public void Navigate(string uriString)
{
_isNavigating = true;
bool cancelled = false;
var uri = new Uri(uriString);
var normalisedUri = UriTester.NormaliseUri(uri);
var siteIdentity = new SiteIdentity(normalisedUri, Session.Instance);
var fullQuery = normalisedUri.OriginalString;
//sanity check we have a valid URL syntax at least
if (normalisedUri.Scheme == null)
{
ToastNotify("Invalid URL: " + normalisedUri.OriginalString, ToastMessageStyles.Error);
cancelled = true;
}
ToggleContainerControlsForBrowser(false);
//these are the only ones we "navigate" to. We do this by downloading the GMI content
//converting to HTML and then actually navigating to that.
if (normalisedUri.Scheme == "gemini")
{
var geminiNavigator = new GeminiNavigator(this);
cancelled = geminiNavigator.NavigateGeminiScheme(fullQuery, uri, siteIdentity);
}
else if (normalisedUri.Scheme == "gopher")
{
var gopherNavigator = new GopherNavigator(this);
cancelled = gopherNavigator.NavigateGopherScheme(fullQuery, uri, siteIdentity);
}
else if (normalisedUri.Scheme == "about")
{
var aboutNavigator = new AboutNavigator(this);
cancelled = aboutNavigator.NavigateAboutScheme(uri, siteIdentity);
}
else if (normalisedUri.Scheme.StartsWith("http")) //both http and https
{
//detect ctrl click
if (_settings.HandleWebLinks == "System web browser")
{
//open in system web browser
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(uri.ToString());
ToggleContainerControlsForBrowser(true);
cancelled = true;
}
else if (_settings.HandleWebLinks == "Gemini HTTP proxy")
{
// use a gemini proxy for http links
var geminiNavigator = new GeminiNavigator(this);
cancelled = geminiNavigator.NavigateGeminiScheme(fullQuery, uri, siteIdentity);
}
else
{
//use internal navigator
var httpNavigator = new HttpNavigator(this);
cancelled = httpNavigator.NavigateHttpScheme(fullQuery, uri, siteIdentity, "web-launch-external");
}
}
else if (normalisedUri.Scheme == "file")
{
//just load the converted html file
//no further action.
BrowserControl.Text = File.ReadAllText(normalisedUri.LocalPath);
}
else
{
//we don't care about any other protocols
//so we open those in system web browser to deal with
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(uri.ToString());
ToggleContainerControlsForBrowser(true);
cancelled = true;
}
if (!cancelled)
{
uriString = uri.ToString();
//look up the URL that this HTML page shows
var regex = new Regex(@".*/([a-f0-9]+)\.(.*)");
if (regex.IsMatch(uriString))
{
var match = regex.Match(uriString);
var hash = match.Groups[1].ToString();
string geminiUrl = _urlsByHash[hash];
if (geminiUrl != null)
{
//now show the actual gemini URL in the address bar
txtUrl.Text = geminiUrl;
ShowTitle(BrowserControl);
var originalUri = new UriBuilder(geminiUrl);
if (originalUri.Scheme == "http" || originalUri.Scheme == "https")
{
ShowLinkRenderMode(BrowserControl.Text);
}
}
//if a text file (i.e. view->source), explicitly set the charset
//to UTF-8 so ascii art looks correct etc.
if ("txt" == match.Groups[2].ToString().ToLower())
{
//set text files (GMI source) to be UTF-8 for now
HtmlPanelExtensions.SetCharsetUtf8(BrowserControl.Text);
}
}
BrowserControl.Focus();
ShowTitle(BrowserControl);
//we need to turn on/off other elements so focus doesnt move elsewhere
//in that case the keyboard events go elsewhere and you have to click
//into the browser to get it to work again
//see https://stackoverflow.com/questions/8495857/webbrowser-steals-focus
ToggleContainerControlsForBrowser(true);
}
_isNavigating = false;
}
private void BrowserControl_Navigating(object sender, NavigatingCancelEventArgs e)
{
_isNavigating = true;
var normalisedUri = UriTester.NormaliseUri(e.Uri);
var siteIdentity = new SiteIdentity(normalisedUri, Session.Instance);
var fullQuery = normalisedUri.OriginalString;
//sanity check we have a valid URL syntax at least
if (e.Uri.Scheme == null)
{
ToastNotify("Invalid URL: " + normalisedUri.OriginalString, ToastMessageStyles.Error);
e.Cancel = true;
}
var settings = new UserSettings();
ToggleContainerControlsForBrowser(false);
//these are the only ones we "navigate" to. We do this by downloading the GMI content
//converting to HTML and then actually navigating to that.
if (normalisedUri.Scheme == "gemini")
{
var geminiNavigator = new GeminiNavigator(this, this.BrowserControl);
geminiNavigator.NavigateGeminiScheme(fullQuery, e, siteIdentity);
}
else if (normalisedUri.Scheme == "nimigem")
{
var nimigemNavigator = new NimigemNavigator(this, this.BrowserControl);
var document = (HTMLDocument)BrowserControl.Document;
var firstTextarea = (IHTMLTextAreaElement)document.getElementsByTagName("textarea").item(0);
string payload;
if (firstTextarea != null)
{
payload = firstTextarea.value;
}
else
{
payload = "";
}
nimigemNavigator.NavigateNimigemScheme(fullQuery, e, payload);
}
else if (normalisedUri.Scheme == "gopher")
{
var gopherNavigator = new GopherNavigator(this, this.BrowserControl);
gopherNavigator.NavigateGopherScheme(fullQuery, e, siteIdentity);
}
else if (normalisedUri.Scheme == "about")
{
var aboutNavigator = new AboutNavigator(this, this.BrowserControl);
aboutNavigator.NavigateAboutScheme(e, siteIdentity);
}
else if (normalisedUri.Scheme.StartsWith("http")) //both http and https
{
var linkId = "";
////doc might be null - you need to check when using!
var doc = (HTMLDocument)BrowserControl.Document;
////this is how we could detect a click on a link to an image...
if (doc?.activeElement != null)
{
linkId = doc.activeElement.id;
}
//detect ctrl click
if (
Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightCtrl) ||
settings.HandleWebLinks == "System web browser" ||
linkId == "web-launch-external"
)
{
//open in system web browser
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(e.Uri.ToString());
ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
else if (settings.HandleWebLinks == "Gemini HTTP proxy")
{
// use a gemini proxy for http links
var geminiNavigator = new GeminiNavigator(this, this.BrowserControl);
geminiNavigator.NavigateGeminiScheme(fullQuery, e, siteIdentity);
}
else
{
//use internal navigator
var httpNavigator = new HttpNavigator(this, this.BrowserControl);
httpNavigator.NavigateHttpScheme(fullQuery, e, siteIdentity, linkId);
}
}
else if (normalisedUri.Scheme == "file")
{
//just load the converted html file
//no further action.
}
else
{
//we don't care about any other protocols
//so we open those in system web browser to deal with
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(e.Uri.ToString());
ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
if (e.Cancel)
{
_isNavigating = false;
}
}