solid-panes/lib/classInstancePane.js

Solid-compatible Panes: applets and views for the mashlib and databrowser

"use strict";

/*   Class member Pane
 **
 **  This outline pane lists the members of a class
 */
var UI = require('solid-ui');

var $rdf = require('rdflib');

var ns = UI.ns;
module.exports = {
  icon: UI.icons.originalIconBase + 'tango/22-folder-open.png',
  name: 'classInstance',
  // Create a new folder in a Solid system,
  audience: [ns.solid('PowerUser')],
  label: function label(subject, context) {
    var kb = context.session.store;
    var n = kb.each(undefined, ns.rdf('type'), subject).length;
    if (n > 0) return 'List (' + n + ')'; // Show how many in hover text

    return null; // Suppress pane otherwise
  },
  render: function render(subject, context) {
    var dom = context.dom;
    var outliner = context.getOutliner(dom);
    var kb = context.session.store;

    var complain = function complain(message, color) {
      var pre = dom.createElement('pre');
      pre.setAttribute('style', 'background-color: ' + color || '#eed' + ';');
      div.appendChild(pre);
      pre.appendChild(dom.createTextNode(message));
    };

    var div = dom.createElement('div');
    div.setAttribute('class', 'instancePane');
    div.setAttribute('style', '  border-top: solid 1px #777; border-bottom: solid 1px #777; margin-top: 0.5em; margin-bottom: 0.5em '); // If this is a class, look for all both explicit and implicit

    var sts = kb.statementsMatching(undefined, ns.rdf('type'), subject);

    if (sts.length > 0) {
      var already = {};
      var more = [];
      sts.map(function (st) {
        already[st.subject.toNT()] = st;
      });

      for (var nt in kb.findMembersNT(subject)) {
        if (!already[nt]) {
          more.push($rdf.st(kb.fromNT(nt), ns.rdf('type'), subject)); // @@ no provenance
        }
      }

      if (more.length) {
        complain('There are ' + sts.length + ' explicit and ' + more.length + ' implicit members of ' + UI.utils.label(subject));
      }

      if (subject.sameTerm(ns.rdf('Property'))) {// / Do not find all properties used as properties .. unless look at kb index
      } else if (subject.sameTerm(ns.rdfs('Class'))) {
        var uses = kb.statementsMatching(undefined, ns.rdf('type'), undefined);
        var usedTypes = {};
        uses.map(function (st) {
          usedTypes[st.object] = st;
        }); // Get unique

        var used = [];

        for (var i in usedTypes) {
          used.push($rdf.st($rdf.sym(i), ns.rdf('type'), ns.rdfs('Class')));
        }

        complain('Total of ' + uses.length + ' type statements and ' + used.length + ' unique types.');
      }

      if (sts.length > 10) {
        var tr = dom.createElement('TR');
        tr.appendChild(dom.createTextNode('' + sts.length)); // tr.AJAR_statement=sts[i]

        div.appendChild(tr);
      }

      outliner.appendPropertyTRs(div, sts, true, function (_pred) {
        return true;
      });

      if (more.length) {
        complain('Implicit:');
        outliner.appendPropertyTRs(div, more, true, function (_pred) {
          return true;
        });
      }
    }

    return div;
  }
}; // ends
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