Grid resize() bug fix; Styling changes

Any action that resized the Query Results grid, removed the click event
from the zoom Image nodes.  EnhancedGrid lacks eventing for resize() to
reattach the click events.  Implemented on.selector and set the event
handler to the grid itself to fix the issue.

Updated Row header width, and removed Zoom To column name, as well as
shortened the zoom column width.

Author: Stephen Sporik

basicviewer/src/modules/core/query/querying.js

@@ -390,7 +390,7 @@ define(["dojo/_base/declare", "dijit/_WidgetBase", "dojo/dom", "dojo/json", "dij
                         this._identifierVar = results.objectIdFieldName;
                         /*set up layout*/
                         //set first column to magnifying glass icon
-                        layout.push({'name': "Zoom To", 'field': "", 'formatter': lang.hitch(this, "_renderCell"), 'sort': false});
+                        layout.push({'name': "", 'field': "", 'formatter': lang.hitch(this, "_renderCell"), 'width': '22px'});
 
 
                         for (var j = 0; j < results.fields.length; j++) {
@@ -419,9 +419,10 @@ define(["dojo/_base/declare", "dijit/_WidgetBase", "dojo/dom", "dojo/json", "dij
                             structure: layout,
                             autoHeight: true,
                             autoWidth: true,
-                            rowSelector: '20px',  //width of the row selector at the beginning of a row
+                            selectionMode: 'single',
+                            rowSelector: '1px',  //width of the row selector at the beginning of a row
                             canSort: function(colIndex){
-                                return colIndex != 0;
+                                return colIndex != 0; //don't allow the first column (zoom to) to be sortable
                             },
                             plugins: {
                                 exporter: true,
@@ -434,6 +435,14 @@ define(["dojo/_base/declare", "dijit/_WidgetBase", "dojo/dom", "dojo/json", "dij
                             }
                         });
 
+                        //set a click event listener on the grid to catch elements within it with the css class "zoomImg"
+                        //the magnifying glass images added to the cell during row formatting are given the class "zoomImg"
+                        //setting this on the grid, and not individual image nodes prevents resizing the grid from removing
+                        //the click event.
+                        on(this._resultsGrid, on.selector(".zoomImg", "click"), lang.hitch(this, function(e){
+                            this._zoomToFeature(e);
+                        }));
+
                         //for exporting all rows of query results
                         function exportAll() {
                             dijit.byId("grid").exportGrid("csv", function (str) {
@@ -563,14 +572,10 @@ define(["dojo/_base/declare", "dijit/_WidgetBase", "dojo/dom", "dojo/json", "dij
                         fpI.show();
 
                         //Grid does not draw correctly on first show of floating pane, call resize after pane is open to make sure grid fits its container correctly.
+                        //(This probably is doubled edged by product of using the EnhancedGrid inside a Floating Pane.)
                         //Must add click event to icon AFTER the resize event, or the handle to the click event is lost.
                         var ti = setTimeout(lang.hitch(this, function(){
                             this._resultsGrid.resize();
-                            //Use dojo/query to set a click event for all elements in the class "zoomImg",  this enables using dojo/on for all elements at once.
-                            //this must be done AFTER the grid is rendered with results and the zoom icons exist in the DOM.
-                            dojoquery(".zoomImg").on("click", lang.hitch(this, function(e) {
-                                this._zoomToFeature(e);
-                            }));
                         }), 100);
 
                     }	// end if (symbol != null)