[Users] Set visibility on Sub-layers
Andreas Hocevar
ahocevar at opengeo.org
Wed Dec 9 10:08:35 CET 2009
Hi,
I guess the problem is that allItems will be set incorrectly for some
layers. My patch calls onCheckChange when it finds a checked attribute
on the layer node. If this is set to false, it will turn off the layer,
removing the layer from the params. Layers that get created after that
will miss that layer in their allItems array.
I don't have time to look for a solution now, but maybe the information
above is enough for you to figure out one.
Regards,
Andreas.
Paul james wrote:
> Andreas
> I´m testing your patch...
> But I think it isnt working well in a case...
>
>
> I have that Openlayer Layer, the first layer ON and the next 2 OFF:
> new OpenLayers.Layer.MapServer("FederalRoads",
> _cgi, {
> map: _mapfile,
> "LAYERS": [
> 'Layer1ON',
> 'Layer2OFF',
> 'Layer3OFF'
> ],
> transparent: true,
> format: "image/png"
> }, {
> isBaseLayer: false,
> buffer: 0,
> displayInLayerSwitcher: false,
> visibility: true
> })
>
> The TreeView config :
> text: 'Roads',
> expanded : true,
> checked:
> false,
> children:
> [
> {
> nodeType:
> "gx_layerparam",
> layer: "FederalRoads",
> param: "LAYERS",
> item: "Layer1ON",
> text: "FederalRoads1",
> checked: true,
> uiProvider: ...
> },{
> nodeType:
> "gx_layerparam",
> layer: "FederalRoads",
> param: "LAYERS",
> item: "Layer2OFF",
> text: "FederalRoads2",
> checked: false,
> uiProvider: ...
> },{
> nodeType:
> "gx_layerparam",
> layer: "FederalRoads",
> param: "LAYERS",
> item: "Layer3OFF",
> text: "FederalRoads3",
> checked: false,
> uiProvider: ...
> }
> Everthing starts OK... So I deselect Layer1ON and select the other 2
> layers (Layer2 and Layer3)... Thats ok...
> But, when I deselect the last layer in treeview(Layer3OFF), the other
> checkbutton (Layer2OFF) is automatically deselected...
>
> Why ? Is that a bug?
>
> Thanks
>
>
>
>
> On Mon, Oct 19, 2009 at 3:42 PM, Paul james <pauljame at gmail.com
> <mailto:pauljame at gmail.com>> wrote:
>
> Thats great Andreas...
>
> Thanks!
>
> Paul
>
> On Sun, Oct 18, 2009 at 8:28 AM, Andreas Hocevar
> <ahocevar at opengeo.org <mailto:ahocevar at opengeo.org>> wrote:
>
> Paul james wrote:
>
> Ohh no :(
> Any other alternative to solve that?
> ps.: Can you send that ticket url?
>
>
> I was thinking that you create a ticket. But hey, it's FOSS4G
> time and I'm feeling generous, so here it is - even with patch
> and tests:
>
> http://trac.geoext.org/ticket/166
>
> Regards,
> Andreas.
>
> Paul
>
>
> On Wed, Oct 14, 2009 at 11:12 PM, Andreas Hocevar
> <ahocevar at opengeo.org <mailto:ahocevar at opengeo.org>
> <mailto:ahocevar at opengeo.org
> <mailto:ahocevar at opengeo.org>>> wrote:
>
> Andreas Hocevar wrote:
>
> Hi Paul,
>
> the recommendations given so far should all work,
> but let Papa
> Treenode speak from his experience:
>
> The best thing to do is override the createNode
> function of
> the loader, as documented in
>
> http://www.extjs.com/deploy/dev/docs/?class=Ext.tree.TreeLoader.
>
>
> which, unfortunately, will *not* work because GeoExt
> sets the
> visibility in the node's render method, regardless of
> its checked
> attribute. A tickdt with patch that fixes this would be
> in order I
> guess.
>
> Regards,
> Andreas.
>
>
>
>
> The createNode function is called with the
> attributes (attrs)
> as argument, so you could check for attr.text and
> then set
> attr.checked accordingly.
>
> Regards,
> Andreas.
>
> Paul james wrote:
>
> Thanks Matt...
> I tried that:
> nodeType: "gx_layer",
> id: "Streets",
> layer: "Streets",
> isLeaf: false,
> expanded : true,
> loader: {
> param: "LAYERS",
>
> baseAttrs: {
> uiProvider:
> Ext.extend(Ext.tree.TreeNodeUI, {
> render:
> function(bulkRender) {
> if(this.node.text == "Layer3")
>
>
> this.node.layer.setVisibility(false);
>
> Ext.tree.TreeNodeUI.prototype.render.apply(this,
> arguments); }
> ...
> But all node´s layer are set off... How can I
> set the
> subnode´s visibility separately?
> Thanks
> Paul
>
> On Wed, Oct 14, 2009 at 11:50 AM, Matt Priour
> <mpriour at kestrelcomputer.com
> <mailto:mpriour at kestrelcomputer.com>
> <mailto:mpriour at kestrelcomputer.com
> <mailto:mpriour at kestrelcomputer.com>>
> <mailto:mpriour at kestrelcomputer.com
> <mailto:mpriour at kestrelcomputer.com>
>
> <mailto:mpriour at kestrelcomputer.com
> <mailto:mpriour at kestrelcomputer.com>>>> wrote:
>
> Handle the 'render' event of the layer tree and
> programmatically
> uncheck the nodes that you don't want on.
> The only disadvantage of this method is that
> depending
> on timing the
> application may or may not attempt to do GetMap
> requests on the
> layers you don't want. Though they still
> would not be
> visible, if
> you are calling a slow service or complex
> rendering is
> involved,
> then the GetMap requests can block other WMS
> service
> requests.
> Matt Priour
> Kestrel Computer Consullting
> *From:* Paul james
> <mailto:pauljame at gmail.com <mailto:pauljame at gmail.com>
> <mailto:pauljame at gmail.com
> <mailto:pauljame at gmail.com>>>
> *Sent:* Wednesday, October 14, 2009 9:39 AM
> *To:* bartvde at osgis.nl
> <mailto:bartvde at osgis.nl> <mailto:bartvde at osgis.nl
> <mailto:bartvde at osgis.nl>>
> <mailto:bartvde at osgis.nl
> <mailto:bartvde at osgis.nl> <mailto:bartvde at osgis.nl
> <mailto:bartvde at osgis.nl>>>
>
> *Cc:* users at geoext.org
> <mailto:users at geoext.org> <mailto:users at geoext.org
> <mailto:users at geoext.org>>
> <mailto:users at geoext.org
> <mailto:users at geoext.org> <mailto:users at geoext.org
> <mailto:users at geoext.org>>> ;
> Andreas Hocevar
> <mailto:ahocevar at opengeo.org
> <mailto:ahocevar at opengeo.org> <mailto:ahocevar at opengeo.org
> <mailto:ahocevar at opengeo.org>>>
>
> *Subject:* Re: [Users] Set visibility on
> Sub-layers
>
> Thanks bart...
> But I need set all layers to build up my
> treeview, like
> that:
> nodeType: "gx_layer",
> layer: "Streets",
> isLeaf: false,
> loader: {
> param: "LAYERS",
> ...
> On Wed, Oct 14, 2009 at
> 11:16 AM,
> <bartvde at osgis.nl <mailto:bartvde at osgis.nl>
> <mailto:bartvde at osgis.nl <mailto:bartvde at osgis.nl>>
> <mailto:bartvde at osgis.nl
> <mailto:bartvde at osgis.nl> <mailto:bartvde at osgis.nl
> <mailto:bartvde at osgis.nl>>>> wrote:
>
> Hi Paul,
>
> only by using LAYERS: ['layer1', 'layer2'].
>
> Then later on, when you need more
> layers, you
> should change the
> LAYERS
> param using the mergeNewParams function.
>
> Best regards,
> Bart
>
> > Hello guys... I have that set of
> sublayers :
> >
> > new OpenLayers.Layer.MapServer("Streets",
> > _cgi, {
> > map: _mapfile,
> > "LAYERS":
> ['Layer1','Layer2','Layer3','Layer4',
> > 'Layer5'],
> > transparent: true,
> > format: "image/png"
> > }, {
> > isBaseLayer: false,
> > buffer: 0,
> >
> displayInLayerSwitcher: false,
> > visibility: false
> > })
> >
> > I悲 like to start with Layer1 and
> Layer2 with
> visibility true
> ... How can
> > I
> > do that?
> >
> > Paul
> >
> _______________________________________________
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> <mailto:Users at geoext.org>>>
>
> >
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> >
>
>
>
>
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>
>
>
>
>
> -- Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
>
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> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
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--
Andreas Hocevar
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