Ray*_*den 5 google-chrome-extension
我有一段时间试图在我的内容脚本中获取代码与我的面板交谈.(此扩展为Dev Tools添加了一个新面板.)从我的内容脚本中我可以这样做:
chrome.extension.sendMessage({greeting: "hello"}, function(response) {
console.log(response.farewell);
});
我可以在后台脚本中找到它没问题.
chrome.extension.onMessage.addListener(
function(request, sender, sendResponse) {
if (request.greeting == "hello") sendResponse({farewell: JSON.stringify(sender)});
});
但我需要在我的devtools JS中获取我的信息.这样我就可以与我添加到开发工具的面板交谈.我怎样才能做到这一点？
Sud*_*han 14
要在Devtools页面和多个内容脚本页面之间建立连接,后台页面将用作中介.所以,想法是从有一个渠道devtools来background和background到content scripts.这是处理内容脚本的可变特性所需的通用方法execution time.
您可以使用以下脚本作为devtools.jsto 之间通信的参考content scripts.
的manifest.json
已注册background,devtools以及content scripts清单文件
{
"name": "Inspected Windows Demo",
"description": "This demonstrates Inspected window API",
"devtools_page": "devtools.html",
"manifest_version": 2,
"version": "2",
"permissions": [
"experimental",
"tabs"
],
"background": {
"scripts": [
"background.js"
]
},
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": [
"myscript.js"
]
}
]
}
devtools.html
注册devtools.js遵守CSP
<html>
<head>
<script src="devtools.js"></script>
</head>
<body></body>
</html>
devtools.js
//Created a port with background page for continous message communication
var port = chrome.extension.connect({
name: "Sample Communication" //Given a Name
});
//Posting message to background page
port.postMessage("Request Tab Data");
//Hanlde response when recieved from background page
port.onMessage.addListener(function (msg) {
console.log("Tab Data recieved is " + msg);
});
myscript.js
//Handler request from background page
chrome.extension.onMessage.addListener(function (message, sender) {
console.log("In content Script Message Recieved is " + message);
//Send needed information to background page
chrome.extension.sendMessage("My URL is" + window.location.origin);
});
background.js
//Handle request from devtools
chrome.extension.onConnect.addListener(function (port) {
port.onMessage.addListener(function (message) {
//Request a tab for sending needed information
chrome.tabs.query({
"status": "complete",
"currentWindow": true,
"url": "http://www.google.co.in/"
}, function (tabs) {
for (tab in tabs) {
//Sending Message to content scripts
chrome.tabs.sendMessage(tabs[tab].id, message);
}
});
});
//Posting back to Devtools
chrome.extension.onMessage.addListener(function (message, sender) {
port.postMessage(message);
});
});
您可以http://www.google.co.in/在devtools页面中看到收到的信息
您可以参考以下文档以获取更多信息.