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For my chrome extension, I want to perform an action when the browserAction popup window closes. I understand that there no built-in events are triggered when this happens. I found this suggestion to open a connection with the background script, and then use the connection's port.onDisconnect event to detect that the popup window is closing.
However, when the popup window closes, I see the following error in the Developer Console for the background script:
(BLESSED_EXTENSION context for glkehflnlfekdijfhacccflbffbjhgbd) extensions::messaging:102: Uncaught TypeError: Cannot read property 'destroy_' of undefined{TypeError: Cannot read property 'destroy_' of undefined
at PortImpl.destroy_ (extensions::messaging:102:37)
at dispatchOnDisconnect (extensions::messaging:322:29)}
The scripts that I use are detailed below.
Can you see where I am going wrong?
manifest.json
{ "manifest_version": 2
, "name": "Detect when popup closes"
, "version": "0.1"
, "browser_action": {
"default_icon": "popup.png"
, "default_popup": "popup.html"
}
, "background": {
"scripts": [
"background.js"
]
}
}
popup.html
<!DOCTYPE html>
<body>
<h1>Test</h1>
<script src="popup.js"></script>
</body>
</html>
popup.js
var port = chrome.runtime.connect()
background.js
chrome.runtime.onConnect.addListener(function (externalPort) {
externalPort.onDisconnect = function () {
try {
var ignoreError = chrome.runtime.lastError
} catch (error) {
console.log("onDisconnect")
}
}
)
731
For reference, here's the working version of the background.js script:
chrome.runtime.onConnect.addListener(function (externalPort) {
externalPort.onDisconnect.addListener(function () {
console.log("onDisconnect")
// Do stuff that should happen when popup window closes here
})
console.log("onConnect")
})
onDisconnect is not an assignable property.
It's an object that provides addListener method to register a callback:
externalPort.onDisconnect.addListener(function() {
var ignoreError = chrome.runtime.lastError;
console.log("onDisconnect");
});
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