vr-photo/nanjing/js/tvSysBtnBind.v2.1.js

try {
    (function(arr) {
        arr.forEach(function(item) {
            if (item.hasOwnProperty('remove')) {
                return
            }
            Object.defineProperty(item, 'remove', {
                configurable: true,
                enumerable: true,
                writable: true,
                value: function remove() {
                    this.parentNode.removeChild(this)
                }
            })
        })
    })([Element.prototype, CharacterData.prototype, DocumentType.prototype]);
    if (!("classList" in document.documentElement)) {
        Object.defineProperty(HTMLElement.prototype, 'classList', {
            get: function() {
                var self = this;

                function update(fn) {
                    return function(value) {
                        var classes = self.className.split(/\s+/g),
                            index = classes.indexOf(value);
                        fn(classes, index, value);
                        self.className = classes.join(" ")
                    }
                }
                return {
                    add: update(function(classes, index, value) {
                        if (!~index) classes.push(value)
                    }),
                    remove: update(function(classes, index) {
                        if (~index) classes.splice(index, 1)
                    }),
                    toggle: update(function(classes, index, value) {
                        if (~index) classes.splice(index, 1);
                        else classes.push(value)
                    }),
                    contains: function(value) {
                        return !!~self.className.split(/\s+/g).indexOf(value)
                    },
                    item: function(i) {
                        return self.className.split(/\s+/g)[i] || null
                    }
                }
            }
        })
    }

    function fireKeyEvent(el, evtType, keyCode) {
        var doc = el.ownerDocument,
            win = doc.defaultView || doc.parentWindow,
            evtObj;
        if (doc.createEvent) {
            if (win.KeyEvent) {
                evtObj = doc.createEvent('KeyEvents');
                evtObj.initKeyEvent(evtType, true, true, win, false, false, false, false, keyCode, 0)
            } else {
                evtObj = doc.createEvent('UIEvents');
                Object.defineProperty(evtObj, 'keyCode', {
                    get: function() {
                        return this.keyCodeVal
                    }
                });
                Object.defineProperty(evtObj, 'which', {
                    get: function() {
                        return this.keyCodeVal
                    }
                });
                evtObj.initUIEvent(evtType, true, true, win, 1);
                evtObj.keyCodeVal = keyCode;
                if (evtObj.keyCode !== keyCode) {}
            }
            el.dispatchEvent(evtObj)
        } else if (doc.createEventObject) {
            evtObj = doc.createEventObject();
            evtObj.keyCode = keyCode;
            el.fireEvent('on' + evtType, evtObj)
        }
    }
} catch (e) {}

function addClass(ele, cls) {
    if (ele.classList) {
        ele.classList.add(cls)
    } else {
        if (!this.hasClass(ele, cls)) ele.className += " " + cls
    }
}

function arrIndexOf(arr, v) {
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] == v) {
            return i
        }
    }
    return -1
}

function removeClass(ele, cls) {
    if (ele.classList) {
        ele.classList.remove(cls)
    } else {
        if (ele.className != '' && hasClass(ele, cls)) {
            var arrClassName = ele.className.split(' ');
            var classIndex = arrIndexOf(arrClassName, cls);
            if (classIndex !== -1) {
                arrClassName.splice(classIndex, 1);
                ele.className = arrClassName.join(' ')
            }
        }
    }
}

function toggleClass(ele, cls) {
    if (hasClass(ele, cls)) {
        removeClass(ele, cls)
    } else {
        addClass(ele, cls)
    }
}

function hasClass(element, cls) {
    return (' ' + element.className + ' ').indexOf(' ' + cls + ' ') > -1
}

function getClassNames(classStr, target, tagName) {
    target = target ? target : document;
    tagName = tagName ? tagName : "*";
    if (document.getElementsByClassName) {
        return target.getElementsByClassName(classStr)
    } else {
        var nodes = target.getElementsByTagName(tagName),
            ret = [];
        for (i = 0; i < nodes.length; i++) {
            if (hasClass(nodes[i], classStr)) {
                ret.push(nodes[i])
            }
        }
        return ret
    }
}

function getElementLeft(ele) {
    var actualLeft = ele.offsetLeft;
    var current = ele.offsetParent;
    while (current !== null) {
        actualLeft += current.offsetLeft;
        current = current.offsetParent
    }
    return actualLeft
}

function getElementTop(ele) {
    var actualTop = ele.offsetTop;
    var current = ele.offsetParent;
    while (current !== null) {
        actualTop += current.offsetTop;
        current = current.offsetParent
    }
    return actualTop
}
var contains = document.documentElement.contains ? function(parent, node) {
    if (parent) {
        return parent !== node && parent.contains(node)
    }

} : function(parent, node) {
    if (parent) {
        while (node && (node = node.parentNode))
            if (node === parent) return true
        return false
    }

}

function getBoundingClientRect(ele) {
    var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
    var scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
    if (ele.getBoundingClientRect) {
        if (typeof arguments.callee.offset !== 'number') {
            var temp = document.createElement('div');
            temp.style.cssText = "position:absolute;top:0;left:0";
            document.body.appendChild(temp);
            arguments.callee.offset = -temp.getBoundingClientRect().top - scrollTop;
            document.body.removeChild(temp);
            temp = null
        }
        var rect = ele.getBoundingClientRect();
        var offset = arguments.callee.offset;
        return {
            left: rect.left + offset,
            right: rect.right + offset,
            top: rect.top + offset,
            bottom: rect.bottom + offset,
            width: (rect.right + offset) - (rect.left + offset),
            height: (rect.bottom + offset) - (rect.top + offset)
        }
    } else {
        var actualLeft = getElementLeft(ele);
        var actualTop = getElementTop(ele);
        var offsetWidth = ele.offsetWidth;
        var offsetHeight = ele.offsetHeight;
        return {
            left: actualLeft - scrollLeft,
            right: actualLeft + offsetWidth - scrollLeft,
            top: actualTop - scrollTop,
            bottom: actualTop + offsetHeight - scrollTop,
            width: (actualLeft + offsetWidth - scrollLeft) - (actualLeft - scrollLeft),
            height: (actualTop + offsetHeight - scrollTop) - (actualTop - scrollTop)
        }
    }
}

(function(window) {
    var tvSysBtnBind = function(init) {
        var _this = this,
            _self = self;
        var id = init.id ? init.id : null,
            keyRemoveDefault = typeof init.keyRemoveDefault == "undefined" ? false : init.keyRemoveDefault,
            currentIndex = init.currentIndex ? parseInt(init.currentIndex) : 0,
            btnLeft = init.btnLeft ? init.btnLeft : 37,
            btnUp = init.btnUp ? init.btnUp : 38,
            btnRight = init.btnRight ? init.btnRight : 39,
            btnDown = init.btnDown ? init.btnDown : 40,
            btnEnter = init.btnEnter ? init.btnEnter : 13,
            btnBack = init.btnBack ? init.btnBack : 27,
            history = typeof init.history == "undefined" ? true : init.history,
            doublePress = typeof init.doublePress == "undefined" ? false : init.doublePress,
            isFloatLast = typeof init.isFloatLast == "undefined" ? false : init.isFloatLast,
            isCentered = typeof init.isCentered == "undefined" ? true : init.isCentered,
            currentClass = init.currentClass ? init.currentClass : "current",
            effect = init.effect ? init.effect : "slide1",
            element = new Array(),
            rules = init.rules ? init.rules : { hotbutton: {} },
            direction = "y";
        _this.className = init.className ? init.className : "hotbutton";
        this.event = {};
        var _tempElem;
        this.currentIndex = parseInt(currentIndex);
        this.defaultIndex = parseInt(currentIndex);
        this.currentClass = currentClass;
        this.historyFocus = {};
        if (!window.focusobj) window.focusobj = document.createElement("span");
        (typeof init.onLoad) == "function" ? init.onLoad: init.onLoad = function() {};
        (typeof init.onBack) == "function" ? init.onLoad: init.onBack = function() {};
        (typeof init.onCommPress) == "function" ? init.onCommPress: init.onCommPress = function() {};
        this.onLoad = function() {
            focusobj.innerHTML = '<div class="cssbk"><b class="lt"></b><b class="t"></b><b class="rt"></b><b class="r"></b><b class="rb"></b><b class="b"></b><b class="lb"></b> <b class="l"></b></div>';
            addClass(focusobj, "focusobj");
            addClass(focusobj, "current");
            focusobj.style.display = "none";
            _this.target = init.id ? document.getElementById(init.id) : document.body;
            _this.defaultTarget = _this.target;
            _this.currentId = init.id ? init.id : "Jdoc";
            self.getCurRule();
            _this.reLoad();
            _this.sourceClassName = _this.className;
            _this.sourceLength = element.length;
            _this.prev = element[currentIndex];
            _this.prevIndex = currentIndex;
            _this.current = element[currentIndex];
            _this.currentIndex = currentIndex;
            _this.target.appendChild(focusobj);
            init.onLoad.call(_this);
            window.focus();
        }
        self.getCurRule = function(item) {
            var obj = {};
            if (rules) {
                obj = rules["#" + _this.currentId + ">." + _this.className];
                if (typeof obj == "undefined") {
                    if (rules[_this.className]) {
                        obj = rules[_this.className]
                    }
                }
                if (item && typeof rules[item] == "undefined") {
                    // rules[item]={};
                }
            }
            return obj
        }
        this.reSetClass = function(item, index, curClass) {
            var obj = _self.getCurRule(item);
            if (!obj) {
                console.log("初始化" + _this.className + "失败");
                return
            }
            if (typeof obj["history"] == "undefined") obj["history"] = history;
            if (obj["history"]) _this.historyFocus[_this.currentId + _this.className] = _this.currentIndex;
            _this.prevCurrentClass = _this.currentClass;
            if (curClass) {
                _this.currentClass = curClass
            }
            var arr = item.split(">");
            for (var i = 0; i < arr.length; i++) {
                if (arr[i] == "") arr.splice(i)
            }
            for (var i = 0; i < arr.length; i++) {
                if (arr[i].indexOf("#") != -1) {
                    _this.currentId = arr[i].replace("#", "");
                    if (document.getElementById(_this.currentId)) _this.target = document.getElementById(_this.currentId)
                }
                if (arr[i].indexOf(".") != -1) {
                    item = arr[i].replace(".", "")
                }
                if (arr[i].indexOf(".") == -1 && arr[i].indexOf("#") == -1) {
                    item = arr[i]
                }
            }
            if (getClassNames(item, _this.target).length > 0) {
                _self.newItem(item, index)
            } else {
                _this.target = _this.defaultTarget;
                if (getClassNames(item, _this.target).length > 0) _self.newItem(item, index)
            }
        }
        this.onCommPress = function(e) {
            init.onCommPress.call(_this)
        }
        self.newItem = function(item, index) {
            var obj = _self.getCurRule();
            if (_this.prev) removeClass(_this.prev, _this.currentClass);
            if (typeof _this.historyFocus[_this.currentId + item] == "undefined") _this.historyFocus[_this.currentId + item] = 0;
            _this.className = item;
            var idx = obj["savelastIndex"] ? _this.currentIndex : 0;
            index = index > getClassNames(item, _this.target).length - 1 ? getClassNames(item, _this.target).length - 1 : index;
            idx = _this.historyFocus[_this.currentId + item] ? _this.historyFocus[_this.currentId + item] : idx;
            _this.currentIndex = typeof index != "undefined" ? index : idx;
            _this.prevIndex = _this.currentIndex;
            _this.reLoad()
        }
        self.readFn = function() {
            if ((typeof init.onEnterPress) == "function") {
                init.onEnterPress
            } else {
                init.onEnterPress = function() {}
            }
            if ((typeof init.onPress) == "function") {
                init.onPress
            } else {
                init.onPress = function() {}
            }
        }
        this.reLoad = function() {
            self.readFn();
            element = getClassNames(_this.className, _this.target);
            if (element.length <= 0) {
                console.log("初始化" + _this.className + "失败");
                return
            }
            this.hotbtn = element;
            if (element.length <= 0) return false;
            if (_this.currentIndex || _this.currentIndex == 0) {
                _this.currentIndex = parseInt(_this.currentIndex)
            } else {
                _this.currentIndex = parseInt(init.currentIndex)
            }
            if (isload >= 2 && _this.sourceClass == _this.className && _this.sourceLength != element.length && !isSet) {
                if (hasClass(_this.prev, _this.className) && _this.sourceLength > element.length) {
                    _this.currentIndex = _this.currentIndex - (_this.sourceLength - element.length);
                    _this.prevIndex = _this.prevIndex - (_this.sourceLength - element.length);
                    _this.sourceLength = element.length
                } else if (hasClass(_this.prev, _this.className) && _this.sourceLength < element.length) {
                    _this.currentIndex = _this.currentIndex + (element.length - _this.sourceLength);
                    _this.prevIndex = _this.prevIndex + (element.length - _this.sourceLength);
                    _this.sourceLength = element.length
                }
            }
            isSet = false;
            self.overIndex();
            _this.current = element[_this.currentIndex];
            _this.currentIndex = _this.currentIndex;
            _self.render(_this.currentIndex);
            for (var i = 0; i < this.hotbtn.length; i++) {
                this.hotbtn[i].setAttribute("data-id", i)
            }
        }

        function keydefault(e) {
            try {
                e.preventDefault()
            } catch (e) {}
        }
        var isSet = false;
        this.setCurrentIndex = function(index) {
            isSet = true;
            index = parseInt(index);
            _this.currentIndex = index;
            _this.current = element[index]
        }
        this.pageScroll = function(ele, Scroll, direction) {
            if (!ele["data-sum"]) ele["data-sum"] = 0;
            if (!ele["data-sumx"]) ele["data-sumx"] = 0;
            ele.style.position = "relative";
            ele.children[0].style.position = "absolute";
            if (direction == "up") {
                if (ele["data-sum"] - Scroll > 0) {
                    ele["data-sum"] = parseInt(ele["data-sum"]) - Scroll
                } else {
                    ele["data-sum"] = 0
                }
                ele.children[0].style.left = "0";
                ele.children[0].style.top = "-" + ele["data-sum"] + "px"
            } else if (direction == "down") {
                var clientHeight = ele.children[0].clientHeight;
                if (ele["data-sum"] + Scroll < clientHeight - ele.clientHeight / 2) {
                    ele["data-sum"] = parseInt(ele["data-sum"]) + Scroll
                } else {
                    ele["data-sum"] = clientHeight - ele.clientHeight
                }
                ele.children[0].style.left = "0";
                ele.children[0].style.top = "-" + ele["data-sum"] + "px"
            } else if (direction == "left") {
                if (ele["data-sumx"] - Scroll > 0) {
                    ele["data-sumx"] = parseInt(ele["data-sumx"]) - Scroll
                } else {
                    ele["data-sumx"] = clientWidth - ele.clientWidth
                }
                ele.children[0].style.top = "0";
                ele.children[0].style.left = "-" + ele["data-sumx"] + "px"
            } else if (direction == "right") {
                var clientWidth = ele.children[0].clientWidth;
                if (ele["data-sumx"] + Scroll < clientWidth - ele.clientWidth / 2) {
                    ele["data-sumx"] = parseInt(ele["data-sum"]) + Scroll
                } else {
                    ele["data-sumx"] = 0;
                }
                ele.children[0].style.top = "0";
                ele.children[0].style.left = "-" + ele["data-sumx"] + "px"
            }
        }
        this.viewScrollY = function(y, view) {
            var maxTop = view.children[0].clientHeight - view.clientHeight;
            var obj = self.getCurRule();
            var sumtop = view.children[0]["ScrollY"] ? view.children[0]["ScrollY"] : 0;
            var top = sumtop + y;
            middle = getBoundingClientRect(view).height / 2 - getBoundingClientRect(_this.current).height / 2;
            top = top + middle;
            if (top > 0 || maxTop < 0) top = 0;
            else if (Math.abs(top) > Math.abs(maxTop)) {
                top = -maxTop;
                //view.children[0]["ScrollY"] == 0 这个句忘记干嘛的了 留着
            }
            top = obj["customTop"] != undefined ? obj["customTop"] : top;
            view.children[0].style.top = top + "px";
            view.children[0]["ScrollY"] = top
        }
        var maxLeft = 0;
        this.viewScrollX = function(x, view, viewWidth) {
            var maxLeft = viewWidth - view.clientWidth;
            var obj = self.getCurRule();
            var sumleft = view.children[0]["ScrollX"] ? view.children[0]["ScrollX"] : 0;
            var left = sumleft + x;
            middle = getBoundingClientRect(view).width / 2 - getBoundingClientRect(_this.current).width / 2;
            left = left + middle;
            if (left > 0 || maxLeft < 0) left = 0;
            else if (Math.abs(left) > Math.abs(maxLeft)) {
                left = -maxLeft;
            }
            left = obj["customLeft"] != undefined ? obj["customLeft"] : left;
            view.children[0].style.left = left + "px";
            view.children[0]["ScrollX"] = left
        }
        this.onPress = function(e) {
            init.onPress.call(_this)
        }
        this.onEnterPress = function() {
            init.onEnterPress.call(_this)
        }
        window.onBackEvent = this.onBack = function() {
            init.onBack.call(_this)
        }
        self.getScrollTop = function() {
            var scrollTop = 0;
            if (document.documentElement && document.documentElement.scrollTop) {
                scrollTop = document.documentElement.scrollTop
            } else if (document.body) {
                scrollTop = document.body.scrollTop
            }
            return scrollTop
        }
        this.scroll = function(view, direction) {
            var obj = self.getCurRule();
            if (obj == undefined || !obj["direction"]) return;

            direction = direction ? direction : obj["direction"];
            var viewX = view ? view : obj["directionParentX"] ? obj["directionParentX"] : obj["directionParent"] ? obj["directionParent"] : _this.current.parentNode.parentNode;
            var viewY = view ? view : obj["directionParentY"] ? obj["directionParentY"] : obj["directionParent"] ? obj["directionParent"] : _this.current.parentNode.parentNode;
            var sum = 0;
            if (direction.indexOf("x") > -1) {
                if (viewX instanceof Array) {
                    for (var i = 0; i < viewX.length; i++) {

                        if (contains(viewX[i], _this.current)) {
                            viewX = viewX[i];
                        }
                    }
                }

                if (viewX instanceof Array || !contains(viewX, _this.current)) return;
                for (var i = 0; i < _this.hotbtn.length; i++) {
                    sum = getBoundingClientRect(_this.hotbtn[i]).width + sum
                }
                if (_this.hotbtn.length > 1) {
                    if (!obj["scrollWidth"])
                        sum = sum + Math.ceil(getBoundingClientRect(_this.hotbtn[1]).left - getBoundingClientRect(_this.hotbtn[0]).right) * (_this.hotbtn.length);
                    else {
                        sum = _this.hotbtn.length * obj["scrollWidth"]; //因为样式多样性，宽度获取并不准确 所以可以自定义
                    }

                } else {
                    sum = sum;
                }
                viewX.style.position = "relative";
                viewX.children[0].style.position = "absolute";
                viewX.children[0].style.width = (sum + 30) + "px";
                _this.viewScrollX(-(getBoundingClientRect(_this.current).left - getBoundingClientRect(viewX).left), viewX, sum)
            }
            if (direction.indexOf("y") > -1) {
                if (viewY instanceof Array) {
                    for (var i = 0; i < viewY.length; i++) {

                        if (contains(viewY[i], _this.current)) {
                            viewY = viewY[i];
                        }
                    }
                }
                if (viewY instanceof Array || !contains(viewY, _this.current)) return;
                viewY.style.position = "relative";
                viewY.children[0].style.position = "absolute";

                _this.viewScrollY(-(getBoundingClientRect(_this.current).top - getBoundingClientRect(viewY).top), viewY)
            }
        }
        var isload = 0;
        self.render = function(index) {
            if (_this.renderType == "self") return;
            isload = isload + 1;
            if (isload == 2) {
                _this.sourceLength = element.length
            }
            if (_this.prevCurrentClass) {
                var ele = getClassNames(_this.prevCurrentClass, _this.target);
                for (var i = 0; i < ele.length; i++) {
                    if (hasClass(ele[i], _this.prevCurrentClass)) {
                        removeClass(ele[i], _this.prevCurrentClass)
                    }
                }
            }
            if (element[index]) addClass(element[index], _this.currentClass);
            else return;
            for (var i = 0; i < element.length; i++) {
                if (i != index && hasClass(element[i], _this.currentClass)) {
                    removeClass(element[i], _this.currentClass)
                }
            }
            _this.scroll();
            var effect = element[index].getAttribute("data-effect");
            if (effect) {
                focusobj.setAttribute("style", "  position: fixed; z-index: 19;width:" + (getBoundingClientRect(element[index]).width) + "px ;height:" + (getBoundingClientRect(element[index]).height) + "px; left:" + getBoundingClientRect(element[index]).left + "px;top:" + getBoundingClientRect(element[index]).top + "px;");
                focusobj.setAttribute("class", "focusobj current " + effect);
                focusobj.style.display = "list-item"
            } else {
                focusobj.setAttribute("style", "");
                focusobj.style.display = "none"
            }
        }
        self.EventUtil = {
            add: function(obj, callback) {
                if (typeof(obj.onkeypress) == "null") {
                    obj.onkeypress = function(e) {
                        callback && callback(e)
                    }
                } else {
                    obj.onkeydown = function(e) {
                        callback && callback(e)
                    }
                }
            }
        }
        var _t, sum = 0;
        EventUtil.add(document, function(e) {
            _this.renderType = "self";
            if (doublePress) {
                if (sum < 2)
                    clearTimeout(_t);
                sum++;
                _t = setTimeout(function() {
                    _self.onPressFn(e)
                    sum = 0;
                }, 100)
            } else {
                _self.onPressFn(e);
            }


        });
        self.overIndex = function() {
            if (_this.currentIndex >= element.length - 1) {
                _this.currentIndex = element.length - 1
            }
            if (_this.currentIndex < 0) {
                _this.currentIndex = 0
            }
        }
        self.isNumber = function(val) {
            var regPos = /^\d+(\.\d+)?$/;
            var regNeg = /^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;
            if (regPos.test(val) || regNeg.test(val)) {
                return true
            } else {
                return false
            }
        }
        var distance = function(pointA, pointB, type) {
            var P1 = getBoundingClientRect(pointA),
                P2 = getBoundingClientRect(pointB);
            var dist = 0;
            switch (type) {
                case "AA":
                    dist = Math.sqrt(((P1.left - P2.left) * (P1.left - P2.left)) + ((P1.top - P2.top) * (P1.top - P2.top)))
                    break;
                case "AB":
                    dist = Math.sqrt(((P1.left - P2.right) * (P1.left - P2.right)) + ((P1.top - P2.top) * (P1.top - P2.top)))
                    break;
                case "AC":
                    dist = Math.sqrt(((P1.left - P2.right) * (P1.left - P2.right)) + ((P1.top - P2.bottom) * (P1.top - P2.bottom)))
                    break;
                case "AD":
                    dist = Math.sqrt(((P1.left - P2.left) * (P1.left - P2.left)) + ((P1.top - P2.bottom) * (P1.top - P2.bottom)))
                    break;
                case "BA":
                    dist = Math.sqrt(((P1.right - P2.left) * (P1.right - P2.left)) + ((P1.top - P2.top) * (P1.top - P2.top)))
                    break;
                case "BB":
                    dist = Math.sqrt(((P1.right - P2.right) * (P1.right - P2.right)) + ((P1.top - P2.top) * (P1.top - P2.top)))
                    break;
                case "BC":
                    dist = Math.sqrt(((P1.right - P2.right) * (P1.right - P2.right)) + ((P1.top - P2.bottom) * (P1.top - P2.bottom)))
                    break;
                case "BD":
                    dist = Math.sqrt(((P1.right - P2.left) * (P1.right - P2.left)) + ((P1.top - P2.bottom) * (P1.top - P2.bottom)))
                    break;
                case "CA":
                    dist = Math.sqrt(((P1.left - P2.left) * (P1.left - P2.left)) + ((P1.bottom - P2.top) * (P1.bottom - P2.top)))
                    break;
                case "CB":
                    dist = Math.sqrt(((P1.left - P2.right) * (P1.left - P2.right)) + ((P1.bottom - P2.top) * (P1.bottom - P2.top)))
                    break;
                case "CC":
                    dist = Math.sqrt(((P1.left - P2.left) * (P1.left - P2.left)) + ((P1.bottom - P2.bottom) * (P1.bottom - P2.bottom)))
                    break;
                case "CD":
                    dist = Math.sqrt(((P1.right - P2.left) * (P1.right - P2.left)) + ((P1.bottom - P2.bottom) * (P1.bottom - P2.bottom)))
                    break;
                case "DA":
                    dist = Math.sqrt(((P1.left - P2.left) * (P1.left - P2.left)) + ((P1.bottom - P2.top) * (P1.bottom - P2.top)))
                    break;
                case "DB":
                    dist = Math.sqrt(((P1.right - P2.right) * (P1.right - P2.right)) + ((P1.bottom - P2.top) * (P1.bottom - P2.top)))
                    break;
                case "DC":
                    dist = Math.sqrt(((P1.right - P2.left) * (P1.right - P2.left)) + ((P1.bottom - P2.bottom) * (P1.bottom - P2.bottom)))
                    break;
                case "DD":
                    dist = Math.sqrt(((P1.right - P2.right) * (P1.right - P2.right)) + ((P1.bottom - P2.bottom) * (P1.bottom - P2.bottom)))
                    break
            }
            return dist
        }
        self.ruleFn = function(index, direction) {
            var obj = {};
            if (rules) {
                obj = _self.getCurRule()
            }
            if (obj && typeof obj == "object" && typeof obj["line"] != "undefined") {
                var line = obj["line"]
            } else {
                var line = _this.hotbtn.length
            }
            line = parseInt(line);
            if (obj && typeof obj == "object" && typeof obj[_this.currentIndex] != "undefined" && typeof obj[_this.currentIndex][index] != "undefined") {
                var objRules = obj[_this.currentIndex];
                if (self.isNumber(objRules[index])) {
                    _this.currentIndex = parseInt(_this.currentIndex) + parseInt(objRules[index])
                } else if (Array.isArray(objRules[index])) {
                    _this.reSetClass(objRules[index][0], objRules[index][1], objRules[index][2])
                } else if (typeof objRules[index] == "function") {
                    objRules[index].call(_this)
                } else if (typeof obj["line"] != "undefined") {
                    _this.currentIndex = _this.currentIndex + line
                }
            } else {
                var jump = element[_this.currentIndex].getAttribute("data-" + direction);
                jump = parseInt(jump);
                var max = Math.sqrt(window.screen.width * window.screen.width + window.screen.height * window.screen.height);
                if (direction == "up") {
                    if (_this.currentIndex > line - 1 && !obj["autoMove"]) _this.currentIndex = jump ? _this.currentIndex - jump : _this.currentIndex - line;
                    else if (obj && typeof obj["up"] == "object") _this.reSetClass(obj["up"][0], obj["up"][1], obj["up"][2]);
                    else if (obj && typeof obj["up"] == "function") obj["up"].call(_this)
                    else {
                        var min1 = max,
                            min2 = max,
                            curIndex = _this.currentIndex,
                            curIndex2 = _this.currentIndex;
                        for (var i = 0; i < _this.hotbtn.length; i++) {
                            var cur1 = distance(_this.current, _this.hotbtn[i], "AD");
                            var cur2 = distance(_this.current, _this.hotbtn[i], "BC");
                            if (cur1 < min1 && cur1 > 0 && getBoundingClientRect(_this.current).top > getBoundingClientRect(_this.hotbtn[i]).top && _this.currentIndex > i) {
                                min1 = cur1;
                                curIndex = i;
                            }

                            if (cur2 < min2 && cur2 > 0 && getBoundingClientRect(_this.current).top > getBoundingClientRect(_this.hotbtn[i]).top && _this.currentIndex > i) {
                                min2 = cur2;
                                curIndex2 = i;
                            }
                        }
                        curIndex = min1 < min2 ? curIndex : curIndex2;
                        _this.currentIndex = curIndex;
                    }
                } else if (direction == "left") {
                    if ((_this.currentIndex) % line != 0 && !obj["autoMove"]) _this.currentIndex = jump ? _this.currentIndex - jump : _this.currentIndex - 1;
                    else if (obj && typeof obj["left"] == "object") _this.reSetClass(obj["left"][0], obj["left"][1], obj["left"][2]);
                    else if (obj && typeof obj["left"] == "function") obj["left"].call(_this)
                    else {
                        var min1 = max,
                            min2 = max
                        curIndex = _this.currentIndex, curIndex2 = _this.currentIndex;
                        for (var i = 0; i < _this.hotbtn.length; i++) {
                            var cur1 = distance(_this.current, _this.hotbtn[i], "AB");
                            var cur2 = distance(_this.current, _this.hotbtn[i], "DC");
                            if (cur1 < min1 && cur1 > 0 && getBoundingClientRect(_this.current).left > getBoundingClientRect(_this.hotbtn[i]).left && _this.currentIndex > i) {
                                min1 = cur1;
                                curIndex = i;
                            }

                            if (cur2 < min2 && cur2 > 0 && getBoundingClientRect(_this.current).left > getBoundingClientRect(_this.hotbtn[i]).left && _this.currentIndex > i) {
                                min2 = cur2;
                                curIndex2 = i;
                            }
                        }
                        curIndex = min1 < min2 ? curIndex : curIndex2;
                        _this.currentIndex = curIndex
                    }
                } else if (direction == "right") {
                    if ((_this.currentIndex + 1) % line != 0 && !obj["autoMove"]) _this.currentIndex = jump ? _this.currentIndex + jump : _this.currentIndex + 1;
                    else if (obj && typeof obj["right"] == "object") _this.reSetClass(obj["right"][0], obj["right"][1], obj["right"][2]);
                    else if (obj && typeof obj["right"] == "function") obj["right"].call(_this)
                    else {
                        var min1 = max,
                            min2 = max,
                            curIndex = _this.currentIndex,
                            curIndex2 = _this.currentIndex;
                        for (var i = 0; i < _this.hotbtn.length; i++) {
                            var cur1 = distance(_this.current, _this.hotbtn[i], "BA");
                            var cur2 = distance(_this.current, _this.hotbtn[i], "CD");

                            if (cur1 < min1 && cur1 > 0 && getBoundingClientRect(_this.current).right < getBoundingClientRect(_this.hotbtn[i]).right && _this.currentIndex < i) {
                                min1 = cur1;
                                curIndex = i;
                            }

                            if (cur2 < min2 && cur2 > 0 && getBoundingClientRect(_this.current).right < getBoundingClientRect(_this.hotbtn[i]).right && _this.currentIndex < i) {
                                min2 = cur2;

                                curIndex2 = i;
                            }
                        }
                        curIndex = min1 < min2 ? curIndex : curIndex2;
                        _this.currentIndex = curIndex;
                    }
                } else if (direction == "down") {
                    if (_this.hotbtn.length - line > _this.currentIndex && !obj["autoMove"]) _this.currentIndex = jump ? _this.currentIndex + jump : _this.currentIndex + line;
                    else if (obj && typeof obj["down"] == "object") _this.reSetClass(obj["down"][0], obj["down"][1], obj["down"][2]);
                    else if (obj && typeof obj["down"] == "function") obj["down"].call(_this);
                    else if (_this.currentIndex + line > _this.hotbtn.length - 1 && _this.currentIndex + line <= (line - _this.hotbtn.length % line) + _this.hotbtn.length - 1 && _this.hotbtn.length % line != 0 && isFloatLast) {
                        _this.currentIndex = _this.currentIndex + line;
                        self.overIndex()
                    } else {
                        var min1 = max,
                            min2 = max,
                            curIndex = _this.currentIndex,
                            curIndex2 = _this.currentIndex;
                        for (var i = 0; i < _this.hotbtn.length; i++) {
                            var cur1 = distance(_this.current, _this.hotbtn[i], "DA");
                            var cur2 = distance(_this.current, _this.hotbtn[i], "CB");
                            if (cur1 < min1 && cur1 > 0 && getBoundingClientRect(_this.current).bottom < getBoundingClientRect(_this.hotbtn[i]).bottom && _this.currentIndex < i) {
                                min1 = cur1;
                                curIndex = i;
                            }
                            if (cur2 < min2 && cur2 > 0 && getBoundingClientRect(_this.current).bottom < getBoundingClientRect(_this.hotbtn[i]).bottom && _this.currentIndex < i) {
                                min2 = cur2;
                                curIndex2 = i;
                            }
                        }

                        curIndex = min1 < min2 ? curIndex : curIndex2;
                        _this.currentIndex = curIndex;
                    }
                }
            }
        }
        self.rule = function(keyCode) {
            if (element.length <= 0) {
                console.log("初始化" + _this.className + "失败");
                return
            }
            self.overIndex();
            if (keyCode == btnLeft) {
                self.ruleFn(0, "left")
            } else if (keyCode == btnRight) {
                self.ruleFn(2, "right")
            } else if (keyCode == btnUp) {
                self.ruleFn(1, "up")
            } else if (keyCode == btnDown) {
                self.ruleFn(3, "down")
            }
            self.overIndex()
        }
        this.BACK = function() {
            self.onPressFn("back")
        }
        this.LEFT = function() {
            self.onPressFn("left")
        }
        this.RIGHT = function() {
            self.onPressFn("right")
        }
        this.UP = function() {
            self.onPressFn("up")
        }
        this.DOWN = function() {
            self.onPressFn("down")
        }
        self.onPressFn = function(e) {
            var keyCode = "";
            if (typeof e == "object") {
                keyCode = e.keyCode
            } else {
                if (e == "left") {
                    keyCode = btnLeft
                } else if (e == "right") {
                    keyCode = btnRight
                } else if (e == "up") {
                    keyCode = btnUp
                } else if (e == "down") {
                    keyCode = btnDown
                } else if (e == "back") {
                    keyCode = btnBack
                }
            }
            _this.event = e;
            _this.currentIndex = _this.currentIndex >= element.length - 1 ? element.length - 1 : _this.currentIndex;
            _this.prev = element[_this.currentIndex];
            _this.prevIndex = _this.currentIndex;
            self.rule(keyCode);
            _this.current = element[_this.currentIndex];
            _this.currentIndex = _this.currentIndex;
            _this.className = _this.className;
            _this.onCommPress.call(_this);
            if (keyCode == 8 || keyCode == btnBack) {
                if (rules["#" + _this.currentId + ">." + _this.className] && (typeof rules["#" + _this.currentId + ">." + _this.className]["onBack"]) == "function") rules["#" + _this.currentId + ">." + _this.className]["onBack"].call(_this);
                else if (rules[_this.className] && (typeof rules[_this.className]["onBack"]) == "function") rules[_this.className]["onBack"].call(_this);
                else _this.onBack.call(_this)
            }
            if (rules && rules["#" + _this.currentId + ">." + _this.className] && (typeof rules["#" + _this.currentId + ">." + _this.className]["onPress"]) == "function") init.rules["#" + _this.currentId + ">." + _this.className]["onPress"].call(_this);
            else if (rules && rules[_this.className] && (typeof rules[_this.className]["onPress"]) == "function") init.rules[_this.className]["onPress"].call(_this);
            else _this.onPress.call(_this);
            if (keyCode == btnEnter) {
                if (rules["#" + _this.currentId + ">." + _this.className] && (typeof rules["#" + _this.currentId + ">." + _this.className]["onEnterPress"]) == "function") rules["#" + _this.currentId + ">." + _this.className]["onEnterPress"].call(_this);
                else if (rules[_this.className] && (typeof rules[_this.className]["onEnterPress"]) == "function") rules[_this.className]["onEnterPress"].call(_this);
                else _this.onEnterPress.call(_this)
            }
            _this.renderType = "";
            _self.render(_this.currentIndex);
            keydefault(e)
        }
        this.onLoad()
    }
    window.tvSysBtnBind = tvSysBtnBind
})(window)