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csv_d3js.js
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csv_d3js.js
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/*
* This file is part of Invenio.
* Copyright (C) 2015-2019 CERN.
*
* Invenio is free software; you can redistribute it and/or modify it
* under the terms of the MIT License; see LICENSE file for more details.
*/
import d3 from "d3";
import flight from "flightjs";
function CSV_D3JS() {
var CSV_D3JS;
this.tabulate = function(data, target, columns) {
var table = d3
.select(target)
.append("table")
.classed({
table: true,
"table-hover": true,
"table-bordered": true,
});
CSV_D3JS.thead = table.append("thead");
CSV_D3JS.tbody = table.append("tbody");
CSV_D3JS.columns = columns;
CSV_D3JS.data = data;
// append the header row
CSV_D3JS.thead
.append("tr")
.selectAll("th")
.data(CSV_D3JS.columns)
.enter()
.append("th")
.text(function(column) {
return column;
});
CSV_D3JS.next = 1;
CSV_D3JS.chunk_size = 500;
CSV_D3JS.chunks = Math.ceil(CSV_D3JS.data.length / CSV_D3JS.chunk_size);
CSV_D3JS.loadNext(undefined, {
id: CSV_D3JS.id,
});
if (CSV_D3JS.chunks > 1) {
CSV_D3JS.trigger(document, "showLoader", {
id: CSV_D3JS.id,
});
}
return true;
};
this.loadNext = function(ev, data) {
if (data.id === CSV_D3JS.id && CSV_D3JS.next <= CSV_D3JS.chunks) {
// create a row for each object in the data chunk
CSV_D3JS.tbody
.selectAll("tr")
.data(CSV_D3JS.data.slice(0, CSV_D3JS.next * CSV_D3JS.chunk_size))
.enter()
.append("tr")
.selectAll("td")
.data(function(row) {
return CSV_D3JS.columns.map(function(column) {
return { column: column, value: row[column] };
});
})
.enter()
.append("td")
.text(function(d) {
return d.value;
});
if (CSV_D3JS.next === CSV_D3JS.chunks) {
CSV_D3JS.trigger(document, "hideLoader", {
id: CSV_D3JS.id,
});
}
CSV_D3JS.next += 1;
}
};
this.after("initialize", function() {
CSV_D3JS = this;
CSV_D3JS.id = CSV_D3JS.node.id;
var delimiter = CSV_D3JS.$node.data("csv-delimiter"),
encoding = CSV_D3JS.$node.data("csv-encoding"),
resource = CSV_D3JS.$node.data("csv-source"),
dsv = d3.dsv(delimiter, "text/csv; charset=" + encoding);
dsv(resource, function(data) {
var col = Object.keys(data[0]);
CSV_D3JS.tabulate(data, CSV_D3JS.node, col);
});
this.on(document, "loadNext", this.loadNext);
});
}
export default flight.component(CSV_D3JS);