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import H from '../parts/Globals.js';
var pick = H.pick,
defined = H.defined,
Point = H.Point;
H.NodesMixin = {
// Create a single node that holds information on incoming and outgoing
// links.
createNode: function (id) {
function findById(nodes, id) {
return H.find(nodes, function (node) {
return node.id === id;
});
}
var node = findById(this.nodes, id),
PointClass = this.pointClass,
options;
if (!node) {
options = this.options.nodes && findById(this.options.nodes, id);
node = (new PointClass()).init(
this,
H.extend({
className: 'highcharts-node',
isNode: true,
id: id,
y: 1 // Pass isNull test
}, options)
);
node.linksTo = [];
node.linksFrom = [];
node.formatPrefix = 'node';
node.name = node.name || node.options.id; // for use in formats
// Mass is used in networkgraph:
node.mass = pick(
// Node:
node.options.mass,
node.options.marker && node.options.marker.radius,
// Series:
this.options.marker && this.options.marker.radius,
// Default:
4
);
// Return the largest sum of either the incoming or outgoing links.
node.getSum = function () {
var sumTo = 0,
sumFrom = 0;
node.linksTo.forEach(function (link) {
sumTo += link.weight;
});
node.linksFrom.forEach(function (link) {
sumFrom += link.weight;
});
return Math.max(sumTo, sumFrom);
};
// Get the offset in weight values of a point/link.
node.offset = function (point, coll) {
var offset = 0;
for (var i = 0; i < node[coll].length; i++) {
if (node[coll][i] === point) {
return offset;
}
offset += node[coll][i].weight;
}
};
// Return true if the node has a shape, otherwise all links are
// outgoing.
node.hasShape = function () {
var outgoing = 0;
node.linksTo.forEach(function (link) {
if (link.outgoing) {
outgoing++;
}
});
return !node.linksTo.length || outgoing !== node.linksTo.length;
};
this.nodes.push(node);
}
return node;
},
// Extend generatePoints by adding the nodes, which are Point objects
// but pushed to the this.nodes array.
generatePoints: function () {
var nodeLookup = {},
chart = this.chart;
H.Series.prototype.generatePoints.call(this);
if (!this.nodes) {
this.nodes = []; // List of Point-like node items
}
this.colorCounter = 0;
// Reset links from previous run
this.nodes.forEach(function (node) {
node.linksFrom.length = 0;
node.linksTo.length = 0;
node.level = undefined;
});
// Create the node list and set up links
this.points.forEach(function (point) {
if (defined(point.from)) {
if (!nodeLookup[point.from]) {
nodeLookup[point.from] = this.createNode(point.from);
}
nodeLookup[point.from].linksFrom.push(point);
point.fromNode = nodeLookup[point.from];
// Point color defaults to the fromNode's color
if (chart.styledMode) {
point.colorIndex = pick(
point.options.colorIndex,
nodeLookup[point.from].colorIndex
);
} else {
point.color =
point.options.color || nodeLookup[point.from].color;
}
}
if (defined(point.to)) {
if (!nodeLookup[point.to]) {
nodeLookup[point.to] = this.createNode(point.to);
}
nodeLookup[point.to].linksTo.push(point);
point.toNode = nodeLookup[point.to];
}
point.name = point.name || point.id; // for use in formats
}, this);
// Store lookup table for later use
this.nodeLookup = nodeLookup;
},
// Destroy all nodes on setting new data
setData: function () {
if (this.nodes) {
this.nodes.forEach(function (node) {
node.destroy();
});
this.nodes.length = 0;
}
H.Series.prototype.setData.apply(this, arguments);
},
// Destroy alll nodes and links
destroy: function () {
// Nodes must also be destroyed (#8682, #9300)
this.data = [].concat(this.points || [], this.nodes);
return H.Series.prototype.destroy.apply(this, arguments);
},
// When hovering node, highlight all connected links. When hovering a link,
// highlight all connected nodes.
setNodeState: function () {
var args = arguments,
others = this.isNode ? this.linksTo.concat(this.linksFrom) :
[this.fromNode, this.toNode];
others.forEach(function (linkOrNode) {
Point.prototype.setState.apply(linkOrNode, args);
if (!linkOrNode.isNode) {
if (linkOrNode.fromNode.graphic) {
Point.prototype.setState.apply(linkOrNode.fromNode, args);
}
if (linkOrNode.toNode.graphic) {
Point.prototype.setState.apply(linkOrNode.toNode, args);
}
}
});
Point.prototype.setState.apply(this, args);
}
};