I have read in requirements that when user presses the back button, application must exit.
(5.4.2): "Pressing the Back button from the first screen of an application must exit the application".
So, i have read in many sites that exitting in silverlight is not available, but i think that they mean, that application should only deactivate (for example, it is deactivated when we press button with "windows flag").
I have a main menu in my application. If i navigate on another pages and return to main menu, pressing "back button" doesn't deactivate application because previous pages are another pages in application. So, maybe I need to clean "navigation history" ? But it is not possible, i have readed it somewhere...
so, what to do in this case?
The back button must exit the application from the first screen in your application. Your application is supposed to navigate backwards through your page stack if the user has navigated forwards through your pages.
This requirement simply means that you application must not prevent the user from exiting the application when the press the back button and have reached the first page.
First off, there is no explicite exiting in Silverlight. There is no Exit() method.
Think of your app as a webapp and whole navigation system is like a simple browser with back, home and search button.
Can you close stackoverflow.com ? you can back to another site (if any) or press start/home button to leave stackoverflow (if it's not your home page :) )
In Windows Phone 7 the behaviour you describe as "deactivate" is called Tombstoning.
You can use Non-linear Navigation Service to solve your problem with navigation.
Related
I want to pop a modal with "Cancel" and "Yes" buttons when a user attempts to leave the single-page app.
To provide some context, I am working on a single page app that appears on a larger site that is not part of the single page app (so, the header and footer is part of the larger site, and single-page-app is the content). When a user attempts to leave to another part of the site (by clicking somewhere in the nav for instance) that is not part of the single page app, I want a warning modal to display with a warning. A user can close or refresh the page as much as they want, and it shouldn't pop a modal. Same thing if a user hard-codes a url (say, google.com in the browser), the modal should not pop.
So far the other similar threads I found on stackoverflow either uses Prompt component, or window.onbeforeunload. Both of these have the issue of them popping a default text box with a warning, and not a custom modal, which is an important problem, but that isn't all of the issue.
Prompt, to my understanding triggers whenever a user redirects within the single page app, which is not the behavior that I want.
window.onbeforeunload, to my undertstanding triggers even when refresh or close, which is not the behavior I want.
Maybe this isn't such a common problem, since I can't seem to find an easy solution for this, but any and all ideas are greatly appreciated.
I have a WPF application that hosts a CEF browser using CEFSharp. I've found that if I navigate my application's controls using keyboard tabbing, I can cycle through my controls without problem. Once focus makes it to the ChromiumWebBrowser control, focus shifts to within the current web page, as expected. However, once focus makes it within the web page, I can never get focus back out to my application. Hitting tab at the end of the html document just moves focus back to the top of the page, rather than pushing focus back to my application.
I have tried implementing IFocusHandler, but IFocusHandler.OnSetFocus() gets called right when the application is launched and none of the handler methods ever get called again.
How can I move focus back to the host application when tabbing reaches the end of a document in CEFSharp?
UPDATE:
Since this is a bug in CEF that has yet to be fixed, here are a couple relevant links to check on later to see if any progress has been made.
CEFSharp issue: https://github.com/cefsharp/CefSharp/issues/721
CEF issue: https://bitbucket.org/chromiumembedded/cef/issues/1826/focus-handler-not-called-for-offscreen
Is there a way to override the behavior of the back button in the browser when using a Silverlight app?
Essentially what I want to do is use the browser's back button to close dialogs in my application. The dialog covers the whole screen and the user would be inclined to think they are on a separate web page.
Look to the following links:
Prevent Browser Back Button for Silverlight with Confirm Dialog.
Silverlight - Prevent users from losing changes by using the browser back button
Managing Silverlight 3 navigation
behavior
I'm using the Navigational Framework in Silverlight 4. I'm starting to believe that this was a mistake as the browser buttons are really screwing things up for users. For instance, when a child window is opened the user believes they can close the window by pressing the back button. It doesn't close the window obviously, it just navigates the parent page back a step. The end result is a messed up data set. I'm fed up with the little control I have over the navigation of my application; forward and back buttons are anachronistic. Web applications don't work that way anymore. Please someone tell me how I can disable their functionality; that is, cancel navigation when it is started from one of these buttons.
Remove this code from your html page which holds your silverlight XAP:
<iframe id="_sl_historyFrame" style="visibility:hidden;height:0px;width:0px;border:0px"></iframe>
This is the history frame.
You will likely have to do this in the actual web/asp.net page, as Silverlight has no real control over the browser.
Some workarounds in this article:
http://lennilobel.wordpress.com/2009/07/26/defeat-the-evil-back-button-in-your-asp-net-applications/
Is there any way to load my silverlight app in F11 mode directly?
I have used
window.open(url, '_self',
'toolbar=no,status=no,location=no,menubar=no,resizable=yes,scrollbars=no,fullscreen=yes',
'true');
HtmlPage.window.invoke("launchPage",url);
But the problem is that two instances of my app are opened. One in normal screen and the other in fullscreen.
I have tried
App.Current.Host.Content.IsFullScreen = true;
in the constructor of the App.xaml
Still its not working. :(
Where am I going wrong??
running a Silverlight application automatically in full-screen is not possible because of security restriction. It is like the following...
You have opened your banks login page in a Firefox tab. This is your current tab.
You are opening a malicious silverlight application on another tab.
The malicious silverlight application loads and creates a full-screen that exactly matches your bank's login page.
You are talking to someone while the silverlight application loads. (Your eye is not on screen) So you missed the fullscreen message that pops up.
Now when you look at the computer screen you see your bank login page that is actually a fullscreen page of the silverlight application that matches your bank's login page.
You enter your user name and password...and
When you click login the malicious application has got everything it wanted.
This is not only for Silverlight. It is a restriction that SHOULD BE THERE WITH EVERY ACTIVEX CONTROL UNTIL THIS PROBLEM IS SOLVED.
What you are doing with javascript is you are opening a new pop up window without menubar, addressbar etc. It is not a replacement of F11. And to my experience most of the users hate automatic poping up. And most modern browsers will block them anyway.
The best way is to tell the user she needs to view your application on fullscreen and LET HER DECIDE INSTEAD OF FORCING IT.