快速加载新页面时重定向选项卡的方法

问题描述

我正试图将标签重定向到一个新的页面，当URL匹配我的模式之前完成加载。我想到的方法在页面的一大部分完成加载后进行重定向。

  var tabs = require（ SDK /选项卡）; 
 var tab_utils = require（sdk / tabs / utils）; 
 
函数logShow（tab）{
 console.log（tab.url +is loaded;+ pattern.test（tab.url））; 
 if（pattern.test（tab.url））{
 var lowLevelTab = viewFor（tab）; 
 console.log（tab_utils.setTabURL（lowLevelTab，newURL（tab.url）））; 
 
 //也简单地用
替换这个位// tab.url =foo不会加快速度
 
 
 
 tabs.on（'load'，logShow）; 
  

是否有调用 setTabURL（...）之前？

解决方案

我终于找到了最好的方法： / p>

 函数监听器（event）{
 var channel = event.subject.QueryInterface（Ci.nsIHttpChannel）; 
 var url = event.subject.URI.spec; 
 
 //在这里你应该评估网址，并决定是否重定向或不。 
 if（pattern.test（url））{
 //如果你想重定向到另一个url，
 //你必须中止当前的请求，参见：[1] ）
 channel.cancel（Cr.NS_BINDING_ABORTED）; 
 
 //设置当前的gbrowser对象（因为
 //用户可能有多个窗口/标签）
 var goodies = loadContextGoodies（channel）; 
 var domWin = goodies.aDOMWindow; // 
提示的方法var gBrowser = goodies.gBrowser; // Noitidart [2]（以下链接）
 var browser = goodies.browser; //参考下面的注释
 var htmlWindow = goodies.contentWindow; 
 
 //并加载固定的URI 
 browser.loadURI（newUrl（url））; 
} else {
 //什么也不做，让Firefox继续正常的流程
} 
} 
 
 exports.main = function（）{ 
 events.on（http-on-modify-request，listener）; 
 
 $ / code> 

其中credit是由于：）（） //stackoverflow.com/questions/13200058/how-to-make-a-redirect-in-firefox-page-mod\">问题由）



[1]：链接：

[2]：：来自主题：和'

I'm trying to redirect a tab to a new page when the URL matches my pattern before it's done loading. The method I came up with does the redirection after a good part of the page is done loading yet.

var tabs = require("sdk/tabs");
var tab_utils = require("sdk/tabs/utils");

function logShow(tab) {
    console.log(tab.url + " is loaded; " + pattern.test(tab.url));
    if (pattern.test(tab.url)) {
        var lowLevelTab = viewFor(tab);
        console.log(tab_utils.setTabURL (lowLevelTab, newURL(tab.url)));

        // also simply replacing this bit with
        // tab.url = "foo" doesn't speed things up
    }
}

tabs.on('load', logShow);

Is there a good way of calling setTabURL (...) earlier?

解决方案

I finally found the best way to do it:

function listener(event) {
    var channel = event.subject.QueryInterface(Ci.nsIHttpChannel);
    var url = event.subject.URI.spec;

    // Here you should evaluate the url and decide if make a redirect or not.
    if (pattern.test(url)) {
        // If you want to redirect to another url,
        // you have to abort current request, see: [1] (links below)
        channel.cancel(Cr.NS_BINDING_ABORTED);

        // Set the current gbrowser object (since
        // the user may have several windows/tabs)
        var goodies = loadContextGoodies(channel);
        var domWin = goodies.aDOMWindow;       // method suggested by
        var gBrowser = goodies.gBrowser;       // Noitidart [2] (links below)
        var browser = goodies.browser;         // for reference see comment below
        var htmlWindow = goodies.contentWindow;

        // and load the fixed URI
        browser.loadURI(newUrl(url));
    } else {
        // do nothing, let Firefox keep going on the normal flow
    }
}

exports.main = function() {
    events.on("http-on-modify-request", listener);
}

credit where credit is due: answer by matagus (on question asked by Andrew)

[1]: Link: Intercepting Page Loads
[2]: Noitidart: 'from topics: How can I change the User Agent in just one tab of Firefox? and Is it possible to know the target DOMWindow for an HTTPRequest?'

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