重写右键菜单清除内容实现清除bindingPath
在SpreadJS中，bindingPath 是一种用于绑定数据的路径。然而在某些情况下，我们可能需要快速清除这个 bindingPath 属性，以便重新进行数据绑定或者进行其他操作。传统的方法可能需要通过复杂的代码或者手动操作来实现，这不仅效率低下，而且容易出错。因此，我们需要一种更加便捷的方法来实现清除 bindingPath 的功能。本文将介绍通过重写右键菜单的“清除内容”选项，当用户点击这个选项时，能够快速清除当前选中单元格区域内的所有单元格的 bindingPath。如下图：
要实现这个需求，只需要重新定义一个Command，然后将原来的Command替换掉即可。
let myClearContents = {
canUndo: true,
name: "myClearContents",
execute: function (context, options, isUndo) {
var Commands = GC.Spread.Sheets.Commands;
if (isUndo) {
Commands.undoTransaction(context, options);
return true;
} else {
Commands.startTransaction(context, options);
let sheet = context.getSheetFromName(options.sheetName);
sheet.suspendPaint();
sheet.suspendEvent();
sheet.suspendCalcService();
options.cmd = "myClearContents";
let selections = sheet.getSelections();
selections.forEach((e) => {
let { row, col, rowCount, colCount } = e;
sheet.clear(
row,
col,
rowCount,
colCount,
GC.Spread.Sheets.SheetArea.viewport,
GC.Spread.Sheets.StorageType.data
);
sheet.clear(
row,
col,
rowCount,
colCount,
GC.Spread.Sheets.SheetArea.viewport,
GC.Spread.Sheets.StorageType.bindingPath
);
});
sheet.resumePaint();
sheet.resumeEvent();
sheet.resumeCalcService();
Commands.endTransaction(context, options);
return true;
}
},
};
spread.commandManager().register("myClearContents", myClearContents);
let oldOpenMenu = spread.contextMenu.onOpenMenu;
spread.contextMenu.onOpenMenu = function (
menuData,
itemsDataForShown,
hitInfo,
spread
) {
oldOpenMenu.apply(this, arguments);
itemsDataForShown.forEach(function (item, index) {
if (item && item.name === "gc.spread.contextMenu.clearContents") {
item.command = "myClearContents";
}
});
};
为了避免撤销栈重做栈的显示信息有误，还需要修改undoList和redoList：
let undoList = GC.Spread.Sheets.Designer.getCommand(
GC.Spread.Sheets.Designer.CommandNames.UndoList
);
let redoList = GC.Spread.Sheets.Designer.getCommand(
GC.Spread.Sheets.Designer.CommandNames.RedoList
);
redoList.commandMap["myClearContents"] = "清除内容";
undoList.commandMap["myClearContents"] = "清除内容";
designerConfig.commandMap = {};
designerConfig.commandMap =
undoList;
designerConfig.commandMap =
redoList;
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