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Small but useful little Features for jqGrid 3.8.1

03/12/2010
14:41

Klaus

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Forum Posts: 68

Member Since:
18/11/2009

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Hello Tony,

here are 2 little features (incl. Source for simple insert) I would like to have in jqGrid:

Feature 1) additional callback for AJAX requests done by grid: ajaxComplete
... to be able to do some custom code (e.g. for custom instrumentation/ speed measurements) directly at AJAX function success callback is called:

var p = $.extend(true,{
...
ajaxComplete: null, // added callback to global options (default null)

...

populate = function (npage) {
...
case "script":
    $.ajax($.extend({
      url:ts.p.url,
      type:ts.p.mtype,
      dataType: dt ,
      data: $.isFunction(ts.p.serializeGridData)? ts.p.serializeGridData.call(ts,ts.p.postData) : ts.p.postData,
      success:function(data,st) {
        if($.isFunction(ts.p.ajaxComplete)) { ts.p.ajaxComplete.call(ts,data,st); }   // invoke callback in AJAX success function (at the top)
        if(dt === "xml") { addXmlData(data,ts.grid.bDiv,rcnt,npage>1,adjust); }

...

Feature 2) additional option for the "loadui"-loading indicator ("delay")
I'm using automatic updates for my grid reloading the data every x seconds from the server. 90% of the requests are really fast so I don't want to show a loading-indicator which will be displayed so short that's only flickering, but in the other 10% of the table reloads the user should be notified that the reload might take longer ... display loading.
So I implemented another option for the "loadui" setting ... "delay" which shows the loading-indicator not before a defined delay of e.g. 500msec ... maybe this value should be also defined as global option.

/* add global "delay" loading function to show loading indicator not immediately but after a short delay */
           lateShowLoading: function() {
               if (grid.loadingTimer) { clearTimeout(grid.loadingTimer); }
               grid.loadingTimer = null;
               $("#load_"+ts.p.id).show();
           },

beginReq = function() {
           ts.grid.hDiv.loading = true;
           if(ts.p.hiddengrid) { return;}
           switch(ts.p.loadui) {
               case "disable":
                   break;
               case "enable":
                   $("#load_"+ts.p.id).show();
                   break;

               case "delay":         /* added "delay" loading indicator option */
                   grid.loadingTimer = setTimeout(grid.lateShowLoading, 500);
                   break;

               case "block":
                   $("#lui_"+ts.p.id).show();
                   $("#load_"+ts.p.id).show();
                   break;
           }
       },
       endReq = function() {
           ts.grid.hDiv.loading = false;
           switch(ts.p.loadui) {
               case "disable":
                   break;
               case "enable":
                   $("#load_"+ts.p.id).hide();
                   break;

               case "delay":       /* added "delay" loading indicator option */
                   if (grid.loadingTimer) {
                       clearTimeout(grid.loadingTimer);
                       grid.loadingTimer = null;
                   }
                   $("#load_"+ts.p.id).hide();
                   break;

               case "block":
                   $("#lui_"+ts.p.id).hide();
                   $("#load_"+ts.p.id).hide();
                   break;
           }
       },

Maybe you could integrate these features into the next jqGrid version.

Kind regards,
Klaus.

03/12/2010
14:45

Klaus

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Forum Posts: 68

Member Since:
18/11/2009

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here is one more: ... to be able to pass the "modal"-option as option to the column chooser dialog ...

columnChooser : function(opts) {
           ...
           "dlog_opts" : function(opts) {
                var buttons = {};
                buttons[opts.bSubmit] = function() {
                    opts.apply_perm();
                    opts.cleanup(false);
                };
                buttons[opts.bCancel] = function() {
                    opts.cleanup(true);
                };
                return {
                    "buttons": buttons,
                    "close": function() {
                        opts.cleanup(true);
                    },
                   "modal" : opts.modal,    // CHANGED: pass along the modal option
                    "resizable": false,
                    "width": opts.width+20
                };

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