Thanks for your suggestion.. I tried to use this method but for some reason
when checking a childnode the event is not firing. I seem to have found an
alternate way to do this by adding the checkchange listener directly to my
treepanel and then using the ID property to get the name of the childnode.. but
your method seems much easier. Do you know why my setup might prohibit the
event from firing correctly when checking/unchecking a childnode? Here is my
code.. appreciate your assistance and if I can't do it this way I guess I will
just stick to how I've got it.. works anyway but it's not pretty :)
var layerRoot_Legend = new Ext.tree.TreeNode({
enableDD: true,
loaded: true,
expanded: true
});
var layerTree_Legend = new Ext.tree.TreePanel({
root: layerRoot_Legend,
enableDD: true,
applyLoader: true,
height: 372,
width: 230,
autoScroll: true,
rootVisible: false
}}
//AOIs layerList
layerList_AOIs = new GeoExt.tree.LayerNode({
"layer": layer_AOIs,
"isLeaf": true,
"preloadChildren": true,
"checked": false,
"enableDD": true,
"cls": "rootnode",
"singleClickExpand": true,
"listeners":
{
'checkchange' : function(node, checked)
{
// If a parent node is unchecked, uncheck all the children
if (node.getUI().isChecked()) {
node.expand();
}
if (!node.getUI().isChecked()) {
node.collapse();
}
},
'load' : function(e) {
if (bool_aois == false)
{
//change icon of childNodes to GetLegendGraphic from WMS +
node text attribute
var count = (e.childNodes.length -1);
while (count >= 0)
{
var label = e.childNodes[count].text;
var fixed_label = label.replace(/_/g,' ');
e.childNodes[count].setText("<img
src='http://localhost/WebServices/Request.aspx?request=GetLegendGraphic&version=1.1&format=image/png&style=&layer="+label
+ "'/>" + ' ' +fixed_label);
count -=1;
}
bool_aois = true;
}
else
{
//do nothing
}
}
},
"loader": {
"param": "LAYERS",
baseParams:{
listeners:{checkchange:function(node,checked){
alert('making it here');
}}
}
});
layerRoot_Legend.appendChild(layerList_AOIs);
________________________________
From: Matt Priour [mailto:[email protected]]
Sent: December 28, 2010 10:49 AM
To: Andrew Stewart; [email protected]
Subject: Re: [Users] Capturing Name of childnode clicked
fromGeoExt.tree.LayerNode
You could add this to the loader at the end of your configuration:
...
"loader": {
"param": "LAYERS",
baseParams:{
listeners:{checkchange:function(node,checked){
.... Do Something with checked child node information ....
}}
}
}
'baseParams' are applied to each child node created by the loader.
Matt Priour
Kestrel Computer Consulting
From: Andrew Stewart<mailto:[email protected]>
Sent: Tuesday, December 28, 2010 11:16 AM
To: [email protected]<mailto:[email protected]>
Subject: [Users] Capturing Name of childnode clicked fromGeoExt.tree.LayerNode
I'm sure this can be done but I'm having a hell of a time accomplishing this. I
need to know which childnode has been clicked from my layerNode (which is added
to a layertree root node). Except I am using grouped layers through openlayers
so I am having a hard time pulling out the name of one of these child nodes. Is
there any event I can add to the below code to tell me the name of the
childnode when it is clicked and not the root node? Appreciate any advice.
//AOIs layerList
layerList_AOIs = new GeoExt.tree.LayerNode({
"layer": layer_AOIs,
"isLeaf": true,
"preloadChildren": true,
"checked": false,
"enableDD": true,
"cls": "rootnode",
"singleClickExpand": true,
"listeners":
{
'checkchange' : function(node, checked)
{
// If a parent node is unchecked, uncheck all the children
if (node.getUI().isChecked()) {
node.expand();
}
if (!node.getUI().isChecked()) {
node.collapse();
}
},
'load' : function(e) {
if (bool_aois == false)
{
//change icon of childNodes to GetLegendGraphic from WMS +
node text attribute
var count = (e.childNodes.length -1);
while (count >= 0)
{
var label = e.childNodes[count].text;
var fixed_label = label.replace(/_/g,' ');
e.childNodes[count].setText("<img
src='http://localhost/WebServices/Request.aspx?request=GetLegendGraphic&version=1.1&format=image/png&style=&layer="+label
+ "'/>" + ' ' +fixed_label);
count -=1;
}
bool_aois = true;
}
else
{
//do nothing
}
}
},
"loader": {
"param": "LAYERS"
}
});
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