topic Re: Widget Communication in Web AppBuilder Custom Widgets Questions

Widget Communication

qiangyan — Sat, 08 Oct 2016 07:41:23 GMT

how I use "publishData" and "onReceiveData" .

I use the samplewidgets WidgetCommunication(WidgetA,WidgetB)

when I click publish Data ,there was a mistake.

Does anybody have this working, and have any advice for me?

Re: Widget Communication

qiangyan — Sat, 08 Oct 2016 07:43:12 GMT

code:

Re: Widget Communication

RobertScheitlin__GISP — Sun, 12 Dec 2021 09:46:22 GMT

Qiang,

Sure I have it working is several of my widgets.

In my eSearch widget I have a function like this (line 3):

      _initDrawBox: function () {
        aspect.before(this.drawBox, "_activate", lang.hitch(this, function(){
          this.publishData({message: "Deactivate_DrawTool"});
        }));‍‍‍‍

In my other widgets that I want to listen I have:

      startup: function(){
        this.inherited(arguments);
        this.fetchData();
        this.list.parentWidget = this;
      },‍‍‍‍‍

      onReceiveData: function(name, widgetId, data) {
        if(data.message && data.message === "Deactivate_DrawTool"){
          this.drawBox.deactivate();
        }
      },‍‍‍‍‍‍‍‍‍‍‍

If the widget is not open when the other widget publishes data then you have to call fetchData when the widget does start so that it looks for the data and calls the onRecieveData method.

I am not sure why you are having that error you are showing though.

Re: Widget Communication

qiangyan — Tue, 15 Nov 2016 08:13:08 GMT

thanks for your replay. it woks use your code.

Re: Widget Communication

RobertScheitlin__GISP — Tue, 15 Nov 2016 14:00:22 GMT

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