只允许一个Chrome扩展程序的活动实例 [英] Only allow one active instance of a Chrome extension

问题描述

我的Chrome扩展程序一次只能在每台机器的一个窗口中打开。
执行此条件的最佳方法是什么？例如，是否有一种机制将用户指向运行扩展名的现有选项卡（如果存在此类选项卡）？

我的清单文件的相关部分是如下所示：

manifest.json

  {
 
manifest_version：2，
 
browser_action：{
default_icon：/img/favicon.ico，
 popup：main.html
}，
 
background：{
scripts：[open.js] 
} 
 
 
 
 
 $ b $  open.js 的内容如下：
 
  open.js  
  chrome.browserAction.onClicked.addListener（function（tab）{
 chrome.tabs.create（{'url'：chrome.extension.getURL（'test.html'）}，function （tab）{
}）; 
}）; 
  
 
 
解决方案
 更新包括专注于不同窗口中的标签
 
 
 
因为没有人在这里发布这个问题的答案，它是从Rob W的github中获取的，  https：// github.com/Rob--W/stackexchange-notifications/blob/8947b9982cd7b9e04ccf0ef23510571f39d33c4e/Chrome/using-websocket.js#L66-L82 的。 
 
 
 
这是一个更基本的版本，用基本命令替换原始代码中的openTab（）函数，打开一个新标签。
  var options_url = chrome.extension.getURL（'options.html'）; 
 chrome.tabs.query（{
 url：options_url 
}，函数（tabs）{
 if（tabs.length == 0）{
 chrome.tabs .create（{url：main.html}）; 
} else {
 //如果有多于一个，关闭除第一个
之外的全部（var i = 1; i< ; tabs.length; i ++）
 chrome.tabs.remove（tabs [i] .id）; 
 //将选项页面集中到
 chrome.tabs.update（tabs [0] .id，{active：true}）; 
 chrome.windows.update（tabs [0] .windowId，{focused：true}）
} 
}）; 
  
 
I have a Chrome extension which needs to be open only in one window per machine at a time.
What would be the best way to enforce this condition? For example, is there a mechanism to point the user to an existing tab running the extension, if there exists such a tab?

The relevant parts of my manifest file are as follows:

manifest.json
{

    "manifest_version": 2,

    "browser_action": {
        "default_icon": "/img/favicon.ico",
        "popup": "main.html"
    },

    "background": {
      "scripts": ["open.js"]
    }

}
And the open.js reads as follows:

open.js
chrome.browserAction.onClicked.addListener(function(tab) {
  chrome.tabs.create({'url': chrome.extension.getURL('test.html')}, function(tab) {
  });
});

解决方案
Update Updated to also include focusing on a tab that is in a different window

Since no one posted the answer to this question here it is, taken from Rob W's github as linked in the comments under the question https://github.com/Rob--W/stackexchange-notifications/blob/8947b9982cd7b9e04ccf0ef23510571f39d33c4e/Chrome/using-websocket.js#L66-L82. 

This is a more basic version replacing the openTab() function found in the original code with the basic command to open a new tab.
var options_url = chrome.extension.getURL('options.html');
chrome.tabs.query({
    url: options_url
}, function(tabs) {
    if (tabs.length == 0) {
        chrome.tabs.create({ url: "main.html" });
    } else {
        // If there's more than one, close all but the first
        for (var i=1; i<tabs.length; i++)
            chrome.tabs.remove(tabs[i].id);
        // And focus the options page
        chrome.tabs.update(tabs[0].id, {active: true});
        chrome.windows.update(tabs[0].windowId, {focused:true})
    }
});


                        
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