在可信页面内容和插件之间传递消息
[英]Message passing between trusted page content and addon
问题描述
I'm unable to pass messages between a trusted page-worker script, and the addon. 
我无法在受信任的页面工作者脚本和插件之间传递消息。
main.js: main.js：
var pageWorkers = require("sdk/page-worker");
var self = require("sdk/self");
// Create a page worker that loads Wikipedia:
pageWorkers.Page({
contentURL: self.data.url("html/worker.html"),
onAttach: function(worker) {
console.log("within onAttach");
worker.port.on("message", function() {
console.log("Message received");
});
worker.port.on("message", function(message) {
console.log("Message received1");
});
},
onReady: function(worker) {
console.log("within onReady");
worker.port.on("message", function() {
console.log("Message received");
});
}
});
worker.html: worker.html：
<html>
<head>
<script src="../js/worker.js"></script>
</head>
<body>
</body>
</html>
worker.js: worker.js：
console.log("trying to emit message");
addon.port.emit("message");
addon.port.emit("message", "value");
console.log("tried to emit message");
In main.js, If I try the following outside of the pageWorkers.Page() call: 在main.js中，如果我在pageWorkers.Page()调用之外尝试以下操作：
pageWorkers.port.on("message", function() {
console.log("Message received");
});
I get the following exception: 我得到以下异常：
Message: TypeError: pageWorkers.port is undefined
Any help would be appreciated. 任何帮助，将不胜感激。 I have tried using postMessages to no avail. 我尝试使用postMessages无济于事。 If asked, I can add that code also. 如果需要，我也可以添加该代码。
1 个解决方案
解决方案1
4 已采纳 2014-04-15 18:21:29
Page workers, like tab attaching and unlike pageMods, don't have an onAttach function. 页面工作程序（如选项卡附加）和pageMods不同，没有onAttach函数。 Nor do they have an onReady , since the contentScriptFile is automatically attached when the HTML is ready. 它们也没有onReady ，因为当HTML准备就绪时，contentScriptFile会自动附加。
main.js main.js
var worker = pageWorkers.Page({
contentURL: self.data.url("html/worker.html")
});
worker.port.on("message", function() {
console.log("Message received");
});
//If your events have the same name then they're the same event,
//irrespective of arguments passed
worker.port.on("message1", function(message) {
console.log("Message received1");
});
worker.js worker.js
console.log("trying to emit message");
addon.port.emit("message");
console.log("trying to emit message1");
addon.port.emit("message1", "value");
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