/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";

const { assert } = require("devtools/shared/DevToolsUtils");
const { actions } = require("../constants");
const { refresh } = require("./refresh");

/**
 * Change the display we use for labeling individual nodes and refresh the
 * current data.
 */
exports.setLabelDisplayAndRefresh = function (heapWorker, display) {
  return function* (dispatch, getState) {
    // Clears out all stored census data and sets the display.
    dispatch(setLabelDisplay(display));
    yield dispatch(refresh(heapWorker));
  };
};

/**
 * Change the display we use for labeling individual nodes.
 *
 * @param {labelDisplayModel} display
 */
const setLabelDisplay = exports.setLabelDisplay = function (display) {
  assert(typeof display === "object"
         && display
         && display.breakdown
         && display.breakdown.by,
    `Breakdowns must be an object with a \`by\` property, attempted to set: ${uneval(display)}`);

  return {
    type: actions.SET_LABEL_DISPLAY,
    display,
  };
};