/
visualization-piechart.js
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/
visualization-piechart.js
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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import Nvd3ChartVisualization from './visualization-nvd3chart';
import PivotTransformation from '../../tabledata/pivot';
/**
* Visualize data in pie chart
*/
export default class PiechartVisualization extends Nvd3ChartVisualization {
constructor(targetEl, config) {
super(targetEl, config);
this.pivot = new PivotTransformation(config);
}
type() {
return 'pieChart';
}
getTransformation() {
return this.pivot;
}
render(pivot) {
// [ZEPPELIN-2253] New chart function will be created each time inside super.render()
this.chart = null;
const d3Data = this.d3DataFromPivot(
pivot.schema,
pivot.rows,
pivot.keys,
pivot.groups,
pivot.values,
true,
false,
false);
const d = d3Data.d3g;
let generateLabel;
// data is grouped
if (pivot.groups && pivot.groups.length > 0) {
generateLabel = (suffix, prefix) => `${prefix}.${suffix}`;
} else { // data isn't grouped
generateLabel = (suffix) => suffix;
}
let d3g = d.map((group) => {
return group.values.map((row) => ({
label: generateLabel(row.x, group.key),
value: row.y,
}));
});
// the map function returns d3g as a nested array
// [].concat flattens it, http://stackoverflow.com/a/10865042/5154397
d3g = [].concat.apply([], d3g); // eslint-disable-line prefer-spread
super.render({d3g: d3g});
}
/**
* Set new config
*/
setConfig(config) {
super.setConfig(config);
this.pivot.setConfig(config);
}
configureChart(chart) {
chart.x(function(d) {
return d.label;
})
.y(function(d) {
return d.value;
})
.showLabels(false)
.showTooltipPercent(true);
}
}