Ok I did it in a different spot after my TreePanel was actually rendered and it works, was able to expand the node and uncheck a childnode then collapse it, although I'm not sure if this is the best way to do this.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andrew Stewart Sent: November 18, 2010 4:11 PM To: [email protected] Subject: Re: [Users] Displaying single legend items when the layer is a group layer comprised of several layers I am having a slight issue with the LayerNode setup. Unfortunately I need to have some layers not displayed during load of the map, but using the below code all layers are automatically checked. When I try the code layerList_Base.expand(); so that I can uncheck one of the child nodes I get the following error - Message: 'insertAdjacentHTML' is null or not an object Line: 7 Char: 5686 Code: 0 URI: ext-3.3.0/ext-all.js Is there a better way for me to uncheck one of these layers or something I can do to correct this error? I just need to be able to make a few of these layers not displayed so they are unchecked during load.. Appreciate any help! // Base Group Layers var layer_Base = new OpenLayers.Layer.WMS("Base", "http://localhost/WebService/Request.aspx";, { layers: ['Rural_Lot_Line', 'Rural_Block_Line', 'Section_Lines', 'Linear_Parks', 'School_Sites', 'Recreation_Sites', 'Neighbourhood_Parks', 'Major_Parks', 'Neighbourhood_Boundary', 'Neighbourhood_Area__clear_', 'Hydrology', 'City_Boundary', 'Street_Secondary_Segment', 'Street_Segment', 'Arterial', 'Highway', 'Rural_Highway', 'Bridge'], VERSION: "1.1.1", format: 'image/png', transparent: true }, { isBaseLayer: false, singleTile: true, buffer: 4 } ); layerList_Base = new GeoExt.tree.LayerNode({ "layer": layer_Base, "isLeaf": false, "checked": false, "cls": "rootnode", "nodeType": "gx_layer", "loader": { "param": "LAYERS" } }); -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andrew Stewart Sent: November 18, 2010 2:39 PM To: 'Andreas Hocevar' Cc: [email protected] Subject: Re: [Users] Displaying single legend items when the layer is a group layer comprised of several layers Thank you very much! I was looking at this before and could not get it to work.. But your provided example code was exactly enough to get me going.. The problem I was doing before was when defining my layers I wasn't seperating them by 'layer name', 'layer name' .. I had them all individually inside only one 'layer name, layer name' but when I put quotes around each one and seperated them by comma it works perfectly, thanks again! -----Original Message----- From: Andreas Hocevar [mailto:[email protected]] Sent: November 18, 2010 2:26 PM To: Andrew Stewart Cc: [email protected] Subject: Re: [Users] Displaying single legend items when the layer is a group layer comprised of several layers Hi, you may want to have a look at http://geoext.org/lib/GeoExt/widgets/tree/LayerParamLoader.html. For your layer_Base layer, the tree node configuration could look like this: layerList_Base = new GeoExt.tree.LayerNode({ "layer": layer_Base, "isLeaf": false, "loader": { "param": "LAYERS" } }); Regards, Andreas. On Nov 18, 2010, at 22:09 , Andrew Stewart wrote: > Is this possible to display each individual item so I can still check/uncheck > them using my below code, or can I use a different GeoExt/Ext container to > accomplish this? I need to keep the layers grouped because of performance but > I still need to be able to display each individual layer so that I can turn > them on/off. Is this possible? Any example/help immensely appreciated. > > > My layer group is declared as the following - > > // Base Group Layers > var layer_Base = new OpenLayers.Layer.WMS("Base Layers", > "http://localhost/WebService/Request.aspx";, > { > layers: > ['Bridge,Rural_Highway,Highway,Arterial,Street_Segment, > Street_Secondary_Segment, City_Boundary, > Hydrology,Neighbourhood_Area__clear_,Neighbourhood_Boundary,Major_Parks,Neighbourhood_Parks,Recreation_Sites,School_Sites,Linear_Parks,Section_Lines,Rural_Block_Line,Rural_Lot_Line'], > VERSION: "1.1.1", > transparent: true > }, > { isBaseLayer: false, > singleTile: true, > buffer: 4 > } > ); > > > Then I define my Treenode root and treepanel, and create a GeoExt > LayerContainer to load the layer into the root node. Can the layers above be > displayed as individual items with separate checkboxes somehow? > > var layerRoot_Legend = new Ext.tree.TreeNode({ > enableDD: true, > text: "All Legend Items", > loaded: true, > expanded: true > }); > > var layerTree_Legend = new Ext.tree.TreePanel({ > title: '', > root: layerRoot_Legend, > enableDD: true, > applyLoader: true, > rootVisible: false > }); > > > //Base layerList > layerList_Base = new GeoExt.tree.LayerContainer({ > text: 'Base', > layerStore: mapPanel.layers, > leaf: false, > enableDD: true, > cls: 'rootnode', > singleClickExpand: true, > expanded: false, > checked: false, > listeners: { > 'checkchange' : function(node, checked) > { > // If a parent node is unchecked, uncheck all the children > if (node.getUI().isChecked()) { > node.expand(); > node.eachChild(function(child){ > child.ui.toggleCheck(true); > }); > } > if (!node.getUI().isChecked()) > { > node.expand(); > node.eachChild(function(child) { > child.ui.toggleCheck(false); > }); > } > } > }, > loader: > { > filter: function(record) > { > if (record.data.title == 'Base Layers') > return true; > } > } > }); > > > layerRoot_Legend.appendChild(layerList_Base); > > > > > > > > This e-mail is intended for the original recipient(s) only. If you have > received it in error, please advise the sender and delete this message. > > _______________________________________________ > Users mailing list > [email protected] > http://www.geoext.org/cgi-bin/mailman/listinfo/users -- Andreas Hocevar OpenGeo - http://opengeo.org/ Expert service straight from the developers. [This message has been scanned for security content threats and viruses.] [The City of Red Deer I.T. Services asks that you please consider the environment before printing this e-mail.] _______________________________________________ Users mailing list [email protected] http://www.geoext.org/cgi-bin/mailman/listinfo/users [This message has been scanned for security content threats and viruses.] [The City of Red Deer I.T. Services asks that you please consider the environment before printing this e-mail.] _______________________________________________ Users mailing list [email protected] http://www.geoext.org/cgi-bin/mailman/listinfo/users [This message has been scanned for security content threats and viruses.] [The City of Red Deer I.T. Services asks that you please consider the environment before printing this e-mail.] _______________________________________________ Users mailing list [email protected] http://www.geoext.org/cgi-bin/mailman/listinfo/users
