public static Tab CreateNewTab(WebView2Browser parentBrowser, WebView2Environment environment, int id, bool shouldBeActive)
{
Tab tab = new Tab(parentBrowser, environment, id, shouldBeActive);
return(tab);
}
public void HandleTabMessageReceived(int tabId, Tab webview, WebMessageReceivedEventArgs eventArgs)
{
string jsonString = eventArgs.WebMessageAsJson;
JObject jsonObj = JObject.Parse(jsonString);
string uri = webview.Source;
Messages message;
if (!Enum.TryParse <Messages>(jsonObj["message"].Value <string>(), out message))
{
return;
}
JToken args = jsonObj["args"];
switch (message)
{
case Messages.MG_GET_FAVORITES:
case Messages.MG_REMOVE_FAVORITE:
{
string fileURI = GetFilePathAsURI(GetFullPathFor("Content\\content_ui\\favorites.html"));
// Only the favorites UI can request favorites
if (fileURI == uri)
{
args["tabId"] = tabId;
PostJsonToWebView(jsonObj, controlsWebView2);
}
}
break;
case Messages.MG_GET_SETTINGS:
{
string fileURI = GetFilePathAsURI(GetFullPathFor("Content\\content_ui\\settings.html"));
// Only the settings UI can request settings
if (fileURI == uri)
{
args["tabId"] = tabId;
PostJsonToWebView(jsonObj, controlsWebView2);
}
}
break;
case Messages.MG_CLEAR_CACHE:
{
string fileURI = GetFilePathAsURI(GetFullPathFor("Content\\content_ui\\settings.html"));
// Only the settings UI can request cache clearing
if (fileURI == uri)
{
args["content"] = false;
args["controls"] = false;
if (ClearContentCache())
{
args["content"] = true;
}
if (ClearControlsCache())
{
args["controls"] = true;
}
PostJsonToWebView(jsonObj, _tabDictionary[tabId]);
}
}
break;
case Messages.MG_CLEAR_COOKIES:
{
string fileURI = GetFilePathAsURI(GetFullPathFor("Content\\content_ui\\settings.html"));
// Only the settings UI can request cookies clearing
if (fileURI == uri)
{
args["content"] = false;
args["controls"] = false;
if (ClearContentCookies())
{
args["content"] = true;
}
if (ClearControlsCookies())
{
args["controls"] = true;
}
PostJsonToWebView(jsonObj, _tabDictionary[tabId]);
}
}
break;
case Messages.MG_GET_HISTORY:
case Messages.MG_REMOVE_HISTORY_ITEM:
case Messages.MG_CLEAR_HISTORY:
{
string fileURI = GetFilePathAsURI(GetFullPathFor("Content\\content_ui\\history.html"));
// Only the history UI can request history
if (fileURI == uri)
{
args["tabId"] = tabId;
PostJsonToWebView(jsonObj, controlsWebView2);
}
}
break;
default:
{
//OutputDebugString(L"Unexpected message\n");
}
break;
}
}
public void OnWebMessageRecieved(WebMessageReceivedEventArgs args)
{
string source = args.Source;
string json = args.WebMessageAsJson;
string str = args.WebMessageAsString;
JObject jsonObj = JObject.Parse(json);
if (!jsonObj.ContainsKey("message"))
{
return;
}
if (!jsonObj.ContainsKey("args"))
{
return;
}
Messages m;
if (!Enum.TryParse <Messages>(jsonObj["message"].Value <string>(), out m))
{
return;
}
JToken msgArgs = jsonObj["args"];
switch (m)
{
case Messages.MG_CREATE_TAB:
{
int tabId = msgArgs["tabId"].Value <int>();
bool shouldBeActive = msgArgs["active"].Value <bool>();
Tab newTab = Tab.CreateNewTab(this, _contentEnvironment, tabId, shouldBeActive);
if (!_tabDictionary.ContainsKey(tabId))
{
newTab.Dock = DockStyle.Fill;
tableLayoutPanel1.Controls.Add(newTab, 0, 1);
_tabDictionary.Add(tabId, newTab);
}
}
break;
case Messages.MG_NAVIGATE:
{
string uri = msgArgs["uri"].Value <string>();
string browserScheme = "browser://";
if (uri.Contains(browserScheme))
{
string path = uri.Substring(browserScheme.Length);
if (path == "favorites" ||
path == "settings" ||
path == "history")
{
string filePath = "Content\\content_ui\\";
filePath = Path.Combine(filePath, path);
filePath += ".html";
string fullPath = GetFullPathFor(filePath);
_tabDictionary[_activeTabId].Navigate(fullPath);
}
else
{
System.Diagnostics.Debug.WriteLine("Requested unknown browser page");
}
}
else
{
_tabDictionary[_activeTabId].Navigate(uri);
}
}
break;
case Messages.MG_GO_FORWARD:
{
_tabDictionary[_activeTabId].GoForward();
}
break;
case Messages.MG_GO_BACK:
{
_tabDictionary[_activeTabId].GoBack();
}
break;
case Messages.MG_RELOAD:
{
_tabDictionary[_activeTabId].Reload();
}
break;
case Messages.MG_CANCEL:
{
_tabDictionary[_activeTabId].CallDevToolsProtocolMethod("Page.stopLoading", "{}", null);
}
break;
case Messages.MG_SWITCH_TAB:
{
int tabId = msgArgs["tabId"].Value <int>();
SwitchToTab(tabId);
}
break;
case Messages.MG_CLOSE_TAB:
{
int tabId = msgArgs["tabId"].Value <int>();
tableLayoutPanel1.Controls.Remove(_tabDictionary[tabId]);
_tabDictionary.Remove(tabId);
}
break;
case Messages.MG_CLOSE_WINDOW:
{
Close();
}
break;
case Messages.MG_SHOW_OPTIONS:
{
_optionsWebView.Visible = true;
ResizeUIWebViews();
_optionsWebView.BringToFront();
_optionsWebView.Focus();
}
break;
case Messages.MG_HIDE_OPTIONS:
{
_optionsWebView.Visible = false;
}
break;
case Messages.MG_OPTION_SELECTED:
{
_tabDictionary[_activeTabId].Focus();
}
break;
case Messages.MG_GET_FAVORITES:
case Messages.MG_GET_SETTINGS:
case Messages.MG_GET_HISTORY:
{
// Forward back to requesting tab
JToken tabIdToken = msgArgs["tabId"];
int tabId = tabIdToken.Value <int>();
RemoveFields(msgArgs, new string[] { "tabId" });
PostJsonToWebView(jsonObj, _tabDictionary[tabId]);
}
break;
}
}
public void HandleTabNavCompleted(int tabId, Tab webview, bool isSuccess)
{
string getTitleScript =
// Look for a title tag
"(() => {" +
" const titleTag = document.getElementsByTagName('title')[0];" +
" if (titleTag) {" +
" return titleTag.innerHTML;" +
" }" +
// No title tag, look for the file name
" pathname = window.location.pathname;" +
" var filename = pathname.split('/').pop();" +
" if (filename) {" +
" return filename;" +
" }" +
// No file name, look for the hostname
" const hostname = window.location.hostname;" +
" if (hostname) {" +
" return hostname;" +
" }" +
// Fallback: let the UI use a generic title
" return '';" +
"})();";
string getFaviconURI =
"(() => {" +
// Let the UI use a fallback favicon
" let faviconURI = '';" +
" let links = document.getElementsByTagName('link');" +
// Test each link for a favicon
" Array.from(links).map(element => {" +
" let rel = element.rel;" +
// Favicon is declared, try to get the href
" if (rel && (rel == 'shortcut icon' || rel == 'icon')) {" +
" if (!element.href) {" +
" return;" +
" }" +
// href to icon found, check it's full URI
" try {" +
" let urlParser = new URL(element.href);" +
" faviconURI = urlParser.href;" +
" } catch(e) {" +
// Try prepending origin
" let origin = window.location.origin;" +
" let faviconLocation = `${origin}/${element.href}`;" +
" try {" +
" urlParser = new URL(faviconLocation);" +
" faviconURI = urlParser.href;" +
" } catch (e2) {" +
" return;" +
" }" +
" }" +
" }" +
" });" +
" return faviconURI;" +
"})();";
webview.ExecuteScript(getTitleScript, (ExecuteScriptCompletedEventArgs args) =>
{
if (args.ErrorCode != 0)
{
return;
}
StringBuilder titleSb = new StringBuilder();
StringWriter titleSw = new StringWriter(titleSb);
using (JsonWriter writer = new JsonTextWriter(titleSw))
{
writer.Formatting = Formatting.Indented;
writer.WriteStartObject();
writer.WritePropertyName("message");
writer.WriteValue(Messages.MG_UPDATE_TAB);
writer.WritePropertyName("args");
writer.WriteStartObject();
writer.WritePropertyName("title");
writer.WriteValue(args.ResultAsJson.Trim('"'));
writer.WritePropertyName("tabId");
writer.WriteValue(tabId);
}
string titleJson = titleSb.ToString();
PostJsonToWebView(titleJson, controlsWebView2);
});
webview.ExecuteScript(getFaviconURI, (ExecuteScriptCompletedEventArgs args) =>
{
if (args.ErrorCode != 0)
{
return;
}
StringBuilder iconSb = new StringBuilder();
StringWriter iconSw = new StringWriter(iconSb);
using (JsonWriter writer = new JsonTextWriter(iconSw))
{
writer.Formatting = Formatting.Indented;
writer.WriteStartObject();
writer.WritePropertyName("message");
writer.WriteValue(Messages.MG_UPDATE_FAVICON);
writer.WritePropertyName("args");
writer.WriteStartObject();
writer.WritePropertyName("uri");
writer.WriteValue(args.ResultAsJson);
writer.WritePropertyName("tabId");
writer.WriteValue(tabId);
}
string iconJson = iconSw.ToString();
PostJsonToWebView(iconJson, controlsWebView2);
});
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
using (JsonWriter writer = new JsonTextWriter(sw))
{
writer.Formatting = Formatting.Indented;
writer.WriteStartObject();
writer.WritePropertyName("message");
writer.WriteValue(Messages.MG_NAV_COMPLETED);
writer.WritePropertyName("args");
writer.WriteStartObject();
writer.WritePropertyName("tabId");
writer.WriteValue(tabId);
writer.WritePropertyName("isError");
writer.WriteValue(!isSuccess);
}
string json = sw.ToString();
PostJsonToWebView(json, controlsWebView2);
}
