下拉菜单使开发人员能够向工作簿中的单元格添加具有特定属性的下拉菜单。 这些下拉菜单不需要任何额外的代码，只需指定要使用哪一种下拉菜单即可。
SpreadJS目前拥有8种下拉列表，当前介绍的是颜色选择器下拉列表。
你可以通过以下代码来使用颜色选择器下拉列表：
如果你想自定义颜色选择器， 你可以使用下面这些选项：
colorBlockSize: number : 指定每个颜色单元格的大小。
groups: IColorGroup[] : 指定颜色选择器的分组，每个组均接受一个名称作为组名称，并使用一个颜色数组作为该组的颜色。
needScaleColor: boolean : 指定是否生成刻度色组。
例如：
var spreadNS = GC.Spread.Sheets;
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"));
initSpread(spread);
};
function initSpread(spread) {
// -------------------- Default Calculator ---------------------
var sheet = spread.getSheet(0);
sheet.suspendPaint();
var style = new GC.Spread.Sheets.Style();
style.cellButtons = [
{
imageType: GC.Spread.Sheets.ButtonImageType.dropdown,
command: "openColorPicker",
useButtonStyle: true,
}
];
sheet.setText(4, 3, "Default Color Picker");
sheet.setStyle(5, 3, style);
// -------------------- Custom Calculator ---------------------
var colorGroup1 = {
name: 'group1',
colors: [
['#ffffff', '#000000', '#e7e6e6', '#44546a', '#5b9bd5', '#ed7d31', '#a5a5a5', '#ffc000', '#4472c4', '#70ad47'],
['#f2f2f2', '#7f7f7f', '#d1d0d0', '#d6dde4', '#dfebf6', '#fae6d7', '#ececec', '#fdf3ce', '#dae3f2', '#e3efda']
]
};
var colorGroup2 = {
name: 'group2',
colors: [
['#d8d8d8', '#595959', '#aeadac', '#aeb9c8', '#c0d7ed', '#f4ccaf', '#dadada', '#fce69d', '#b6c7e6', '#c8dfb5'],
['#bfbfbf', '#3f3f3f', '#777171', '#8797ae', '#9fc3e4', '#f0b186', '#c8c8c8', '#fbd96c', '#91acda', '#add091']
]
};
var colorGroup3 = {
name: 'group3',
colors: [
['#a5a5a5', '#252525', '#3c3939', '#344051', '#3977b6', '#c35a15', '#7c7c7c', '#bd9014', '#355696', '#5a8339'],
['#7f7f7f', '#0b0b0b', '#171615', '#222a35', '#264f79', '#823c0d', '#525252', '#7e600a', '#223a64', '#3b5825']
]
};
var customStyle = new GC.Spread.Sheets.Style();
customStyle.cellButtons = [
{
imageType: GC.Spread.Sheets.ButtonImageType.dropdown,
command: "openColorPicker",
useButtonStyle: true,
}
];
customStyle.dropDowns = [
{
type: GC.Spread.Sheets.DropDownType.colorPicker,
option: {
colorBlockSize: 20,
groups: [
colorGroup1,
colorGroup2,
colorGroup3
]
}
}
];
sheet.setText(4, 11, "Custom Color Picker");
sheet.setStyle(5, 11, customStyle);
sheet.resumePaint();
spread.commandManager().execute({cmd:"openColorPicker",row:5,col:3,sheetName:"Sheet1"});
// spread.commandManager().execute({cmd:"openColorPicker",row:5,col:11,sheetName:"Sheet1"});
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta name="spreadjs culture" content="zh-cn" />
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css"
href="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-resources-zh/dist/gc.spread.sheets.resources.zh.min.js"
type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" style="width:100%; height: 100%"></div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
