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在使用在线表格编辑器过程中,需要自定义一些符合需求场景的命令,如保存模板结构时,想要获取一些其他数据,这时候可以在execute方法中重写saveSchema命令。但是在Vue中使用路由跳转时,发现一个问题,随着路由跳转的次数增多,execute的执行次数越来越多。
造成此问题的原因是:命令都是从全局静态命令映射 (GC.Spread.Sheets.Designer.getCommand) 中获取。然后重写了自定义命令覆盖了之前的,并注册回全局静态命令映射。因此,每一次路由跳转,都会执行之前覆盖的命令。
为此,可以在重写命令时设置一个开关,如下代码所示:判断command.flag是否为真,因为首次加载时,command.flag为undefined ,所以可以进行命令注册,注册结束后令command.flag为false。这样子路由跳转后,就不会再注册自定义命令,也就不会执行多次execute方法了。
let config = GC.Spread.Sheets.Designer.DefaultConfig;
var command = GC.Spread.Sheets.Designer.getCommand("saveSchema");
var oldExecute = command.execute;
if(!command.flag){
command.execute = function (context, propertyName){
console.log('触发execute')
oldExecute.call(this,context, propertyName)
}
config.commandMap = {
"saveSchema":command
}
command.flag = true;
}
具体可以参考此附件内容。vue router.zip
作者: Ellia.Duan | 审核:Ellia.Duan | 更新时间:2023.12.13