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       
(Showing Draft Content)

给一列设置组合框

需求:SpreadJS如何给表格某一列设置ComboBox

背景:

用户有这样一个需求:创建一个表格,给表格某一列设置组合框ComboBox。

实现方式:

目前有两种方案,我们以具体的demo为例来详细介绍这两种方案:

方案1:

在设计器里设计好模板,然后绑定数据源。

我们先在设计器里设计好一个表格模板,给最后一列设置组合框。如下图:

115156wdqefzoykolnffmd

115229mvmpasv2drv7bmnr

将模板导出为js文件,引入到demo中,绑定数据源。

var dataSource = {
  person: [
    { name: "lily", age: "15", girl: "1" },
    { name: "mary", age: "12", girl: "1" },
    { name: "tom", age: "17", girl: "0" },
    { name: "dong", age: "14", girl: "0" },
    { name: "luna", age: "15", girl: "1" },
    { name: "aimi", age: "12", girl: "1" },
  ],
};
var datasource = new GC.Spread.Sheets.Bindings.CellBindingSource(dataSource);
sheet.setDataSource(datasource);

这个时候我们会发现,ComboBox所在表格列显示的 0 或 1,并不是我们期待的 ”是或否“。

115314nveueuu7ib7mve7x

这是因为使用了setDataSource,会更新这个模板的内容,原先的设置就没有了,所以我们要给表格这列重新设置ComboBox。

var table = sheet.tables.all()[0];
var row = table.dataRange().row;
var col = table.dataRange().col;
var rowCount = table.dataRange().rowCount;
var colCount = table.dataRange().colCount;

var combo = sheet.getCellType(row,colCount-1);
combo.editorValueType(GC.Spread.Sheets.CellTypes.EditorValueType.value);
//给表格最后一列设置组合框
sheet.getRange(row,colCount-1,rowCount,1).cellType(combo);

好了,现在就可以正常显示ComboBox的值了。

115355m31g668by1k8bbx6

这个时候又出现了新的问题,当我们给表格插入/删除行时会发现ComboBox所在列显示不正常。

115418yf31dh9pz3qh873i

有一个解决方式,那就是监听TableRowsChanged事件,当表格行数改变时,重新给组合框列设置ComboBox。

spread.bind(GC.Spread.Sheets.Events.TableRowsChanged, function (e, data) {
  var newTable = sheet.tables.all()[0];
  var newRow = table.dataRange().row;
  var newCol = table.dataRange().col;
  var newRowCount = table.dataRange().rowCount;
  var newColCount = table.dataRange().colCount;
  if (newRowCount > rowCount) {
    //增加表格行时,重新给表格列设置组合框
    sheet
      .getRange(newRow, newCol + newColCount - 1, newRowCount, 1)
      .cellType(combo);
  } else {
    //删除表格行时,删除表格外组合框
    sheet
      .getRange(newRow, newCol + newColCount - 1, newRowCount, 1)
      .cellType(combo);
    sheet
      .getRange(
        newRow + newRowCount,
        newCol + newColCount - 1,
        rowCount - newRowCount,
        1
      )
      .cellType(null);
  }
});

现在插入/删除表格行就没有问题了。附件有本例demo,可以查看具体的代码。

方案2:

不通过模板设计,通过代码绑定表格字段。

var dataSource = {
  person: [
    { name: "lily", age: "15", girl: "1" },
    { name: "mary", age: "12", girl: "1" },
    { name: "tom", age: "17", girl: "0" },
    { name: "dong", age: "14", girl: "0" },
    { name: "luna", age: "15", girl: "1" },
    { name: "aimi", age: "12", girl: "1" },
  ],
};
var combo = new GC.Spread.Sheets.CellTypes.ComboBox();
combo
  .items([
    { text: "是", value: "1" },
    { text: "否", value: "0" },
  ])
  .editorValueType(GC.Spread.Sheets.CellTypes.EditorValueType.value);

var table = sheet.tables.add("person", 0, 0, 2, 3);
var tableColumn1 = new GC.Spread.Sheets.Tables.TableColumn(1, "name", "NAME");
var tableColumn2 = new GC.Spread.Sheets.Tables.TableColumn(2, "age", "AGE");
var tableColumn3 = new GC.Spread.Sheets.Tables.TableColumn(
  3,
  "girl",
  "GIRL",
  null,
  combo
); //在这里绑定了ComboBox

table.autoGenerateColumns(false);
table.bind([tableColumn1, tableColumn2, tableColumn3], "person", dataSource);

这种方式因为是直接将ComboBox设置在表格列上,所以可以正常的插入/删除行。

不过这种方式下表格字段只能通过代码绑定,所以当字段过多时没有模板设计来的方便。

大家可以根据需要自行选择。

表格绑定数据源组合框.zip

作者: Lynn.Dou | 审核:Lynn.Dou | 更新时间:2023.11.15