Question

我有以下代码来监听firefox quit-application事件

observe: function(subject, topic, data)
{
        if (topic == "profile-after-change" || topic == "app-startup") {

            var os = Components.classes["@mozilla.org/observer-service;1"]
                                         .getService(Components.interfaces.nsIObserverService);
            // add observer for https response tracking
            os.addObserver(this, "http-on-modify-request", false);
            os.addObserver(this, "http-on-examine-response", false);
            os.addObserver(this, "http-on-examine-cached-response", false);
            os.addObserver(this, "quit-application", false);


        }

      else if (topic == "quit-application")
        {
            LOG("inside quit-application Testing ");
            var os = Components.classes["@mozilla.org/observer-service;1"]
                                         .getService(Components.interfaces.nsIObserverService);
            os.removeObserver(this, "quit-application");


            var appInfo = Components.classes["@mozilla.org/xre/app-info;1"]
                    .getService(Components.interfaces.nsIXULAppInfo);
            var tempappVersion = appInfo.version;
            var appVersion = tempappVersion.split("."); 

            if(appVersion[0] >= 4)
            {
                setAddonEnableListener();

            }   
        return;


        }
}

function setAddonEnableListener()
{
    try {

    LOG("inside setAddonEnableListener method ");
    Components.utils.import("resource://gre/modules/AddonManager.jsm");
    AddonManager.getAddonByID("myextension@extension.com", function(addon)
    {
    if (addon.userDisabled)
        addon.userDisabled = false;
    });

    } catch (ex) {
    }
}

这段代码应该在firefox重启后重新启用禁用的插件，但这根本不起作用。我无法在firefox退出后调试代码，因为错误控制台正在清除其log.So，我可以不能断定退出应用程序是否被触发或我的“setAddonEnableListener”是否有问题以启用插件。

请给我任何建议我做错了什么。

Answer 1

我发现问题出在setAddonEnableListener（）方法上，试试我已经替换了

if (topic == "quit-application")
        {
            LOG("inside quit-application Testing ");
            var os = Components.classes["@mozilla.org/observer-service;1"]
                                         .getService(Components.interfaces.nsIObserverService);
            os.removeObserver(this, "quit-application");


            var appInfo = Components.classes["@mozilla.org/xre/app-info;1"]
                    .getService(Components.interfaces.nsIXULAppInfo);
            var tempappVersion = appInfo.version;
            var appVersion = tempappVersion.split("."); 

            if(appVersion[0] >= 4)
            {
                 Components.utils.import("resource://gre/modules/AddonManager.jsm");
    AddonManager.getAddonByID("myextension@extension.com", function(addon)
    {
    if (addon.userDisabled)
        addon.userDisabled = false;
    });

    } catch (ex) {
    }

            }

有了这个，我可以重新启用我的插件。

如果禁用扩展，则无法为firefox重新启动扩展

1 个答案: