Firefox Addon SDK - 如何使新标签页面只运行一次(Firefox Addon SDK - how to make page in new tabs run only once)

 我是Firefox Addon SDK，高级API的新手。 
 
 我想要做的是，如果用户单击工具栏上的图标，则会打开一个新选项卡，并运行contentscriptfile中定义的脚本。 
 
 我使用下面的脚本： 
 
var self = require("sdk/self");
var tabs = require("sdk/tabs");
var buttons = require('sdk/ui/button/action');

var button = buttons.ActionButton({
  id: "mm-link",
  label: "Visit mm",
  icon: {
    "32": "./icon-32.png",
    "64": "./icon-64.png"
  },
  onClick: handleClick
});

function handleClick(state) {
  tabs.open("about:blank");
  tabs.on('ready', function (tab) {
    tab.attach({
      contentScriptFile: self.data.url("home.js"),
      contentScriptOptions: {"aaa" : "1111", "bob" : "222"}
    });
});
}
 
 但它没有按预期工作，并且存在以下问题： 
 
 
 
 该脚本反复运行。 （我希望它在每个新标签上只运行一次） 
 
 
 即使单击“+”图标创建新选项卡，脚本也会运行。 （我希望它只在单击我在工具栏上创建的图标时运行） 
 
 
 我还尝试将'ready'更改为'activiate'，重复运行问题已经消失，但每次创建选项卡时，脚本都会运行。 
 
 非常感谢任何帮助。 

I am new to Firefox Addon SDK, high level API.
 
What I wanted to do it, if a user click the icon on the toolbar, a new tab is opened, and run the script defined in contentscriptfile.
 
I use the script below:
 
var self = require("sdk/self");
var tabs = require("sdk/tabs");
var buttons = require('sdk/ui/button/action');

var button = buttons.ActionButton({
  id: "mm-link",
  label: "Visit mm",
  icon: {
    "32": "./icon-32.png",
    "64": "./icon-64.png"
  },
  onClick: handleClick
});

function handleClick(state) {
  tabs.open("about:blank");
  tabs.on('ready', function (tab) {
    tab.attach({
      contentScriptFile: self.data.url("home.js"),
      contentScriptOptions: {"aaa" : "1111", "bob" : "222"}
    });
});
}
 
But it doesn't work as expected, and has the following problems:
 
 
 
The script runs repeatedly. (I wanted it run only once on each new tab)
 
 
Even if I click the "+" icon to create a new tab, the script will run. (I wanted it only run when clicking the icon I created on the toolbar)
 
 
I have also tried to change 'ready' to 'activiate', the repeated running problem is gone, but every time I create the tab, the script will run.
 
Many thanks to any help.

原文：https://stackoverflow.com/questions/36857297