Hi,
i was more or less trying to reproduce the json / tree example from the demo
site with very few little modifications and figured out that even on the
online example the "changeSelection" event is being fired three times when i
click a node on the tree.
Is this a Bug or is this on purpose and if so, what's the purpose?
I want to attach some functions to the changeSelection even of the tree but
I don't want those functions to be called three times.
I would like to keep my prototypes as simple as possible.
After I realized the json/tree controller solution fires several times i
filled a tree manually with treefolder objects and checked if the resulting
tree also fires its changeSelection events three times - but it was good and
fired only *one* event.
Now what would I have to do? Do my own Model/Delegate solution? I already
started that, but for the moment the code below would do it to me as long at
it wouldn't fire events too many times.
My current code:
/**
* @author phill54
*/
qx.Class.define("jsonTreeTest.TreeModelTest",
{
extend : qx.core.Object,
construct : function () {
var tree = new qx.ui.tree.Tree().set({
selectionMode : "one",
hideRoot : false,
rootOpenClose : true,
width: 400,
height: 300
});
var controller = new qx.data.controller.Tree(null, tree,
"kids", "name");
controller.setIconPath("iconpath");
var url = "http://phill54/datasource/tree.json.php";;
var store = new qx.data.store.Json(url);
store.bind("model", controller, "model");
controller.bind("model", store, "model");
tree.addListener("changeSelection", function(ev) {
/* this function is executed three times on click on a
node*/
var data = ev.getData();
console.log("typeof:\t\t\t" + typeof(data[0]));
console.log("length:\t\t\t" + data[0].length);
/* this function shows me the label/name of the
selected node
it turns out that the changeSelection gets fired 3
times:
1st time: event data gives me the previously selected
tree node
2nd time: event data gives me the currently selected
tree node
3rd time: event data gives me the currently selected
tree node again
(!!!)
*/
console.log(data[0].getModel().getName());
}, this);
store.addListener("loaded", function(ev) {
tree.getRoot().setOpen(true);
}, this);
qx.core.Init.getApplication().getRoot().add(tree, {top: 10,
left: 10});
},
destruct : function () {
},
properties : {
},
members : {
}
});
--
View this message in context:
http://n2.nabble.com/Json-Store-Tree-Controller-changeSelection-event-gets-fired-three-times-per-click-tp4107042p4107042.html
Sent from the qooxdoo mailing list archive at Nabble.com.
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