devextreme/viz/tree_map/tracker.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (viz/tree_map/tracker.js)
 * Version: 18.1.3
 * Build date: Tue May 15 2018
 *
 * Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
var proto = require("./tree_map.base").prototype,
    Tracker = require("../components/tracker").Tracker,
    expand = require("../core/helpers").expand,
    _parseScalar = require("../core/utils").parseScalar,
    DATA_KEY_BASE = "__treemap_data_",
    dataKeyModifier = 0;
require("./api");
require("./hover");
require("./tooltip");
proto._eventsMap.onClick = {
    name: "click"
};
expand(proto, "_initCore", function() {
    var that = this,
        dataKey = DATA_KEY_BASE + dataKeyModifier++,
        getProxy = function(index) {
            return that._nodes[index].proxy
        };
    that._tracker = new Tracker({
        widget: that,
        root: that._renderer.root,
        getNode: function(id) {
            var proxy = getProxy(id),
                interactWithGroup = _parseScalar(that._getOption("interactWithGroup", true));
            return interactWithGroup && proxy.isLeaf() && proxy.getParent().isActive() ? proxy.getParent() : proxy
        },
        getData: function(e) {
            var target = e.target;
            return ("tspan" === target.tagName ? target.parentNode : target)[dataKey]
        },
        getProxy: getProxy,
        click: function(e) {
            that._eventTrigger("click", e)
        }
    });
    that._handlers.setTrackerData = function(node, element) {
        element.data(dataKey, node._id)
    }
});
expand(proto, "_disposeCore", function() {
    this._tracker.dispose()
});