[英]Click event is not working from content script to popup on Google Chrome Extension
[英]Transfer control from popup to content script - Google Chrome Extension
PRINT SCREEN了解我的问题: 链接
我正在构建一个扩展,它将一个按钮插入到特定网页的DOM中。 此插入是通过insert.js中的injectScript()函数实现的,该函数已正确执行并正确输入到清单文件的“content_scripts” :字段中。
injectScript()注入(在当前加载的网页的DOM中,如果是,当然是我正在寻找的页面)一个包含相同inject.js(包含按钮的onclick事件)的脚本标记,一种样式包含按钮CSS的标签,最重要的是,包含从background.html通过调用chrome.extension.sendRequest({greeting:“dami”},function(response){...})获得的文本的div ; 插入此div中的文本用于通过单击我插入的按钮从网页填充其他div。
这很好用,但我还需要解决另一个问题:
我注入到网页的DOM中的特定文本仅在chrome.tabs.onSelectionChanged , chrome.tabs.onUpdated和chrome.history.onVisited事件发生时注入 。 每当我的popup.html通过更改localStorage [“builtin”]修改它时,我也想重新注入此文本。 所以我想要的是:当我点击popup.html页面中的确定按钮时,我想使用chrome.extension.sendRequest({greeting:“reintrodu”},function(response){...}); 从popup.html发送请求到管理我的第一个文本注入的相同内容脚本,但似乎它不起作用。
单击按钮时没有任何反应! 测试警告框不显示任何内容。 当我按下OK按钮时,popup.html就会关闭,似乎没有数据交换。
这是我的popup.html中的OK按钮触发的功能:
function closer()
{
if ($('input[name=check]').is(':checked'))
{
localStorage["builtin"] = document.getElementById("tkey_1").value;
localStorage["build"] = "true";
}
else
{
localStorage["builtin"] = document.getElementById("tkey_1").value;
localStorage["build"] = "false";
}
chrome.extension.sendRequest({greeting: "reintrodu"}, function(response)
{
alert(response.farewell);
});
window.close();
}
chrome.extension.sendRequest({greeting:“reintrodu”},function(response){...})应该将请求发送到inject.js的内容脚本:
chrome.extension.onRequest.addListener(
function(request, sender, sendResponse) {
// console.log(sender.tab ? "from a content script:" + sender.tab.url : "from the extension");
if (request.greeting === "history")
{
console.log("registered in history");
sendResponse({farewell: "goodbye from history"});
PageShowHandler();
}
else if (request.greeting === "historyrem")
{
console.log("registered in historyrem");
sendResponse({farewell: "goodbye from historyrem"});
PageShowHandler();
}
else if (request.greeting === "exploit")
{
console.log("registered in exploit");
sendResponse({farewell: "goodbye from exploit"});
PageShowHandler();
}
else if (request.greeting === "reintrodu")
{
console.log("registered in reintrodu");
sendResponse({farewell: "goodbye from reintrodu"});
//PageShowHandler();
alert('prins reintrodu');
}
else if (request.greeting === "selected")
{
console.log("registered in selected");
sendResponse({farewell: "goodbye from selected"});
PageShowHandler();
}
else
sendResponse({}); // snub them.
});
这是background.html ,与popup.html不同,它似乎适用于初始注入的工作:
<html>
<head>
<script type="text/javascript">
//Fired when a URL is visited, providing the HistoryItem data for that URL.
chrome.tabs.onSelectionChanged.addListener(function(tabId, selectInfo)
{
chrome.tabs.sendRequest(tabId, {greeting: "selected"}, function(response) {
console.log(response.farewell);
});
});
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab)
{
chrome.tabs.sendRequest(tab.id, {greeting: "exploit"}, function(response) {
console.log(response.farewell);
});
});
chrome.history.onVisited.addListener(function(result)
{
//alert(result.url);
//chrome.tabs.sendRequest(null, {greeting: "history"}, function(response) {
// console.log(response.farewell);
//});
chrome.windows.getCurrent(function(w)
{
chrome.tabs.getSelected(w.id, function (tabul)
{
//alert(tabul.id);
chrome.tabs.sendRequest(tabul.id, {greeting: "history"}, function(response) {
console.log(response.farewell);
});
});
});
});
chrome.history.onVisitRemoved.addListener(function(removed)
{
//alert(result.url);
//chrome.tabs.sendRequest(null, {greeting: "historyrem function(response) {
// console.log(response.farewell);
//});
chrome.windows.getCurrent(function(w)
{
chrome.tabs.getSelected(w.id, function (tabul)
{
//alert(tabul.id);
chrome.tabs.sendRequest(tabul.id, {greeting: "historyrem"}, function(response) {
console.log(response.farewell);
});
});
});
});
chrome.extension.onRequest.addListener(function(request, sender, sendResponse)
{
if(request.greeting == "dami")
{
if(localStorage["build"] == "true")
{
sendResponse({farewell: localStorage["builtin"]});
}
else
{
sendResponse({farewell: "textul default"});
}
}
else
{
sendResponse({farewell: "n-am ba; du-te dracu!"});
}
});
</script>
</head>
<body></body>
</html>
这是显而易见的:
{
"name" : "gMail Adder ",
"version" : "1.0",
"description" : "Google Chrome Gmail Adder",
"options_page": "options.html",
"background_page": "background.html",
"run_at": "document_start",
"permissions": [
"tabs",
"history",
"http://*/*",
"https://*/*"
],
"content_scripts": [
{
"matches": ["*://*.google.mail.com/*", "https://*.google.mail.com/*" ,"http://mail.google.com/*" ,"https://mail.google.com/*", "https://www.google.com/*", "http://www.google.com/*", "file:///*"],
"css": ["toggle.css"],
"js": ["jquery-1.4.4.min.js", "inject.js"]
}
],
"browser_action" : {
"default_icon" : "Quest Icon 11.png",
"default_popup": "popup.html"
}
}
在接收来自请求的响应之前,您正在关闭弹出窗口,因为API调用是异步的。
此外,如果您要向内容脚本发送请求,则需要使用chrome.tabs.sendRequest
。
所以你的弹出窗口应该是这样的:
function closer()
{
...
//todo: get tabid of a tab where the content script you are interested in is
chrome.tabs.sendRequest(tabId, {greeting: "reintrodu"}, function(response)
{
alert(response.farewell);
//closing only after receiving response
window.close();
});
}
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