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/*
 *  bootstrap4-input-clearer v1.2.0
 *  Add clear icons to Bootstrap 4 input fields.
 *  https://github.com/mheigl/bootstrap4-input-clearer
 *
 *  Made by Michael Heigl
 *  Under GNU General Public License v3.0
 */
 ;
(function($) {
    "use strict";

    var pluginName = "clearer",
        defaults = {
            clearHtml: '<i class="material-icons">close</i>',
            cssClass: '',
            focusable: true
        };

    function Plugin(element, options) {
        this.element = element;
        this.settings = $.extend({}, defaults, options);
        this.init();
    }

    $.extend(Plugin.prototype, {
        init: function() {
            var self = this;

            this.$element = $(this.element);
            this.$clearer = $('<div class="input-group-append ' + this.settings.cssClass + '">' + '<button class="btn input-group-text form-control" type="button">' + this.settings.clearHtml + '</button></div>');

            if (this.settings.focusable === false) {
                this.$clearer.attr({
                    'tabindex': -1
                });
            }

            if (this.$element.closest('.input-group').length === 0) {
                this.$element.wrap("<div class='input-group'></div>");
            }

            this.$element.after(this.$clearer);

            this.update();

            this.$clearer.on('click.clearer', function(e) {
                self.$element.val('');
                self.$element.trigger('change');
                self.$element.focus();
                self.update();
                e.preventDefault();
            });

            this.$element.on('focus.clearer blur.clearer', function() {
                self.update();
            });

            this.$element.on('keyup.clearer', function(e) {
                if (e.keyCode === 27) {
                    $(this).val('').focus();
                }

                self.update();
            });

            this.$element.on('input.clearer change.clearer paste.clearer', function() {
                self.update();
            });
        },
        update: function() {
            if (this.$element.val().length >= 1) {
                this.$clearer.show();
            } else {
                this.$clearer.hide();
            }
        }
    });

    $.fn[pluginName] = function(options) {
        return this.each(function() {
            if (!$.data(this, "plugin_" + pluginName)) {
                $.data(this, "plugin_" +
                    pluginName, new Plugin(this, options));
            }
        });
    };
})(jQuery, window, document);