Browser back button navigation - jsf

Whenever browser back is clicked, it must not navigate to the previous page but to some default page. how is it done using JSF ?

Clicking on browser back button requests the result page from the browser cache.
This is a client side activity. It doesn't send request to your server for fetching some default page(in your case).
Please refer this post for writing a filter indicating the browser not to cache dynamic JSF pages.
And also you can refer this one for more details.
You can try to detect if User has clicked on browser back button by writing client side code.
Refer this post for detecting back button click.
If you are trying to alter the behaviour of browser back button, it indicates some kind of flaw in your application.

Related

Browser back button is not working in Blazor web-server

I want to go previous page when the user clicks on the browser back button. When I navigate another page, I can not go to the last page by using the browser back button. So, can anyone help me find a solution to this problem?
Ensure that every state that you want to show up in next/back is differentiated by a route change navigated to by NavigationManager.
If you make a page /somePage and you let the user step through several choices, and then the user navigates (using the URL bar) then hits the back button on the browser, they will go back to /somePage and not back to the choices they made.
If you make a page /somePage and each time the user makes a choice they are navigated to a new page using NavigationManager, for example /somePage/someSelection, then when they hit back they will go back to /somePage/someSelection. This requires you to load data on subpage choices on init based on optional page route parameters, but the tradeoff is having browser navigations that are part of next/back.

After clicking Browser back button, BeforePageLoad-Code not run

My problem is that after clicking the Browser back button the code in the BeforePagesLoad-Event not triggered. There is a function to get set an object in a manged bean.
I dry to set the cache control to no-store but that don't work. the-order-of-events-in-xpages
Is there a way to trigger a event after clicking the browser back button?
I am no x-pages expert, but it looks to be a server side technology, meaning that a server call must be made in order for the code to run.
The first thread is a solution for forcing a page reload via cookies, while the second involves javascript/jquery. The second also may touch on some cache control of different browsers.
Force a page refresh when page visited from back button
Is there a cross-browser onload event when clicking the back button?

Prevent direct access to some page in JSF

I want to restrict direct access to certain page in my application. Those pages can only be accessible if the user is redirected to those pages by the application.
All the redirections are done via ExternalContext#redirect(url) method.
User can use back and forward button, also can refresh the page by pressing F5 or via browser's refresh button. What I want is user cannot save, or bookmark URLs of some page, also cannot copy those redistricted URL and paste and go via address bar of the browser.
Followings are the cases:
Say, I have Page-A and Page-B.
Redirection is done to Page-B from Page-A.
User can go back to Page-A and can come again to Page-B by using browser's back and forward button.
User can refresh Page-B and he/she will stay in Page-B.
User CANNOT copy the URL of Page-B and access it later time (in new tab or by bookmarking).
Is it feasible? Any pointer would be very helpful to me.
I don't think you can do all that from JSF.
Your obvious alternative is to use Javascript.
I never herd a concept of disabling Bookmark option in Browser using Javascript. However you can always disable the address field if you open the page in new Window.
You can solve it with
JSF Navigation Handler - set a session attribute from some previous page and expire the value after some time with a timer. From the Handler impl check the value of the attribute and restrict access e.g. redirect to some other page in case the value is not present.
You can achieve similar behaviour with web frameworks. Enforcing controlled navigation is a basic feature in most WEB FXs e.g. JBoss Seam conversations or Spring Web Flow controlled navigation implementations.

click of a submit button on any website using Google extension

On the click of a submit button on any website eg. Amazon, I want a .html to be triggered using google extension. please let me know if it is possible.
You can indeed execute scripts on (almost) any page using content scripts that can manipulate the DOM, allowing you to add an onsubmit event listener to a form (more reliable than onclick on a button as it is fired however the form is submitted - e.g. hitting ENTER).
What exactly do you mean you "want a .html to be triggered"? Triggered in what way? If you want to open another tab when this happens, you can do this using message passing to tell your background page to do this for you using the chrome.tab.create API method.

Focus is not going inside EventHandler

I had created a simple web part with one label, and one button. I wnat that when i click the button the label content will change.
But when i debugg i found that the focus is not going inside the Button Click Event function.
When i click the button the debugger will again start with page load.
Is there any Autofocus for Button.
Please help me to resolve my problem.
Thanks :)
I think that you're confused about what happens on the client (within the browser) and what happens on the server (in your ASP.NET code).
Most events on server-side controls, like the ASP.NET button, are handled server-side, through a mechanism called postback. The generated code on the browser causes a form submit to the Web server, where the page and its controls are re-created. The form data is parsed and the button control generates (in your case) a Click event for your server-side code. This code regenerates a new HTML page which will replace the old one.
Fortunately for you in this case, the ASP.NET button has a property "OnClientClick" where you can insert JavaScript code to do whatever you want (like change the label text) directly in the browser.
See MSDN for the docs on the property and an example of using both Click and OnClientClick.
Note that this is not related to SharePoint, this is a pure ASP.NET issue.

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