Read/write of Color and Image paint working.

Element.cpp

@@ -41,3 +41,89 @@ Element::~Element() {
   _allocator->free(_id);
 }
 
+
+void Element::read(const QDomElement& obj)
+{
+  QList<QString> attributeNames = _propertiesAttributes();
+
+  // Fill up properties.
+  int count = metaObject()->propertyCount();
+  for (int i=0; i<count; ++i) {
+    // Get property/tag.
+    QMetaProperty property = metaObject()->property(i);
+
+    // If property is writable, try to find it and rewrite it.
+    if (property.isWritable())
+    {
+      // Name of property.
+      const char* propertyName =  property.name();
+
+      // Always ignore objectName default property.
+      if (QString(propertyName) == QString("objectName"))
+        continue;
+
+      // Check in attributes.
+      else if (attributeNames.contains(propertyName))
+      {
+        if (obj.hasAttribute(propertyName))
+          setProperty(propertyName, obj.attribute(propertyName));
+      }
+
+      // Check in children.
+      else
+      {
+        // Find element.
+        QDomElement propertyElem = obj.firstChildElement(propertyName);
+        if (!propertyElem.isNull())
+        {
+          // Set property.
+          setProperty(propertyName, propertyElem.text());
+        }
+      }
+    }
+  }
+}
+
+void Element::write(QDomElement& obj)
+{
+  QList<QString> attributeNames = _propertiesAttributes();
+
+  // Write up classname.
+  obj.setAttribute("className", metaObject()->className());
+
+  // Fill up properties.
+  int count = metaObject()->propertyCount();
+  for (int i=0; i<count; ++i) {
+    // Get property/tag.
+    QMetaProperty property = metaObject()->property(i);
+
+    // If property is writable, try to find it and rewrite it.
+    if (property.isWritable() && property.isReadable())
+    {
+      // Name of property.
+      const char* propertyName =  property.name();
+      qDebug() << "Read " << propertyName << " : " << property.read(this) << endl;
+      QString propertyValue = property.read(this).toString();
+
+      // Add to attributes.
+      if (attributeNames.contains(propertyName))
+      {
+        obj.setAttribute(propertyName, propertyValue);
+      }
+
+      // Add to children.
+      else
+      {
+        QDomElement propertyNode = obj.ownerDocument().createElement(propertyName);
+        QDomText    text         = obj.ownerDocument().createTextNode(propertyValue);
+        propertyNode.appendChild(text);
+        obj.appendChild(propertyNode);
+      }
+    }
+  }
+}
+
+QList<QString> Element::_propertiesAttributes() const
+{
+  return QList<QString>() << "name" << "locked";
+}