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我正在編寫將改變我的瀏覽器谷歌佈局的擴展。 當瀏覽器顯示google.com時,我的腳本使用外部css文件。並且它在我打開新標籤之前工作正常--css被清除。我怎樣才能匹配我的CSS只用於谷歌搜索頁面?如何將css應用於理想的頁面?
window.addEventListener("load", function() { myExtension.init(); }, false);
var myExtension = {
init: function() {
var appcontent = document.getElementById("appcontent"); // browser
if(appcontent)
appcontent.addEventListener("DOMContentLoaded", myExtension.onPageLoad, true);
var messagepane = document.getElementById("messagepane"); // mail
if(messagepane)
messagepane.addEventListener("load", function(event) { myExtension.onPageLoad(event); }, true);
},
onPageLoad: function(aEvent) {
var patt_g=new RegExp('google.com','g');
Firebug.Console.log('Hide my ass started');
this.doc = aEvent.originalTarget; // doc is document that triggered "onload" event
CSSProvider.init();
if(patt_g.test(this.doc.location.href)) {
Firebug.Console.log('Hide my ass -> in');
CSSProvider.loadCSS();
} else {
Firebug.Console.log('Hide my ass -> out');
CSSProvider.unloadCSS();
}
// add event listener for page unload
aEvent.originalTarget.defaultView.addEventListener("unload", function(event){ myExtension.onPageUnload(event); }, true);
},
onPageUnload: function(aEvent) {
Firebug.Console.log('Hide my ass deleted');
if(patt_g.test(this.doc.location.href)) {
Firebug.Console.log('Hide my ass -> out');
CSSProvider.unloadCSS();
}
}
};
var CSSProvider = {
init: function(){
this.sss = Components.classes["@mozilla.org/content/style-sheet-service;1"]
.getService(Components.interfaces.nsIStyleSheetService);
this.ios = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
this.uri = this.ios.newURI("chrome://hms/content/style.css", null, null);
this.isRegistered = this.sss.sheetRegistered(this.uri, this.sss.USER_SHEET)
},
loadCSS: function(){
if(!this.isRegistered){
this.sss.loadAndRegisterSheet(this.uri, this.sss.USER_SHEET);
}
},
unloadCSS: function(){
if(this.isRegistered){
this.sss.unregisterSheet(this.uri, this.sss.USER_SHEET);
}
}
};
測試搜索頁面的特性,如特定的DOM元素或功能(例如'function rwt')。 – 2012-01-05 16:14:44
patt_g.test(this.doc.location.href)返回true。如果false - 從所有頁面中刪除css規則。這是一個主要的籌碼 – Castro 2012-01-05 16:26:08