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SpreadJS的筛选功能目前是与Excel在设计上有差异的地方,SpreadJS的筛选按钮会添加到选择区域的上一行,而Excel的筛选按钮会添加到选中区域的第一行。
那么为什么会有这样的设计,举个例子,A1到A5是数据,我需要对这些数据做一个筛选。Excel做不到,它只能给A2到A5做筛选,或者在第一行插入一个空行用做放置筛选图标。但SpreadJS可以做到,同时会将筛选图标添加在列头上。那么既然支持这么做,如果添加筛选的方式跟Excel一样的话(选中位置的第一行添加筛选)只可能把筛选图标添加在A1上。基于这个矛盾,我们调整了UI的行为,改为在选中范围的上一行添加筛选图标。这样不仅支持范围更广,还更容易让人理解。
那么有的时候客户可能会需要更Excel一样的效果,这个时候可以考虑在筛选时候将筛选的range修改一下,使其row 加1,rowCount减1。这样就可以实现跟Excel一样的效果了。
var selection = sheet.getSelections()[0];
var range = new GC.Spread.Sheets.Range(selection.row+1, selection.col, selection.rowCount-1, selection.colCount);
var rowFilter = new GC.Spread.Sheets.Filter.HideRowFilter(range);
如果是在线表格编辑器中做筛选,就需要更改重写筛选按钮的点击逻辑。点击之后调用自己写的命令,以保证该操作可以被回退。首先,我们将筛选的操作定义成一个命令。
var designer = new GC.Spread.Sheets.Designer.Designer(document.getElementById("gc-designer-container"), config);
var spread = designer.getWorkbook();
var sheet = spread.getActiveSheet();
var commandManager = spread.commandManager();
var command = {
canUndo: true,
execute: function (context, options, isUndo) {
var Commands = GC.Spread.Sheets.Commands;
options.cmd = "SetRowFilter";
if (isUndo) {
Commands.undoTransaction(context, options);
return true
} else {
Commands.startTransaction(context, options);
var sheet = context.getSheetFromName(options.sheetName);
var selection = sheet.getSelections()[0];
var range = new GC.Spread.Sheets.Range(selection.row+1, selection.col, selection.rowCount-1, selection.colCount);
var rowFilter = new GC.Spread.Sheets.Filter.HideRowFilter(range);
sheet.rowFilter(rowFilter);
Commands.endTransaction(context, options);
return true
}
}
};
commandManager.register("SetRowFilter", command);
详情见附件demo。
作者: Clark.Pan | 审核:Ellia.Duan | 更新时间:2023.12.13