topic Re: Geoprocessing Widget help in Web AppBuilder Custom Widgets Questions

Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 15:24:24 GMT

Geoprocessing Widget "hangs" if nothing is selected before hitting "Execute" button.

Sorry for cross-post, I'm not getting any response in the other forum https://community.esri.com/thread/183807-gp-widget-hangs

The current implementation is actually working just fine! However, I am not sure where to look or if it's possible to make an adjustment in the GP widget itself to help alleviate this problem. If the user doesn't select any features before hitting "Execute" on the widget, it seems to become unresponsive, however it does finally clear itself and returns to normal after a couple of minutes.

This behavior will confuse users who will be very click-happy and exclaim the application is broken. I am hoping that there is a simple tweak I can apply to the widget itself to account for nothing being selected and perform a quick exit out of process.

This is the standard Geoprocessing widget that acquires a Feature Set (the selection) and uses that as an input parameter.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 18:10:30 GMT

James,

It should be easy enough to disable the execute button until a selection is made in the widget but I don't have a GP to test with.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 18:17:11 GMT

Does the GP service you need to test against have to accept that Feature Set parameter? Or can it be just some basic GP service that doesn't do much of anything?

I'm asking because this particular GP service is actually behind our firewall since it's performing edits/inserts on a Feature Class in one of our SDE databases. But if you just need an endpoint to set the widget to, can't you just enter anything?

Thanks a bunch!

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 18:34:44 GMT

James,

It would have to be a GP that takes a Feature Set as input. The GP widget builds the UI based on the GP service and it's parameters.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 18:45:56 GMT

Sending you a PM with a GP service url to test with.

Thanks a ton.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 19:09:55 GMT

James you can send it now.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 19:18:12 GMT

Sent!

The messenger tool is flakey so look for the second PM.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 19:37:23 GMT

James,

It was even easier than I thought... Just open the config_Geoprocessing.json from your app and change the inputParams > required to true then when the execute button is clicked a message pops up saying "blank is Required" Where blank is the name of the input parameter.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 19:44:55 GMT

I'll give it a go.

Super appreciative, Robert. Thanks a bunch!

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 19:51:22 GMT

Here's one issue: if the user actually selects a service layer from the widget's drop-down list but does not make a selection in the map and hits "Execute", then it will become unresponsive.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 20:02:06 GMT

James,

You have a dropdown and a draw toolbar?.. When I configure the widget using your service I get the option to choose one or the other.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 20:11:48 GMT

Yes!

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Sun, 12 Dec 2021 09:01:04 GMT

James,

Seems how I can not get the same UI you are using this is what I can come up with:

Open the apps Geoprocessing widgets folder and edit the Widget.js. Make this change to the executeGP function (lines 5 - 12):

    executeGP: function(){
      this._clearLastResult();
      html.addClass(this.exeNode, 'jimu-state-disabled');
      this._getInputParamValues().then(lang.hitch(this, function(inputValues){
        if(!inputValues || !inputValues.inFS || !inputValues.inFS.features || inputValues.inFS.features.length === 0){
          var errorMessage = "Some message you want to tell your user";
          new Message({
            message: errorMessage
          });
          html.removeClass(this.exeNode, 'jimu-state-disabled');
          return;
        }
        this._showLoading();

        if(this.config.isSynchronous){
          this.gp.execute(inputValues);
        }else{
          this.gp.submitJob(inputValues);
        }
        this.tab.selectTab(this.nls.output);
      }), lang.hitch(this, function() {
        html.removeClass(this.exeNode, 'jimu-state-disabled');
      }));
    },‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 20:24:26 GMT

I will implement that suggestion!

Also: I think if you add a map service to your WAB source web map and make that service layer visible with the Legend Widget, you will then get both the drop-down and the draw/trash can tools to show!

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 20:25:53 GMT

Nope tried that.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 20:42:31 GMT

Thanks again Robert!

I'm still experiencing the unresponsiveness of the widget as described. Do you think there is some other condition that's not included in your suggestion that isn't causing it to be invoked?

if (!inputValues || !inputValues.inFS || !inputValues.inFS.features || inputValues.inFS.features.length === 0)‍

I'll dabble as well even though I'm not fully involved in this level of dev, I can make some additional attempts with the suggestion you provided. Greatly appreciate it!

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 21:04:27 GMT

James,

It is hard to say without being able to exactly reproduce your GP widgets UI. Is the GP service url you sent missing some input parameter requirement that yours uses? I need to be able to reproduce your widget UI as the code I provided is working fine for preventing un-reponsiveness on my end with the service url you provided.

Re: Geoprocessing Widget help

JamesCrandall — Mon, 03 Oct 2016 21:10:42 GMT

Hi Robert -- that test GP service I sent you has the same input/output params as the real one I have pointing to the app. It's very simple: an input FeatureSet and an output string. I even reset the widget in my test WAB to point to the same service I send you and I get the same behavior.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Mon, 03 Oct 2016 21:33:19 GMT

James,

OK, I see the issue now. I had to select a point layer from the map then I get the rectangle draw tool. If you do not select any points on the map then the whole layer is sent as the input. So it looks like I need to find a way to verify that there is a selection on the chosen layer from the drop down. I'll get back to on this.

Re: Geoprocessing Widget help

RobertScheitlin__GISP — Sun, 12 Dec 2021 09:01:07 GMT

James,

here is the solution:

Geoprocessing\editors\SelectFeatureSetFromLayer.js (comment out lines 8 - 19 and add 20):

    getGPValue: function(){
      var def = new Deferred();

      this.spatialFilterByFeatures.getFeatureSet(true).then(lang.hitch(this, function(featureSet){
        def.resolve(featureSet);
      }), lang.hitch(this, function(err){
        if(err && err.type === SpatialFilterByFeatures.NONE_SELECTED_FEATURES_NOT_DRAW_SHAPES){
          // var layer = this.spatialFilterByFeatures.getSelectedLayer();
          // if(layer && layer.url){
          //   var query = new Query();
          //   query.where = '1=1';
          //   layer.queryFeatures(query).then(lang.hitch(this, function(response){
          //     def.resolve(response);
          //   }), lang.hitch(this, function(error){
          //     def.reject(error);
          //   }));
          // }else{
          //   def.reject(err);
          // }
          def.resolve(null);
        }else{
          def.reject(err);
        }
      }));

      return def;
    };‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍