Javascript Firefox中的窗口观察器
我正在构建一个扩展,希望捕获窗口事件。我有以下代码: "Javascript Firefox中的窗口观察器,javascript,firefox,firefox-addon,add-on,Javascript,Firefox,Firefox Addon,Add On,我正在构建一个扩展,希望捕获窗口事件。我有以下代码: " function MyWindowObserver() { this.observe=function(aSubject, aTopic, aData) { if(aSubject.innerWidth!=1536) aSubject.close(); } } function myObserver(){} myObserver.prototype = { obser
function MyWindowObserver() {
this.observe=function(aSubject, aTopic, aData) {
if(aSubject.innerWidth!=1536)
aSubject.close();
}
}
function myObserver(){}
myObserver.prototype = {
observe: function(subject, topic, data) {
},
register: function() {
var observerService = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
observerService.addObserver(this, "http-on-modify-request", false);
},
unregister: function() {
var observerService = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
observerService.removeObserver(this, "http-on-modify-request");
}
}
function installButton()
{
var id = "button_cs";
var toolbarId = "nav-bar";
var toolbar = document.getElementById(toolbarId);
//add the button at the end of the navigation toolbar
toolbar.insertItem(id, toolbar.lastChild);
toolbar.setAttribute("currentset", toolbar.currentSet);
document.persist(toolbar.id, "currentset");
//if the navigation toolbar is hidden,
//show it, so the user can see your button
toolbar.collapsed = false;
}
function firstRun(extensions) {
var extension = extensions.get("bak@asda.com");
if (extension.firstRun) {
installButton();
}
}
var myExtension={
Observers:null,
prefs:null,
clock:null,
prevwidth:null,
prevon:null,
BrosNumber:null,
init:function(){
if (Application.extensions)
firstRun(Application.extensions);
else
Application.getExtensions(firstRun);
this.prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefService).getBranch("accessibility.");
this.Observers = new myObserver();
this.Observers.register();
}
};
myExtension.init();
window.addEventListener('load', function(win) {
var observerService = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
observerService.addObserver(new MyWindowObserver(), "toplevel-window-ready", false);
},false);
我做错了什么?AsObject不是最后一个打开的窗口吗
有什么想法吗?这会在修改请求时监视
http
和顶级窗口就绪
观察者不是基于每个窗口的。您只需在全球范围内注册它们
var{interfaces: Ci, utils: Cu} = Components;
Cu.import('resource://gre/modules/Services.jsm');
var observers = {
httpModReq: {
observe: function (aSubject, aTopic, aData) {
console.log('incoming observe httpModReq - aSubject: "' + aSubject + '" | aTopic: "' + aTopic + '" | aData: "' + aData + '"');
var httpChannel, requestURL;
httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);
requestURL = httpChannel.URI.spec;
if (requestURL.indexOf('google.com') > -1) {
//they are loading google
//httpChannel.setRequestHeader('MyCustomRequestHeader', 'hiiii', false);
/*
try {
var Host = httpChannel.getRequestHeader('Host');
} catch (ex) {
//if doesnt have Host header it throws exception "NS_ERROR_NOT_AVAILABLE"
var Host = 'NULL';
}
console.log('REQUEST Header "Host" = ' + Host);
*/
}
},
register: function () {
Services.obs.addObserver(observer.httpModReq, 'http-on-modify-request', false);
},
unregister: function () {
Services.obs.removeObserver(observer.httpModReq, 'http-on-modify-request');
}
},
topWinRdy: {
observe: function (aSubject, aTopic, aData) {
console.log('incoming observe topWinRdy - aSubject: "' + aSubject + '" | aTopic: "' + aTopic + '" | aData: "' + aData + '"');
},
register: function () {
Services.obs.addObserver(observer.topWinRdy, 'toplevel-window-ready', false);
},
unregister: function () {
Services.obs.removeObserver(observer.topWinRdy, 'toplevel-window-ready');
}
}
};
//run this block to start observing
for (var o in observers) {
observers[o].register();
}
/*//run this block when you want to remove the observers
for (var o in observers) {
observers[o].unregister();
}
*/
您可以将其复制粘贴到scratchpad中,并在环境设置为browser的情况下运行它。它可以正常工作。你有一个语法错误:在
register:function(){
之前,你不应该有},
在那里。这不是问题,你说的窗口事件是什么意思?您是否只想查看修改请求时的http
和顶级窗口就绪
?