QmlDesigner: Fix unenclosed multistrings

Task-number: QDS-10681
Change-Id: Ide92c93c85f0d61b48c4c1cb0096cd8db201238d
Reviewed-by: Aleksei German <aleksei.german@qt.io>

src/plugins/qmldesigner/components/bindingeditor/actioneditor.cpp

@@ -100,7 +100,37 @@ QString ActionEditor::connectionValue() const
     if (!m_dialog)
         return {};
 
-    return m_dialog->editorValue();
+    QString value = m_dialog->editorValue().trimmed();
+
+    //using parsed qml for unenclosed multistring (QDS-10681)
+    const QString testingString = QString("Item { \n"
+                                          " onWidthChanged: %1 \n"
+                                          "}")
+                                      .arg(value);
+
+    QmlJS::Document::MutablePtr firstAttemptDoc = QmlJS::Document::create({},
+                                                                          QmlJS::Dialect::QmlQtQuick2);
+    firstAttemptDoc->setSource(testingString);
+    firstAttemptDoc->parseQml();
+
+    if (!firstAttemptDoc->isParsedCorrectly()) {
+        const QString testingString2 = QString("Item { \n"
+                                               " onWidthChanged: { \n"
+                                               "  %1 \n"
+                                               " } \n"
+                                               "} \n")
+                                           .arg(value);
+
+        QmlJS::Document::MutablePtr secondAttemptDoc = QmlJS::Document::create({},
+                                                                               QmlJS::Dialect::QmlQtQuick2);
+        secondAttemptDoc->setSource(testingString2);
+        secondAttemptDoc->parseQml();
+
+        if (secondAttemptDoc->isParsedCorrectly())
+            return QString("{\n%1\n}").arg(value);
+    }
+
+    return value;
 }
 
 void ActionEditor::setConnectionValue(const QString &text)
@@ -109,6 +139,14 @@ void ActionEditor::setConnectionValue(const QString &text)
         m_dialog->setEditorValue(text);
 }
 
+QString ActionEditor::rawConnectionValue() const
+{
+    if (!m_dialog)
+        return {};
+
+    return m_dialog->editorValue();
+}
+
 bool ActionEditor::hasModelIndex() const
 {
     return m_index.isValid();

src/plugins/qmldesigner/components/bindingeditor/actioneditor.h

@@ -37,6 +37,8 @@ public:
     QString connectionValue() const;
     void setConnectionValue(const QString &text);
 
+    QString rawConnectionValue() const;
+
     bool hasModelIndex() const;
     void resetModelIndex();
     QModelIndex modelIndex() const;