Develop Reference

JavaScript OAuth Popup window handler code

I'm using oAuth to login or sign up using gmail account and decided to use popup window to do it. I found a snippet here which describes the process. But I can't understand how I'll be able to get the values or code if the user logged in with his email.
I can open the modal by this:
//Authorization popup window code
$.oauthpopup = function(options)
{
options.windowName = options.windowName || 'ConnectWithOAuth'; // should not include space for IE
options.windowOptions = options.windowOptions || 'location=0,status=0,width=800,height=400';
options.callback = options.callback || function(){ window.location.reload(); };
var that = this;
log(options.path);
that._oauthWindow = window.open(options.path, options.windowName, options.windowOptions);
that._oauthInterval = window.setInterval(function(){
if (that._oauthWindow.closed) {
window.clearInterval(that._oauthInterval);
options.callback();
}
}, 1000);
};
And use that as follows:
$.oauthpopup({
path: urltoopen,
callback: function()
{
log('callback');
//do callback stuff
}
});
But now, I'm wondering how to auto close the popup and pass parameters from popup window to the main window.

How to open an app without redirecting the page

I currently have a button. When it's clicked I execute a javascript code.
var openAppBtn = document.getElementById("openAppBtn");
openAppBtn.onclick = function () {
var app = {
launchApp: function () {
window.location.replace("testappscheme://")
}
};
app.launchApp();
};
<a id="openAppBtn" class="btn" href="">Open KWCP App</a>
when I execute this bit of code on iOS, the page does a refresh if the app is not installed. May I ask how do I attempt to open the app without the page redirecting.

You could use an iframe to trigger the app intent. Example code for triggering the intent on the page-load for example. Just put it inside your click function.
<script type="text/javascript" charset="utf-8">
var frame = document.createElement('iframe');
frame.src = 'testappscheme:/' + window.location.pathname + window.location.search;
frame.style.display = 'none';
document.body.appendChild(frame);
// the following is optional, just to avoid an unnecessary iframe on the page
setTimeout(function() { document.body.removeChild(frame); }, 4);
</script>
Simply by clicking the button, add an iframe to your page with the schema-url.

Using JavaScript's history.pushState with Angular's $location.search()

Before I get into the long-winded explanation and the code, let me just say that I understand that my implementation of this system is a bit of a hack-job. The goal was to implement a linking feature on a SPA application without completely overhauling what was already done with Angular and the Bootstrap modals. I'll wager that I probably could have accomplished something better with directives, but my understanding of directives is lacking.
The following is a function that is launched when the system detects a change in the URL. The new URL parameters are passed and are used to query the back-end for content.
function handleUrlParamsModalLaunch(data) {
/*Ensure modal is not displaying any data*/
vm.modalData = {};
vm.selectedTab = null;
/*Show modal loading gif*/
vm.isModalLoading = true;
$("#contentPartModal").modal();
/*Call the content service to return the clicked content article*/
contentpartservice.getContentItem(data.id, data.type).then(function (contentItem) {
if (contentItem) {
vm.isModalLoading = false;
vm.modalData = contentItem;
return;
} else {
closeModal("#contentPartModal").then(function () {
vm.isModalLoading = false;
logger.error('An error occurred while fetching content');
});
return;
}
}, function (error) {
closeModal("#contentPartModal").then(function () {
vm.isModalLoading = false;
logger.error('An error occurred while fetching content');
});
return;
});
}
The following function is run when a link is clicked. It adds the parameters needed to retrieve content from the back-end to the URL.
function setUrl(contentId, contentType) {
var urlParams = $location.search();
if (urlParams.q) {
$location.search({ q: urlParams.q, type: contentType, id: contentId });
} else {
$location.search({ type: contentType, id: contentId });
}
return;
}
The following is where the solution starts to look like a hack job. I need to remove the parameters from the URL when the modal closes, but I couldn't find a way to catch the Bootstrap modal close event from the scope of my Angular controller (where the above functions are being called). Instead, I wrote the following JavaScript code in script tags that does it without Angular's $location dependency.
<script>
/*
* Detect the closing of a modal window and modify the URL to no longer display linking information.
* Not handled in Angular because Angular lacks a suitable way to detect a bootstrap modal close.
*/
$('#contentPartModal').on('hidden.bs.modal', function () {
var pageUrl = $.url();
var pageParams = pageUrl.param();
if (pageParams.q) {
if (history.pushState) {
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?q=' + pageParams.q;
window.history.pushState({ path: newurl }, '', newurl);
}
} else {
if (history.pushState) {
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname;
window.history.pushState({ path: newurl }, '', newurl);
}
}
});
</script>
Here is the resulting bug. The first time you click on a link, all of these functions run fine. The modal is opened with the correct data being displayed. When you close the modal, the URL parameters are removed from view. When you go to click on another link, the setUrl function is called, but the URL doesn't actually change. This results in the modal pop-up not opening. A second click on any link, and everything works as expected. The resulting bug is that each link needs to be clicked twice after the first time the modal has been opened.
Any hints to the cause of this bug would be much appreciated. I'd also accept an idea for a better implementation that would help me circumvent the issue altogether.
Thanks,
Matt

FB.login pop up is blocked when page on load

I'm facing an issue when calling FB.login when page on load, the FB.login pop up is block by the browser. Currently I know I've to call FB.login after a user click event but I've to do it this way due to the business logic from client.
FB.api('/me/permissions', function(response2) {
var permsArray = response2.data[0];
var permsNeeded = ["user_events"];
var permsToPrompt = [];
for (var i in permsNeeded) {
if (permsArray[permsNeeded[i]] == null) {
permsToPrompt.push(permsNeeded[i]);
}
}
if (permsToPrompt.length > 0) {
promptForPerms(permsToPrompt);
}
});
var promptForPerms = function(perms) {
FB.login(function(response) {
}, {scope: perms.join(',')});
};
Is there any solution to call FB.login() without user click event? Or is there any tweak for this? Appreciate for the help.

You're not going to be able to code your way around the popup blocker, unfortunately.
The way to solve this is by redirecting the user to the Facebook permissions dialog when the page loads as described in the docs for manually building a login flow.
You first need to detect if the user is authenticated / connected with your application already and only redirect if they are not connected. This is best done in the window.fbAsyncInit function like this:
window.fbAsyncInit = function() {
var myAppID = 'YOUR APPLICATION ID';
FB.init({ appId: myAppID });
FB.getLoginStatus(function(response) {
if ('connected' != response.status) {
window.location.href = 'https://www.facebook.com/dialog/oauth' +
'?client_id=' + myAppID +
'&scope=user_events' +
'&redirect_uri=' + encodeURIComponent(document.URL);
} else {
alert('welcome to my app');
}
});
};
The other option is to adjust your user journey slightly; perhaps if the user is not connected then you could display an overlay with a message asking them to authenticate and a button which when clicked calls FB.login.

Opening only one instance of url using window.open

I am working on an asp.net web page which has a hyperlink. when ever that hyperlink is clicked, a new browser window is opened using javascript window.open. I want that If user clicks this link multiple times, then only one window is opened and not multiple windows. I just want that window to be highlighted when user clicks that hyperlink multiple times. Do I need to use window.open to detect if the url is opened in any other tab of the browser ? Is there any jQuery plugin built in for this so that I can use it for browser compatibility.
Here is the hyperlink url:
<a onclick="addClick()" href="javascript:void(0)">
New</a>
and here is the code I am using:
function addClick() {
var ID = jQuery("#ID").val();
var PSSWD = jQuery("#PSSWD").val();
var ACCID = jQuery("#ACCID").val();
var PASSWDINT = jQuery("#PASSWDINT").val();
window.open("LoginAPI?ID=" + encodeURIComponent(ID) + "&PSSWD=" + encodeURIComponent(PSSWD) + "&ACCID=" + encodeURIComponent(ACCID) + "&PASSWDINT=" + encodeURIComponent(PASSWDINT) + "", "LoginAPI");
}
Please suggest.

Try
window.open("<url>", "<window name>");
This should always open in the same window. See reference.

HTML:
open window
var wins = {};
function openwindow(){
var url = this.href;
if(typeof wins[url] === 'undefined' || wins[url].closed)
wins[url] = window.open(url);
}

<script>
var windowObjectReference = null; // global variable
function openFFPromotionPopup() {
if(windowObjectReference == null || windowObjectReference.closed)
/* if the pointer to the window object in memory does not exist
or if such pointer exists but the window was closed */
{
windowObjectReference = window.open("http://www.spreadfirefox.com/",
"PromoteFirefoxWindowName", "resizable,scrollbars,status");
/* then create it. The new window will be created and
will be brought on top of any other window. */
}
else
{
windowObjectReference.focus();
/* else the window reference must exist and the window
is not closed; therefore, we can bring it back on top of any other
window with the focus() method. There would be no need to re-create
the window or to reload the referenced resource. */
};
}
</script>
click here
Check the reference https://developer.mozilla.org/en-US/docs/Web/API/window.open

To open only one instance of a popup window in an HTML page, use the windowName parameter of the window.open method.
For example
window.open('http://www.abc.com')
will open a new window each time the user clicks the link containing the window.open code.
In constrast,
window.open('http://www.abc.com','abc')
will open only one instance of the window, no matter how many times users click the link.
you can also use focus function as used below
<script language="javascript" type="text/javascript">
<!--
function popitup(url) {
newwindow=window.open(url,'name','height=200,width=150');
if (window.focus) {newwindow.focus()}
if (!newwindow.closed) {newwindow.focus()}
return false;
}
// -->
</script>
Edit 1
<a onclick="return addClick()" href="javascript:void(0)">New</a>
and here is the code I am using:
function addClick() {
var ID = jQuery("#ID").val();
var PSSWD = jQuery("#PSSWD").val();
var ACCID = jQuery("#ACCID").val();
var PASSWDINT = jQuery("#PASSWDINT").val();
window.open("LoginAPI?ID=" + encodeURIComponent(ID) + "&PSSWD=" + encodeURIComponent(PSSWD) + "&ACCID=" + encodeURIComponent(ACCID) + "&PASSWDINT=" + encodeURIComponent(PASSWDINT) + "", "LoginAPI");
return false;
}