tree update model performance

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      Steps to Reproduce

      run the attached example tree-model-replace-performance_zk4803.zul
      click the button to replace the tree model

      Current Result

      The initial rendering is as fast as expected:

      Updating the model with the same number of nodes takes significantly longer

      Increasing the number of items leads to browser warning about unresponsive scripts.

      Expected Result

      Similar times to initial and updated tree item rendering.

      Debug Information

      Workaround

      call tree.invalidate() after replacing the model

        1. image-2021-02-22-17-39-52-363.png
          image-2021-02-22-17-39-52-363.png
          212 kB
        2. tree-model-replace-performance_zk4803.zul
          0.7 kB

            Assignee:
            rudyhuang
            Reporter:
            cor3000
            Votes:
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            Watchers:
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              Created:
              Updated:
              Resolved:

                Estimated:
                Original Estimate - 2 days
                2d
                Remaining:
                Time Spent - 4 hours Remaining Estimate - 1 day, 4 hours
                1d 4h
                Logged:
                Time Spent - 4 hours Remaining Estimate - 1 day, 4 hours
                4h