Get Window.Opener handle for popups opened within from flash - javascript

I have a webpage (popup) with flash content. When a user clicks a button inside the flash content, it opens up another browser popup window. Next, I need to close the window with flash content from the newly opened popup window through javascript.
The problem is that the window.Opener is null as the popup is invoked inside from flash content. Moreover we dont have access to flash (.FLA) file.
Please help me to get around this.

With ExternalInterface, have your Flash code call openPopup() and closePopup() JS functions in the original window. These functions can keep track of the opener handle.
BTW, popup windows are bad. They are hard to work with, hated by users, and thwarted by browsers. If your client insists, then talk your client out of it. Use an Ajax dialog instead.

Related

How to prevent document from creating new popup windows onclick event of user using javascript

In my wordpress site, some hacker has embedded a script into it somewhere.
The problem I'm having now is, whenever the site is opened, the first time a user clicks anywhere on it, a spam popup appears, due to the hacker's script.
Is there any way I can prevent the popup window from being created with Javascript?
If I can't prevent it, is there any way that I can close the popup using JS? Unfortunately, since the other script is creating it, I don't have a reference to the opened window. I've seen other scripts calling .close() on an opened window, but I don't have a reference to the new window, so I don't know how to close it.
Here's my site.
The popup on your site is opened by something calling window.open. You can prevent it by assigning something else to window.open and running your script before the other script does:
window.open = () => undefined;
(This does work, if I run this code on your site before your site's Javascript runs, no windows get opened)
It's not uncommon for a client to want to implement this, but if you're the server, it'd be better to fix the server to remove the malicious code, rather than try to patch around it.

How do I prevent browsers from blocking the pop-up window that I've created?

I created a simple JavaScript function to display my pop-up window once it loads. But it keeps on being blocked by Firefox and Google Chrome and I have to somehow enable it on the Firefox and Chrome to display the pop-up.
Are there any alternatives for this?
I have a player on the pop-up window so I have to use a pop-up to let the player play automatically. The problem is that if I put it on the page itself, once the user clicks another page the entire page reloads and the player automatically stops for a few seconds until the whole page reloads and I have to prevent this from happening.
The general rule is that popup blockers will engage if window.open or similar is invoked from javascript that is not invoked by direct user action. That is, you can call window.open in response to a button click without getting hit by the popup blocker, but if you put the same code in a timer event it will be blocked. Depth of call chain is also a factor - some older browsers only look at the immediate caller, newer browsers can backtrack a little to see if the caller's caller was a mouse click etc. Keep it as shallow as you can to avoid the popup blockers.
Please take a look at dthorpe's answer here. It covers your question.
You could try putting the player on the original page, and using something like History.js to control page changes (you could have the main page body in one wrapper div that changes, and leave the player outside of it).
Otherwise, you could try (assuming you meant a HTML5 <video> or <audio> player) downloading the data to localStorage/cookie/[other persistent storage mechanism] and have it seek everytime you change a page.
It will be hard to stop browsers from blocking your pop up window, because any way to do so is inherently exploitable; however, if you call the function to open another window from an onclick event, you may be able to circumvent some popup blockers. Also, some popup blockers allow popups when using the https protocol, although not many have this feature, and https can be hard to implement for the average website, if you don't have physical access to the server.
One other option is to open the other page in another tab (like this w3c example; you can 'click' the link with javascript).
You might also want to look at this post, as it is somewhat similar.
I only just discovered you asked this question.
Here's the answer in full.
Basically, you can simply create the popup immediately as the user event is fired, then fill it with content (your player, for instance) as you have it available.

Close window from browser history

I am working on a web application where I am using JavaScript for the client side scripting. Now my requirement is to close all the opened window which were opened through window.showModalDialog().
For this, I read the history of the browser using window.history.length, but I do not know how to close each window. This works well for window.open(), but not for window.showModalDialog().
Could you please guide me to move forward?
You can close the opened window as follows:
To Open:
var window1=window.open("http://somedomain.com");
var window2=window.open("http://someotherdomain.com");
To Close
window1.close();
window2.close();
But be sure you call window1.close() and so on.. on the same script where you opened it.
You should not be using window.showModalDialog. Firefox has deprecated it, and Chrome has removed it. Also take a look at window.showModalDialog: What It is and Why You Should Never Use It.
The idea of showModalDialog is that all scripts are paused while the modal window is open. Thus, using window.close doesn't work, since as long as the window is open, no more scripts are being executed.
One possibility is to have JavaScript in the modal dialog so that is closes itself. You will not be able to close it from outside.

How to create a pop up browser window that contains a GUI and controls a parent browser window

Is there a way in jquery and/or javascript to create a pop up window that can directly effect a parent window in a browser? In my case I want to set up a GUI in the pop up which can move objects in the parent window left/right/up/down. I also need this to work in a dual monitor setting. Any leads on how to do this would be great!
Functions in the child window can control the parent window by using parent. for example:
parent.alert("moo");
You can use window.opener to interact with the opening window, since it sounds like you want to open a new window. So if you have a javascript function declared in the opening window as
function test(){
alert("I'm the parent!");
}
you can call it from a popup window by calling
window.opener.test();
The requirement here is that both the opening window and the open window must be either in the same domain or at least subdomain. If it is the same subdomain, a little work is needed to allow the cross-domain access, which you can read more about here https://stackoverflow.com/a/3962489/1558122.
You would initially open the popup of course by calling window.open from the parent, and dual monitor should not affect the behavior here.
What you really want is probably a dialog, not a window. Windows are cumbersome and require all the HTML a document requires. You could try this jquery plugin: http://jqueryui.com/dialog/ . A dialog requires minimal HTML.
I confess I don't know about the dual-monitor thing.

Close Browser window while unloading

I have MyPage.aspx html page (generated using ASP.Net). When user tries to navigate away from this page, I need to close the window – user should not be able to go back or navigate to another page.
When I used window.close() inside window.onbeforeunload event, it asks for a confirmation to the user. “The webpage you are viewing is trying to close the window. Do you want to close the window?” On clicking “No” the user can escape the close attempt. Is there any way to forcefully close the window without giving an option to the user?
Reference:
How can I close a browser window without receiving the "Do you want to close this window" prompt?
Html javascript to open new window and close current window
"Unknown Exception" when cancelling page unload with "location.href"
Display confirmation popup with JavaScript upon clicking on a link
You can "trick" the browser like this:
window.onbeforeunload = function() {
window.open('', '_self', '');
window.close();
}
It seems to work in chrome/safari/ie/ff: http://jsbin.com/olijig/1
Firefox seems stubborn, but there might be another way to do the same in FF.
I should probably say that this technique is in no way standard and I don’t recommend it at all, and this code might break in many browsers besides firefox.
UPDATE
It actually works in Firefox too (latest version), but not older versions (I tried 3.6.1). You need to do some more testing to confirm the browser compatibility.
No, you can't. The user must be always capable of controlling whatever happens in his browser.
I'm not positive about this, but I believe if you have a window open another window, the parent window can close that child window. Would it be practical to have a landing page that opens your app in a separate window that could then close the window through javascript? Someone can probably elaborate more, as I haven't done this myself.

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