/**
 * Common functions/utils used in all page
 */
if (typeof window.LP == 'undefined') {
	window.LP = window.LearnPress = {};
}


(function ($) {
    /**
     * Manage event callbacks.
     * Allow add/remove a callback function into custom event of an object.
     *
     * @constructor
     */
    window.LP.Event_Callback = function (self) {
        var callbacks = {};

        this.on = function (event, callback) {
            var namespaces = event.split('.'),
                namespace = '';

            if (namespaces.length > 1) {
                event = namespaces[0];
                namespace = namespaces[1];
            }

            if (!callbacks[event]) {
                callbacks[event] = [[], {}];
            }

            if (namespace) {
                if (!callbacks[event][1][namespace]) {
                    callbacks[event][1][namespace] = [];
                }
                callbacks[event][1][namespace].push(callback);
            } else {
                callbacks[event][0].push(callback);
            }

            return self;
        };

        this.off = function (event, callback) {
            var namespaces = event.split('.'),
                namespace = '';

            if (namespaces.length > 1) {
                event = namespaces[0];
                namespace = namespaces[1];
            }

            if (!callbacks[event]) {
                return self;
            }
            var at = -1;
            if (!namespace) {
                if ($.isFunction(callback)) {
                    at = callbacks[event][0].indexOf(callback);
                    if (at < 0) {
                        return self;
                    }
                    callbacks[event][0].splice(at, 1);
                } else {
                    callbacks[event][0] = [];
                }
            } else {
                if (!callbacks[event][1][namespace]) {
                    return self;
                }

                if ($.isFunction(callback)) {
                    at = callbacks[event][1][namespace].indexOf(callback);
                    if (at < 0) {
                        return self;
                    }
                    callbacks[event][1][namespace].splice(at, 1);
                } else {
                    callbacks[event][1][namespace] = [];
                }
            }

            return self;
        };

        this.callEvent = function (event, callbackArgs) {
            if (!callbacks[event]) {
                return;
            }

            if (callbacks[event][0]) {
                for (var i = 0; i < callbacks[event][0].length; i++) {
                    $.isFunction(callbacks[event][0][i]) && callbacks[event][i][0].apply(self, callbackArgs);
                }
            }

            if (callbacks[event][1]) {
                for (var i in callbacks[event][1]) {
                    for (var j = 0; j < callbacks[event][1][i].length; j++) {
                        $.isFunction(callbacks[event][1][i][j]) && callbacks[event][1][i][j].apply(self, callbackArgs);
                    }
                }
            }
        }
    };
    $.fn.serializeJSON = function (path) {
        var isInput = $(this).is('input') || $(this).is('select') || $(this).is('textarea');
        var unIndexed = isInput ? $(this).serializeArray() : $(this).find('input, select, textarea').serializeArray(),
            indexed = {},
            validate = /(\[([a-zA-Z0-9_-]+)?\]?)/g,
            arrayKeys = {},
            end = false;
        $.each(unIndexed, function () {
            var that = this,
                match = this.name.match(/^([0-9a-zA-Z_-]+)/);
            if (!match) {
                return;
            }
            var keys = this.name.match(validate),
                objPath = "indexed['" + match[0] + "']";

			if (keys) {
				if (typeof indexed[match[0]] != 'object') {
					indexed[match[0]] = {};
				}

				$.each(keys, function (i, prop) {
					prop = prop.replace(/\]|\[/g, '');
					var rawPath = objPath.replace(/'|\[|\]/g, ''),
						objExp = '',
						preObjPath = objPath;

					if (prop == '') {
						if (arrayKeys[rawPath] == undefined) {
							arrayKeys[rawPath] = 0;
						} else {
							arrayKeys[rawPath]++;
						}
						objPath += "['" + arrayKeys[rawPath] + "']";
					} else {
						if (!isNaN(prop)) {
							arrayKeys[rawPath] = prop;
						}
						objPath += "['" + prop + "']";
					}
					try {
						if (i == keys.length - 1) {
							objExp = objPath + "=that.value;";
							end = true;
						} else {
							objExp = objPath + "={}";
							end = false;
						}

                        var evalString = "" +
                            "if( typeof " + objPath + " == 'undefined'){" + objExp + ";" +
                            "}else{" +
                            "if(end){" +
                            "if(typeof " + preObjPath + "!='object'){" + preObjPath + "={};}" +
                            objExp +
                            "}" +
                            "}";
                        eval(evalString);
                    } catch (e) {
                        console.log('Error:' + e + "\n" + objExp);
                    }
                })
            } else {
                indexed[match[0]] = this.value;
            }
        });
        if (path) {
            path = "['" + path.replace('.', "']['") + "']";
            var c = 'try{indexed = indexed' + path + '}catch(ex){console.log(c, ex);}';
            eval(c);
        }
        return indexed;
    };
    $.fn.LP_Tooltip = function (options) {
        options = $.extend({}, {
            offset: [0, 0]
        }, options || {});
        return $.each(this, function () {
            var $el = $(this),
                content = $el.data('content');
            if (!content || ($el.data('LP_Tooltip') !== undefined)) {
                return;
            }

            console.log(content);
            var $tooltip = null;
            $el.hover(function (e) {
                $tooltip = $('<div class="learn-press-tooltip-bubble"/>').html(content).appendTo($('body')).hide();
                var position = $el.offset();
                if ($.isArray(options.offset)) {
                    var top = options.offset[1],
                        left = options.offset[0];
                    if ($.isNumeric(left)) {
                        position.left += left;
                    } else {

					}
					if ($.isNumeric(top)) {
						position.top += top;
					} else {

					}
				}
				$tooltip.css({
					top : position.top,
					left: position.left
				});
				$tooltip.fadeIn();
			}, function () {
				$tooltip && $tooltip.remove();
			});
			$el.data('tooltip', true);
		});
	};
	$.fn.hasEvent = function (name) {
		var events = $(this).data('events');
		if (typeof events.LP == 'undefined') {
			return false;
		}
		for (i = 0; i < events.LP.length; i++) {
			if (events.LP[i].namespace == name) {
				return true;
			}
		}
		return false;
	};
	$.fn.dataToJSON = function () {
		var json = {};
		$.each(this[0].attributes, function () {
			var m = this.name.match(/^data-(.*)/);
			if (m) {
				json[m[1]] = this.value;
			}
		});
		return json;
	};

	String.prototype.getQueryVar = function (name) {
		name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
		var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
			results = regex.exec(this);
		return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
	};
	String.prototype.addQueryVar = function (name, value) {
		var url = this,
			m = url.split('#');
		url = m[0];
		if (name.match(/\[/)) {
			url += url.match(/\?/) ? '&' : '?';
			url += name + '=' + value;
		} else {
			if ((url.indexOf('&' + name + '=') != -1) || (url.indexOf('?' + name + '=') != -1)) {
				url = url.replace(new RegExp(name + "=([^&#]*)", 'g'), name + '=' + value);
			} else {
				url += url.match(/\?/) ? '&' : '?';
				url += name + '=' + value;
			}
		}
		return url + (m[1] ? '#' + m[1] : '');
	};
	String.prototype.removeQueryVar = function (name) {
		var url = this;
		var m = url.split('#');
		url = m[0];
		name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
		var regex = new RegExp("[\\?&]" + name + "([\[][^=]*)?=([^&#]*)", 'g');
		url = url.replace(regex, '');
		return url + (m[1] ? '#' + m[1] : '');
	};

	if ($.isEmptyObject("") == false) {
		$.isEmptyObject = function (a) {
			for (prop in a) {
				if (a.hasOwnProperty(prop)) {
					return false;
				}
			}
			return true;
		};
	}

	LP.MessageBox = {
		/*
		 *
		 */
		$block         : null,
		$window        : null,
		events         : {},
		instances      : [],
		instance       : null,
		quickConfirm   : function (elem, args) {
			var $e = $(elem);
			$('[learn-press-quick-confirm]').each(function () {
				( $ins = $(this).data('quick-confirm') ) && ( console.log($ins), $ins.destroy() );
			});
			!$e.attr('learn-press-quick-confirm') && $e.attr('learn-press-quick-confirm', 'true').data('quick-confirm',
				new (function (elem, args) {
					var $elem = $(elem),
						$div = $('<span class="learn-press-quick-confirm"></span>').insertAfter($elem), //($(document.body)),
						offset = $(elem).position() || {left: 0, top: 0},
						timerOut = null,
						timerHide = null,
						n = 3,
						hide = function () {
							$div.fadeOut('fast', function () {
								$(this).remove();
								$div.parent().css('position', '');
							});
							$elem.removeAttr('learn-press-quick-confirm').data('quick-confirm', undefined);
							stop();
						},
						stop = function () {
							timerHide && clearInterval(timerHide);
							timerOut && clearInterval(timerOut);
						},
						start = function () {
							timerOut = setInterval(function () {
								if (--n == 0) {
									hide.call($div[0]);
									$.isFunction(args.onCancel) && args.onCancel(args.data);
									stop();
								}
								$div.find('span').html(' (' + n + ')');
							}, 1000);

							timerHide = setInterval(function () {
								if (!$elem.is(':visible') || $elem.css("visibility") == 'hidden') {
									stop();
									$div.remove();
									$div.parent().css('position', '');
									$.isFunction(args.onCancel) && args.onCancel(args.data);
								}
							}, 350);
						};
					args = $.extend({
						message : '',
						data    : null,
						onOk    : null,
						onCancel: null,
						offset  : {top: 0, left: 0}
					}, args || {});
					$div.html(args.message || $elem.attr('data-confirm-remove') || 'Are you sure?').append('<span> (' + n + ')</span>').css({});
					$div.click(function () {
						$.isFunction(args.onOk) && args.onOk(args.data);
						hide();
					}).hover(function () {
						stop();
					}, function () {
						start();
					});
					//$div.parent().css('position', 'relative');
					$div.css({
						left: ( ( offset.left + $elem.outerWidth() ) - $div.outerWidth() ) + args.offset.left,
						top : offset.top + $elem.outerHeight() + args.offset.top + 5
					}).hide().fadeIn('fast');
					start();

                    this.destroy = function () {
                        $div.remove();
                        $elem.removeAttr('learn-press-quick-confirm').data('quick-confirm', undefined);
                        stop();

                    };
                })(elem, args)
            );
        },
        show: function (message, args) {
            //this.hide();
            $.proxy(function () {
                args = $.extend({
                    title: '',
                    buttons: '',
                    events: false,
                    autohide: false,
                    message: message,
                    data: false,
                    id: LP.uniqueId(),
                    onHide: null
                }, args || {});

                this.instances.push(args);
                this.instance = args;

                var $doc = $(document),
                    $body = $(document.body);
                if (!this.$block) {
                    this.$block = $('<div id="learn-press-message-box-block"></div>').appendTo($body);

                }
                if (!this.$window) {
                    this.$window = $('<div id="learn-press-message-box-window"><div id="message-box-wrap"></div> </div>').insertAfter(this.$block);
                    this.$window.click(function () {
                    });
                }
                //this.events = args.events || {};
                this._createWindow(message, args.title, args.buttons);
                this.$block.show();
                this.$window.show().attr('instance', args.id);
                $(window)
                    .bind('resize.message-box', $.proxy(this.update, this))
                    .bind('scroll.message-box', $.proxy(this.update, this));
                this.update(true);
                if (args.autohide) {
                    setTimeout(function () {
                        LP.MessageBox.hide();
                        $.isFunction(args.onHide) && args.onHide.call(LP.MessageBox, args);
                    }, args.autohide);
                }
            }, this)();
        },
        blockUI: function (message) {

            message = (message !== false ? (message ? message : 'Wait a moment') : '') + '<div class="message-box-animation"></div>';
            this.show(message);
        },
        hide: function (delay, instance) {
            if (instance) {
                this._removeInstance(instance.id);
            } else if (this.instance) {
                this._removeInstance(this.instance.id);
            }
            if (this.instances.length === 0) {
                if (this.$block) {
                    this.$block.hide();
                }
                if (this.$window) {
                    this.$window.hide();
                }
                $(window)
                    .unbind('resize.message-box', this.update)
                    .unbind('scroll.message-box', this.update);
            } else {
                if (this.instance) {
                    this._createWindow(this.instance.message, this.instance.title, this.instance.buttons);
                }
            }

        },
        update: function (force) {
            var that = this,
                $wrap = this.$window.find('#message-box-wrap'),
                timer = $wrap.data('timer'),
                _update = function () {
                    LP.Hook.doAction('learn_press_message_box_before_resize', that);
                    var $content = $wrap.find('.message-box-content').css("height", "").css('overflow', 'hidden'),
                        width = $wrap.outerWidth(),
                        height = $wrap.outerHeight(),
                        contentHeight = $content.height(),
                        windowHeight = $(window).height(),
                        top = $wrap.offset().top;
                    if (contentHeight > windowHeight - 50) {
                        $content.css({
                            height: windowHeight - 25
                        });
                        height = $wrap.outerHeight();
                    } else {
                        $content.css("height", "").css('overflow', '');
                    }
                    $wrap.css({
                        marginTop: ($(window).height() - height) / 2
                    });
                    LP.Hook.doAction('learn_press_message_box_resize', height, that);
                };
            if (force) _update();
            timer && clearTimeout(timer);
            timer = setTimeout(_update, 250);
        },
        _removeInstance: function (id) {
            for (var i = 0; i < this.instances.length; i++) {
                if (this.instances[i].id === id) {

                    this.instances.splice(i, 1);

                    var len = this.instances.length;
                    if (len) {
                        this.instance = this.instances[len - 1];
                        this.$window.attr('instance', this.instance.id);
                    } else {
                        this.instance = false;
                        this.$window.removeAttr('instance');
                    }
                    break;
                }
            }
        },
        _getInstance: function (id) {
            for (var i = 0; i < this.instances.length; i++) {
                if (this.instances[i].id === id) {
                    return this.instances[i];
                }
            }
        },
        _createWindow: function (message, title, buttons) {
            var $wrap = this.$window.find('#message-box-wrap').html('');
            if (title) {
                $wrap.append('<h3 class="message-box-title">' + title + '</h3>');
            }
            $wrap.append($('<div class="message-box-content"></div>').html(message));
            if (buttons) {
                var $buttons = $('<div class="message-box-buttons"></div>');
                switch (buttons) {
                    case 'yesNo':
                        $buttons.append(this._createButton(LP_Settings.localize.button_yes, 'yes'));
                        $buttons.append(this._createButton(LP_Settings.localize.button_no, 'no'));
                        break;
                    case 'okCancel':
                        $buttons.append(this._createButton(LP_Settings.localize.button_ok, 'ok'));
                        $buttons.append(this._createButton(LP_Settings.localize.button_cancel, 'cancel'));
                        break;
                    default:
                        $buttons.append(this._createButton(LP_Settings.localize.button_ok, 'ok'));
                }
                $wrap.append($buttons);
            }
        },
        _createButton: function (title, type) {
            var $button = $('<button type="button" class="button message-box-button message-box-button-' + type + '">' + title + '</button>'),
                callback = 'on' + (type.substr(0, 1).toUpperCase() + type.substr(1));
            $button.data('callback', callback).click(function () {
                var instance = $(this).data('instance'),
                    callback = instance.events[$(this).data('callback')];
                if ($.type(callback) === 'function') {
                    if (callback.apply(LP.MessageBox, [instance]) === false) {
                        // return;
                    } else {
                        LP.MessageBox.hide(null, instance);
                    }
                } else {
                    LP.MessageBox.hide(null, instance);
                }
            }).data('instance', this.instance);
            return $button;
        }
    };
    LP.Hook = {
        hooks: {action: {}, filter: {}},
        addAction: function (action, callable, priority, tag) {
            this.addHook('action', action, callable, priority, tag);
            return this;
        },
        addFilter: function (action, callable, priority, tag) {
            this.addHook('filter', action, callable, priority, tag);
            return this;
        },
        doAction: function (action) {
            this.doHook('action', action, arguments);
            return this;
        },
        applyFilters: function (action) {
            return this.doHook('filter', action, arguments);
        },
        removeAction: function (action, tag) {
            this.removeHook('action', action, tag);
            return this;
        },
        removeFilter: function (action, priority, tag) {
            this.removeHook('filter', action, priority, tag);
            return this;
        },
        addHook: function (hookType, action, callable, priority, tag) {
            if (undefined === this.hooks[hookType][action]) {
                this.hooks[hookType][action] = [];
            }
            var hooks = this.hooks[hookType][action];
            if (undefined === tag) {
                tag = action + '_' + hooks.length;
            }
            this.hooks[hookType][action].push({tag: tag, callable: callable, priority: priority});
            return this;
        },
        doHook: function (hookType, action, args) {

            // splice args from object into array and remove first index which is the hook name
            args = Array.prototype.slice.call(args, 1);

            if (undefined !== this.hooks[hookType][action]) {
                var hooks = this.hooks[hookType][action], hook;
                //sort by priority
                hooks.sort(function (a, b) {
                    return a["priority"] - b["priority"];
                });
                for (var i = 0; i < hooks.length; i++) {
                    hook = hooks[i].callable;
                    if (typeof hook !== 'function')
                        hook = window[hook];
                    if ('action' === hookType) {
                        hook.apply(null, args);
                    } else {
                        args[0] = hook.apply(null, args);
                    }
                }
            }
            if ('filter' === hookType) {
                return args[0];
            }
            return this;
        },
        removeHook: function (hookType, action, priority, tag) {
            if (undefined !== this.hooks[hookType][action]) {
                var hooks = this.hooks[hookType][action];
                for (var i = hooks.length - 1; i >= 0; i--) {
                    if ((undefined === tag || tag === hooks[i].tag) && (undefined === priority || priority === hooks[i].priority)) {
                        hooks.splice(i, 1);
                    }
                }
            }
            return this;
        }
    };
    LP = $.extend({
        setUrl: function (url, ember, title) {
            if (url) {
                history.pushState({}, title, url);
                LP.Hook.doAction('learn_press_set_location_url', url);
            }
        },
        toggleGroupSection: function (el, target) {
            var $el = $(el),
                isHide = $el.hasClass('hide-if-js');
            if (isHide) {
                $el.hide().removeClass('hide-if-js');
            }
            $el.removeClass('hide-if-js').slideToggle(function () {
                var $this = $(this);
                if ($this.is(':visible')) {
                    $(target).addClass('toggle-on').removeClass('toggle-off');
                } else {
                    $(target).addClass('toggle-off').removeClass('toggle-on');
                }
            });
        },
        overflow: function (el, v) {
            var $el = $(el),
                overflow = $el.css('overflow');
            if (v) {
                $el.css('overflow', v).data('overflow', overflow);
            } else {
                $el.css('overflow', $el.data('overflow'));
            }
        },
        getUrl: function () {
            return window.location.href;
        },
        addQueryVar: function (name, value, url) {
            return (url === undefined ? window.location.href : url).addQueryVar(name, value);
        },
        removeQueryVar: function (name, url) {
            return (url === undefined ? window.location.href : url).removeQueryVar(name);
        },
        reload: function (url) {
            if (!url) {
                url = window.location.href;
            }
            window.location.href = url;
        },

        parseResponse: function (response, type) {
            var m = response.match(/<-- LP_AJAX_START -->(.*)<-- LP_AJAX_END -->/);
            if (m) {
                response = m[1];
            }
            return (type || "json") === "json" ? this.parseJSON(response) : response;
        },
        parseJSON: function (data) {
            var m = (data + '').match(/<-- LP_AJAX_START -->(.*)<-- LP_AJAX_END -->/);
            try {
                if (m) {
                    data = $.parseJSON(m[1]);
                } else {
                    data = $.parseJSON(data);
                }
            } catch (e) {
                data = {};
            }
            return data;
        },
        ajax: function (args) {
            var type = args.type || 'post',
                dataType = args.dataType || 'json',
                data = args.action ? $.extend(args.data, {'lp-ajax': args.action}) : args.data,
                beforeSend = args.beforeSend || function () {
                    },
                url = args.url || window.location.href;
//                        console.debug( beforeSend );
            $.ajax({
                data: data,
                url: url,
                type: type,
                dataType: 'html',
                beforeSend: beforeSend.apply(null, args),
                success: function (raw) {
                    var response = LP.parseResponse(raw, dataType);
                    $.isFunction(args.success) && args.success(response, raw);
                },
                error: function () {
                    $.isFunction(args.error) && args.error.apply(null, LP.funcArgs2Array());
                }
            });
        },
        doAjax: function (args) {
            var type = args.type || 'post',
                dataType = args.dataType || 'json',
                action = ((args.prefix === undefined) || 'learnpress_') + args.action,
                data = args.action ? $.extend(args.data, {action: action}) : args.data;

            $.ajax({
                data: data,
                url: (args.url || window.location.href),
                type: type,
                dataType: 'html',
                success: function (raw) {
                    var response = LP.parseResponse(raw, dataType);
                    $.isFunction(args.success) && args.success(response, raw);
                },
                error: function () {
                    $.isFunction(args.error) && args.error.apply(null, LP.funcArgs2Array());
                }
            });
        },

        funcArgs2Array: function (args) {
            var arr = [];
            for (var i = 0; i < args.length; i++) {
                arr.push(args[i]);
            }
            return arr;
        },
        addFilter: function (action, callback) {
            var $doc = $(document),
                event = 'LP.' + action;
            $doc.on(event, callback);
            LP.log($doc.data('events'));
            return this;
        },
        applyFilters: function () {
            var $doc = $(document),
                action = arguments[0],
                args = this.funcArgs2Array(arguments);
            if ($doc.hasEvent(action)) {
                args[0] = 'LP.' + action;
                return $doc.triggerHandler.apply($doc, args);
            }
            return args[1];
        },
        addAction: function (action, callback) {
            return this.addFilter(action, callback);
        },
        doAction: function () {
            var $doc = $(document),
                action = arguments[0],
                args = this.funcArgs2Array(arguments);
            if ($doc.hasEvent(action)) {
                args[0] = 'LP.' + action;
                $doc.trigger.apply($doc, args);
            }
        },
        toElement: function (element, args) {
            if ($(element).length === 0) {
                return;
            }
            args = $.extend({
                delay: 300,
                duration: 'slow',
                offset: 50,
                container: null,
                callback: null,
                invisible: false
            }, args || {});
            var $container = $(args.container),
                rootTop = 0;
            if ($container.length === 0) {
                $container = $('body, html');
            }
            rootTop = $container.offset().top;
            var to = ($(element).offset().top + $container.scrollTop()) - rootTop - args.offset;

            function isElementInView(element, fullyInView) {
                var pageTop = $container.scrollTop();
                var pageBottom = pageTop + $container.height();
                var elementTop = $(element).offset().top - $container.offset().top;
                var elementBottom = elementTop + $(element).height();

                if (fullyInView === true) {
                    return ((pageTop < elementTop) && (pageBottom > elementBottom));
                } else {
                    return ((elementTop <= pageBottom) && (elementBottom >= pageTop));
                }
            }

            if (args.invisible && isElementInView(element, true)) {
                return;
            }
            $container.fadeIn(10)
                .delay(args.delay)
                .animate({
                    scrollTop: to
                }, args.duration, args.callback);
        },
        uniqueId: function (prefix, more_entropy) {
            if (typeof prefix === 'undefined') {
                prefix = '';
            }

            var retId;
            var formatSeed = function (seed, reqWidth) {
                seed = parseInt(seed, 10)
                    .toString(16); // to hex str
                if (reqWidth < seed.length) { // so long we split
                    return seed.slice(seed.length - reqWidth);
                }
                if (reqWidth > seed.length) { // so short we pad
                    return new Array(1 + (reqWidth - seed.length))
                            .join('0') + seed;
                }
                return seed;
            };

            // BEGIN REDUNDANT
            if (!this.php_js) {
                this.php_js = {};
            }
            // END REDUNDANT
            if (!this.php_js.uniqidSeed) { // init seed with big random int
                this.php_js.uniqidSeed = Math.floor(Math.random() * 0x75bcd15);
            }
            this.php_js.uniqidSeed++;

            retId = prefix; // start with prefix, add current milliseconds hex string
            retId += formatSeed(parseInt(new Date()
                    .getTime() / 1000, 10), 8);
            retId += formatSeed(this.php_js.uniqidSeed, 5); // add seed hex string
            if (more_entropy) {
                // for more entropy we add a float lower to 10
                retId += (Math.random() * 10)
                    .toFixed(8)
                    .toString();
            }

            return retId;
        },
        log: function () {
            //if (typeof LEARN_PRESS_DEBUG != 'undefined' && LEARN_PRESS_DEBUG && console) {
            for (var i = 0, n = arguments.length; i < n; i++) {
                console.log(arguments[i]);
            }
            //}
        },
        blockContent: function () {
            if ($('#learn-press-block-content').length === 0) {
                $(LP.template('learn-press-template-block-content', {})).appendTo($('body'));
            }
            LP.hideMainScrollbar().addClass('block-content');
            $(document).trigger('learn_press_block_content');
        },
        unblockContent: function () {
            setTimeout(function () {
                LP.showMainScrollbar().removeClass('block-content');
                $(document).trigger('learn_press_unblock_content');
            }, 350);
        },
        hideMainScrollbar: function (el) {
            if (!el) {
                el = 'html, body';
            }
            var $el = $(el);
            $el.each(function () {
                var $root = $(this),
                    overflow = $root.css('overflow');
                $root.css('overflow', 'hidden').attr('overflow', overflow);
            });
            return $el;
        },
        showMainScrollbar: function (el) {
            if (!el) {
                el = 'html, body';
            }
            var $el = $(el);
            $el.each(function () {
                var $root = $(this),
                    overflow = $root.attr('overflow');
                $root.css('overflow', overflow).removeAttr('overflow');
            });
            return $el;
        },
        template: typeof _ !== 'undefined' ? _.memoize(function (id, data) {
            var compiled,
                options = {
                    evaluate: /<#([\s\S]+?)#>/g,
                    interpolate: /\{\{\{([\s\S]+?)\}\}\}/g,
                    escape: /\{\{([^\}]+?)\}\}(?!\})/g,
                    variable: 'data'
                };

            var tmpl = function (data) {
                compiled = compiled || _.template($('#' + id).html(), null, options);
                return compiled(data);
            };
            return data ? tmpl(data) : tmpl;
        }, function (a, b) {
            return a + '-' + JSON.stringify(b);
        }) : function () {
            return '';
        },
        alert: function (localize, callback) {
            var title = '',
                message = '';
            if (typeof localize === 'string') {
                message = localize;
            } else {
                if (typeof localize['title'] !== 'undefined') {
                    title = localize['title'];
                }
                if (typeof localize['message'] !== 'undefined') {
                    message = localize['message'];
                }
            }
            $.alerts.alert(message, title, function (e) {
                LP._on_alert_hide();
                callback && callback(e);
            });
            this._on_alert_show();
        },
        confirm: function (localize, callback) {
            var title = '',
                message = '';

            if (typeof localize === 'string') {
                message = localize;
            } else {
                if (typeof localize['title'] !== 'undefined') {
                    title = localize['title'];
                }
                if (typeof localize['message'] !== 'undefined') {
                    message = localize['message'];
                }
            }
            $.alerts.confirm(message, title, function (e) {
                LP._on_alert_hide();
                callback && callback(e);
            });
            this._on_alert_show();

        },
        _on_alert_show: function () {
            var $container = $('#popup_container'),
                $placeholder = $('<span id="popup_container_placeholder" />').insertAfter($container).data('xxx', $container);
            $container.stop().css('top', '-=50').css('opacity', '0').animate({
                top: '+=50',
                opacity: 1
            }, 250);
        },
        _on_alert_hide: function () {
            var $holder = $("#popup_container_placeholder"),
                $container = $holder.data('xxx');
            if ($container) {
                $container.replaceWith($holder);
            }
            $container.appendTo($(document.body))
            $container.stop().animate({
                top: '+=50',
                opacity: 0
            }, 250, function () {
                $(this).remove();
            });
        },
        sendMessage: function (data, object, targetOrigin, transfer) {
            if ($.isPlainObject(data)) {
                data = JSON.stringify(data);
            }
            object = object || window;
            targetOrigin = targetOrigin || '*';
            object.postMessage(data, targetOrigin, transfer);
        },
        receiveMessage: function (event, b) {
            var target = event.origin || event.originalEvent.origin,
                data = event.data || event.originalEvent.data || '';
            if (typeof data === 'string' || data instanceof String) {
                if (data.indexOf('{') === 0) {
                    data = LP.parseJSON(data);
                }
            }
            LP.Hook.doAction('learn_press_receive_message', data, target);
        }
    }, LP);

    $.fn.rows = function () {
        var h = $(this).height();
        var lh = $(this).css('line-height').replace("px", "");
        $(this).attr({height: h, 'line-height': lh});
        return Math.floor(h / parseInt(lh));
    };

    $.fn.checkLines = function (p) {
        return this.each(function () {
            var $e = $(this),
                rows = $e.rows();

            p.call(this, rows);
        });
    };

    $.fn.findNext = function (selector) {
        var $selector = $(selector),
            $root = this.first(),
            index = $selector.index($root),
            $next = $selector.eq(index + 1);
        return $next.length ? $next : false;
    };

    $.fn.findPrev = function (selector) {
        var $selector = $(selector),
            $root = this.first(),
            index = $selector.index($root),
            $prev = $selector.eq(index - 1);
        return $prev.length ? $prev : false;
    };

    $.each(['progress'], function (i, property) {
        $.Tween.propHooks[property] = {
            get: function (tween) {
                return $(tween.elem).css('transform');
            },
            set: function (tween) {
                /*var style = tween.elem.style;
                 var p_begin = parseColor($(tween.elem).css(property));
                 var p_end = parseColor(tween.end);
                 tween.run = function(progress) {
                 style[property] = calculateColor(p_begin, p_end, progress);
                 }*/
                if (tween.now < 180) {
                    $(this).find('.progress-circle').removeClass('gt-50');
                } else {
                    $(this).find('.progress-circle').addClass('gt-50');
                }
                $(tween.elem).find('.fill').css({
                    transform: 'rotate(' + tween.end + 'deg)'
                });
            }
        };
    });

    $.fn.progress = function (v) {
        return this.each(function () {
            var t = parseInt(v / 100 * 360),
                timer = null,
                $this = $(this);

            if (t < 180) {
                $this.find('.progress-circle').removeClass('gt-50');
            } else {
                $this.find('.progress-circle').addClass('gt-50');
            }
            $this.find('.fill').css({
                transform: 'rotate(' + t + 'deg)'
            });

        });
    };

    var xxx = 0;

    function QuickTip(el, options) {
        var $el = $(el),
            uniId = $el.attr('data-id') || LP.uniqueId();

        options = $.extend({
            event: 'hover',
            autoClose: true,
            single: true,
            closeInterval: 1000,
            arrowOffset: null,
            tipClass: ''
        }, options, $el.data());

        $el.attr('data-id', uniId);

        var content = $el.attr('data-content-tip') || $el.html(),
            $tip = $('<div class="learn-press-tip-floating">' + content + '</div>'),
            t = null,
            closeInterval = 0,
            useData = false,
            arrowOffset = options.arrowOffset === 'el' ? $el.outerWidth() / 2 : 8,
            $content = $('#__' + uniId);

        if ($content.length === 0) {
            $(document.body).append($('<div />').attr('id', '__' + uniId).html(content).css('display', 'none'))
        }

        content = $content.html();

        $tip.addClass(options.tipClass);

        $el.data('content-tip', content);
        if ($el.attr('data-content-tip')) {
            //$el.removeAttr('data-content-tip');
            useData = true;
        }

        closeInterval = options.closeInterval;

        if (options.autoClose === false) {
            $tip.append('<a class="close"></a>');
            $tip.on('click', '.close', function () {
                close();
            })
        }

        function show() {
            if (t) {
                clearTimeout(t);
                return;
            }

            if (options.single) {
                $('.learn-press-tip').not($el).QuickTip('close');
            }

            $tip.appendTo(document.body);
            var pos = $el.offset();

            $tip.css({
                top: pos.top - $tip.outerHeight() - 8,
                left: pos.left - $tip.outerWidth() / 2 + arrowOffset
            });
        }

        function hide() {
            t && clearTimeout(t);
            t = setTimeout(function () {
                $tip.detach();
                t = null;
            }, closeInterval);
        }

        function close() {
            closeInterval = 0;
            hide();
            closeInterval = options.closeInterval;
        }

        function open() {
            show();
        }

        if (!useData) {
            $el.html('');
        }

        if (options.event === 'click') {
            $el.on('click', function (e) {
                e.stopPropagation();
                show();
            })
        }

        $(document).on('learn-press/close-all-quick-tip', function () {
            close();
        });
        $el.hover(
            function (e) {
                e.stopPropagation();
                if (options.event !== 'click') {
                    show();
                }
            },
            function (e) {
                e.stopPropagation();
                if (options.autoClose) {
                    hide();
                }
            }
        ).addClass('ready');
        return {
            close: close,
            open: open
        }
    }

    $.fn.QuickTip = function (options) {
        return $.each(this, function () {
            var $tip = $(this).data('quick-tip');

            if (!$tip) {
                $tip = new QuickTip(this, options);
                $(this).data('quick-tip', $tip);
            }

            if ($.type(options) === 'string') {
                $tip[options] && $tip[options].apply($tip);
            }
        })
    }

    function __initSubtabs() {
        $('.learn-press-subtabs').each(function () {
            var $tabContainer = $(this),
                $tabs = $tabContainer.find('a'),
                current = null;
            $tabs.click(function (e) {
                var $tab = $(this),
                    $contentID = $tab.attr('href');
                $tab.parent().addClass('current').siblings().removeClass('current');
                current = $($contentID).addClass('current');
                current.siblings().removeClass('current');
                //LP.setUrl($contentID);
                e.preventDefault();
            }).filter(function () {
                return $(this).attr('href') === window.location.hash;
            }).trigger('click');
            if (!current) {
                $tabs.first().trigger('click');
            }
        });
    }

    $(document).ready(function () {
        if (typeof $.alerts !== 'undefined') {
            $.alerts.overlayColor = '#000';
            $.alerts.overlayOpacity = 0.5;
            $.alerts.okButton = lpGlobalSettings.localize.button_ok;
            $.alerts.cancelButton = lpGlobalSettings.localize.button_cancel;
        }

        $('.learn-press-message.fixed').each(function () {
            var $el = $(this),
                options = $el.data();
            (function ($el, options) {
                if (options.delayIn) {
                    setTimeout(function () {
                        $el.show().hide().fadeIn();
                    }, options.delayIn);
                }
                if (options.delayOut) {
                    setTimeout(function () {
                        $el.fadeOut();
                    }, options.delayOut + (options.delayIn || 0));
                }
            })($el, options);

        });


        $(document).on('input', '#meta-box-tab-course_payment', function (e) {
            var _self = $(this),
                _price = $('#_lp_price'),
                _sale_price = $('#_lp_sale_price'),
                _target = $(e.target).attr('id');
            _self.find('#field-_lp_price div, #field-_lp_sale_price div').remove('.learn-press-tip-floating');
            if (parseInt(_sale_price.val()) >= parseInt(_price.val())) {
                if (_target === '_lp_price') {
                    _price.parent('.rwmb-input').append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_price + '</div>');
                } else if (_target === '_lp_sale_price') {
                    _sale_price.parent('.rwmb-input').append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_sale_price + '</div>');
                }
            }
        });

        $(document).on('change', '#_lp_sale_start', function (e) {
            var _sale_start_date = $(this),
                _sale_end_date = $('#_lp_sale_end'),
                _start_date = Date.parse(_sale_start_date.val()),
                _end_date = Date.parse(_sale_end_date.val()),
                _parent_start = _sale_start_date.parent('.rwmb-input'),
                _parent_end = _sale_end_date.parent('.rwmb-input');

            if (!_start_date) {
                _parent_start.append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_invalid_date + '</div>')
            }

            $('#field-_lp_sale_start div, #field-_lp_sale_end div').remove('.learn-press-tip-floating');
            if (_start_date < _end_date) {
                _parent_start.append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_sale_start_date + '</div>')
            }
        });

        $(document).on('change', '#_lp_sale_end', function (e) {
            var _sale_end_date = $(this),
                _sale_start_date = $('#_lp_sale_start'),
                _start_date = Date.parse(_sale_start_date.val()),
                _end_date = Date.parse(_sale_end_date.val()),
                _parent_start = _sale_start_date.parent('.rwmb-input'),
                _parent_end = _sale_end_date.parent('.rwmb-input');

            if (!_end_date) {
                _parent_end.append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_invalid_date + '</div>')
            }

            $('#field-_lp_sale_start div, #field-_lp_sale_end div').remove('.learn-press-tip-floating');
            if (_start_date < _end_date) {
                _parent_end.append('<div class="learn-press-tip-floating">' + lpAdminCourseEditorSettings.i18n.notice_sale_end_date + '</div>')
            }
        });

        $('body')
            .on('click', '.learn-press-nav-tabs li a', function (e) {
                e.preventDefault();
                var $tab = $(this), url = '';
                $tab.closest('li').addClass('active').siblings().removeClass('active');
                $($tab.attr('data-tab')).addClass('active').siblings().removeClass('active');
                $(document).trigger('learn-press/nav-tabs/clicked', $tab);
            });

        setTimeout(function () {
            $('.learn-press-nav-tabs li.active:not(.default) a').trigger('click');
        }, 300);

        $('body.course-item-popup').parent().css('overflow', 'hidden');
        ///
        (function () {
            var timer = null,
                callback = function () {
                    $('.auto-check-lines').checkLines(function (r) {
                        if (r > 1) {
                            $(this).removeClass('single-lines');
                        } else {
                            $(this).addClass('single-lines');
                        }
                        $(this).attr('rows', r);
                    });
                };
            $(window).on('resize.check-lines', function () {
                if (timer) {
                    timer && clearTimeout(timer);
                    timer = setTimeout(callback, 300);
                } else {
                    callback();
                }
            });
        })();

//        $(document).on('click', '[data-block-content="yes"]', function () {
//            LP.blockContent();
//        });

        $('.learn-press-tooltip, .lp-passing-conditional').LP_Tooltip({offset: [24, 24]});

        $('.learn-press-icon').LP_Tooltip({offset: [30, 30]});

        $('.learn-press-message[data-autoclose]').each(function () {
            var $el = $(this), delay = parseInt($el.data('autoclose'));
            if (delay) {
                setTimeout(function ($el) {
                    $el.fadeOut();
                }, delay, $el);
            }
        });

        $(document).on('click', function () {
            $(document).trigger('learn-press/close-all-quick-tip')
        })
    });
    LearnPress = LP;

})(jQuery);