medical/node_modules/echarts/lib/chart/treemap/treemapAction.js

var echarts = require("../../echarts");

var helper = require("./helper");

/**
 * @file Treemap action
 */
var noop = function () {};

var actionTypes = ['treemapZoomToNode', 'treemapRender', 'treemapMove'];

for (var i = 0; i < actionTypes.length; i++) {
  echarts.registerAction({
    type: actionTypes[i],
    update: 'updateView'
  }, noop);
}

echarts.registerAction({
  type: 'treemapRootToNode',
  update: 'updateView'
}, function (payload, ecModel) {
  ecModel.eachComponent({
    mainType: 'series',
    subType: 'treemap',
    query: payload
  }, handleRootToNode);

  function handleRootToNode(model, index) {
    var targetInfo = helper.retrieveTargetInfo(payload, model);

    if (targetInfo) {
      var originViewRoot = model.getViewRoot();

      if (originViewRoot) {
        payload.direction = helper.aboveViewRoot(originViewRoot, targetInfo.node) ? 'rollUp' : 'drillDown';
      }

      model.resetViewRoot(targetInfo.node);
    }
  }
});