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  1. Qt
  2. QTBUG-90538

"required" existing property not reflects model data if CONFIG+=qtquickcompiler enabled

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    Details

    • Platform/s:
      Linux/X11
    • Commits:
      b322a971f06823a4356f2b3aa331501aa4d0dc7f (qt/qtdeclarative/dev) 7f99a69e25ee3ae99c3b4ba713b8c6b5e8e60135 (qt/qtdeclarative/6.0) 045718e821d1d1f1d5732f123c7a9c189bd92b19 (qt/tqtc-qtdeclarative/tqtc/lts-5.15)

      Description

      The following example binds model's "visible" role to Item.visible property,
      one by "required visible" and the other by "visible: model.visible".

      Both texts should blink reflecting model.visible. However, the "required visible"
      one does not blink if compiled with CONFIG+=qtquickcompiler.

      Window {
          width: 640
          height: 480
          visible: true
      
          ListModel {
              id: fakeModel
      
              ListElement {
                  visible: false
                  tick: 0
              }
          }
      
          Column {
              spacing: 2
      
              Repeater {
                  model: fakeModel
      
                  Text {
                      required visible
                      required property int tick
                      required property var model
                      text: "hello required, tick: " + tick + ", model.visible: " + model.visible
                  }
              }
      
              Repeater {
                  model: fakeModel
      
                  Text {
                      visible: model.visible
                      text: "hello old style, tick: " + model.tick
                  }
              }
          }
      
          Timer {
              property int tick: 0
              interval: 1000
              repeat: true
              running: true
              onTriggered: {
                  ++tick;
                  fakeModel.set(0, {visible: !!(tick % 2), tick: tick});
              }
          }
      }
      

      (full source code attached)

        Attachments

        1. cachegen_reorder.txt
          4 kB
        2. cachegen.txt
          4 kB
        3. diskcache_reorder.txt
          3 kB
        4. diskcache.txt
          3 kB
        5. quick-bug-required-prop.tar.gz
          1 kB
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            People

            Assignee:
            qtqmlteam Qt Qml Team User
            Reporter:
            yunishih Yuya Nishihara
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            Watchers:
            3 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

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