[qooxdoo-bugs] [Bug 774] New: No vertical scrollbar in TreeVirtual in some cases

[<bug...@qo...>]

http://bugzilla.qooxdoo.org/show_bug.cgi?id=3D774

           Summary: No vertical scrollbar in TreeVirtual in some cases
           Product: framework
           Version: 0.7.3
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P3
         Component: ui-table
        AssignedTo: no...@qo...
        ReportedBy: no...@ya...
         QAContact: qoo...@li...


Vertical scrollbar is not being shown in TreeVirtual in some cases. To see =
this
situation try the following code and open =E2=80=9CWorkspace=E2=80=9D folde=
r in the tree.
There will be no scrollbar in Internet Explorer 6. In Firefox 2.0.0.11
scrollbar will flicker. In Opera 9.24 scrollbar will be not shown or it will
flicker.
In my application I noticed another problem that is related to this one I
suppose. After scrollbar is shown tree is being refreshed very slowly (main=
ly
in IE and Firefox) when user scrolls down or up (especially when user click=
s on
bar to scroll several rows at once). Unfortunately I did not manage to
reproduce that situation by using the following code.
Described problems take place only in version 0.7.3. I suppose they are rel=
ated
to table because I do not see these problems in my application if folder wi=
th
table classes is replaced by classes from 0.7.2 version.

Code snippet:

var doc =3D qx.ui.core.ClientDocument.getInstance();

// tree
var tree =3D new qx.ui.treevirtual.TreeVirtual("Tree");
tree.set({
        left   : 10,
        top    : 10,
        width  : 350,
        height : 180,
        border : "inset-thin"
      });
doc.add(tree);
tree.setColumnWidth(0, 400);
tree.setBorder("inset-thin");

// tree data model
var dataModel =3D tree.getDataModel();

var te1 =3D dataModel.addBranch(null, "Desktop", true);
var te;
te =3D dataModel.addBranch(te1, "Files", false);
for (var i =3D 1; i < 11; i++) {
    dataModel.addLeaf(te, "File " + i);
}
te =3D dataModel.addBranch(te1, "Workspace", false);
dataModel.addLeaf(te, "Windows (C:)");
dataModel.addLeaf(te, "Documents (D:)");
dataModel.addLeaf(te, "Works (E:)");
dataModel.addLeaf(te, "Files (F:)");
te =3D dataModel.addBranch(te1, "Network", false);
for (var i =3D 1; i < 51; i++) {
    dataModel.addLeaf(te, "Computer " + i);
}
te =3D dataModel.addBranch(te1, "Trash", true);
var te2 =3D dataModel.addBranch(null, "Inbox", false);
te =3D dataModel.addBranch(te2, "Spam", false);
for (var i =3D 1; i < 3000; i++)
{
  dataModel.addLeaf(te, "Spam Message #" + i);
}
dataModel.addBranch(te2, "Sent", true);
dataModel.addBranch(te2, "Trash", true);
dataModel.addBranch(te2, "Data", true);
dataModel.addBranch(te2, "Edit", true);
dataModel.setData();


Denis


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