HSLayers.Control.Query
======================
`HSLayers.Control.Query
<http://www.bnhelp.cz/wwwlibs/hslayers/3.0/doc/symbols/HSLayers.Control.Query.html>`_: user can click in the map and every MapServer or WMS layer is queried and results are rendered into some div or `OpenLayers.Popup`.

Query tool is able to parser text, html, xml or GML (both MapServer and
ArcIMS). 

.. code-block:: javascript

        // let's define some example query
        var query = new HSLayers.Control.Query({
                    horizontal:false,
                    container:this.mapViewer.infoPanel,
                    displayClass: "hsControlQuery",
                    scope:this,
                    
                    onInfo: function() {
                            this.mapViewer.toolsPanel.activate(1);
                            var features = HSLayers.Util.geoMicroformatParser(this.mapViewer.infoPanel.body.dom,this.origProjection,this.map.getProjection()); 
                            this.addFeaturesToMap(features);
                        }
                    });

        // register some events
        query.events.register("beforeQuery",this,function(){this.mapViewer.toolsPanel.activate(1),this.mapViewer.infoPanel.maskOn();});
        query.events.register("afterQuery",this,function(){this.mapViewer.infoPanel.maskOff();});
        this.mapToolBar.addControls([query]);

        pane.addControls([query]);