From 7bff2db0dc71bc4c5bf34ea59d8e72e2849305c5 Mon Sep 17 00:00:00 2001
From: Bart Mesuere <Bart.Mesuere@UGent.be>
Date: Sat, 2 Jul 2016 18:21:00 +0200
Subject: [PATCH] extract Node class

---
 .jshintrc                              |   2 +-
 dist/unipept-visualizations.es5.js     | 230 +++++++++++++++----------
 dist/unipept-visualizations.es5.js.map |   2 +-
 dist/unipept-visualizations.js         | 151 ++++++++--------
 dist/unipept-visualizations.min.js     |   2 +-
 src/node.js                            |  63 +++++++
 src/treemap.js                         |  41 +----
 src/treeview.js                        |  45 ++---
 8 files changed, 304 insertions(+), 232 deletions(-)
 create mode 100644 src/node.js

diff --git a/.jshintrc b/.jshintrc
index cb17f3d..a324ef2 100644
--- a/.jshintrc
+++ b/.jshintrc
@@ -1,5 +1,5 @@
 {
-  "predef": [ "module", "ZeroClipboard", "confirm", "requestAnimFrame", "self", "init_phylogram", "Newick", "indexedDB", "IDBKeyRange", "constructSelectionTree", "constructGenomeTable", "constructPancoreGraph", "constructSimMatrix", "constructMyGenomes", "downloadDataByForm", "d3", "html2canvas", "console", "_gaq", "delay", "stringHash", "logToGoogle", "info", "highlight", "error", "addCopy", "fullScreenApi", "triggerDownloadModal", "getReadableColorFor"],
+  "predef": [ "univis", "module", "ZeroClipboard", "confirm", "requestAnimFrame", "self", "init_phylogram", "Newick", "indexedDB", "IDBKeyRange", "constructSelectionTree", "constructGenomeTable", "constructPancoreGraph", "constructSimMatrix", "constructMyGenomes", "downloadDataByForm", "d3", "html2canvas", "console", "_gaq", "delay", "stringHash", "logToGoogle", "info", "highlight", "error", "addCopy", "fullScreenApi", "triggerDownloadModal", "getReadableColorFor"],
 
   "esversion": 6,
 
diff --git a/dist/unipept-visualizations.es5.js b/dist/unipept-visualizations.es5.js
index 18e5b8b..1354a8e 100644
--- a/dist/unipept-visualizations.es5.js
+++ b/dist/unipept-visualizations.es5.js
@@ -2,15 +2,106 @@
 
 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
 
+var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
+
 var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
 
-var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
+function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-/**
- * Interactive treemap
- */
+/*jshint -W079 */
+var univis = univis || {};
+
+univis.Node = function () {
+    function Node() {
+        var node = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
+
+        _classCallCheck(this, Node);
+
+        this.data = {};
+        _extends(this, node);
+    }
+
+    _createClass(Node, [{
+        key: "setRecursiveProperty",
+
+
+        // sets a property for a node and all its children
+        value: function setRecursiveProperty(property, value) {
+            this[property] = value;
+            if (this.children) {
+                this.children.forEach(function (c) {
+                    c.setRecursiveProperty(property, value);
+                });
+            } else if (this._children) {
+                this._children.forEach(function (c) {
+                    c.setRecursiveProperty(property, value);
+                });
+            }
+        }
+
+        // Returns true if a node is a leaf
+
+    }, {
+        key: "isLeaf",
+        value: function isLeaf() {
+            return !this.children && !this._children || this.children && this.children.length === 0 || this._children && this._children.length === 0;
+        }
+    }, {
+        key: "getHeight",
+        value: function getHeight() {
+            if (this._height === undefined) {
+                if (this.isLeaf()) {
+                    this._height = 0;
+                } else {
+                    this._height = d3.max(this.children, function (c) {
+                        return c.getHeight();
+                    }) + 1;
+                }
+            }
+            return this._height;
+        }
+    }, {
+        key: "getDepth",
+        value: function getDepth() {
+            if (this._depth === undefined) {
+                if (this.parent === undefined) {
+                    this._depth = 0;
+                } else {
+                    this._depth = this.parent.getDepth() + 1;
+                }
+            }
+            return this._depth;
+        }
+    }], [{
+        key: "new",
+        value: function _new() {
+            var node = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
+
+            return new Node(node);
+        }
+    }, {
+        key: "createNode",
+        value: function createNode(node) {
+            var construct = arguments.length <= 1 || arguments[1] === undefined ? Node.new : arguments[1];
+
+            if (node.children) {
+                node.children = node.children.map(function (n) {
+                    return Node.createNode(n, construct);
+                });
+            }
+            return construct.call(null, node);
+        }
+    }]);
+
+    return Node;
+}();
+; /**
+  * Interactive treemap
+  */
 (function () {
     var TreeMap = function TreeMap(element, data) {
         var options = arguments.length <= 2 || arguments[2] === undefined ? {} : arguments[2];
@@ -73,7 +164,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
         function init() {
             settings = _extends({}, DEFAULTS, options);
 
-            root = Node.createNode(data);
+            root = TreemapNode.createNode(data);
 
             settings.width = settings.width - MARGIN.right - MARGIN.left;
             settings.height = settings.height - MARGIN.top - MARGIN.bottom;
@@ -244,58 +335,31 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
             return rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114;
         }
 
-        var Node = function () {
-            function Node() {
-                _classCallCheck(this, Node);
+        var TreemapNode = function (_univis$Node) {
+            _inherits(TreemapNode, _univis$Node);
 
-                this.data = {};
+            function TreemapNode() {
+                _classCallCheck(this, TreemapNode);
+
+                return _possibleConstructorReturn(this, Object.getPrototypeOf(TreemapNode).apply(this, arguments));
             }
 
-            _createClass(Node, [{
-                key: "getHeight",
-                value: function getHeight() {
-                    if (this._height === undefined) {
-                        if (this.isLeaf()) {
-                            this._height = 0;
-                        } else {
-                            this._height = d3.max(this.children, function (c) {
-                                return c.getHeight();
-                            }) + 1;
-                        }
-                    }
-                    return this._height;
-                }
-            }, {
-                key: "getDepth",
-                value: function getDepth() {
-                    if (this._depth === undefined) {
-                        if (this.parent === undefined) {
-                            this._depth = 0;
-                        } else {
-                            this._depth = this.parent.getDepth() + 1;
-                        }
-                    }
-                    return this._depth;
+            _createClass(TreemapNode, null, [{
+                key: "new",
+                value: function _new() {
+                    var node = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
+
+                    return new TreemapNode(node);
                 }
             }, {
-                key: "isLeaf",
-                value: function isLeaf() {
-                    return !this.children && !this._children || this.children && this.children.length === 0 || this._children && this._children.length === 0;
-                }
-            }], [{
                 key: "createNode",
                 value: function createNode(node) {
-                    if (node.children) {
-                        node.children = node.children.map(function (n) {
-                            return Node.createNode(n);
-                        });
-                    }
-                    return _extends(new Node(), node);
+                    return univis.Node.createNode(node, TreemapNode.new);
                 }
             }]);
 
-            return Node;
-        }();
+            return TreemapNode;
+        }(univis.Node);
 
         /*************** Public methods ***************/
         /**
@@ -455,7 +519,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
             svg = d3.select(element).append("svg").attr("version", "1.1").attr("xmlns", "http://www.w3.org/2000/svg").attr("viewBox", "0 0 " + (settings.width + MARGIN.right + MARGIN.left) + " " + (settings.height + MARGIN.top + MARGIN.bottom)).attr("width", settings.width + MARGIN.right + MARGIN.left).attr("height", settings.height + MARGIN.top + MARGIN.bottom).call(zoomListener).append("g").attr("transform", "translate(" + MARGIN.left + "," + MARGIN.top + ")").append("g");
 
-            draw(Node.createNode(data));
+            draw(TreeviewNode.createNode(data));
         }
 
         function initTooltip() {
@@ -471,7 +535,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
         }
 
         function draw(data) {
-            var _this = this;
+            var _this2 = this;
 
             widthScale.domain([0, data.data.count]);
 
@@ -483,7 +547,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
             root.setSelected(true);
 
             root.children.forEach(function (d, i) {
-                d.color = d3.functor(settings.colors).call(_this, d, i);
+                d.color = d3.functor(settings.colors).call(_this2, d, i);
                 d.setRecursiveProperty("color", d.color);
             });
 
@@ -526,9 +590,9 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
             if (settings.enableLabels) {
                 nodeEnter.append("text").attr("x", function (d) {
-                    return d.isLeaf() ? -10 : 10;
+                    return d.isLeaf() ? 10 : -10;
                 }).attr("dy", ".35em").attr("text-anchor", function (d) {
-                    return d.isLeaf() ? "end" : "start";
+                    return d.isLeaf() ? "start" : "end";
                 }).text(settings.getLabel).style("font", "10px sans-serif").style("fill-opacity", 1e-6);
             }
 
@@ -740,14 +804,21 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
             return d.data.count + " hits";
         }
 
-        var Node = function () {
-            function Node() {
-                _classCallCheck(this, Node);
+        var TreeviewNode = function (_univis$Node2) {
+            _inherits(TreeviewNode, _univis$Node2);
+
+            function TreeviewNode() {
+                var node = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
 
-                this.data = {};
+                _classCallCheck(this, TreeviewNode);
+
+                var _this3 = _possibleConstructorReturn(this, Object.getPrototypeOf(TreeviewNode).call(this, node));
+
+                _this3.setCount();
+                return _this3;
             }
 
-            _createClass(Node, [{
+            _createClass(TreeviewNode, [{
                 key: "setCount",
                 value: function setCount() {
                     if (settings.countAccessor(this)) {
@@ -760,31 +831,6 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
                         this.data.count = 0;
                     }
                 }
-
-                // sets a property for a node and all its children
-
-            }, {
-                key: "setRecursiveProperty",
-                value: function setRecursiveProperty(property, value) {
-                    this[property] = value;
-                    if (this.children) {
-                        this.children.forEach(function (c) {
-                            c.setRecursiveProperty(property, value);
-                        });
-                    } else if (this._children) {
-                        this._children.forEach(function (c) {
-                            c.setRecursiveProperty(property, value);
-                        });
-                    }
-                }
-
-                // Returns true if a node is a leaf
-
-            }, {
-                key: "isLeaf",
-                value: function isLeaf() {
-                    return this.children || this._children;
-                }
             }, {
                 key: "setSelected",
                 value: function setSelected(value) {
@@ -844,21 +890,21 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
                     }
                 }
             }], [{
+                key: "new",
+                value: function _new() {
+                    var node = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
+
+                    return new TreeviewNode(node);
+                }
+            }, {
                 key: "createNode",
                 value: function createNode(node) {
-                    if (node.children) {
-                        node.children = node.children.map(function (n) {
-                            return Node.createNode(n);
-                        });
-                    }
-                    var obj = _extends(new Node(), node);
-                    obj.setCount();
-                    return obj;
+                    return univis.Node.createNode(node, TreeviewNode.new);
                 }
             }]);
 
-            return Node;
-        }();
+            return TreeviewNode;
+        }(univis.Node);
 
         /*************** Public methods ***************/
 
diff --git a/dist/unipept-visualizations.es5.js.map b/dist/unipept-visualizations.es5.js.map
index 5ef148f..acfc3ad 100644
--- a/dist/unipept-visualizations.es5.js.map
+++ b/dist/unipept-visualizations.es5.js.map
@@ -1 +1 @@
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* Interactive treemap\n */\n(function () {\n    var TreeMap = function TreeMap(element, data, options = {}) {\n        let that = {};\n\n        const MARGIN = {\n                top: 0,\n                right: 0,\n                bottom: 0,\n                left: 0\n            },\n            DEFAULTS = {\n                height: 300,\n                width: 600,\n\n                className: 'unipept-treemap',\n                levels: undefined,\n                getLevel: d => d.getDepth(),\n\n                countAccessor: d => d.data.self_count,\n                rerootCallback: undefined,\n\n                getBreadcrumbTooltip: d => d.name,\n                colorRoot: \"#104B7D\",\n                colorLeaf: \"#fdffcc\",\n                colorBreadcrumbs: \"#FF8F00\",\n\n                labelHeight: 10,\n                getLabel: d => d.name,\n\n                enableTooltips: true,\n                getTooltip: getTooltip,\n                getTooltipTitle: getTooltipTitle,\n                getTooltipText: getTooltipText\n            };\n\n        let settings;\n\n        let root,\n            nodeId = 0,\n            current,\n            treemapLayout,\n            breadcrumbs,\n            treemap,\n            tooltip,\n            colorScale;\n\n        /**\n         * Initializes Treemap\n         */\n        function init() {\n            settings = Object.assign({}, DEFAULTS, options);\n\n            root = Node.createNode(data);\n\n            settings.width = settings.width - MARGIN.right - MARGIN.left;\n            settings.height = settings.height - MARGIN.top - MARGIN.bottom;\n\n            settings.levels = settings.levels || root.getHeight();\n\n            if (settings.enableTooltips) {\n                initTooltip();\n            }\n\n            initCSS();\n\n            // setup the visualisation\n            draw(root);\n            reroot(root, false);\n        }\n\n        function initTooltip() {\n            tooltip = d3.select(\"body\")\n                .append(\"div\")\n                .attr(\"id\", element.id + \"-tooltip\")\n                .attr(\"class\", \"tip\")\n                .style(\"position\", \"absolute\")\n                .style(\"z-index\", \"10\")\n                .style(\"visibility\", \"hidden\")\n                .style(\"background-color\", \"white\")\n                .style(\"padding\", \"2px\")\n                .style(\"border\", \"1px solid #dddddd\")\n                .style(\"border-radius\", \"3px;\");\n        }\n\n        function initCSS() {\n            let elementClass = settings.className;\n            $(element).addClass(elementClass);\n            $(\"<style>\").prop(\"type\", \"text/css\")\n                .html(`\n                    .${elementClass} {\n                        font-family: Roboto,'Helvetica Neue',Helvetica,Arial,sans-serif;\n                    }\n                    .${elementClass} .node {\n                        font-size: 9px;\n                        line-height: 10px;\n                        overflow: hidden;\n                        position: absolute;\n                        text-indent: 2px;\n                        text-align: center;\n                        text-overflow: ellipsis;\n                        cursor: pointer;\n                    }\n                    .${elementClass} .node:hover {\n                        outline: 1px solid white;\n                    }\n                    .${elementClass} .breadcrumbs {\n                        font-size: 11px;\n                        line-height: 20px;\n                        padding-left: 5px;\n                        font-weight: bold;\n                        color: white;\n                        box-sizing: border-box;\n                    }\n                    .full-screen .${elementClass} .breadcrumbs {\n                        width: 100% !important;\n                    }\n                    .${elementClass} .crumb {\n                        cursor: pointer;\n                    }\n                    .${elementClass} .crumb .link:hover {\n                        text-decoration: underline;\n                    }\n                    .${elementClass} .breadcrumbs .crumb + .crumb::before {\n                        content: \" > \";\n                        cursor: default;\n                    }\n                `)\n                .appendTo(\"head\");\n        }\n\n        function draw(data) {\n            $(element).empty();\n\n            treemapLayout = d3.layout.treemap()\n                .size([settings.width + 1, settings.height + 1])\n                .padding([settings.labelHeight, 0, 0, 0])\n                .value(settings.countAccessor);\n\n            colorScale = d3.scale.linear()\n                .domain([0, settings.levels])\n                .range([settings.colorRoot, settings.colorLeaf])\n                .interpolate(d3.interpolateLab);\n\n            breadcrumbs = d3.select(element).append(\"div\")\n                .attr(\"class\", \"breadcrumbs\")\n                .style(\"position\", \"relative\")\n                .style(\"width\", settings.width + \"px\")\n                .style(\"height\", \"20px\")\n                .style(\"background-color\", settings.colorBreadcrumbs);\n\n            treemap = d3.select(element).append(\"div\")\n                .style(\"position\", \"relative\")\n                .style(\"width\", settings.width + \"px\")\n                .style(\"height\", settings.height + \"px\")\n                .style(\"left\", MARGIN.left + \"px\")\n                .style(\"top\", MARGIN.top + \"px\");\n        }\n\n        function setBreadcrumbs() {\n            let crumbs = [];\n            let temp = current;\n            while (temp) {\n                crumbs.push(temp);\n                temp = temp.parent;\n            }\n            crumbs.reverse();\n            breadcrumbs.html(\"\");\n            breadcrumbs.selectAll(\".crumb\")\n                .data(crumbs)\n                .enter()\n                .append(\"span\")\n                .attr(\"class\", \"crumb\")\n                .attr(\"title\", settings.getBreadcrumbTooltip)\n                .html(d => `<span class='link'>${d.name}</span>`)\n                .on(\"click\", d => {\n                    reroot(d);\n                });\n        }\n\n        function reroot(data, triggerCallback = true) {\n            current = data;\n\n            setBreadcrumbs();\n\n            let nodes = treemap.selectAll(\".node\")\n                .data(treemapLayout.nodes(data), d => d.id || (d.id = ++nodeId));\n\n            nodes.enter()\n                .append(\"div\")\n                .attr(\"class\", \"node\")\n                .style(\"background\", d => colorScale(settings.getLevel(d)))\n                .style(\"color\", d => getReadableColorFor(colorScale(settings.getLevel(d))))\n                .style(\"left\", \"0px\")\n                .style(\"top\", \"0px\")\n                .style(\"width\", \"0px\")\n                .style(\"height\", \"0px\")\n                .text(settings.getLabel)\n                .on(\"click\", d => {\n                    reroot(d);\n                })\n                .on(\"contextmenu\", d => {\n                    d3.event.preventDefault();\n                    if (current.parent) {\n                        reroot(current.parent);\n                    }\n                })\n                .on(\"mouseover\", tooltipIn)\n                .on(\"mousemove\", tooltipMove)\n                .on(\"mouseout\", tooltipOut);\n\n            nodes.order()\n                .transition()\n                .call(position);\n\n            nodes.exit().remove();\n\n            if (triggerCallback && settings.rerootCallback) {\n                settings.rerootCallback.call(null, current);\n            }\n        }\n\n        function update() {\n            let nodes = treemap.selectAll(\".node\")\n                .data(treemapLayout.nodes(data), d => d.id)\n                .order()\n                .transition()\n                .call(position);\n        }\n\n        /**\n         * sets the position of a square\n         */\n        function position() {\n            this.style(\"left\", d => d.x + \"px\")\n                .style(\"top\", d => d.y + \"px\")\n                .style(\"width\", d => Math.max(0, d.dx - 1) + \"px\")\n                .style(\"height\", d => Math.max(0, d.dy - 1) + \"px\");\n        }\n\n        /**\n         * Resizes the treemap for a given width and height\n         */\n        function resize(width, height) {\n            treemapLayout = d3.layout.treemap()\n                .size([width + 1, height + 1])\n                .padding([10, 0, 0, 0])\n                .value(settings.countAccessor);\n            update();\n        }\n\n        // tooltip functions\n        function tooltipIn(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.html(settings.getTooltip(d))\n                .style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\")\n                .style(\"visibility\", \"visible\");\n        }\n\n        function tooltipOut(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.style(\"visibility\", \"hidden\");\n        }\n\n        function tooltipMove(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\");\n        }\n\n        function getTooltip(d) {\n            return `<h3 class='tip-title'>${settings.getTooltipTitle(d)}</h3><p>${settings.getTooltipText(d)}</p>`;\n        }\n\n        function getTooltipTitle(d) {\n            return d.name;\n        }\n\n        function getTooltipText(d) {\n            return `${d.data.count} hits`;\n        }\n\n        /*\n         * Returns the readable text color based on the brightness of a given backgroud color\n         */\n        function getReadableColorFor(color) {\n            let textColor = \"#000\";\n            try {\n                textColor = brightness(d3.rgb(color)) < 125 ? \"#eee\" : \"#000\";\n            } catch (err) {}\n            return textColor;\n        }\n\n        /*\n         * Returns the brightness of an rgb-color\n         * from: http:// www.w3.org/WAI/ER/WD-AERT/#color-contrast\n         */\n        function brightness(rgb) {\n            return rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114;\n        }\n\n        class Node {\n            constructor() {\n                this.data = {};\n            }\n\n            static createNode(node) {\n                if (node.children) {\n                    node.children = node.children.map(n => Node.createNode(n));\n                }\n                return Object.assign(new Node(), node);\n            }\n\n            getHeight() {\n                if (this._height === undefined) {\n                    if (this.isLeaf()) {\n                        this._height = 0;\n                    } else {\n                        this._height = d3.max(this.children, c => c.getHeight()) + 1;\n                    }\n                }\n                return this._height;\n            }\n\n            getDepth() {\n                if (this._depth === undefined) {\n                    if (this.parent === undefined) {\n                        this._depth = 0;\n                    } else {\n                        this._depth = this.parent.getDepth() + 1;\n                    }\n                }\n                return this._depth;\n            }\n\n            isLeaf() {\n                return (!this.children && !this._children) ||\n                    (this.children && this.children.length === 0) ||\n                    (this._children && this._children.length === 0);\n            }\n        }\n\n\n        /*************** Public methods ***************/\n        /**\n         * Resets the treemap to its initial position\n         */\n        that.reset = function reset() {\n            reroot(root);\n        };\n\n        /**\n         * Sets the visualisation in full screen mode\n         *\n         * @param <boolean> isFullScreen indicates if we're in full screen mode\n         */\n        that.setFullScreen = function setFullScreen(isFullScreen) {\n            // the delay is because the event fires before we're in fullscreen\n            // so the height en width functions don't give a correct result\n            // without the delay\n            setTimeout(function () {\n                let [w, h] = [settings.width, settings.height];\n                if (isFullScreen) {\n                    w = $(window).width();\n                    h = $(window).height() - 44;\n                }\n                resize(w, h);\n            }, 1000);\n        };\n\n        // initialize the object\n        init();\n\n        return that;\n    };\n\n    function Plugin(userData, option) {\n        return this.each(function () {\n            let $this = $(this);\n            let data = $this.data('vis.treemap');\n            let options = $.extend({}, $this.data(), typeof option === 'object' && option);\n\n            if (!data) {\n                $this.data('vis.treemap', (data = new TreeMap(this, userData, options)));\n            }\n            if (typeof option === 'string') {\n                data[option]();\n            }\n        });\n    }\n\n    $.fn.treemap = Plugin;\n    $.fn.treemap.Constructor = TreeMap;\n})();\n;/**\n * Zoomable treeview, inspiration from\n * - http://bl.ocks.org/mbostock/4339083\n * - https://gist.github.com/robschmuecker/7880033\n * - http://www.brightpointinc.com/interactive/budget/index.html?source=d3js\n */\n(function () {\n    var TreeView = function TreeView(element, data, options = {}) {\n        let that = {};\n\n        const MARGIN = {\n                top: 5,\n                right: 5,\n                bottom: 5,\n                left: 5\n            },\n            DURATION = 750,\n            COLOR_SCALE = d3.scale.category10(),\n            DEFAULTS = {\n                height: 300,\n                width: 600,\n                nodeDistance: 180,\n                levelsToExpand: 2,\n                minNodeSize: 2,\n                maxNodeSize: 105,\n\n                countAccessor: d => d.data.count,\n\n                colors: d => COLOR_SCALE(d.name),\n                nodeFillColor: nodeFillColor,\n                nodeStrokeColor: nodeStrokeColor,\n                linkStrokeColor: linkStrokeColor,\n\n                enableInnerArcs: true,\n                enableExpandOnClick: true,\n                enableRightClick: true,\n\n                enableLabels: true,\n                getLabel: d => d.name,\n\n                enableTooltips: true,\n                getTooltip: getTooltip,\n                getTooltipTitle: getTooltipTitle,\n                getTooltipText: getTooltipText\n            };\n\n        let settings;\n\n        let visibleRoot,\n            tooltipTimer;\n\n        let nodeId = 0,\n            root;\n\n        let tree,\n            tooltip,\n            diagonal,\n            widthScale,\n            innerArc,\n            zoomListener,\n            svg;\n\n        function init() {\n            settings = Object.assign({}, DEFAULTS, options);\n\n            settings.width = settings.width - MARGIN.right - MARGIN.left;\n            settings.height = settings.height - MARGIN.top - MARGIN.bottom;\n\n            if (settings.enableTooltips) {\n                initTooltip();\n            }\n\n            if (settings.enableInnerArcs) {\n                initInnerArcs();\n            }\n\n            tree = d3.layout.tree()\n                .nodeSize([2, 10])\n                .separation((a, b) => {\n                    let width = (nodeSize(a) + nodeSize(b)),\n                        distance = width / 2 + 4;\n                    return (a.parent === b.parent) ? distance : distance + 4;\n                });\n\n            diagonal = d3.svg.diagonal().projection(d => [d.y, d.x]);\n\n            widthScale = d3.scale.linear().range([settings.minNodeSize, settings.maxNodeSize]);\n\n            // define the zoomListener which calls the zoom function on the \"zoom\" event constrained within the scaleExtents\n            zoomListener = d3.behavior.zoom()\n                .scaleExtent([0.1, 3])\n                .on(\"zoom\", () => {\n                    svg.attr(\"transform\", `translate(${d3.event.translate})scale(${d3.event.scale})`);\n                });\n\n            svg = d3.select(element).append(\"svg\")\n                .attr(\"version\", \"1.1\")\n                .attr(\"xmlns\", \"http://www.w3.org/2000/svg\")\n                .attr(\"viewBox\", `0 0 ${settings.width + MARGIN.right + MARGIN.left} ${settings.height + MARGIN.top + MARGIN.bottom}`)\n                .attr(\"width\", settings.width + MARGIN.right + MARGIN.left)\n                .attr(\"height\", settings.height + MARGIN.top + MARGIN.bottom)\n                .call(zoomListener)\n                .append(\"g\")\n                .attr(\"transform\", `translate(${MARGIN.left},${MARGIN.top})`)\n                .append(\"g\");\n\n            draw(Node.createNode(data));\n        }\n\n        function initTooltip() {\n            tooltip = d3.select(\"body\")\n                .append(\"div\")\n                .attr(\"id\", element.id + \"-tooltip\")\n                .attr(\"class\", \"tip\")\n                .style(\"position\", \"absolute\")\n                .style(\"z-index\", \"10\")\n                .style(\"visibility\", \"hidden\")\n                .style(\"background-color\", \"white\")\n                .style(\"padding\", \"2px\")\n                .style(\"border\", \"1px solid #dddddd\")\n                .style(\"border-radius\", \"3px;\");\n        }\n\n        function initInnerArcs() {\n            let arcScale = d3.scale.linear().range([0, 2 * Math.PI]);\n\n            innerArc = d3.svg.arc()\n                .outerRadius(nodeSize)\n                .startAngle(0)\n                .endAngle(d => arcScale(d.data.self_count / d.data.count) || 0);\n        }\n\n        function draw(data) {\n            widthScale.domain([0, data.data.count]);\n\n            root = data;\n            root.x0 = settings.height / 2;\n            root.y0 = 0;\n\n            // set everything visible\n            root.setSelected(true);\n\n            root.children.forEach((d, i) => {\n                d.color = d3.functor(settings.colors).call(this, d, i);\n                d.setRecursiveProperty(\"color\", d.color);\n            });\n\n            if (settings.enableExpandOnClick) {\n                root.collapseAll();\n                root.expand();\n            } else {\n                root.expandAll();\n            }\n\n            update(root);\n            centerNode(root);\n        }\n\n        function update(source) {\n            // Compute the new tree layout.\n            let nodes = tree.nodes(root).reverse(),\n                links = tree.links(nodes);\n\n            // Normalize for fixed-depth.\n            nodes.forEach(d => {\n                d.y = d.depth * settings.nodeDistance;\n            });\n\n            // Update the nodes…\n            let node = svg.selectAll(\"g.node\")\n                .data(nodes, d => d.id || (d.id = ++nodeId));\n\n            // Enter any new nodes at the parent's previous position.\n            let nodeEnter = node.enter().append(\"g\")\n                .attr(\"class\", \"node\")\n                .style(\"cursor\", \"pointer\")\n                .attr(\"transform\", d => `translate(${source.y || 0},${source.x0 || 0})`)\n                .on(\"click\", click)\n                .on(\"mouseover\", tooltipIn)\n                .on(\"mouseout\", tooltipOut)\n                .on(\"contextmenu\", rightClick);\n\n            nodeEnter.append(\"circle\")\n                .attr(\"r\", 1e-6)\n                .style(\"stroke-width\", \"1.5px\")\n                .style(\"stroke\", settings.nodeStrokeColor)\n                .style(\"fill\", settings.nodeFillColor);\n\n            if (settings.enableInnerArcs) {\n                nodeEnter.append(\"path\")\n                    .attr(\"d\", innerArc)\n                    .style(\"fill\", settings.nodeStrokeColor)\n                    .style(\"fill-opacity\", 0);\n            }\n\n            if (settings.enableLabels) {\n                nodeEnter.append(\"text\")\n                    .attr(\"x\", d => d.isLeaf() ? -10 : 10)\n                    .attr(\"dy\", \".35em\")\n                    .attr(\"text-anchor\", d => d.isLeaf() ? \"end\" : \"start\")\n                    .text(settings.getLabel)\n                    .style(\"font\", \"10px sans-serif\")\n                    .style(\"fill-opacity\", 1e-6);\n            }\n\n            // Transition nodes to their new position.\n            let nodeUpdate = node.transition()\n                .duration(DURATION)\n                .attr(\"transform\", d => `translate(${d.y},${d.x})`);\n\n            nodeUpdate.select(\"circle\")\n                .attr(\"r\", nodeSize)\n                .style(\"fill-opacity\", d => d._children ? 1 : 0)\n                .style(\"stroke\", settings.nodeStrokeColor)\n                .style(\"fill\", settings.nodeFillColor);\n\n            if (settings.enableLabels) {\n                nodeUpdate.select(\"text\")\n                    .style(\"fill-opacity\", 1);\n            }\n\n            if (settings.enableInnerArcs) {\n                nodeUpdate.select(\"path\")\n                    .duration(DURATION)\n                    .attr(\"d\", innerArc)\n                    .style(\"fill-opacity\", 0.8);\n            }\n\n            // Transition exiting nodes to the parent's new position.\n            let nodeExit = node.exit().transition()\n                .duration(DURATION)\n                .attr(\"transform\", d => `translate(${source.y},${source.x})`)\n                .remove();\n\n            nodeExit.select(\"circle\")\n                .attr(\"r\", 1e-6);\n\n            nodeExit.select(\"path\")\n                .style(\"fill-opacity\", 1e-6);\n\n            nodeExit.select(\"text\")\n                .style(\"fill-opacity\", 1e-6);\n\n            // Update the links…\n            let link = svg.selectAll(\"path.link\")\n                .data(links, d => d.target.id);\n\n            // Enter any new links at the parent's previous position.\n            link.enter().insert(\"path\", \"g\")\n                .attr(\"class\", \"link\")\n                .style(\"fill\", \"none\")\n                .style(\"stroke-opacity\", \"0.5\")\n                .style(\"stroke-linecap\", \"round\")\n                .style(\"stroke\", settings.linkStrokeColor)\n                .style(\"stroke-width\", 1e-6)\n                .attr(\"d\", d => {\n                    let o = {\n                        x: (source.x0 || 0),\n                        y: (source.y0 || 0)\n                    };\n                    return diagonal({\n                        source: o,\n                        target: o\n                    });\n                });\n\n            // Transition links to their new position.\n            link.transition()\n                .duration(DURATION)\n                .attr(\"d\", diagonal)\n                .style(\"stroke\", settings.linkStrokeColor)\n                .style(\"stroke-width\", d => {\n                    if (d.source.selected) {\n                        return widthScale(d.target.data.count) + \"px\";\n                    } else {\n                        return \"4px\";\n                    }\n                });\n\n            // Transition exiting nodes to the parent's new position.\n            link.exit().transition()\n                .duration(DURATION)\n                .style(\"stroke-width\", 1e-6)\n                .attr(\"d\", d => {\n                    let o = {\n                        x: source.x,\n                        y: source.y\n                    };\n                    return diagonal({\n                        source: o,\n                        target: o\n                    });\n                })\n                .remove();\n\n            // Stash the old positions for transition.\n            nodes.forEach(d => {\n                [d.x0, d.y0] = [d.x, d.y];\n            });\n        }\n\n        function nodeSize(d) {\n            if (d.selected) {\n                return widthScale(d.data.count) / 2;\n            } else {\n                return 2;\n            }\n        }\n\n        // Toggle children on click.\n        function click(d) {\n            if (!settings.enableExpandOnClick) {\n                return;\n            }\n\n            // check if click is triggered by panning on a node\n            if (d3.event.defaultPrevented) {\n                return;\n            }\n\n            if (d3.event.shiftKey) {\n                d.expandAll();\n            } else if (d.children) {\n                d.collapse();\n            } else {\n                d.expand();\n            }\n            update(d);\n            centerNode(d);\n        }\n\n        function rightClick(d) {\n            if (settings.enableRightClick) {\n                reroot(d);\n            }\n        }\n\n        // Sets the width of the right clicked node to 100%\n        function reroot(d) {\n            if (d === visibleRoot && d !== root) {\n                reroot(root);\n                return;\n            }\n            visibleRoot = d;\n\n            // set Selection properties\n            root.setSelected(false);\n            d.setSelected(true);\n\n            // scale the lines\n            widthScale.domain([0, d.data.count]);\n\n            d.expand();\n\n            // redraw\n            if (d3.event !== null) {\n                d3.event.preventDefault();\n            }\n            update(d);\n            centerNode(d);\n        }\n\n        // Center a node\n        function centerNode(source) {\n            let scale = zoomListener.scale(),\n                [x, y] = [-source.y0, -source.x0];\n            x = x * scale + settings.width / 4;\n            y = y * scale + settings.height / 2;\n            svg.transition()\n                .duration(DURATION)\n                .attr(\"transform\", `translate(${x},${y})scale(${scale})`);\n            zoomListener.scale(scale);\n            zoomListener.translate([x, y]);\n        }\n\n        // tooltip functions\n        function tooltipIn(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.html(settings.getTooltip(d))\n                .style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\");\n\n            tooltipTimer = setTimeout(() => {\n                tooltip.style(\"visibility\", \"visible\");\n            }, 1000);\n\n        }\n\n        function tooltipOut(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            clearTimeout(tooltipTimer);\n            tooltip.style(\"visibility\", \"hidden\");\n        }\n\n        /************** Default methods ***************/\n        // set fill color\n        function nodeFillColor(d) {\n            if (d.selected) {\n                return d._children ? d.color || \"#aaa\" : \"#fff\";\n            } else {\n                return \"#aaa\";\n            }\n        }\n\n        // set node stroke color\n        function nodeStrokeColor(d) {\n            if (d.selected) {\n                return d.color || \"#aaa\";\n            } else {\n                return \"#aaa\";\n            }\n        }\n\n        // set link stroke color\n        function linkStrokeColor(d) 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option === 'object' && option);\n\n            if (!data) {\n                $this.data('vis.treeview', (data = new TreeView(this, userData, options)));\n            }\n            if (typeof option === 'string') {\n                data[option]();\n            }\n        });\n    }\n\n    $.fn.treeview = Plugin;\n    $.fn.treeview.Constructor = TreeView;\n})();\n"]}
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-W079 */\nlet univis = univis || {};\n\nunivis.Node = class Node {\n    constructor(node = {}) {\n        this.data = {};\n        Object.assign(this, node);\n    }\n\n    static new(node = {}) {\n        return new Node(node);\n    }\n\n    static createNode(node, construct = Node.new) {\n        if (node.children) {\n            node.children = node.children.map(n => Node.createNode(n, construct));\n        }\n        return construct.call(null, node);\n    }\n\n    // sets a property for a node and all its children\n    setRecursiveProperty(property, value) {\n        this[property] = value;\n        if (this.children) {\n            this.children.forEach(c => {\n                c.setRecursiveProperty(property, value);\n            });\n        } else if (this._children) {\n            this._children.forEach(c => {\n                c.setRecursiveProperty(property, value);\n            });\n        }\n    }\n\n    // Returns true if a node is a leaf\n    isLeaf() {\n        return (!this.children && !this._children) ||\n            (this.children && this.children.length === 0) ||\n            (this._children && this._children.length === 0);\n    }\n\n    getHeight() {\n        if (this._height === undefined) {\n            if (this.isLeaf()) {\n                this._height = 0;\n            } else {\n                this._height = d3.max(this.children, c => c.getHeight()) + 1;\n            }\n        }\n        return this._height;\n    }\n\n    getDepth() {\n        if (this._depth === undefined) {\n            if (this.parent === undefined) {\n                this._depth = 0;\n            } else {\n                this._depth = this.parent.getDepth() + 1;\n            }\n        }\n        return this._depth;\n    }\n};\n;/**\n * Interactive treemap\n */\n(function () {\n    var TreeMap = function TreeMap(element, data, options = {}) {\n        let that = {};\n\n        const MARGIN = {\n                top: 0,\n                right: 0,\n                bottom: 0,\n                left: 0\n            },\n            DEFAULTS = {\n                height: 300,\n                width: 600,\n\n                className: 'unipept-treemap',\n                levels: undefined,\n                getLevel: d => d.getDepth(),\n\n                countAccessor: d => d.data.self_count,\n                rerootCallback: undefined,\n\n                getBreadcrumbTooltip: d => d.name,\n                colorRoot: \"#104B7D\",\n                colorLeaf: \"#fdffcc\",\n                colorBreadcrumbs: \"#FF8F00\",\n\n                labelHeight: 10,\n                getLabel: d => d.name,\n\n                enableTooltips: true,\n                getTooltip: getTooltip,\n                getTooltipTitle: getTooltipTitle,\n                getTooltipText: getTooltipText\n            };\n\n        let settings;\n\n        let root,\n            nodeId = 0,\n            current,\n            treemapLayout,\n            breadcrumbs,\n            treemap,\n            tooltip,\n            colorScale;\n\n        /**\n         * Initializes Treemap\n         */\n        function init() {\n            settings = Object.assign({}, DEFAULTS, options);\n\n            root = TreemapNode.createNode(data);\n\n            settings.width = settings.width - MARGIN.right - MARGIN.left;\n            settings.height = settings.height - MARGIN.top - MARGIN.bottom;\n\n            settings.levels = settings.levels || root.getHeight();\n\n            if (settings.enableTooltips) {\n                initTooltip();\n            }\n\n            initCSS();\n\n            // setup the visualisation\n            draw(root);\n            reroot(root, false);\n        }\n\n        function initTooltip() {\n            tooltip = d3.select(\"body\")\n                .append(\"div\")\n                .attr(\"id\", element.id + \"-tooltip\")\n                .attr(\"class\", \"tip\")\n                .style(\"position\", \"absolute\")\n                .style(\"z-index\", \"10\")\n                .style(\"visibility\", \"hidden\")\n                .style(\"background-color\", \"white\")\n                .style(\"padding\", \"2px\")\n                .style(\"border\", \"1px solid #dddddd\")\n                .style(\"border-radius\", \"3px;\");\n        }\n\n        function initCSS() {\n            let elementClass = settings.className;\n            $(element).addClass(elementClass);\n            $(\"<style>\").prop(\"type\", \"text/css\")\n                .html(`\n                    .${elementClass} {\n                        font-family: Roboto,'Helvetica Neue',Helvetica,Arial,sans-serif;\n                    }\n                    .${elementClass} .node {\n                        font-size: 9px;\n                        line-height: 10px;\n                        overflow: hidden;\n                        position: absolute;\n                        text-indent: 2px;\n                        text-align: center;\n                        text-overflow: ellipsis;\n                        cursor: pointer;\n                    }\n                    .${elementClass} .node:hover {\n                        outline: 1px solid white;\n                    }\n                    .${elementClass} .breadcrumbs {\n                        font-size: 11px;\n                        line-height: 20px;\n                        padding-left: 5px;\n                        font-weight: bold;\n                        color: white;\n                        box-sizing: border-box;\n                    }\n                    .full-screen .${elementClass} .breadcrumbs {\n                        width: 100% !important;\n                    }\n                    .${elementClass} .crumb {\n                        cursor: pointer;\n                    }\n                    .${elementClass} .crumb .link:hover {\n                        text-decoration: underline;\n                    }\n                    .${elementClass} .breadcrumbs .crumb + .crumb::before {\n                        content: \" > \";\n                        cursor: default;\n                    }\n                `)\n                .appendTo(\"head\");\n        }\n\n        function draw(data) {\n            $(element).empty();\n\n            treemapLayout = d3.layout.treemap()\n                .size([settings.width + 1, settings.height + 1])\n                .padding([settings.labelHeight, 0, 0, 0])\n                .value(settings.countAccessor);\n\n            colorScale = d3.scale.linear()\n                .domain([0, settings.levels])\n                .range([settings.colorRoot, settings.colorLeaf])\n                .interpolate(d3.interpolateLab);\n\n            breadcrumbs = d3.select(element).append(\"div\")\n                .attr(\"class\", \"breadcrumbs\")\n                .style(\"position\", \"relative\")\n                .style(\"width\", settings.width + \"px\")\n                .style(\"height\", \"20px\")\n                .style(\"background-color\", settings.colorBreadcrumbs);\n\n            treemap = d3.select(element).append(\"div\")\n                .style(\"position\", \"relative\")\n                .style(\"width\", settings.width + \"px\")\n                .style(\"height\", settings.height + \"px\")\n                .style(\"left\", MARGIN.left + \"px\")\n                .style(\"top\", MARGIN.top + \"px\");\n        }\n\n        function setBreadcrumbs() {\n            let crumbs = [];\n            let temp = current;\n            while (temp) {\n                crumbs.push(temp);\n                temp = temp.parent;\n            }\n            crumbs.reverse();\n            breadcrumbs.html(\"\");\n            breadcrumbs.selectAll(\".crumb\")\n                .data(crumbs)\n                .enter()\n                .append(\"span\")\n                .attr(\"class\", \"crumb\")\n                .attr(\"title\", settings.getBreadcrumbTooltip)\n                .html(d => `<span class='link'>${d.name}</span>`)\n                .on(\"click\", d => {\n                    reroot(d);\n                });\n        }\n\n        function reroot(data, triggerCallback = true) {\n            current = data;\n\n            setBreadcrumbs();\n\n            let nodes = treemap.selectAll(\".node\")\n                .data(treemapLayout.nodes(data), d => d.id || (d.id = ++nodeId));\n\n            nodes.enter()\n                .append(\"div\")\n                .attr(\"class\", \"node\")\n                .style(\"background\", d => colorScale(settings.getLevel(d)))\n                .style(\"color\", d => getReadableColorFor(colorScale(settings.getLevel(d))))\n                .style(\"left\", \"0px\")\n                .style(\"top\", \"0px\")\n                .style(\"width\", \"0px\")\n                .style(\"height\", \"0px\")\n                .text(settings.getLabel)\n                .on(\"click\", d => {\n                    reroot(d);\n                })\n                .on(\"contextmenu\", d => {\n                    d3.event.preventDefault();\n                    if (current.parent) {\n                        reroot(current.parent);\n                    }\n                })\n                .on(\"mouseover\", tooltipIn)\n                .on(\"mousemove\", tooltipMove)\n                .on(\"mouseout\", tooltipOut);\n\n            nodes.order()\n                .transition()\n                .call(position);\n\n            nodes.exit().remove();\n\n            if (triggerCallback && settings.rerootCallback) {\n                settings.rerootCallback.call(null, current);\n            }\n        }\n\n        function update() {\n            let nodes = treemap.selectAll(\".node\")\n                .data(treemapLayout.nodes(data), d => d.id)\n                .order()\n                .transition()\n                .call(position);\n        }\n\n        /**\n         * sets the position of a square\n         */\n        function position() {\n            this.style(\"left\", d => d.x + \"px\")\n                .style(\"top\", d => d.y + \"px\")\n                .style(\"width\", d => Math.max(0, d.dx - 1) + \"px\")\n                .style(\"height\", d => Math.max(0, d.dy - 1) + \"px\");\n        }\n\n        /**\n         * Resizes the treemap for a given width and height\n         */\n        function resize(width, height) {\n            treemapLayout = d3.layout.treemap()\n                .size([width + 1, height + 1])\n                .padding([10, 0, 0, 0])\n                .value(settings.countAccessor);\n            update();\n        }\n\n        // tooltip functions\n        function tooltipIn(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.html(settings.getTooltip(d))\n                .style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\")\n                .style(\"visibility\", \"visible\");\n        }\n\n        function tooltipOut(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.style(\"visibility\", \"hidden\");\n        }\n\n        function tooltipMove(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\");\n        }\n\n        function getTooltip(d) {\n            return `<h3 class='tip-title'>${settings.getTooltipTitle(d)}</h3><p>${settings.getTooltipText(d)}</p>`;\n        }\n\n        function getTooltipTitle(d) {\n            return d.name;\n        }\n\n        function getTooltipText(d) {\n            return `${d.data.count} hits`;\n        }\n\n        /*\n         * Returns the readable text color based on the brightness of a given backgroud color\n         */\n        function getReadableColorFor(color) {\n            let textColor = \"#000\";\n            try {\n                textColor = brightness(d3.rgb(color)) < 125 ? \"#eee\" : \"#000\";\n            } catch (err) {}\n            return textColor;\n        }\n\n        /*\n         * Returns the brightness of an rgb-color\n         * from: http:// www.w3.org/WAI/ER/WD-AERT/#color-contrast\n         */\n        function brightness(rgb) {\n            return rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114;\n        }\n\n        class TreemapNode extends univis.Node {\n            static new(node = {}) {\n                return new TreemapNode(node);\n            }\n\n            static createNode(node) {\n                return univis.Node.createNode(node, TreemapNode.new);\n            }\n        }\n\n\n        /*************** Public methods ***************/\n        /**\n         * Resets the treemap to its initial position\n         */\n        that.reset = function reset() {\n            reroot(root);\n        };\n\n        /**\n         * Sets the visualisation in full screen mode\n         *\n         * @param <boolean> isFullScreen indicates if we're in full screen mode\n         */\n        that.setFullScreen = function setFullScreen(isFullScreen) {\n            // the delay is because the event fires before we're in fullscreen\n            // so the height en width functions don't give a correct result\n            // without the delay\n            setTimeout(function () {\n                let [w, h] = [settings.width, settings.height];\n                if (isFullScreen) {\n                    w = $(window).width();\n                    h = $(window).height() - 44;\n                }\n                resize(w, h);\n            }, 1000);\n        };\n\n        // initialize the object\n        init();\n\n        return that;\n    };\n\n    function Plugin(userData, option) {\n        return this.each(function () {\n            let $this = $(this);\n            let data = $this.data('vis.treemap');\n            let options = $.extend({}, $this.data(), typeof option === 'object' && option);\n\n            if (!data) {\n                $this.data('vis.treemap', (data = new TreeMap(this, userData, options)));\n            }\n            if (typeof option === 'string') {\n                data[option]();\n            }\n        });\n    }\n\n    $.fn.treemap = Plugin;\n    $.fn.treemap.Constructor = TreeMap;\n})();\n;/**\n * Zoomable treeview, inspiration from\n * - http://bl.ocks.org/mbostock/4339083\n * - https://gist.github.com/robschmuecker/7880033\n * - http://www.brightpointinc.com/interactive/budget/index.html?source=d3js\n */\n(function () {\n    var TreeView = function TreeView(element, data, options = {}) {\n        let that = {};\n\n        const MARGIN = {\n                top: 5,\n                right: 5,\n                bottom: 5,\n                left: 5\n            },\n            DURATION = 750,\n            COLOR_SCALE = d3.scale.category10(),\n            DEFAULTS = {\n                height: 300,\n                width: 600,\n                nodeDistance: 180,\n                levelsToExpand: 2,\n                minNodeSize: 2,\n                maxNodeSize: 105,\n\n                countAccessor: d => d.data.count,\n\n                colors: d => COLOR_SCALE(d.name),\n                nodeFillColor: nodeFillColor,\n                nodeStrokeColor: nodeStrokeColor,\n                linkStrokeColor: linkStrokeColor,\n\n                enableInnerArcs: true,\n                enableExpandOnClick: true,\n                enableRightClick: true,\n\n                enableLabels: true,\n                getLabel: d => d.name,\n\n                enableTooltips: true,\n                getTooltip: getTooltip,\n                getTooltipTitle: getTooltipTitle,\n                getTooltipText: getTooltipText\n            };\n\n        let settings;\n\n        let visibleRoot,\n            tooltipTimer;\n\n        let nodeId = 0,\n            root;\n\n        let tree,\n            tooltip,\n            diagonal,\n            widthScale,\n            innerArc,\n            zoomListener,\n            svg;\n\n        function init() {\n            settings = Object.assign({}, DEFAULTS, options);\n\n            settings.width = settings.width - MARGIN.right - MARGIN.left;\n            settings.height = settings.height - MARGIN.top - MARGIN.bottom;\n\n            if (settings.enableTooltips) {\n                initTooltip();\n            }\n\n            if (settings.enableInnerArcs) {\n                initInnerArcs();\n            }\n\n            tree = d3.layout.tree()\n                .nodeSize([2, 10])\n                .separation((a, b) => {\n                    let width = (nodeSize(a) + nodeSize(b)),\n                        distance = width / 2 + 4;\n                    return (a.parent === b.parent) ? distance : distance + 4;\n                });\n\n            diagonal = d3.svg.diagonal().projection(d => [d.y, d.x]);\n\n            widthScale = d3.scale.linear().range([settings.minNodeSize, settings.maxNodeSize]);\n\n            // define the zoomListener which calls the zoom function on the \"zoom\" event constrained within the scaleExtents\n            zoomListener = d3.behavior.zoom()\n                .scaleExtent([0.1, 3])\n                .on(\"zoom\", () => {\n                    svg.attr(\"transform\", `translate(${d3.event.translate})scale(${d3.event.scale})`);\n                });\n\n            svg = d3.select(element).append(\"svg\")\n                .attr(\"version\", \"1.1\")\n                .attr(\"xmlns\", \"http://www.w3.org/2000/svg\")\n                .attr(\"viewBox\", `0 0 ${settings.width + MARGIN.right + MARGIN.left} ${settings.height + MARGIN.top + MARGIN.bottom}`)\n                .attr(\"width\", settings.width + MARGIN.right + MARGIN.left)\n                .attr(\"height\", settings.height + MARGIN.top + MARGIN.bottom)\n                .call(zoomListener)\n                .append(\"g\")\n                .attr(\"transform\", `translate(${MARGIN.left},${MARGIN.top})`)\n                .append(\"g\");\n\n            draw(TreeviewNode.createNode(data));\n        }\n\n        function initTooltip() {\n            tooltip = d3.select(\"body\")\n                .append(\"div\")\n                .attr(\"id\", element.id + \"-tooltip\")\n                .attr(\"class\", \"tip\")\n                .style(\"position\", \"absolute\")\n                .style(\"z-index\", \"10\")\n                .style(\"visibility\", \"hidden\")\n                .style(\"background-color\", \"white\")\n                .style(\"padding\", \"2px\")\n                .style(\"border\", \"1px solid #dddddd\")\n                .style(\"border-radius\", \"3px;\");\n        }\n\n        function initInnerArcs() {\n            let arcScale = d3.scale.linear().range([0, 2 * Math.PI]);\n\n            innerArc = d3.svg.arc()\n                .outerRadius(nodeSize)\n                .startAngle(0)\n                .endAngle(d => arcScale(d.data.self_count / d.data.count) || 0);\n        }\n\n        function draw(data) {\n            widthScale.domain([0, data.data.count]);\n\n            root = data;\n            root.x0 = settings.height / 2;\n            root.y0 = 0;\n\n            // set everything visible\n            root.setSelected(true);\n\n            root.children.forEach((d, i) => {\n                d.color = d3.functor(settings.colors).call(this, d, i);\n                d.setRecursiveProperty(\"color\", d.color);\n            });\n\n            if (settings.enableExpandOnClick) {\n                root.collapseAll();\n                root.expand();\n            } else {\n                root.expandAll();\n            }\n\n            update(root);\n            centerNode(root);\n        }\n\n        function update(source) {\n            // Compute the new tree layout.\n            let nodes = tree.nodes(root).reverse(),\n                links = tree.links(nodes);\n\n            // Normalize for fixed-depth.\n            nodes.forEach(d => {\n                d.y = d.depth * settings.nodeDistance;\n            });\n\n            // Update the nodes…\n            let node = svg.selectAll(\"g.node\")\n                .data(nodes, d => d.id || (d.id = ++nodeId));\n\n            // Enter any new nodes at the parent's previous position.\n            let nodeEnter = node.enter().append(\"g\")\n                .attr(\"class\", \"node\")\n                .style(\"cursor\", \"pointer\")\n                .attr(\"transform\", d => `translate(${source.y || 0},${source.x0 || 0})`)\n                .on(\"click\", click)\n                .on(\"mouseover\", tooltipIn)\n                .on(\"mouseout\", tooltipOut)\n                .on(\"contextmenu\", rightClick);\n\n            nodeEnter.append(\"circle\")\n                .attr(\"r\", 1e-6)\n                .style(\"stroke-width\", \"1.5px\")\n                .style(\"stroke\", settings.nodeStrokeColor)\n                .style(\"fill\", settings.nodeFillColor);\n\n            if (settings.enableInnerArcs) {\n                nodeEnter.append(\"path\")\n                    .attr(\"d\", innerArc)\n                    .style(\"fill\", settings.nodeStrokeColor)\n                    .style(\"fill-opacity\", 0);\n            }\n\n            if (settings.enableLabels) {\n                nodeEnter.append(\"text\")\n                    .attr(\"x\", d => d.isLeaf() ? 10 : -10)\n                    .attr(\"dy\", \".35em\")\n                    .attr(\"text-anchor\", d => d.isLeaf() ? \"start\" : \"end\")\n                    .text(settings.getLabel)\n                    .style(\"font\", \"10px sans-serif\")\n                    .style(\"fill-opacity\", 1e-6);\n            }\n\n            // Transition nodes to their new position.\n            let nodeUpdate = node.transition()\n                .duration(DURATION)\n                .attr(\"transform\", d => `translate(${d.y},${d.x})`);\n\n            nodeUpdate.select(\"circle\")\n                .attr(\"r\", nodeSize)\n                .style(\"fill-opacity\", d => d._children ? 1 : 0)\n                .style(\"stroke\", settings.nodeStrokeColor)\n                .style(\"fill\", settings.nodeFillColor);\n\n            if (settings.enableLabels) {\n                nodeUpdate.select(\"text\")\n                    .style(\"fill-opacity\", 1);\n            }\n\n            if (settings.enableInnerArcs) {\n                nodeUpdate.select(\"path\")\n                    .duration(DURATION)\n                    .attr(\"d\", innerArc)\n                    .style(\"fill-opacity\", 0.8);\n            }\n\n            // Transition exiting nodes to the parent's new position.\n            let nodeExit = node.exit().transition()\n                .duration(DURATION)\n                .attr(\"transform\", d => `translate(${source.y},${source.x})`)\n                .remove();\n\n            nodeExit.select(\"circle\")\n                .attr(\"r\", 1e-6);\n\n            nodeExit.select(\"path\")\n                .style(\"fill-opacity\", 1e-6);\n\n            nodeExit.select(\"text\")\n                .style(\"fill-opacity\", 1e-6);\n\n            // Update the links…\n            let link = svg.selectAll(\"path.link\")\n                .data(links, d => d.target.id);\n\n            // Enter any new links at the parent's previous position.\n            link.enter().insert(\"path\", \"g\")\n                .attr(\"class\", \"link\")\n                .style(\"fill\", \"none\")\n                .style(\"stroke-opacity\", \"0.5\")\n                .style(\"stroke-linecap\", \"round\")\n                .style(\"stroke\", settings.linkStrokeColor)\n                .style(\"stroke-width\", 1e-6)\n                .attr(\"d\", d => {\n                    let o = {\n                        x: (source.x0 || 0),\n                        y: (source.y0 || 0)\n                    };\n                    return diagonal({\n                        source: o,\n                        target: o\n                    });\n                });\n\n            // Transition links to their new position.\n            link.transition()\n                .duration(DURATION)\n                .attr(\"d\", diagonal)\n                .style(\"stroke\", settings.linkStrokeColor)\n                .style(\"stroke-width\", d => {\n                    if (d.source.selected) {\n                        return widthScale(d.target.data.count) + \"px\";\n                    } else {\n                        return \"4px\";\n                    }\n                });\n\n            // Transition exiting nodes to the parent's new position.\n            link.exit().transition()\n                .duration(DURATION)\n                .style(\"stroke-width\", 1e-6)\n                .attr(\"d\", d => {\n                    let o = {\n                        x: source.x,\n                        y: source.y\n                    };\n                    return diagonal({\n                        source: o,\n                        target: o\n                    });\n                })\n                .remove();\n\n            // Stash the old positions for transition.\n            nodes.forEach(d => {\n                [d.x0, d.y0] = [d.x, d.y];\n            });\n        }\n\n        function nodeSize(d) {\n            if (d.selected) {\n                return widthScale(d.data.count) / 2;\n            } else {\n                return 2;\n            }\n        }\n\n        // Toggle children on click.\n        function click(d) {\n            if (!settings.enableExpandOnClick) {\n                return;\n            }\n\n            // check if click is triggered by panning on a node\n            if (d3.event.defaultPrevented) {\n                return;\n            }\n\n            if (d3.event.shiftKey) {\n                d.expandAll();\n            } else if (d.children) {\n                d.collapse();\n            } else {\n                d.expand();\n            }\n            update(d);\n            centerNode(d);\n        }\n\n        function rightClick(d) {\n            if (settings.enableRightClick) {\n                reroot(d);\n            }\n        }\n\n        // Sets the width of the right clicked node to 100%\n        function reroot(d) {\n            if (d === visibleRoot && d !== root) {\n                reroot(root);\n                return;\n            }\n            visibleRoot = d;\n\n            // set Selection properties\n            root.setSelected(false);\n            d.setSelected(true);\n\n            // scale the lines\n            widthScale.domain([0, d.data.count]);\n\n            d.expand();\n\n            // redraw\n            if (d3.event !== null) {\n                d3.event.preventDefault();\n            }\n            update(d);\n            centerNode(d);\n        }\n\n        // Center a node\n        function centerNode(source) {\n            let scale = zoomListener.scale(),\n                [x, y] = [-source.y0, -source.x0];\n            x = x * scale + settings.width / 4;\n            y = y * scale + settings.height / 2;\n            svg.transition()\n                .duration(DURATION)\n                .attr(\"transform\", `translate(${x},${y})scale(${scale})`);\n            zoomListener.scale(scale);\n            zoomListener.translate([x, y]);\n        }\n\n        // tooltip functions\n        function tooltipIn(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            tooltip.html(settings.getTooltip(d))\n                .style(\"top\", (d3.event.pageY - 5) + \"px\")\n                .style(\"left\", (d3.event.pageX + 15) + \"px\");\n\n            tooltipTimer = setTimeout(() => {\n                tooltip.style(\"visibility\", \"visible\");\n            }, 1000);\n\n        }\n\n        function tooltipOut(d, i) {\n            if (!settings.enableTooltips) {\n                return;\n            }\n            clearTimeout(tooltipTimer);\n            tooltip.style(\"visibility\", \"hidden\");\n        }\n\n        /************** Default methods ***************/\n        // set fill color\n        function nodeFillColor(d) {\n            if (d.selected) {\n                return d._children ? d.color || \"#aaa\" : \"#fff\";\n            } else {\n                return \"#aaa\";\n            }\n        }\n\n        // set node stroke color\n        function nodeStrokeColor(d) {\n            if (d.selected) {\n                return d.color || \"#aaa\";\n            } else {\n                return \"#aaa\";\n            }\n        }\n\n        // set link stroke color\n        function linkStrokeColor(d) {\n            if (d.source.selected) {\n                return d.target.color;\n            } else {\n                return \"#aaa\";\n            }\n        }\n\n        function getTooltip(d) {\n            return `<h3 class='tip-title'>${settings.getTooltipTitle(d)}</h3><p>${settings.getTooltipText(d)}</p>`;\n        }\n\n        function getTooltipTitle(d) {\n            return d.name;\n        }\n\n        function getTooltipText(d) {\n            return `${d.data.count} hits`;\n        }\n\n        class TreeviewNode extends univis.Node {\n            constructor(node = {}) {\n                super(node);\n                this.setCount();\n            }\n\n            static new(node = {}) {\n                return new TreeviewNode(node);\n            }\n\n            static createNode(node) {\n                return univis.Node.createNode(node, TreeviewNode.new);\n            }\n\n            setCount() {\n                if (settings.countAccessor(this)) {\n                    this.data.count = settings.countAccessor(this);\n                } else if (this.children) {\n                    this.data.count = this.children.reduce((sum, c) => sum + c.data.count, 0);\n                } else {\n                    this.data.count = 0;\n                }\n            }\n\n            setSelected(value) {\n                this.setRecursiveProperty(\"selected\", value);\n            }\n\n            // collapse everything\n            collapseAll() {\n                if (this.children && this.children.length === 0) {\n                    this.children = null;\n                }\n                if (this.children) {\n                    this._children = this.children;\n                    this._children.forEach(c => {\n                        c.collapseAll();\n                    });\n                    this.children = null;\n                }\n            }\n\n            // Collapses a node\n            collapse() {\n                if (this.children) {\n                    this._children = this.children;\n                    this.children = null;\n                }\n            }\n\n            expandAll() {\n                this.expand(100);\n            }\n\n            // Expands a node and its children\n            expand(i = settings.levelsToExpand) {\n                if (i > 0) {\n                    if (this._children) {\n                        this.children = this._children;\n                        this._children = null;\n                    }\n                    if (this.children) {\n                        this.children.forEach(c => {\n                            c.expand(i - 1);\n                        });\n                    }\n                }\n            }\n        }\n\n        /*************** Public methods ***************/\n        that.reset = function reset() {\n            zoomListener.scale(1);\n            reroot(root);\n        };\n\n        // initialize the object\n        init();\n\n        // return the object\n        return that;\n    };\n\n    function Plugin(userData, option) {\n        return this.each(function () {\n            let $this = $(this);\n            let data = $this.data('vis.treeview');\n            let options = $.extend({}, $this.data(), typeof option === 'object' && option);\n\n            if (!data) {\n                $this.data('vis.treeview', (data = new TreeView(this, userData, options)));\n            }\n            if (typeof option === 'string') {\n                data[option]();\n            }\n        });\n    }\n\n    $.fn.treeview = Plugin;\n    $.fn.treeview.Constructor = TreeView;\n})();\n"]}
\ No newline at end of file
diff --git a/dist/unipept-visualizations.js b/dist/unipept-visualizations.js
index 0355e69..cfd7f22 100644
--- a/dist/unipept-visualizations.js
+++ b/dist/unipept-visualizations.js
@@ -1,4 +1,67 @@
-/**
+/*jshint -W079 */
+let univis = univis || {};
+
+univis.Node = class Node {
+    constructor(node = {}) {
+        this.data = {};
+        Object.assign(this, node);
+    }
+
+    static new(node = {}) {
+        return new Node(node);
+    }
+
+    static createNode(node, construct = Node.new) {
+        if (node.children) {
+            node.children = node.children.map(n => Node.createNode(n, construct));
+        }
+        return construct.call(null, node);
+    }
+
+    // sets a property for a node and all its children
+    setRecursiveProperty(property, value) {
+        this[property] = value;
+        if (this.children) {
+            this.children.forEach(c => {
+                c.setRecursiveProperty(property, value);
+            });
+        } else if (this._children) {
+            this._children.forEach(c => {
+                c.setRecursiveProperty(property, value);
+            });
+        }
+    }
+
+    // Returns true if a node is a leaf
+    isLeaf() {
+        return (!this.children && !this._children) ||
+            (this.children && this.children.length === 0) ||
+            (this._children && this._children.length === 0);
+    }
+
+    getHeight() {
+        if (this._height === undefined) {
+            if (this.isLeaf()) {
+                this._height = 0;
+            } else {
+                this._height = d3.max(this.children, c => c.getHeight()) + 1;
+            }
+        }
+        return this._height;
+    }
+
+    getDepth() {
+        if (this._depth === undefined) {
+            if (this.parent === undefined) {
+                this._depth = 0;
+            } else {
+                this._depth = this.parent.getDepth() + 1;
+            }
+        }
+        return this._depth;
+    }
+};
+;/**
  * Interactive treemap
  */
 (function () {
@@ -53,7 +116,7 @@
         function init() {
             settings = Object.assign({}, DEFAULTS, options);
 
-            root = Node.createNode(data);
+            root = TreemapNode.createNode(data);
 
             settings.width = settings.width - MARGIN.right - MARGIN.left;
             settings.height = settings.height - MARGIN.top - MARGIN.bottom;
@@ -308,44 +371,13 @@
             return rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114;
         }
 
-        class Node {
-            constructor() {
-                this.data = {};
+        class TreemapNode extends univis.Node {
+            static new(node = {}) {
+                return new TreemapNode(node);
             }
 
             static createNode(node) {
-                if (node.children) {
-                    node.children = node.children.map(n => Node.createNode(n));
-                }
-                return Object.assign(new Node(), node);
-            }
-
-            getHeight() {
-                if (this._height === undefined) {
-                    if (this.isLeaf()) {
-                        this._height = 0;
-                    } else {
-                        this._height = d3.max(this.children, c => c.getHeight()) + 1;
-                    }
-                }
-                return this._height;
-            }
-
-            getDepth() {
-                if (this._depth === undefined) {
-                    if (this.parent === undefined) {
-                        this._depth = 0;
-                    } else {
-                        this._depth = this.parent.getDepth() + 1;
-                    }
-                }
-                return this._depth;
-            }
-
-            isLeaf() {
-                return (!this.children && !this._children) ||
-                    (this.children && this.children.length === 0) ||
-                    (this._children && this._children.length === 0);
+                return univis.Node.createNode(node, TreemapNode.new);
             }
         }
 
@@ -507,7 +539,7 @@
                 .attr("transform", `translate(${MARGIN.left},${MARGIN.top})`)
                 .append("g");
 
-            draw(Node.createNode(data));
+            draw(TreeviewNode.createNode(data));
         }
 
         function initTooltip() {
@@ -598,9 +630,9 @@
 
             if (settings.enableLabels) {
                 nodeEnter.append("text")
-                    .attr("x", d => d.isLeaf() ? -10 : 10)
+                    .attr("x", d => d.isLeaf() ? 10 : -10)
                     .attr("dy", ".35em")
-                    .attr("text-anchor", d => d.isLeaf() ? "end" : "start")
+                    .attr("text-anchor", d => d.isLeaf() ? "start" : "end")
                     .text(settings.getLabel)
                     .style("font", "10px sans-serif")
                     .style("fill-opacity", 1e-6);
@@ -839,49 +871,30 @@
             return `${d.data.count} hits`;
         }
 
-        class Node {
-            constructor() {
-                this.data = {};
+        class TreeviewNode extends univis.Node {
+            constructor(node = {}) {
+                super(node);
+                this.setCount();
+            }
+
+            static new(node = {}) {
+                return new TreeviewNode(node);
             }
 
             static createNode(node) {
-                if (node.children) {
-                    node.children = node.children.map(n => Node.createNode(n));
-                }
-                let obj = Object.assign(new Node(), node);
-                obj.setCount();
-                return obj;
+                return univis.Node.createNode(node, TreeviewNode.new);
             }
 
             setCount() {
                 if (settings.countAccessor(this)) {
                     this.data.count = settings.countAccessor(this);
-                } else if (this.children){
+                } else if (this.children) {
                     this.data.count = this.children.reduce((sum, c) => sum + c.data.count, 0);
                 } else {
                     this.data.count = 0;
                 }
             }
 
-            // sets a property for a node and all its children
-            setRecursiveProperty(property, value) {
-                this[property] = value;
-                if (this.children) {
-                    this.children.forEach(c => {
-                        c.setRecursiveProperty(property, value);
-                    });
-                } else if (this._children) {
-                    this._children.forEach(c => {
-                        c.setRecursiveProperty(property, value);
-                    });
-                }
-            }
-
-            // Returns true if a node is a leaf
-            isLeaf() {
-                return this.children || this._children;
-            }
-
             setSelected(value) {
                 this.setRecursiveProperty("selected", value);
             }
diff --git a/dist/unipept-visualizations.min.js b/dist/unipept-visualizations.min.js
index 9fa3b33..905c64f 100644
--- a/dist/unipept-visualizations.min.js
+++ b/dist/unipept-visualizations.min.js
@@ -1,2 +1,2 @@
 /*! unipept-visualizations 1.1.0 02-07-2016 */
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a.data.self_count},rerootCallback:void 0,getBreadcrumbTooltip:function(a){return a.name},colorRoot:"#104B7D",colorLeaf:"#fdffcc",colorBreadcrumbs:"#FF8F00",labelHeight:10,getLabel:function(a){return a.name},enableTooltips:!0,getTooltip:o,getTooltipTitle:p,getTooltipText:q},x=void 0,y=void 0,z=0,A=void 0,B=void 0,C=void 0,D=void 0,E=void 0,F=void 0,G=function(a){function b(){return _classCallCheck(this,b),_possibleConstructorReturn(this,Object.getPrototypeOf(b).apply(this,arguments))}return _inherits(b,a),_createClass(b,null,[{key:"new",value:function(){var a=arguments.length<=0||void 0===arguments[0]?{}:arguments[0];return new b(a)}},{key:"createNode",value:function(a){return univis.Node.createNode(a,b["new"])}}]),b}(univis.Node);return u.reset=function(){h(y)},u.setFullScreen=function(a){setTimeout(function(){var b=x.width,c=x.height;a&&(b=$(window).width(),c=$(window).height()-44),k(b,c)},1e3)},c(),u};$.fn.treemap=a,$.fn.treemap.Constructor=b}(),function(){function a(a,c){return this.each(function(){var d=$(this),e=d.data("vis.treeview"),f=$.extend({},d.data(),"object"===("undefined"==typeof c?"undefined":_typeof(c))&&c);e||d.data("vis.treeview",e=new b(this,a,f)),"string"==typeof c&&e[c]()})}var b=function(a,b){function c(){A=_extends({},z,u),A.width=A.width-w.right-w.left,A.height=A.height-w.top-w.bottom,A.enableTooltips&&d(),A.enableInnerArcs&&e(),F=d3.layout.tree().nodeSize([2,10]).separation(function(a,b){var c=h(a)+h(b),d=c/2+4;return a.parent===b.parent?d:d+4}),H=d3.svg.diagonal().projection(function(a){return[a.y,a.x]}),I=d3.scale.linear().range([A.minNodeSize,A.maxNodeSize]),K=d3.behavior.zoom().scaleExtent([.1,3]).on("zoom",function(){L.attr("transform","translate("+d3.event.translate+")scale("+d3.event.scale+")")}),L=d3.select(a).append("svg").attr("version","1.1").attr("xmlns","http://www.w3.org/2000/svg").attr("viewBox","0 0 "+(A.width+w.right+w.left)+" "+(A.height+w.top+w.bottom)).attr("width",A.width+w.right+w.left).attr("height",A.height+w.top+w.bottom).call(K).append("g").attr("transform","translate("+w.left+","+w.top+")").append("g"),f(M.createNode(b))}function d(){G=d3.select("body").append("div").attr("id",a.id+"-tooltip").attr("class","tip").style("position","absolute").style("z-index","10").style("visibility","hidden").style("background-color","white").style("padding","2px").style("border","1px solid #dddddd").style("border-radius","3px;")}function e(){var a=d3.scale.linear().range([0,2*Math.PI]);J=d3.svg.arc().outerRadius(h).startAngle(0).endAngle(function(b){return a(b.data.self_count/b.data.count)||0})}function f(a){var b=this;I.domain([0,a.data.count]),E=a,E.x0=A.height/2,E.y0=0,E.setSelected(!0),E.children.forEach(function(a,c){a.color=d3.functor(A.colors).call(b,a,c),a.setRecursiveProperty("color",a.color)}),A.enableExpandOnClick?(E.collapseAll(),E.expand()):E.expandAll(),g(E),l(E)}function g(a){var b=F.nodes(E).reverse(),c=F.links(b);b.forEach(function(a){a.y=a.depth*A.nodeDistance});var d=L.selectAll("g.node").data(b,function(a){return a.id||(a.id=++D)}),e=d.enter().append("g").attr("class","node").style("cursor","pointer").attr("transform",function(b){return"translate("+(a.y||0)+","+(a.x0||0)+")"}).on("click",i).on("mouseover",m).on("mouseout",n).on("contextmenu",j);e.append("circle").attr("r",1e-6).style("stroke-width","1.5px").style("stroke",A.nodeStrokeColor).style("fill",A.nodeFillColor),A.enableInnerArcs&&e.append("path").attr("d",J).style("fill",A.nodeStrokeColor).style("fill-opacity",0),A.enableLabels&&e.append("text").attr("x",function(a){return a.isLeaf()?10:-10}).attr("dy",".35em").attr("text-anchor",function(a){return a.isLeaf()?"start":"end"}).text(A.getLabel).style("font","10px sans-serif").style("fill-opacity",1e-6);var f=d.transition().duration(x).attr("transform",function(a){return"translate("+a.y+","+a.x+")"});f.select("circle").attr("r",h).style("fill-opacity",function(a){return a._children?1:0}).style("stroke",A.nodeStrokeColor).style("fill",A.nodeFillColor),A.enableLabels&&f.select("text").style("fill-opacity",1),A.enableInnerArcs&&f.select("path").duration(x).attr("d",J).style("fill-opacity",.8);var g=d.exit().transition().duration(x).attr("transform",function(b){return"translate("+a.y+","+a.x+")"}).remove();g.select("circle").attr("r",1e-6),g.select("path").style("fill-opacity",1e-6),g.select("text").style("fill-opacity",1e-6);var k=L.selectAll("path.link").data(c,function(a){return a.target.id});k.enter().insert("path","g").attr("class","link").style("fill","none").style("stroke-opacity","0.5").style("stroke-linecap","round").style("stroke",A.linkStrokeColor).style("stroke-width",1e-6).attr("d",function(b){var c={x:a.x0||0,y:a.y0||0};return H({source:c,target:c})}),k.transition().duration(x).attr("d",H).style("stroke",A.linkStrokeColor).style("stroke-width",function(a){return a.source.selected?I(a.target.data.count)+"px":"4px"}),k.exit().transition().duration(x).style("stroke-width",1e-6).attr("d",function(b){var c={x:a.x,y:a.y};return H({source:c,target:c})}).remove(),b.forEach(function(a){var b=[a.x,a.y];a.x0=b[0],a.y0=b[1]})}function h(a){return a.selected?I(a.data.count)/2:2}function i(a){A.enableExpandOnClick&&(d3.event.defaultPrevented||(d3.event.shiftKey?a.expandAll():a.children?a.collapse():a.expand(),g(a),l(a)))}function j(a){A.enableRightClick&&k(a)}function k(a){return a===B&&a!==E?void k(E):(B=a,E.setSelected(!1),a.setSelected(!0),I.domain([0,a.data.count]),a.expand(),null!==d3.event&&d3.event.preventDefault(),g(a),void l(a))}function l(a){var b=K.scale(),c=-a.y0,d=-a.x0;c=c*b+A.width/4,d=d*b+A.height/2,L.transition().duration(x).attr("transform","translate("+c+","+d+")scale("+b+")"),K.scale(b),K.translate([c,d])}function m(a,b){A.enableTooltips&&(G.html(A.getTooltip(a)).style("top",d3.event.pageY-5+"px").style("left",d3.event.pageX+15+"px"),C=setTimeout(function(){G.style("visibility","visible")},1e3))}function n(a,b){A.enableTooltips&&(clearTimeout(C),G.style("visibility","hidden"))}function o(a){return a.selected?a._children?a.color||"#aaa":"#fff":"#aaa"}function p(a){return a.selected?a.color||"#aaa":"#aaa"}function q(a){return a.source.selected?a.target.color:"#aaa"}function r(a){return"<h3 class='tip-title'>"+A.getTooltipTitle(a)+"</h3><p>"+A.getTooltipText(a)+"</p>"}function s(a){return a.name}function t(a){return a.data.count+" hits"}var u=arguments.length<=2||void 0===arguments[2]?{}:arguments[2],v={},w={top:5,right:5,bottom:5,left:5},x=750,y=d3.scale.category10(),z={height:300,width:600,nodeDistance:180,levelsToExpand:2,minNodeSize:2,maxNodeSize:105,countAccessor:function(a){return a.data.count},colors:function(a){return y(a.name)},nodeFillColor:o,nodeStrokeColor:p,linkStrokeColor:q,enableInnerArcs:!0,enableExpandOnClick:!0,enableRightClick:!0,enableLabels:!0,getLabel:function(a){return a.name},enableTooltips:!0,getTooltip:r,getTooltipTitle:s,getTooltipText:t},A=void 0,B=void 0,C=void 0,D=0,E=void 0,F=void 0,G=void 0,H=void 0,I=void 0,J=void 0,K=void 0,L=void 0,M=function(a){function b(){var a=arguments.length<=0||void 0===arguments[0]?{}:arguments[0];_classCallCheck(this,b);var c=_possibleConstructorReturn(this,Object.getPrototypeOf(b).call(this,a));return c.setCount(),c}return _inherits(b,a),_createClass(b,[{key:"setCount",value:function(){A.countAccessor(this)?this.data.count=A.countAccessor(this):this.children?this.data.count=this.children.reduce(function(a,b){return a+b.data.count},0):this.data.count=0}},{key:"setSelected",value:function(a){this.setRecursiveProperty("selected",a)}},{key:"collapseAll",value:function(){this.children&&0===this.children.length&&(this.children=null),this.children&&(this._children=this.children,this._children.forEach(function(a){a.collapseAll()}),this.children=null)}},{key:"collapse",value:function(){this.children&&(this._children=this.children,this.children=null)}},{key:"expandAll",value:function(){this.expand(100)}},{key:"expand",value:function(){var a=arguments.length<=0||void 0===arguments[0]?A.levelsToExpand:arguments[0];a>0&&(this._children&&(this.children=this._children,this._children=null),this.children&&this.children.forEach(function(b){b.expand(a-1)}))}}],[{key:"new",value:function(){var a=arguments.length<=0||void 0===arguments[0]?{}:arguments[0];return new b(a)}},{key:"createNode",value:function(a){return univis.Node.createNode(a,b["new"])}}]),b}(univis.Node);return v.reset=function(){K.scale(1),k(E)},c(),v};$.fn.treeview=a,$.fn.treeview.Constructor=b}();
\ No newline at end of file
diff --git a/src/node.js b/src/node.js
new file mode 100644
index 0000000..3a3f7d4
--- /dev/null
+++ b/src/node.js
@@ -0,0 +1,63 @@
+/*jshint -W079 */
+let univis = univis || {};
+
+univis.Node = class Node {
+    constructor(node = {}) {
+        this.data = {};
+        Object.assign(this, node);
+    }
+
+    static new(node = {}) {
+        return new Node(node);
+    }
+
+    static createNode(node, construct = Node.new) {
+        if (node.children) {
+            node.children = node.children.map(n => Node.createNode(n, construct));
+        }
+        return construct.call(null, node);
+    }
+
+    // sets a property for a node and all its children
+    setRecursiveProperty(property, value) {
+        this[property] = value;
+        if (this.children) {
+            this.children.forEach(c => {
+                c.setRecursiveProperty(property, value);
+            });
+        } else if (this._children) {
+            this._children.forEach(c => {
+                c.setRecursiveProperty(property, value);
+            });
+        }
+    }
+
+    // Returns true if a node is a leaf
+    isLeaf() {
+        return (!this.children && !this._children) ||
+            (this.children && this.children.length === 0) ||
+            (this._children && this._children.length === 0);
+    }
+
+    getHeight() {
+        if (this._height === undefined) {
+            if (this.isLeaf()) {
+                this._height = 0;
+            } else {
+                this._height = d3.max(this.children, c => c.getHeight()) + 1;
+            }
+        }
+        return this._height;
+    }
+
+    getDepth() {
+        if (this._depth === undefined) {
+            if (this.parent === undefined) {
+                this._depth = 0;
+            } else {
+                this._depth = this.parent.getDepth() + 1;
+            }
+        }
+        return this._depth;
+    }
+};
diff --git a/src/treemap.js b/src/treemap.js
index 1f8e18b..bea8393 100644
--- a/src/treemap.js
+++ b/src/treemap.js
@@ -53,7 +53,7 @@
         function init() {
             settings = Object.assign({}, DEFAULTS, options);
 
-            root = Node.createNode(data);
+            root = TreemapNode.createNode(data);
 
             settings.width = settings.width - MARGIN.right - MARGIN.left;
             settings.height = settings.height - MARGIN.top - MARGIN.bottom;
@@ -308,44 +308,13 @@
             return rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114;
         }
 
-        class Node {
-            constructor() {
-                this.data = {};
+        class TreemapNode extends univis.Node {
+            static new(node = {}) {
+                return new TreemapNode(node);
             }
 
             static createNode(node) {
-                if (node.children) {
-                    node.children = node.children.map(n => Node.createNode(n));
-                }
-                return Object.assign(new Node(), node);
-            }
-
-            getHeight() {
-                if (this._height === undefined) {
-                    if (this.isLeaf()) {
-                        this._height = 0;
-                    } else {
-                        this._height = d3.max(this.children, c => c.getHeight()) + 1;
-                    }
-                }
-                return this._height;
-            }
-
-            getDepth() {
-                if (this._depth === undefined) {
-                    if (this.parent === undefined) {
-                        this._depth = 0;
-                    } else {
-                        this._depth = this.parent.getDepth() + 1;
-                    }
-                }
-                return this._depth;
-            }
-
-            isLeaf() {
-                return (!this.children && !this._children) ||
-                    (this.children && this.children.length === 0) ||
-                    (this._children && this._children.length === 0);
+                return univis.Node.createNode(node, TreemapNode.new);
             }
         }
 
diff --git a/src/treeview.js b/src/treeview.js
index 2c3a43c..fae08b1 100644
--- a/src/treeview.js
+++ b/src/treeview.js
@@ -104,7 +104,7 @@
                 .attr("transform", `translate(${MARGIN.left},${MARGIN.top})`)
                 .append("g");
 
-            draw(Node.createNode(data));
+            draw(TreeviewNode.createNode(data));
         }
 
         function initTooltip() {
@@ -195,9 +195,9 @@
 
             if (settings.enableLabels) {
                 nodeEnter.append("text")
-                    .attr("x", d => d.isLeaf() ? -10 : 10)
+                    .attr("x", d => d.isLeaf() ? 10 : -10)
                     .attr("dy", ".35em")
-                    .attr("text-anchor", d => d.isLeaf() ? "end" : "start")
+                    .attr("text-anchor", d => d.isLeaf() ? "start" : "end")
                     .text(settings.getLabel)
                     .style("font", "10px sans-serif")
                     .style("fill-opacity", 1e-6);
@@ -436,49 +436,30 @@
             return `${d.data.count} hits`;
         }
 
-        class Node {
-            constructor() {
-                this.data = {};
+        class TreeviewNode extends univis.Node {
+            constructor(node = {}) {
+                super(node);
+                this.setCount();
+            }
+
+            static new(node = {}) {
+                return new TreeviewNode(node);
             }
 
             static createNode(node) {
-                if (node.children) {
-                    node.children = node.children.map(n => Node.createNode(n));
-                }
-                let obj = Object.assign(new Node(), node);
-                obj.setCount();
-                return obj;
+                return univis.Node.createNode(node, TreeviewNode.new);
             }
 
             setCount() {
                 if (settings.countAccessor(this)) {
                     this.data.count = settings.countAccessor(this);
-                } else if (this.children){
+                } else if (this.children) {
                     this.data.count = this.children.reduce((sum, c) => sum + c.data.count, 0);
                 } else {
                     this.data.count = 0;
                 }
             }
 
-            // sets a property for a node and all its children
-            setRecursiveProperty(property, value) {
-                this[property] = value;
-                if (this.children) {
-                    this.children.forEach(c => {
-                        c.setRecursiveProperty(property, value);
-                    });
-                } else if (this._children) {
-                    this._children.forEach(c => {
-                        c.setRecursiveProperty(property, value);
-                    });
-                }
-            }
-
-            // Returns true if a node is a leaf
-            isLeaf() {
-                return this.children || this._children;
-            }
-
             setSelected(value) {
                 this.setRecursiveProperty("selected", value);
             }