javascript 通过浏览器操作/图标禁用/启用 Chrome 扩展
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Disable / Enable Chrome Extension Via Browser Action / Icon
提问by TyGoss
The chrome extension I am developing inserts content scripts and css onto every page of a website. However, the user may have a certain page or pages he or she does not want the extension to run on, so it would be great if I could set up the browser action as basically a toggle on / off.
我正在开发的 chrome 扩展将内容脚本和 css 插入网站的每个页面。但是，用户可能有他或她不希望扩展程序运行的某个或多个页面，因此如果我可以将浏览器操作设置为基本上打开/关闭切换，那就太好了。
What I'd like to do is something like this:
我想做的是这样的：
chrome.browserAction.onClicked.addListener(function(tab) {
//IF ENABLED THEN DISABLE
//IF DISABLED THEN ENABLE
}
Any help would be greatly appreciated!
任何帮助将不胜感激！
采纳答案by Andrey
Such API is not provided. But two possible workarounds exist:
不提供此类 API。但是存在两种可能的解决方法：
I. You can use the "disabled" flag variable and update it from your background page.
I. 您可以使用“禁用”标志变量并从您的后台页面更新它。
Background page:
后台页面：
function disableExtension(disabled)
{
chrome.windows.getAll({populate : true}, function (window_list)
{
for (var i = 0; i < window_list.length; ++i)
{
var window = window_list[i];
for (var j = 0; j < window.tabs.length; ++j)
{
var tab = window.tabs[j];
if (checkContentScriptExists(tab))
{
chrome.tabs.executeScript(tab.id, {code : "disabled = " + disabled + ";"}, allTabs: true)
}
}
}
// No matching url found. Open it in the new tab
chrome.tabs.create({ url : url, selected: true });
});
}
And content script should check the condition before the run
并且内容脚本应该在运行前检查条件
if (!disabled) doSomething();
II. A controversial approach to save disable variable within background age content
二、在背景年龄内容中保存禁用变量的有争议的方法
Background page:
后台页面：
function disableExtension(disabled)
{
global.disabled = disabled;
}
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
if (request.msg == "getDisabled") {
sendResponse({disabled: global.disabled});
return true;
}
});
and the content script should query currently disabled status before execution
并且内容脚本应在执行前查询当前禁用状态
chrome.runtime.sendMessage({msg: "getDisabled"}, function(response) {
if (!response.disabled) doSomething();
});
