Namespace.register("U.Control.Calcu"); //注册控件命名空间

/*
The Calculator By:
赖杰辉
蔡旭升
金奕和
*/

U.Control.Calcu.ACnCE = 0;  //判断是否有计算结果，有计算结果值为1，否则为0

U.Control.Calcu.Ans = 0;  //Ans初始化，Ans为上一次运算的结果

U.Control.Calcu.Result = "0"; //计算结果初始化

U.Control.Calcu.RE = /0{1,6}/; //正则表达式

U.Control.Calcu.ACBtn;//记录ac按钮

//运算符键入状态初始化
U.Control.Calcu.SymbolStatus = { LBracket: 0, RBracket: 0, Equal: 0, Dot: 0 };

U.Control.Calcu.BtnTextList = [['(', ')', '%', 'AC'],
                                ['7', '8', '9', '/'],
                                ['4', '5', '6', '*'],
                                ['1', '2', '3', '-'],
                                ['0', '.', '=', '+']];

//运算符集
U.Control.Calcu.MathematicalSymbol = [')', '(', '.', '%', '/', '*',
                                        '-', '+', '=', 'ACnCE'];

U.Control.Calcu.Number = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"];

//页面初始化 调用 U.Control.Calcu.PageInitialization() 返回动态生成的计算器控件窗体
U.Control.Calcu.PageInitialization = function () {
    // $(ParentNode).append('<div id="U_Cal_head"><div id="U_Cal_title_row">计算器</div><div id="U_Cal_switch_btn"></div><img src="IMG/1.jpg" id="U_Cal_switch_btn"><div id="U_Cal_process_output_row"></div><div id="U_Cal_result_output_row">0</div></div><div id="U_Cal_body"></div>');
    /*
    <div id="U_Cal_head">
    <div id="U_Cal_title_row">计算器</div>
    <div id="U_Cal_switch_btn"></div>
    <img src="IMG/1.jpg" id="U_Cal_switch_btn">
    <div id="U_Cal_process_output_row"></div>
    <div id="U_Cal_result_output_row">0</div>
    </div>
    <div id="U_Cal_body"></div>
    */
    var Calcu = $$('div', { "className": "U_Cal", "style": { "width": "228px"} });
    var CalcuHead = $$('div', { "id": "U_Cal_head" }, Calcu);
    var CalcuHeadTittle = $$('div', { "id": "U_Cal_title_row" }, CalcuHead);
    var CalcuHeadSwitchBtn = $$('div', { "id": "U_Cal_switch_btn" }, CalcuHead);
    var CalcuHeadImg = $$('img', { "id": "U_Cal_switch_btn", "src": "http://d.1473.cn/controls/pc/Calculator/IMG/1.jpg" }, CalcuHead);
    var CalcuHeadProcessOutRow = $$('div', { "id": "U_Cal_process_output_row" }, CalcuHead);
    var CalcuHeadResultOuRow = $$('div', { "id": "U_Cal_result_output_row" }, CalcuHead);
    var CalcuBody = $$('div', { "id": "U_Cal_body" }, Calcu);
    //传入生成的div
    U.Control.Calcu.CreateBtn(CalcuBody, CalcuHeadProcessOutRow, CalcuHeadResultOuRow);
    //返回动态生成的计算器控件窗体
    return Calcu;
}

//创建按钮，传入生成的div
U.Control.Calcu.CreateBtn = function (CalcuBody, CalcuHeadProcessOutRow, CalcuHeadResultOuRow) {
    // $('#U_Cal_body')[0].innerHTML = '';
    //创建 Btn Column 后在 Btn Column 内创建Btn并添加点击事件
    U.Control.Calcu.BtnTextList.forEach(function (item, index, array) {
        var BtnColumn = $$('div', { "class": "U_Cal_btn_column" }, CalcuBody);
        item.forEach(function (item, index, array) {
            if (index == 0) {
                var Btn = $$('div', { "class": "U_Cal_btn", "style": { "border-left": "none"} }, BtnColumn);
                Btn.innerHTML = item;
                //添加点击事件
                Btn.addEventListener('click', function () {
                    U.Control.Calcu.JudgmentBtn(item, CalcuHeadProcessOutRow, CalcuHeadResultOuRow);
                }, false);
            } else {
                if (item == "AC") {
                    var ACBtn = $$('div', { "id": "U_Cal_ACnCE", "class": "U_Cal_btn U_Cal_btn_ACnCE" }, BtnColumn);
                    U.Control.Calcu.ACBtn = ACBtn;
                } else if (item == "=") {
                    var ACBtn = $$('div', { "id": "U_Cal_ACnCE", "class": "U_Cal_btn", "style": { "background-color": "#0e79cb"} }, BtnColumn);
                } else {
                    var ACBtn = $$('div', { "class": "U_Cal_btn" }, BtnColumn);
                }
                ACBtn.innerHTML = item;
                ACBtn.onclick = function () {
                    U.Control.Calcu.JudgmentBtn(item, CalcuHeadProcessOutRow, CalcuHeadResultOuRow)
                };
                //添加点击事件
                //                Btn.addEventListener('click', function () {
                //                    U.Control.Calcu.JudgmentBtn(item);
                //                }, false);
            }
        });
    });
}

//根据参数，判断点击按钮
//核心模块待优化，写面条我认了，只求打我的时候轻点 QvQ
U.Control.Calcu.JudgmentBtn = function (BtnText, CalcuHeadProcessOutRow, CalcuHeadResultOuRow) {
    //如果运算结果错误，键入任何内容都将初始化计算器
    if (CalcuHeadResultOuRow.innerHTML == "Error") {
        CalcuHeadResultOuRow.innerHTML = "0";
    }
    //更改ACnCE按钮状态
    if (!U.Control.Calcu.ACnCE) {
        U.Control.Calcu.ACBtn.innerHTML = "CE";
    }
    if (BtnText == "AC") {
        //如果键入的是AC则初始化计算器
        if (U.Control.Calcu.ACnCE) {
            CalcuHeadProcessOutRow.innerHTML = "Ans = " + U.Control.Calcu.Ans;
            U.Control.Calcu.Result = "0";
            CalcuHeadResultOuRow.innerHTML = "0";
        } else {
            //如果键入的是CE则删除上一次键入的内容
            if (U.Control.Calcu.Number.includes(CalcuHeadResultOuRow.innerHTML.slice(-1))) {
                U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, -1);
                CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML.slice(0, -1);
            } else {
                //判断删除的符号
                if (CalcuHeadResultOuRow.innerHTML.slice(-1) == "(") {
                    U.Control.Calcu.SymbolStatus.LBracket = 0;
                    U.Control.Calcu.SymbolStatus.RBracket = 0;
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, -1);
                    CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML.slice(0, -1);
                } else if (CalcuHeadResultOuRow.innerHTML.slice(-1) == ")") {
                    U.Control.Calcu.SymbolStatus.RBracket = 1;
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, -1);
                    CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML.slice(0, -1);
                } else if (CalcuHeadResultOuRow.innerHTML.slice(-1) == ".") {
                    U.Control.Calcu.SymbolStatus.Dot = 0;
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, -1);
                    CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML.slice(0, -1);
                } else {
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, -1);
                    CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML.slice(0, -3);
                }
            }
        }
        //如果键入的是运算符则执行下面的代码
    } else if (U.Control.Calcu.MathematicalSymbol[8] == BtnText) {
        if (U.Control.Calcu.SymbolStatus.RBracket) {
            if (eval(U.Control.Calcu.Result + ")") == Infinity) {
                CalcuHeadProcessOutRow.innerHTML = ""; //$("#U_Cal_result_output_row")[0].innerHTML + ")"
                CalcuHeadResultOuRow.innerHTML = "Error";
                U.Control.Calcu.Result = "0";
                U.Control.Calcu.Ans = 0;
                U.Control.Calcu.ACBtn.innerHTML = "AC";
                U.Control.Calcu.ACnCE = 1;
            } else {
                U.Control.Calcu.Result = eval(U.Control.Calcu.Result + ")").toString();
                CalcuHeadProcessOutRow.innerHTML = CalcuHeadResultOuRow.innerHTML + ")";
                if (U.Control.Calcu.Result.includes('.') && U.Control.Calcu.Result.length - U.Control.Calcu.Result.indexOf('.') - 1 > 6) {
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, U.Control.Calcu.Result.indexOf('.') + 7).replace(U.Control.Calcu.RE, '');
                }
                CalcuHeadResultOuRow.innerHTML = U.Control.Calcu.Result;
                U.Control.Calcu.Ans = U.Control.Calcu.Result;
                U.Control.Calcu.ACBtn.innerHTML = "AC";
                U.Control.Calcu.ACnCE = 1;
            }
        } else {
            if (eval(U.Control.Calcu.Result) == Infinity) {
                CalcuHeadProcessOutRow.innerHTML = ""; //$("#U_Cal_result_output_row")[0].innerHTML
                CalcuHeadResultOuRow.innerHTML = "Error";
                U.Control.Calcu.Result = "0";
                U.Control.Calcu.Ans = 0;
                U.Control.Calcu.ACBtn.innerHTML = "AC";
                U.Control.Calcu.ACnCE = 1;
            } else {
                CalcuHeadProcessOutRow.innerHTML = CalcuHeadResultOuRow.innerHTML;
                U.Control.Calcu.Result = eval(U.Control.Calcu.Result).toString();
                if (U.Control.Calcu.Result.includes('.') && U.Control.Calcu.Result.length - U.Control.Calcu.Result.indexOf('.') - 1 > 6) {
                    U.Control.Calcu.Result = U.Control.Calcu.Result.slice(0, U.Control.Calcu.Result.indexOf('.') + 7).replace(U.Control.Calcu.RE, '');
                }
                CalcuHeadResultOuRow.innerHTML = U.Control.Calcu.Result;
                U.Control.Calcu.Ans = U.Control.Calcu.Result;
                U.Control.Calcu.ACBtn.innerHTML = "AC";
                U.Control.Calcu.ACnCE = 1;
            }
        }
    } else if (U.Control.Calcu.MathematicalSymbol.slice(0, 2).includes(BtnText)) {
        //判断括号闭合状态，如果需要键入右括号且上一个键入符非左括号则运行if内的语句
        if (BtnText == ")" && U.Control.Calcu.SymbolStatus.RBracket == 1 && U.Control.Calcu.Result.slice(-1) != "(") {
            //更改括号键入状态，需要键入右括号
            U.Control.Calcu.SymbolStatus.RBracket = 0;
            U.Control.Calcu.SymbolStatus.LBracket = 0;
            U.Control.Calcu.Result = U.Control.Calcu.Result + BtnText;
            CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML + BtnText;
            U.Control.Calcu.ACnCE = 0;
            U.Control.Calcu.ACBtn.innerHTML = "CE";
        } else if (BtnText == "(" && U.Control.Calcu.SymbolStatus.LBracket == 0 && U.Control.Calcu.Result.slice(-1) != ")") {  //判断左括号键入状态
            if (U.Control.Calcu.Result == "0") {
                U.Control.Calcu.SymbolStatus.RBracket = 1;
                //更改括号键入状态，不允许键入多个左括号
                U.Control.Calcu.SymbolStatus.LBracket = 1;
                U.Control.Calcu.Result = "(";
                CalcuHeadResultOuRow.innerHTML = BtnText;
                U.Control.Calcu.ACnCE = 0;
                U.Control.Calcu.ACBtn.innerHTML = "CE";
            } else if (U.Control.Calcu.SymbolStatus.LBracket == 0 && !U.Control.Calcu.Number.includes(U.Control.Calcu.Result.slice(-1))) {
                U.Control.Calcu.SymbolStatus.RBracket = 1;
                U.Control.Calcu.SymbolStatus.LBracket = 1;
                U.Control.Calcu.Result = U.Control.Calcu.Result + BtnText;
                CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML + BtnText;
                U.Control.Calcu.ACnCE = 0;
                U.Control.Calcu.ACBtn.innerHTML = "CE";
            }
        }
    } else if (U.Control.Calcu.MathematicalSymbol.slice(3, 8).includes(BtnText) && !U.Control.Calcu.MathematicalSymbol.slice(1, 8).includes(U.Control.Calcu.Result.slice(-1))) {
        U.Control.Calcu.Result = U.Control.Calcu.Result + BtnText;
        U.Control.Calcu.SymbolStatus.Dot = 0;
        CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML + " " + BtnText + " ";
        U.Control.Calcu.ACnCE = 0;
        U.Control.Calcu.ACBtn.innerHTML = "CE";
    } else if (U.Control.Calcu.MathematicalSymbol[2] == BtnText && !U.Control.Calcu.MathematicalSymbol.slice(0, 8).includes(U.Control.Calcu.Result.slice(-1)) && U.Control.Calcu.SymbolStatus.Dot == 0) {
        U.Control.Calcu.Result = U.Control.Calcu.Result + BtnText;
        U.Control.Calcu.SymbolStatus.Dot = 1;
        U.Control.Calcu.ACnCE = 0;
        U.Control.Calcu.ACBtn.innerHTML = "CE";
        CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML + BtnText;
    } else if (U.Control.Calcu.Number.includes(BtnText) && U.Control.Calcu.Result != "0") {
        U.Control.Calcu.Result = U.Control.Calcu.Result + BtnText;
        U.Control.Calcu.ACnCE = 0;
        U.Control.Calcu.ACBtn.innerHTML = "CE";
        CalcuHeadResultOuRow.innerHTML = CalcuHeadResultOuRow.innerHTML + BtnText;
    } else if (U.Control.Calcu.Number.includes(BtnText)) {
        U.Control.Calcu.Result = BtnText;
        CalcuHeadResultOuRow.innerHTML = BtnText;
        U.Control.Calcu.ACnCE = 0;
        U.Control.Calcu.ACBtn.innerHTML = "CE";
    }
}


//Sample
// window.onload = function () {
// $('body').append(U.Control.Calcu.PageInitialization());
// }