表格绑定

SpreadJS允许用户使用单元级绑定将表绑定到数据源。

表绑定可以通过两种方式完成。用户可以使用 bindColumns() 方法或 bind() 方法在表单中将表绑定到数据源。

在表单中执行表绑定操作时，必须牢记以下规则：

设置值将变更数据源。
添加或删除行会变更数据源。
添加或删除列不会变更数据源。
删除，清除，移动表或调整表的大小不会变更数据源。
绑定会自动调整表的行数（但列数保持不变）。
公式不会保存到数据源。

绑定表列

要绑定表单中的所有表列，只需将表单绑定到数据源，然后设置 bindColumns() 以及 bindingPath() 方法在 Table 类中。用户还可以使用 dataField 和 name 方法在 TableColumn 类中为表列指定信息。

使用bindColumns（）方法

以下代码使用 bindColumns() 方法和 bindingPath() 方法将数据源表格绑定。

$(function ()
{
// 生成两个数据源
function Company(name, logo, slogan, address, city, phone, email) {
this.name = name;
this.logo = logo;
this.slogan = slogan;
this.address = address;
this.city = city;
this.phone = phone;
this.email = email;
}
function Customer(id, name, company) {
this.id = id;
this.name = name;
this.company = company;
}
function Record(description, quantity, amount) {
this.description = description;
this.quantity = quantity;
this.amount = amount;
}
function Invoice(company, number, date, customer, receiverCustomer, records) {
this.company = company;
this.number = number;
this.date = date;
this.customer = customer;
this.receiverCustomer = receiverCustomer;
this.records = records;
}
var company1 = new Company("Baidu", null, "We know everything!", "Beijing 1st road", "Beijing", "010-12345678", "baidu@baidu.com"),
company2 = new Company("Tecent", null, "We have everything!", "Shenzhen 2st road", "Shenzhen", "0755-12345678", "tecent@qq.com"),
company3 = new Company("Alibaba", null, "We sell everything!", "Hangzhou 3rd road", "Hangzhou", "0571-12345678", "alibaba@alibaba.com"),
customer1 = new Customer("A1", "employee 1", company2),
customer2 = new Customer("A2", "employee 2", company3),
records1 = [new Record("Finance charge on overdue balance at 1.5%", 1, 150), new Record("Invoice #100 for $1000 on 2014/1/1", 1, 150)],
records2 = [new Record("Purchase server device", 2, 15000), new Record("Company travel", 100, 1500), new Record("Company Dinner", 100, 200)],
invoice1 = new Invoice(company1, "00001", new Date(2014, 0, 1), customer1, customer1, records1),
invoice2 = new Invoice(company2, "00002", new Date(2014, 6, 6), customer2, customer2, records2),
dataSource1 = new GC.Spread.Sheets.Bindings.CellBindingSource(invoice1),
dataSource2 = new GC.Spread.Sheets.Bindings.CellBindingSource(invoice2);
function BindingPathCellType() {
GC.Spread.Sheets.CellTypes.Text.call(this);
}
BindingPathCellType.prototype = new GC.Spread.Sheets.CellTypes.Text();
BindingPathCellType.prototype.paint = function (ctx, value, x, y, w, h, style, context) {
if (value === null || value === undefined) {
var sheet = context.sheet, row = context.row, col = context.col;
if (sheet && (row === 0 || !!row) && (col === 0 || !!col)) {
var bindingPath = sheet.getBindingPath(context.row, context.col);
if (bindingPath) {
value = "[" + bindingPath + "]";
}
}
}
GC.Spread.Sheets.CellTypes.Text.prototype.paint.apply(this, arguments);
};
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), {sheetCount: 1});
activeSheet = spread.getActiveSheet();
spread.suspendPaint();
activeSheet.name("FINANCE CHARGE");
var bindingPathCellType = new BindingPathCellType();
activeSheet.getCell(1, 2).bindingPath("company.slogan").cellType(bindingPathCellType).vAlign(GC.Spread.Sheets.VerticalAlign.bottom);
activeSheet.getCell(1, 4).value("INVOICE").foreColor("#58B6C0").font("33px Arial");
activeSheet.getCell(3, 1).bindingPath("company.name").cellType(bindingPathCellType).foreColor("#58B6C0").font("bold 20px Arial");
activeSheet.getCell(5, 1).bindingPath("company.address").cellType(bindingPathCellType);
activeSheet.getCell(5, 3).value("INVOICE NO.").font("bold 15px Arial");
activeSheet.getCell(5, 4).bindingPath("number").cellType(bindingPathCellType);
activeSheet.getCell(6, 1).bindingPath("company.city").cellType(bindingPathCellType);
activeSheet.getCell(6, 3).value("DATE").font("bold 15px Arial");
activeSheet.getCell(6, 4).bindingPath("date").cellType(bindingPathCellType).formatter("MM/dd/yyyy").hAlign(GC.Spread.Sheets.HorizontalAlign.left);
activeSheet.getCell(7, 1).bindingPath("company.phone").cellType(bindingPathCellType);
activeSheet.getCell(7, 3).value("CUSTOMER ID").font("bold 15px Arial");
activeSheet.getCell(7, 4).bindingPath("customer.id").cellType(bindingPathCellType);
activeSheet.getCell(8, 1).bindingPath("company.email").cellType(bindingPathCellType);
activeSheet.getCell(10, 1).value("TO").font("bold 15px Arial");
activeSheet.getCell(10, 3).value("SHIP TO").font("bold 15px Arial");
activeSheet.getCell(11, 1).bindingPath("customer.name").cellType(bindingPathCellType).textIndent(10);
activeSheet.getCell(12, 1).bindingPath("customer.company.name").cellType(bindingPathCellType).textIndent(10);
activeSheet.getCell(13, 1).bindingPath("customer.company.address").cellType(bindingPathCellType).textIndent(10);
activeSheet.getCell(14, 1).bindingPath("customer.company.city").cellType(bindingPathCellType).textIndent(10);
activeSheet.getCell(15, 1).bindingPath("customer.company.phone").cellType(bindingPathCellType).textIndent(10);
activeSheet.getCell(11, 4).bindingPath("receiverCustomer.name").cellType(bindingPathCellType);
activeSheet.getCell(12, 4).bindingPath("receiverCustomer.company.name").cellType(bindingPathCellType);
activeSheet.getCell(13, 4).bindingPath("receiverCustomer.company.address").cellType(bindingPathCellType);
activeSheet.getCell(14, 4).bindingPath("receiverCustomer.company.city").cellType(bindingPathCellType);
activeSheet.getCell(15, 4).bindingPath("receiverCustomer.company.phone").cellType(bindingPathCellType);
activeSheet.addSpan(17, 1, 1, 2);
activeSheet.getCell(17, 1).value("JOB").foreColor("#58B6C0").font("bold 12px Arial");
activeSheet.addSpan(17, 3, 1, 2);
activeSheet.getCell(17, 3).value("PAYMENT TERMS").foreColor("#58B6C0").font("bold 12px Arial");
activeSheet.addSpan(18, 1, 1, 2);
activeSheet.getCell(18, 1).backColor("#DDF0F2");
activeSheet.addSpan(18, 3, 1, 2);
activeSheet.getCell(18, 3).value("Due on receipt").backColor("#DDF0F2").foreColor("#58B6C0").font("12px Arial");
activeSheet.getRange(17, 1, 2, 4, GC.Spread.Sheets.SheetArea.viewport).setBorder(new GC.Spread.Sheets.LineBorder("#58B6C0", GC.Spread.Sheets.LineStyle.thin), {
top: true,
bottom: true,
innerHorizontal: true
});
var table = activeSheet.tables.add("tableRecords", 20, 1, 4, 4, GC.Spread.Sheets.Tables.TableThemes.light6);
table.autoGenerateColumns(false);
var tableColumn1 = new GC.Spread.Sheets.Tables.TableColumn();
tableColumn1.name("DESCRIPTION");
tableColumn1.dataField("description");
var tableColumn2 = new GC.Spread.Sheets.Tables.TableColumn();
tableColumn2.name("QUANTITY");
tableColumn2.dataField("quantity");
var tableColumn3 = new GC.Spread.Sheets.Tables.TableColumn();
tableColumn3.name("AMOUNT");
tableColumn3.dataField("amount");
table.bindColumns([tableColumn1, tableColumn2, tableColumn3]);
table.bindingPath("records");
table.showFooter(true);
table.setColumnName(3, "TOTAL");
table.setColumnValue(2, "TOTAL DUE");
table.setColumnDataFormula(3, "=[@QUANTITY]*[@AMOUNT]");
table.setColumnFormula(3, "=SUBTOTAL(109,[TOTAL])");
activeSheet.getCell(26, 1).formula('="Make all checks payable to "&B4&". THANK YOU FOR YOUR BUSINESS!"').foreColor("gray").font("italic 14px Arial");
activeSheet.options.allowCellOverflow = true;
//调整行高和列宽
activeSheet.setColumnWidth(0, 5);
activeSheet.setColumnWidth(1, 300);
activeSheet.setColumnWidth(2, 115);
activeSheet.setColumnWidth(3, 125);
activeSheet.setColumnWidth(4, 155);
activeSheet.setRowHeight(0, 5);
activeSheet.setRowHeight(1, 40);
activeSheet.setRowHeight(2, 10);
activeSheet.setRowHeight(17, 0);
activeSheet.setRowHeight(18, 0);
activeSheet.setRowHeight(19, 0);
activeSheet.setRowHeight(25, 10);
activeSheet.options.gridline = {showVerticalGridline: false, showHorizontalGridline: false};
//设置数据源
//activeSheet.setDataSource(dataSource1);
activeSheet.setDataSource(dataSource2);
spread.resumePaint();
})

将格式化程序和单元格类型表格绑定列

使用SpreadJS提供的高级列绑定功能，用户还可以将格式器和各种单元格类型与表列以及数据字段和名称绑定在一起。此外，用户还可以在表列内转换公式函数。

bind() 方法可用于将表绑定到包含多个; records的字段，并将表列绑定到其相应记录的data字段。当用户设置其他数据源来填充表数据时，该表将自动绑定到其相应的记录。