devextreme/esm/viz/tree_map/tracker.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/viz/tree_map/tracker.js)
 * Version: 24.2.6
 * Build date: Mon Mar 17 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
import TreeMapBase from "./tree_map.base";
import {
    Tracker
} from "../components/tracker";
import {
    expand
} from "../core/helpers";
import {
    parseScalar as _parseScalar
} from "../core/utils";
const DATA_KEY_BASE = "__treemap_data_";
let dataKeyModifier = 0;
const proto = TreeMapBase.prototype;
import "./api";
import "./hover";
import "./tooltip";
proto._eventsMap.onClick = {
    name: "click"
};
const getDataKey = function() {
    const dataKey = DATA_KEY_BASE + dataKeyModifier++;
    return dataKey
};
expand(proto, "_initCore", (function() {
    const that = this;
    const dataKey = getDataKey();
    const getProxy = function(index) {
        return that._nodes[index].proxy
    };
    that._tracker = new Tracker({
        widget: that,
        root: that._renderer.root,
        getNode: function(id) {
            const proxy = getProxy(id);
            const interactWithGroup = _parseScalar(that._getOption("interactWithGroup", true));
            return interactWithGroup && proxy.isLeaf() && proxy.getParent().isActive() ? proxy.getParent() : proxy
        },
        getData: function(e) {
            const 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()
}));