Allow us to discover what window opened the current window

[pushkin-]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Problem Description

When a window is opened, I would like to know what window opened it.

For example if the window with ID 1 triggered a window.open call, I'd like to know that the window with ID 2 was opened by window 1.

Currently, the referrer information passed to the new-window handler only contains a URL property (which in my case is always '' for some reason).

Proposed Solution

Can the referrer argument get an additional property that tells us the ID of the window that's making the window.open call?
(I'm not sure how this will fit into the new setWindowOpenOverride mechanism)

Alternatively, maybe the BrowserWindow class can have an openerWindowId type of property that gives us this information. That would maybe be preferable.

Alternatives Considered

I can work around it by passing in the window ID like so:

// ... inside of the browser-window-created handler
window.webContents.addListener("new-window", function (): void {
	[].push.call(arguments, window.id);
	newWindowHandler.apply(null, arguments);
});

[Plastikmensch]

If I'm understanding correctly, you can already do that by combining the browser-window-created and new-window event
Example:

app.on('browser-window-created', (event, win) => {
    win.webContents.on('new-window', () => {
        console.log('${win.id} opened a new window`)
    }
}

You can also get the id of the new window by creating it yourself.
Opening new windows by default is not a good idea.

[pushkin-]

@Plastikmensch Yes, that's solution I proposed at the end. But I would prefer a simple property that would tell me the opener window rather than doing what I did.

In my situation, I do want to allow windows to open windows by default.