/* *
 *
 *  (c) 2010-2021 Torstein Honsi
 *
 *  License: www.highcharts.com/license
 *
 *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
 *
 * */
'use strict';
import U from '../Utilities.js';
var addEvent = U.addEvent, defined = U.defined, pick = U.pick;
/* *
 *
 *  Composition
 *
 * */
/* eslint-disable no-invalid-this, valid-jsdoc */
/**
 * Creates scrollbars if enabled.
 * @private
 */
var ScrollbarAxis = /** @class */ (function () {
    function ScrollbarAxis() {
    }
    /**
     * Attaches to axis events to create scrollbars if enabled.
     *
     * @private
     *
     * @param AxisClass
     * Axis class to extend.
     *
     * @param ScrollbarClass
     * Scrollbar class to use.
     */
    ScrollbarAxis.compose = function (AxisClass, ScrollbarClass) {
        var getExtremes = function (axis) {
            var axisMin = pick(axis.options && axis.options.min, axis.min);
            var axisMax = pick(axis.options && axis.options.max, axis.max);
            return {
                axisMin: axisMin,
                axisMax: axisMax,
                scrollMin: defined(axis.dataMin) ?
                    Math.min(axisMin, axis.min, axis.dataMin, pick(axis.threshold, Infinity)) : axisMin,
                scrollMax: defined(axis.dataMax) ?
                    Math.max(axisMax, axis.max, axis.dataMax, pick(axis.threshold, -Infinity)) : axisMax
            };
        };
        // Wrap axis initialization and create scrollbar if enabled:
        addEvent(AxisClass, 'afterInit', function () {
            var axis = this;
            if (axis.options &&
                axis.options.scrollbar &&
                axis.options.scrollbar.enabled) {
                // Predefined options:
                axis.options.scrollbar.vertical = !axis.horiz;
                axis.options.startOnTick = axis.options.endOnTick = false;
                axis.scrollbar = new ScrollbarClass(axis.chart.renderer, axis.options.scrollbar, axis.chart);
                addEvent(axis.scrollbar, 'changed', function (e) {
                    var _a = getExtremes(axis), axisMin = _a.axisMin, axisMax = _a.axisMax, unitedMin = _a.scrollMin, unitedMax = _a.scrollMax, range = unitedMax - unitedMin, to, from;
                    // #12834, scroll when show/hide series, wrong extremes
                    if (!defined(axisMin) || !defined(axisMax)) {
                        return;
                    }
                    if ((axis.horiz && !axis.reversed) ||
                        (!axis.horiz && axis.reversed)) {
                        to = unitedMin + range * this.to;
                        from = unitedMin + range * this.from;
                    }
                    else {
                        // y-values in browser are reversed, but this also
                        // applies for reversed horizontal axis:
                        to = unitedMin + range * (1 - this.from);
                        from = unitedMin + range * (1 - this.to);
                    }
                    if (this.shouldUpdateExtremes(e.DOMType)) {
                        axis.setExtremes(from, to, true, e.DOMType !== 'mousemove' && e.DOMType !== 'touchmove', e);
                    }
                    else {
                        // When live redraw is disabled, don't change extremes
                        // Only change the position of the scollbar thumb
                        this.setRange(this.from, this.to);
                    }
                });
            }
        });
        // Wrap rendering axis, and update scrollbar if one is created:
        addEvent(AxisClass, 'afterRender', function () {
            var axis = this, _a = getExtremes(axis), scrollMin = _a.scrollMin, scrollMax = _a.scrollMax, scrollbar = axis.scrollbar, offset = axis.axisTitleMargin + (axis.titleOffset || 0), scrollbarsOffsets = axis.chart.scrollbarsOffsets, axisMargin = axis.options.margin || 0, offsetsIndex, from, to;
            if (scrollbar) {
                if (axis.horiz) {
                    // Reserve space for labels/title
                    if (!axis.opposite) {
                        scrollbarsOffsets[1] += offset;
                    }
                    scrollbar.position(axis.left, axis.top + axis.height + 2 + scrollbarsOffsets[1] -
                        (axis.opposite ? axisMargin : 0), axis.width, axis.height);
                    // Next scrollbar should reserve space for margin (if set)
                    if (!axis.opposite) {
                        scrollbarsOffsets[1] += axisMargin;
                    }
                    offsetsIndex = 1;
                }
                else {
                    // Reserve space for labels/title
                    if (axis.opposite) {
                        scrollbarsOffsets[0] += offset;
                    }
                    scrollbar.position(axis.left + axis.width + 2 + scrollbarsOffsets[0] -
                        (axis.opposite ? 0 : axisMargin), axis.top, axis.width, axis.height);
                    // Next scrollbar should reserve space for margin (if set)
                    if (axis.opposite) {
                        scrollbarsOffsets[0] += axisMargin;
                    }
                    offsetsIndex = 0;
                }
                scrollbarsOffsets[offsetsIndex] += scrollbar.size +
                    scrollbar.options.margin;
                if (isNaN(scrollMin) ||
                    isNaN(scrollMax) ||
                    !defined(axis.min) ||
                    !defined(axis.max) ||
                    axis.min === axis.max // #10733
                ) {
                    // default action: when extremes are the same or there is
                    // not extremes on the axis, but scrollbar exists, make it
                    // full size
                    scrollbar.setRange(0, 1);
                }
                else {
                    from =
                        (axis.min - scrollMin) / (scrollMax - scrollMin);
                    to =
                        (axis.max - scrollMin) / (scrollMax - scrollMin);
                    if ((axis.horiz && !axis.reversed) ||
                        (!axis.horiz && axis.reversed)) {
                        scrollbar.setRange(from, to);
                    }
                    else {
                        // inverse vertical axis
                        scrollbar.setRange(1 - to, 1 - from);
                    }
                }
            }
        });
        // Make space for a scrollbar:
        addEvent(AxisClass, 'afterGetOffset', function () {
            var axis = this, index = axis.horiz ? 2 : 1, scrollbar = axis.scrollbar;
            if (scrollbar) {
                axis.chart.scrollbarsOffsets = [0, 0]; // reset scrollbars offsets
                axis.chart.axisOffset[index] +=
                    scrollbar.size + scrollbar.options.margin;
            }
        });
        return AxisClass;
    };
    return ScrollbarAxis;
}());
export default ScrollbarAxis;
