<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>mainwindow.cpp Example File | Qt XML Patterns 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtxmlpatterns-index.html">Qt XML Patterns</a></td><td ><a href="qtxmlpatterns-schema-example.html">XML Schema Validation Example</a></td><td >mainwindow.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">mainwindow.cpp Example File</h1> <span class="subtitle">schema/mainwindow.cpp</span> <!-- $$$schema/mainwindow.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 The Qt Company Ltd 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QtGui></span> <span class="preprocessor">#include <QtXmlPatterns></span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include "xmlsyntaxhighlighter.h"</span> <span class="keyword">class</span> MessageHandler : <span class="keyword">public</span> <span class="type"><a href="qabstractmessagehandler.html">QAbstractMessageHandler</a></span> { <span class="keyword">public</span>: MessageHandler() : <span class="type"><a href="qabstractmessagehandler.html">QAbstractMessageHandler</a></span>(<span class="number">0</span>) { } <span class="type">QString</span> statusMessage() <span class="keyword">const</span> { <span class="keyword">return</span> m_description; } <span class="type">int</span> line() <span class="keyword">const</span> { <span class="keyword">return</span> m_sourceLocation<span class="operator">.</span>line(); } <span class="type">int</span> column() <span class="keyword">const</span> { <span class="keyword">return</span> m_sourceLocation<span class="operator">.</span>column(); } <span class="keyword">protected</span>: <span class="keyword">virtual</span> <span class="type">void</span> handleMessage(<span class="type">QtMsgType</span> type<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>description<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QUrl</span> <span class="operator">&</span>identifier<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qsourcelocation.html">QSourceLocation</a></span> <span class="operator">&</span>sourceLocation) { Q_UNUSED(type); Q_UNUSED(identifier); m_description <span class="operator">=</span> description; m_sourceLocation <span class="operator">=</span> sourceLocation; } <span class="keyword">private</span>: <span class="type">QString</span> m_description; <span class="type"><a href="qsourcelocation.html">QSourceLocation</a></span> m_sourceLocation; }; MainWindow<span class="operator">::</span>MainWindow() { setupUi(<span class="keyword">this</span>); <span class="keyword">new</span> XmlSyntaxHighlighter(schemaView<span class="operator">-</span><span class="operator">></span>document()); <span class="keyword">new</span> XmlSyntaxHighlighter(instanceEdit<span class="operator">-</span><span class="operator">></span>document()); schemaSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Contact Schema"</span>)); schemaSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Recipe Schema"</span>)); schemaSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Order Schema"</span>)); instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Valid Contact Instance"</span>)); instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Invalid Contact Instance"</span>)); connect(schemaSelection<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type">int</span>))<span class="operator">,</span> SLOT(schemaSelected(<span class="type">int</span>))); connect(instanceSelection<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type">int</span>))<span class="operator">,</span> SLOT(instanceSelected(<span class="type">int</span>))); connect(validateButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> SLOT(validate())); connect(instanceEdit<span class="operator">,</span> SIGNAL(textChanged())<span class="operator">,</span> SLOT(textChanged())); validationStatus<span class="operator">-</span><span class="operator">></span>setAlignment(<span class="type">Qt</span><span class="operator">::</span>AlignCenter <span class="operator">|</span> <span class="type">Qt</span><span class="operator">::</span>AlignVCenter); schemaSelected(<span class="number">0</span>); instanceSelected(<span class="number">0</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>schemaSelected(<span class="type">int</span> index) { instanceSelection<span class="operator">-</span><span class="operator">></span>clear(); <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) { instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Valid Contact Instance"</span>)); instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Invalid Contact Instance"</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>) { instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Valid Recipe Instance"</span>)); instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Invalid Recipe Instance"</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (index <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) { instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Valid Order Instance"</span>)); instanceSelection<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Invalid Order Instance"</span>)); } textChanged(); <span class="keyword">const</span> <span class="type">QString</span> fileName <span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">":/schema_"</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(index) <span class="operator">+</span> <span class="type">QStringLiteral</span>(<span class="string">".xsd"</span>); <span class="type">QFile</span> schemaFile(fileName); <span class="keyword">if</span> (<span class="operator">!</span>schemaFile<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly)) { qWarning() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Cannot open"</span> <span class="operator"><</span><span class="operator"><</span> <span class="type">QDir</span><span class="operator">::</span>toNativeSeparators(fileName) <span class="operator"><</span><span class="operator"><</span> <span class="char">':'</span> <span class="operator"><</span><span class="operator"><</span> schemaFile<span class="operator">.</span>errorString(); <span class="keyword">return</span>; } <span class="keyword">const</span> <span class="type">QString</span> schemaText(<span class="type">QString</span><span class="operator">::</span>fromUtf8(schemaFile<span class="operator">.</span>readAll())); schemaView<span class="operator">-</span><span class="operator">></span>setPlainText(schemaText); validate(); } <span class="type">void</span> MainWindow<span class="operator">::</span>instanceSelected(<span class="type">int</span> index) { <span class="keyword">if</span> (index <span class="operator"><</span> <span class="number">0</span>) { instanceEdit<span class="operator">-</span><span class="operator">></span>setPlainText(<span class="type">QString</span>()); <span class="keyword">return</span>; } <span class="keyword">const</span> <span class="type">QString</span> fileName <span class="operator">=</span> <span class="type">QStringLiteral</span>(<span class="string">":/instance_"</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(<span class="number">2</span> <span class="operator">*</span> schemaSelection<span class="operator">-</span><span class="operator">></span>currentIndex() <span class="operator">+</span> index) <span class="operator">+</span> <span class="type">QStringLiteral</span>(<span class="string">".xml"</span>); <span class="type">QFile</span> instanceFile(fileName); <span class="keyword">if</span> (<span class="operator">!</span>instanceFile<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly)) { qWarning() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Cannot open"</span> <span class="operator"><</span><span class="operator"><</span> <span class="type">QDir</span><span class="operator">::</span>toNativeSeparators(fileName) <span class="operator"><</span><span class="operator"><</span> <span class="char">':'</span> <span class="operator"><</span><span class="operator"><</span> instanceFile<span class="operator">.</span>errorString(); <span class="keyword">return</span>; } <span class="keyword">const</span> <span class="type">QString</span> instanceText(<span class="type">QString</span><span class="operator">::</span>fromUtf8(instanceFile<span class="operator">.</span>readAll())); instanceEdit<span class="operator">-</span><span class="operator">></span>setPlainText(instanceText); validate(); } <span class="type">void</span> MainWindow<span class="operator">::</span>validate() { <span class="keyword">const</span> <span class="type">QByteArray</span> schemaData <span class="operator">=</span> schemaView<span class="operator">-</span><span class="operator">></span>toPlainText()<span class="operator">.</span>toUtf8(); <span class="keyword">const</span> <span class="type">QByteArray</span> instanceData <span class="operator">=</span> instanceEdit<span class="operator">-</span><span class="operator">></span>toPlainText()<span class="operator">.</span>toUtf8(); MessageHandler messageHandler; <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> schema; schema<span class="operator">.</span>setMessageHandler(<span class="operator">&</span>messageHandler); schema<span class="operator">.</span>load(schemaData); bool errorOccurred <span class="operator">=</span> <span class="keyword">false</span>; <span class="keyword">if</span> (<span class="operator">!</span>schema<span class="operator">.</span>isValid()) { errorOccurred <span class="operator">=</span> <span class="keyword">true</span>; } <span class="keyword">else</span> { <span class="type"><a href="qxmlschemavalidator.html">QXmlSchemaValidator</a></span> validator(schema); <span class="keyword">if</span> (<span class="operator">!</span>validator<span class="operator">.</span>validate(instanceData)) errorOccurred <span class="operator">=</span> <span class="keyword">true</span>; } <span class="keyword">if</span> (errorOccurred) { validationStatus<span class="operator">-</span><span class="operator">></span>setText(messageHandler<span class="operator">.</span>statusMessage()); moveCursor(messageHandler<span class="operator">.</span>line()<span class="operator">,</span> messageHandler<span class="operator">.</span>column()); } <span class="keyword">else</span> { validationStatus<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"validation successful"</span>)); } <span class="keyword">const</span> <span class="type">QString</span> styleSheet <span class="operator">=</span> <span class="type">QString</span>(<span class="string">"QLabel {background: %1; padding: 3px}"</span>) <span class="operator">.</span>arg(errorOccurred <span class="operator">?</span> <span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>red)<span class="operator">.</span>lighter(<span class="number">160</span>)<span class="operator">.</span>name() : <span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>green)<span class="operator">.</span>lighter(<span class="number">160</span>)<span class="operator">.</span>name()); validationStatus<span class="operator">-</span><span class="operator">></span>setStyleSheet(styleSheet); } <span class="type">void</span> MainWindow<span class="operator">::</span>textChanged() { instanceEdit<span class="operator">-</span><span class="operator">></span>setExtraSelections(<span class="type">QList</span><span class="operator"><</span><span class="type">QTextEdit</span><span class="operator">::</span>ExtraSelection<span class="operator">></span>()); } <span class="type">void</span> MainWindow<span class="operator">::</span>moveCursor(<span class="type">int</span> line<span class="operator">,</span> <span class="type">int</span> column) { instanceEdit<span class="operator">-</span><span class="operator">></span>moveCursor(<span class="type">QTextCursor</span><span class="operator">::</span>Start); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">1</span>; i <span class="operator"><</span> line; <span class="operator">+</span><span class="operator">+</span>i) instanceEdit<span class="operator">-</span><span class="operator">></span>moveCursor(<span class="type">QTextCursor</span><span class="operator">::</span>Down); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">1</span>; i <span class="operator"><</span> column; <span class="operator">+</span><span class="operator">+</span>i) instanceEdit<span class="operator">-</span><span class="operator">></span>moveCursor(<span class="type">QTextCursor</span><span class="operator">::</span>Right); <span class="type">QList</span><span class="operator"><</span><span class="type">QTextEdit</span><span class="operator">::</span>ExtraSelection<span class="operator">></span> extraSelections; <span class="type">QTextEdit</span><span class="operator">::</span>ExtraSelection selection; <span class="keyword">const</span> <span class="type">QColor</span> lineColor <span class="operator">=</span> <span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>red)<span class="operator">.</span>lighter(<span class="number">160</span>); selection<span class="operator">.</span>format<span class="operator">.</span>setBackground(lineColor); selection<span class="operator">.</span>format<span class="operator">.</span>setProperty(<span class="type">QTextFormat</span><span class="operator">::</span>FullWidthSelection<span class="operator">,</span> <span class="keyword">true</span>); selection<span class="operator">.</span>cursor <span class="operator">=</span> instanceEdit<span class="operator">-</span><span class="operator">></span>textCursor(); selection<span class="operator">.</span>cursor<span class="operator">.</span>clearSelection(); extraSelections<span class="operator">.</span>append(selection); instanceEdit<span class="operator">-</span><span class="operator">></span>setExtraSelections(extraSelections); instanceEdit<span class="operator">-</span><span class="operator">></span>setFocus(); } </pre> </div> <!-- @@@schema/mainwindow.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>