/*!

* jQuery UI Selectable 1.11.4
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/selectable/
*/

(function( factory ) {

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

        // AMD. Register as an anonymous module.
        define([
                "jquery",
                "./core",
                "./mouse",
                "./widget"
        ], factory );
} else {

        // Browser globals
        factory( jQuery );
}

}(function( $ ) {

return $.widget(“ui.selectable”, $.ui.mouse, {

version: "1.11.4",
options: {
        appendTo: "body",
        autoRefresh: true,
        distance: 0,
        filter: "*",
        tolerance: "touch",

        // callbacks
        selected: null,
        selecting: null,
        start: null,
        stop: null,
        unselected: null,
        unselecting: null
},
_create: function() {
        var selectees,
                that = this;

        this.element.addClass("ui-selectable");

        this.dragged = false;

        // cache selectee children based on filter
        this.refresh = function() {
                selectees = $(that.options.filter, that.element[0]);
                selectees.addClass("ui-selectee");
                selectees.each(function() {
                        var $this = $(this),
                                pos = $this.offset();
                        $.data(this, "selectable-item", {
                                element: this,
                                $element: $this,
                                left: pos.left,
                                top: pos.top,
                                right: pos.left + $this.outerWidth(),
                                bottom: pos.top + $this.outerHeight(),
                                startselected: false,
                                selected: $this.hasClass("ui-selected"),
                                selecting: $this.hasClass("ui-selecting"),
                                unselecting: $this.hasClass("ui-unselecting")
                        });
                });
        };
        this.refresh();

        this.selectees = selectees.addClass("ui-selectee");

        this._mouseInit();

        this.helper = $("<div class='ui-selectable-helper'></div>");
},

_destroy: function() {
        this.selectees
                .removeClass("ui-selectee")
                .removeData("selectable-item");
        this.element
                .removeClass("ui-selectable ui-selectable-disabled");
        this._mouseDestroy();
},

_mouseStart: function(event) {
        var that = this,
                options = this.options;

        this.opos = [ event.pageX, event.pageY ];

        if (this.options.disabled) {
                return;
        }

        this.selectees = $(options.filter, this.element[0]);

        this._trigger("start", event);

        $(options.appendTo).append(this.helper);
        // position helper (lasso)
        this.helper.css({
                "left": event.pageX,
                "top": event.pageY,
                "width": 0,
                "height": 0
        });

        if (options.autoRefresh) {
                this.refresh();
        }

        this.selectees.filter(".ui-selected").each(function() {
                var selectee = $.data(this, "selectable-item");
                selectee.startselected = true;
                if (!event.metaKey && !event.ctrlKey) {
                        selectee.$element.removeClass("ui-selected");
                        selectee.selected = false;
                        selectee.$element.addClass("ui-unselecting");
                        selectee.unselecting = true;
                        // selectable UNSELECTING callback
                        that._trigger("unselecting", event, {
                                unselecting: selectee.element
                        });
                }
        });

        $(event.target).parents().addBack().each(function() {
                var doSelect,
                        selectee = $.data(this, "selectable-item");
                if (selectee) {
                        doSelect = (!event.metaKey && !event.ctrlKey) || !selectee.$element.hasClass("ui-selected");
                        selectee.$element
                                .removeClass(doSelect ? "ui-unselecting" : "ui-selected")
                                .addClass(doSelect ? "ui-selecting" : "ui-unselecting");
                        selectee.unselecting = !doSelect;
                        selectee.selecting = doSelect;
                        selectee.selected = doSelect;
                        // selectable (UN)SELECTING callback
                        if (doSelect) {
                                that._trigger("selecting", event, {
                                        selecting: selectee.element
                                });
                        } else {
                                that._trigger("unselecting", event, {
                                        unselecting: selectee.element
                                });
                        }
                        return false;
                }
        });

},

_mouseDrag: function(event) {

        this.dragged = true;

        if (this.options.disabled) {
                return;
        }

        var tmp,
                that = this,
                options = this.options,
                x1 = this.opos[0],
                y1 = this.opos[1],
                x2 = event.pageX,
                y2 = event.pageY;

        if (x1 > x2) { tmp = x2; x2 = x1; x1 = tmp; }
        if (y1 > y2) { tmp = y2; y2 = y1; y1 = tmp; }
        this.helper.css({ left: x1, top: y1, width: x2 - x1, height: y2 - y1 });

        this.selectees.each(function() {
                var selectee = $.data(this, "selectable-item"),
                        hit = false;

                //prevent helper from being selected if appendTo: selectable
                if (!selectee || selectee.element === that.element[0]) {
                        return;
                }

                if (options.tolerance === "touch") {
                        hit = ( !(selectee.left > x2 || selectee.right < x1 || selectee.top > y2 || selectee.bottom < y1) );
                } else if (options.tolerance === "fit") {
                        hit = (selectee.left > x1 && selectee.right < x2 && selectee.top > y1 && selectee.bottom < y2);
                }

                if (hit) {
                        // SELECT
                        if (selectee.selected) {
                                selectee.$element.removeClass("ui-selected");
                                selectee.selected = false;
                        }
                        if (selectee.unselecting) {
                                selectee.$element.removeClass("ui-unselecting");
                                selectee.unselecting = false;
                        }
                        if (!selectee.selecting) {
                                selectee.$element.addClass("ui-selecting");
                                selectee.selecting = true;
                                // selectable SELECTING callback
                                that._trigger("selecting", event, {
                                        selecting: selectee.element
                                });
                        }
                } else {
                        // UNSELECT
                        if (selectee.selecting) {
                                if ((event.metaKey || event.ctrlKey) && selectee.startselected) {
                                        selectee.$element.removeClass("ui-selecting");
                                        selectee.selecting = false;
                                        selectee.$element.addClass("ui-selected");
                                        selectee.selected = true;
                                } else {
                                        selectee.$element.removeClass("ui-selecting");
                                        selectee.selecting = false;
                                        if (selectee.startselected) {
                                                selectee.$element.addClass("ui-unselecting");
                                                selectee.unselecting = true;
                                        }
                                        // selectable UNSELECTING callback
                                        that._trigger("unselecting", event, {
                                                unselecting: selectee.element
                                        });
                                }
                        }
                        if (selectee.selected) {
                                if (!event.metaKey && !event.ctrlKey && !selectee.startselected) {
                                        selectee.$element.removeClass("ui-selected");
                                        selectee.selected = false;

                                        selectee.$element.addClass("ui-unselecting");
                                        selectee.unselecting = true;
                                        // selectable UNSELECTING callback
                                        that._trigger("unselecting", event, {
                                                unselecting: selectee.element
                                        });
                                }
                        }
                }
        });

        return false;
},

_mouseStop: function(event) {
        var that = this;

        this.dragged = false;

        $(".ui-unselecting", this.element[0]).each(function() {
                var selectee = $.data(this, "selectable-item");
                selectee.$element.removeClass("ui-unselecting");
                selectee.unselecting = false;
                selectee.startselected = false;
                that._trigger("unselected", event, {
                        unselected: selectee.element
                });
        });
        $(".ui-selecting", this.element[0]).each(function() {
                var selectee = $.data(this, "selectable-item");
                selectee.$element.removeClass("ui-selecting").addClass("ui-selected");
                selectee.selecting = false;
                selectee.selected = true;
                selectee.startselected = true;
                that._trigger("selected", event, {
                        selected: selectee.element
                });
        });
        this._trigger("stop", event);

        this.helper.remove();

        return false;
}

});

}));