private void MainWeb_KeyDown(object sender, KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.F5)
{
MainWeb.Refresh();
}
}
private void MainPage_BackRequested(object sender, BackRequestedEventArgs e)
{
if (MainWeb.CanGoBack)
{
MainWeb.GoBack();
e.Handled = true;
}
else
{
}
}
//mehtod is called when forward button is pressed
private void Forwrdbtn_Click(object sender, RoutedEventArgs e)
{
try
{
MainWeb.GoForward();
}
catch (Exception)
{
Forwardbtn.IsEnabled = false;
}
}
//method is called when back button is pressed
private void Backbtn_Click(object sender, RoutedEventArgs e)
{
try
{
MainWeb.GoBack();
}
catch (Exception)
{
Backbtn.IsEnabled = false;
}
}
//handles stop-refresh button clicks
private void Stop_Refreshbtn_Click(object sender, RoutedEventArgs e)
{
//if webpage is navigating then stop it
if (navigating == true)
{
MainWeb.Stop();
}
else //otherwise refresh it
{
MainWeb.Refresh();
}
}
//method is called if webpage couldn't be loaded
private async void MainWeb_NavigationFailed(object sender, WebViewNavigationFailedEventArgs e)
{
//we want to display the error page that is saved in app installation directory
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Cannot_Load_Error.html"));
StorageFolder folder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("Folder", CreationCollisionOption.OpenIfExists);
//we cannot display the original error page, hence copy it to another location
await file.CopyAsync(folder, "Cannot_Load_Error.html", NameCollisionOption.ReplaceExisting);
//show the error page
MainWeb.Navigate(new Uri("ms-appdata:///local/Folder/Cannot_Load_Error.html"));
}
//first method to be called upon starting the app
private async void Page_Loaded(object sender, RoutedEventArgs e)
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
SystemNavigationManager.GetForCurrentView().BackRequested += MainPage_BackRequested;
//check to see if app is loaded just now
if (App.started == true)
{
try
{ //if app is loaded just now then try to navigate to homepage
MainWeb.Navigate(new Uri((string)AllSettings.Values["HomePage"]));
AllSettings.Values["Incognito"] = "Off";
}
catch (Exception)
{
//if try fails, probably this is the first time app is launched and hence we need to set up envionment
AllSettings.Values["HomePage"] = " ";
AllSettings.Values["Incognito"] = "Off";
}
try
{
var downloads = await BackgroundDownloader.GetCurrentDownloadsAsync();
foreach (var download in downloads)
{
CancellationTokenSource cts = new CancellationTokenSource();
await download.AttachAsync().AsTask(cts.Token);
cts.Cancel();
}
}
catch (Exception)
{
}
//app is launched just now hence no history or future or present, so disable all buttons
Backbtn.IsEnabled = false;
Forwardbtn.IsEnabled = false;
Stop_Refreshbtn.IsEnabled = false;
App.started = false;//give sign that app is now running so that next time, we won't fall here
}
//if we've got a url from history that needs to launched then check its existence
else if (!string.IsNullOrEmpty(App.urlFromOtherWindows))
{
MainWeb.Navigate(new Uri(App.urlFromOtherWindows));//and navigate to it
App.urlFromOtherWindows = null;
}
}
//handles home button clicks
private void Homebtn_Click(object sender, RoutedEventArgs e)
{
try//try to navigate to home address
{
//gets the homepage address from 'HomePage' Settings
string HomeURLstring = ((string)AllSettings.Values["HomePage"]);
if (HomeURLstring != " ")//check if it is null
{
Uri HomeURL = new Uri(HomeURLstring);
MainWeb.Navigate(HomeURL);
}
}
catch (Exception)
{
//if try fails, probably this is the first time app is launched and hence we need to set up envionment
AllSettings.Values["HomePage"] = " ";
}
}
private async void Tabsbtn_Click(object sender, RoutedEventArgs e)
{
await MainWeb.CapturePreviewToStreamAsync(App.streamsource);
this.Frame.Navigate(typeof(AllTabsTab));
}
//method is called when enter is pressed after typing url
private async void URLtb_KeyDown(object sender, KeyRoutedEventArgs e)
{
//try to resolve the url
try
{
int searchIndex = (int)AllSettings.Values["SearchEngine"];
//accept the final url only if 'enter' key is pressed
if (e.Key == Windows.System.VirtualKey.Enter)
{
string bURL = URLtb.Text.ToString();
string fURL;
if (bURL.Contains(".com") == true || bURL.Contains(".") == true)
{
string extra = "http://";
//if url is already resolved then don't do anything
if (bURL.StartsWith("http://") == true || bURL.StartsWith("https://") == true || bURL.Contains("://") == true)
{
fURL = bURL;
}
//if url doesn't contain 'www' but ends with '.com' then add 'www.'
else if (bURL.StartsWith("www.") == false && bURL.EndsWith(".com") == true)
{
fURL = extra + "www." + bURL;
}
//if url is of different type other than containing '.com'
else if (bURL.Contains(".") == true)
{
fURL = extra + bURL;
}
//if url doesn't contain 'www' and 'com' as well then add both
else if (bURL.EndsWith(".com") == false)
{
fURL = extra + "www." + bURL + ".com";
}
//if url contains both then add only 'http://' prefix
else
{
fURL = extra + bURL;
}
}
else if (searchIndex == 0)
{
fURL = "https://www.google.co.in/?gfe_rd=cr&ei=DXE1WaOLH9eB1ATb3ZXwDQ#q=" + bURL;
}
else if (searchIndex == 1)
{
fURL = "https://www.bing.com/search?q=" + bURL;
}
else if (searchIndex == 2)
{
fURL = "https://in.search.yahoo.com/search;_ylc=X3oDMTFiaHBhMnJmBF9TAzIwMjM1MzgwNzUEaXRjAzEEc2VjA3NyY2hfcWEEc2xrA3NyY2hhc3Q-?p=" + bURL;
}
else if (searchIndex == 3)
{
fURL = "https://duckduckgo.com/?q=" + bURL;
}
else
{
string extra = "http://";
//if url is already resolved then don't do anything
if (bURL.StartsWith("http://") == true || bURL.StartsWith("https://") == true)
{
fURL = bURL;
}
//if url doesn't contain 'www' but ends with '.com' then add 'www.'
else if (bURL.StartsWith("www.") == false && bURL.EndsWith(".com") == true)
{
fURL = extra + "www." + bURL;
}
//if url is of different type other than containing '.com'
else if (bURL.Contains(".") == true)
{
fURL = extra + bURL;
}
//if url doesn't contain 'www' and 'com' as well then add both
else if (bURL.EndsWith(".com") == false)
{
fURL = extra + "www." + bURL + ".com";
}
//if url contains both then add only 'http://' prefix
else
{
fURL = extra + bURL;
}
}
//finally navigate to url
MainWeb.Navigate(new Uri(fURL));
//url textbox shouldn't contain blinking line
LoseFocus(sender);
}
}
catch (Exception)
{
//if url cannot be resolved then dignosis
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Cannot_Load_Error.html"));
StorageFolder folder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("Folder", CreationCollisionOption.OpenIfExists);
//we cannot display the original error page, hence copy it to another location
await file.CopyAsync(folder, "Cannot_Load_Error.html", NameCollisionOption.ReplaceExisting);
//show the error page
MainWeb.Navigate(new Uri("ms-appdata:///local/Folder/Cannot_Load_Error.html"));
}
}
