* jQuery Spliter Plugin version 0.28.3

 * Copyright (C) 2010-2019 Jakub T. Jankiewicz <https://jcubic.pl/me>

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

/* global module, define, global, require, setTimeout */

// UMD taken from https://github.com/umdjs/umd

(function(factory, undefined) {

    var root = typeof window !== 'undefined' ? window : global;

    if (typeof define === 'function' && define.amd) {

        // AMD. Register as an anonymous module.

        // istanbul ignore next

        define(['jquery'], factory);

    } else if (typeof module === 'object' && module.exports) {

        // Node/CommonJS

        module.exports = function(root, jQuery) {

            if (jQuery === undefined) {

                // require('jQuery') returns a factory that requires window to

                // build a jQuery instance, we normalize how we use modules

                // that require this pattern but the window provided is a noop

                // if it's defined (how jquery works)

                if (window !== undefined) {

                    jQuery = require('jquery');

                } else {

                    jQuery = require('jquery')(root);

                }

            }

            factory(jQuery);

            return jQuery;

        };

    } else {

        // Browser

        // istanbul ignore next

        factory(root.jQuery);

    }

})(function($, undefined) {

    var count = 0;

    var splitter_id = null;

    var splitters = [];

    var current_splitter = null;

    var current_splitter_index = null;

    $.fn.split = function(options) {

        var data = this.data('splitter');

        if (data) {

            return data;

        }

        var panels = [];

        var $splitters = [];

        var panel_1;

        var panel_2;

        var settings = $.extend({

            limit: 100,

            orientation: 'horizontal',

            position: '50%',

            invisible: false,

            onDragStart: $.noop,

            onDragEnd: $.noop,

            onDrag: $.noop,

            percent: false

        }, options || {});

        this.settings = settings;

        var cls;

        var children = this.children();

        if (children.length === 2) {

            if (settings.orientation == 'vertical') {

                panel_1 = children.first().addClass('left_panel');

                panel_2 = panel_1.next().addClass('right_panel');

                cls = 'vsplitter';

            } else if (settings.orientation == 'horizontal') {

                panel_1 = children.first().addClass('top_panel');

                panel_2 = panel_1.next().addClass('bottom_panel');

                cls = 'hsplitter';

            }

            panels = [panel_1, panel_2];

        } else {

            children.each(function() {

                var panel = $(this);

                if (settings.orientation == 'vertical') {

                    panel.addClass('vertical_panel');

                    cls = 'vsplitter';

                } else {

                    panel.addClass('horizontal_panel');

                    cls = 'hsplitter';

                }

                panels.push(panel);

            });

        }

        if (settings.invisible) {

            cls += ' splitter-invisible';

        }

        var width = this.width();

        var height = this.height();

        this.addClass('splitter_panel');

        var id = count++;

        panels.slice(0, -1).forEach(function(panel, i) {

            var splitter = $('<div/>').addClass(cls).on('mouseenter touchstart', function() {

                splitter_id = id;

                current_splitter_index = splitter.index() - i - 1;

            }).on('mouseleave touchend', function() {

                splitter_id = null;

                current_splitter_index = null;

            }).insertAfter(panel);

            $splitters.push(splitter);

        });

        var position;

        function get_position(position) {

            if (position instanceof Array) {

                return position.map(get_position);

            }

            if (typeof position === 'number') {

                return position;

            }

            if (typeof position === 'string') {

                var match = position.match(/^([0-9\.]+)(px|%)$/);

                if (match) {

                    if (match[2] == 'px') {

                        return +match[1];

                    } else {

                        if (settings.orientation == 'vertical') {

                            return (width * +match[1]) / 100;

                        } else if (settings.orientation == 'horizontal') {

                            return (height * +match[1]) / 100;

                        }

                    }

                } else {

                    //throw position + ' is invalid value';

                }

            } else {

                //throw 'position have invalid type';

            }

        }

        function set_limit(limit) {

            if(!isNaN(parseFloat(limit)) && isFinite(limit)){

                return {

                    leftUpper: limit,

                    rightBottom: limit

                };

            }

            return limit;

        }

        var self = $.extend(this, {

            refresh: function() {

                var new_width = this.width();

                var new_height = this.height();

                if (width != new_width || height != new_height) {

                    width = this.width();

                    height = this.height();

                    self.position(position);

                }

            },

            option: function(name, value) {

                if (name === 'position') {

                    return self.position(value);

                } else if (typeof value === 'undefined') {

                    return settings[name];

                } else {

                    settings[name] = value;

                }

                return self;

            },

            position: (function() {

                function make_sizer(dim_name, pos_name) {

                    return function(n, silent) {

                        if (n === undefined) {

                            return position;

                        } else {

                            position = get_position(n);

                            if (!(position instanceof Array)) {

                                position = [position];

                            }

                            if (position.length !== panels.length - 1) {

                                throw new Error('position array need to equal splitters length');

                            }

                            var outer_name = 'outer';

                            outer_name += dim_name[0].toUpperCase() + dim_name.substring(1);

                            var dim_px = self.css('visiblity', 'hidden')[dim_name]();

                            var pw = 0;

                            var sw_sum = 0;

                            for (var i = 0; i < position.length; ++i) {

                                var splitter = $splitters[i];

                                var panel = panels[i];

                                var pos = position[i];

                                var splitter_dim = splitter[dim_name]();

                                var sw2 = splitter_dim/2;

                                if (settings.invisible) {

                                    pw += panel[dim_name](pos)[outer_name]();

                                    splitter.css(pos_name, pw - (sw2 * (i + 1)));

                                } else if (settings.percent) {

                                    var w1 = (pos - sw2) / dim_px * 100;

                                    var l1 = (pw + sw_sum) / dim_px * 100;

                                    panel.css(pos_name, l1 + '%');

                                    pw += panel.css(dim_name, w1 + '%')[outer_name]();

                                    splitter.css(pos_name, (pw + sw_sum) / dim_px * 100 + '%');

                                } else {

                                    panel.css(pos_name, pw + sw_sum);

                                    pw += panel.css(dim_name, pos - sw2)[outer_name]();

                                    splitter.css(pos_name, pw + sw_sum);

                                }

                                sw_sum += splitter_dim;

                            }

                            var panel_last = panels[i];

                            if (settings.invisible) {

                                panel_last.height(height - pw);

                            } else {

                                var s_sum = splitter_dim * i;

                                var props = {};

                                if (settings.percent) {

                                    props[dim_name] = (dim_px - pw - sw_sum) / dim_px * 100 + '%';

                                    props[pos_name] = (pw + sw_sum) / dim_px * 100 + '%';

                                } else {

                                    props[dim_name] = dim_px - pw - sw_sum;

                                    props[pos_name] = pw + sw_sum;

                                }

                                panel_last.css(props);

                            }

                            self.css('visiblity', '');

                        }

                        if (!silent) {

                            self.trigger('splitter.resize');

                            self.find('.splitter_panel').trigger('splitter.resize');

                        }

                        return self;

                    };

                }

                if (settings.orientation == 'vertical') {

                    return make_sizer('width', 'left');

                } else if (settings.orientation == 'horizontal') {

                    return make_sizer('height', 'top');

                } else {

                    return $.noop;

                }

            })(),

            _splitters: $splitters,

            _panels: panels,

            orientation: settings.orientation,

            limit: set_limit(settings.limit),

            isActive: function() {

                return splitter_id === id;

            },

            destroy: function() {

                self.removeClass('splitter_panel');

                if (settings.orientation == 'vertical') {

                    panel_1.removeClass('left_panel');

                    panel_2.removeClass('right_panel');

                } else if (settings.orientation == 'horizontal') {

                    panel_1.removeClass('top_panel');

                    panel_2.removeClass('bottom_panel');

                }

                self.off('splitter.resize');

                self.trigger('splitter.resize');

                self.find('.splitter_panel').trigger('splitter.resize');

                splitters[id] = null;

                count--;

                $splitters.each(function() {

                    var splitter = $(this);

                    splitter.off('mouseenter');

                    splitter.off('mouseleave');

                    splitter.off('touchstart');

                    splitter.off('touchmove');

                    splitter.off('touchend');

                    splitter.off('touchleave');

                    splitter.off('touchcancel');

                    splitter.remove();

                });

                self.removeData('splitter');

                var not_null = false;

                for (var i=splitters.length; i--;) {

                    if (splitters[i] !== null) {

                        not_null = true;

                        break;

                    }

                }

                //remove document events when no splitters

                if (!not_null) {

                    $(document.documentElement).off('.splitter');

                    $(window).off('resize.splitter');

                    splitters = [];

                    count = 0;

                }

            }

        });

        self.on('splitter.resize', function(e) {

            var pos = self.position();

            if (self.orientation == 'vertical' &&

                pos > self.width()) {

                pos = self.width() - self.limit.rightBottom-1;

            } else if (self.orientation == 'horizontal' &&

                       pos > self.height()) {

                pos = self.height() - self.limit.rightBottom-1;

            }

            if (pos < self.limit.leftUpper) {

                pos = self.limit.leftUpper + 1;

            }

            e.stopPropagation();

            self.position(pos, true);

        });

        //inital position of splitter

        var pos;

        if (settings.orientation == 'vertical') {

            if (pos > width-settings.limit.rightBottom) {

                pos = width-settings.limit.rightBottom;

            } else {

                pos = get_position(settings.position);

            }

        } else if (settings.orientation == 'horizontal') {

            //position = height/2;

            if (pos > height-settings.limit.rightBottom) {

                pos = height-settings.limit.rightBottom;

            } else {

                pos = get_position(settings.position);