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34 lines
912 B
JavaScript
34 lines
912 B
JavaScript
import {changeset, isChangeSet} from 'vega-dataflow';
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import {error, hasOwnProperty, truthy} from 'vega-util';
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export function dataref(view, name) {
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var data = view._runtime.data;
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if (!hasOwnProperty(data, name)) {
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error('Unrecognized data set: ' + name);
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}
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return data[name];
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}
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export function data(name, values) {
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return arguments.length < 2
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? dataref(this, name).values.value
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: change.call(this, name, changeset().remove(truthy).insert(values));
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}
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export function change(name, changes) {
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if (!isChangeSet(changes)) {
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error('Second argument to changes must be a changeset.');
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}
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var dataset = dataref(this, name);
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dataset.modified = true;
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return this.pulse(dataset.input, changes);
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}
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export function insert(name, _) {
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return change.call(this, name, changeset().insert(_));
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}
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export function remove(name, _) {
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return change.call(this, name, changeset().remove(_));
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}
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