connect(self.textChanged) self.validationStatus.setAlignment(QtCore.Qt.AlignCenter | QtCore.Qt.AlignVCenter) self.schemaSelected(0) self.instanceSelected(0) def schemaSelected(self, index): self.instanceSelection.clear() if index == 0: self.instanceSelection.addItem("Valid Contact Instance") self.instanceSelection.addItem("Invalid Contact Instance") elif index == 1: self.instanceSelection.addItem("Valid Recipe Instance") self.instanceSelection.addItem("Invalid Recipe Instance") elif index == 2: self.instanceSelection.addItem("Valid Order Instance") self.instanceSelection.addItem("Invalid Order Instance") self.textChanged() schemaFile = QtCore.QFile(':/schema_%d.xsd' % index) schemaFile.open(QtCore.QIODevice.ReadOnly) schemaData = schemaFile.readAll() self.schemaView.setPlainText(encode_utf8(schemaData)) self.validate() def instanceSelected(self, index): index += 2 * self.schemaSelection.currentIndex() instanceFile = QtCore.QFile(':/instance_%d.xml' % index) instanceFile.open(QtCore.QIODevice.ReadOnly) instanceData = instanceFile.readAll() self.instanceEdit.setPlainText(encode_utf8(instanceData)) self.validate() def validate(self): schemaData = decode_utf8(self.schemaView.toPlainText()) instanceData = decode_utf8(self.instanceEdit.toPlainText()) messageHandler = MessageHandler() schema = QtXmlPatterns.QXmlSchema() schema.setMessageHandler(messageHandler) schema.load(schemaData) errorOccurred = False if not schema.isValid(): errorOccurred = True else: validator = QtXmlPatterns.QXmlSchemaValidator(schema) if not validator.validate(instanceData): errorOccurred = True if errorOccurred: self.validationStatus.setText(messageHandler.statusMessage()) self.moveCursor(messageHandler.line(), messageHandler.column()) background = QtCore.Qt.red else: self.validationStatus.setText("validation successful") background = QtCore.Qt.green styleSheet = 'QLabel {background: %s; padding: 3px}' % QtGui.QColor(background).light(160).name() self.validationStatus.setStyleSheet(styleSheet) def textChanged(self): self.instanceEdit.setExtraSelections([]) def moveCursor(self, line, column): self.instanceEdit.moveCursor(QtGui.QTextCursor.Start) for i in range(1, line): self.instanceEdit.moveCursor(QtGui.QTextCursor.Down) for i in range(1, column): self.instanceEdit.moveCursor(QtGui.QTextCursor.Right) extraSelections = [] selection = QtGui.QTextEdit.ExtraSelection() lineColor = QtGui.QColor(QtCore.Qt.red).lighter(160) selection.format.setBackground(lineColor) selection.format.setProperty(QtGui.QTextFormat.FullWidthSelection, True) selection.cursor = self.instanceEdit.textCursor() selection.cursor.clearSelection() extraSelections.append(selection) self.instanceEdit.setExtraSelections(extraSelections) self.instanceEdit.setFocus() if __name__ == '__main__': import sys app = QtGui.QApplication(sys.argv) window = MainWindow() window.show() sys.exit(app.exec_())