Is it possible to utilize personalized functionalities in the main.js file of the Firefox Addon SDK?

Why am I encountering difficulties accessing custom functions with the Firefox Addon SDK?

In the code snippet provided below, whenever I click on context menu Sub Item 1, it does not work as intended; It is trying to access the custom function verifyTest() but instead throws a ReferenceError: verifyTest is undefined. On the other hand, clicking Sub Item 2 which calls the built-in function alert() works perfectly fine.

I have also attempted using self.postMessage (and onMessage) without any luck. What steps should I take in order to successfully access (or define) my custom functions that are essential for my addon to function correctly?

///// Content in main.js

function verifyTest() {
    alert('test1');
}

var script1 = 'self.on("click", function(node, data){'+
             '   verifyTest();'+
             '});';

var script2 = 'self.on("click", function(){'+
             '   alert(\'test2\');'+
             '});';

var cm = require("sdk/context-menu");
cm.Menu({
  label: "Main Item",
  context: cm.SelectorContext("body"),
  items: [
    cm.Item({ label: "Sub Item 1", context: cm.SelectorContext("input[type=text]"), contentScript: script1, data: "item1" }),
    cm.Item({ label: "Sub Item 2", context: cm.SelectorContext("input[type=text]"), contentScript: script2, data: "item2" })
  ]
});

Answer №1

Since verifyTest is specifically designated within the scope of main.js, rather than script1.

An alternative approach would involve relocating verifyTest into script1 (as illustrated below).

A more effective solution would be to establish a new file called script1.js (or any other appropriate title) containing the following code:

function verifyTest() {
    alert('test1');
}

self.on("click", function(node, data){
    verifyTest();
});

and utilize contentScriptFile in place of contentScript for loading it (refer to Loading Content Scripts).

cm.Item({ label: "Sub Item 1", context: cm.SelectorContext("input[type=text]"), contentScriptFile: require("sdk/self").data.url("script1.js"), data: "item1" }),

This method enhances readability and maintainability while preventing issues caused by using variables or functions from disparate contexts.

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