Cleanup Widgets examples - foreach

Cleanup the Widgets examples - replace foreach with range-based for loop
in the remaining directories

Change-Id: I321e6c0f414401a1ae4fb65762b97d894b725afa
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>

3 files changed, 23 insertions, 22 deletions

diff --git a/examples/widgets/richtext/orderform/mainwindow.cpp b/examples/widgets/richtext/orderform/mainwindow.cpp
index 291c37edf6..0b6a2cac6c 100644
--- a/examples/widgets/richtext/orderform/mainwindow.cpp
+++ b/examples/widgets/richtext/orderform/mainwindow.cpp
@@ -126,8 +126,8 @@ void MainWindow::createLetter(const QString &name, const QString &address,
     cursor.setPosition(topFrame->lastPosition());
 
     cursor.insertText(name, textFormat);
-    QString line;
-    foreach (line, address.split("\n")) {
+    const QStringList lines = address.split('\n');
+    for (const QString &line : lines) {
         cursor.insertBlock();
         cursor.insertText(line);
     }
diff --git a/examples/widgets/richtext/syntaxhighlighter/highlighter.cpp b/examples/widgets/richtext/syntaxhighlighter/highlighter.cpp
index 6c420c328a..0c10eed6cf 100644
--- a/examples/widgets/richtext/syntaxhighlighter/highlighter.cpp
+++ b/examples/widgets/richtext/syntaxhighlighter/highlighter.cpp
@@ -58,18 +58,19 @@ Highlighter::Highlighter(QTextDocument *parent)
 
     keywordFormat.setForeground(Qt::darkBlue);
     keywordFormat.setFontWeight(QFont::Bold);
-    QStringList keywordPatterns;
-    keywordPatterns << "\\bchar\\b" << "\\bclass\\b" << "\\bconst\\b"
-                    << "\\bdouble\\b" << "\\benum\\b" << "\\bexplicit\\b"
-                    << "\\bfriend\\b" << "\\binline\\b" << "\\bint\\b"
-                    << "\\blong\\b" << "\\bnamespace\\b" << "\\boperator\\b"
-                    << "\\bprivate\\b" << "\\bprotected\\b" << "\\bpublic\\b"
-                    << "\\bshort\\b" << "\\bsignals\\b" << "\\bsigned\\b"
-                    << "\\bslots\\b" << "\\bstatic\\b" << "\\bstruct\\b"
-                    << "\\btemplate\\b" << "\\btypedef\\b" << "\\btypename\\b"
-                    << "\\bunion\\b" << "\\bunsigned\\b" << "\\bvirtual\\b"
-                    << "\\bvoid\\b" << "\\bvolatile\\b" << "\\bbool\\b";
-    foreach (const QString &pattern, keywordPatterns) {
+    const QString keywordPatterns[] = {
+        QStringLiteral("\\bchar\\b"), QStringLiteral("\\bclass\\b"), QStringLiteral("\\bconst\\b"),
+        QStringLiteral("\\bdouble\\b"), QStringLiteral("\\benum\\b"), QStringLiteral("\\bexplicit\\b"),
+        QStringLiteral("\\bfriend\\b"), QStringLiteral("\\binline\\b"), QStringLiteral("\\bint\\b"),
+        QStringLiteral("\\blong\\b"), QStringLiteral("\\bnamespace\\b"), QStringLiteral("\\boperator\\b"),
+        QStringLiteral("\\bprivate\\b"), QStringLiteral("\\bprotected\\b"), QStringLiteral("\\bpublic\\b"),
+        QStringLiteral("\\bshort\\b"), QStringLiteral("\\bsignals\\b"), QStringLiteral("\\bsigned\\b"),
+        QStringLiteral("\\bslots\\b"), QStringLiteral("\\bstatic\\b"), QStringLiteral("\\bstruct\\b"),
+        QStringLiteral("\\btemplate\\b"), QStringLiteral("\\btypedef\\b"), QStringLiteral("\\btypename\\b"),
+        QStringLiteral("\\bunion\\b"), QStringLiteral("\\bunsigned\\b"), QStringLiteral("\\bvirtual\\b"),
+        QStringLiteral("\\bvoid\\b"), QStringLiteral("\\bvolatile\\b"), QStringLiteral("\\bbool\\b")
+    };
+    for (const QString &pattern : keywordPatterns) {
         rule.pattern = QRegularExpression(pattern);
         rule.format = keywordFormat;
         highlightingRules.append(rule);
@@ -80,14 +81,14 @@ Highlighter::Highlighter(QTextDocument *parent)
 //! [2]
     classFormat.setFontWeight(QFont::Bold);
     classFormat.setForeground(Qt::darkMagenta);
-    rule.pattern = QRegularExpression("\\bQ[A-Za-z]+\\b");
+    rule.pattern = QRegularExpression(QStringLiteral("\\bQ[A-Za-z]+\\b"));
     rule.format = classFormat;
     highlightingRules.append(rule);
 //! [2]
 
 //! [3]
     singleLineCommentFormat.setForeground(Qt::red);
-    rule.pattern = QRegularExpression("//[^\n]*");
+    rule.pattern = QRegularExpression(QStringLiteral("//[^\n]*"));
     rule.format = singleLineCommentFormat;
     highlightingRules.append(rule);
 
@@ -96,7 +97,7 @@ Highlighter::Highlighter(QTextDocument *parent)
 
 //! [4]
     quotationFormat.setForeground(Qt::darkGreen);
-    rule.pattern = QRegularExpression("\".*\"");
+    rule.pattern = QRegularExpression(QStringLiteral("\".*\""));
     rule.format = quotationFormat;
     highlightingRules.append(rule);
 //! [4]
@@ -104,21 +105,21 @@ Highlighter::Highlighter(QTextDocument *parent)
 //! [5]
     functionFormat.setFontItalic(true);
     functionFormat.setForeground(Qt::blue);
-    rule.pattern = QRegularExpression("\\b[A-Za-z0-9_]+(?=\\()");
+    rule.pattern = QRegularExpression(QStringLiteral("\\b[A-Za-z0-9_]+(?=\\()"));
     rule.format = functionFormat;
     highlightingRules.append(rule);
 //! [5]
 
 //! [6]
-    commentStartExpression = QRegularExpression("/\\*");
-    commentEndExpression = QRegularExpression("\\*/");
+    commentStartExpression = QRegularExpression(QStringLiteral("/\\*"));
+    commentEndExpression = QRegularExpression(QStringLiteral("\\*/"));
 }
 //! [6]
 
 //! [7]
 void Highlighter::highlightBlock(const QString &text)
 {
-    foreach (const HighlightingRule &rule, highlightingRules) {
+    for (const HighlightingRule &rule : qAsConst(highlightingRules)) {
         QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
         while (matchIterator.hasNext()) {
             QRegularExpressionMatch match = matchIterator.next();
diff --git a/examples/widgets/richtext/textedit/textedit.cpp b/examples/widgets/richtext/textedit/textedit.cpp
index 0d51ce61ad..00ea0325dc 100644
--- a/examples/widgets/richtext/textedit/textedit.cpp
+++ b/examples/widgets/richtext/textedit/textedit.cpp
@@ -377,7 +377,7 @@ void TextEdit::setupTextActions()
     comboSize->setEditable(true);
 
     const QList<int> standardSizes = QFontDatabase::standardSizes();
-    foreach (int size, standardSizes)
+    for (int size : standardSizes)
         comboSize->addItem(QString::number(size));
     comboSize->setCurrentIndex(standardSizes.indexOf(QApplication::font().pointSize()));