Question

I’m currently have some issue with an iframe…

I have my iframe with a searchbox and i want to make this searchbox redirection when i click on go by creating a new tab/window

http://img51.imageshack.us/i/issuec.png/

So to be clear, my google chrome extension call as a content script : overlay.js Then this one will put at the end of the current page my “overlay.html” page.

So the problem come from that my .html is represented as a iframe and i don’t see how i can redirect from this iframe.

overlay.html

<form id="searchForm" action="#" onsubmit="searchBoxRedirection(this)" method="post">
<img id="logo" src="images/extension.png" alt="Logo"></img>
<input type="search" value="" name="searching">
<input type="submit" value="Go !" /> 
</form>

overlay.js

var overlay= {
    init: function() {
        this.injectoverlay();
        //alert('Initialisation reussie');
    },

    injectoverlay: function() {
        var body = $('body'),
            overlayURL = chrome.extension.getURL("overlay.html"),
            iframe = $('<iframe id="YouroverlayFrame" src="'+overlayURL+'">');

            body.append(iframe);
            iframe.show();

        //alert('Injection reussie');
    }
}

Tool.js

function searchBoxRedirection(form)
{
    tabs.create({url:"www.yahoo.fr"});
}

manifest.json

{   

    "background_page" : "background.html",
    "browser_action" :
    {
        "default_icon" : "images/Extension.png"
    },
    "content_scripts": 
    [ {
      "all_frames": true,
      "css": ["css/overlay.css"],
      "js": ["js/overlay.js"],
      "matches": ["http://*/*"],
      "run_at": "document_start"
    } ], 
    "permissions" : ["tabs", "unlimitedStorage", "http://*/*"], 
    "name" : "MyOverlay",
    "version" : "1.1",
    "description" : "Sindar Overlay"
}

Answer 1

Since your using Content-Scripts you cannot call any Chrome API except a few chrome.extensions.*

Here are some examples of what content scripts can do:

Documentation Quote

Find unlinked URLs in web pages and
convert them into hyperlinks’

• Increase the font size to make text more legible
• Find and process microformat data in the DOM

However, content scripts have some
limitations. They cannot:

• Use chrome.* APIs (except for parts of chrome.extension)
• Use variables or functions defined by their extension’s pages
• Use variables or functions defined by web pages or by other content
  scripts
• Make cross-site XMLHttpRequests

Now to do what you want, you need to goto a link, you have two choices:

1. Use Messaging to redirect the page.
2. Call “parent” within the iframe to do a redirect.

Messaging approach

Messaging is simple, all you do is send a request to the extension which will chrome.tabs.create the new page.

contentscript.js

chrome.extension.sendRequest({visit: "http://yahoo.fr"});

background.html

chrome.extension.onRequest.addListener(function(request, sender, sendResponse) {
  if (request.visit) {
    chrome.tabs.create({url: request.visit});
  }
  sendRepsonse({}); // Snub
});

Parent approach

Content Script injects:

<iframe src='iframe.html'></iframe>
<script type="text/javascript">
   function changeURL(url) {
 document.location=url;
   }        
</script>

IFrame contains:

 <a href="javascript:parent.changeURL('http://yahoo.fr');">Change to Yahoo</a>