Regular Expression example: Brush up and add a way to preview replacements

- Set a fixed font on text edits so that parentheses stand out
- Rearrange the layout to have the text at the top be prevent
  long texts from being wrapped
- Add a replacement field where one can exercise replacement
  with the \1, \2... placeholders.

Pick-to: 6.1
Change-Id: I140a62e1fb2cd1c6bfe02a2f01b7f06a6f3b5eb2
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 11 insertions, 1 deletions

diff --git a/examples/widgets/tools/regularexpression/regularexpressiondialog.h b/examples/widgets/tools/regularexpression/regularexpressiondialog.h
index b0db4d884c..b5d592c3c2 100644
--- a/examples/widgets/tools/regularexpression/regularexpressiondialog.h
+++ b/examples/widgets/tools/regularexpression/regularexpressiondialog.h
@@ -54,6 +54,7 @@
 #define REGULAREXPRESSIONDIALOG_H
 
 #include <QDialog>
+#include <QRegularExpression>
 
 QT_BEGIN_NAMESPACE
 class QCheckBox;
@@ -72,18 +73,25 @@ class RegularExpressionDialog : public QDialog
 public:
     RegularExpressionDialog(QWidget *parent = nullptr);
 
+private slots:
+    void updateReplacement();
+
 private:
     void refresh();
     void setupUi();
     QWidget *setupLeftUi();
-    QWidget *setupRightUi();
+    QWidget *setupTextUi();
+    QWidget *setupOptionsUi();
+    QWidget *setupInfoUi();
     void setResultUiEnabled(bool enabled);
 
     QLineEdit *patternLineEdit;
     QLineEdit *rawStringLiteralLineEdit;
     QLineEdit *escapedPatternLineEdit;
+    QLineEdit *replacementLineEdit;
 
     QPlainTextEdit *subjectTextEdit;
+    QPlainTextEdit *replacementTextEdit;
 
     QCheckBox *caseInsensitiveOptionCheckBox;
     QCheckBox *dotMatchesEverythingOptionCheckBox;
@@ -104,6 +112,8 @@ private:
 
     QLabel *regexpStatusLabel;
     QTreeWidget *namedGroupsTreeWidget;
+
+    QRegularExpression regularExpression;
 };
 
 #endif