[fusion-users] Get layer name from Legend right-click

[Mike Adair]

Tom,

It depends on where you are writing this code, but in Legend.js, there 
is createTreeItem (which has a reference to a layer object) and then 
calls getContextMenu() to retrieve a context menu object.  YOu may need 
to pass in the layer object to that method.  Is this what you mean?

Mike



Tom van der Putte wrote:
>
> Hi Mike,
>
> Thanks for the explanation, so far I think I understand.
> What I meant was the following:
>
> I can't figure out where I can get the layer variable from (containing 
> the layer or layername that was right-clicked). You're passing the 
> layer variable, but how do you get it to contain the right layer. 
> Thats the main issue here. To simplify my problem:
>
> I have a context menu for the legend, containing an item: 'alert layer 
> name', which functionality would be to do just that. I'd add these to 
> lines to the Legend.Legendrenderer.
>
> this.alertLayernameAction= new 
> Jx.Action(OpenLayers.Function.bind(alert( lyrName),null)); // (or 
> something like that?)
> this.alertLayer= new Jx.MenuItem(this.executeRasterQueryAction, 
> {label:OpenLayers.i18n('alert layer name')});
>
> My issue her is where do I get lyrname from? Is the name of the node 
> that was right-clicked available somewhere?
>
> Hope this is clearer, thanks so much!
>
> Tom
>
> On Thu 15/04/10 17:25 , Mike Adair madair at dmsolutions.ca sent:
>
>     Tom,
>
>     Then your getRasterQuery method would look like:
>
>     function getRasterQuery(layer) {
>     var temp = layer.name;
>     ...
>     }
>
>     For the OpenLayers.Function.bind method, the first arg is the
>     method to
>     be bound, the second arg is the object to bind to (object will be
>     'this'
>     inside the method), and then the rest of the arguments will be
>     passed to
>     the bound method as arguments.
>
>     Mike
>
>
>     Tom van der Putte wrote:
>     > Hi Mike,
>     >
>     > I was trying your solution, but I'm still a bit confused.
>     >
>     > This is my current code (within Legend.LegendRenderer)
>     >
>     > this.executeRasterQueryAction = new
>     > Jx.Action(OpenLayers.Function.bind(this.getRasterQuery, this));
>     > this.executeRasterQueryItem = new
>     > Jx.MenuItem(this.executeRasterQueryAction, {label:
>     > OpenLayers.i18n('Execute raster query')});
>     >
>     > According to your explanation, the first line should then be:
>     >
>     > this.executeRasterQueryAction = new
>     > Jx.Action(OpenLayers.Function.bind(this.getRasterQuery, this,
>     layer));
>     >
>     > Or am I wrong here? But how do I get the reference to the layer
>     thats
>     > clicked? Does that make sense what I'm saying? :) I'm not really
>     into
>     > the whole binding stuuf yet. Getting there though...
>     >
>     > Cheers,
>     > Tom
>     >
>     >
>     >
>     > On Thu 15/04/10 15:52 , Mike Adair madair at dmsolutions.ca
>     <javascript:top.opencompose('madair at dmsolutions.ca','','','')> sent:
>     >
>     > Tom,
>     >
>     > The menu items are only bound to the legend tree items/folders at
>     > this
>     > point. I think what you would need to do is bind whatever object you
>     > need when setting up your onclick event, eg. the existing code
>     > looks like:
>     > onClick:
>     > OpenLayers.Function.bind(this.collapseBranch, this, this.oRoot)
>     >
>     > but you probably want:
>     >
>     > onClick:
>     > OpenLayers.Function.bind(this.collapseBranch, this, this.oRoot,
>     layer)
>     >
>     > (or similar) and then in the method being bound, layer will appear as
>     > one of the arguments.
>     >
>     >
>     > Mike
>     >
>     >
>     > Tom van der Putte wrote:
>     > > Hi All,
>     > >
>     > > When right-clicking an item in the legend, a context manu appears.
>     > > I've added a entry to this menu, and clicking on it results in a
>     > > certain function beeing executed. However, I want to check if the
>     > item
>     > > that was right-clicked in the legend is of a certain type. How
>     can I
>     > > get to the layer name? I found something like targetFolder in the
>     > > legend widget, but this obviously goes only for the folders?
>     > >
>     > > Cheers,
>     > >
>     > > Tom
>     > >
>     ------------------------------------------------------------------------
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>     > --
>     > Michael Adair
>     > Senior Software Architect
>     > DM Solutions Group Inc.
>     >
>     > Office: (613) 565-5056 x26
>     > madair at dmsolutions.ca
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>
>     -- 
>     Michael Adair
>     Senior Software Architect
>     DM Solutions Group Inc.
>
>     Office: (613) 565-5056 x26
>     madair at dmsolutions.ca
>     <javascript:top.opencompose('madair at dmsolutions.ca','','','')>
>     http://www.dmsolutions.ca
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>
>
>

-- 
   Michael Adair
   Senior Software Architect
   DM Solutions Group Inc.

   Office: (613) 565-5056 x26
   madair at dmsolutions.ca
   http://www.dmsolutions.ca
   http://research.dmsolutions.ca