Preserve user changes in custom wizard on back

Task-number: QTCREATORBUG-6774
Change-Id: I7c06f794f04b6e019a7d8b65d810096a1d9ebf82
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/projectexplorer/customwizard/customwizardpage.cpp

@@ -356,18 +356,19 @@ void CustomWizardFieldPage::initializePage()
 {
     QWizardPage::initializePage();
     clearError();
-    // Note that the field mechanism will always restore the value
-    // set on it when entering the page, so, there is no point in
-    // trying to preserve user modifications of the text.
     foreach(const LineEditData &led, m_lineEdits) {
-        if (!led.defaultText.isEmpty()) {
+        if (!led.userChange.isNull()) {
+            led.lineEdit->setText(led.userChange);
+        } else if (!led.defaultText.isEmpty()) {
             QString defaultText = led.defaultText;
             CustomWizardContext::replaceFields(m_context->baseReplacements, &defaultText);
             led.lineEdit->setText(defaultText);
         }
     }
     foreach(const TextEditData &ted, m_textEdits) {
-        if (!ted.defaultText.isEmpty()) {
+        if (!ted.userChange.isNull()) {
+            ted.textEdit->setText(ted.userChange);
+        } else if (!ted.defaultText.isEmpty()) {
             QString defaultText = ted.defaultText;
             CustomWizardContext::replaceFields(m_context->baseReplacements, &defaultText);
             ted.textEdit->setText(defaultText);
@@ -375,6 +376,30 @@ void CustomWizardFieldPage::initializePage()
     }
 }
 
+void CustomWizardFieldPage::cleanupPage()
+{
+    for (int i = 0; i < m_lineEdits.count(); ++i) {
+        LineEditData &led = m_lineEdits[i];
+        QString defaultText = led.defaultText;
+        CustomWizardContext::replaceFields(m_context->baseReplacements, &defaultText);
+        if (led.lineEdit->text() != defaultText)
+            led.userChange = led.lineEdit->text();
+        else
+            led.userChange.clear();
+
+    }
+    for (int i= 0; i < m_textEdits.count(); ++i) {
+        TextEditData &ted = m_textEdits[i];
+        QString defaultText = ted.defaultText;
+        CustomWizardContext::replaceFields(m_context->baseReplacements, &defaultText);
+        if (ted.textEdit->toHtml() != ted.defaultText && ted.textEdit->toPlainText() != ted.defaultText)
+            ted.userChange = ted.textEdit->toHtml();
+        else
+            ted.userChange.clear();
+    }
+    QWizardPage::cleanupPage();
+}
+
 bool CustomWizardFieldPage::validatePage()
 {
     clearError();

src/plugins/projectexplorer/customwizard/customwizardpage.h

@@ -119,6 +119,7 @@ public:
 
     virtual bool validatePage();
     virtual void initializePage();
+    virtual void cleanupPage();
 
     static QMap<QString, QString> replacementMap(const QWizard *w,
                                                  const QSharedPointer<CustomWizardContext> &ctx,
@@ -133,11 +134,13 @@ private:
         explicit LineEditData(QLineEdit* le = 0, const QString &defText = QString());
         QLineEdit* lineEdit;
         QString defaultText;
+        QString userChange;
     };
     struct TextEditData {
         explicit TextEditData(QTextEdit* le = 0, const QString &defText = QString());
         QTextEdit* textEdit;
         QString defaultText;
+        QString userChange;
     };
     typedef QList<LineEditData> LineEditDataList;
     typedef QList<TextEditData> TextEditDataList;