opera.extension.onconnect

By Opera Software

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Description:

This event listener is invoked when an injected script, popup, or preferences environment is created that enables communication. The event's source (event.source) is a messagePort to the connecting environment. The following function will execute when a preferences page is opened, for example.

Example:

//
// The background process ('/background.js').
//

opera.extension.onconnect = function(event)  {
  var connected = true;
};

This article is licensed under a Creative Commons Attribution 3.0 Unported license.

Comments

QuHno

Sunday, April 1, 2012

To post e.g. the extension's preferences to the injected script you can use:

opera.extension.onconnect = function(event)  {
    event.source.postMessage(JSON.stringify(widget.preferences));
};

In the injected script you can parse the messages like this:

var preferences;

opera.extension.onmessage = function (event) {
    preferences = JSON.parse(event.data);
}

Fr0sT

Wednesday, October 17, 2012

>To post e.g. the extension's preferences to the injected script you can use
Unnecessary, injected scripts have access to widget.preferences directly.

Would be nice if there would be a description for messagePort type. Is there a way to tell what kind of object launched this event (script/tab/prefs)?