Hi Derrell,
sorry for taking your time, but I cant figure it out. That is my function:
sortByColumn : function(tree, col)
{
var clazz = this;
tree.resetSelection();
var dm = tree.getDataModel();
function sortByTime(a, b) {
var x = a.time.toLowerCase();
var y = b.time.toLowerCase();
return ((x < y) ? -1 : ((x > y) ? 1 : 0));
}
var data = dm.getData(); // Current Tree Data
var newData = new Array(); // new Tree Data
for (i=0; i<data.length; i++)
{
if (data[i] == null)
{
var newNode = null;
}
else
{
var newNode =
qx.lang.Object.clone(data[i]);
var children =
data[i].children;
var sortTime = new Array();
if (data[i].type == 2 &&
children.length>1) // Nur Kindelemente sortieren, wenn Node ein Branch und
Anzahl Kindelemente mehr als 1
{
var childTime
= new Array(); // Hier wird ein zu sortierendes Array erstellt; time:
'18:30', node : OBJECT
for (x=0;
x<children.length; x++)
{
var cNodeId = children[x]; // Node Id des Kindelements
var cNode = tree.nodeGet(cNodeId); // Hier landet das Kindelement
childTime.push(
{
time: cNode.columnData[1],
node: cNode
}
);
}
childTime.sort(sortByTime); // Sortiere anhand von Time
var
sortchilderen = new Array(); // neue Node id Reihenfolge erstellen für
children
for (a=0;
a<childTime.length; a++)
{
sortchilderen.push(childTime[a].node.nodeId);
}
newNode.children = sortchilderen;
}
}
newData.push(newNode);
}
dm.setData(newData);
},
It works fine, but with a null in the tree array it crashes. Could you tell
me a better way to sort leafs?
Regards Sak
Von: Derrell Lipman [mailto:derrell.lip...@unwireduniverse.com]
Gesendet: Donnerstag, 14. Oktober 2010 15:05
An: qooxdoo Development
Betreff: Re: [qooxdoo-devel] virtual tree pune sets NULL, but setData dont
accepts NULL in nodeArray
On Thu, Oct 14, 2010 at 06:33, Mustafa Sak <i...@saksys.de> wrote:
Hi Derrell,
just now I tried your advise:
You indicated that you passed the modified array. That is incorrect. You do
not pass the altered array to setData(). Instead, you simply call
setData(NULL). When it renders the data, it skips nodes that are null:
// Skip deleted nodes
if (child == null)
{
continue;
}
But there is no skipping.
tree.getDataModel().prune(nodeId, true);
console.log(tree.getDataModel().getData());
tree.getDataModel().setData(null);
console.log(tree.getDataModel().getData());
Because of the null elements of the array, my sortfunction doesnt work
proper. So did I understand you wrong? Is there no way to clear the NULL
elements?
The nulls will still be in the data model, but they will not be rendered.
What are you sorting and why do the nulls affect your sort function? They'd
all sort to the same place, and then be ignored while rendering...???
The nulls can not be removed from a data model. The ordinal position in the
data model array is the handle that identifies a node. If the nulls were
removed, the location in the array would change, causing any saved handles
to now point to different nodes. Each node has a 'children' array which
contains the handle of the nodes which are children of this one. If you were
to remove an element of the array, all of those children handles would be
off by one. That would be bad. The wrong nodes would now be displayed as
children.
If you are doing lots and lots of pruning, you might consider writing a
different data model class that handled references to other nodes
differently, so that deletions could actually remove the element from the
array.
I hope that makes more sense to you now.
Derrell
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