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widget.js
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widget.js
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var NumberWidget = function(config) {
var widget = {
plugin: 'generic',
widgetType: 'number',
datasourceId: config.datasourceId,
displayName: config.displayName,
fieldName: config.fieldName,
value: 0,
trend: 'stable',
width: config.width,
height: config.height
};
function getTrend(value) {
if (value == widget.value) {
return 'stable';
} else if(value > widget.value) {
return 'increasing';
} else if (value < widget.value) {
return 'decreasing';
}
}
function getNumber(value) {
if (typeof value === 'number' || value instanceof Number) {
return value;
}
return Number(value);
}
function getNumberValue(value) {
var num = getNumber(value);
if (isNaN(num)) {
return 0;
}
return num;
}
widget.update = function(value) {
var val = getNumberValue(value);
widget.trend = getTrend(val);
widget.value = val;
};
return widget;
};
module.exports = NumberWidget;