QmlDesigner: Detect data types for CSV models

Task-number: QDS-11081
Change-Id: I88418e31f0fd033d7d5ec3c03fea26ae1e4e2362
Reviewed-by: Ali Kianian <ali.kianian@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>

src/plugins/qmldesigner/components/collectioneditor/collectiondetails.cpp

@@ -428,6 +428,7 @@ void CollectionDetails::resetPropertyType(CollectionProperty &property)
                 break;
         }
     }
+
     property.type = type;
 }
 

src/plugins/qmldesigner/components/collectioneditor/collectiondetailsmodel.cpp

@@ -542,12 +542,52 @@ void CollectionDetailsModel::loadCsvCollection(const QString &source,
         }
     }
 
+    for (const QString &header : std::as_const(headers)) {
+        for (QJsonObject &element: elements) {
+            QVariant variantValue;
+            if (element.contains(header)) {
+                variantValue = variantFromString(element.value(header).toString());
+                element[header] = variantValue.toJsonValue();
+
+                if (variantValue.isValid())
+                    break;
+            }
+        }
+    }
+
     SourceFormat sourceFormat = csvFileIsOk ? SourceFormat::Csv : SourceFormat::Unknown;
     beginResetModel();
     m_currentCollection.resetDetails(headers, elements, sourceFormat);
     endResetModel();
 }
 
+QVariant CollectionDetailsModel::variantFromString(const QString &value)
+{
+    constexpr QStringView typesPattern{u"(?<boolean>^(?:true|false)$)|"
+                                       u"(?<number>^(?:-?(?:0|[1-9]\\d*)?(?:\\.\\d*)?(?<=\\d|\\.)"
+                                       u"(?:e-?(?:0|[1-9]\\d*))?|0x[0-9a-f]+)$)|"
+                                       u"(?<color>^(?:#(?:(?:[0-9a-fA-F]{2}){3,4}|"
+                                       u"(?:[0-9a-fA-F]){3,4}))$)|"
+                                       u"(?<string>[A-Za-z][A-Za-z0-9_ -]*)"};
+    static QRegularExpression validator(typesPattern.toString());
+    const QString trimmedValue = value.trimmed();
+    QRegularExpressionMatch match = validator.match(trimmedValue);
+    QVariant variantValue = value;
+
+    if (value.isEmpty())
+        return QVariant();
+    if (!match.captured(u"boolean").isEmpty())
+        return variantValue.toBool();
+    if (!match.captured(u"number").isEmpty())
+        return variantValue.toDouble();
+    if (!match.captured(u"color").isEmpty())
+        return variantValue.value<QColor>();
+    if (!match.captured(u"string").isEmpty())
+        return variantValue.toString();
+
+    return QVariant::fromValue(value);
+}
+
 void CollectionDetailsModel::setCollectionName(const QString &newCollectionName)
 {
     if (m_collectionName != newCollectionName) {

src/plugins/qmldesigner/components/collectioneditor/collectiondetailsmodel.h

@@ -83,6 +83,7 @@ private:
     void loadCsvCollection(const QString &source, const QString &collectionName);
     bool saveCollectionAsJson(const QString &path, const QJsonArray &content, const QString &collectionName);
     bool saveCollectionAsCsv(const QString &path, const QString &content);
+    QVariant variantFromString(const QString &value);
 
     QHash<CollectionReference, CollectionDetails> m_openedCollections;
     CollectionDetails m_currentCollection;