topic Re: Delete clicked boundary in ArcGIS JavaScript Maps SDK Questions

Delete clicked boundary

rsharma — Thu, 30 Apr 2020 10:20:34 GMT

Hi,

I want to know how to delete that boundary or polygon which is doubleclicked.

I know we can do it like this, but how to know that which polygon got clicked so that i ll get its graphics.

My polygons coming from db and i am createing new polygons also. found this link,

But don't know how it works for 4.14

Selecting and removing graphic (by rings array) in ArcGIS JSapi 3.x

Robert Scheitlin, GISP‌ u have answered the above question, is their any otherway, i can delete my editable polygons one at a time

graphicslayer.remove(gra);

Re: Delete clicked boundary

RobertScheitlin__GISP — Fri, 01 May 2020 20:17:41 GMT

Rajni,

This should not be difficult for you to figure out. Right now you have one or more view.on click listener functions. Just add a view on dbl click listener and then add the view.hit test logic there (just like you have in the on click event handler).

https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#event-double-click

Re: Delete clicked boundary

rsharma — Mon, 04 May 2020 10:44:00 GMT

Hi Sir,

I tried your way, in console, i get that exact polygon clicked, but i could not able to remove that graphics from map

with graphicslayer.remove method

Am i missing something??

Do i have to use other function.

    view.on("double-click", function(event){
              view.hitTest(event).then(function(response) {
                var results = response.results;
               results.forEach(function(result) {
                if(result.graphic.geometry.type==='polygon'&&result.graphic.layer === sketchViewModel.layer && result.graphic.attributes && result.graphic.attributes.newDevelopment){
                    console.log(result.graphic);
                    graphicslayer.remove(result.graphic);
                  }
                });
              });
           });

Re: Delete clicked boundary

rsharma — Tue, 05 May 2020 10:20:46 GMT

I tried 2 methods, both don't work out, while console return me the exact that polygon that i clicked, but still stucked to delete it.

I want to delete polygons of graphics layer only.

view.on("double-click", function(event){
              view.hitTest(event).then(function(response) {
                var results = response.results;
               results.forEach(function(result) {
                if(result.graphic.geometry.type==='polygon'&&result.graphic.layer === sketchViewModel.layer && result.graphic.attributes && result.graphic.attributes.newDevelopment){
                    console.log(result.graphic);
                   /*graphicslayer.remove(result.graphic);
                  view.graphics.remove(result.graphic);*/
                  }
                });
              });
           });

Re: Delete clicked boundary

RobertScheitlin__GISP — Tue, 05 May 2020 12:36:59 GMT

Rajni,

As a developer you need to figure out if the fact that it is not working in your code is due to any of your other code. So make a simple NEW app that only have the double click delete event listener to test if it work for you there.

Re: Delete clicked boundary

rsharma — Tue, 05 May 2020 12:40:15 GMT

sir my double click listener is running fine, i have consoled and get the boundary clicked as polygon , but i didn't get it how to delete it. Both of these method below not working to delete

/*graphicslayer.remove(result.graphic);
view.graphics.remove(result.graphic);*/

While my console in this code return my clicked polygon as graphic

Re: Delete clicked boundary

RobertScheitlin__GISP — Tue, 05 May 2020 12:43:01 GMT

I don't doubt that you are getting into the listener. But my reply still stands you need to test an app that is devoid of all your other listener events to rule out code overriding each other.

Re: Delete clicked boundary

rsharma — Wed, 06 May 2020 10:06:36 GMT

is their any right click event?as double click bydefault zoom also while deleting.

I searched it, but didn't get any right-click event

Re: Delete clicked boundary

RobertScheitlin__GISP — Wed, 06 May 2020 12:14:35 GMT

Rajni,

No there is no specific event for right click. You have to check the regular click events

https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#event-click

Button property for the right click.

Re: Delete clicked boundary

rsharma — Wed, 06 May 2020 12:26:56 GMT

How to use this property with, no example given with property specified 0,1,2

view.on("click", function(event) {

Re: Delete clicked boundary

RobertScheitlin__GISP — Wed, 06 May 2020 12:28:49 GMT

Rajni,

Seems pretty clear in the documentation.

buttons Number

Indicates the current mouse button state.

Value	Description
0	left click (or touch)
1	middle click
2	right click

Possible Values:0|1|2