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根据条件禁用删除键

问题：如何根据条件禁用删除键

背景：

客户希望对于特定列（如第一列），禁止通过del键、backspace键对单元格进行删除。

思路：

1、自定义command，在command内部判断选中的单元格的行列信息，来决定是否执行删除操作。

2、注册该命令，并绑定del、backspace快捷键。

主要代码如下：

var command = {
                canUndo: false,
                execute: function (context, options, isUndo) {
                    var Commands = GC.Spread.Sheets.Commands;
                    if (isUndo) {
                        Commands.undoTransaction(context, options);
                        return true;
                    } else {
                        Commands.startTransaction(context, options);
                        // 第一列禁止删除
                        if (context.getActiveSheet().getActiveColumnIndex() != 0) {
                            return false
                        }

                        Commands.endTransaction(context, options);
                        alert("第一列禁止删除")
                        return true;
                    }
                }
            };

            spread.commandManager().register("ban1", command);
            spread.commandManager().register("ban2", command);

            spread.commandManager().setShortcutKey("ban1", GC.Spread.Commands.Key.del, false, false, false, false);
            spread.commandManager().setShortcutKey("ban2", GC.Spread.Commands.Key.backspace, false, false, false, false);

作者: Lynn.Dou| 审核：Ellia.Duan | 更新时间：2023.12.13