在QML中，是否可以在GridLayout中创建行范围？

Question

在QML中，我想为一行网格制作一个可操作的范围。这样做的原因是我希望能够将网格内的一行标记为删除，而不会触发整个网格的重绘，因为完全重绘看起来非常笨拙并导致GUI在重新处理所有行时暂停：

我提出了一种机制，但它似乎非常hacky：

GridLayout {
  columns: 4;

  // header
  Text { Layout.alignment: Qt.AlignCenter; text: 'Red';   }
  Text { Layout.alignment: Qt.AlignCenter; text: 'Green'; }
  Text { Layout.alignment: Qt.AlignCenter; text: 'Blue';  }
  Text { Layout.alignment: Qt.AlignCenter; text: 'Remove?'; }

  Repeater {
    model: [
      {r: '100', g: '40', b:'27'},
      {r: '136', g: '63', b:'42'}
    ]
    Repeater {
      model: 4;
      property var pt : modelData;
      Loader {
        Component {
          id: _R;
          Text {
            text: pt.r;
            font.strikeout: !!pt.marked_for_deletion;
          }
        }
        Component {
          id: _G;
          Text {
            text: pt.g;
            font.strikeout: !!pt.marked_for_deletion;
          }
        }
        Component {
          id: _B;
          Text {
            text: pt.b;
            font.strikeout: !!pt.marked_for_deletion;
          }
        }
        Component {
          id: _Del;
          Button {
            width: text_input.font.pointSize*2;
            font.pointSize: text_input.font.pointSize*2;
            text: pt.marked_for_deletion ? '↶' :'-';
            onClicked: {
              pt.marked_for_deletion = !pt.marked_for_deletion;
              pt = pt;
            }
          }
        }
        sourceComponent: (
           index === 0 ? _R :
          (index === 1 ? _G :
          (index === 2 ? _B :
                         _Del)));

      }
    }
  }
}

如果没有嵌套在Repeater内的奇怪Loader，有没有更好的方法呢？ Repeater可以在没有封闭组件的情况下返回多个元素吗？我不能将Column与嵌套的Row组件一起使用，因为列不会像表格那样对齐。