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// widget_jsontable.ysl2

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template "widget[@type='JsonTable']", mode="widget_class"

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    class JsonTableWidget extends Widget{

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        on_click(evt) {

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            const query = {

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                 offset: '42',

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                 filter: '*powerloss*',

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                 args: this.args

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            };

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            const options = {

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                 method: 'POST',

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                 body: JSON.stringify(query),

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                 headers: {'Content-Type': 'application/json'}

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            }

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            fetch(this.args[0], options)

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                .then(res => res.json())

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                .then(res => console.log(res));

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        }

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        init() {

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            this.element.setAttribute("onclick", "hmi_widgets['"+this.element_id+"'].on_click(evt)");

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        }

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    }

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    ||