Hi list,
i use treefullcontrol in my app. and it has a few "columns"(images as
well as text) to display some status information of the tree
folders/files. I become my status info from the backend approx. 5 times
per minute so i have to update my tree(mainly columns text/image -
rarely folder/files) and i'm searching for the efficient way to do this.
The brutal way is to delete the tree and build it again, but it costs to
much CPU resources and can take some seconds. So i'm looking for a
better way to update my treefullcontrol.
Any help is appreciated,
You have to "find" the widgets in your tree. Then, setIcon is an easy task.
1. add to your TreeFolder-Objects an unique Name as pathpart
2. run every level to find the specific item (see code)
3. item.setIcon(...), qx.ui.core.Widget.flushGlobalQueues();
Tip: Do not add and remove treeitems without flush the queues, there is
an error in the qooxdoo class qx.core.Parent.
Bye, Christian.
Thank you for your help, Christian. The idea with subpath looks rather
elegant(i solved this by adding a unique id to all tree-nodes and
recursive going through the tree until i find the node with the right
one). Subpath solution should be quicker.
My second problem is "setIcon". I'm not sure how to do this, because my
node rows has a few columns like:
+Folder statusImage1 infoText1 statusImage2 infoText2
|
--File statusImage1 infoText1 statusImage2
infoText2
and i don't really know how to replace infoText or statusImage in the
File/Folder without deleting them. Or is it better to remove the node,
build it again and add at current position?
/**
* Find in the qxTree the Folder-item pointed with subPath.
*
* @param {String} subPath the subPath in the qxFolderTree
* @param rootTree {Container-Object}
* @param {Boolean} openOnTheFly
* @return {qx.ui.treefullcontrol.FolderTree}
*/
qx.Proto._getQxSubTree = function(subPath, rootTree, openOnTheFly) {
var pathList = subPath.split("/");
var run = rootTree;
for (var i=0; i<pathList.length; i++) {
var childs = [];
if (run.getContainerObject()){
childs = run.getContainerObject().getChildren();
}
for (var j=0; j<childs.length; j++) {
var item = childs[j];
var usrData = item.getUserData('path_part');
if (usrData == pathList[i]) {
//this.debug("SearchOk: "+usrData);
run = childs[j];
if (openOnTheFly){
//... setSelectedElement doesn't do that.
run.open();
}
break;
}
}
}
return run;
};
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