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50 
51 #include <QtWidgets>
52 
53 #include "mainwindow.h"
54 #include "xmlwriter.h"
55 
MainWindow()56 MainWindow::MainWindow()
57 {
58     QMenu *fileMenu = new QMenu(tr("&File"));
59 
60     QAction *saveAction = fileMenu->addAction(tr("&Save..."));
61     saveAction->setShortcut(tr("Ctrl+S"));
62 
63     QAction *quitAction = fileMenu->addAction(tr("E&xit"));
64     quitAction->setShortcut(tr("Ctrl+Q"));
65 
66     QMenu *insertMenu = new QMenu(tr("&Insert"));
67 
68     QAction *calendarAction = insertMenu->addAction(tr("&Calendar"));
69     calendarAction->setShortcut(tr("Ctrl+I"));
70 
71     menuBar()->addMenu(fileMenu);
72     menuBar()->addMenu(insertMenu);
73 
74     editor = new QTextEdit(this);
75 
76     connect(saveAction, &QAction::triggered, this, &MainWindow::saveFile);
77     connect(quitAction, &QAction::triggered, this, &MainWindow::close);
78     connect(calendarAction, &QAction::triggered, this, &MainWindow::insertCalendar);
79 
80     setCentralWidget(editor);
81     setWindowTitle(tr("Text Document Writer"));
82 }
83 
saveFile()84 void MainWindow::saveFile()
85 {
86     QString fileName = QFileDialog::getSaveFileName(this,
87         tr("Save document as:"), "", tr("XML (*.xml)"));
88 
89     if (!fileName.isEmpty()) {
90         if (writeXml(fileName))
91             setWindowTitle(fileName);
92         else
93             QMessageBox::warning(this, tr("Warning"),
94                 tr("Failed to save the document."), QMessageBox::Cancel,
95                 QMessageBox::NoButton);
96     }
97 }
98 
insertCalendar()99 void MainWindow::insertCalendar()
100 {
101     QTextCursor cursor(editor->textCursor());
102     cursor.movePosition(QTextCursor::Start);
103 
104     QTextCharFormat format(cursor.charFormat());
105     format.setFontFamily("Courier");
106 
107     QTextCharFormat boldFormat = format;
108     boldFormat.setFontWeight(QFont::Bold);
109 
110     cursor.insertBlock();
111     cursor.insertText(" ", boldFormat);
112 
113     QDate date = QDate::currentDate();
114     int year = date.year(), month = date.month();
115 
116     for (int weekDay = 1; weekDay <= 7; ++weekDay) {
117         cursor.insertText(QString("%1 ").arg(QLocale::system().dayName(weekDay), 3),
118             boldFormat);
119     }
120 
121     cursor.insertBlock();
122     cursor.insertText(" ", format);
123 
124     for (int column = 1; column < QDate(year, month, 1).dayOfWeek(); ++column) {
125         cursor.insertText("    ", format);
126     }
127 
128     for (int day = 1; day <= date.daysInMonth(); ++day) {
129         int weekDay = QDate(year, month, day).dayOfWeek();
130 
131         if (QDate(year, month, day) == date)
132             cursor.insertText(QString("%1 ").arg(day, 3), boldFormat);
133         else
134             cursor.insertText(QString("%1 ").arg(day, 3), format);
135 
136         if (weekDay == 7) {
137             cursor.insertBlock();
138             cursor.insertText(" ", format);
139         }
140     }
141 }
142 
writeXml(const QString & fileName)143 bool MainWindow::writeXml(const QString &fileName)
144 {
145     XmlWriter documentWriter(editor->document());
146 
147     QDomDocument *domDocument = documentWriter.toXml();
148     QFile file(fileName);
149 
150     if (file.open(QFile::WriteOnly)) {
151         QTextStream textStream(&file);
152 
153         textStream << domDocument->toByteArray(1);
154         return true;
155     }
156     else
157         return false;
158 }
159